Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a shell, an indoor air outlet, an indoor return air inlet, an outdoor air outlet and an outdoor air inlet are formed in the shell, a fresh air channel is formed between the indoor air outlet and the outdoor air inlet, and an exhaust channel is formed between the indoor return air inlet and the outdoor air outlet; the total heat exchange core body is arranged in the shell; one fan assembly is arranged in the fresh air channel, and the other fan assembly is arranged in the exhaust channel; the first filter screen is arranged in the shell, and the first filter screen is located between the total heat exchange core body and the indoor air return opening; the shell is further provided with a maintenance opening, the maintenance opening is provided with an access door capable of being opened and closed, and the total heat exchange core body and the first filter screen are arranged at the maintenance opening. In addition, the length of the first filter screen is larger than the opening size of the maintenance opening, and the first filter screen is configured to be capable of being bent and deformed in the length direction after being stressed. The filtering coverage range of the air conditioner indoor unit is widened, and the requirement for convenient disassembly and assembly is met.

Description

Technical Field

[0001] This utility model relates to the technical field of air handling equipment, and more particularly to an indoor air conditioning unit. Background Technology

[0002] Air conditioners are common household appliances, and as users' demands for air quality increase, air conditioners equipped with fresh air functions are gradually becoming more widely used. Air conditioners with fresh air functions typically have an additional heat exchange core to meet the air quality requirements between indoors and outdoors.

[0003] Chinese Patent Publication No. CN 220582674U discloses a total heat exchanger. The housing contains a fan and a heat exchange core. To filter the air entering the heat exchange core, a filter is also installed inside the housing. For easy filter replacement, a hinged access cover is typically provided on the housing. Opening the cover exposes the maintenance port, allowing the heat exchange core to be exposed and the filter to be installed or removed by the operator. In practical use, the filters on the heat exchange core vary depending on the incoming air source. Specifically, a coarse filter is generally used for indoor return air entering the heat exchange core, while a combination of a coarse filter and a high-efficiency filter is used for outdoor fresh air entering the heat exchange core. However, due to the size of the maintenance port, the filters in the prior art are relatively small to allow for easy removal from the port. Especially for filters designed to filter indoor return air, their overall length is relatively short, resulting in a smaller coverage area.

[0004] Therefore, how to design a technology that improves the coverage of the filter and meets the requirements of easy disassembly and assembly is the technical problem to be solved by this utility model.

[0005] 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. Utility Model Content

[0006] In view of the problems pointed out in the background art, the present invention provides an air conditioner indoor unit that improves the filtration coverage of the air conditioner indoor unit and meets the requirements of convenient disassembly and assembly.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0008] In some embodiments of this application, an indoor air conditioning unit is provided, comprising:

[0009] The outer casing is provided with an indoor air outlet, an indoor return air outlet, an outdoor air outlet, and an outdoor air inlet. A fresh air channel is formed between the indoor air outlet and the outdoor air inlet, and an exhaust air channel is formed between the indoor return air outlet and the outdoor air outlet.

[0010] A total heat exchange core is disposed in the outer casing and is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust duct.

[0011] Two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct;

[0012] A first filter screen is disposed in the outer casing and is located between the total heat exchange core and the indoor return air vent.

[0013] The outer casing is also provided with a maintenance port, which is equipped with an openable inspection door. The total heat exchange core and the first filter screen are arranged at the maintenance port.

[0014] In addition, the length of the first filter screen is greater than the opening size of the maintenance port, and the first filter screen is configured to be flexible and deformable in the length direction when subjected to force.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows: by extending the first filter screen, the filtration area of ​​the first filter screen can be effectively increased, and the filtration coverage range can be improved. In addition, since the filtration area of ​​the first filter screen is increased, the length of the first filter screen will be greater than the opening size of the maintenance port. In order to facilitate the disassembly and replacement of the first filter screen, the first filter screen can be bent and deformed along its length. In this way, when disassembling and replacing the first filter screen, the first filter screen can be bent to facilitate the disassembly and replacement operation through the maintenance port, thus meeting the requirements of convenient disassembly and replacement.

[0016] Another embodiment of this application also provides an air conditioner indoor unit, including:

[0017] The outer casing is provided with an indoor air outlet, an indoor return air outlet, an outdoor air outlet, and an outdoor air inlet. A fresh air channel is formed between the indoor air outlet and the outdoor air inlet, and an exhaust air channel is formed between the indoor return air outlet and the outdoor air outlet.

[0018] A total heat exchange core is disposed in the outer casing and is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust duct.

[0019] Two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct;

[0020] A first filter screen is disposed in the outer casing and is located between the total heat exchange core and the indoor return air vent.

[0021] The outer casing is also provided with a maintenance port, which is equipped with an openable inspection door. The total heat exchange core and the first filter screen are arranged at the maintenance port.

[0022] In addition, the length of the first filter screen is greater than the opening size of the maintenance port, and the first filter screen is provided with at least one deformable part along its length direction. The deformable part is configured to be able to bend and elastically deform after the first filter screen is subjected to force.

[0023] Compared with the prior art, the advantages and positive effects of this utility model are as follows: by extending the first filter screen, the filtration area of ​​the first filter screen can be effectively increased, and the filtration coverage range can be improved. In addition, since the filtration area of ​​the first filter screen is increased, the length of the first filter screen will be greater than the opening size of the maintenance port. In order to facilitate the disassembly and replacement of the first filter screen, the first filter screen can be bent and deformed at the deformation part after being subjected to force. In this way, when disassembling and replacing the first filter screen, the first filter screen can be bent to facilitate the disassembly and replacement operation through the maintenance port, thus meeting the requirements of convenient disassembly and replacement.

[0024] In one embodiment of this application, the first filter screen includes a first frame and a first filter screen, wherein the first filter screen is disposed on the first frame;

[0025] The first frame has at least one notch structure on its border along its length; the notch structure is configured such that when the first frame is subjected to force, the first frame bends at the notch structure.

[0026] The above technical solution has the following advantages or beneficial effects: by setting a notch structure on the frame of the first frame, during the process of disassembling and assembling the first filter screen, the operator applies external force to the first frame to bend the first filter screen. The bending of the first filter screen can be achieved at the notch structure, which is more conducive to the first filter screen being subjected to force and producing bending deformation, so as to meet the requirements of disassembly and assembly.

[0027] In one embodiment of this application, a structural reinforcement is further provided between the two sidewalls of the first frame along the length direction;

[0028] The notch structure also extends along the width direction of the first frame and is distributed on the structural reinforcement.

[0029] The above technical solution has the following advantages or beneficial effects: by setting structural reinforcement members along the width direction on the first frame, the structural reinforcement members can effectively improve the structural strength of the first frame. At the same time, the notch structure extends further on the structural reinforcement members. During the bending process of the first filter screen, the first filter screen can be further bent along the notch structure on the structural reinforcement members to increase the bending angle of the first filter screen and thus improve the convenience of disassembly and assembly.

[0030] In one embodiment of this application, the first filter screen includes a plurality of first frames, and each first frame is provided with a first filter screen;

[0031] Two adjacent first frames are connected together, and the connection portion of the two adjacent first frames forms a deformable part.

[0032] The above technical solution has the following advantages or beneficial effects: multiple first frames are used to install the first filter screen. After adjacent first frames are connected together, when the first filter screen is bent, the first filter screen can deform at the deformation part formed at the connection between the two first frames to meet the requirements of bending deformation for disassembly and assembly.

[0033] In one embodiment of this application, the plurality of the first frames are an integral structure.

[0034] The above technical solution has the following advantages or beneficial effects: multiple first frames are integrally injection molded to improve the overall structural strength of the first filter screen.

[0035] In one embodiment of this application, the plurality of first frames are split structures, and the first filter screen further includes a flexible connector. Two adjacent first frames are connected together by the flexible connector, and the flexible connector forms the deformable part.

[0036] The above technical solution has the following advantages or beneficial effects: the first filter screen adopts a split first frame, and the adjacent first frames are assembled together by flexible connectors. In this way, when the first filter screen is bent, elastic deformation can be generated by the flexible connectors to meet the requirements of bending deformation of the first filter screen for disassembly and assembly.

[0037] In one embodiment of this application, a damper is further provided between the total heat exchange core and the outer shell. The damper is arranged between the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel. The damper is configured to selectively connect the indoor air outlet and the indoor return air outlet.

[0038] The damper and the total heat exchange core are arranged on the same side of the first filter screen.

[0039] The above technical solution has the following advantages or beneficial effects: By installing a damper between the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel in the total heat exchange core, the damper controls the connection between the indoor return air vent and the indoor air outlet. This allows for rapid temperature adjustment when the indoor temperature has not reached the set value, by opening the damper to connect the indoor return air vent and the indoor air outlet, thereby improving the user experience. Furthermore, the first filter can also simultaneously filter the air flowing towards the damper, meeting the filtration requirements during indoor air circulation.

[0040] In one embodiment of this application, a first partition plate is further provided in the housing, one end of the first partition plate is connected to the total heat exchange core, and the first partition plate separates the two fan assemblies;

[0041] The outer casing is also provided with a second partition plate, one end of which is connected to the total heat exchange core, and the second partition plate separates the indoor air outlet and the indoor air return outlet.

[0042] The total heat exchange core separates the outdoor air outlet and the outdoor air inlet;

[0043] The second partition plate is provided with a connecting port, and the connecting port is provided with the damper. The connecting port is configured to connect the indoor air outlet and the indoor air return outlet. The damper is also configured to open and close the connecting port.

[0044] The first filter screen is also located between the connecting port and the indoor return air vent, and the connecting port and the total heat exchange core are arranged on the same side of the first filter screen.

[0045] The above technical solution has the following advantages or beneficial effects: by setting a first partition plate and a second partition plate, the exhaust air channel and the fresh air channel are separated at the outlet of the fresh air heat exchange channel by the total heat exchange core. At the same time, the connecting port set on the second partition plate can meet the mutual connection between the exhaust air channel and the fresh air channel so that the indoor return air outlet and the indoor air outlet can be connected to realize internal circulation. The damper is installed at the connecting port to realize the start and stop of internal circulation, which is convenient for damper installation and fixation.

[0046] In one embodiment of this application, the outer casing is provided with a first positioning slot and a second positioning slot, the first positioning slot being close to the maintenance port and the second positioning slot being far from the maintenance port, and the first positioning slot and the second positioning slot being arranged to extend vertically.

[0047] One end of the first filter screen is inserted into the first positioning slot, and the other end of the first filter screen is inserted into the second positioning slot.

[0048] The above technical solution has the following advantages or beneficial effects: By providing vertically arranged positioning slots in the housing, the two ends of the first filter screen can be positioned using the two positioning slots to ensure that the first filter screen is securely and reliably assembled in the housing. Simultaneously, by bending the first filter screen, it can be disengaged from the first positioning slot and pulled out through the first maintenance opening, thereby improving the ease of disassembly.

[0049] In one embodiment of this application, the outer shell is further provided with a limiting slot, the limiting slot is arranged to extend laterally, and the first filter screen is clipped in the limiting slot.

[0050] The above technical solution has the following advantages or beneficial effects: by setting a laterally extending limiting groove in the housing, the limiting groove can further limit the first filter screen in the length direction to ensure that the first filter screen remains stable during use, thereby meeting the requirement that air flows through the first filter screen for filtration.

[0051] In one embodiment of this application, a limiting block is further provided in the outer casing, and the first filter screen is arranged between the limiting block and the total heat exchange core.

[0052] The above technical solution has the following advantages or beneficial effects: by adding a limiting block in the outer shell, the limiting block is arranged on the side of the first filter screen away from the total heat exchange core. In this way, during the assembly process, the first filter screen can be limited by the limiting block, and during the disassembly process, the operator can pull the first filter screen away from the limiting block to complete the disassembly, thereby improving the convenience of disassembly.

[0053] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is one of the structural schematic diagrams of an embodiment of the indoor unit of the air conditioner in this application;

[0056] Figure 2 This is a second structural schematic diagram of an embodiment of the indoor unit of the air conditioner according to this application;

[0057] Figure 3This is the third structural schematic diagram of an embodiment of the indoor unit of the air conditioner in this application;

[0058] Figure 4 for Figure 1 One of the partial structural diagrams of an indoor unit of a central air conditioner;

[0059] Figure 5 for Figure 1 Partial structural schematic diagram of a central air conditioning indoor unit (Part 2);

[0060] Figure 6 for Figure 1 The third partial structural diagram of a central air conditioning indoor unit;

[0061] Figure 7 for Figure 4 Schematic diagram of the central insulation frame;

[0062] Figure 8 for Figure 4 One of the structural diagrams of the central fan assembly;

[0063] Figure 9 for Figure 4 The second structural schematic diagram of the central fan assembly;

[0064] Figure 10 for Figure 6 Schematic diagram of the central threading plate;

[0065] Figure 11 for Figure 4 One of the structural diagrams of the central electrical control box;

[0066] Figure 12 for Figure 4 The second structural schematic diagram of the central electrical control box;

[0067] Figure 13 for Figure 4 Exploded view of the central electrical control box;

[0068] Figure 14 for Figure 4 Schematic diagram of the heating element;

[0069] Figure 15 for Figure 4 Exploded view of the central heating component;

[0070] Figure 16 This is a schematic diagram of another embodiment of the indoor unit of the air conditioner in this application;

[0071] Figure 17 for Figure 16 A partial structural diagram of the indoor unit of a central air conditioner;

[0072] Figure 18 for Figure 17A partial structural diagram of the indoor unit of a central air conditioner;

[0073] Figure 19 for Figure 18 A magnified view of a portion of region A in the middle;

[0074] Figure 20 for Figure 16 A schematic diagram of the structure of the first filter screen in the middle;

[0075] Figure 21 for Figure 20 A magnified view of a portion of region B in the middle.

[0076] Figure label:

[0077] 1. Outer casing; 11. Indoor air outlet; 12. Indoor return air outlet; 13. Outdoor air outlet; 14. Outdoor air inlet; 15. First partition; 16. Second partition; 17. Wiring board; 18. First filter; 19. Second filter;

[0078] 151. Folded edge; 161. Air damper; 171. First wiring section; 172. Second wiring section; 101. Bearing section; 102. Fixing section; 103. Slot; 104. Maintenance port; 105. Inspection door; 106. Limiting slot; 107. Limiting block; 108. Mounting plate; 109. Pressing component; 181. Deformation section; 182. First frame; 183. Notch structure; 184. Structural reinforcement; 191. Pulling section; 1081. Limiting support section; 1082. Clearance groove; 1091. Fixing section; 1092. Pressing section;

[0079] 2. Total heat exchange core;

[0080] 3. Fan assembly; 31. Mounting bracket; 32. Fan;

[0081] 311. Ventilation gap; 312. Clearance gap; 313. Load-bearing mating part; 314. Fixed mating part;

[0082] 4. Electrical control box; 41. Electrical controller; 42. Air inlet; 43. Air outlet; 44. First fireproof board; 45. Second fireproof board; 46. Wiring terminal;

[0083] 5. Heat exchanger; 51. First mounting plate; 52. Second mounting plate; 53. Drain pump;

[0084] 6. Insulation frame; 61. First connection port; 62. Second connection port; 63. Third connection port; 64. Fourth connection port; 65. Partition plate; 66. Positioning groove; 67. First mounting part; 68. Second mounting part; 69. Wiring trough;

[0085] 651. Ventilation opening;

[0086] 7. Heating assembly; 71. Electric auxiliary support; 72. Electric heating component; 711. First plug-in part; 712. First connecting part; 713. Second plug-in part; 714. Second connecting part; 721. First plug-in mating part; 722. First connecting mating part; 723. First end; 724. Second end; 725. Electric heating element. Detailed Implementation

[0087] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0088] The indoor unit of the air conditioner in this application typically includes a casing, a fan, and a total heat exchange core installed in the casing. The casing is provided with two vents connecting to the indoor side and two vents connecting to the outdoor side. One fan draws in indoor air through the indoor vent, flows through the total heat exchange core for heat exchange, and then discharges it to the outside through the outdoor vent. The other fan draws in outdoor air through the outdoor vent, flows through the total heat exchange core for heat exchange, and then discharges it into the room through the indoor vent.

[0089] like Figures 1-4 As shown, one embodiment of this application provides an indoor air conditioning unit, including: a housing 1, on which an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 are provided. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0090] Specifically, the outer casing 1 serves as the mounting structure for the indoor unit of the air conditioner. It is equipped with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 to meet the requirements for indoor and outdoor air flow.

[0091] Normally, the indoor air outlet 11 and the indoor air return outlet 12 are formed on the first end face of the outer casing 1, and the outdoor air outlet 13 and the outdoor air inlet 14 are formed on the second end face of the outer casing 1. The first end face and the second end face of the outer casing 1 are arranged opposite to each other.

[0092] The indoor unit of the air conditioner includes a total heat exchange core 2, which is disposed in the outer casing 1. The total heat exchange core 2 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0093] Specifically, the total heat exchange core 2 is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, and the exhaust heat exchange channel and the fresh air heat exchange channel conduct heat to each other; the indoor return air vent 12, the exhaust heat exchange channel, and the outdoor air outlet 13 form an exhaust channel in the outer shell 1, and the outdoor air inlet 14, the fresh air heat exchange channel, and the indoor air outlet 11 form a fresh air channel in the outer shell 1.

[0094] Heat exchanger 5, which is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct.

[0095] Specifically, the heat exchanger 5 can perform heat exchange treatment on the airflow flowing through the fresh air duct, and the heat-treated airflow will be output to the room through the indoor air outlet 11.

[0096] Two fan assemblies 3, each fan assembly 3 including a mounting bracket 31 and a fan 32, the fan 32 being mounted on the mounting bracket 31; one fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct.

[0097] Specifically, two fan assemblies 3 are used to meet the driving requirements of indoor and outdoor air flow. One fan assembly 3 is disposed in the fresh air duct to allow fresh outdoor air to enter the housing 1, be heated by the total heat exchange core 2, and then be output from the indoor air outlet 11. The other fan assembly 3 is disposed in the exhaust air duct to allow stale indoor air to enter the housing 1, be heated by the total heat exchange core 2, and then be output from the outdoor air outlet 13.

[0098] In one embodiment of this application, as Figure 4 , Figures 14-15 As shown, an electric heating element 7 is also provided in the outer casing to heat the air after it has been heat-treated by the heat exchanger 5.

[0099] In one embodiment, the electric heating assembly 7 includes an electric auxiliary support 71, on which a first insertion portion 711 and a first connecting portion 712 are provided.

[0100] The electric heating assembly 7 includes an electric heating component 72, one end of which is provided with a first insertion mating part 721, and the other end of which is provided with a first connecting mating part 722.

[0101] The first plug-in part 711 is inserted into the first plug-in mating part 721, and the first connecting part 712 and the first connecting mating part 722 are fixedly connected together by screws; the electric auxiliary bracket 71 is disposed in the housing and located between the heat exchanger and the indoor air outlet.

[0102] Specifically, the electric heating assembly 7 uses an electric heating element 72 for heating. The electric heating element 72 generates heat after being energized to meet the heating requirements. In order to fix the electric heating assembly 7 in the housing, the electric heating element 72 is fixedly installed inside the housing by an electric auxiliary bracket 71.

[0103] To facilitate the disassembly and maintenance of the electric heating component 72, during the assembly process, one end of the electric heating component 72 is installed on the electric auxiliary bracket 71 by inserting it into the bracket, while the other end of the electric heating component 72 is fixedly installed on the electric auxiliary bracket 71 by screws, thereby reducing the number of screws required.

[0104] During disassembly, only the screws at the corresponding ends of the electric heating component 72 need to be unscrewed and removed. The first insertion mating part 721 of the electric heating component 72 can then be pulled directly from the first insertion part 711 on the electric auxiliary bracket 71, thereby reducing the number of screws that need to be removed.

[0105] The electric auxiliary bracket 71 is provided with a first plug-in part 711, and the electric heating component 72 is provided with a first plug-in mating part 721. One end of the electric heating component 72 can be installed on the electric auxiliary bracket 71 by plugging in, and the other end of the electric heating component 72 is fixedly installed by screw connection. In this way, the number of screws used can be reduced. Only a small number of screws are needed to fix the fixing part and the fixed mating part together to complete the assembly. In the later maintenance process, the maintenance personnel can remove the screws on the corresponding end of the electric heating component 72 and pull the electric heating component 72 out of the electric auxiliary bracket 71, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0106] In another embodiment, the electric auxiliary bracket 71 is provided with a second plug-in portion 713 and a second connecting portion 714, and the top plate of the housing is provided with a second plug-in mating portion (not shown) and a second connecting mating portion (not shown); the second plug-in portion 713 is inserted into the second plug-in mating portion, and the second connecting portion 714 and the second connecting mating portion are fixedly connected together by screws.

[0107] Specifically, the electric heating assembly 7 uses an electric heating element 72 for heating. The electric heating element 72 generates heat after being energized to meet the heating requirements. In order to fix the electric heating assembly 7 in the housing, the electric heating element 72 is fixedly installed inside the housing by an electric auxiliary bracket 71.

[0108] To facilitate the disassembly and maintenance of the heating component 7, during assembly, the electric auxiliary bracket 71 is inserted into the second insertion mating part on the outer casing via the second insertion part 713. Then, the second connecting part 714 and the second connecting mating part are fixedly connected by screws. Since the electric auxiliary bracket 71 can be connected to the outer casing beforehand by insertion, the amount of screws used can be effectively reduced, thereby improving assembly efficiency.

[0109] Similarly, when disassembling and repairing the heating assembly 7, only a small number of screws need to be removed, and the second plug-in portion 713 of the electric auxiliary bracket 71 can be pulled directly from the second plug-in mating portion on the housing, thereby reducing the number of screws to be removed.

[0110] The electric auxiliary bracket 71 is provided with a second plug-in part 713, and correspondingly, the outer casing is provided with a second plug-in mating part. The electric auxiliary bracket 71 can be first installed in the outer casing by plugging in, and then fixed by screw connection. In this way, the number of screws used can be reduced. Only a small number of screws are needed to fix the fixing part and the fixing mating part together to complete the assembly. In the later maintenance process, the maintenance personnel only need to remove a small number of screws to remove the electric heating component 7 from the outer casing, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0111] In one embodiment of this application, the electric auxiliary support 71 is provided with a first plug-in portion 711 and a first connecting portion 712, and the electric auxiliary support 71 is also provided with a second plug-in portion 713 and a second connecting portion 714.

[0112] One end of the electric heating component 72 is provided with a first insertion mating part 721, and the other end of the electric heating component 72 is provided with a first connecting mating part 722.

[0113] The top plate of the outer casing is provided with a second insertion mating part (not shown) and a second connecting mating part (not shown).

[0114] The first insertion part 711 is inserted together with the first insertion mating part 721, and the first connecting part 712 and the first connecting mating part 722 are fixedly connected together by screws.

[0115] The second insertion part 713 is inserted into the second insertion mating part, and the second connecting part 714 and the second connecting mating part are fixedly connected together by screws.

[0116] The electric auxiliary bracket 71 is provided with a first plug-in part 711, and the electric heating component 72 is provided with a first plug-in mating part 721. One end of the electric heating component 72 can be installed on the electric auxiliary bracket 71 by plugging in, and the other end of the electric heating component 72 is fixedly installed by screw connection. In this way, the number of screws used can be reduced. Only a small number of screws are needed to fix the fixing part and the fixed mating part together to complete the assembly. In the later maintenance process, the maintenance personnel can remove the screws on the corresponding end of the electric heating component 72 and pull the electric heating component 72 out of the electric auxiliary bracket 71, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance. Similarly, the electric auxiliary bracket 71 is provided with a second plug-in part 713, and correspondingly, the outer casing is provided with a second plug-in mating part. The electric auxiliary bracket 71 can be first installed in the outer casing by plugging in, and then fixed by screw connection. In this way, the number of screws used can be reduced. Only a small number of screws are needed to fix the fixing part and the fixing mating part together to complete the assembly. In the later maintenance process, the maintenance personnel only need to remove a small number of screws to remove the electric heating component 7 from the outer casing, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0117] In one embodiment of this application, the electric heating component 72 includes a first end 723, a second end 724, and an electric heating element 725, wherein the electric heating element 725 is disposed between the first end 723 and the second end 724;

[0118] The first end 723 is provided with the first insertion mating part 721, and the second end 724 is provided with the first connecting mating part 722.

[0119] Specifically, for the electric heating component, the electric heating element 725 can be connected to a power supply cable, so that the electric heating element 725 can generate heat when energized. The two ends of the electric heating element 725 are respectively equipped with a first end 723 and a second end 724. The first end 723 and the second end 724 are supported by insulating material, so as to satisfy the requirement of mounting the electric heating element 725 on the electric auxiliary bracket 71.

[0120] The first end 723 is provided with a first insertion mating part 721 to allow it to be inserted into the electric auxiliary bracket 71, while the second end 724 is fixedly connected to the electric auxiliary bracket 71 by screws.

[0121] The physical manifestations of the aforementioned plug-in portion and plug-in mating portion can have various structural forms. For example, the plug-in portion can be a slot, and the plug-in mating portion can be a tongue; or, the plug-in portion can be a tongue, and the plug-in mating portion can be a slot. No further restrictions or elaborations are made here. The physical manifestations of the connecting portion and connecting mating portion can be hole structures. For example, the connecting portion can be a threaded hole, and the connecting mating portion can be a through hole; or, the connecting portion can be a through hole, and the connecting mating portion can be a threaded hole.

[0122] The electric heating component 72 adopts a split design. The ends of the electric heating component 725 are respectively provided with a first end 723 and a second end 724. The first end 723 is provided with a first insertion mating part 721 to meet the requirements of insertion connection with the electric auxiliary bracket 71. The second end 724 is provided with a first connecting mating part 722 to meet the requirement of fixed installation on the electric auxiliary bracket 71 by screws.

[0123] In one embodiment of this application, the first connecting portion 712 and the first connecting mating portion 722 are arranged adjacent to the indoor air outlet, while the first plug-in portion 711 and the first plug-in mating portion 721 are arranged away from the indoor air outlet.

[0124] Specifically, after the heating component 7 is assembled into the housing, the first connecting part 712 and the first connecting mating part 722 are positioned near the indoor air outlet to facilitate disassembly and maintenance. This way, when the electric heating component 72 needs to be disassembled and maintained, the operator does not need to open the housing; they only need to insert tools through the indoor air outlet into the housing and remove the screws on the first connecting part 712 and the first connecting mating part 722. Then, the electric heating component 72 can be pulled so that it can be tilted and pulled out of the indoor air outlet.

[0125] When reassembling after maintenance, the electric heating component 72 is inserted into the indoor air outlet at an angle, and the first plug-in mating part 721 is inserted into the first plug-in part 711. Then, the first connecting part 712 and the first connecting mating part 722 are fixedly connected together by screws. This allows the electric heating component 72 to be disassembled and assembled without opening the outer casing, which is more conducive to improving the convenience of maintenance.

[0126] By arranging the first connecting part 712 and the first connecting mating part 722 close to the indoor air outlet, during maintenance and disassembly, maintenance personnel can insert a screwdriver into the housing through the indoor air outlet to remove the screws on the first connecting part 712 and the first connecting mating part 722. Then, the electric heating component 72 can be tilted so that it can be directly removed from the indoor air outlet. Similarly, during maintenance and installation, the electric heating component 72 is tilted into the housing through the indoor air outlet and inserted into the auxiliary bracket, and then fixed with screws, thereby more effectively improving the convenience of maintenance.

[0127] In one embodiment of this application, as Figure 4 , Figures 11-12 As shown, for the electrical control box 4, since the electrical control box 4 contains an electrical controller 41, the electrical controller 41 will generate heat during the operation of the electrical components in the indoor unit of the air conditioner, so it is necessary to perform heat dissipation treatment on the electrical controller 41 in the electrical control box 4.

[0128] Therefore, the electrical control box 4 is provided with an air inlet 42 and an air outlet 43. A heat dissipation channel is formed inside the electrical control box 4 between the air inlet 42 and the air outlet 43. The electrical control box 4 is disposed in the outer shell and located in the air outlet channel.

[0129] Specifically, by placing the electrical control box 4 inside the exhaust duct within the casing, during the operation of the indoor unit of the air conditioner, the indoor return air vent can draw in indoor air and discharge it to the outside through the exhaust duct.

[0130] After the airflow in the exhaust duct reaches the flow channel electrical control box 4, part of the airflow can enter the electrical control box 4 through the air inlet 42. The temperature of the air drawn in by the indoor return air vent is generally not higher than 30 degrees Celsius, so the airflow drawn in by the indoor return air vent can enter the electrical control box 4 to dissipate heat from the electrical controller 41 of the electrical control box 4.

[0131] After the airflow enters the control box 4 and exchanges heat with the controller 41, the heat-exchanged airflow is discharged from the control box 4 through the air outlet and flows back into the exhaust channel and finally discharged to the outside of the outer casing.

[0132] By providing an air inlet 42 and an air outlet 43 on the electrical control box 4, and placing the electrical control box 4 inside the exhaust duct, during the operation of the indoor unit of the air conditioner, the airflow input from the indoor return air vent flows in the exhaust duct, and some of the airflow can enter the electrical control box 4 through the air inlet 42. The airflow entering the electrical control box 4 can exchange heat with the heating electrical components of the controller 41, thereby effectively removing the heat from the electrical control box 4 and expelling it through the exhaust vent. In this way, there is a circulating airflow in the electrical control box 4 for heat dissipation, so that the controller 41 can obtain good heat dissipation. At the same time, the outside of the electrical control box 4 can also be cooled by airflow, thereby improving the heat dissipation efficiency of the electrical box and improving the reliability of equipment operation.

[0133] In another embodiment of this application, the electrical control box 4 is provided with an air inlet 42 and an air outlet 43, and a heat dissipation air channel is formed between the air inlet 42 and the air outlet 43 inside the electrical control box 4, and the electrical control box 4 is disposed inside the outer shell;

[0134] The air inlet 42 is located near the indoor return air vent, and the exhaust vent 43 is located near the exhaust heat exchange channel.

[0135] Specifically, for the electrical control box 4, the air inlet 42 is arranged close to the indoor return air vent. This allows some of the airflow drawn in from the indoor return air vent to enter the electrical control box 4 through the air inlet 42, so as to dissipate heat from the electrical controller 41 of the electrical control box 4.

[0136] After the airflow enters the control box 4 and exchanges heat with the controller 41, the heat-exchanged airflow is discharged from the control box 4 through the air outlet and flows back into the exhaust channel and finally discharged to the outside of the outer casing.

[0137] By providing air inlet 42 and air outlet 43 on the electrical control box 4, with the air inlet 42 close to the indoor return air vent, the airflow flowing in from the indoor return air vent can enter the electrical control box 4 through the air inlet 42. The airflow entering the electrical control box 4 can exchange heat with the heating electrical components of the electrical controller 41, thereby effectively removing the heat from the electrical control box 4. The heat-exchanged airflow is discharged from the air outlet to the outside of the electrical control box 4 and enters the exhaust heat exchange channel of the total heat exchange core. In this way, there is a circulating airflow in the electrical control box 4 for heat dissipation, so that the electrical controller 41 can obtain good heat dissipation. At the same time, the outside of the electrical control box 4 can also be cooled by airflow, thereby improving the heat dissipation efficiency of the electrical box and improving the reliability of equipment operation.

[0138] The airflow flowing into the housing from the indoor return air inlet, part of which flows directly into the total heat exchange core, and the remaining airflow flows into the electrical control box 4 through the air inlet 42 and is discharged from the exhaust vent 43 and flows into the total heat exchange core.

[0139] By allowing a portion of the airflow from the indoor return air vent into the outer casing to flow into the electrical control box 4 and directly exchange heat with the electrical controller 41 for heat dissipation, and simultaneously allowing airflow outside the electrical control box 4 for heat dissipation, the efficiency of heat dissipation is improved by achieving heat dissipation through airflow both inside and outside the electrical control box 4.

[0140] In one embodiment, the housing is further provided with a first partition plate, one end of which is connected to the total heat exchange core, and the first partition plate separates the two fan assemblies.

[0141] The outer casing is also provided with a second partition plate, one end of which is connected to the total heat exchange core, and the second partition plate separates the indoor air outlet and the indoor air return outlet.

[0142] The total heat exchange core separates the outdoor air outlet and the outdoor air inlet.

[0143] Specifically, the two fan assemblies 3 are arranged on the same side of the housing 1, which facilitates rapid assembly of the two fan assemblies 3 in the same direction during the assembly process. Furthermore, the two fan assemblies 3 are separated by a first partition plate 15 so that the two fan assemblies 3 do not interfere with each other during operation.

[0144] By further providing a second partition plate 16 in the outer casing 1, the second partition plate 16 isolates the ports of the exhaust heat exchange channel and the fresh air heat exchange channel of the total heat exchange core 2 adjacent to the indoor side from each other, so as to meet the installation requirements of the total heat exchange core 2.

[0145] Among the four corners of the total heat exchange core 2, the corner facing the indoor side is separated by the second partition plate 16, and the corner facing the fan assembly 3 side is separated by the first partition plate 15. The other two corners of the total heat exchange core 2 can be connected to the corresponding side wall of the outer shell 1 using conventional installation methods, so as to ultimately achieve mutual isolation between the exhaust duct and the fresh air duct.

[0146] In one embodiment, the second partition plate is provided with a connecting port, and a damper is provided in the connecting port. The connecting port is configured to connect the indoor air outlet and the indoor air return outlet, and the damper is configured to open and close the connecting port.

[0147] Specifically, in order to enable the indoor return air vent 12 and indoor air outlet 11 to be interconnected when the exhaust air duct and fresh air duct are in internal circulation, a damper 161 can be directly added between the inlet of the exhaust air heat exchange channel and the outlet of the fresh air heat exchange channel of the total heat exchange core 2.

[0148] When damper 161 is closed, indoor return air vent 12 and indoor air outlet vent 11 are isolated, thus isolating the exhaust duct and fresh air duct to meet the requirement of independent indoor and outdoor air intake and exhaust. At this time, the dampers of outdoor air inlet 14 and outdoor air outlet 13 are in the open state.

[0149] When internal circulation is required, the damper 161 can be opened. The damper 161 connects the indoor return air vent 12 and the indoor air outlet 11 at the total heat exchange core 2. At this time, the dampers of the outdoor air inlet 14 and the outdoor air outlet 13 are in the closed state.

[0150] In one embodiment, the air inlet 42 is provided on the end face of the electrical control box 4 opposite to the indoor return air vent, and the exhaust vent 43 is provided on the side wall of the electrical control box 4 opposite to the second partition plate.

[0151] The airflow flowing into the housing from the indoor return air inlet, part of which flows directly into the connecting port, and the remaining part flows into the electrical control box 4 through the air inlet 42 and is discharged from the exhaust port 43 and flows into the connecting port.

[0152] Specifically, in order to meet the heat dissipation requirements of the control box 4 during the internal circulation process of the indoor unit of the air conditioner, an exhaust hole 43 is provided on the side wall of the control box 4 facing the second partition. The heat-exchanged gas discharged from the control box 4 can enter the other side of the second partition through the damper and be discharged from the indoor air outlet.

[0153] By providing an air inlet 42 at the end of the electrical control box 4 to be arranged opposite to the indoor return air inlet, the airflow flowing into the outer casing from the indoor return air inlet can enter the electrical control box 4 for heat dissipation. As for the airflow output from the electrical control box 4, since the exhaust vent 43 is located on the side wall of the electrical control box 4 and arranged opposite to the second interval, the heat dissipation requirements of the electrical control box 4 can be met during the fresh air exchange and internal circulation processes of the air conditioner indoor unit, thereby improving the reliability of use.

[0154] In one embodiment of this application, the air inlet 42 is arranged away from the air outlet 43.

[0155] Specifically, by arranging the air inlet 42 away from the exhaust vent 43, the air intake and exhaust of the electrical control box 4 can be effectively isolated to avoid mutual interference between the airflow of the air inlet 42 and the exhaust vent 43, thereby improving heat dissipation efficiency.

[0156] In one embodiment of this application, the air inlet 42 and the air outlet 43 are arranged at the bottom of the electrical control box 4.

[0157] Specifically, by arranging the air inlet 42 at the bottom of the electrical control box 4, the airflow entering the electrical control box 4 through the air inlet 42 exchanges heat with the electrical controller 41 and becomes hot air. During the flow of hot air, the hot air rises and flows to the top area of ​​the electrical control box 4, while the exhaust vent 43 is located at the bottom of the electrical control box 4. This allows the hot air to rise and flow to the area above the exhaust vent 43 and then flow downwards again. This allows for more comprehensive and effective heat dissipation of the electrical components in different parts of the electrical controller 41 in the electrical control box 4.

[0158] In one embodiment of this application, the electrical control box 4 is further provided with a first fireproof plate 44, which covers the outside of the air inlet 42, and an air inlet gap is formed between the first fireproof plate 44 and the electrical control box 4.

[0159] Specifically, during operation, the electrical controller 41 in the electrical control box 4 may generate electrical sparks due to a malfunction. These sparks can be transmitted to the outside of the electrical control box 4 through the air inlet 42. In order to prevent the electrical sparks from damaging the external components of the electrical control box 4, a first fireproof plate 44 can be placed on the outside of the air inlet 42.

[0160] During use, when an electric spark is output from the air inlet 42, the electric spark can be blocked by the first fireproof plate 44 on the outside of the air inlet, so as to prevent the electric spark from spreading out arbitrarily, thereby improving the safety and reliability of use.

[0161] By providing a first fireproof plate 44 on the electrical control box 4, the first protective plate can shield the outside of the air inlet 42. In this way, when the electrical control box 4 generates an electric spark due to a circuit fault, the electric spark that is ejected from the air inlet 42 will be blocked by the first fireproof plate 44, so as to avoid the electric spark from damaging or even igniting the components outside the electrical control box 4, thereby improving the safety and reliability of use.

[0162] In one embodiment of this application, the electrical control box 4 is further provided with a second fireproof plate 45, which covers the outside of the exhaust hole 43, and an exhaust gap is formed between the second fireproof plate 45 and the electrical control box 4.

[0163] Specifically, during operation, the electrical controller 41 in the electrical control box 4 may generate electric sparks due to a malfunction. These electric sparks can be transmitted to the outside of the electrical control box 4 through the vent 43. In order to prevent the electric sparks from damaging the external components of the electrical control box 4, a second fireproof plate 45 can be placed on the outside of the vent 43.

[0164] During use, when an electric spark is output from the air inlet 42, the electric spark can be blocked by the second fireproof plate 45 on the outside of the exhaust vent 43, so as to prevent the electric spark from spreading out arbitrarily, thereby improving the safety and reliability of use.

[0165] By installing a second fireproof plate 45 on the electrical control box 4, the second protective plate can shield the outside of the air outlet. In this way, when the electrical control box 4 generates electric sparks due to circuit faults, the electric sparks spraying out from the air outlet will be blocked by the second fireproof plate 45, so as to avoid the electric sparks damaging or even igniting the components outside the electrical control box 4, thereby improving the safety and reliability of use.

[0166] In one embodiment of this application, the electrical control box 4 is further provided with a wiring terminal 46, which is exposed outside the electrical control box 4 and is electrically connected to the electrical controller 41.

[0167] Specifically, since the control box 4 is built into the outer casing, in order to facilitate electrical connection between the control box 4 and external electrical components, a terminal block 46 can be provided on the control box 4. The terminal block 46 extends to the outside of the control box 4, and the terminal block 46 is pre-connected to the controller 41. External electrical components are connected to the terminal block 46 via cables to improve the convenience of circuit connection.

[0168] By providing wiring terminals 46 on the electrical control box 4, when the electrical components in the housing are connected to the electrical controller 41 in the electrical control box 4, the electrical connection can be quickly completed by plugging into the wiring terminals 46 on the outside of the electrical control box 4, thereby improving assembly efficiency.

[0169] In one embodiment of this application, in order to improve the ease of disassembly and assembly of the fan assembly 3, the installation method of the fan assembly 3 is structurally improved as follows.

[0170] like Figure 6 and Figure 8 As shown, the top plate of the outer casing 1 is provided with two sets of assembly units. Each set of assembly units includes a support part 101 and a first fixing part 102. The mounting bracket 31 is provided with a support mating part 313 and a fixing mating part 314. The support mating part 313 is screwlessly assembled onto the support part 101, and the fixing mating part 314 is fixedly connected to the first fixing part 102 by screws.

[0171] Specifically, the fan 32 is fixedly mounted on the top plate of the housing 1 via a mounting bracket 31. The top plate of the housing 1 is provided with a support portion 101 and a first fixing portion 102. Correspondingly, the mounting bracket 31 is provided with a support mating portion 313 and a fixing mating portion 314. The support portion 101 and the support mating portion 313 cooperate to achieve screwless assembly, while the first fixing portion 102 and the fixing mating portion 314 cooperate to be installed using screws.

[0172] Thus, in the actual assembly process, the mounting bracket 31 is first installed by engaging the bearing part 101 with the bearing part 313, and then the fixing part 314 is fixedly installed on the first fixing part 102 by screws.

[0173] Similarly, during later maintenance, the screws between the first fixing part 102 and the fixing mating part 314 can be removed first, and then the bearing mating part 313 can be separated from the bearing part 101, so that the fan assembly 3 can be removed from the housing 1.

[0174] By providing two sets of assembly units on the outer casing 1, the bearing part 101 in the assembly unit can be connected to the bearing mating part 313 on the mounting bracket 31 without screws, while the first fixing part 102 in the assembly unit can be connected to the fixing mating part 314 on the mounting bracket 31 with screws. In this way, during the actual assembly process, the operator can reduce the number of screws used by cooperating with the bearing mating part 313 and the bearing part 101. Only a small number of screws are needed to fix the first fixing part 102 and the fixing mating part 314 together to complete the assembly. Similarly, during the later maintenance process, the operator only needs to remove a small number of screws to remove the fan assembly 3 from the outer casing 1, thereby reducing the difficulty of disassembly and assembly and improving the convenience of maintenance.

[0175] In one embodiment, the bearing mating part 313 is slidably mounted on the bearing part 101.

[0176] Specifically, the bearing mating part 313 and the bearing part 101 can be mated by a sliding connection, and the specific mating structure can be a conventional sliding installation structure such as a slide rail and a slide groove.

[0177] In this way, during the assembly process, the bearing mating part 313 is slidably assembled onto the bearing part 101, and then the first fixing part 102 and the fixing mating part 314 are tightened and fixed by screws.

[0178] In some embodiments, the physical manifestation of the first fixing part 102 can be a screw hole, and the physical manifestation of the fixing mating part 314 can be a fixing hole, which will not be elaborated or limited here.

[0179] In one embodiment, the bearing mating part 313 overlaps the bearing part 101.

[0180] Specifically, the cooperation between the bearing mating part 313 and the bearing part 101 can be an overlapping method. The specific cooperation structure can be that the bearing mating part 313 is an overlapping plate extending out of the mounting bracket 31, and the bearing part 101 can be a hanging plate formed on the top plate of the outer shell 1, with the overlapping plate overlapping the hanging plate.

[0181] In one embodiment, the bearing mating part 313 is inserted into the bearing part 101.

[0182] Specifically, the cooperation between the bearing mating part 313 and the bearing part 101 can be by plugging in. The specific cooperation structure can be that the bearing mating part 313 is a plug plate extending out of the mounting bracket 31, and the bearing part 101 can be a slot formed on the top plate of the outer casing 1, with the plug plate inserted into the slot.

[0183] In one embodiment, in order to achieve a compact design, the two fan assemblies 3 are arranged side by side on one side of the housing 1;

[0184] A first partition plate 15 is provided between the two fan assemblies 3, and the assembly units are respectively provided on both sides of the first partition plate 15. The first partition plate 15 is located between the side wall of the outer casing 1 and the total heat exchange core 2.

[0185] Specifically, the two fan assemblies 3 are arranged on the same side of the housing 1, which facilitates rapid assembly of the two fan assemblies 3 in the same direction during the assembly process. Furthermore, the two fan assemblies 3 are separated by a first partition plate 15 so that the two fan assemblies 3 do not interfere with each other during operation.

[0186] By arranging the two fan assemblies 3 on the same side of the housing 1 and separating them by the first partition plate 15, the internal component layout of the housing 1 is made more compact, thus achieving a compact structural design. At the same time, the first partition plate 15 separates the two fan assemblies 3, thereby achieving mutual isolation between the fresh air channel and the exhaust air channel, ensuring good heat exchange between the incoming and outgoing air inside and outside the housing 1 and that the air paths do not interfere with each other.

[0187] In one embodiment, the two fan assemblies 3 are arranged side by side between the indoor air outlet 11 and the outdoor air outlet 13;

[0188] The outlet of one of the fans 32 is connected to the outdoor air outlet 13, and the outlet of the other fan 32 is connected to the indoor air outlet 11.

[0189] Specifically, two fan assemblies 3 are arranged on the same side of the housing 1 and located between the indoor air outlet 11 and the outdoor air outlet 13; thus, the fan assembly 3 adjacent to the indoor air outlet 11 is used to drive airflow in the fresh air duct, and the fan assembly 3 adjacent to the outdoor air outlet 13 is used to drive airflow in the exhaust air duct.

[0190] By arranging the fan assembly 3 between the indoor air outlet 11 and the outdoor air outlet 13, the air output to the outside can be efficiently discharged to the outside through the outdoor air outlet 13 under the action of the corresponding fan 32. Similarly, the air output to the inside can be efficiently transported to the inside under the action of the corresponding fan 32, thereby increasing the indoor air volume, reducing the air resistance of the fan 32, and improving the air supply efficiency.

[0191] In one embodiment, the heat exchanger 5 is disposed between the indoor air outlet 11 and the corresponding outlet of the fan 32.

[0192] Specifically, the heat exchanger 5 is installed between the indoor air outlet 11 and the corresponding fan 32, so that the airflow output by the fan 32 blows directly onto the heat exchanger 5.

[0193] By placing the heat exchanger 5 between the indoor air outlet 11 and the outlet of the fan 32, the airflow output from the outlet of the fan 32 blows directly onto the heat exchanger 5, thereby improving the heat exchange efficiency between the airflow and the heat exchanger 5, and thus improving the heat exchange efficiency of the indoor unit of the air conditioner.

[0194] In one embodiment, a partition plate 65 is further provided in the outer casing 1, and a vent 651 is provided on the partition plate 65. The partition plate 65 covers the inner side of the indoor air outlet 11 inside the outer casing 1. The partition plate 65 separates the indoor air outlet 11 and the indoor return air outlet 12. The indoor air outlet 11 is connected to the outlet of the corresponding fan 32 through the vent 651. The heat exchanger 5 is located between the vent 651 and the indoor air outlet 11.

[0195] Specifically, the partition plate 65 provided in the outer casing 1 can form a space for installing the heat exchanger 5 around the outdoor air outlet 13, so as to facilitate the installation of the heat exchanger 5 at the indoor air outlet 11 and ensure that the airflow flowing from the fresh air duct can effectively exchange heat with the heat exchanger 5.

[0196] By setting a partition plate 65 in the outer casing 1 to separate the indoor air outlet 11 and the indoor air return outlet 12, the partition plate 65 covers the area of ​​the indoor air outlet 11 to form a space for installing the heat exchanger 5, so that the airflow generated by the corresponding fan 32 is blown to the heat exchanger 5 through the vent 651 for heat exchange and then output from the indoor air outlet 11, ensuring that the airflow output from the indoor air outlet 11 receives sufficient heat exchange, thereby improving the heat exchange efficiency.

[0197] In one embodiment, a second spacer 16 is further provided in the outer shell 1; the second spacer 16 is disposed between the partition plate 65 and the total heat exchange core 2.

[0198] Specifically, by further setting a second partition plate 16 in the outer casing 1, the second partition plate 16 isolates the ports of the exhaust heat exchange channel and the fresh air heat exchange channel of the total heat exchange core 2 adjacent to the indoor side from each other, so as to meet the installation requirements of the total heat exchange core 2.

[0199] Among the four corners of the total heat exchange core 2, the corner facing the indoor side is separated by the second partition plate 16, and the corner facing the fan assembly 3 side is separated by the first partition plate 15. The other two corners of the total heat exchange core 2 can be connected to the corresponding side wall of the outer shell 1 using conventional installation methods, so as to ultimately achieve mutual isolation between the exhaust duct and the fresh air duct.

[0200] In one embodiment of this application, such as Figure 5 , Figure 8 and Figure 9 As shown, in order to improve the air delivery efficiency of fan 32, the following structural improvements are made to the indoor unit of the air conditioner.

[0201] This application provides an indoor air conditioning unit, including: a housing 1, on which an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 are provided. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0202] An indoor unit for an air conditioner includes a total heat exchange core 2, which is disposed in the outer casing 1 and is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0203] An indoor unit for air conditioning includes a heat exchanger 5, which is configured to exchange heat with the airflow passing through the fresh air duct.

[0204] An indoor air conditioning unit includes two fan assemblies 3, each fan assembly 3 including a mounting bracket 31 and a fan 32, the fan 32 being mounted on the mounting bracket 31; one fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct.

[0205] The mounting bracket 31 is spaced apart from the top plate of the outer casing 1. The fan 32 is equipped with a centrifugal fan. The mounting bracket 31 is also provided with a ventilation notch 311, which is configured to allow airflow to flow between the top and bottom of the mounting bracket 31.

[0206] Specifically, for the fan assembly 3, the fan 32 can be a centrifugal fan and is fixedly mounted on the top of the housing 1 by the mounting bracket 31. There is a gap between the mounting bracket 31 and the top plate of the housing 1, so that during the operation of the fan 32, the airflow entering and exiting the total heat exchange core 2 will flow to the upper and lower surfaces of the mounting bracket 31 respectively.

[0207] A ventilation notch 311 is provided on the mounting bracket 31. The ventilation notch 311 connects the upper and lower spaces of the mounting bracket 31. During the operation of the centrifugal fan, when there is a large difference in the air intake volume between the two inlets of the centrifugal fan, the air in the upper and lower layers of the mounting bracket 31 can flow back and forth to automatically balance the air intake volume of the two inlets of the centrifugal fan.

[0208] By providing ventilation gaps 311 on the mounting bracket 31, the upper and lower sides of the mounting bracket 31 can be connected to each other through the ventilation gaps 311. In this way, during the operation of the fan 32, the airflow distribution on both sides of the mounting bracket 31 can be balanced, so that the air intake on both sides of the fan 32 is more uniform, thereby improving the air delivery efficiency of the fan 32.

[0209] In one embodiment, the ventilation opening 311 is arranged on the outside of the fan 32 and away from the total heat exchange core 2.

[0210] Specifically, the ventilation opening 311 is located near the side wall of the outer casing 1, and in order to meet the requirements of the mounting bracket 31 supporting the installation of the fan 32, the ventilation opening 311 is also located on the outside of the fan 32.

[0211] Since the ventilation opening 311 is close to the side wall of the housing 1 and far away from the total heat exchange core 2, it can reduce the area of ​​poor ventilation that is generated near the side wall of the housing 1.

[0212] By providing a ventilation gap 311 at the location of the mounting bracket 31 outside the fan 32, a large space is provided between the ventilation gap 311 and the side wall of the outer casing 1 to meet the vertical ventilation requirements of the mounting bracket 31. At the same time, the ventilation gap 311 is far away from the total heat exchange core 2, which can ensure that sufficient negative pressure is formed at the total heat exchange core 2 to accelerate the flow speed of air in the total heat exchange core 2.

[0213] In one embodiment, the mounting bracket 31 is provided with an avoidance notch 312, the avoidance notch 312 is arranged adjacent to the total heat exchange core 2, and the corresponding corner of the total heat exchange core 2 is sandwiched between the two fans 32.

[0214] Specifically, in order to achieve the requirement of compact installation of internal components of the housing 1, a clearance notch 312 is provided on the mounting bracket 31. The design of the clearance notch 312 allows the heat exchange core 2 to use the space provided by the clearance notch 312 to get closer to the fan 32, so as to achieve a compact structural design inside the housing 1.

[0215] By providing a clearance notch 312 on the mounting bracket 31, the corner of the total heat exchange core 2 will be inserted into the area between the two fans 32 and connected to the first partition plate 15, so that the total heat exchange core 2 can be arranged closer to the fans 32, the components in the housing 1 are more compactly distributed, which is more conducive to the design requirements of overall structural compactness, so as to reduce the overall volume of the housing 1.

[0216] Meanwhile, since the total heat exchange core 2 is closer to the inlet of the fan 32, it is more conducive to increasing the negative pressure at the heat exchange core, so as to accelerate the flow speed of the air in the total heat exchange core 2.

[0217] In one embodiment of this application, as Figures 4-7 As shown, in order to improve the assembly efficiency of the insulation structure installed inside the outer casing 1, the following structural improvements are made to the indoor unit of the air conditioner.

[0218] The indoor unit of the air conditioner includes a housing 1, on which an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 are provided. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0219] The indoor unit of the air conditioner includes a total heat exchange core 2, which is disposed in the outer casing 1. The total heat exchange core 2 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0220] The indoor unit of the air conditioner includes a heat exchanger 5, which is configured to exchange heat with the airflow passing through the fresh air duct.

[0221] The indoor unit of the air conditioner includes two fan assemblies 3, each fan assembly 3 including a mounting bracket 31 and a fan 32, the fan 32 being mounted on the mounting bracket 31; one fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct.

[0222] The indoor unit of the air conditioner includes an insulation frame 6, on which a first connection port 61, a second connection port 62, a third connection port 63 and a fourth connection port 64 are provided;

[0223] The thermal insulation frame 6 is disposed in the outer shell 1 and abuts against the inner side wall of the outer shell 1. The first connection port 61 is connected to the indoor air outlet 11, the second connection port 62 is connected to the indoor return air outlet 12, the third connection port 63 is connected to the outdoor air inlet 14, and the fourth connection port 64 is connected to the outdoor air outlet 13.

[0224] Specifically, when the side walls of the outer shell 1 need to be insulated, the integrated insulation frame 6 can be placed into the outer shell 1. The four sides of the insulation frame 6 will be attached to the corresponding inner side walls of the outer shell 1. Thus, by simply placing the entire insulation frame 6 into the outer shell 1, the four sides of the outer shell 1 can be insulated.

[0225] By adding an insulation frame 6 to the outer shell 1, the side wall of the outer shell 1 can be insulated as a whole to meet the requirements of thermal insulation. The insulation frame 6 is an integral structure, which avoids gaps caused by the assembly structure and has better thermal insulation performance. The relevant components in the outer shell 1 are installed in the insulation frame 6 to improve the accuracy and consistency of assembly, which is more conducive to improving assembly efficiency.

[0226] In one embodiment, the thermal insulation frame 6 is provided with a partition plate 65, and the partition plate 65 is provided with a ventilation opening 651. The partition plate 65 covers the inside of the first connection port 61, and the partition plate 65 separates the first connection port 61 and the second connection port 62. The partition plate 65 divides the thermal insulation frame 6 into a first installation area and a second installation area.

[0227] The heat exchanger 5 is provided in the first installation area, and the total heat exchange core 2 and the fan assembly 3 are provided in the second installation area;

[0228] The outlet of one of the fans 32 is connected to the fourth connection port 64, and the outlet of the other fan 32 is connected to the first installation area through the ventilation port 651.

[0229] The heat exchanger 5 is arranged between the vent 651 and the first connection port 61.

[0230] Specifically, since the insulation frame 6 is built into the outer shell 1, the relevant components in the outer shell 1 are also surrounded by the insulation frame 6. In order to enable the installation of different components in different areas, partitions 65 can also be set in the insulation shelf.

[0231] The partition plate 65 and the insulated shelf are integrated into one structure. Under the action of the partition plate 65, the insulated frame 6 forms a first installation area and a second installation area that are separated from each other. The first installation area is used to install the heat exchanger 5 so that the airflow entering the room can have good heat exchange with the heat exchanger 5, thereby improving the heat exchange efficiency.

[0232] By setting a partition plate 65 in the insulation frame 6, the insulation frame 6 is divided into two installation areas for installing relevant components in the outer shell 1 respectively, so as to improve the accuracy and consistency of assembly and improve the assembly efficiency.

[0233] In one embodiment, for components such as the fan assembly 3, the heat exchange core 2, and the electrical control box 4 that are installed in the second installation area, based on the description in the above embodiment, a first partition plate 15 and a second partition plate 16 can be provided in the second installation area during the actual assembly process.

[0234] Specifically, the two fan assemblies 3 are arranged side by side on one side of the housing 1; a first partition plate 15 is also provided in the housing 1, the first partition plate 15 is located between the two fan assemblies 3; the inner wall of the heat insulation frame 6 is also provided with a positioning groove 66, the end of the first partition plate 15 is inserted into the positioning groove 66; the first partition plate 15 is disposed between the positioning groove 66 and the total heat exchange core 2.

[0235] By providing a positioning groove 66, during the installation of the first partition plate 15, the end of the first partition plate 15 can be inserted into the positioning groove 66, so as to pre-assemble the first partition plate 15 onto the outer shell 1. This can effectively reduce the amount of screws used when fixing the first partition plate 15, thereby improving the efficiency of disassembly and assembly.

[0236] In one embodiment, the first partition plate 15 is provided with a folded edge 151, the end of the first partition plate 15 is inserted into the positioning groove 66, the folded edge 151 is attached to the top plate of the outer shell 1 and is locked in the slot 103, and the folded edge 151 is fixedly connected to the top plate of the outer shell 1 by screws.

[0237] Specifically, for the first partition plate 15, in order to facilitate quick installation by the operator, the end of the first partition plate 15 can be inserted into the positioning groove 66, and the folded edge 151 can be inserted into the slot 103 provided on the top plate of the outer casing 1 at the same time. In this way, the positioning groove 66 and the slot 103 can cooperate to achieve the pre-positioning and assembly of the first partition plate 15. Finally, the folded edge 151 is fixed to the top plate of the outer casing 1 by a single screw.

[0238] By providing a slot 103 on the outer casing 1, during the installation of the first partition plate 15, the folded edge 151 of the first partition plate 15 will be inserted into the slot 103, thereby pre-assembling the first partition plate 15 onto the outer casing 1. Then, the folded edge 151 is fixedly installed on the top plate of the outer casing 1 by a screw to achieve the fixed installation of the first partition plate 15. In this way, the number of screws used during the fixed installation of the first partition plate 15 can be effectively reduced, thereby improving the efficiency of disassembly and assembly.

[0239] In another embodiment, the second spacer 16 is disposed between the partition plate 65 and the total heat exchange core 2.

[0240] Specifically, by setting a second partition plate 16 in the outer casing 1, the second partition plate 16 is connected between the partition plate 65 and the total heat exchange core 2, thereby using the second partition plate 16 to isolate the exhaust air channel and the fresh air channel at the total heat exchange core 2, so as to ensure that the outdoor exhaust air and the indoor air intake air do not affect each other.

[0241] In one embodiment, in order to extend the service life of the total heat exchange core 2, the heat insulation frame 6 is provided with two first mounting parts 67 arranged opposite to each other, and a first filter screen 18 is provided between the two first mounting parts 67.

[0242] The first filter 18 is disposed between the total heat exchange core 2 and the indoor return air vent 12.

[0243] Specifically, the first filter 18 is installed and fixed through two first mounting parts 67 formed in the insulation frame 6. The first filter 18 can filter the air input into the outer shell 1 from the indoor return air vent 12, and then the filtered air enters the total heat exchange core 2.

[0244] The first mounting part 67 can be a physical entity that assembles the first filter screen 18 into place by means of screw fixing or other methods, or it can be a structure such as a slot to meet the installation requirements of the first filter screen 18.

[0245] By setting the first filter 18, the indoor air can be effectively filtered after entering the outer casing 1, thus protecting the total heat exchange core from dust and extending its service life. The first mounting part 67 on the insulation frame 6 allows for easy installation of the first filter 18, improving assembly convenience.

[0246] In one embodiment, the thermal insulation frame 6 is provided with two second mounting parts 68 arranged opposite to each other, and a second filter screen 19 is provided between the two second mounting parts 68;

[0247] The second filter 19 is disposed between the total heat exchange core 2 and the outdoor air inlet 14.

[0248] Specifically, after outdoor air enters the outer casing 1, it is first filtered by the second filter 19 before flowing into the total heat exchange core 2.

[0249] The second mounting part 68 can be used to assemble the second filter screen 19 into place by means of screw fixing or other methods, or it can be a structure such as a slot to meet the installation requirements of the second filter screen 19.

[0250] By setting the second filter 19, outdoor air can be effectively filtered after entering the outer casing 1, thus protecting the total heat exchange core from dust and extending its service life. The second mounting part 68 on the insulation frame 6 allows for easy installation of the second filter 19, improving assembly convenience.

[0251] In another embodiment, in order to improve the heat exchange efficiency between the heat exchanger 5 and the airflow, a first mounting plate 51 is provided between the first end of the heat exchanger 5 and the inner sidewall adjacent to the insulation frame 6, and a second mounting plate 52 is provided between the second end of the heat exchanger 5 and the insulation frame 6. The second mounting plate 52 is inclined toward the indoor air outlet 11 and connected between the indoor air outlet 11 and the indoor return air outlet 12.

[0252] Specifically, the heat exchanger 5 is fixedly installed in the first installation area by the mounting plates on both sides. The first mounting plate 51 and the second mounting plate 52 can provide good fixation and support for the heat exchanger 5 on both sides.

[0253] In addition, the second mounting plate 52 extends to the indoor air outlet 11. The inclined second mounting plate 52 can guide the airflow after heat exchange by the heat exchanger 5, so that the airflow can quickly flow to the indoor air outlet 11.

[0254] By providing mounting plates at both ends of the heat exchanger 5, a relatively enclosed air outlet area is formed between the heat exchanger 5 and the indoor air outlet 11. Furthermore, the second mounting plate 52 extends obliquely toward the indoor air outlet 11. The second mounting plate 52 can guide the airflow after heat exchange by the heat exchanger 5, so that the airflow after heat exchange can flow smoothly to the indoor air outlet 11.

[0255] In one embodiment, a water receiving tray (not shown) is also provided in the outer casing 1, the water receiving tray being located in the first installation area and arranged below the heat exchanger 5.

[0256] Specifically, the water receiving tray will be installed in the first installation area. The water receiving tray and the top plate of the outer shell 1 form a relatively closed heat exchange cavity in the first installation area, so that the airflow entering the heat exchange cavity can exchange heat with the heat exchanger 5 in a good manner.

[0257] Meanwhile, the drip tray can collect the defrosting water from heat exchanger 5.

[0258] In addition, a drain pump 53 is provided in the outer casing 1. The drain pump 53 is arranged above the water receiving tray and between the second mounting plate 52 and the partition plate 65.

[0259] By setting a water collection tray at the bottom of the first installation area to meet the requirements for condensate collection on the evaporator, and arranging the drain pump 53 on the outside of the second installation plate 52, the airflow after heat exchange by the heat exchanger 5 is reduced from being blocked by the drain pump 53 on its way to the indoor air outlet 11, thus reducing the wind resistance at the indoor air outlet 11 and improving the air outlet efficiency.

[0260] In one embodiment of this application, as Figures 4-7 As shown, in order to achieve a compact overall structure, corresponding improvements were made to the design of the air conditioner indoor unit, as detailed below.

[0261] The indoor unit of the air conditioner includes a housing 1, on which an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 are provided. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13.

[0262] The indoor unit of the air conditioner includes a total heat exchange core 2, which is disposed in the outer casing 1. The total heat exchange core 2 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0263] The indoor unit of the air conditioner includes a heat exchanger 5, which is configured to exchange heat with the airflow flowing through the fresh air duct.

[0264] The indoor unit of the air conditioner includes two fan assemblies 3, each fan assembly 3 including a mounting bracket 31 and a fan 32, the fan 32 being mounted on the mounting bracket 31; one fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct;

[0265] The outer casing 1 has a first installation area and a second installation area. The heat exchanger 5 is disposed in the first installation area, and the fan assembly 3 and the total heat exchange core 2 are disposed in the second installation area. The indoor air outlet 11 is connected to the first installation area, and the indoor return air outlet 12, the outdoor air outlet 13 and the outdoor air inlet 14 are connected to the second installation area. The first installation area extends to the indoor return air outlet 12 and partially covers the indoor return air outlet 12 inside the outer casing 1.

[0266] Specifically, because the indoor unit of the air conditioner centrally houses the heat exchanger 5 and the total heat exchange core 2, the number of components inside the outer casing 1 is relatively large. The distance between the indoor return air vent 12 and the indoor water outlet on the outer casing 1 must meet the connection requirements of the user's home piping; therefore, the distance cannot be too small. To make the structure more compact, part of the area of ​​the indoor return air vent 12 can be occupied inside the outer casing 1 to meet the installation requirements of the relevant components.

[0267] Specifically, the first installation area extends to the indoor return air vent 12 and partially covers the indoor return air vent 12 inside the outer casing 1. This further increases the length of the first installation area, allowing components such as the heat exchanger 5 and the drain pump 53 to be installed in the first installation area. Furthermore, it ensures that the heat exchanger 5 has a sufficiently large heat exchange area while maintaining a compact structural design.

[0268] By setting independent first and second installation areas in the outer casing 1, the first installation area is used to meet the installation requirements of the heat exchanger 5. At the same time, in order to meet the compact design requirements of the internal structure of the outer casing 1 and the heat exchanger 5's heat exchange area requirements, the first installation area will occupy part of the area where the indoor return air vent 12 is located, so that part of the indoor return air vent 12 is blocked by the first installation area. In this way, the area between the indoor return air vent 12 and the indoor air outlet vent 11 can be fully utilized to increase the size of the first installation area, so as to meet the installation requirements of the heat exchanger 5 with a larger heat exchange area. On the one hand, the heat exchange area of ​​the heat exchanger 5 can be increased, and on the other hand, the compact design requirements of the internal structure of the outer casing 1 can be met, thereby reducing the overall size of the air conditioner.

[0269] In one embodiment, based on the above embodiment, the insulation frame 6 is divided into a first installation area and a second installation area by a partition plate 65;

[0270] The insulation frame 6 will partially block the indoor return air vent 12 inside the outer shell 1.

[0271] Specifically, by adding an insulation frame 6 to the outer shell 1, on the one hand, the insulation frame 6 can provide integrated insulation for the side walls of the outer shell 1, thereby meeting the requirements for thermal insulation. The insulation frame 6 is an integral structure, avoiding gaps caused by the assembly structure and having better insulation performance. On the other hand, the partition plate 65 in the insulation frame 6 divides the insulation frame 6 into two installation areas for installing relevant components in the outer shell 1 respectively, thereby improving the accuracy and consistency of assembly and further improving assembly efficiency.

[0272] In one embodiment, the ventilation area of ​​the second connection port 62 is smaller than the ventilation area of ​​the indoor return air vent 12;

[0273] The insulation frame 6 partially blocks the indoor return air vent 12 inside the outer shell 1.

[0274] Specifically, by designing the ventilation area of ​​the second connection port 62 to be smaller than that of the indoor return air port 12, the length of the first installation area can be extended inside the outer shell 1 through the insulation frame 6 to meet the installation requirements of the heat exchanger 5 and achieve a compact structural design.

[0275] The area of ​​the indoor return air vent 12 that is blocked by the insulation frame 6 and the ratio of the total open area of ​​the indoor return air vent 12 can be obtained by testing according to different air supply requirements, as long as the requirements of the return air volume of the indoor air conditioning unit are met, and no restrictions are imposed here.

[0276] In another embodiment of this application, such as Figure 6 and Figure 10 As shown, in order to achieve the separation of strong and weak current in the relevant electrical components in the casing 1, the following structural improvements are made to the indoor unit of the air conditioner.

[0277] In one embodiment of this application, the indoor unit of the air conditioner includes a housing 1. The housing 1 is provided with an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13. The outdoor air outlet 13 and the outdoor air inlet 14 are respectively provided with air valves (not marked).

[0278] The indoor unit of the air conditioner includes a total heat exchange core 2, which is disposed in the outer casing 1. The total heat exchange core 2 is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust air duct.

[0279] The indoor unit of the air conditioner includes two fan assemblies 3, each fan assembly 3 including a mounting bracket 31 and a fan 32, the fan 32 being mounted on the mounting bracket 31; one fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct.

[0280] The indoor unit of the air conditioner includes an electrical control box 4, which contains an electrical controller and is mounted on the outer casing 1.

[0281] The outer casing 1 is provided with a first wiring section 171, through which the cable of the air valve is routed and extended. The cable of the air valve extends from the first end of the electrical control box 4 into the electrical control box 4 and is electrically connected to the electrical controller. The cable of the fan 32 is arranged outside the first wiring section 171 and extends from the second end of the electrical control box 4 into the electrical control box 4 and is electrically connected to the electrical controller. The first end and the second end of the electrical control box 4 are arranged opposite to each other.

[0282] Specifically, the outer casing 1 is provided with a first wiring section 171, which can form a cable routing channel for the air supply valve. Furthermore, under the action of the first wiring section 171, the cable of the air valve can be isolated from the cable on the fan 32.

[0283] In addition, the cables of the air valve and the fan 32 extend from different ends of the electrical control box 4 into the electrical control box 4, which more effectively separates the strong and weak currents.

[0284] This avoids the cable of the fan 32 from crossing with the cable of the air valve during the wiring process of the outer casing 1, which would otherwise result in the mixing of strong and weak current.

[0285] Since the strong and weak current cables are isolated from each other, especially the cable of the air valve is protected by separate wiring through the first wiring section 171, the safety of use can be improved.

[0286] By providing independent first wiring sections 171 in the outer casing 1, the cable of the air valve is routed separately as a low-voltage cable through the first wiring section 171, the cable of the air guide valve enters the electrical control box 4 from the first end of the electrical control box 4, and the cable of the fan 32 is routed outside the first wiring section 171 to isolate it from the cable of the air valve. Furthermore, the cable of the fan 32 enters the electrical control box 4 from the second end of the electrical control box 4 to achieve effective separation of strong and weak currents, thereby improving the safety and reliability of the air conditioner indoor unit.

[0287] In another embodiment of this application, the outer casing 1 is provided with a first wiring section 171 and a second wiring section 172, which are isolated from each other. The cable of the air valve is routed through the first wiring section 171 and extends into the electrical control box 4 to be electrically connected to the electrical controller. The cable of the fan 32 is routed through the second wiring section 172 and extends into the electrical control box 4 to be electrically connected to the electrical controller.

[0288] Specifically, in order to simultaneously guide and protect the cables of the air valve and the fan 32, a first wiring section 171 and a second wiring section 172 can be provided in the housing 1. The first wiring section 171 and the second wiring section 172 are completely separated, with sufficient safety distance between them to avoid mutual interference between the high-voltage and low-voltage cables.

[0289] By providing independent first wiring section 171 and second wiring section 172 in the outer casing 1, the cable of the air valve is routed through the first wiring section 171 and guided to extend into the electrical control box 4. Similarly, the cable of the fan 32 is routed through the second wiring section 172 and guided to extend into the electrical control box 4. In this way, the cables of the air valve and the fan 32 are separated from each other, so as to achieve the separation of strong and weak current. On the one hand, the cable routing in the outer casing 1 is more orderly, and on the other hand, it can avoid safety hazards caused by the crossing of strong and weak current, thereby improving the safety and reliability of the air conditioner indoor unit.

[0290] In one embodiment, the first wiring portion 171 is arranged between the top plate of the total heat exchange core 2 and the outer casing 1.

[0291] Specifically, the first wiring section 171 can guide the extension wiring of the damper's cable between the heat exchange core 2 and the top plate of the outer casing 1. In this way, the space between the heat exchange core 2 and the outer casing 1 can be fully utilized to route the damper's cable. On the one hand, this allows the damper's cable to be routed closer to the electrical control box 4. On the other hand, the heat exchange core 2 can shield the damper's cable to organize the wiring harness.

[0292] By placing the first wiring section 171 between the top plate of the heat exchange core 2 and the outer casing 1, the space between the heat exchange core 2 and the top plate of the outer casing 1 can be fully utilized for wiring, thereby eliminating the need for long-distance wiring along the side wall of the outer casing 1 and effectively saving the amount of cable used.

[0293] In one embodiment, two of the fan assemblies 3 are arranged side by side on one side of the housing 1.

[0294] Specifically, by arranging the two fan assemblies 3 on the same side of the housing 1, the cables of the two fans 32 can be wired together, which simplifies the operation of wiring the two fans 32 separately and improves assembly efficiency.

[0295] Furthermore, the two fans 32 are arranged side by side, which facilitates the wiring of the fans 32 together and realizes the neat design of the power cable harness.

[0296] In one embodiment, the electrical control box 4 is disposed in the exhaust duct, and the electrical control box 4 is located on the side of the total heat exchange core 2.

[0297] Specifically, the electrical control box 4 is installed in the exhaust duct formed in the outer casing 1, utilizing the space of the exhaust duct. Simultaneously, within the exhaust duct, the heat generated by the electrical controller within the electrical control box 4 can be carried away by the airflow within the exhaust duct, thus achieving heat dissipation.

[0298] In addition, since the electrical control box 4 is located on one side of the total heat exchange core 2, the cable of the air valve can enter the electrical control box 4 after passing through the total heat exchange core 2, thereby shortening the wiring length.

[0299] By placing the electrical control box 4 on the side of the total heat exchange core 2 and in the exhaust channel, the airflow in the exhaust channel is used to dissipate heat from the electrical control box 4. On the other hand, the cable can be directly extended to the electrical control box 4 on the side through the wiring above the total heat exchange core 2, thereby shortening the extension length of the cable.

[0300] In one embodiment, a wiring plate 17 is provided in the outer casing 1, and the wiring plate 17 is disposed between the total heat exchange core 2 and the top plate of the outer casing 1;

[0301] The wiring board 17 is provided with a first wiring groove, and the cable of the air valve is arranged in the first wiring groove, which is the first wiring section 171.

[0302] Specifically, in order to facilitate the formation of the first wiring section 171 in the housing 1, a separate wiring plate 17 can be used to form the first wiring section 171. The wiring plate 17 is provided with a first wiring groove for the air valve wiring, so as to restrict and guide the direction of the air valve cable through the first wiring groove. At the same time, the first wiring groove ensures that the air valve cable is independent of the fan 32 cable and does not cross contact.

[0303] During the assembly of the housing 1, the cable guide plate 17 will be placed against the top plate of the housing 1 and can be fixed to the top plate of the housing 1 with screws. The cable guide plate 17 is made of insulating material to improve the safety of cable wiring.

[0304] By setting a wiring plate 17 between the top plate of the total heat exchange core 2 and the outer shell 1, and setting a first wiring groove on the wiring plate 17 to meet the cable wiring requirements of the air valve, the function of the first wiring section 171 is realized.

[0305] In one embodiment, the wiring plate 17 is provided with a second wiring groove, which is arranged at intervals from the first wiring groove, and at least one cable of the fan 32 is disposed in the second wiring groove.

[0306] Specifically, in order to meet the wiring requirements of the fan 32 through the wiring board 17, a second wiring groove can be provided on the wiring board 17. The second wiring groove is isolated from the first wiring groove to achieve the separation of strong and weak current.

[0307] By providing a second wiring groove at an interval from the first wiring groove on the wiring plate 17, the second wiring groove can meet the wiring requirements of the fan 32's cables, thereby realizing the function of the second wiring section 172.

[0308] In one embodiment, wire clips are respectively provided in the first wiring slot and the second wiring slot.

[0309] Specifically, after the cables in the first and second wiring troughs are in place, cable clips can be used on the outside to limit the cables inside the wiring troughs, thereby preventing the cables from coming out of the wiring troughs.

[0310] By installing cable clips in the first and second wiring slots, the cable clips can confine the cables within the wiring slots to prevent them from slipping out, thereby improving the reliability of the wiring.

[0311] In one embodiment, when an insulation frame 6 is provided in the outer shell 1, a wiring trough 69 is also provided on the insulation frame 6 in the second installation area. The wiring trough 69 is arranged between the total heat exchange core 2 and the electrical control box 4; the cable of the air valve is also arranged in the wiring trough 69.

[0312] Specifically, after the air valve cable passes between the top plate of the total heat exchange core 2 and the outer shell 1, it is further guided to extend into the electrical control box 4 through the wiring groove 69 formed on the insulation frame 6.

[0313] By additionally providing a wiring trough 69 on the insulation frame 6, the wiring trough 69 can cooperate with the first wiring section 171 to route the cables of the air valve, thereby making full use of the structure of the insulation frame 6 itself to further meet the wiring requirements of the air valve cables and improve the wiring quality of the cables.

[0314] In one embodiment of this application, as Figures 4-6 As shown, in order to meet the requirements of internal circulation airflow and simplify the structure inside the casing 1 to reduce assembly and manufacturing costs, the following improvements are made to the indoor unit of the air conditioner.

[0315] The air conditioner indoor unit provided in this application includes a housing 1, on which an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13, and an outdoor air inlet 14 are provided.

[0316] The indoor unit of the air conditioner includes a total heat exchange core 2, which is provided with an exhaust heat exchange channel and a fresh air heat exchange channel, and the exhaust heat exchange channel and the fresh air heat exchange channel conduct heat to each other; the indoor return air vent 12, the exhaust heat exchange channel and the outdoor air outlet vent 13 form an exhaust channel in the outer casing 1, and the outdoor air inlet vent 14, the fresh air heat exchange channel and the indoor air outlet vent 11 form a fresh air channel in the outer casing 1.

[0317] The indoor unit of the air conditioner includes a heat exchanger 5, which is configured to exchange heat with the airflow passing through the fresh air duct.

[0318] The indoor unit of the air conditioner includes two fan assemblies 3, each fan assembly 3 including a mounting bracket 31 and a fan 32, the fan 32 being mounted on the mounting bracket 31; one fan assembly 3 is disposed in the fresh air duct, and the other fan assembly 3 is disposed in the exhaust air duct.

[0319] A damper 161 is provided between the total heat exchange core 2 and the outer shell 1. The damper 161 is arranged between the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel. The damper 161 is configured to selectively connect the indoor air outlet 11 and the indoor return air outlet 12.

[0320] Specifically, in order to enable the indoor return air vent 12 and indoor air outlet 11 to be interconnected when the exhaust air duct and fresh air duct are in internal circulation, a damper 161 can be directly added between the inlet of the exhaust air heat exchange channel and the outlet of the fresh air heat exchange channel of the total heat exchange core 2.

[0321] When damper 161 is closed, indoor return air vent 12 and indoor air outlet vent 11 are isolated, thus isolating the exhaust duct and fresh air duct to meet the requirement of independent indoor and outdoor air intake and exhaust. At this time, the dampers of outdoor air inlet 14 and outdoor air outlet 13 are in the open state.

[0322] When internal circulation is required, the damper 161 can be opened. The damper 161 connects the indoor return air vent 12 and the indoor air outlet 11 at the total heat exchange core 2. At this time, the dampers of the outdoor air inlet 14 and the outdoor air outlet 13 are in the closed state.

[0323] By installing a damper 161 between the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel in the total heat exchange core 2, the damper 161 controls the interconnection between the indoor return air vent 12 and the indoor air outlet vent 11. This allows for rapid temperature adjustment when the indoor temperature has not reached the set value, by opening the damper 161 to connect the indoor return air vent 12 and the indoor air outlet vent 11, thereby improving the user experience. Furthermore, since the damper 161 is installed in the total heat exchange core 2 and separates the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel, there is no need to add an additional internal circulation duct, reducing the number of components used and lowering assembly and manufacturing costs.

[0324] In one embodiment, a first partition plate 15 is provided on one side of the outlet of the fresh air heat exchange channel of the total heat exchange core 2, and a second partition plate 16 is provided on the other side of the outlet of the fresh air heat exchange channel of the total heat exchange core 2.

[0325] The first partition 15 and the second partition 16 are configured to separate the exhaust duct and the fresh air duct. The first partition 15 is arranged between the indoor air outlet 11 and the outdoor air outlet 13, and the second partition 16 is also arranged between the indoor return air outlet 12 and the indoor air outlet 11.

[0326] The second partition plate 16 is provided with a communication port, and the damper 161 is disposed in the communication port.

[0327] Specifically, the first partition plate 15 and the second partition plate 16 can meet the installation requirements of installing the total heat exchange core 2 in the outer casing 1 and achieving mutual isolation between the exhaust air channel and the fresh air channel. The damper 161 is installed in the communication port on the second partition plate 16 to facilitate the installation of the damper 161 in the outer casing 1.

[0328] By setting the first partition plate 15 and the second partition plate 16, the exhaust air channel and the fresh air channel are separated at the outlet of the fresh air heat exchange channel by the total heat exchange core 2. At the same time, the connecting port set on the second partition plate 16 can meet the mutual connection between the exhaust air channel and the fresh air channel so that the indoor return air port 12 and the indoor air outlet 11 can be connected to realize internal circulation. The damper 161 is installed at the connecting port to realize the start and stop of internal circulation, which facilitates the installation and fixation of the damper 161.

[0329] like Figures 16-21 As shown, in order to meet the maintenance requirements, the outer casing 1 is provided with a maintenance port 104, and the outer casing 1 is also provided with an inspection door 105 for opening and closing the maintenance port 104.

[0330] When it is necessary to repair or replace the total heat exchange core 2 and the filter screen, the inspection door 105 can be opened and the work can be carried out through the maintenance port 104.

[0331] The outer casing 1 is provided with a first filter 18 and a second filter 19. The first filter 18 is used to filter the air entering the outer casing 1 from the indoor return air vent 12, and the second filter 19 is used to filter the air entering the outer casing 1 from the outdoor air inlet 14.

[0332] In one embodiment of this application, in order to increase the filtration area of ​​the first filter screen 18 and at the same time meet the installation requirements of convenient disassembly and assembly of the first filter screen 18.

[0333] In addition, the length of the first filter screen 18 is greater than the opening size of the maintenance port 104, and the first filter screen 18 is configured to be flexible and deformable in the length direction after being subjected to force.

[0334] Specifically, the total heat exchange core 2 and the first filter screen 18 are arranged at the maintenance port 104. The overall length of the first filter screen 18 is greater than the opening size of the maintenance port 104, so that the filtration area of ​​the first filter screen 18 can be increased without being limited by the size of the maintenance port 104.

[0335] Meanwhile, in order to allow the first filter screen 18 to be installed or removed via the maintenance port 104, the first filter screen 18 is configured to bend and deform in the length direction after being subjected to force. In this way, during the installation or removal of the first filter screen 18, the first filter screen 18 can be installed or removed via the maintenance port 104 by bending the first filter screen 18.

[0336] By extending the first filter screen 18, the filtration area of ​​the first filter screen 18 can be effectively increased, thus improving the filtration coverage. In addition, since the filtration area of ​​the first filter screen 18 is increased, the length of the first filter screen 18 will be greater than the opening size of the maintenance port 104. In order to facilitate the disassembly and replacement of the first filter screen 18, the first filter screen 18 can be bent and deformed along its length. In this way, when disassembling and replacing the first filter screen 18, the first filter screen 18 can be bent to facilitate the disassembly and replacement operation through the maintenance port 104, thus meeting the requirements for convenient disassembly and replacement.

[0337] In one embodiment, the first filter screen 18 is provided with at least one deformable portion 181 along its length direction, the deformable portion 181 being configured to bend and elastically deform when the first filter screen 18 is subjected to force.

[0338] Specifically, in order to meet the bending requirements during the assembly and disassembly of the first filter screen 18, it is also necessary to further ensure that the first filter screen 18 can remain flat after being assembled into the housing 1 to meet the filtration requirements. Therefore, a deformation part 181 is provided on the first filter screen 18.

[0339] During use, when the first filter screen 18 needs to be bent, it will bend and deform at the deformation part 181 under stress. After the first filter screen 18 is installed into the housing 1, it is not subjected to bending pressure, allowing the deformation part 181 to elastically return to its original position. This ensures that the first filter screen 18 remains flat after being assembled to meet the filtration requirements.

[0340] By extending the first filter screen 18, the filtration area of ​​the first filter screen 18 can be effectively increased, thus improving the filtration coverage. In addition, since the filtration area of ​​the first filter screen 18 is increased, the length of the first filter screen 18 will be greater than the opening size of the maintenance port 104. In order to facilitate the disassembly and replacement of the first filter screen 18, the first filter screen 18 can be bent and deformed at the deformation part 181 after being subjected to force. In this way, when disassembling and replacing the first filter screen 18, the first filter screen 18 can be bent to facilitate the disassembly and replacement operation through the maintenance port 104, thus meeting the requirements for convenient disassembly and replacement.

[0341] In one embodiment, the first filter 18 includes a first frame 182 and a first filter (not shown), the first filter being disposed on the first frame 182;

[0342] The first frame 182 has at least one notch structure 183 on its side edge along the length direction; the notch structure 183 is configured such that when the first frame 182 is subjected to force, the first frame 182 bends at the notch structure 183.

[0343] Specifically, in order to meet the requirements of bending deformation, the first frame 182 can be provided with a notch structure 183 on the edge of the first frame 182 along its length. When the first frame 182 is bent under force, the first frame 182 can deform at the notch structure 183 to meet the bending deformation requirements of the first filter screen 18.

[0344] In one embodiment, a structural reinforcement 184 is further provided between the two side frames of the first frame 182 along the length direction;

[0345] The notch structure 183 extends along the width direction of the first frame 182 and is distributed on the structural reinforcement 184.

[0346] Specifically, since the first frame 182 has a relatively long overall length, in order to improve the overall structural strength, structural reinforcement members 184 can be added to the first frame 182 along the width direction. The structural reinforcement members 184 are generally strip-shaped to enhance the structural strength of the first frame 182.

[0347] Meanwhile, the notch structure 183 extends to the structural reinforcement 184, so that the structural reinforcement 184 can also deform when the first filter screen 18 is bent.

[0348] By providing a structural reinforcement 184 along the width direction on the first frame 182, the structural reinforcement 184 can effectively improve the structural strength of the first frame 182. At the same time, the notch structure 183 extends further on the structural reinforcement 184. During the bending process of the first filter screen 18, the first filter screen 18 can be further bent along the notch structure 183 on the structural reinforcement 184 to increase the bending angle of the first filter screen 18 and thus improve the convenience of disassembly and assembly.

[0349] In another embodiment, the first filter 18 includes a plurality of first frames 182, each of which is provided with a first filter; two adjacent first frames 182 are connected together, and the connection portion of two adjacent first frames 182 forms a deformable portion 181.

[0350] Specifically, the first filter screen 18 can adopt a structure of multiple first frames 182, and a deformation part 181 can be formed at the connection between two adjacent first frames 182 to meet the bending deformation requirements of the first filter screen 18.

[0351] Multiple first frames 182 are used to install the first filter screen. When the first filter screen 18 is bent, it can deform at the deformation part 181 formed at the connection between the two first frames 182 to meet the requirements of bending deformation for disassembly and assembly.

[0352] The first frame 182 is an integral structure, and the first frame 182 is integrally injection molded to improve the overall structural strength of the first filter screen 18.

[0353] Alternatively, the multiple first frames 182 can be a separate structure, and the first filter screen 18 further includes a flexible connector. Two adjacent first frames 182 are connected together by the flexible connector, which forms the deformable part 181. The first filter screen 18 adopts a separate first frame 182, and adjacent first frames 182 are assembled together by the flexible connector. In this way, when the first filter screen 18 is bent, elastic deformation can be generated by the flexible connector to meet the requirements of bending and deforming the first filter screen 18 for assembly and disassembly.

[0354] In one embodiment, a damper 161 is further provided between the total heat exchange core 2 and the outer shell 1. The damper 161 is arranged between the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel. The damper 161 is configured to selectively connect the indoor air outlet 11 and the indoor return air outlet 12.

[0355] The damper 161 and the total heat exchange core 2 are arranged on the same side of the first filter screen 18.

[0356] Specifically, by setting the damper 161, the requirements for indoor air recirculation can be met, and the first filter 18 can also filter the air entering the outer casing 1 during the recirculation process.

[0357] In addition, a first partition plate 15 is provided in the outer casing 1. One end of the first partition plate 15 is connected to the total heat exchange core 2, and the first partition plate 15 separates the two fan assemblies.

[0358] The outer casing 1 is also provided with a second partition plate 16, one end of which is connected to the total heat exchange core 2, and the second partition plate 16 separates the indoor air outlet 11 and the indoor air return outlet 12.

[0359] The total heat exchange core 2 separates the outdoor air outlet 13 and the outdoor air inlet 14.

[0360] The second partition plate 16 is provided with a connecting port, and the connecting port is provided with the damper 161. The connecting port is configured to connect the indoor air outlet 11 and the indoor return air outlet 12. The damper 161 is also configured to open and close the connecting port.

[0361] The first filter 18 is also located between the connecting port and the indoor return air vent 12, and the connecting port and the total heat exchange core 2 are arranged on the same side of the first filter 18.

[0362] By setting the first partition plate 15 and the second partition plate 16, the exhaust air channel and the fresh air channel are separated at the outlet of the fresh air heat exchange channel by the total heat exchange core 2. At the same time, the connecting port set on the second partition plate 16 can meet the mutual connection between the exhaust air channel and the fresh air channel so that the indoor return air port 12 and the indoor air outlet 11 can be connected to realize internal circulation. The damper 161 is installed at the connecting port to realize the start and stop of internal circulation, which facilitates the installation and fixation of the damper 161.

[0363] In one embodiment, the outer casing 1 is provided with a first positioning slot and a second positioning slot, the first positioning slot being close to the maintenance port 104 and the second positioning slot being away from the maintenance port 104, and the first positioning slot and the second positioning slot being arranged to extend vertically.

[0364] One end of the first filter 18 is inserted into the first positioning slot, and the other end of the first filter 18 is inserted into the second positioning slot.

[0365] Specifically, the positioning slot provided in the housing 1 can be used to insert the end of the first filter screen 18 to meet the installation requirements of the first filter screen 18.

[0366] For example, the first positioning slot and the second positioning slot can be two first mounting parts formed in the insulation frame.

[0367] By providing vertically opposite positioning slots in the housing 1, the two ends of the first filter screen 18 can be positioned to ensure that the first filter screen 18 is securely and reliably assembled in the housing 1. At the same time, by bending the first filter screen 18, it can be disengaged from the first positioning slot and pulled out from the first maintenance port 104, thereby improving the convenience of disassembly.

[0368] In one embodiment, the outer casing 1 is further provided with a limiting slot 106, which extends laterally, and the first filter screen 18 is engaged in the limiting slot 106.

[0369] Specifically, after the two ends of the first filter screen 18 are positioned by the positioning slots, the first filter screen 18 can also be positioned by the limiting slot 106 in the length direction of the first filter screen 18 to improve the reliability of assembly.

[0370] By providing a laterally extending limiting groove 106 in the housing 1, the limiting groove 106 can further limit the first filter screen 18 in the length direction to ensure that the first filter screen 18 remains in a stable position during use, thereby meeting the requirement that air flows through the first filter screen 18 for filtration.

[0371] In one embodiment, a limiting block 107 is further provided in the outer casing 1, and the first filter screen 18 is arranged between the limiting block 107 and the total heat exchange core 2.

[0372] Specifically, when assembling the first filter screen 18, both ends of the first filter screen 18 are inserted into the corresponding positioning slots and are locked in the limiting slot 106. The limiting block 107 will limit the first filter screen 18 on the outside of the total heat exchange core 2.

[0373] When it is necessary to remove the first filter screen 18, the end of the first filter screen 18 is pulled out from the first positioning slot. During this process, the first filter screen 18 will move away from the limiting block 107, thereby avoiding the limiting block 107 from obstructing the removal process of the first filter screen 18.

[0374] By adding a limiting block 107 to the outer casing 1, the limiting block 107 is arranged on the side of the first filter screen 18 away from the total heat exchange core 2. In this way, during the assembly process, the first filter screen 18 can be limited by the limiting block 107, and during the disassembly process, the operator can pull the first filter screen 18 away from the limiting block 107 to complete the disassembly, thereby improving the convenience of disassembly.

[0375] In another embodiment of this application, such as Figures 16-19 As shown, in order to reduce the size of the maintenance port 104, two mounting plates 108 are also provided in the outer casing 1. The two mounting plates 108 are distributed on both sides of the outdoor air inlet 14. The mounting plates 108 are also provided with limiting support parts 1081. The limiting support parts 1081 are arranged on the outside of the maintenance port 104 and close to the outdoor air inlet 14. The second filter screen 19 is attached to the limiting support part 1081. The second filter screen 19 is located between the total heat exchange core 2 and the limiting support part 1081.

[0376] Specifically, since the second filter 19 needs to filter the outdoor fresh air, it includes at least a high-efficiency filter and may further include a coarse filter if needed. For this reason, the overall thickness of the second filter 19 is relatively thick. By limiting and supporting the second filter 19 through the limiting support part 1081 on the mounting plate 108, the opening size of the maintenance port 104 can be reduced.

[0377] Specifically, during assembly, the second filter screen 19 is inserted into the housing 1 through the maintenance port 104, and then the second filter screen 19 is moved laterally to abut against the limiting support part 1081. At this time, the second filter screen 19 is sandwiched between the top plate and the bottom plate of the housing 1 in the height direction, between the two mounting plates 108 in the left and right direction, and is limited and supported by the limiting support part 1081 in the front and back direction.

[0378] The physical form of the limiting support 1081 can be a plate structure formed by stamping on the mounting plate 108, or a support block or other structure fixed on the mounting plate 108 by means of screws or welding. No restrictions or details are provided here.

[0379] By providing mounting plates 108 on both sides of the outdoor air inlet 14 in the housing 1, the limiting support 1081 provided on the mounting plates 108 can limit and support the second filter 19 to meet the requirement of reliable installation of the second filter 19 in the housing 1. Since the limiting support 1081 is arranged outside the maintenance port 104, the second filter 19 can be inserted into the housing 1 from the maintenance port 104 during installation and then pushed laterally to abut against the limiting support 1081 to complete the assembly. Similarly, during replacement and maintenance, the second filter 19 is pulled laterally away from the limiting support 1081 to be taken out from the maintenance port 104. In this way, it is not necessary to increase the opening range of the maintenance port 104 to expose the second filter 19, thereby reducing the size of the maintenance port 104 to improve the structural strength of the housing 1 while meeting the requirements for disassembly and assembly of the second filter 19.

[0380] In one embodiment, the second filter 19 is sandwiched between the total heat exchange core 2 and the limiting support portion 1081.

[0381] Specifically, after the second filter 19 is installed into the housing 1 and supported by the limiting support part 1081, the total heat exchange core 2 can be installed into the housing 1 through the service port 104. After the total heat exchange core 2 is installed into the housing 1, the second filter 19 can be positioned and supported by the total heat exchange core 2, so that the second filter 19 is sandwiched between the total heat exchange core 2 and the limiting support part 1081.

[0382] The second filter screen 19 is installed and fixed by cooperating with the total heat exchange core 2 and the limiting support part 1081, so as to improve the installation reliability of the second filter screen 19.

[0383] In one embodiment, the mounting plate 108 is further provided with a detachable clamping component 109, and the second filter screen 19 is clamped between the clamping component 109 and the limiting support portion 1081.

[0384] Specifically, the mounting plate 108 is provided with a detachable clamping component 109, which can be assembled onto the mounting plate 108 by means of screws or clips.

[0385] During assembly, after the second filter screen 19 is installed into the housing 1 and supported by the limiting support part 1081, the clamping part 109 can be assembled onto the mounting plate 108 to press the second filter screen 19 onto the limiting support part 1081. Then, the total heat exchange core 2 is installed into the housing 1 through the service port 104.

[0386] By adding a clamping component 109 to the mounting plate 108, the clamping component 109 cooperates with the limiting support part 1081 to install and fix the position of the second filter screen 19, thereby improving the installation reliability of the second filter screen 19.

[0387] In one embodiment, the surface of the clamping member 109 facing away from the second filter screen 19 forms a guide surface, which is configured to guide the total heat exchange core 2 from the access port into the housing 1, and the guide surface also abuts against the total heat exchange core 2.

[0388] Specifically, for precise assembly of the total heat exchange core 2, the guide surface formed by the clamping component 109 can be further used to guide the total heat exchange core 2. During the process of the total heat exchange core 2 being installed into the housing 1 through the service port 104, the total heat exchange core 2 will be against the guide surface, and the guide surface will guide it to improve the accuracy and convenience of assembly.

[0389] By forming a guide surface on the clamping member 109, when the total heat exchange core 2 is installed into the housing 1, the total heat exchange core 2 can be precisely assembled into the housing 1 by means of the guide surface, thereby improving the ease of assembly.

[0390] In one embodiment, the clamping member 109 includes a second fixing part 1091 and a clamping part 1092, the second fixing part 1091 and the clamping part 1092 are connected together, the second fixing part 1091 is detachably disposed on the mounting plate 108, and the guide surface is formed on the clamping part 1092;

[0391] The mounting plate 108 is provided with a clearance groove 1082, the second fixing part 1091 is located in the clearance groove 1082, and the pressing part 1092 extends to the outside of the clearance groove 1082.

[0392] Specifically, since the clamping component 109 is installed on the mounting plate 108 before the total heat exchange core 2 is installed, in order to avoid interference between the clamping component 109 and the total heat exchange core 2 during the assembly, a clearance groove 1082 can be provided on the mounting plate 108, so that the second fixing part 1091 of the clamping component 109 is located in the clearance groove 1082.

[0393] Since the second fixing part 1091 is located in the relief groove 1082, the second fixing part 1091 will not protrude beyond the surface of the mounting plate 108. In this way, during the installation of the total heat exchange core 2, the total heat exchange core 2 is prevented from being stuck due to the second fixing part 1091 protruding from the surface of the mounting plate 108.

[0394] By providing a clearance groove 1082 on the mounting plate 108, the second fixing part 1091 of the clamping member 109 is installed in the clearance groove 1082. In this way, when assembling the total heat exchange core 2, the second fixing part 1091 of the clamping member 109 on the mounting plate 108 will not protrude from the surface of the mounting plate 108 and thus will not hinder the installation of the total heat exchange core 2, which is more conducive to improving the smoothness of assembly.

[0395] In some embodiments, the physical entities representing the second fixing part 1091 and the pressing part 1092 can adopt a plate-like structure, that is, the pressing part 109 can be a bent plate-like structure, so as to meet the requirements of not allowing the installation of the total heat exchange core 2 while also pressing the second filter screen 19.

[0396] In some embodiments, the mounting plate 108 can be fixedly mounted on the second mounting part of the insulation frame.

[0397] In one embodiment, the second filter screen 19 is provided with a pull part 191.

[0398] Specifically, during the disassembly of the second filter screen 19, the second filter screen 19 can be pulled out laterally with the help of the pulling part 191.

[0399] By adding a pull part 191 to the second filter screen 19, the pull part 191 can be a structure such as a pull rope or a pull strap, so that when disassembling the second filter screen 19, the second filter screen 19 can be pulled out of the outer casing 1 by the pull part 191, so as to facilitate the operator to disassemble it.

[0400] 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.

[0401] The above are merely specific embodiments of this utility model, but the protection scope of this utility model 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 this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The outer casing is provided with an indoor air outlet, an indoor return air outlet, an outdoor air outlet, and an outdoor air inlet. A fresh air channel is formed between the indoor air outlet and the outdoor air inlet, and an exhaust air channel is formed between the indoor return air outlet and the outdoor air outlet. A total heat exchange core is disposed in the outer casing and is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust duct. Two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct; A first filter screen is disposed in the outer casing and is located between the total heat exchange core and the indoor return air vent. The outer casing is also provided with a maintenance port, which is equipped with an openable inspection door. The total heat exchange core and the first filter screen are arranged at the maintenance port. In addition, the length of the first filter screen is greater than the opening size of the maintenance port, and the first filter screen is configured to be flexible and deformable in the length direction when subjected to force.

2. An indoor unit for an air conditioner, characterized in that, include: The outer casing is provided with an indoor air outlet, an indoor return air outlet, an outdoor air outlet, and an outdoor air inlet. A fresh air channel is formed between the indoor air outlet and the outdoor air inlet, and an exhaust air channel is formed between the indoor return air outlet and the outdoor air outlet. A total heat exchange core is disposed in the outer casing and is configured to perform heat exchange treatment on the airflow flowing through the fresh air duct and the airflow flowing through the exhaust duct. Two fan assemblies, one of which is disposed in the fresh air duct and the other of which is disposed in the exhaust air duct; A first filter screen is disposed in the outer casing and is located between the total heat exchange core and the indoor return air vent. The outer casing is also provided with a maintenance port, which is equipped with an openable inspection door. The total heat exchange core and the first filter screen are arranged at the maintenance port. In addition, the length of the first filter screen is greater than the opening size of the maintenance port, and the first filter screen is provided with at least one deformable part along its length direction. The deformable part is configured to be able to bend and elastically deform after the first filter screen is subjected to force.

3. The indoor unit of the air conditioner according to claim 1 or 2, characterized in that, The first filter screen includes a first frame and a first filter screen, wherein the first filter screen is disposed on the first frame; The first frame has at least one notch structure on its border along its length; the notch structure is configured such that when the first frame is subjected to force, the first frame bends at the notch structure.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, A structural reinforcement is also provided between the two side frames of the first frame along its length; The notch structure also extends along the width direction of the first frame and is distributed on the structural reinforcement.

5. The indoor unit of the air conditioner according to claim 1 or 2, characterized in that, The first filter screen includes a plurality of first frames, and each first frame is provided with a first filter screen; Two adjacent first frames are connected together, and the connection portion of the two adjacent first frames forms a deformable part.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The multiple first frames are a single integrated structure; Alternatively, the first frames may be a separate structure, and the first filter screen may also include a flexible connector, with two adjacent first frames connected together by the flexible connector, which forms the deformable part.

7. The indoor unit of the air conditioner according to claim 1 or 2, characterized in that, A damper is also provided between the total heat exchange core and the outer shell. The damper is arranged between the inlet of the exhaust heat exchange channel and the outlet of the fresh air heat exchange channel of the total heat exchange core. The damper is configured to selectively connect the indoor air outlet and the indoor return air outlet. The damper and the total heat exchange core are arranged on the same side of the first filter screen.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The housing is also provided with a first partition plate, one end of which is connected to the total heat exchange core, and the first partition plate separates the two fan assemblies. The outer casing is also provided with a second partition plate, one end of which is connected to the total heat exchange core, and the second partition plate separates the indoor air outlet and the indoor air return outlet. The total heat exchange core separates the outdoor air outlet and the outdoor air inlet; The second partition plate is provided with a connecting port, and the connecting port is provided with the damper. The connecting port is configured to connect the indoor air outlet and the indoor air return outlet. The damper is also configured to open and close the connecting port. The first filter screen is also located between the connecting port and the indoor return air vent, and the connecting port and the total heat exchange core are arranged on the same side of the first filter screen.

9. The indoor unit of the air conditioner according to claim 1 or 2, characterized in that, The housing is provided with a first positioning slot and a second positioning slot. The first positioning slot is close to the maintenance port, and the second positioning slot is far from the maintenance port. The first positioning slot and the second positioning slot are arranged to extend vertically. One end of the first filter screen is inserted into the first positioning slot, and the other end of the first filter screen is inserted into the second positioning slot.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The outer casing is also provided with a limiting slot, which extends laterally, and the first filter screen is clipped in the limiting slot. And / or, the housing is further provided with a limiting block, and the first filter screen is arranged between the limiting block and the total heat exchange core.

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