Ducted fan

Abstract

The application discloses a ducted air conditioner, and a fresh air module of the ducted air conditioner comprises a shell, a fan, a ventilation cavity and a filter screen assembly. The shell is provided with a first air outlet. The fan comprises a volute arranged in the shell and a fan wheel arranged in the volute. The ventilation cavity is formed in the shell and has a second air outlet. Fresh air from outdoors enters indoors through the ventilation cavity, the second air outlet, the fan and the first air outlet in sequence. The filter screen assembly is arranged in the shell and located between the second air outlet and an air inlet end of the fan wheel. A surface of a first supporting member facing a second supporting member is provided with a first inclined protruding rib which is inclined relative to a bottom wall of the shell. A surface of the second supporting member facing the first supporting member is provided with a second inclined protruding rib which is inclined relative to the bottom wall of the shell. The filter screen assembly is movably arranged on the first inclined protruding rib and the second inclined protruding rib through a pull-out opening. The filter screen assembly can block the pull-out opening and is partially exposed outside the shell. An included angle between the first inclined protruding rib and the bottom wall of the shell is alpha (10° <= alpha <= 18°).

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to a duct air conditioner. Background Technology

[0002] A ducted air conditioner indoor unit, or simply a ducted unit, is a type of air conditioner indoor unit that is typically installed inside a suspended ceiling to supply air into the room for heat exchange. With the continuous optimization of air conditioner performance, many existing ducted units now integrate a fresh air module, thus enabling them to provide fresh air and improve indoor air quality.

[0003] To meet users' requirements for fresh air quality, fresh air modules typically have internal filters installed in a filter frame to remove dust, lint, and other impurities from the fresh air, thereby improving its quality. Since the filters are primarily used to remove dust and lint, and the total amount of dust, lint, and other impurities a filter can absorb is limited, users need to replace the filters regularly to maintain their filtering effectiveness.

[0004] However, in the fresh air modules of related technologies, when disassembling or installing the filter, it is usually necessary to first remove the panel or maintenance plate before manually taking out the internal filter, then install the new filter, and finally fix the panel or maintenance plate with screws. This makes the disassembly and assembly of the filter quite troublesome and inconvenient for regular replacement of the filter. Utility Model Content

[0005] This application discloses a ducted air conditioner that simplifies the process of disassembling and assembling the filter of the fresh air module, improves the efficiency of filter disassembly and assembly, and facilitates quick filter replacement.

[0006] To achieve the above objectives, this application discloses a ducted air conditioning unit, which includes a fresh air module, the fresh air module comprising: The outer casing has a first air vent. The fan includes: A volute, which is disposed inside the outer shell, has an air inlet and an air outlet; The wind turbine is disposed inside the volute. A ventilation cavity is formed inside the volute. The ventilation cavity has a second air inlet. Fresh outdoor air enters the room sequentially through the ventilation cavity, the second air inlet, the air inlet, the impeller, the air outlet, and the first air inlet. A filter assembly is disposed within the housing, and in the direction of fresh air flow from the second air inlet to the air inlet, the filter assembly is located between the third air inlet and the air inlet; The outer casing has a pull-out opening on the bottom wall along the axial direction of the wind turbine. The bottom wall of the outer casing is provided with a first support member and a second support member. The first support member and the second support member are respectively located on both sides of the pull-out opening and are located inside the outer casing. The first support member has a first inclined rib protruding from its surface facing the second support member, and the first inclined rib is inclined relative to the bottom wall of the outer shell; The second support member has a second inclined rib protruding from its surface toward the first support member, and the second inclined rib is inclined relative to the bottom wall of the outer shell; The filter assembly is movably and detachably mounted on the first inclined rib and the second inclined rib through the pull-out opening, and the filter assembly can block the pull-out opening, with a portion exposed outside the outer shell; The angle between the first inclined rib and the bottom wall of the outer shell is α, where 10°≤α≤18°.

[0007] In the duct air conditioner provided in this application embodiment, a pull-out opening is provided on the bottom wall of the outer casing, and a first support member and a second support member are protruding from the bottom wall of the outer casing. The first support member and the second support member are respectively located on both sides of the pull-out opening and are located inside the outer casing. The surface of the first support member facing the second support member has a first inclined rib that is inclined relative to the bottom wall of the outer casing, and the surface of the second support member facing the first support member has a second inclined rib that is inclined relative to the bottom wall of the outer casing. The filter assembly is movably and detachably mounted on the first and second inclined ribs through the pull-out opening. When the filter... When the component is inserted into the housing through the pull-out port, the filter assembly blocks the pull-out port, and part of the filter assembly is located outside the housing. Therefore, when it is necessary to disassemble or install the filter assembly, the part of the filter assembly exposed outside the housing can be pulled out to complete the quick disassembly or installation of the filter assembly. In other words, the operator can perform the disassembly or installation of the filter assembly from outside the fresh air module without having to remove the inspection cover first. The operation is very simple and convenient, greatly simplifying the disassembly or installation process of the filter assembly, enabling quick replacement of the filter assembly, improving the convenience of filter replacement, and saving time and effort.

[0008] At the same time, the included angle α between the first inclined rib and the bottom wall of the outer shell is controlled within the range of 10°-18°, which can increase the filtration area of ​​the filter assembly and improve the filtration efficiency of the filter assembly; and also allows the leeward side of the filter assembly to be set slightly towards the air inlet of the volute, so that the fresh air after passing through the filter assembly can flow to the air inlet of the volute. Attached Figure Description

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

[0010] Figure 1 This is a schematic diagram of the structure of the fresh air module disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the fresh air module disclosed in the embodiments of this application from another perspective; Figure 3 This is a structural schematic diagram of the fresh air module disclosed in the embodiments of this application from another perspective; Figure 4 The fresh air module disclosed in the embodiments of this application is along Figure 3 One of the three-dimensional sectional views along the AA direction; Figure 5 The fresh air module disclosed in this application embodiment is along Figure 3 The second three-dimensional sectional view along the AA direction; Figure 6 The fresh air module disclosed in the embodiments of this application is along Figure 3 A three-dimensional sectional view along the BB direction; Figure 7 This is a first exploded structural diagram of the fresh air module disclosed in the embodiments of this application; Figure 8 This is a second exploded structural diagram of the fresh air module disclosed in the embodiments of this application; Figure 9 yes Figure 8 A schematic diagram of the exploded structure of the fresh air module from another perspective; Figure 10 This is a front view of the fresh air module disclosed in the embodiments of this application; Figure 11 The fresh air module disclosed in the embodiments of this application is along Figure 10 A three-dimensional sectional view along the CC direction; Figure 12 yes Figure 11 A magnified view of point M in the image; Figure 13 yes Figure 11 A magnified view of point N in the image; Figure 14 The fresh air module disclosed in this application embodiment is along Figure 10 A three-dimensional sectional view along the DD direction in the figure; Figure 15 yes Figure 14 A magnified view of point O in the image; Figure 16 yes Figure 14 A magnified view of point P in the image; Figure 17 yes Figure 14 A magnified view of the area at point R in the image; Figure 18 A third exploded structural diagram of the fresh air module disclosed in this application embodiment; Figure 19 This is a schematic diagram of the internal structure of the fresh air module disclosed in the embodiments of this application.

[0011] Explanation of main figure symbols 100 - Fresh air module; 11 - Outer casing; 11a - Housing; 11a1 - Bottom opening; 11b - First panel; 11b1 - First extension; 11b2 - Second extension; 11c - Second panel; 11c1 - Third extension; 11c2 - Fourth extension; 111 - First air vent; 112 - Third air vent; 113 - Pull-out opening; 114 - First support member; 1141 - First inclined rib; 1142 - First guide rib; 1143 - First guide rail; 115 - Second support member; 1151 - Second inclined rib; 1152 - Second guide rib; 1153 - Second guide rail; 12 - Fan; 12 1-Volume; 1211-Air inlet; 1212-Air outlet; 1213-First baffle; 122-Impeller; 13-Ventilation cavity; 131-Second air outlet; 132-Fourth air outlet; 133-Fifth air outlet; 14-Filter assembly; 14a-First side; 14a1-First rib; 14b-Second side; 14b1-Second rib; 141-Handle; 1411-Handle groove; 1412-Grip protrusion; 142-Second baffle; 143-Filter structure; 1431-Filter frame; 1432-Filter; 144-Cover plate; 15-Duct connector; 16-Sealing component; 17-Elastic layer. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this application clearer, the exemplary embodiments of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments. That is, the specific embodiments described herein are merely used to explain this application and are not intended to limit this application.

[0013] It should be noted that the brief descriptions of terminology used in this application are merely for the purpose of facilitating understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0014] 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.

[0015] The terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first air vent may be referred to as a second air vent, and similarly, a second air vent may be referred to as a first air vent. Both the first air vent and the second air vent are air vents, but they are not the same air vent.

[0016] Furthermore, 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. Thus, 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.

[0017] 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.

[0018] In the description of this application, it should be noted that the singular forms of "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that terms such as "comprising / including" or "having" specify the presence of the stated features, integrals, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integrals, steps, operations, components, parts, or combinations thereof.

[0019] In addition, the term "and / or" as used in this specification includes any and all combinations of the related listed items. For example, A and / or B can mean: A alone, A and B together, or B alone. That is, the term "and / or" as used in this specification includes any and all combinations of the related listed items.

[0020] As analyzed in the background section, the fresh air modules of ducted air conditioners in related technologies all feature removable filters, allowing for replacement after a period of use. However, installing or removing the filters typically requires first removing the access cover, making the process cumbersome. In other words, to remove or install the filters, the access cover must first be removed before the filters inside the fresh air module can be manually taken out, a new filter installed, and finally the fresh air module secured with screws, making this process quite troublesome.

[0021] In addition, during the disassembly and assembly process, users may find that the connection between the access cover and the outer shell of the fresh air module is not properly sealed, resulting in air leakage. This can cause condensation and dripping water at the connection between the access cover and the outer shell in low temperature and high humidity environments, leading to user dissatisfaction.

[0022] In addition, most fresh air modules, like ducted air conditioners, are ceiling-mounted, which means that removing and installing the filter requires climbing to a height. Since the filter is a part that is replaced frequently, the inconvenience of removing and installing the filter can easily lead to user dissatisfaction.

[0023] In view of this, the present application provides a duct air conditioner that can improve the convenience of replacing the filter assembly. In the fresh air module of the duct air conditioner, it is not necessary to remove the inspection cover before disassembling the filter assembly. Therefore, it can avoid the situation where the inspection cover is not sealed properly due to improper disassembly and assembly by the user, which can easily cause condensation and dripping water at the inspection cover in low temperature and high humidity environment.

[0024] In this application, the ducted air conditioner is the indoor unit of an air conditioner, and its working principle is the same as that of other air conditioners (such as the indoor units of wall-mounted or floor-standing air conditioners).

[0025] In other words, an air conditioner typically consists of a duct unit (i.e., an indoor unit) and an outdoor unit. The air conditioner performs a refrigeration cycle in the indoor unit by using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0026] The compressor compresses the refrigerant gas at a low temperature and low pressure, discharging it as a high temperature and high pressure gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0027] The expansion valve causes the high-temperature, high-pressure liquid refrigerant condensed in the condenser to expand into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve, returning the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the ducted air conditioner can regulate the temperature of the indoor space.

[0028] The outdoor unit of an air conditioner includes the compressor and outdoor heat exchanger of the refrigeration cycle, while the indoor unit includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0029] Indoor and outdoor heat exchangers can be used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the ducted air conditioner is used as a heater in heating mode. When the indoor heat exchanger is used as an evaporator, the ducted air conditioner is used as a cooler in cooling mode.

[0030] In some embodiments, in order to improve indoor air quality, ducted air conditioners typically have a fresh air function, for example, the ducted air conditioner integrates a fresh air module, that is, the ducted air conditioner includes a fresh air module.

[0031] For example, a ducted air conditioning unit may include a main unit and a fresh air module connected to the main unit. The main unit is the indoor unit mentioned above.

[0032] The technical solutions of some 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.

[0033] Please see Figure 1 and Figure 2The fresh air module provided in this application embodiment includes a housing 11, which serves as an external protective component for the fresh air module 100. Its internal space can be used to accommodate various functional devices of the fresh air module 100, such as the fan and filter assembly mentioned later.

[0034] The outer casing 11 has a first air vent 111.

[0035] like Figure 3 and Figure 4 As shown, in some embodiments, the fresh air module 100 provided in this application includes a fan 12 and a ventilation cavity 13.

[0036] like Figure 4 and Figure 5 As shown in this application, the fan 12 may include a volute 121 and a fan wheel 122. The volute 121 is disposed inside the outer casing 11 and has an air inlet 1211 and an air outlet 1212. The air outlet 1212 can communicate with the first air outlet 111. The fan wheel 122 is disposed inside the volute 121.

[0037] In this application, a ventilation cavity 13 is formed within the volute 121 and communicates with the outside. For example, the ventilation cavity 13 can communicate with the outside through a fifth air vent 133, and the ventilation cavity 13 has a second air vent 131 communicating with the air inlet 1211. Thus, when the impeller 122 is running, fresh air from the outside can enter the room sequentially through the fifth air vent 133, the ventilation cavity 13, the second air vent 131, the air inlet 1211, the impeller 122, the air outlet 1212, and the first air vent 111 to keep the indoor air fresh.

[0038] Combination Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, at least one of the first air vent 111 and the air outlet 1212 is openable and closable. That is, only the first air vent 111, only the air outlet 1212, or both the first air vent 111 and the air outlet 1212 can be opened and closed. Normally, whether the first air vent 111, the air outlet 1212, or both are openable and closable, if at least one of them is closed, outdoor fresh air usually cannot enter the room. However, when both the first air vent 111 and the air outlet 1212 are openable and closable, both the first air vent 111 and the air outlet 1212 need to be open for outdoor fresh air to enter the room. Moreover, the second air vent 131 is openable and closable, the outer casing 11 also has an openable and closable third air vent 112, and the ventilation cavity 13 also has an openable and closable fourth air vent 132.

[0039] When only the first air vent 111 can be opened and closed among the first air vent 111 and the air outlet 1212, in the fresh air module 100 in fresh air mode, the first air vent 111 and the second air vent 131 are open, and the third air vent 112 and the fourth air vent 132 are closed. Outdoor fresh air enters the room sequentially through the fifth air vent 133, the ventilation cavity 13, the second air vent 131, the air inlet 1211, the impeller 122, the air outlet 1212, and the first air vent 111. In the fresh air module 100 in exhaust mode, the first air vent 111 and the second air vent 131 are closed, and the third air vent 112 and the fourth air vent 132 are open. Indoor air is exhausted to the outside sequentially through the third air vent 112, the air inlet 1211, the impeller 122, the air outlet 1212, the fourth air vent 132, the ventilation cavity 13, and the fifth air vent 133.

[0040] When only the air outlet 1212 can be opened and closed among the first air outlet 111 and the air outlet 1212, in the fresh air module 100 in fresh air mode, the air outlet 1212 and the second air outlet 131 are open, and the third air outlet 112 and the fourth air outlet 132 are closed. The fresh air from outside enters the room sequentially through the fifth air outlet 133, the ventilation cavity 13, the second air outlet 131, the air inlet 1211, the impeller 122, the air outlet 1212, and the first air outlet 111. In the exhaust mode, the air outlet 1212 and the second air outlet 131 are closed, and the third air outlet 112 and the fourth air outlet 132 are open. The air in the room is exhausted to the outside sequentially through the third air outlet 112, the air inlet 1211, the impeller 122, the air outlet 1212, the fourth air outlet 132, the ventilation cavity 13, and the fifth air outlet 133.

[0041] When both the first air vent 111 and the air outlet 1212 can be opened and closed, in the fresh air module 100 in fresh air mode, the first air vent 111, the air outlet 1212 and the second air vent 131 are open, and the third air vent 112 and the fourth air vent 132 are closed. Outdoor fresh air enters the room sequentially through the fifth air vent 133, the ventilation cavity 13, the second air vent 131, the air inlet 1211, the impeller 122, the air outlet 1212 and the first air vent 111. In the fresh air module 100 in exhaust mode, the first air vent 111, the air outlet 1212 and the second air vent 131 are closed, and the third air vent 112 and the fourth air vent 132 are open. Indoor air is exhausted to the outside sequentially through the third air vent 112, the air inlet 1211, the impeller 122, the air outlet 1212, the fourth air vent 132, the ventilation cavity 13 and the fifth air vent 133.

[0042] Taking the example where only the air outlet 1212 can be opened and closed among the first air vent 111 and the air outlet 1212, when fresh air needs to be introduced, the impeller 122 is activated. At this time, the air outlet 1212 and the second air vent 131 are in the open state, while the third air vent 112 and the fourth air vent 132 are in the closed state. The fresh outdoor air enters the room sequentially through the fifth air vent 133, the ventilation cavity 13, the second air vent 131, the air inlet 1211, the impeller 122, the air outlet 1212, and the first air vent 111, thereby improving the indoor air quality. To improve indoor air quality and enhance user comfort, when ventilation is required, the impeller 122 is activated. At this time, the air outlet 1212 and the second air outlet 131 are closed, while the third air outlet 112 and the fourth air outlet 132 are open. Indoor air is sequentially exhausted outdoors through the third air outlet 112, the air inlet 1211, the impeller 122, the air outlet 1212, the fourth air outlet 132, the ventilation cavity 13, and the fifth air outlet 133, thereby improving indoor air quality, effectively reducing the concentration of harmful gases indoors, and enhancing user comfort.

[0043] By opening and closing the air outlet 1212, the second air outlet 131, the third air outlet 112 and the fourth air outlet 132, the fresh air module 100 can switch between fresh air mode and exhaust mode. Only one ventilation cavity 13 and one fan 12 are needed to form a set of air duct system, which can deliver fresh outdoor air to the room and exhaust indoor stale air in a timely manner. The structure is simple, which reduces costs and volume, reduces the space occupied by the fresh air module 100, and facilitates installation and layout.

[0044] Optionally, the second air vent 131 may be formed on the surface of the volute 121 facing the bottom wall of the outer casing 11.

[0045] In some embodiments, to facilitate the introduction of fresh outdoor air into the room and the exhaust of stale indoor air to the outside, the fresh air module 100 further includes a duct connector 15 disposed on the housing 11. This duct connector 15 communicates with the ventilation cavity 13, meaning that an external fresh air duct (not shown) can be installed on the duct connector 15 to connect the fresh air duct to the ventilation cavity 13. Extending the length of the ventilation cavity 13 via the fresh air duct ensures that the fresh air module 100 can be applied to different areas. The fresh air duct extends outdoors to connect the ventilation cavity 13 with the outdoor environment.

[0046] In some embodiments, rotatable sealing members 16 may be provided at the air outlet 1212, the third air outlet 112, the second air outlet 131 and the fourth air outlet 132 respectively, so that the opening and closing of the air outlet 1212, the third air outlet 112, the second air outlet 131 and the fourth air outlet 132 can be controlled by rotating the sealing members 16.

[0047] In some embodiments, such as Figure 5 and Figure 6As shown in the figure, the fresh air module 100 provided in this application embodiment includes a filter assembly 14, which is disposed inside the housing 11. In the direction of fresh air flow from the second air outlet 131 to the air inlet 1211, that is, in the direction of fresh air flow from the second air outlet 131 to the impeller 122, the filter assembly 14 is located between the second air outlet 131 and the air inlet end of the impeller 122. In this way, the fresh air can be filtered by the filter assembly 14 before passing through the impeller 122, so as to avoid the fresh air being mixed with dust, lint and other impurities. Thus, it can not only ensure the quality of the fresh air entering the room, but also prevent dust, lint and other impurities in the fresh air from adhering to the blades of the impeller 122 and affecting the operation of the impeller 122, thereby helping to ensure the normal operation of the impeller 122.

[0048] When the fresh air module 100 is in fresh air mode, the air outlet 1212 and the second air outlet 131 are open, while the third air outlet 112 and the fourth air outlet 132 are closed. Outdoor fresh air enters the room sequentially through the fifth air outlet 133, the ventilation cavity 13, the second air outlet 131, the filter assembly 14, the air inlet 1211, the impeller 122, the air outlet 1212, and the first air outlet 111. When the fresh air module 100 is in exhaust mode, the air outlet 1212 and the second air outlet 131 are closed, while the third air outlet 112 and the fourth air outlet 132 are open. Indoor air is exhausted to the outside sequentially through the third air outlet 112, the air inlet 1211, the impeller 122, the air outlet 1212, the fourth air outlet 132, the ventilation cavity 13, and the fifth air outlet 133.

[0049] In some embodiments, combined with Figures 6 to 8 As shown, the outer casing 11 has a pull-out opening 113 on the bottom wall along the axial direction of the impeller 122. The bottom wall of the outer casing 11 has a first support member 114 and a second support member 115 protruding. The first support member 114 and the second support member 115 are located on both sides of the pull-out opening 113 and are located inside the outer casing 11.

[0050] Among them, such as Figures 7 to 9 As shown, the first support member 114 has a first inclined rib 1141 protruding from its surface facing the second support member 115, and the first inclined rib 1141 is inclined relative to the bottom wall of the outer shell 11; the second support member 115 has a second inclined rib 1151 protruding from its surface facing the first support member 114, and the second inclined rib 1151 is inclined relative to the bottom wall of the outer shell 11. The filter assembly 14 can be movably and detachably mounted on the first inclined rib 1141 and the second inclined rib 1151 through the pull-out opening 113, and the filter assembly 14 can block the pull-out opening 113, with a portion exposed outside the outer shell 11.

[0051] In other words, this application provides a pull-out opening 113 on the bottom wall of the outer casing 11, and provides a first support member 114 and a second support member 115 protruding from the bottom wall of the outer casing 11. The first support member 114 and the second support member 115 are located on both sides of the pull-out opening 113 and are located inside the outer casing 11. The surface of the first support member 114 facing the second support member 115 has a first inclined rib 1141 that is inclined relative to the bottom wall of the outer casing 11, and the surface of the second support member 115 facing the first support member 114 has a second inclined rib 1151 that is inclined relative to the bottom wall of the outer casing 11. The filter assembly 14 is movably and detachably disposed on the first inclined rib 1141 and the second inclined rib through the pull-out opening 113. On 1151, when the filter assembly 14 is inserted into the housing 11 through the pull-out port 113, the filter assembly 14 blocks the pull-out port 113, and part of the filter assembly 14 is located outside the housing 11. Therefore, when it is necessary to disassemble or install the filter assembly 14, the part of the filter assembly 14 exposed outside the housing 11 can be pulled out to complete the quick disassembly or installation of the filter assembly 14. That is, the operator can perform the disassembly or installation of the filter assembly 14 outside the fresh air module 100 without removing the inspection cover 144 first. The operation is very simple and convenient, greatly simplifying the disassembly or installation process of the filter assembly 14, enabling quick replacement of the filter assembly 14, improving the convenience of filter replacement, and saving time and effort.

[0052] The filter assembly 14 is partially exposed outside the outer casing 11. This can be understood as follows: the filter assembly 14 protrudes from the pull-out opening 113 and is located outside the outer casing 11. The part of the filter assembly 14 located outside the outer casing 11 can serve as a grip, making it easy to hold and pull out the filter assembly 14. Alternatively, it can be understood as follows: the filter assembly 14 does not protrude from the pull-out opening 113 and is located outside the outer casing 11. The filter assembly 14 is not blocked by the outer casing 11 through the pull-out opening 113. In this case, the surface of the filter assembly 14 exposed through the pull-out opening 113 can be provided with a handle groove, so as to hold the groove wall and pull out the filter assembly 14.

[0053] In other words, in some embodiments, such as Figure 7 As shown, the filter assembly 14 is provided with a handle portion 141, which is exposed outside the housing 11. The handle portion 141 may include a handle groove 1411, the opening of which may face away from the fan 12; or, the handle portion 141 may include a grip protrusion 1412; or, the handle portion 141 may include a handle groove 1411 and a grip protrusion 1412, the opening of which may face away from the fan 12, and the grip protrusion 1412 is disposed on the bottom surface of the handle groove 1411.

[0054] The design of the handle groove 1411 and the grip protrusion 1412 allows the operator to easily pull out the filter assembly 14, facilitating the replacement of the filter assembly 14.

[0055] For example, the gripping protrusion 1412 may be a hook structure, a T-shaped structure, etc.

[0056] It should be noted that, in addition to the operator being able to directly hold the buckle groove 1411 or the protrusion 1412 to pull the filter assembly 14 outward, in some special cases, a tool can also be used to clamp and hold the protrusion 1412 before pulling the filter assembly 14 outward.

[0057] In this application, as Figure 8 and Figure 9 As shown, the filter assembly 14 has a first side 14a and a second side 14b, which are arranged along the arrangement direction of the first support member 114 and the second support member 115. The first side 14a is disposed toward the first support member 114, and the second side 14b is disposed toward the second support member 115.

[0058] In some embodiments, the surface of the first support member 114 facing the second support member 115 is further provided with a first guide rib 1142, the first guide rib 1142 is arranged parallel to the first inclined rib 1141, and is spaced apart from the first inclined rib 1141 to form a first guide rail 1143; the first side portion 14a of the filter assembly 14 is movably embedded in the first guide rail 1143.

[0059] The first guide rail 1143 guides the movement of the filter assembly 14 when it is inserted or pulled out, preventing unnecessary deflection, tilting, or shaking. This facilitates easy installation and removal of the filter assembly 14, reducing the difficulty of installation and removal and making it easier to replace the filter assembly 14. Furthermore, since the first side 14a of the filter assembly 14 and the first guide rail 1143 are directly used, without the need for additional guide rail structures on the filter assembly 14, the structure of the filter assembly 14 is relatively simple and cost-effective.

[0060] In addition, since the first guide rail 1143 is formed by the cooperation of the first inclined rib 1141 and the first guide rib 1142, the first inclined rib 1141 is reused, which simplifies the structural design of the first support member 114 and saves costs.

[0061] In some embodiments, combined with Figures 10 to 12As shown, the height of the first inclined rib 1141 protruding relative to the first support member 114 is less than the height of the first guide rib 1142 protruding relative to the first support member 114. The first side portion 14a protrudes from the surface of the first support member 114 with the first rib portion 14a1. The first rib portion 14a1 is located between the first inclined rib 1141 and the first guide rib 1142. Furthermore, the first rib portion 14a1 is movably detachably disposed on the first inclined rib 1141.

[0062] With this design, even when the filter assembly 14 is moved and comes into contact with the first support member 114, it is the first rib portion 14a1 that contacts the first support member 114, rather than the side of the first side portion 14a. By using the first rib portion 14a1 to restrict (prevent) the side of the first side portion 14a from directly contacting the first support member 114, the contact area between the filter assembly 14 and the first support member 114 is reduced, thereby reducing the friction between the filter assembly 14 and the first support member 114, and thus reducing the wear on the filter assembly 14.

[0063] In some embodiments, such as Figure 8 and Figure 9 As shown, the second support member 115 is further provided with a second guide rib 1152 on the surface facing the first support member 114. The second guide rib 1152 is arranged parallel to the second inclined rib 1151 and is spaced apart from the second inclined rib 1151 to form a second guide rail 1153. The second side portion 14b is movably embedded in the second guide rail 1153.

[0064] The second guide rail 1153 guides the movement of the filter assembly 14 during insertion or removal, preventing unnecessary deflection, tilting, or shaking. This facilitates easy installation and removal of the filter assembly 14, reducing the difficulty of assembly and disassembly and making replacement easier. Furthermore, since the filter assembly 14's second side 14b and the second guide rail 1153 are directly used, without additional guide rail structures on the filter assembly 14, the structure of the filter assembly 14 is relatively simple and cost-effective.

[0065] In addition, since the second guide rail 1153 is formed by the cooperation of the second inclined rib 1151 and the second guide rib 1152, the second inclined rib 1151 is reused, which simplifies the structural design of the second support member 115 and saves costs.

[0066] In some embodiments, combined with Figure 10 , Figure 11 and Figure 13As shown, the height of the second inclined rib 1151 protruding relative to the second support member 115 is less than the height of the second guide rib 1152 protruding relative to the second support member 115. The second side portion 14b protrudes from the surface of the second support member 115 with a second rib portion 14b1. The second rib portion 14b1 is located between the second inclined rib 1151 and the second guide rib 1152. Furthermore, the second rib portion 14b1 is movably detachably disposed on the second inclined rib 1151.

[0067] With this design, even when the filter assembly 14 is moved and comes into contact with the second support member 115, it is the second rib portion 14b1 that contacts the second support member 115, rather than the side of the second side portion 14b. By using the second rib portion 14b1 to restrict (prevent) the side of the second side portion 14b from directly contacting the second support member 115, the contact area between the filter assembly 14 and the second support member 115 is reduced, thereby reducing the friction between the filter assembly 14 and the second support member 115, and thus reducing the wear on the filter assembly 14.

[0068] In some embodiments, such as Figure 10 and Figure 14 As shown, the outer casing 11 has an elastic layer 17 on the bottom wall of the impeller 122 in the axial direction, and the elastic layer 17 abuts against the filter assembly 14 in the axial direction of the impeller 122.

[0069] This configuration allows the elastic layer 17 to seal the gap between the filter assembly 14 and the bottom wall of the housing 11, preventing fresh air from leaking out from the pull-out port 113 and thus reducing the amount of fresh air entering the fan 12. This improves the situation where the fresh air module 100 leaks air due to the pull-out port 113 for easy replacement of the filter assembly 14, ensuring the fresh air output of the fresh air module 100.

[0070] Optionally, the elastic layer 17 may be, but is not limited to, a sponge layer, a silicone layer, a plastic layer, a rubber layer, or a foam layer, etc.

[0071] In some embodiments, such as Figure 10 , Figure 14 and Figure 15 As shown, a first baffle 1213 protrudes from the surface of the volute 121 facing the filter assembly 14, and the first baffle 1213 extends along the axial direction of the impeller 122; the filter assembly 14 is provided with a second baffle 142, which extends along the axial direction of the impeller 122, and the second baffle 142 abuts against the first baffle 1213 in the moving direction of the filter assembly 14.

[0072] This design has two advantages. First, compared to the direct surface-to-surface contact between the filter assembly 14 and the volute 121, the staggered arrangement of the first baffle 1213 and the second baffle 142 can better and more effectively prevent fresh air from entering the fan 12 without passing through the filter assembly 14, thereby improving the quality of fresh air entering the room. Second, during the process of inserting the filter assembly 14 into the housing 11 from the pull-out port 113, when the second baffle 142 abuts against the first baffle 1213, if the filter assembly 14 is to be inserted further into the housing 11, it will be unable to be inserted any further. This serves as a reminder to the operator that the filter assembly 14 has been installed correctly.

[0073] For ease of description, this application, as Figure 10 and Figure 14 As shown, the angle between the first inclined rib 1141 and the bottom wall of the outer casing 11 is defined as α. The angle between the second inclined rib and the bottom wall of the outer casing 11 is also α, and the angle between the windward or leeward side of the filter assembly 14 and the bottom wall of the outer casing 11 is also α. It is understood that the above definitions are merely for ease of description and should not be used to limit the scope of protection of this application.

[0074] In some embodiments, 10°≤α≤18°, for example, 10°≤α≤11°, 11°≤α≤12°, 12°≤α≤13°, 13°≤α≤14°, 14°≤α≤15°, 15°≤α≤16°, 16°≤α≤17°, or 17°≤α≤18°, etc. Exemplarily, α = 10°, 10.5°, 11°, 12°, 12.5°, 13°, 13.5°, 14°, 14.5°, 15°, 15.5°, 16°, 16.5°, 17°, 17.5°, or 18°, etc.

[0075] If α < 10°, although a smaller α value results in a larger filtration area and higher filtration efficiency for the filter assembly 14, it also results in a larger space occupied by the filter assembly 14, affecting the installation space of other parts inside the housing 11. The filter assembly 14 may interfere with the second air vent 131, blocking the second air vent 131 and affecting the air volume of the second air vent 131. Alternatively, the filter assembly 14 may interfere with the third air vent 112, blocking the third air vent 112 and affecting the air volume of the third air vent 112.

[0076] If α > 18°, the filtration area of ​​the filter assembly 14 will be smaller, which will affect the filtration efficiency of the filter assembly 14.

[0077] Therefore, when 10°≤α≤18°, the filtration area of ​​the filter assembly 14 can be increased, improving its filtration efficiency; at the same time, the space occupied by the filter assembly 14 can be reduced, avoiding interference between the filter assembly 14 and other components inside the housing 11, such as preventing interference between the filter assembly 14 and the second air vent 131 and the third air vent 112, thus ensuring the ventilation volume of the second air vent 131 and the third air vent 112. In addition, the leeward side of the filter assembly 14 can be positioned slightly towards the air inlet 1211 of the volute 121, facilitating the flow of fresh air after passing through the filter assembly 14 to the air inlet 1211 of the volute 121.

[0078] In some embodiments, combined with Figures 16 to 18 As shown, the outer casing 11 includes a housing 11a, a first panel 11b, and a second panel 11c. The housing 11a has a bottom opening 11a1. The first panel 11b covers the bottom opening 11a1, and the second panel 11c covers the bottom opening 11a1 and is spaced apart from the first panel 11b to form the aforementioned pull-out opening 113. The first panel 11b and the second panel 11c constitute the bottom wall of the outer casing 11. The first support member 114 and the second support member 115 are both formed on the second panel 11c. The filter assembly 14 includes a filter structure 143 and a cover plate 144. The filter structure 143 is movably and detachably mounted on the first inclined rib 1141 and the second inclined rib 1151 through the pull-out opening 113. The cover plate 144 is connected to one end of the filter structure 143 and can block the pull-out opening 113, with a portion exposed outside the outer casing 11.

[0079] In the above structural design, the pull-out opening 113 can be formed by splicing two panels (first panel 11b and second panel 11c), instead of cutting off part of the material from the panel to form the pull-out opening 113, which simplifies the panel processing technology. In addition, since the filter assembly 14 includes not only the filter structure 143 but also a cover plate 144, the cover plate 144 can better cover the pull-out opening 113, thereby improving the sealing performance of the pull-out opening 113, minimizing air leakage at the pull-out opening 113, and minimizing condensation and dripping at the pull-out opening 113 in low temperature and high humidity environments.

[0080] In some embodiments, the cover plate 144 may be detachably connected to the housing 11a by at least one of threaded connection, snap-fit ​​connection and magnetic connection.

[0081] In some embodiments, such as Figure 18As shown, the filter structure 143 may include a filter frame 1431 and a filter screen 1432. The filter screen 1432 is fixedly disposed within the filter frame 1431. By disposing of the filter screen 1432 within the filter frame 1431, the rigidity of the filter frame 1431 can be used to support the filter screen 1432, thereby preventing deformation of the filter screen 1432.

[0082] In some embodiments, such as Figure 16 As shown, the edges of the first panel 11b and the cover plate 144 overlap each other in the axial direction of the impeller 122. By making the edges of the first panel 11b and the cover plate 144 overlap each other, the sealing performance of the connection between the first panel 11b and the cover plate 144 can be enhanced, thereby reducing the probability of air leakage at the connection between the first panel 11b and the cover plate 144 and preventing condensation and dripping at the connection between the first panel 11b and the cover plate 144 in low temperature and high humidity environments.

[0083] In some embodiments, such as Figure 17 As shown, the edges of the second panel 11c and the cover plate 144 overlap each other in the axial direction of the impeller 122. By making the edges of the second panel 11c and the cover plate 144 overlap, the sealing performance at the connection between the second panel 11c and the cover plate 144 can be enhanced, thereby reducing the probability of air leakage at the connection between the second panel 11c and the cover plate 144 and preventing condensation and dripping at the connection between the second panel 11c and the cover plate 144 in low temperature and high humidity environments.

[0084] In other embodiments, the edges of the first panel 11b and the cover plate 144 overlap each other in the axial direction of the impeller 122, and the edges of the second panel 11c and the cover plate 144 overlap each other in the axial direction of the impeller 122.

[0085] In this application, "high humidity environment" refers to an environment with a relative humidity greater than 80%, preferably greater than 90%, and more preferably greater than 95%. Alternatively, "high humidity environment" refers to an environment with a relative humidity range of 85%RH to 100%RH. Here, %RH (Relative Humidity) is a unit of relative humidity that measures the water vapor content in the air, representing the percentage of actual water vapor pressure to saturated water vapor pressure at the same temperature.

[0086] In some embodiments, such as Figure 16As shown, the edge of the first panel 11b extends towards the filter assembly 14 with a first extension 11b1, and the first extension 11b1 extends towards the cover plate 144 with a second extension 11b2. One edge of the cover plate 144 overlaps the second extension 11b2. This design allows for a tight fit between the overlapping portions of the first panel 11b and the cover plate 144, improving the sealing performance at the connection point, while also making the overlapping method of the first panel 11b and the cover plate 144 simple, convenient, and easy to implement.

[0087] In some embodiments, such as Figure 17 As shown, the edge of the second panel 11c extends towards the filter assembly 14 with a third extension 11c1, and the third extension 11c1 extends towards the cover plate 144 with a fourth extension 11c2. The other edge of the cover plate 144 overlaps the fourth extension 11c2. This design allows for a tight fit between the overlapping portions of the second panel 11c and the cover plate 144, improving the sealing performance at the connection between the second panel 11c and the cover plate 144, while also making the overlapping method of the second panel 11c and the cover plate 144 simple, convenient, and easy to implement.

[0088] For ease of description, this application, as Figure 18 and Figure 19 As shown, the diameter of the air inlet 1211 is defined as D, the air inlet area of ​​the air inlet 1211 is defined as S1, and the windward area of ​​the filter assembly 14 is defined as S2, where S1 = (π × D × D) / 4. It is understood that the above definitions are merely for ease of description and should not be used to limit the scope of protection of this application.

[0089] In some embodiments, S1 / 2≤S2≤3S1 / 2, for example, S1 / 2≤S2≤5S1 / 8, 5S1 / 8≤S2≤3S1 / 4, 3S1 / 4≤S2≤7S1 / 8, 7S1 / 8≤S2≤S1, S1≤S2≤9S1 / 8, 9S1 / 8≤S2≤5S1 / 4, 5S1 / 4≤S2≤11S1 / 8, or 11S1 / 8≤S2≤3S1 / 2. For example, S2 = S1 / 2, 9S1 / 16, 5S1 / 8, 11S1 / 16, 3S1 / 4, 13S1 / 16, 7S1 / 8, 15S1 / 16, S1, 17S1 / 16, 9S1 / 8, 19S1 / 16, 5S1 / 4, 21S1 / 16, 11S1 / 8, 23S1 / 16 or 3S1 / 2, etc.

[0090] If S2 < S1 / 2, the windward area of ​​the filter assembly 14 is relatively small, which will result in a smaller airflow into the impeller 122, making it difficult to meet user needs.

[0091] If S2 > 3S1 / 2, the overall structure of the filter assembly 14 is too large, which will affect the installation and replacement of the filter assembly 14, and the maintenance cost of the filter assembly 14 is also relatively high.

[0092] Therefore, when S1 / 2≤S2≤3S1 / 2, it can ensure that the filter assembly 14 has a large filtration area, which can increase the amount of fresh air filtered by the filter assembly 14 per unit time and improve the filtration efficiency of the filter assembly 14; at the same time, it can avoid the overall structure of the filter assembly 14 being too large, making it easier to install and replace the filter assembly 14, and also reducing the maintenance cost of the filter assembly 14.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] Furthermore, the embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the content of this specification should not be construed as a limitation of this application, and the protection scope of this application should be determined by the appended claims.

Claims

1. A ducted air conditioner, characterized in that, The ducted air handling unit includes a fresh air module, which includes: The outer casing has a first air vent. The fan includes: A volute, which is disposed inside the outer shell, has an air inlet and an air outlet; The wind turbine is disposed inside the volute. A ventilation cavity is formed inside the volute. The ventilation cavity has a second air inlet. Fresh outdoor air enters the room sequentially through the ventilation cavity, the second air inlet, the air inlet, the impeller, the air outlet, and the first air inlet. A filter assembly is disposed within the housing, and in the direction of fresh air flow from the second air inlet to the air inlet, the filter assembly is located between the second air inlet and the air inlet; The outer casing has a pull-out opening on the bottom wall along the axial direction of the wind turbine. The bottom wall of the outer casing is provided with a first support member and a second support member. The first support member and the second support member are respectively located on both sides of the pull-out opening and are located inside the outer casing. The first support member has a first inclined rib protruding from its surface facing the second support member, and the first inclined rib is inclined relative to the bottom wall of the outer shell; The second support member has a second inclined rib protruding from its surface toward the first support member, and the second inclined rib is inclined relative to the bottom wall of the outer shell; The filter assembly is movably and detachably mounted on the first inclined rib and the second inclined rib through the pull-out opening, and the filter assembly can block the pull-out opening, with a portion exposed outside the outer shell; The included angle between the first inclined rib and the bottom wall of the outer shell is defined as α, where 10°≤α≤18°.

2. The duct air conditioner according to claim 1, characterized in that, The diameter of the air inlet is D, the air inlet area is S1, and the windward area of ​​the filter assembly is S2. D, S1, and S2 satisfy the following: S1=(π×D×D) / 4; S1 / 2≤S2≤3S1 / 2.

3. The duct air conditioner according to claim 1, characterized in that, The first air vent and / or air outlet are openable and closable, and the second air vent is openable and closable. The outer casing is also provided with an openable and closable third air vent, and the ventilation cavity is also provided with an openable and closable fourth air vent. When the fresh air module is in fresh air mode, the first air vent and / or the air outlet are in the open state, and the second air vent is in the open state, while the third air vent and the fourth air vent are in the closed state. Outdoor fresh air enters the room sequentially through the ventilation cavity, the second air vent, the filter assembly, the air inlet, the impeller, the air outlet, and the first air vent. When the fresh air module is in exhaust mode, the first air vent and / or the air outlet is closed, the second air vent is closed, and the third air vent and the fourth air vent are open. The indoor air is discharged to the outside through the third air vent, the air inlet, the impeller, the air outlet, the fourth air vent, and the ventilation cavity in sequence.

4. The duct air conditioner according to claim 1, characterized in that, The surface of the first support member facing the second support member is further provided with a first guide rib. The first guide rib is arranged parallel to the first inclined rib and is spaced apart from the first inclined rib to form a first guide rail. The second support member is further provided with a second guide rib on the surface facing the first support member. The second guide rib is arranged parallel to the second inclined rib and is spaced apart from the second inclined rib to form a second guide rail. The filter assembly has a first side and a second side, the first side being movably embedded in a first guide rail and the second side being movably embedded in a second guide rail.

5. The duct air conditioner according to claim 1, characterized in that, The outer casing includes: A housing having a bottom opening; A first panel, the first panel being disposed over the bottom opening; and... The second panel is disposed over the bottom opening and is spaced apart from the first panel to form the pull-out opening. Both the first support member and the second support member are formed on the second panel. The filter assembly includes: A filter structure, wherein the filter structure is movably and detachably mounted on the first inclined rib and the second inclined rib through the pull-out opening; and, A cover plate is connected to one end of the filter structure. The cover plate can block the pull-out opening and has a portion exposed outside the outer casing.

6. The duct air conditioner according to claim 5, characterized in that, The edges of the first panel and the cover plate overlap each other along the axial direction of the wind turbine; and / or, The edges of the second panel and the cover plate overlap each other along the axial direction of the wind turbine.

7. The duct air conditioner according to claim 6, characterized in that, The edge of the first panel extends in a direction toward the filter assembly with a first extension portion, and the first extension portion extends in a direction toward the cover plate with a second extension portion, and one edge of the cover plate overlaps the second extension portion. The edge of the second panel extends in a direction toward the filter assembly with a third extension, and the third extension extends in a direction toward the cover with a fourth extension, and the other edge of the cover overlaps the fourth extension.

8. The duct air conditioner according to any one of claims 1-7, characterized in that, An elastic layer is provided on the bottom wall of the outer casing along the axial direction of the impeller, and the elastic layer abuts against the filter assembly along the axial direction of the impeller.

9. The duct air conditioner according to any one of claims 1-7, characterized in that, The volute has a first baffle protruding from its surface facing the filter assembly, and the first baffle extends along the axial direction of the impeller. The filter assembly is provided with a second baffle, which extends along the axial direction of the impeller and abuts against the first baffle in the direction of movement of the filter assembly.

10. The ductwork unit according to any one of claims 1-7, characterized in that, The filter assembly is provided with a handle portion, which is exposed outside the housing. The handle portion includes a handle groove and / or a grip protrusion.

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