CN221055117U - Ducted air conditioner indoor unit - Google Patents

Abstract

The utility model discloses a duct type air conditioner indoor unit, which comprises: a casing; a fan assembly; a heat exchanger; a controller, wherein the controller at least controls the fan assembly, and the controller comprises: a box body, a box cover and an electric control board, wherein the box body is arranged at one side of the casing, the electric control board is arranged in the box body and electrically connected to the fan assembly, and the box cover is arranged on the box body; wherein the electric control board has electronic components and wiring terminals, the wiring terminals are arranged at intervals from the electronic components, and the box cover comprises: a first box cover and a second box cover, wherein the first box cover is located outside the electronic components, and the second box cover is located outside the wiring terminals and is detachably connected to the first box cover. Thus, by designing the duct type air conditioner indoor unit, the controller can be split into two parts, one for protecting the electronic components and the other for connecting the main power supply, thereby preventing the electronic components from contacting the leak detection liquid, and further playing a role in protecting the safety of the electric control and the installer.

Description

Ducted air conditioner indoor unit

Technical Field

The utility model relates to the technical field of air conditioning, in particular to a duct type air conditioning indoor unit.

Background technique

The duct type air conditioner indoor unit is a type of air conditioner indoor unit. It is installed in the space between the ceiling or the wall, so it does not occupy the interior space of the room. It is connected to the outdoor unit with a copper pipe to form a refrigerant circulation loop, and the cold or hot air is blown directly to each room through the air duct. Due to its hidden installation, it has less impact on the beauty of the room and its simple structure makes it easy to maintain, so it is widely used.

In the related art, the electrical box of the indoor unit of the ducted air conditioner is generally located on one side of the whole machine and fixed on the side panel. The electrical box is located on the outside of the box body for easy installation and maintenance. When designing the box body of the indoor unit of the ducted air conditioner, in order to save installation space, the gas and liquid pipes and the electrical box are placed on the same side of the box body. However, during the installation and wiring process, the electrical box cover needs to be removed so that the components in the entire electrical box are in an open state. When entering the leak detection stage in this state, the electrical components on the entire circuit board will face the risk of failure due to water ingress, and even cause serious safety accidents.

Utility Model Content

The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a duct type air conditioner indoor unit, which can split the controller into two parts for protecting electronic components and for connecting to the main power supply, thereby avoiding the risk of failure of electronic components during the leak detection process.

According to the first aspect of the utility model, the duct type air conditioner indoor unit comprises: a casing, the casing is used to be installed on the roof, the casing has an air inlet and an air outlet; a fan assembly, the fan assembly is arranged in the casing; a heat exchanger, the heat exchanger is arranged in the casing, the heat exchanger and the fan assembly are arranged at a distance, and the wind sucked from the air inlet by the fan assembly flows out from the air outlet after heat exchange by the heat exchanger; a controller, the controller comprises: a box body, a box cover and an electric control board, the box body is arranged on one side of the casing, the electric control board is arranged in the box body and is electrically connected to the fan assembly, and the box cover is arranged on the box body; wherein the electric control board has electronic components and wiring terminals, the wiring terminals are arranged at a distance from the electronic components, and the box cover comprises: a first box cover and a second box cover, the first box cover is located on the outside of the electronic components, and the second box cover is located on the outside of the wiring terminals and is detachably connected to the first box cover.

Therefore, by designing the ducted air-conditioning indoor unit, the controller can be split into two parts, one for protecting electronic components and the other for connecting to the main power supply, thereby preventing the electronic components from contacting the leak detection liquid, thereby protecting the safety of the electronic control and the installers.

In some examples of the present invention, the wiring terminal is located below the electronic component, and the second box cover is detachably connected to the bottom of the first box cover.

In some examples of the present invention, a wire passing hole is provided on the second box cover, and the wire passing hole is located at the bottom of the second box cover.

In some examples of the present invention, a first hanging portion is provided on the first box cover, and a second hanging portion is provided on the second box cover, and the first hanging portion is hung on the second hanging portion so that the second box cover is hung on the first box cover.

In some examples of the present invention, the first hanging portion is a hook, the hook is integrally formed with the first box body and is bent upward, and the second hanging portion is a hanging opening, the hook is hung on the hanging opening.

In some examples of the present invention, there are multiple first hanging parts, and the multiple first hanging parts are arranged at intervals on the first box cover; there are multiple second hanging parts, and the multiple second hanging parts are arranged at intervals on the second box cover, and the multiple first hanging parts correspond one to one with the multiple second hanging parts.

In some examples of the present invention, the controller further includes: a first fastener and a second fastener, the first box cover is detachably connected to the casing via a plurality of the first fasteners, and the second box cover is detachably connected to the casing via a plurality of the second fasteners.

In some examples of the present invention, an assembly protrusion is provided at an end corner of the second box cover, and the assembly protrusion corresponds to the end corner of the first box cover and has a gap to facilitate assembly of the first box cover and the second box cover.

In some examples of the present invention, the height of the first box cover is h1, the height of the second box cover is h2, and h1 and h2 satisfy the relationship: h1>h2.

In some examples of the present invention, the casing includes: an air inlet casing and an air outlet casing, the air inlet casing is provided with the air inlet, the air outlet casing is provided with the air outlet, the air outlet casing is arranged on one side of the air inlet casing, the fan assembly is arranged in the air inlet casing, the heat exchanger is arranged in the air outlet casing, and the electrical control box is arranged on one side of the air outlet casing.

Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic structural diagram of a duct-type air conditioner indoor unit according to an embodiment of the present utility model;

FIG2 is another schematic structural diagram of a duct-type air conditioner indoor unit according to an embodiment of the present utility model;

3 is a partial structural schematic diagram of a duct-type air-conditioning indoor unit according to an embodiment of the utility model;

FIG4 is an exploded view of a portion of the structure of a duct-type air conditioner indoor unit according to an embodiment of the present utility model;

FIG5 is an exploded view of another partial structure of the duct type air conditioner indoor unit according to an embodiment of the present utility model;

FIG6 is an exploded view of a controller according to an embodiment of the present utility model;

7 is a schematic structural diagram of a box body according to an embodiment of the utility model;

FIG8 is another schematic structural diagram of a box body according to an embodiment of the utility model;

FIG9 is an exploded view of a box body according to an embodiment of the utility model;

FIG. 10 is another exploded view of the box body according to the embodiment of the present invention.

Reference numerals:

100. Duct type air conditioner indoor unit;

10. housing; 11. air inlet housing; 111. air inlet; 12. air outlet housing; 121. air outlet;

20. fan assembly; 30. heat exchanger; 40. controller; 41. box body; 42. box cover; 421. first box cover;

4211, first hanging part; 422, second box cover; 4221, wire hole; 4222, second hanging part;

4223, assembly protrusion; 43, electric control board; 431, electronic components; 432, terminal.

Detailed ways

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

A duct type air conditioner indoor unit 100 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 10 .

The duct type air conditioner indoor unit 100 in the utility model is installed in the space between the ceiling or the wall, so it does not occupy the internal space of the room. The duct type air conditioner belongs to a kind of air conditioner, and the air conditioner includes an indoor unit part and an outdoor unit part, and the indoor unit part and the outdoor unit part are connected by a pipeline to transmit the refrigerant, the indoor unit part includes an indoor heat exchanger 30 and an indoor fan, and the outdoor unit part includes a compressor, a four-way valve, an outdoor heat exchanger, an outdoor fan and an expansion valve, and the compressor, the outdoor heat exchanger, the expansion valve and the indoor heat exchanger 30 connected in sequence form a refrigerant circuit, and the refrigerant circulates in the refrigerant circuit, and exchanges heat with the air through the outdoor heat exchanger and the indoor heat exchanger 30 respectively, so as to realize the cooling mode or heating mode of the air conditioner.

The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

The outdoor heat exchanger is configured to perform heat exchange between outdoor air and the refrigerant transmitted in the outdoor heat exchanger. For example, the outdoor heat exchanger works as a condenser in the cooling mode of the air conditioner, so that the refrigerant compressed by the compressor condenses by dissipating heat to the outdoor air through the outdoor heat exchanger. The outdoor heat exchanger works as an evaporator in the heating mode of the air conditioner, so that the decompressed refrigerant absorbs the heat of the outdoor air through the outdoor heat exchanger and evaporates.

In some embodiments, the outdoor heat exchanger further includes heat exchange fins to expand the contact area between the outdoor air and the refrigerant transmitted in the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

The outdoor fan is configured to draw outdoor air into the air conditioner outdoor unit through the air inlet of the air conditioner outdoor unit, and send the outdoor air after heat exchange with the outdoor heat exchanger out through the air outlet of the air conditioner outdoor unit. The outdoor fan provides power for the flow of outdoor air.

The expansion valve is connected between the outdoor heat exchanger and the indoor heat exchanger 30. The opening of the expansion valve adjusts the pressure of the refrigerant flowing through the outdoor heat exchanger and the indoor heat exchanger 30 to adjust the flow of the refrigerant flowing between the outdoor heat exchanger and the indoor heat exchanger 30. The flow and pressure of the refrigerant flowing between the outdoor heat exchanger and the indoor heat exchanger 30 will affect the heat exchange performance of the outdoor heat exchanger and the indoor heat exchanger 30. The expansion valve can be an electronic valve. The opening of the expansion valve is adjustable to control the flow and pressure of the refrigerant flowing through the expansion valve.

The four-way valve is connected to the refrigerant circuit, and is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner performs a cooling mode or a heating mode.

The indoor heat exchanger 30 is configured to perform heat exchange between the indoor air and the refrigerant transmitted in the indoor heat exchanger 30. For example, the indoor heat exchanger 30 operates as an evaporator in the cooling mode of the air conditioner, so that the refrigerant after dissipating heat through the outdoor heat exchanger absorbs the heat of the indoor air through the indoor heat exchanger 30 and evaporates. The indoor heat exchanger 30 operates as a condenser in the heating mode of the air conditioner, so that the refrigerant after absorbing heat through the outdoor heat exchanger dissipates the heat to the indoor air through the indoor heat exchanger 30 and condenses.

In some embodiments, the indoor heat exchanger 30 further includes heat exchange fins to expand the contact area between the indoor air and the refrigerant transmitted in the indoor heat exchanger 30, thereby improving the heat exchange efficiency between the indoor air and the refrigerant.

The indoor fan is configured to draw indoor air into the air conditioner indoor unit through the air inlet 111 of the air conditioner indoor unit, and send the indoor air after heat exchange with the indoor heat exchanger 30 out through the air outlet 121 of the air conditioner indoor unit. The indoor fan provides power for the flow of indoor air.

The air conditioner also includes a control device. The control device is configured to control the operating frequency of the compressor, the opening of the expansion valve, the rotation speed of the outdoor fan and the rotation speed of the indoor fan. The control device is connected to the compressor, the expansion valve, the outdoor fan and the indoor fan through a data line to transmit communication information.

The control device includes a processor. The processor may include a central processing unit (CPU), a microprocessor (microprocessor), an application specific integrated circuit (ASIC), and may be configured to perform corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device. The non-transitory computer-readable storage medium may include a magnetic storage device (e.g., a hard disk, a floppy disk, or a tape), a smart card, or a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a keyboard drive).

As shown in Figures 1 to 10, the ducted air conditioner indoor unit 100 according to the first embodiment of the utility model includes a casing 10, a fan assembly 20, a heat exchanger 30 and a controller 40. The casing 10 is used to be installed on the roof. The casing 10 has an air inlet 111 and an air outlet 121. The fan assembly 20 is arranged in the casing 10, and the heat exchanger 30 is arranged in the casing 10. The heat exchanger 30 and the fan assembly 20 are arranged at intervals. The wind sucked from the air inlet 111 by the fan assembly 20 flows out from the air outlet 121 after heat exchange in the heat exchanger 30. The controller 40 includes a box body 41, a box cover 42 and an electric The control board 43 and the box body 41 are arranged on one side of the casing 10, the electric control board 43 is arranged in the box body 41, and the electric control board 43 is electrically connected to the fan assembly 20, and the box cover 42 is covered on the box body 41; wherein, the electric control board 43 has electronic components 431 and wiring terminals 432, the wiring terminals 432 are spaced apart from the electronic components 431, and the box cover 42 includes a first box cover 421 and a second box cover 422, the first box cover 421 is located on the outside of the electronic components 431, the second box cover 422 is located on the outside of the wiring terminals 432, and the second box cover 422 is detachably connected to the first box cover 421.

Specifically, the housing 10 is provided with an air inlet 111 and an air outlet 121 for gas circulation. The housing 10 can prevent the outside from interfering with its internal structure and play a protective role. It can also provide a support and fixed position for its internal structure. The heat exchanger 30 and the fan assembly 20 are both arranged in the housing 10. The remote rotation of the fan assembly 20 can form an air negative pressure at the air inlet 111, so that the air of the external environment is sucked into the housing 10. The operation of the fan assembly 20 can also make the heat exchange airflow formed after heat exchange by the heat exchanger 30 be output to the outside through the air outlet 121. The heat exchanger 30 can exchange the heat inside the ducted air conditioner indoor unit 100 and the outside, so as to meet the user's demand for ambient temperature. In this embodiment, the housing 10 can have a square shape and a hollow interior. The air inlet 111 and the air outlet 121 are formed on the two sides of the housing 10 opposite to each other. Therefore, the housing 10 can form a horizontal air flow path from the inside.

Furthermore, the controller 40 is located on one side outside the casing 10, which is convenient for installation and maintenance. The controller 40 is mainly composed of a box body 41, a box cover 42 and an electric control board 43. The box body 41 is attached and fixed to the casing 10, the electric control board 43 is installed in the box body 41, and the box cover 42 is covered on the box body 41. The box cover 42 and the box body 41 together form an all-round coverage protection for the electric control board 43, and the electric control board 43 controls the fan assembly 20 in the form of electrical signals. The electronic components 431 and the wiring terminals 432 are arranged at intervals on the electric control board 43. When the casing 10 of the ducted air-conditioning indoor unit 100 is designed, the gas-liquid pipe and the controller are placed on the same side of the casing 10 to save installation space. However, during the installation and wiring process, it is necessary to remove the box cover so that the electronic components in the entire controller are in an open state directly exposed to the air. The first box cover 421 and the second box cover 422 are respectively covered on the outside of the electronic components 431 and the wiring terminals 432, and the second box cover 422 and the first box cover 421 can be detachably connected. In this way, the controller 40 can be split into two parts, one for protecting the electronic components 431 and the other for connecting the main power supply, thereby avoiding the risk of failure of the electronic components 431 in an open state when entering the leak detection link of the gas-liquid pipe due to water ingress, thereby ensuring the safety of the electronic components 431 and the installers.

Therefore, by designing the ducted air conditioner indoor unit 100, the controller 40 can be split into two parts, one for protecting the electronic components 431 and the other for connecting to the main power supply, thereby preventing the electronic components 431 from contacting the leakage detection liquid, thereby protecting the safety of the electronic control and the installers.

According to some optional embodiments of the utility model, as shown in combination with Figures 4 to 6, the wiring terminal 432 is located below the electronic component 431, and the second box cover 422 is detachably connected to the bottom of the first box cover 421. Specifically, the wiring terminal 432 is mainly used to connect the power supply, and the electronic component 431 is a structural carrier for the product to realize program operation. Compared with the wiring terminal 432 located above the electronic component 431, the second box cover 422 is provided with a hole connecting the inside and outside of the controller 40, and the wiring terminal 432 is located below the electronic component 431. In this way, the leakage detection liquid can be prevented from flowing from the second box cover 422 that is not completely closed above to the electronic component 431 below under the action of its own gravity, thereby effectively avoiding the risk of failure of the electronic component 431 due to contact with the leakage detection liquid.

Specifically, as shown in Figures 6 to 10, the second box cover 422 is provided with a wire hole 4221, and the wire hole 4221 is located at the bottom of the second box cover 422. The second box cover 422, which is arranged outside the wiring terminal 432, is provided with a wire hole 4221 at the bottom, and the wire hole 4221 can be used for the circuit pipeline to pass through the box cover 42 and form a connection with the wiring terminal 432. Moreover, the wire hole 4221 is arranged at the bottom of the second box cover 422, which can save the pipeline layout space and shorten the wiring path, thereby improving the rationality and scientificity of its layout.

According to some optional embodiments of the utility model, as shown in combination with Fig. 6-Fig. 10, the first box cover 421 is provided with a first hanging portion 4211, and the second box cover 422 is provided with a second hanging portion 4222, and the first hanging portion 4211 is hung on the second hanging portion 4222, so that the second box cover 422 is hung on the first box cover 421. Specifically, the first hanging portion 4211 on the first box cover 421 is hung and connected with the second hanging portion 4222 on the second box cover 422, and the second box cover 422 can achieve the effect of pre-assembly positioning through the hanging connection mode, so as to facilitate the assembly and disassembly efficiency of the second box cover 422 on the first box cover 421, and at the same time, the first box cover 421 and the second box cover 422 can be connected as a whole to form an all-round protection for the internal electric control board 43.

Specifically, as shown in Figures 6 to 10, the first hanging portion 4211 is a hook, which is integrally formed with the first box body 41, and the hook is bent upward, and the second hanging portion 4222 is a hanging opening, and the hook is hung on the hanging opening. Among them, the hook and the first box body 41 are processed by an integrated molding process, which can make it faster to form, more stable as a whole, more plastic, and effectively reduce the processing and manufacturing links, thereby improving its practicality and economy. Among them, the hook on the first box body 41 is bent upward, so that an upward external force can be formed on the hanging opening on the second box body 41, thereby achieving the purpose of connecting and supporting the second box body 41.

Further, in combination with FIGS. 6 to 10 , there are multiple first hanging parts 4211, and multiple first hanging parts 4211 are arranged at intervals on the first box cover 421. There are multiple second hanging parts 4222, and multiple second hanging parts 4222 are arranged at intervals on the second box cover 422. Multiple first hanging parts 4211 correspond to multiple second hanging parts 4222. Among them, multiple first hanging parts 4211 and multiple second hanging parts 4222 are hung and connected one by one, respectively, compared with the hanging connection of a single first hanging part 4211 and a second hanging part 4222, the hanging connection force path and force contact area of the first box body 41 and the second box body 41 can be increased, so that the connection force of the first box body 41 and the second box body 41 is more uniform, and the connection strength is greater, thereby improving the connection firmness and reliability of the first box cover 421 and the second box cover 422.

According to some optional embodiments of the present invention, the controller 40 further includes: a first fastener and a second fastener, the first box cover 421 is detachably connected to the housing 10 through a plurality of first fasteners, and the second box cover 422 is detachably connected to the housing 10 through a plurality of second fasteners. Specifically, a plurality of first fasteners penetrate and fix the first box cover 421 and the housing 10 as a whole, and a plurality of second fasteners penetrate and fix the second box cover 422 and the housing 10 as a whole, so that the structures penetrated together can increase each other's weight and spatial mode, thereby enhancing their own structural strength and bending and torsional rigidity, and compared with other connection methods, such as welding, bonding, etc., this connection form is more convenient and simple when the user assembles and disassembles it, thereby improving its structural reliability, practicality and convenience of assembly and disassembly.

According to some optional embodiments of the utility model, in combination with Figures 6 to 10, the end corner of the second box cover 422 is provided with an assembly protrusion 4223, the assembly protrusion 4223 corresponds to the end corner of the first box cover 421, and there is a gap between the assembly protrusion 4223 and the end corner of the first box cover 421, so as to facilitate the assembly of the first box cover 421 and the second box cover 422. Specifically, the end corner of the second box cover 422 facing the box body 41 is provided with an assembly protrusion 4223, the end corner of the first box cover 421 corresponds to the assembly protrusion 4223, and there is a gap between the end corner of the first box cover 421 and the assembly protrusion 4223, so that the end corner of the first box cover 421 and the end corner of the second box cover 422 have a certain assembly margin, which can facilitate the second box cover 422 to be pre-positioned and assembled on the first box cover 421, thereby improving the assembly efficiency of the box cover 42, and then improving the convenience of assembly and disassembly of the box cover 42.

According to some optional embodiments of the utility model, in combination with Figures 6 to 10, the height of the first box cover 421 is h1, the height of the second box cover 422 is h2, and h1 and h2 satisfy the relationship: h1>h2. Specifically, the height of the first box cover 421 is greater than the height of the second box cover 422, and the occupied area of the electronic component 431 on the box body 41 is larger than the occupied area of the terminal 432 on the box body 41, so that the first box cover 421 can achieve a larger coverage protection area for the electronic component 431, and at the same time, the second box cover 422 can meet the coverage protection requirements for the terminal 432, thereby improving the rationality and practicality of the arrangement of the first box cover 421 and the second box cover 422.

According to some optional embodiments of the utility model, as shown in FIG. 1 to FIG. 3, the housing 10 includes: an air inlet housing 11 and an air outlet housing 12, the air inlet housing 11 is provided with an air inlet 111, the air outlet housing 12 is provided with an air outlet 121, the air outlet housing 12 is provided at one side of the air inlet housing 11, the fan assembly 20 is provided in the air inlet housing 11, the heat exchanger 30 is provided in the air outlet housing 12, and the electric control box is provided at one side of the air outlet housing 12. Specifically, a condensate inlet and a condensate outlet are provided on the duct type air conditioner indoor unit 100, and the condensate inlet and the condensate outlet are respectively connected to the heat exchanger 30. The air inlet housing 11 is provided with a heat exchange inlet 111, and the air outlet housing 12 is provided with a heat exchange outlet 121. When the duct type air conditioner indoor unit 100 is running, condensate flows into the heat exchanger 30 from the condensate inlet, and then flows out of the heat exchanger 30 from the condensate outlet. The air flows from the heat exchange inlet 111 on the air inlet housing 11 to the heat exchanger 30 in the air outlet housing 12 under the driving action of the fan assembly 20, and after heat exchange with the condensed water, the temperature of the air increases or decreases, and then is discharged from the heat exchange outlet 121, ultimately achieving the effect of improving the indoor air temperature.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A duct type air conditioner indoor unit, characterized by comprising: A casing having an air inlet and an air outlet formed on two sides opposite to each other; A fan assembly, wherein the fan assembly is disposed in the housing; A heat exchanger, wherein the heat exchanger is disposed in the housing, the heat exchanger and the fan assembly are spaced apart, and the fan assembly drives the air sucked from the air inlet to flow out from the air outlet after heat exchange in the heat exchanger; A controller, the controller at least controls the fan assembly, the controller comprising: a box body, a box cover and an electric control board, the box body is arranged on one side of the housing, the electric control board is arranged in the box body and is electrically connected to the fan assembly, and the box cover is arranged on the box body; Among them, the electric control board has electronic components and wiring terminals, the wiring terminals are spaced apart from the electronic components, and the box cover includes: a first box cover and a second box cover, the first box cover is located on the outside of the electronic components, and the second box cover is located on the outside of the wiring terminals and is detachably connected to the first box cover. 2. The duct type air conditioner indoor unit according to claim 1, characterized in that the wiring terminal is located below the electronic component, and the second box cover is detachably connected to the bottom of the first box cover. 3. The duct type air conditioner indoor unit according to claim 2, characterized in that a wire passing hole is provided on the second box cover, and the wire passing hole is located at the bottom of the second box cover. 4. The duct type air conditioner indoor unit according to claim 1 is characterized in that a first hanging portion is provided on the first box cover, and a second hanging portion is provided on the second box cover, and the first hanging portion is hung on the second hanging portion so that the second box cover is hung on the first box cover. 5. The duct type air conditioner indoor unit according to claim 4 is characterized in that the first hanging portion is a hook, the hook is integrally formed with the first box cover and is bent upward, and the second hanging portion is a hanging opening, the hook is hung on the hanging opening. 6. The ducted air-conditioning indoor unit according to claim 4 is characterized in that there are multiple first hanging parts, and the multiple first hanging parts are arranged at intervals on the first box cover; there are multiple second hanging parts, and the multiple second hanging parts are arranged at intervals on the second box cover, and the multiple first hanging parts correspond one to one with the multiple second hanging parts. 7. The ducted air-conditioning indoor unit according to claim 1 is characterized in that the controller further comprises: a first fastener and a second fastener, the first box cover is detachably connected to the casing through a plurality of the first fasteners, and the second box cover is detachably connected to the casing through a plurality of the second fasteners. 8. The duct type air conditioner indoor unit according to claim 1 is characterized in that an assembly protrusion is provided at the end corner of the second box cover, and the assembly protrusion corresponds to the end corner of the first box cover and has a gap to facilitate the assembly of the first box cover and the second box cover. 9 . The duct type air conditioner indoor unit according to claim 1 , wherein the height of the first box cover is h1 , the height of the second box cover is h2 , and h1 and h2 satisfy the relationship: h1＞h2 . 10. The ducted air-conditioning indoor unit according to claim 1 is characterized in that the casing comprises: an air inlet casing and an air outlet casing, the air inlet casing is provided with the air inlet, the air outlet casing is provided with the air outlet, the air outlet casing is arranged on one side of the air inlet casing, the fan assembly is arranged in the air inlet casing, the heat exchanger is arranged in the air outlet casing, and the electric control board is arranged on one side of the air outlet casing.