Air pipe type air conditioner indoor unit

Abstract

An air duct is formed in a shell, an air return opening and an air outlet are formed in the shell, a filter screen box is arranged at the air return opening, a box body of the filter screen box is connected with the shell, a sub-air duct is formed in the box body, a first sub-air return opening is formed in one end of the box body, a sub-air outlet is formed in the other opposite end of the box body, and a second sub-air return opening is formed in the bottom of the box body. The cover plate is detachably arranged on any one of the first sub air return opening and the second sub air return opening, the filter screen is detachably arranged in the sub air duct, and the adjusting part is detachably arranged in the sub air duct and is configured to block a gap between the filter screen and a side plate of the box body. The filter screen box meets the installation mode of lower air return and rear air return and adapts to different installation scenes, and the problem of installation difficulty or air leakage can be avoided when the filter screen with the non-standard size is adopted.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a duct-type air conditioner indoor unit. Background Technology

[0002] Ductless air conditioner indoor units require a filter to be installed at the return air vent to filter dust or remove harmful substances from the air. The filter can only be installed with a rear return air vent. The disadvantage of this installation method is that sufficient space needs to be left behind the indoor unit for the air duct installation. This cannot be achieved in narrow installation environments (such as when the back of the indoor unit is close to a wall).

[0003] Furthermore, the indoor unit's filter is a standard accessory when it leaves the factory. If a non-standard filter is used when replacing it, a size mismatch will occur. If the new filter is too large, installation will be difficult. If the new filter is too small, air leakage will occur.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] In response to the problems pointed out in the background art, this utility model proposes a duct-type air conditioner indoor unit that meets the installation methods of bottom return air and rear return air, adapts to different installation scenarios, and avoids installation difficulties or air leakage problems when using non-standard size filters.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0007] In some embodiments of this application, a duct-type air conditioner indoor unit is provided, wherein an air duct is formed inside the casing, and a return air inlet and an air outlet are provided on the casing; a heat exchanger is disposed in the air duct and configured to exchange heat with the flowing air; a filter box is disposed at the return air inlet, and the filter box includes:

[0008] The housing is connected to the outer shell. A sub-air duct is formed inside the housing and is connected to the air duct. A first sub-return air inlet is provided at one end of the housing, a sub-air outlet is provided at the other opposite end, and a second sub-return air inlet is provided at the bottom. The first sub-return air inlet and the second sub-return air inlet are connected to the sub-air duct, and the sub-air outlet connects the sub-air duct to the air duct.

[0009] A cover plate is detachably mounted on either the first sub-return air vent or the second sub-return air vent;

[0010] The filter screen is detachably installed inside the sub-duct;

[0011] An adjustment section is detachably disposed within the sub-duct, and the adjustment section is configured to block the gap between the filter and the side plate of the housing.

[0012] The above technical solution has the following advantages or beneficial effects: by installing the cover plate at the first or second sub-return air inlet, the bottom return air or rear return air mode of the indoor unit can be realized by changing the installation position of the cover plate, so that the indoor unit can adapt to different installation scenarios.

[0013] The filter box is equipped with an adjustment part located between the end of the filter screen and the side plate of the box body. The adjustment part seals the gap between the filter screen and the side plate of the box body, thus avoiding air leakage problems caused by the small size of the filter screen.

[0014] The adjustment section is detachable, allowing users to choose whether to install it based on the length of the filter screen to meet different installation needs.

[0015] In some embodiments of this application, the adjustment part includes a windbreak part, which is detachably connected to the first side plate of the housing, and the windbreak part is configured to block the gap between the filter screen and the first side plate.

[0016] Another technical solution described above has the following advantages or beneficial effects: the windbreak is a detachable structure, and whether to install the windbreak depends on the length of the filter screen, thus meeting different installation requirements. The windbreak is connected to the first side plate, but there is no direct connection between the windbreak and the filter screen. The ends of the windbreak and the filter screen are sealed together to achieve a seal, thus eliminating the need to change the structure of the filter screen.

[0017] In some embodiments of this application, the adjusting part includes a deformable part configured to block the gap between the filter and the second side plate of the housing.

[0018] Another technical solution described above has the following advantages or beneficial effects: By sealing the gap between the filter screen and the second side plate with the deformable part, there is no direct connection between the deformable part and the filter screen. The deformable part abuts against the end of the filter screen to achieve a seal, without needing to change the structure of the filter screen. The deformable part can deform under pressure, and the amount of deformation can be used to adapt to filter screens of different sizes.

[0019] In some embodiments of this application, a second opening is provided on the second side plate of the housing, and the filter is configured to be inserted into or removed from the sub-air duct through the second opening.

[0020] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: the filter screen is installed by side pull-out, which is convenient for disassembly and assembly.

[0021] In some embodiments of this application, the filter box further includes a maintenance plate configured to close the second opening.

[0022] Another technical solution described above has the following advantages or beneficial effects: the deformable part is located between the end of the maintenance plate and the filter screen. While sealing the second opening, the maintenance plate also presses and limits the deformable part to the end of the filter screen, thus fixing the deformable part.

[0023] There is no direct mechanical connection between the deformable part and the service plate and filter screen. The deformable part can be removed after the service plate is disassembled.

[0024] In some embodiments of this application, the filter box further includes a slot portion, and the top plate and bottom plate of the box are respectively provided with the slot portion, and the filter is inserted between the two slot portions.

[0025] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: when installing or removing the filter screen, the slot part also plays a guiding role, and the filter screen slides along the slot part, which facilitates the installation and removal of the filter screen.

[0026] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of a filter box according to some embodiments;

[0029] Figure 2 for Figure 1 A structural diagram viewed from Q1;

[0030] Figure 3 This is a schematic diagram of an airflow path for a filter box according to some embodiments;

[0031] Figure 4 This is yet another structural diagram of a filter box according to some embodiments;

[0032] Figure 5 for Figure 4 A structural diagram observed from Q2;

[0033] Figure 6This is a schematic diagram of another airflow path for a filter box according to some embodiments;

[0034] Figure 7 An exploded view of a filter box according to some embodiments;

[0035] Figure 8 This is a structural diagram of an adjustment section, a slot section, and a repair plate according to some embodiments;

[0036] Figure 9 This is a structural diagram of a filter box according to some embodiments, omitting the maintenance plate;

[0037] Figure 10 This is a structural diagram of a housing according to some embodiments;

[0038] Figure 11 An exploded view of a housing according to some embodiments;

[0039] Figure 12 An exploded view of the slot section and the bottom plate of the housing according to some embodiments;

[0040] Figure 13 This is a structural diagram of a mounting bracket according to some embodiments;

[0041] Figure 14 A structural diagram of a mounting slot according to some embodiments;

[0042] Figure 15 This is a structural diagram of a cover plate according to some embodiments;

[0043] Figure 16 This is a structural diagram of a windbreak according to some embodiments;

[0044] Figure 17 This is a structural diagram of a repair board according to some embodiments.

[0045] Figure label:

[0046] 10. Filter box;

[0047] 100. Housing; 110. First side panel; 111. First opening; 120. Second side panel; 121. Second opening; 122. Notch; 123. Flanged edge; 130. Top plate; 140. Bottom plate; 151. Sub-air duct; 152. First sub-return air vent; 153. Second sub-return air vent; 154. Sub-air outlet; 160. Support frame; 170. Hook;

[0048] 200. Filter screen;

[0049] 300. Windshield section; 310. Main body of the windshield; 320. Flanged edge section;

[0050] 400. Deformation section;

[0051] 500, Repair panel; 510, Third opening;

[0052] 600, cover plate;

[0053] 700, Slot section; 710, Mounting bracket; 711, Mounting bracket one; 712, Mounting bracket two; 720, Slot frame; 721, First flap; 722, Second flap. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0060] In this application, the air conditioner performs a refrigeration or heating cycle by using a compressor, condenser, expansion valve, and evaporator. Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into a high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0061] The expansion valve expands the high-temperature, high-pressure liquid refrigerant that condenses in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0062] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in either the indoor or outdoor unit.

[0063] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0064] In some embodiments of this application, the indoor unit is a duct-type indoor unit, including a housing with an air duct formed inside the housing. The housing is provided with a return air inlet and an air outlet, which are respectively connected to the air duct.

[0065] The indoor unit also includes a heat exchanger, which is located in the air duct and is configured to exchange heat with the air flowing through it.

[0066] The indoor unit also includes a fan, which is installed in the air duct and is configured to provide power for air circulation.

[0067] The indoor unit also includes a filter box 10, which is located at the return air vent. For example, the return air vent is located on the rear side of the indoor unit casing, and the air outlet is located on the front side, with the return air vent and the air outlet facing each other.

[0068] Figure 1 This is a structural diagram of the filter box 10. Figure 2 for Figure 1 A structural diagram observed from Q1, Figure 4 This is another structural diagram of the filter box 10. Figure 5 for Figure 4 A structural diagram observed from Q2. Figure 3 for Figure 1 The diagram shows the airflow path of the filter box 10. Figure 6 for Figure 4 The diagram shows the airflow path of the filter box 10. Figure 7 An exploded view of the filter box 10.

[0069] The filter box 10 includes a box body 100, which is fixedly connected to the housing. The box body 100 is fixedly installed at the return air vent of the indoor unit housing. The housing and the box body 100 together form the external outline of the duct-type indoor unit. Figure 10 This is a structural diagram of box 100. Figure 11 An exploded view of the filter box 10.

[0070] A sub-air duct 151 is formed inside the housing 100, and the sub-air duct 151 is connected to the air duct formed by the housing. A first sub-return air inlet 152 is provided at one end of the housing 100, and a sub-exit air outlet 154 is provided at the opposite end of the housing 100. The first sub-return air inlet 152 and the sub-exit air outlet 154 are arranged opposite to each other, and a second sub-return air inlet 153 is provided at the bottom of the housing 100. The first sub-return air inlet 152 and the second sub-return air outlet 153 are connected to the sub-air duct 151, and the sub-exit air outlet 154 connects the sub-air duct 151 to the air duct.

[0071] The filter box 10 also includes a cover plate 600, which is detachably mounted on either the first sub-return air inlet 152 or the second sub-return air inlet 153. Figure 15This is a structural diagram of cover plate 600.

[0072] The filter box 10 also includes a filter 200, which is detachably disposed in the sub-duct 151 and is configured to filter the air flowing through it.

[0073] Figure 1 and Figure 2 In the filter box 10 shown, the cover plate 600 is located at the second sub-return air inlet 153 at the bottom. At this time, the first sub-return air inlet 152 on the rear side is open, and the duct-type indoor unit adopts the rear return air method. Figure 3 This is a schematic diagram of the rear return air of the filter box 10. Outside air enters the sub-air duct 151 of the filter box 10 through the first sub-return air inlet 152, is filtered by the filter 200, and then flows into the air duct of the indoor unit casing through the sub-outlet 154. After heat exchange by the heat exchanger, it flows out from the air outlet of the indoor unit.

[0074] Figure 4 and Figure 5 In the filter box 10 shown, the cover plate 600 is located at the first sub-return air inlet 152 on the rear side. At this time, the second sub-return air inlet 153 on the bottom side is open, and the duct-type indoor unit adopts the bottom return air method. Figure 6 This is a schematic diagram of the bottom return air of the filter box 10. Outside air enters the sub-air duct 151 of the filter box 10 through the second sub-return air inlet 153, is filtered by the filter 200, and then flows into the air duct of the indoor unit casing through the sub-outlet 154. After heat exchange by the heat exchanger, it flows out from the air outlet of the indoor unit.

[0075] The cover plate 600 is installed at the first sub-return air inlet 152 or the second sub-return air inlet 153. By changing the installation position of the cover plate 600, the indoor unit can be configured for bottom return air or rear return air, so that the indoor unit can adapt to different installation scenarios.

[0076] For example, if the back of the ducted indoor unit is close to the wall, the cover plate 600 can be installed at the first sub-return air inlet 152, and the indoor unit can use the bottom return air method, thus solving the problem of narrow installation space.

[0077] In some embodiments of this application, the filter box 10 further includes an adjustment section, which is detachably disposed in the sub-air duct 151 and is configured to block the gap between the filter 200 and the side plate of the box body 100.

[0078] After the indoor unit has been used for a period of time, the filter 200 needs to be replaced to ensure the air filtration effect. If the user uses a non-standard size filter 200, for example, if the filter 200 is smaller than the standard size, there will be a gap between the filter 200 and the side panel of the housing 100, resulting in air leakage. Unfiltered air will enter the room, reducing air quality.

[0079] The filter box 10 of this application is provided with an adjustment part, which is located between the end of the filter 200 and the side plate of the box body 100. The adjustment part is used to seal the gap between the filter 200 and the side plate of the box body 100, thereby avoiding the air leakage problem caused by the small size of the filter 200.

[0080] The adjustment section is detachable, and users can choose whether to install the adjustment section based on the length of the filter 200 to meet different installation needs.

[0081] In some embodiments of this application, the adjusting part includes a windbreak part 300. Figure 16 This is a structural diagram of a windbreak 300. The windbreak 300 is detachably connected to the first side plate 110 (e.g., the left side plate) of the housing 100, and the windbreak 300 is configured to block the gap between the filter screen 200 and the first side plate 110.

[0082] The wind deflector 300 is designed to be detachable. Whether or not to install the wind deflector 300 depends on the length of the filter screen 200, in order to meet different installation requirements.

[0083] The windbreak 300 is connected to the first side plate 110. The windbreak 300 and the filter screen 200 are not directly connected. The ends of the windbreak 300 and the filter screen 200 are sealed together to achieve a seal. In this way, there is no need to change the structure of the filter screen 200.

[0084] In some embodiments of this application, reference is made to Figure 16 The windbreak 300 includes a windbreak body 310 and a flange 320 with an integral structure, and the windbreak 300 has an L-shaped plate structure.

[0085] Reference Figure 11 The first side plate 110 is provided with a first opening 111, which is a long slit structure and is directly opposite the end of the filter screen 200.

[0086] The windshield main body 310 is inserted into the sub-air duct 151 from the outside of the housing 100 through the first opening 111. The windshield main body 310 is directly opposite the filter screen 200, and the ends of the windshield main body 310 and the filter screen 200 abut against each other to seal the gap between the filter screen 200 and the first side plate 110. The flanged part 320 is attached to the outside of the first side plate 110 and fixed with screws.

[0087] When the size of the filter screen 200 is smaller than the standard size, a windbreak part 300 can be installed to seal the gap between the filter screen 200 and the side plate of the housing 100, thus preventing air leakage.

[0088] If the size of the filter 200 is appropriate, there is no need to install the windbreak 300. In this case, the end of the filter 200 is directly opposite the first opening 111 and blocks the first opening 111.

[0089] In some embodiments of this application, the width of the baffle body is denoted as d1, and the size range of d1 is 40-60mm.

[0090] In some embodiments of this application, the adjustment part includes a deformation part 400, which is configured to block the gap between the filter 200 and the second side plate 120 (e.g., the right side plate) of the housing 100.

[0091] The gap between the filter screen 200 and the second side plate 120 is sealed by the deformation part 400. There is no direct connection between the deformation part 400 and the filter screen 200. The deformation part 400 and the end of the filter screen 200 abut against each other to achieve a seal, without changing the structure of the filter screen 200.

[0092] The deformation part 400 can deform under pressure, and the amount of deformation of the deformation part 400 can be used to adapt to filter screens 200 of different sizes.

[0093] For example, the deformable part 400 is a soft sealing gasket, which is low in cost.

[0094] In some embodiments of this application, the width of the deformable part 400 is denoted as d2, and the size range of d2 is 20-40mm.

[0095] In some embodiments of this application, the adjustment section includes a windbreak section 300 and / or a deformation section 400. The windbreak section 300 is detachably disposed between the filter screen 200 and the first side plate 110, and is configured to block the gap between the filter screen 200 and the first side plate 110. The deformation section 400 is detachably disposed between the filter screen 200 and the second side plate 120, and is configured to block the gap between the filter screen 200 and the second side plate 120. The first side plate 110 and the second side plate 120 are disposed opposite to each other. For example, the first side plate 110 is the left side plate of the housing 100, and the second side plate 120 is the right side plate of the housing 100.

[0096] Users can choose to install one or both of the windbreak part 300 and the deformation part 400, or neither, depending on the length of the filter 200, in order to accommodate the installation requirements of different sized filters 200 and avoid air leakage problems caused by the small size of the filter 200.

[0097] In some embodiments of this application, reference is made to Figure 10 and Figure 11The enclosure 100 includes a top plate 130 and a bottom plate 140 arranged vertically opposite each other, and a first side plate 110 and a second side plate 120 arranged horizontally opposite each other. The top plate 130, the bottom plate 140, the first side plate 110 and the second side plate 120 form a sub-air duct 151.

[0098] The front end of the housing 100 has a sub-air outlet 154, and the rear end of the housing 100 has a first sub-air return outlet 152. The width of the bottom plate 140 is smaller than the width of the top plate 130. The bottom plate 140 is located near the front end of the housing 100. Because the bottom plate 140 is small, a second sub-air return outlet 153 is formed at the bottom of the housing 100.

[0099] Multiple support frames 160 are provided inside the housing 100 to improve the structural strength of the housing 100. For example, support frames 160 are respectively provided between the top plate 130 and the first side plate 110 and the second side plate 120.

[0100] Hooks 170 are provided on the first side panel 110 and the second side panel 120 respectively to meet the hoisting requirements of the duct-type indoor unit.

[0101] In some embodiments of this application, reference is made to Figure 9 and Figure 10 The second side plate 120 of the housing 100 is provided with a second opening 121, and the filter screen 200 is configured to be inserted into or removed from the sub-air duct 151 through the second opening 121.

[0102] The filter 200 is installed using a side pull-out method, making it easy to install and remove.

[0103] The second opening 121 has notches 122 on its opposite sides. When assembling or disassembling the filter 200, the user's hand can enter the notches 122 to hold the filter 200, which is convenient for operation.

[0104] In some embodiments of this application, the filter box 10 further includes a maintenance plate 500, which is configured to close the second opening 121. Figure 17 This is a structural diagram of a repair board 500.

[0105] The deformable part 400 is located between the end of the maintenance plate 500 and the filter screen 200. While sealing the second opening 121, the maintenance plate 500 also squeezes and limits the deformable part 400 to the end of the filter screen 200, thereby fixing the deformable part 400.

[0106] There is no direct mechanical connection between the deformation part 400, the maintenance plate 500, and the filter screen 200. After disassembling the maintenance plate 500, the deformation part 400 can be removed.

[0107] In some embodiments of this application, a limiting groove (not shown) is provided on the maintenance plate 500, and one side of the deformable part 400 is located in the limiting groove, which helps to improve the installation reliability of the deformable part 400.

[0108] In some embodiments of this application, reference is made to Figure 17 The maintenance panel 500 has a third opening 510. (See reference...) Figure 9 A flange 123 is provided at the edge of the notch 122 of the second opening 121. When installing the maintenance plate 500, the flange 123 is inserted into the third opening 510 to achieve the pre-positioning of the maintenance plate 500, and then the maintenance plate 500 is fixed to the second side plate 120 by screws.

[0109] In some embodiments of this application, reference is made to Figure 10 The filter box 10 also includes slots 700. Slots 700 are respectively provided on the top plate 130 and bottom plate 140 of the box body 100, and the filter 200 is inserted between the two slots 700. The filter 200 is fixedly installed in the box body 100 through the two slots 700.

[0110] When installing or removing the filter 200, the slot 700 also serves as a guide, allowing the filter 200 to slide along the slot 700, which facilitates the installation and removal of the filter 200.

[0111] Reference Figure 8 The two slots 700, the windproof part 300 and the deformation part 400 form the installation space of the filter 200. The filter 200 is sealed on all sides to prevent air leakage around the filter 200.

[0112] In some embodiments of this application, the two slot portions 700 are arranged obliquely opposite each other so that the filter 200 is inclinedly disposed within the sub-air duct 151, thereby increasing the area of ​​the filter 200 within the limited sub-air duct 151, which helps to improve the air filtration effect.

[0113] In some embodiments of this application, reference is made to Figure 12 The slot section 700 includes a mounting bracket 710 and a slot bracket 720. The mounting bracket 710 is fixedly connected to the base plate 140 and the top plate 130 by screws. The slot bracket 720 is fixedly connected to the mounting bracket 710 by screws. The slot bracket 720 forms a slot for installing the filter screen 200. Figure 13 This is a structural diagram of mounting bracket 710. Figure 14 This is a structural diagram of a slot holder 720.

[0114] The slot bracket 720 is fixedly installed into the housing 100 by the mounting bracket 710, which helps to improve the structural strength.

[0115] In some embodiments of this application, the mounting bracket 710 includes a mounting bracket part 711 and a mounting bracket part 712 with an integral structure, and the mounting bracket part 711 and the mounting bracket part 712 have an included angle. The mounting bracket part 711 is fixedly connected to the top plate 130 or the bottom plate 140 by screws, and the mounting bracket part 712 is fixedly connected to the slot bracket 720 by screws.

[0116] The mounting bracket 712 is tilted, thus achieving the tilted installation requirement of the filter 200.

[0117] In some embodiments of this application, the left and right side walls of the slot frame 720 are respectively composed of a first flap 721 and a second flap 722 arranged at intervals. The height of the first flap 721 is greater than the height of the second flap 722. Thus, the higher first flap 721 helps to improve the limiting effect on the filter 200, while the lower second flap 722 helps to reduce the area of ​​the flap covering the filter 200 and reduce the impact of the flap on the airflow.

[0118] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0119] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A ducted air conditioner indoor unit, comprising: The housing has an internal air duct, and the housing is provided with a return air inlet and an air outlet; A heat exchanger, disposed within the air duct, is configured to exchange heat with the flowing air; characterized in that It also includes: A filter box, disposed at the return air vent, comprises: The housing is connected to the outer shell. A sub-air duct is formed inside the housing and is connected to the air duct. A first sub-return air inlet is provided at one end of the housing, a sub-air outlet is provided at the other opposite end, and a second sub-return air inlet is provided at the bottom. The first sub-return air inlet and the second sub-return air inlet are connected to the sub-air duct, and the sub-air outlet connects the sub-air duct to the air duct. A cover plate is detachably mounted on either the first sub-return air vent or the second sub-return air vent; The filter screen is detachably installed inside the sub-duct; An adjustment section is detachably disposed within the sub-duct, and the adjustment section is configured to block the gap between the filter and the side plate of the housing.

2. The ducted air conditioner indoor unit according to claim 1, characterized in that, The adjustment section includes a windbreak section, which is detachably connected to the first side plate of the housing. The windbreak section is configured to block the gap between the filter screen and the first side plate.

3. The ducted air conditioner indoor unit according to claim 2, characterized in that, The windbreak includes a windbreak body and a flange. A first opening is provided on the first side plate. The windbreak body is inserted into the sub-air duct through the first opening to seal the gap between the filter and the first side plate. The flange is connected to the first side plate.

4. The ducted air conditioner indoor unit according to claim 1, characterized in that, The adjustment section includes a deformation section configured to block the gap between the filter screen and the second side plate of the housing.

5. The ducted air conditioner indoor unit according to claim 1, characterized in that, A second opening is provided on the second side panel of the housing, and the filter is configured to be inserted into or removed from the sub-air duct through the second opening.

6. The ducted air conditioner indoor unit according to claim 5, characterized in that, The filter box also includes a maintenance plate configured to close the second opening.

7. The ducted air conditioner indoor unit according to claim 6, characterized in that, The adjustment section includes a deformation section configured to block the gap between the filter screen and the second side plate, the deformation section being located between the end of the filter screen and the maintenance plate.

8. The ducted air conditioner indoor unit according to claim 1, characterized in that, The filter box also includes a slot portion, with the slot portion respectively provided on the top plate and bottom plate of the box body, and the filter screen is inserted between the two slot portions.

9. The ducted air conditioner indoor unit according to claim 8, characterized in that, The two slots are arranged obliquely opposite each other so that the filter screen is inclinedly disposed in the sub-duct.

10. A ducted air conditioner indoor unit, comprising: The housing has an internal air duct, and the housing is provided with a return air inlet and an air outlet; A heat exchanger, disposed within the air duct, is configured to exchange heat with the flowing air; characterized in that It also includes: A filter box, disposed at the return air vent, comprises: A housing is connected to the outer shell, and a sub-air duct is formed inside the housing, which is connected to the air duct. The filter screen is detachably installed inside the sub-duct; An adjustment section is detachably disposed within the sub-duct, and the adjustment section is configured to block the gap between the filter and the side plate of the housing.

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