Indoor unit and heating, ventilation and air conditioning device

Abstract

Disclosed in the present application are an indoor unit and a heating, ventilation and air conditioning device. The indoor unit comprises a main panel support, a circuit board assembly and a separated support, the main panel support having an installation space. The circuit board assembly is arranged in the installation space, and the circuit board assembly comprises a circuit board and a circuit component, the circuit component being arranged on the circuit board. The separated support is erected on the main panel support, the separated support and the circuit component being successively arranged one above the other. The separated support comprises at least one first wire fastener configured to limit the wiring direction of an electrical power wire and at least one second wire fastener configured to limit the wiring direction of a low-voltage wire, the first wire fastener and the second wire fastener being spaced apart from each other, the electrical power wire being configured to connect the circuit board assembly and an electrical power component, and the low-voltage wire being configured to connect the circuit board assembly and a low-voltage component.

Description

Indoor unit and HVAC equipment

[0001] This application claims priority to the Chinese patent application with application number 202420586682.8, entitled “Electric control box, air conditioner indoor unit and HVAC equipment”, filed with the China Patent Office on March 25, 2024, and application number 202420586636.8, entitled “Indoor unit and HVAC equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of HVAC technology, and in particular to an indoor unit and HVAC equipment using the indoor unit. Background Art

[0003] In air conditioners, the indoor unit's electrical control box requires extensive wiring. Conventional technology often creates a messy routing of both weak and strong wires within the box, which can easily lead to electromagnetic compatibility issues. To address this, the control box is typically separated by left and right partitions, with strong and weak wires entering from different sides. This results in the wire harnesses routing long distances within the indoor unit. Summary of the Invention

[0004] The main purpose of this application is to provide an indoor unit and HVAC equipment that are configured to achieve separate layout of strong wires and weak wires.

[0005] To achieve the above-mentioned objectives, the present application proposes an indoor unit, comprising a mainboard bracket, a circuit board assembly, and a separation bracket, wherein the mainboard bracket has an installation space; the circuit board assembly is arranged in the installation space, and the circuit board assembly includes a circuit board and circuit components, and the circuit components are arranged on the circuit board; the separation bracket is mounted on the mainboard bracket, and the separation bracket is arranged in sequence with the circuit components in the upper and lower directions, and the separation bracket has at least one first wire clamping body configured to limit the routing direction of the strong wires and at least one second wire clamping body configured to limit the routing direction of the weak wires, the first wire clamping body and the second wire clamping body being arranged in sequence, the strong wires being configured to connect the circuit board assembly and the strong wire components, and the weak wires being configured to connect the circuit board assembly and the weak wire components. By mounting the separation bracket, the circuit components are avoided, and the first wire clamping body and the second wire clamping body are separated to achieve separate routing of the strong wires and the weak wires.

[0006] As an optional embodiment, the indoor unit provided in the present application also includes a shell, an electrical control cover and a functional module. The mainboard bracket is connected to the shell, and an installation cavity is formed in the shell. The circuit board assembly, high-voltage components and low-voltage components are all located in the installation cavity; the electrical control cover is located in the installation cavity and is connected to the shell. The electrical control cover and the shell are combined to form a accommodating cavity for accommodating the circuit board assembly, and a wire hole is provided on the electrical control cover. The mainboard bracket and the separation bracket are arranged in the accommodating cavity and fixedly connected to the electrical control cover; the functional module is arranged on the electrical control cover, and the functional module is electrically connected to the circuit board assembly through a wiring harness passing through the wire hole.

[0007] As an optional embodiment, the shell includes a panel and a casing, the bottom of the casing is open, and the panel cover is arranged at the opening to enclose the panel to form an installation cavity; the panel has a return air inlet and an air outlet connected to the installation cavity, and the return air inlet and the air outlet are arranged at intervals; wherein, the electric control cover is exposed by either the return air inlet or the air outlet.

[0008] As an optional embodiment, the casing includes a chassis and multiple side panels arranged around the chassis; the chassis and the panel are arranged opposite to each other, and the bottom surface of the chassis forms the top wall of the installation cavity, and the inner panel surface forms the side wall of the installation cavity; the electrical control cover is connected to the chassis or the side panel.

[0009] As an optional embodiment, the electric control cover includes a cover body and multiple enclosures, the cover body is connected to one of the multiple side panels, one end of the enclosure is connected to the cover body, and the other end of the enclosure extends toward the chassis; the accommodating cavity has a cavity top wall, a cavity bottom wall and multiple cavity side walls arranged between the cavity top wall and the cavity bottom wall; the cavity top wall is formed by the chassis, the cavity bottom wall is formed by the cover body, and the multiple cavity side walls are formed by multiple enclosures and side panels connected to the cover body; wherein, a functional module is provided on the outside of the cover body, and a wire passing hole is provided on the enclosure.

[0010] In an optional embodiment, the cover body includes a covering portion and a first connecting portion, with the enclosure panel connected to the covering portion. In the width direction of the electrical control cover, a first end of the first connecting portion is connected to the covering portion, and a second end of the first connecting portion extends toward the side panel to connect to the side panel. The first end of the first connecting portion is located above the second end of the first connecting portion. When the first end of the first connecting portion is located above the second end of the first connecting portion, this indicates that the extension direction of the first connecting portion is at an angle with both the horizontal and vertical directions, i.e., the first connecting portion extends in an oblique direction. Consequently, when the first connecting portion is connected to the side panel via a fastener, the axial direction of the fastener is perpendicular to the extension direction of the first connecting portion, i.e., the axial direction of the fastener is also at an angle with both the horizontal and vertical directions. This prevents the axial direction of the fastener from being aligned with the horizontal direction. Furthermore, when an operator connects the electrical control cover to the side panel, their hands can more easily manipulate and apply force to third-party tools, thereby improving the efficiency of assembly and disassembly between the electrical control cover and the housing.

[0011] As an optional embodiment, the cover portion includes a first cover body and a second cover body; the first cover body is located between the enclosure and the second cover body, the second cover body is located between the first cover body and the first connecting portion, and the second cover body is connected to the first end of the first connecting portion; wherein one end of the first cover body is connected to the second cover body, and the other end of the first cover body extends upward and connects to the enclosure. In this way, the connection between the cover portion and the enclosure is not a right angle, but forms an oblique angle. Such an arrangement can, to a certain extent, avoid the airflow entering from the return air port, and to a certain extent avoid the influence of the setting of the electric control cover on the air intake, thereby improving the performance of the indoor unit provided by the present application.

[0012] As an optional embodiment, the multiple enclosures include two first enclosures and one second enclosure; the two first enclosures are arranged opposite to each other along a first direction, and the second enclosure and the side panel connected to the cover body are arranged opposite to each other along a second direction, and there is an angle between the second direction and the first direction; wherein, each first enclosure is provided with a wire hole.

[0013] As an optional embodiment, there are two functional modules, and at least one of the two functional modules is electrically connected to the circuit board assembly through a wiring harness passing through a wire hole on a first enclosure provided near the functional module.

[0014] As an optional embodiment, the two functional modules are a sterilization module and a communication adapter module, and the sterilization module and the communication adapter module are arranged at intervals along the first direction; the sterilization module and the communication adapter module are both electrically connected to the circuit board assembly through a wiring harness passing through a wire hole on a first enclosure panel near them.

[0015] As an optional implementation, the functional module is detachably connected to the cover body.

[0016] As an optional implementation, the functional module is detachably connected to the cover body via a first fastener.

[0017] As an optional implementation, two opposite sides of the functional module are detachably connected to the electric control cover via a second fastener and a clamping structure.

[0018] As an optional embodiment, the clamping structure includes a first clamping portion and a second clamping portion; the first clamping portion is arranged on one of the functional module and the electrical control cover, and the second clamping portion is arranged on the other of the functional module and the electrical control cover; a first clamping hole is formed on one of the first clamping portion and the second clamping portion for the other to be clamped into, so as to clamp the functional module and the electrical control cover together.

[0019] As an optional embodiment, each first enclosure is provided with a plurality of wire holes, and the plurality of wire holes located on the same first enclosure include at least one high-voltage wire hole and one low-voltage wire hole.

[0020] As an optional embodiment, the multiple wire holes located on the same first enclosure further include user wiring wire holes.

[0021] As an optional embodiment, the cover body includes a covering portion and a first connecting portion, and the enclosure is connected to the covering portion; the first end of the first connecting portion is connected to the covering portion, the second end of the first connecting portion extends toward the side panel, and the first end of the first connecting portion is located above the second end of the first connecting portion; a second connecting portion protruding from the side panel surface is provided on the side of the side panel facing the second enclosure, and the second connecting portion is connected to the first connecting portion by a third fastener; wherein the bottom surface of the second connecting portion is an inclined surface in contact with the first connecting portion, and the bottom end of the inclined surface is connected to the panel surface of the side panel, and the top end of the inclined surface extends toward the second enclosure.

[0022] As an optional embodiment, a plurality of second connection portions arranged at intervals are provided on the side panel.

[0023] As an optional implementation, a flange structure folded toward the outside of the electric control cover is formed on the hole wall of the wire-passing hole.

[0024] As an optional embodiment, the indoor unit provided in the present application also includes a separation bracket, which is connected to the main board bracket and is located below the circuit board assembly; a positioning structure is provided between the separation bracket and the electrical control cover, and the positioning structure is provided to limit the relative position between the separation bracket and the electrical control cover.

[0025] As an optional embodiment, the positioning structure includes a positioning protrusion, which is provided on one of the separation bracket and the electric control cover; a positioning hole is provided on the other of the separation bracket and the electric control cover, and the positioning protrusion extends into the positioning hole.

[0026] As an optional implementation, there are multiple positioning protrusions, the multiple positioning protrusions are distributed at intervals, and one positioning protrusion corresponds to one positioning hole.

[0027] As an optional implementation, the return air port and the electric control cover are arranged to face each other in the up and down directions.

[0028] As an optional implementation, there are multiple return air vents; the areas occupied by the multiple return air vents on the panel cover the projection area of ​​the electric control cover on the panel.

[0029] As an optional embodiment, the separation bracket includes a first plate, a second plate, and a connecting plate. The first plate and the second plate have a height difference in the vertical direction. The connecting plate connects the first plate and the second plate. The first plate is provided with at least one first wire clamp or at least one second wire clamp, and the second plate is provided with at least one first wire clamp and / or at least one second wire clamp. By providing the first and second plates with a height difference, circuit components of different heights can be avoided and the isolation of strong and weak wires can be facilitated.

[0030] As an optional embodiment, the electric control cover includes a first cover body that is tilted toward the mainboard bracket. The first cover body is positioned adjacent to the indoor unit's heat exchanger and out of the way of the heat exchanger. Vertically, the first or second plate closer to the mainboard bracket is positioned above the first cover body. The first cover body does not interfere with the indoor unit's air duct.

[0031] As an optional embodiment, the electrical control cover also includes a second cover body connected to the first cover body. In the vertical direction, the first or second plate, whichever is farther from the mainboard bracket, is parallel to and located above the second cover body. This arrangement allows the shape of the separation bracket to match that of the electrical control cover.

[0032] As an optional embodiment, the electrical control cover includes a fixedly connected cover portion and two first panels. The two first panels are arranged opposite each other. At least one bundle of power lines and at least one bundle of power lines pass through the first panels and enter the storage cavity. The electrical control cover can effectively protect the components within the storage cavity.

[0033] As an optional embodiment, the first enclosure has multiple wire holes, and the strong wires and weak wires are passed through different wire holes. By passing the strong wires and weak wires through different wire holes, the strong wires and weak wires are isolated from each other.

[0034] As an optional embodiment, the splitter bracket has at least one first fastener, and the mainboard bracket has at least one second fastener, with the first fastener being snap-connected to its corresponding second fastener. The first and second fasteners can be snap-connected in the vertical direction. Applying vertical force to the splitter bracket simplifies the assembly process, allowing the splitter bracket and mainboard bracket to be docked and secured.

[0035] As an optional embodiment, the first wire-holding body includes a first elastic arm extending in a cantilevered manner, the first elastic arm being configured to elastically press against the high-voltage wire, and the second wire-holding body includes two second elastic arms extending in a cantilevered manner, the two second elastic arms being arranged opposite each other, the free ends of the two second elastic arms forming a wire-holding opening for elastically clamping the low-voltage wire. The first wire-holding body with a single elastic arm is used to limit the high-voltage wire, while the second wire-holding body with two elastic arms is used to limit the low-voltage wire.

[0036] As an optional embodiment, the indoor unit provided in this application also includes a wire cover, which is located adjacent to the electrical control cover and covers the power and power lines. By providing the wire cover, the wire harness can be effectively concealed, thereby visually achieving a wireless appearance.

[0037] As an optional embodiment, the indoor unit provided herein also includes a water tray, which is fixed inside the housing. The high-voltage components include a motor, and the low-voltage components include a sensor and a water pump. The water tray is located below the motor, sensor, water pump, and electrical control cover in the direction of gravity. The water tray conceals the high-voltage and low-voltage components and wiring harnesses, visually achieving a wireless appearance.

[0038] The present application also provides a HVAC device, including the above-mentioned indoor unit.

[0039] Based on the indoor unit and HVAC equipment of the embodiment of the present application, a separation bracket is set up so that the separation bracket can avoid circuit components, thereby facilitating wiring on the separation bracket; by setting a first wire clamping body that can limit the routing direction of the strong wire and the second wire clamping body that can limit the routing direction of the weak wire, the strong wire and the weak wire are arranged separately, so that the strong wire and the weak wire can enter from one side of the electric control cover, effectively reducing the detour distance of the wire harness, thereby facilitating the design of the overall layout of the wire harness in the indoor unit and HVAC system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a schematic structural diagram of a first partial structure of an indoor unit provided in an embodiment of the present application;

[0041] FIG2 is a schematic structural diagram of a second partial structure of an indoor unit provided in an embodiment of the present application;

[0042] FIG3 is a schematic diagram of the planar structure of FIG2 from another perspective;

[0043] FIG4 is a schematic structural diagram of the assembly of a separate bracket and a mainboard bracket in an indoor unit provided by an embodiment of the present application;

[0044] FIG5 is a schematic structural diagram of a third partial structure of an indoor unit provided in an embodiment of the present application;

[0045] FIG6 is a schematic diagram of the three-dimensional structure of a separation bracket in an indoor unit provided in an embodiment of the present application;

[0046] FIG7 is a schematic diagram of the planar structure of FIG6 from another perspective;

[0047] FIG8 is a schematic diagram of the three-dimensional structure of the mainboard bracket in the indoor unit provided in an embodiment of the present application;

[0048] FIG9 is a schematic diagram of the planar structure of FIG8 from another perspective;

[0049] FIG10 is a schematic structural diagram of a partial structure of FIG1 ;

[0050] FIG11 is a schematic structural diagram of FIG10 along direction A;

[0051] FIG12 is a schematic structural diagram of a fourth partial structure of an indoor unit provided in an embodiment of the present application;

[0052] FIG13 is a schematic diagram of the three-dimensional structure of the electric control cover in the indoor unit provided in an embodiment of the present application;

[0053] FIG14 is a schematic diagram of the three-dimensional structure of FIG13 from another perspective;

[0054] FIG15 is a schematic diagram of the three-dimensional structure of the communication adapter module in the indoor unit provided in an embodiment of the present application;

[0055] FIG16 is a schematic perspective view of a fifth partial structure of an indoor unit provided in an embodiment of the present application;

[0056] FIG17 is an enlarged schematic diagram of the local structure at point B in FIG16;

[0057] FIG18 is an exploded view of FIG17 ;

[0058] FIG19 is a schematic structural diagram of a sixth partial structure of an indoor unit provided in an embodiment of the present application;

[0059] FIG20 is a cross-sectional view taken along the CC direction of FIG19;

[0060] FIG21 is an enlarged schematic diagram of the local structure at D in FIG20;

[0061] FIG22 is an enlarged schematic diagram of the local structure at point E in FIG20 ;

[0062] FIG23 is a cross-sectional view along FF in FIG19;

[0063] FIG24 is an enlarged schematic diagram of the local structure at G in FIG23;

[0064] FIG25 is an enlarged schematic diagram of the local structure at point H in FIG11;

[0065] FIG26 is a schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application in an installed state;

[0066] FIG27 is a cross-sectional view of the indoor unit provided in an embodiment of the present application in an installed state;

[0067] FIG28 is an enlarged schematic diagram of the local structure at point I in FIG12;

[0068] Figure 29 is a schematic diagram of the three-dimensional structure of the wire pressing cover in the indoor unit provided in an embodiment of the present application.

[0069] Explanation of the accompanying figures: 1. Housing; 2. Circuit board assembly; 3. Electric control cover; 4. Accommodating cavity; 5. Functional module; 6. First fastener; 7. Clamping structure; 8. Flanging structure; 9. Mainboard bracket; 11. Housing; 12. Mounting cavity; 21. Circuit board; 31. Wire hole; 32. Cover body; 33. Enclosure; 51. Sterilization module; 52. Communication adapter module; 53, first fastener; 54, first plate; 55, second plate; 56, connecting plate; 57, first side; 59, first card line body; 71, first clamping portion; 72, second clamping portion; 73, first clamping hole; 91, first connecting slot; 92, second plug-in portion; 93, first clamp; 94, second clamp; 95, third clamping portion; 96, second fastener; 97, main board bracket body; 98, second side; 10, separation bracket; 20, positioning structure; 50, separation bracket body; 60, installation space; 70, circuit component; 90, strong wire; 111, chassis; 112, side panel; 113, second connecting portion; 114, seventh connecting hole; 115, first plug-in portion; 211, card slot; 311, Strong current wire hole; 312, weak current wire hole; 313, user wiring wire hole; 321, third connection hole; 322, cover; 323, first connection part; 324, extension; 331, first enclosure; 332, second enclosure; 511, first connection hole; 521, second connection hole; 911, sixth connection hole; 951, second clamping hole; 101, third buckle; 201, positioning protrusion; 202, positioning hole; 591, first elastic arm; 592, arch; 5 10. Second clamping body; 531. Buckle protrusion; 100. Weak-current wire; 203. First clamping hole; 204. Second clamping hole; 300. Strong-current component; 301. Motor; 302. Electric auxiliary heating module; 400. Weak-current component; 401. Pipe temperature sensor; 402. Room temperature sensor; 403. Water pump; 500. Wire pressing cover; 501. Wire pressing space; 502. Fourth buckle; 503. Fifth buckle; 600. Water collecting tray; 700. Auxiliary water collecting tray; 701. Wire trough; 1131. Fifth connecting hole; 3221. First covering body; 3222. Second covering body; 3231. Fourth connecting hole; 331a. First enclosure; 331b. First enclosure; 5101. Second elastic arm; 5102. Wire-clamping opening. DETAILED DESCRIPTION

[0070] This application proposes an indoor unit and HVAC equipment. It should be noted that the indoor unit provided in this embodiment includes but is not limited to a ceiling unit.

[0071] Furthermore, HVAC equipment includes but is not limited to air conditioners, multi-split units, heat pumps, water heaters, swimming pool units and other equipment. Taking HVAC equipment in which the heating medium is refrigerant and the heating object is water as an example, the HVAC equipment may include an indoor unit located indoors and configured to heat water, and an air conditioner outdoor unit that may be located outdoors and perform heat exchange with the external environment. The indoor unit may include a water circulation path and a refrigerant pipe, wherein a refrigerant flows through the refrigerant pipe. The refrigerant is preferably a new type of flammable refrigerant such as R32 or R290, which has the advantages of high thermal conductivity, large latent heat of evaporation, good fluidity, and low delivery pressure. The indoor unit heats the water by exchanging heat between the refrigerant in the refrigerant pipe and the water in the water circulation path, thereby outputting water at a set temperature.

[0072] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0073] Please refer to Figure 1, which is a schematic diagram of a first partial structure of an indoor unit provided in an embodiment of the present application. As shown in the figure, this embodiment provides an indoor unit comprising a housing 1, which comprises a panel (not shown) and a casing 11. The casing 11 has an open bottom, and a panel cover is disposed over the open bottom to enclose the panel and form an installation cavity 12. The panel has a return air inlet and an air outlet connected to the installation cavity 12, and the return air inlet and the air outlet are spaced apart.

[0074] Specifically, the housing 11 includes a chassis 111 and multiple side panels 112 surrounding the chassis 111; the chassis 111 is arranged opposite to the panel, and the bottom surface of the chassis 111 forms the top wall of the installation cavity 12, and the inner panel surface of the side panel 112 forms the side wall of the installation cavity 12.

[0075] Further, referring to Figures 2 to 4 , Figure 2 is a schematic diagram of a second partial structure of the indoor unit provided in an embodiment of the present application, Figure 3 is a schematic diagram of the planar structure of Figure 2 from another perspective, and Figure 4 is a schematic diagram of the structure of the assembly of the separation bracket and the mainboard bracket in the indoor unit provided in an embodiment of the present application. The indoor unit provided in this embodiment also includes a mainboard bracket 9, a circuit board assembly 2, a circuit component 70, and a separation bracket 10.

[0076] Specifically, the motherboard bracket 9 has an installation space 60, and the circuit board assembly 2 is fixedly mounted in the installation space 60. The circuit board assembly 2 includes a circuit board 21 and a circuit component 70. The circuit component 70 is fixedly mounted on the circuit board 21, and the circuit component 70 can be an integrated circuit chip, an electronic component, etc. The circuit component 70 has a height in the vertical direction, and different circuit components 70 can have different heights. The separation bracket 10 is mounted on the motherboard bracket 9. In the vertical direction, the separation bracket 10 and the circuit component 70 have a height difference and are arranged at a certain distance from each other. The separation bracket 10 is arranged to avoid each circuit component 70. The separation bracket 10 includes at least one first clamping wire body 59 and at least one second clamping wire body 510.

[0077] It should be noted that the above-mentioned up and down directions are consistent with the up and down directions in FIG. 2 .

[0078] Please refer to Figure 5, which is a schematic diagram of the third partial structure of the indoor unit provided in an embodiment of the present application. Among them, the first clamping wire body 59 can limit the routing direction of the strong wire 90, which can connect the circuit board assembly 2 and the strong current component 300, and the second clamping wire body 510 can limit the routing direction of the weak wire 100, which can connect the circuit board assembly 2 and the weak current component 400. The first clamping wire body 59 and the second clamping wire body 510 are arranged separately from each other.

[0079] The separation bracket 10 is mounted on the mainboard bracket 9. The separation bracket 10 and the mainboard bracket 9 can be integrally formed. The separation bracket 10 and the mainboard bracket 9 can also be independently set and fixedly connected. They can be detachably fixedly connected by means of threaded connection, strapping connection or snap connection, or can be non-detachably fixedly connected by means of bonding or welding. The separation bracket 10 can be set horizontally or tilted at an angle to the horizontal plane. The separation bracket 10 can be located above the mainboard bracket 9, the circuit board assembly 2 and the circuit component 70. The separation bracket 10 can also be located below the mainboard bracket 9, the circuit board assembly 2 and the circuit component 70. The separation bracket 10 can also be set vertically or tilted at an angle to the direction of gravity. The separation bracket 10 can be located on the left or right side of the mainboard bracket 9.

[0080] There can be only one first wire-binding body 59, which forms a wire-binding groove of a certain length. The direction in which the wire-binding groove extends is the routing direction of the power line 90, and the power line 90 can be embedded in the wire-binding groove. There can also be multiple first wire-binding bodies 59 arranged at intervals, and all of the first wire-binding bodies 59 together define the routing direction of the power line 90. There can also be only one second wire-binding body 510, which forms a wire-binding groove of a certain length. The direction in which the wire-binding groove extends is the routing direction of the weak line 100, and the weak line 100 can be embedded in the wire-binding groove. There can also be multiple second wire-binding bodies 510 arranged at intervals, and all of the second wire-binding bodies 510 together define the routing direction of the weak line 100. The first wire-binding body 59 and the second wire-binding body 510 are separated from each other, so that the routing directions of the power line 90 and the weak line 100 do not intersect with each other, thereby preventing the power line 90 and the weak line 100 from crossing each other to a certain extent.

[0081] In the illustrated embodiment, a separation bracket 10 is set on the mainboard bracket 9, and the separation bracket 10 is spaced apart from the circuit component 70, so that the circuit component 70 can be avoided; by setting a first card line body 59 and a second card line body 510 separated from each other, separate wiring of the strong wire 90 and the weak wire 100 is achieved.

[0082] Continuing with Figures 6 to 9, Figure 6 is a schematic diagram of the three-dimensional structure of a separation bracket in an indoor unit provided in an embodiment of the present application. Figure 7 is a schematic diagram of the planar structure of Figure 6 from another perspective. Figure 8 is a schematic diagram of the three-dimensional structure of a mainboard bracket in an indoor unit provided in an embodiment of the present application. Figure 9 is a schematic diagram of the planar structure of Figure 8 from another perspective. In some embodiments, the separation bracket 10 and the mainboard bracket 9 are abutted and secured in a vertically aligned manner. The side of the separation bracket 10 facing the mainboard bracket 9 is provided with at least one first latch 53 disposed in a vertical direction. The side of the mainboard bracket 9 facing the separation bracket 10 is provided with at least one second latch 96 disposed in a vertical direction. The first latch 53 and the second latch 96 correspond to each other in a one-to-one relationship. During assembly, the separation bracket 10 is placed above and aligned with the mainboard bracket 9. The separation bracket 10 is then pressed downward in the vertical direction. When the first latch 53 and its corresponding second latch 96 are locked and secured, the separation bracket 10 and the mainboard bracket 9 are fixedly connected.

[0083] In the illustrated embodiment, the separation bracket 10 may include a separation bracket body 50, wherein two first side edges 57 of the separation bracket body 50, which are arranged opposite to each other in the second direction, each extend downwardly in a cantilevered manner to form a plate-shaped first latch 53, and the free end of the first latch 53 has a latch protrusion 531. The second direction may be perpendicular to the up-down direction. The mainboard bracket 9 is located below the separation bracket 10 and includes a mainboard bracket body 97, wherein two second side edges 98 of the mainboard bracket body 97, which are arranged opposite to each other in the second direction, each extend upwardly in a cantilevered manner to form a plate-shaped second latch 96, and the free end of the second latch 96 has a through-grooved slot 211. During assembly, the latch protrusion 531 passes through the corresponding slot 211 and latches onto the groove edge of the slot 211, thereby achieving a latch fixation between the separation bracket 10 and the mainboard bracket 9.

[0084] Since the separation bracket 10 and the mainboard bracket 9 are docked in the up and down directions, and the first fastener 53 and the second fastener 96 are arranged in the up and down directions, applying force to the separation bracket 10 in the up and down directions can simultaneously achieve docking and fixation of the two, thereby simplifying the assembly process of the separation bracket 10 and the mainboard bracket 9.

[0085] In some embodiments, the first wire clamping body 59 includes a first elastic arm 591 extending in a cantilevered manner, and the first elastic arm 591 is configured to be elastically pressed against the power line 90. The second wire clamping body 510 includes two second elastic arms 5101 extending in a cantilevered manner, and the two second elastic arms 5101 are arranged opposite each other. The free ends of the two second elastic arms 5101 form a wire clamping opening 5102 for elastically clamping the weak wire 100. When routing, the strong wire 90 is laid below the first elastic arm 591 and is pressed and fixed by the first elastic arm 591; the weak wire 100 squeezes into the space between the two second elastic arms 5101 from the wire clamping opening 5102 or is directly passed through the space between the two second elastic arms 5101.

[0086] The first elastic arm 591 extends upward in a cantilevered manner from the upper surface of the separation bracket body 50 in the vertical direction. The free end of the first elastic arm 591 has an arch 592 that is bent toward the upper surface of the separation bracket body 50. The distance between the arch 592 and the upper surface of the separation bracket body 50 can be slightly smaller than the diameter of the power line 90, so that the arch 592 can elastically press against the power line 90. The second elastic arm 5101 extends upward in a cantilevered manner from the upper surface of the separation bracket body 50 in the vertical direction. A wire-holding opening 5102 is formed between the free ends of the two second elastic arms 5101. In normal operation, the wire-holding opening 5102 can be closed, that is, the free ends of the two second elastic arms 5101 are abutted together; or, alternatively, there is a certain distance between the free ends of the two second elastic arms 5101.

[0087] During assembly, the weak wire 100 can be squeezed into the wire clamping opening 5102, and the two second elastic arms 5101 are relatively opened outward until the weak wire 100 enters between the two second elastic arms 5101. The width of the wire clamping opening 5102 can be smaller than the diameter of the weak wire 100, thereby preventing the weak wire 100 from being separated from the second wire clamping body 510 to a certain extent.

[0088] In this embodiment, the first clamping wire body 59 with a single elastic arm is provided to restrict the strong wire 90, and the second clamping wire body 510 with a double elastic arm is provided to restrict the weak wire 100. In some alternative structures, the first clamping wire body 59 can also be a single elastic arm structure, and the second clamping wire body 510 can be a double elastic arm structure.

[0089] In some embodiments, the separation bracket 10 includes a first plate 54, a second plate 55, and a connecting plate 56. In the vertical direction, the first plate 54 and the second plate 55 have a height difference, and the connecting plate 56 is located between the first plate 54 and the second plate 55 and can connect the first plate 54 and the second plate 55. The first plate 54 can be provided with only the first clamping wire body 59, or only the second clamping wire body 510, or both the first clamping wire body 59 and the second clamping wire body 510. The second plate 55 can be provided with only the first clamping wire body 59, or only the second clamping wire body 510, or both the first clamping wire body 59 and the second clamping wire body 510.

[0090] In the illustrated embodiment, the first plate 54 and the second plate 55 can be arranged horizontally, and the connecting plate 56 can be perpendicular to the first plate 54 and the second plate 55. The first plate 54 can be provided with multiple first clamping wire bodies 59, and the high-voltage wire 90 is connected to the circuit board assembly 2 after passing through each first clamping wire body 59. The first plate 54 and the second plate 55 can each be provided with one or more second clamping wire bodies 510, and the low-voltage wire 100 is connected to the circuit board assembly 2 after passing through the first clamping wire body 59 and the second clamping wire body 510 in sequence.

[0091] By providing the first plate 54 and the second plate 55 with a height difference, the separation bracket 10 can avoid circuit components 70 of different heights. In some alternative structures, depending on the height of the circuit component 70, the separation bracket 10 can be designed as a flat plate, a curved surface, or designed to include multiple plates with height differences.

[0092] Please refer to Figures 10 to 12. Figure 10 is a structural schematic diagram of the partial structure of Figure 1, Figure 11 is a structural schematic diagram of Figure 10 along direction A, and Figure 12 is a structural schematic diagram of the fourth partial structure of the indoor unit provided in an embodiment of the present application. Generally, in order to realize the functions of the indoor unit, such as cooling or heating, it is necessary to set an electric control module inside the installation cavity 12. In order to realize the reduction of parts of the electric control module, the box body of the electric control box can be removed. That is, the circuit board assembly 2 and the electric control cover 3 are both located in the installation cavity 12, the electric control cover 3 is connected to the shell 1, and the electric control cover 3 and the shell 1 enclose a receiving cavity 4 for accommodating the circuit board assembly 2. Specifically, the electric control cover 3 and the mainboard bracket 9 enclose a receiving cavity 4, and the mainboard bracket 9 is connected to the chassis 111. In this way, the box body of the electric control module can be removed, simplifying the manufacturing process of the electric control module.

[0093] The electric control cover 3 can be connected to either the chassis 111 or the side panels 112. The connection between the electric control cover 3 and the chassis 111 or the connection between the electric control cover 3 and the side panels 112 can be detachable, for example, using screws or other threaded fasteners. The following description will detail the connection between the electric control cover 3 and the housing 1.

[0094] In the accommodating cavity 4 , the routing direction of the power line 90 is defined by the first clamping body 59 , and the routing direction of the weak line 100 is defined by the second clamping body 510 , thereby achieving separate routing of the power line 90 and the weak line 100 .

[0095] When the electric control cover 3 is merely configured to form the wall of the accommodating chamber 4, that is, the electric control cover 3 only serves to protect the circuit board assembly 2, the function of the electric control cover 3 itself is relatively simple. Therefore, in this embodiment, the indoor unit further includes a functional module 5, which is disposed on the electric control cover 3. The electric control cover 3 has a wire hole 31 defined therein. The functional module 5 is electrically connected to the circuit board assembly 2 via a wiring harness passing through the wire hole 31. Thus, by providing the functional module 5 on the electric control cover 3, the functions of the functional module 5 can be integrated into the electric control cover 3, thereby improving the performance of the electric control cover 3 in this embodiment.

[0096] The mainboard bracket 9 and the separation bracket 10 are both located within the housing chamber 4, and the electrical control cover 3, the mainboard bracket 9, and the separation bracket 10 are fixedly connected. The power lines 90 and the weak lines 100 can pass through the corresponding wire holes 31 and enter the housing chamber 4 to connect to the circuit board assembly 2.

[0097] Please refer to Figures 13 and 14. Figure 13 is a schematic diagram of the three-dimensional structure of the electric control cover in the indoor unit provided in an embodiment of the present application, and Figure 14 is a schematic diagram of the three-dimensional structure of Figure 13 from another perspective. In some specific embodiments, the electric control cover 3 includes a cover body 32 and a plurality of enclosures 33. The cover body 32 is connected to one of the plurality of side panels 112, and the cover body 32 is located below the bottom plate 111. One end of the enclosure 33 is connected to the cover body 32, and the other end of the enclosure 33 extends toward the bottom plate 111. The accommodating cavity 4 has a cavity top wall, a cavity bottom wall, and a plurality of cavity side walls arranged between the cavity top wall and the cavity bottom wall. The cavity top wall is formed by the bottom plate 111, the cavity bottom wall is formed by the cover body 32, and the plurality of cavity side walls are formed by the plurality of enclosures 33 and the side panels 112 connected to the cover body 32. The functional module 5 is provided on the outside of the cover body 32, and the enclosure 33 is provided with a wire hole 31.

[0098] With such an arrangement, the structure of the side panel 112 of the casing 11 can be utilized to form the side wall of the accommodating cavity 4, thereby reducing the number of steps in the manufacturing process of the electric control cover 3. In addition, the functional module 5 is arranged on the outside of the cover body 32, which can avoid, to a certain extent, the influence of the arrangement of the functional module 5 on other circuit components 70 in the accommodating cavity 4, and can make full use of the space in the installation cavity 12 and outside the accommodating cavity 4.

[0099] Since the side walls of the accommodating cavity 4 are formed by multiple panels 33 and a side panel 112, the multiple panels 33 include two first panels 331 and a second panel 332; the two first panels 331 are arranged relative to each other along a first direction. In this embodiment, the first direction is consistent with the length direction of the electric control cover 3; the second panel 332 and the side panel 112 connected to the cover body 32 are arranged relative to each other along a second direction, and there is an angle between the second direction and the first direction. In this embodiment, the second direction is consistent with the width direction of the electric control cover 3; wherein, each first panel 331 is provided with a wire hole 31.

[0100] The first direction is consistent with the xx-axis direction in FIG. 1 , FIG. 13 and FIG. 14 , and the second direction is consistent with the yy-axis direction in FIG. 1 , FIG. 10 , FIG. 13 and FIG. 14 .

[0101] The two first panels 331 are designated as first panel 331a and first panel 331b. This means that both panels have wire holes 31. If the functional module 5 is located on the side closest to the first panel 331a, it can be electrically connected to the circuit board assembly 2 via a wire harness passing through the wire holes 31 on the first panel 331a. If the functional module 5 is located on the side closest to the first panel 331b, it can be electrically connected to the circuit board assembly 2 via a wire harness passing through the wire holes 31 on the first panel 331b. This shortens the path of the wire harness connected to the functional module 5, preventing the excessive length of the wire harness from affecting the layout of other components within the indoor unit.

[0102] Specifically, there are two functional modules 5 , and at least one of the two functional modules 5 is electrically connected to the circuit board assembly 2 via a wiring harness passing through a wire hole 31 on a first enclosure 331 disposed adjacent to the functional module 5 .

[0103] The two functional modules 5 may include a first functional module and a second functional module:

[0104] If the first functional module is electrically connected to the circuit board assembly 2 and the first functional module is disposed close to the first enclosure 331a, the first functional module is electrically connected to the circuit board assembly 2 via a wiring harness passing through the wire hole 31 disposed on the first enclosure 331a;

[0105] If the first functional module is electrically connected to the circuit board assembly 2 and the first functional module is disposed close to the first enclosure 331b, the first functional module is electrically connected to the circuit board assembly 2 via a wiring harness passing through the wire hole 31 disposed on the first enclosure 331b;

[0106] If the second functional module is electrically connected to the circuit board assembly 2 and the second functional module is disposed close to the first enclosure 331a, the second functional module is electrically connected to the circuit board assembly 2 via a wiring harness passing through the wire hole 31 disposed on the first enclosure 331a;

[0107] If the second functional module is electrically connected to the circuit board assembly 2 and the second functional module is arranged close to the first enclosure 331b, the second functional module is electrically connected to the circuit board assembly 2 through the wiring harness passing through the wire hole 31 on the first enclosure 331b.

[0108] By providing the separation bracket 10 having the first wire clamping body 59 and the second wire clamping body 510 , the weak wire 100 and the strong wire 90 passing through the first enclosure 331 a can be routed separately in the accommodating cavity 4 .

[0109] In some optional embodiments, the above-mentioned first functional module and second functional module can be a sterilization module 51 and a communication adapter module 52, wherein the sterilization module 51 is a positive and negative ion sterilization module, and the communication adapter module 52 can be understood as a module with other functions added according to user requirements. No specific restrictions are made here.

[0110] Exemplarily, the sterilization module 51 and the communication adapter module 52 are arranged at intervals along the first direction; the sterilization module 51 and the communication adapter module 52 are both electrically connected to the circuit board assembly 2 through a wiring harness passing through a wire hole 31 on a first enclosure 331 arranged near them.

[0111] The sterilization module 51 may be adjacent to the first enclosure 331a, and the communication adapter module 52 may be adjacent to the first enclosure 331b. Thus, the sterilization module 51 is electrically connected to the circuit board assembly 2 via a wiring harness passing through the wire holes 31 on the first enclosure 331a, while the communication adapter module 52 is electrically connected to the circuit board assembly 2 via a wiring harness passing through the wire holes 31 on the first enclosure 331b. This not only shortens the wiring harnesses connecting the sterilization module 51 and the communication adapter module 52, but also avoids interference between the wiring harnesses connecting the sterilization module 51 and the communication adapter module 52 to a certain extent, thereby facilitating the integration of the sterilization module 51 and the communication adapter module 52 on the electrical control cover 3.

[0112] To facilitate installation of the functional module 5 on the electrical control cover 3 and improve installation efficiency, the functional module 5 is detachably connected to the electrical control cover 3. In this embodiment, the sterilization module 51 is detachably connected to the electrical control cover 3, specifically, the sterilization module 51 is detachably connected to the cover body 32; and the communication adapter module 52 is detachably connected to the electrical control cover 3, specifically, the communication adapter module 52 is detachably connected to the cover body 32.

[0113] As shown in FIG1 , the sterilization module 51 has first connection holes 511 formed on opposite sides along a first direction. The sterilization module 51 can be detachably connected to the cover body 32 via first fasteners 6 that penetrate through the first connection holes 511 and the cover body 32. The first fasteners 6 can be threaded fasteners such as screws, and the specific type of the first fasteners 6 is not limited herein.

[0114] It should be noted that the high-voltage component 300 may include a motor 301. The motor 301 drives the wind wheel via its motor shaft, which in turn drives air flow. The air passes through the evaporator, exchanging heat and thus reducing the temperature. The motor 301 is connected to the circuit board assembly 2 via a high-voltage wire 90. The high-voltage wire 90 passes through the high-voltage wire hole 311 in the first enclosure 331a and enters the accommodating chamber 4. The wiring direction is determined by the first wire clamp 59 of the separation bracket 10.

[0115] Furthermore, the weak current component 400 may include a sensor and a water pump 403. The sensor includes a pipe temperature sensor 401 and a room temperature sensor 402. There may be multiple pipe temperature sensors 401, which can be configured to detect the temperature of different positions of the evaporator (condenser). Each room temperature sensor 402 is connected to the circuit board assembly 2 through its corresponding weak current wire 100. The weak current wire 100 passes through the strong current wire hole 311 located on the first enclosure 331a and enters the accommodating cavity 4. The wiring direction is limited by the second clamping body 510 of the separation bracket 10. The room temperature sensor 402 is provided at a predetermined position inside the casing 11 and is configured to detect the temperature of the indoor environment. The room temperature sensor 402 is connected to the circuit board assembly 2 through the weak current wire 100. The weak current wire 100 passes through the strong current wire hole 311 of the first enclosure 331a and enters the accommodating cavity 4. The wiring direction is limited by the second clamping body 510 of the separation bracket 10. The water pump 403 is configured to pump the condensed water of the indoor unit to the outside of the housing 11. The water pump 403 is connected to the circuit board assembly 2 through a weak-current wire 100. The weak-current wire 100 passes through the strong-current wire hole 311 of the first enclosure 331a and enters the accommodating chamber 4. The wiring direction is limited by the second clamping body 510 of the separation bracket 10. The weak-current wire 100 connecting the weak-current component 400 and the strong-current wire 90 connecting the strong-current component 300 can enter the accommodating chamber 4 from different strong-current wire holes 311. For example, the strong-current wire 90 enters the accommodating chamber 4 from the strong-current wire hole 311 located in the upper half of the first enclosure 331a, while the weak-current wire 100 enters the accommodating chamber 4 from the strong-current wire hole 311 located in the lower half of the first enclosure 331a.

[0116] The high-voltage component 300 may also include an electric auxiliary heating module 302, which typically uses electric heating to provide auxiliary heating. The electric auxiliary heating module 302 is located outside the accommodating cavity 4 and fixed above the electrical control cover 3. It is connected to the circuit board assembly 2 via a high-voltage power line 90, which passes through the low-voltage power line hole 312 in the first enclosure 331b before entering the accommodating cavity 4.

[0117] Please refer to Figure 15, which is a schematic diagram of the three-dimensional structure of the communication adapter module in the indoor unit provided in an embodiment of the present application. The communication adapter module 52 is detachably connected to the cover body 32 on opposite sides along the first direction through a second fastener (not shown in the figure) and a snap-on structure 7. In this way, not only can the connection convenience between the communication adapter module 52 and the electric control cover 3 be improved, but also the connection reliability between the communication adapter module 52 and the electric control cover 3 can be improved. Among them, the second fastener can also be a threaded fastener such as a screw, and here, there is no restriction on the type of fastener.

[0118] A second connection hole 521 can be opened on the communication adapter module 52, and a third connection hole 321 opposite to the second connection hole 521 can be opened on the cover body 32. The second fastener can pass through the second connection hole 521 and the third connection hole 321 to connect one side of the communication adapter module 52 with the electric control cover 3.

[0119] Furthermore, the clamping structure 7 may include a first clamping portion 71 and a second clamping portion 72; the first clamping portion 71 is arranged on one of the communication adapter module 52 and the electric control cover 3, and the second clamping portion 72 is arranged on the other of the communication adapter module 52 and the electric control cover 3; a first clamping hole 73 is formed on one of the first clamping portion 71 and the second clamping portion 72 for the other to be clamped into, so as to clamp the communication adapter module 52 and the electric control cover 3 together.

[0120] In a specific implementation of this embodiment, the first clamping portion 71 is provided on the electric control cover 3 , the second clamping portion 72 is provided on the communication adapter module 52 , and the first clamping portion 71 has a first clamping hole 73 for the second clamping portion 72 to be inserted into.

[0121] The first engaging portion 71 can be formed on the bottom of the cover body 32 by stamping or other methods, and the second engaging portion 72 can be formed on the top of the communication adapter module 52 by stamping or other methods. Specifically, a rectangular protrusion can be first stamped on the top of the communication adapter module 52, and then the three side edges of the protrusion can be trimmed off by cutting to form the second engaging portion 72. The forming methods of the first engaging portion 71 and the second engaging portion 72 are not specifically limited.

[0122] It should be noted that, in this embodiment, the direction in which the second engaging portion 72 is engaged with the first engaging hole 73 is consistent with the first direction.

[0123] To enhance the routing flexibility of the wiring harness connected to the circuit board assembly 2, each first enclosure 331 is provided with a plurality of wire holes 31. That is, the first enclosure 331a and the first enclosure 331b are both provided with a plurality of wire holes 31. The plurality of wire holes 31 are spaced apart along the second direction. The plurality of wire holes 31 on the same first enclosure 331 include at least one high-voltage wire hole 311 and one low-voltage wire hole 312. Specifically, the wire holes 31 on the first enclosure 331a include at least one high-voltage wire hole 311 and one low-voltage wire hole 312. In this way, the high-current component 300 can enter through the high-current wire hole 311, and the low-current component 400 can enter through the low-current wire hole 312, avoiding interference between the two wiring harnesses. The wiring harness connected to the sterilization module 51 and the communication adapter module 52 in this embodiment can be electrically connected to the circuit board assembly 2 through the high-current wire hole 311 or the low-current wire hole 312 according to the actual power and current of the two modules.

[0124] In some specific embodiments, the sterilization module 51 is connected to the circuit board assembly 2 via a weak-current wire 100, which passes through the weak-current wire hole 312 and enters the accommodating cavity 4. The communication adapter module 52 is connected to the circuit board assembly 2 via a weak-current wire 100, which passes through the wire hole in the cover 322 and enters the accommodating cavity 4. The strong-current wire 90 and the weak-current wire 100 can enter the accommodating cavity 4 through different wire holes 31.

[0125] In a specific implementation of this embodiment, a high-voltage wire hole 311 and a low-voltage wire hole 312 are provided on the first enclosure 331a, wherein the high-voltage wire hole 311 is located on a side away from the side panel 112 connected to the electric control cover 3, and the low-voltage wire hole 312 is formed between the first enclosure 331a and the side panel 112, that is, part of the side wall of the low-voltage wire hole 312 is formed by the side panel 112.

[0126] Furthermore, a high-voltage wire hole 311 and a low-voltage wire hole 312 are provided on the first enclosure 331b, wherein the low-voltage wire hole 312 is located on the side away from the side panel 112 connected to the electric control cover 3, and the high-voltage wire hole 311 is formed between the first enclosure 331b and the side panel 112, that is, part of the side wall of the high-voltage wire hole 311 is formed by the side panel 112.

[0127] Generally, the wiring harness connected to the circuit board assembly 2 also includes user wiring such as power cords. Therefore, in some optional embodiments, the multiple wire holes 31 located on the same first enclosure 331 also include user wiring wire holes 313, that is, user wiring wire holes 313 are provided on the first enclosure 331a and the first enclosure 331b.

[0128] Moreover, the user wiring hole 313 on the first enclosure 331a is located between the strong current hole 311 and the weak current hole 312, and the user wiring hole 313 on the first enclosure 331b is located between the strong current hole 311 and the weak current hole 312.

[0129] It is understandable that when the wiring harness passes through the wire hole 31, the hole wall of the wire hole 31 may cause damage to the wiring harness, such as cutting. Therefore, as an optional embodiment, a flange structure 8 is formed on the hole wall of the wire hole 31, which is folded toward the outside of the electric control cover 3. In this way, the provision of the flange structure 8 can improve the smoothness of the hole wall of the wire hole 31, thereby preventing the hole wall of the wire hole 31 from damaging the wiring harness to a certain extent.

[0130] It should be noted that a flange structure 8 is formed on each wire hole 31 located on the first enclosure 331a and the first enclosure 331b.

[0131] Please refer to Figures 16 and 17. Figure 16 is a schematic three-dimensional diagram of a fifth partial structure of the indoor unit according to an embodiment of the present application, and Figure 17 is an enlarged schematic diagram of the partial structure at point B in Figure 16. The cover body 32 includes a covering portion 322 and a first connecting portion 323. The enclosure 33 is connected to the covering portion 322. In the width direction of the electric control cover 3, the first end of the first connecting portion 323 is connected to the covering portion 322, and the second end of the first connecting portion 323 extends toward the side panel 112, with the first end of the first connecting portion 323 located above the second end of the first connecting portion 323.

[0132] A second connecting portion 113 is provided on the side of the side panel 112 facing the second enclosure 332, and the second connecting portion 113 protrudes from the plate surface of the side panel 112. The second connecting portion 113 is connected to the first connecting portion 323 by a third fastener; wherein, the bottom surface of the second connecting portion 113 is an inclined surface in contact with the first connecting portion 323, and the bottom end of the inclined surface is connected to the plate surface of the side panel 112, and the top end of the inclined surface extends toward the second enclosure 332.

[0133] In this way, by providing the first connecting portion 323 on the electric control cover 3 and the second connecting portion 113 on the housing 11, a detachable connection between the electric control cover 3 and the housing 11 can be achieved. Moreover, by providing the first connecting portion 323 extending obliquely and the inclined bottom surface of the second connecting portion 113 in contact with the first connecting portion 323, the operator can operate more easily when connecting the electric control cover 3 to the housing 11.

[0134] It should be noted that the third fastener can be a threaded fastener such as a screw. Specifically, the first connecting portion 323 can have a fourth connecting hole 3231. The second connecting portion 113 has a fifth connecting hole 1131 opposite to the fourth connecting hole 3231. The third fastener can pass through the fourth connecting hole 3231 and the fifth connecting hole 1131 to connect the first connecting portion 323 to the second connecting portion 113.

[0135] It is not difficult to understand that when the electric control cover 3 is arranged opposite to the return air outlet in the upper and lower directions, the airflow entering through the return air outlet may have a certain impact on the flow of gas due to the presence of the electric control module. Therefore, in order to avoid affecting the flow of gas to a certain extent, in some embodiments, the structure of the electric control cover 3 can be improved to avoid the occurrence of this phenomenon.

[0136] Specifically, the cover portion 322 includes a first cover body 3221 and a second cover body 3222. The first cover body 3221 is located between the enclosure 33 and the second cover body 3222, and the second cover body 3222 is located between the first cover body 3221 and the first connecting portion 323. The second cover body 3222 is connected to the first end of the first connecting portion 323. One end of the first cover body 3221 is connected to the second cover body 3222, and the other end of the first cover body 3221 extends upward and connects to the enclosure 33. The enclosure 33 is the second enclosure 332.

[0137] Thus, the connection between the cover portion 322 and the enclosure 33, that is, the connection between the cover portion 322 and the second enclosure 332, is not a right angle, but rather forms an oblique angle. This arrangement can, to a certain extent, avoid the airflow entering from the return air vent, thereby preventing the electric control cover 3 from affecting the air intake, thereby improving the performance of the indoor unit provided by this embodiment.

[0138] In order to improve the connection reliability between the electric control cover 3 and the housing 11, a plurality of second connection parts 113 arranged at intervals can be provided on the side plate 112. In this way, the connection reliability between the electric control cover 3 and the housing 11 can be improved.

[0139] Specifically, the plurality of second connection parts 113 are spaced apart along the first direction. When there are a plurality of second connection parts 113 , there should also be a plurality of fourth connection holes 3231 on the first connection part 323 , with one second connection part 113 corresponding to one fourth connection hole 3231 .

[0140] To enhance the structural strength of the electrical control cover 3, in some optional embodiments, the cover body 32 further includes an extension portion 324 connected to the second end of the first connection portion 323. The extension portion 324 extends downward along the surface of the side panel 112 and contacts the side panel 112. Providing the extension portion 324 on the first connection portion 323 enhances the structural strength of the electrical control cover 3 and, to a certain extent, prevents the electrical control cover 3 from breaking at the connection point when it is connected to the housing 11.

[0141] Please refer to Figures 17 to 19. Figure 18 is an exploded view of Figure 17, and Figure 19 is a schematic structural diagram of the sixth partial structure of the indoor unit provided in an embodiment of the present application. As shown in Figures 17 to 19, the mainboard bracket 9 and the chassis 111 can be connected by threaded fasteners and a snap-fit ​​connection. Specifically, the mainboard bracket 9 forms a first connecting groove 91 that is recessed toward the top on opposite sides along the first direction. A sixth connecting hole 911 is formed on the bottom of the first connecting groove 91. A seventh connecting hole 114 is formed on the chassis 111. The seventh connecting hole 114 is opposite to the sixth connecting hole 911. Threaded fasteners such as screws can pass through the sixth connecting hole 911 and the seventh connecting hole 114 in sequence to connect the mainboard bracket 9 and the chassis 111 together.

[0142] In order to connect the mainboard bracket 9 and the chassis 111 together, a first plug-in portion 115 protruding toward the bottom and having a plug-in hole can be provided on the chassis 111. A second plug-in portion 92 is provided at one end of the mainboard bracket 9 close to the first enclosure 331b. The second plug-in portion 92 is inserted into the first plug-in portion 115 through the plug-in hole and is plug-in connected to the first plug-in portion 115.

[0143] Referring to Figures 20 to 22, Figure 20 is a cross-sectional view taken along the CC direction of Figure 19, Figure 21 is an enlarged schematic diagram of the partial structure at point D in Figure 20, and Figure 22 is an enlarged schematic diagram of the partial structure at point E in Figure 20. The circuit board assembly 2 includes a circuit board 21 and electrical components disposed on the circuit board 21. The circuit board 21 engages with the mainboard bracket 9 to connect the circuit board assembly 2 to the mainboard bracket 9.

[0144] In some optional embodiments, a first clip 93 and a second clip 94 are respectively provided on opposite sides of the mainboard bracket 9 along the second direction, and the first clip 93 and the second clip 94 are both stopped at the lower end of the circuit board 21 to snap-connect the circuit board 21 to the mainboard bracket 9.

[0145] It should be noted that, in order to improve the connection reliability between the circuit board assembly 2 and the mainboard bracket 9, a plurality of first clips 93 and second clips 94 can be provided and arranged at intervals along the first direction.

[0146] Generally, in order to organize the wire bundles on the circuit board assembly 2, a structure such as a wire management rack is usually provided. In the indoor unit provided in this embodiment, a separate bracket 10 is also included. The separate bracket 10 is connected to the main board bracket 9 and is located below the circuit board assembly 2. Specifically, as shown in Figures 23 and 24, Figure 23 is a cross-sectional view along the FF line of Figure 19, and Figure 24 is an enlarged schematic diagram of the partial structure at G in Figure 23. In order to achieve the connection between the separate bracket 10 and the main board bracket 9, a third clamping portion 95 is provided on one side of the main board bracket 9 along the width direction. The separate bracket 10 is provided with a third clamping buckle 101. The third clamping portion 95 has a second clamping hole 951 for the third clamping buckle 101 to pass through. The axial direction of the second clamping hole 951 is consistent with the up-down direction. The third clamping portion 95 is stopped at the bottom of the third clamping buckle 101.

[0147] It should be noted that, in order to improve the connection reliability between the separation bracket 10 and the mainboard bracket 9, the third clamping portion 95 and the third buckle 101 can be provided in plurality and arranged at intervals along the first direction.

[0148] In the specific implementation of this embodiment, there are two third clamping portions 95, and correspondingly, there are also two third buckles 101. Here, there is no limitation on the number of the third clamping portions 95 and the third buckles 101.

[0149] In order to improve the installation stability of the electric control cover 3 , in some optional embodiments, a positioning structure 20 may be provided between the separation bracket 10 and the electric control cover 3 , and the positioning structure 20 is configured to define the relative position between the separation bracket 10 and the electric control cover 3 .

[0150] Specifically, please refer to Figure 25, which is an enlarged schematic diagram of the partial structure at point H in Figure 11. The positioning structure 20 includes a positioning protrusion 201, which is provided on one of the separation bracket 10 and the electric control cover 3; a positioning hole 202 is provided on the other of the separation bracket 10 and the electric control cover 3, and the positioning protrusion 201 extends into the positioning hole 202. Specifically, the separation bracket 10 is provided with a positioning protrusion 201 on the other side along the second direction, and the positioning protrusion 201 protrudes along the second direction. The covering portion 322 of the electric control cover 3 is provided with a positioning hole 202, and the positioning hole 202 corresponds to the positioning protrusion 201. In this way, the provision of the positioning structure 20 can not only improve the installation stability of the electric control cover 3, but also improve the installation efficiency of the electric control cover 3.

[0151] Furthermore, to enhance the positioning reliability of the positioning structure 20, multiple positioning protrusions 201 are provided, with the multiple positioning protrusions 201 spaced apart, and each positioning protrusion 201 corresponds to one positioning hole 202. In the specific implementation of this embodiment, there are two positioning protrusions 201 and two positioning holes 202, spaced apart along the first direction. The number of positioning protrusions 201 and positioning holes 202 is not limited.

[0152] In some embodiments, in order to improve the heat dissipation performance of the electric control module, the electric control cover 3 is exposed by either the return air vent or the air outlet. In a specific embodiment of this embodiment, the return air vent and the electric control cover 3 are arranged opposite each other in the vertical direction.

[0153] There can be multiple return air vents, and the areas occupied by the multiple return air vents on the panel cover the projected area of ​​the electric control cover 3 on the panel. In this way, it is easy to dissipate heat from the electric control module and improve the performance of the indoor unit provided by this embodiment.

[0154] Continuing with Figures 26 and 27, Figure 26 is a schematic diagram of the three-dimensional structure of the indoor unit provided in the embodiment of the present application in the installed state, and Figure 27 is a cross-sectional view of the indoor unit provided in the embodiment of the present application in the installed state. In the installed state, in the vertical direction, the first plate 54 and the second plate 55 of the separation bracket 10, whichever is closer to the main board bracket 9, are located above the first cover body 3221, and the first plate 54 and the second plate 55, whichever is farther from the main board bracket 9, can be located above the second cover body 3222. In this way, the shape of the separation bracket 10 can match the shape of the electric control cover 3.

[0155] Please continue to refer to Figures 12, 28 and 29. Figure 28 is an enlarged schematic diagram of the local structure at I in Figure 12, and Figure 29 is a three-dimensional structural schematic diagram of the wire pressing cover in the indoor unit provided in an embodiment of the present application. In some embodiments, in order to achieve a hidden design of the wire harnesses such as the strong wires 90 and the weak wires 100, the indoor unit also includes a wire pressing cover 500, which is fixed inside the casing 11 and is arranged adjacent to the first enclosure 331a. The wire pressing cover 500 forms a wire pressing space 501, and the strong wires 90 and the weak wires 100 pass through the wire pressing space 501 and then enter the accommodating chamber 4 through the strong wire hole 311 of the first enclosure 331a. The wire harness entering the first enclosure 331a is shielded by the wire pressing cover 500, which visually achieves a wireless appearance.

[0156] Furthermore, the wire cover 500 is further provided with a fourth snap 502 and a fifth snap 503. The side panel 112 is provided with a first snap hole 203, and the chassis 111 is provided with a second snap hole 204. The fourth snap 502 is snap-connected to the first snap hole 203, and the fifth snap 503 is snap-connected to the second snap hole 204, thereby achieving a fixed connection between the wire cover 500 and the housing 11. Since the side panel 112 and the chassis 111 are arranged at an angle, the snap connection between the wire cover 500 and the housing 11 can be achieved in two directions, thereby improving the reliability of the connection between the two.

[0157] In some embodiments, the indoor unit further includes an auxiliary water receiving tray 700 and a water receiving tray 600. The auxiliary water receiving tray 700 and the water receiving tray 600 are configured to receive condensed water condensed on the heat exchanger. A wire groove 701 is provided on the side of the auxiliary water receiving tray 700 close to the pipe temperature sensor 401. A plurality of weak wires 100 connecting each pipe temperature sensor 401 pass through the wire groove 701 and then enter the accommodating chamber 4. The water receiving tray 600 is fixedly connected to the side panel 112 and the bottom plate 111. In the up and down direction, the water receiving tray 600 can be located below the motor 301, the sensor, the water pump 403 and the electric control cover 3. After assembly, the wire harness is covered by the water receiving tray 600 with a larger area, thereby realizing a hidden design of the wire harness and visually achieving a wireless appearance.

[0158] This embodiment further provides a heating and ventilation device, comprising the indoor unit in the above embodiment, wherein the indoor unit has been described in detail in the above embodiment and will not be described in detail here.

[0159] It should be noted that the HVAC equipment provided in this embodiment should also include other components or modules such as an outdoor unit. Here, other components or modules in the HVAC equipment provided in this embodiment will not be introduced one by one.

Claims

1. An indoor unit, wherein: include: Mainboard bracket with installation space; A circuit board assembly is provided in the installation space, wherein the circuit board assembly includes a circuit board and circuit components, and the circuit components are provided on the circuit board; and, A separation bracket is mounted on the mainboard bracket, and the separation bracket is arranged in sequence with the circuit components in the upper and lower directions. The separation bracket has at least one first card body for limiting the routing direction of the strong electric wire and at least one second card body for limiting the routing direction of the weak electric wire. The first card body and the second card body are arranged separately. The strong electric wire is arranged to connect the circuit board assembly and the strong electric component, and the weak electric wire is arranged to connect the circuit board assembly and the weak electric component.

2. The indoor unit according to claim 1, wherein: Also includes A housing, the mainboard bracket is connected to the housing, a mounting cavity is formed in the housing, and the circuit board assembly, the strong current components and the weak current components are all located in the mounting cavity; An electric control cover is located in the mounting cavity and connected to the housing. The electric control cover and the housing enclose a cavity for accommodating the circuit board assembly. A wire hole is provided on the electric control cover. The mainboard bracket and the separation bracket are arranged in the cavity and fixedly connected to the electric control cover. as well as A functional module is provided on the electric control cover and is electrically connected to the circuit board assembly via a wiring harness passing through the wire hole.

3. The indoor unit according to claim 2, wherein: The housing comprises a panel and a casing, the bottom of the casing is open, and the panel cover is arranged at the open position to enclose the panel and form the installation cavity; The panel is provided with an air return port and an air outlet communicating with the installation cavity, and the air return port and the air outlet are spaced apart; Wherein, the electric control cover is exposed from any one of the return air port and the air outlet.

4. The indoor unit according to claim 3, wherein: The housing includes a chassis and a plurality of side panels arranged around the chassis; The chassis is arranged opposite to the panel, and the bottom surface of the chassis forms the top wall of the installation cavity, and the inner surface of the side panel forms the side wall of the installation cavity; The electric control cover is connected to the chassis or the side panel.

5. The indoor unit according to claim 4, wherein: The electric control cover includes a cover body and a plurality of enclosures, wherein the cover body is connected to one of the plurality of side panels, one end of the enclosure is connected to the cover body, and the other end of the enclosure extends toward the chassis; The accommodating cavity comprises a cavity top wall, a cavity bottom wall and a plurality of cavity side walls arranged between the cavity top wall and the cavity bottom wall; The cavity top wall is formed by the bottom plate, the cavity bottom wall is formed by the cover body, and the plurality of cavity side walls are formed by the plurality of enclosure plates and side plates connected to the cover body; Wherein, the functional module is provided on the outer side of the cover body, and the wire hole is opened on the enclosure.

6. The indoor unit according to claim 5, wherein: The cover body includes a covering portion and a first connecting portion, and the enclosure is connected to the covering portion; In the width direction of the electric control cover, the first end of the first connecting portion is connected to the covering portion, and the second end of the first connecting portion extends toward the side plate to be connected to the side plate; The first end of the first connecting portion is located above the second end of the first connecting portion.

7. The indoor unit according to claim 6, wherein: The covering portion includes a first covering body and a second covering body; The first covering body is located between the enclosure and the second covering body, the second covering body is located between the first covering body and the first connecting portion, and the second covering body is connected to the first end of the first connecting portion; Wherein, one end of the first covering body is connected to the second covering body, and the other end of the first covering body extends upward and is connected to the enclosure plate.

8. The indoor unit according to claim 5, wherein: The plurality of enclosures include two first enclosures and a second enclosure; The two first enclosing plates are arranged opposite to each other along a first direction, and the second enclosing plate and the side plate connected to the cover body are arranged opposite to each other along a second direction, and an angle is formed between the second direction and the first direction; Wherein, each of the first enclosures is provided with the wire passing hole.

9. The indoor unit according to claim 8, wherein: There are two functional modules, and at least one of the two functional modules is electrically connected to the circuit board assembly via a wiring harness passing through a wire hole on the first enclosure disposed near the functional module.

10. The indoor unit according to claim 9, wherein: The two functional modules are a sterilization module and a communication adapter module, and the sterilization module and the communication adapter module are arranged at intervals along the first direction; The sterilization module and the communication adapter module are both electrically connected to the circuit board assembly via a wiring harness passing through a wire hole on the first enclosure disposed near the sterilization module and the communication adapter module.

11. The indoor unit according to claim 5, wherein: The functional module is detachably connected to the cover body.

12. The indoor unit according to claim 11, wherein: The functional module is detachably connected to the cover body via a first fastener.

13. The indoor unit according to claim 11, wherein: The opposite sides of the functional module are detachably connected to the electric control cover via a second fastener and a clamping structure.

14. The indoor unit according to claim 13, wherein: The clamping structure includes a first clamping portion and a second clamping portion; The first clamping portion is provided on one of the functional module and the electric control cover, and the second clamping portion is provided on the other of the functional module and the electric control cover; A first clamping hole for the other to be clamped into is formed on one of the first clamping portion and the second clamping portion, so as to clamp the functional module and the electric control cover together.

15. The indoor unit according to claim 8, wherein Each of the first enclosures is provided with a plurality of the wire-passing holes, and the plurality of the wire-passing holes located on the same first enclosure include at least one high-voltage wire-passing hole and one low-voltage wire-passing hole.

16. The indoor unit according to claim 15, wherein: The plurality of wire-passing holes located on the same first enclosure plate further include user wiring wire-passing holes.

17. The indoor unit according to claim 8, wherein: The cover body includes a covering portion and a first connecting portion, and the enclosure is connected to the covering portion; The first end of the first connecting portion is connected to the covering portion, the second end of the first connecting portion extends toward the side plate, and the first end of the first connecting portion is located above the second end of the first connecting portion; A second connecting portion protruding from the side panel surface is provided on a side of the side panel facing the second enclosure panel, and the second connecting portion is connected to the first connecting portion via a third fastener; The bottom surface of the second connecting portion is an inclined surface in contact with the first connecting portion, the bottom end of the inclined surface is connected to the plate surface of the side plate, and the top end of the inclined surface extends toward the second enclosure plate.

18. The indoor unit according to claim 17, wherein: The side plate is provided with a plurality of second connection parts arranged at intervals.

19. The indoor unit according to any one of claims 2 to 18, wherein: A flange structure folded toward the outer side of the electric control cover is formed on the hole wall of the wire-passing hole.

20. The indoor unit according to any one of claims 2 to 18, wherein: A positioning structure is provided between the separation bracket and the electric control cover, and the positioning structure is configured to define a relative position between the separation bracket and the electric control cover.

21. The indoor unit according to claim 20, wherein: The positioning structure includes a positioning protrusion, and the positioning protrusion is provided on one of the separation bracket and the electric control cover; A positioning hole is provided on the other of the separation bracket and the electric control cover, and the positioning protrusion extends into the positioning hole.

22. The indoor unit according to claim 21, wherein There are a plurality of positioning protrusions, the plurality of positioning protrusions are distributed at intervals, and one positioning protrusion corresponds to one positioning hole.

23. The indoor unit according to any one of claims 3 to 18, wherein: The return air port and the electric control cover are arranged opposite to each other in the up and down directions.

24. The indoor unit according to any one of claims 3 to 18, wherein: There are multiple return air outlets; The occupied areas of the multiple return air vents on the panel cover the projection area of ​​the electric control cover on the panel.

25. The indoor unit according to claim 2, wherein: The separation bracket includes a first plate body, a second plate body and a connecting plate. The first plate body and the second plate body have a height difference in the upper and lower directions. The connecting plate connects the first plate body and the second plate body. The first plate body is provided with at least one first clamping wire body or at least one second clamping wire body. The second plate body is provided with at least one first clamping wire body and / or at least one second clamping wire body.

26. The indoor unit according to claim 25, wherein: The electric control cover includes a first covering body inclined toward the mainboard bracket, the first covering body being disposed adjacent to the heat exchanger of the indoor unit and avoiding the heat exchanger; In the up-down direction, the one of the first plate and the second plate that is closer to the mainboard bracket is located above the first covering body.

27. The indoor unit according to claim 26, wherein: The electric control cover also includes a second covering body connected to the first covering body. In the up-down direction, the first plate and the second plate farther from the mainboard bracket are parallel to the second covering body and located above the second covering body.

28. The indoor unit according to claim 2, wherein: The electric control cover includes a cover portion and two first enclosures fixedly connected to each other, and the two first enclosures are arranged opposite to each other; At least one bundle of the high-voltage wires and at least one bundle of the low-voltage wires pass through the first enclosure and enter the accommodating cavity.

29. The indoor unit according to claim 28, wherein The first enclosure has a plurality of wire holes, and the high-voltage wires and the low-voltage wires are passed through different wire holes.

30. The indoor unit according to claim 1, wherein The separation bracket has at least one first fastener, and the mainboard bracket has at least one second fastener, and the first fastener is connected to the corresponding second fastener by a snap connection.

31. The indoor unit according to any one of claims 1 to 18, 21 to 22, and 25 to 30, wherein: The first wire-holding body includes a first elastic arm extending in a cantilever shape, and the first elastic arm is configured to be elastically pressed on the strong wire. The second wire-holding body includes two second elastic arms extending in a cantilever shape, and the two second elastic arms are arranged facing each other. The free ends of the two second elastic arms form a wire-holding opening for elastically clamping the weak wire.

32. The indoor unit according to any one of claims 2 to 18, 25 to 29, wherein: It also includes a wire pressing cover, which is arranged adjacent to the electric control cover, and the wire pressing cover covers the strong wires and the weak wires.

33. The indoor unit according to any one of claims 2 to 18, 21 to 22, and 25 to 29, wherein: The indoor unit also includes a water receiving tray, which is fixed inside the shell. The strong current components include a motor, and the weak current components include a sensor and a water pump. The water receiving tray is located below the motor, the sensor, the water pump and the electric control cover in the direction of gravity.

34. A heating and ventilation equipment, wherein: The indoor unit comprises the indoor unit according to any one of claims 1 to 33.

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