Duct type air conditioner filter screen assembly and duct type air conditioner

Abstract

The utility model discloses a duct type air conditioner filter screen assembly and a duct type air conditioner. The duct type air conditioner filter screen assembly comprises a connecting piece and a filter screen, the connecting piece comprises a first sliding seat and a second sliding seat which are rotationally connected, and the first sliding seat is connected with the side wall of the air inlet side of a shell of a duct type air conditioner; the edge of one side of the filter screen is connected with a sliding plate; the sliding plate is in sliding connection with the second sliding seat; when the filter screen is turned inwards to cover and is clamped on the air inlet side of the shell of the duct type air conditioner, the second sliding seat is perpendicular to the first sliding seat; when a worker needs to maintain the duct type air conditioner, the filter screen is turned over, and when the filter screen is turned over outwards to enable the second sliding base and the first sliding base to be located on the same plane, the sliding plate can penetrate through the second sliding base in a sliding mode and is connected with the first sliding base in a sliding mode at the same time, so that the filter screen can be stored on the outer side of a shell of the duct type air conditioner.

Description

Technical Field

[0001] The utility model relates to the technical field of duct machines, in particular to a duct machine filter assembly and a duct machine. Background Art

[0002] In daily use, the evaporator of the ducted air conditioner is prone to dust accumulation due to the adhesion of environmental dust. This dust will not only block the fins of the evaporator, reducing the air circulation efficiency between the fins, but also affect the heat exchange performance of the evaporator, resulting in a decrease in the heat exchange efficiency of the indoor unit. Over a long period of time, this blockage and reduced heat exchange efficiency will not only affect the use of the air conditioner, but may also increase the energy consumption of the air conditioner, further increasing the energy burden.

[0003] In order to solve this problem, the common practice at present is to set a detachable filter at the air inlet of the indoor unit of the duct machine. This filter can effectively filter out most of the dust entering the indoor unit, thereby reducing the dust accumulation of the evaporator and ensuring its normal operation. However, in practical applications, there are some inconveniences in the installation and removal of this filter. In the existing technology, the installation of the filter usually requires adding side plates or guide grooves to the unit, which not only increases the complexity and cost of production, but also requires the filter to be completely removed when repairing the indoor unit of the duct machine. The steps are cumbersome and increase the difficulty of operation for the staff. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the maintenance of the duct machine requires the cumbersome steps of completely disassembling the filter screen, the utility model provides a duct machine filter screen assembly and a duct machine.

[0005] The technical solution adopted by the utility model is:

[0006] The utility model proposes a duct filter assembly, comprising:

[0007] A connecting member, the connecting member comprising: a first sliding seat and a second sliding seat which are rotatably connected, wherein the first sliding seat is connected to a side wall of a housing on an air inlet side of the air duct machine;

[0008] A filter screen, one side edge of the filter screen is connected to one end of a sliding plate, the sliding plate is parallel to the mesh surface of the filter screen and extends to the other side edge of the filter screen, and the sliding plate is slidably connected to the second sliding seat;

[0009] When the filter is flipped inward to cover and clamped on the air inlet side of the shell of the duct machine, the second sliding seat is perpendicular to the first sliding seat; when the filter is flipped outward so that the second sliding seat and the first sliding seat are in the same plane, the sliding plate can slide through the second sliding seat and be slidably connected to the first sliding seat at the same time, so that the filter can be stored outside the shell of the duct machine.

[0010] Furthermore, the first sliding seat is connected to the inner wall of the air inlet side of the air duct housing.

[0011] Furthermore, the first sliding seat is arranged on the inner wall of the upper cover plate on the air inlet side of the shell of the air duct machine.

[0012] Furthermore, at least one group of the duct air conditioner filter screen components is arranged on the air inlet side edge of the duct air conditioner shell to clamp the filter screen and is a limiting component.

[0013] Furthermore, the limiting assembly includes: two limiting members respectively arranged on opposite sides of the air inlet side of the shell, the limiting member includes a connecting portion and a clamping portion, one end of the connecting portion is connected to the side of the air inlet side of the shell, and the other end of the clamping portion extends a clamping portion with an arc, and the filter net is clamped between the two limiting members.

[0014] Furthermore, the first sliding seat and the second sliding seat have the same structure, and one side surface thereof is provided with an inwardly concave sliding groove, and the sliding plate is inserted into the sliding groove from the end surfaces of the first sliding seat and the second sliding seat to be slidably connected therewith.

[0015] Furthermore, the first sliding seat and the second sliding seat are connected via a hinge.

[0016] Furthermore, the two limiting members are respectively arranged on the upper and lower sides of the air inlet side of the shell of the air duct machine.

[0017] Furthermore, a frame is provided around the filter screen, a protrusion is provided on the frame at the bottom, and one end of the sliding plate is connected to the protrusion.

[0018] The utility model also provides an air duct machine, comprising the air duct machine filter assembly.

[0019] Compared with the prior art, the utility model proposes a duct machine filter assembly, including a connector and a filter, the connector including: a first sliding seat and a second sliding seat that are rotatably connected, wherein the first sliding seat is connected to the side wall of the air inlet side of the shell of the duct machine; a sliding plate is connected to the edge of one side of the filter, and the sliding plate is slidably connected to the second sliding seat; when the filter is flipped inward to cover and clamped on the air inlet side of the shell of the duct machine, the second sliding seat is perpendicular to the first sliding seat; when the staff needs to repair the duct machine, the filter is flipped outward so that the second sliding seat is in the same plane as the first sliding seat, and the sliding plate can slide through the second sliding seat and be slidably connected to the first sliding seat at the same time, so that the filter can be stored outside the shell of the duct machine. The duct machine components can be repaired without disassembling the filter, which solves the problem that the staff of the prior art need to disassemble the filter during maintenance, and the operation process is cumbersome. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the prior art of the utility model;

[0022] Figure 2 It is another prior art schematic diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the first state of the filter assembly of the duct machine of the utility model;

[0024] Figure 4 This is a front view of the filter assembly of the air duct machine of the utility model in the first state;

[0025] Figure 5 This is a side view of the filter assembly of the air duct machine of the utility model in the first state;

[0026] Figure 6 This is a side view of the filter assembly of the air duct machine of the utility model in the second state;

[0027] Figure 7 for Figure 6 Cross-sectional view at AA;

[0028] Figure 8 Schematic diagram of the first sliding seat of the utility model embodiment

[0029] Fig. 9 This is a front view of the first sliding seat of the embodiment of the utility model;

[0030] Fig.10 This is a schematic diagram of the first hinged portion of an embodiment of the utility model;

[0031] Fig.11 This is a schematic diagram of the installation of the protrusion and the filter screen in the embodiment of the utility model;

[0032] Fig.12 This is a schematic diagram of a duct machine according to an embodiment of the utility model;

[0033] Fig.13 This is a schematic diagram of the installation of a duct machine filter assembly and a duct machine according to an embodiment of the utility model;

[0034] Fig.14 It is a schematic side view of the duct machine filter assembly and duct machine installation according to an embodiment of the utility model.

[0035] 001, duct machine; 002, filter;

[0036] 01. Shell; 02. Upper cover; 03. Lower cover;

[0037] 1. Filter;

[0038] 11. Sliding plate; 12. First sliding seat;

[0039] 121, slide groove; 122, installation groove;

[0040] 13. first hinge portion; 131. connecting hole;

[0041] 15. second sliding seat; 16. second hinged portion; 17. convex block;

[0042] 18. Limiting parts. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0045] like Figure 1-2As shown in the figure, the evaporator of the ducted air conditioner is prone to dust accumulation due to the adhesion of environmental dust in daily use. This dust will not only block the fins of the evaporator, reducing the air circulation efficiency between the fins, but also affect the heat exchange performance of the evaporator, resulting in a decrease in the heat exchange efficiency of the indoor unit. Over a long period of time, this blockage and reduced heat exchange efficiency will not only affect the use effect of the air conditioner, but may also increase the energy consumption of the air conditioner, further increasing the energy burden.

[0046] In order to solve this problem, the common practice at present is to set a detachable filter 002 at the air inlet of the duct machine 001 of the indoor unit. This filter 002 can effectively filter out most of the dust entering the indoor unit, thereby reducing the dust accumulation of the evaporator and ensuring its normal operation. However, in practical applications, the installation and removal of this filter 002 are somewhat inconvenient. In the existing technology, the installation of the filter 002 usually requires the addition of side plates or guide grooves and other components to the unit, which not only increases the complexity and cost of production, but also requires the filter 002 to be completely disassembled when the indoor unit of the duct machine 001 is repaired, and the steps are cumbersome, which increases the difficulty of operation for the staff.

[0047] like Figure 3-5 As shown, the utility model proposes a duct air conditioner filter assembly, comprising: a filter 1, a sliding plate 11 and a connecting piece.

[0048] The connecting member includes a first sliding seat 12 and a second sliding seat 15. The first sliding seat 12 is connected to the side wall of the air duct housing 01 on the air inlet side. The first sliding seat 12 and the second sliding seat 15 are rotatably connected by a hinge, and an angle between the first sliding seat 12 and the second sliding seat 15 can be formed between 90 degrees and 180 degrees. A sliding plate 11 is provided on one side edge of the filter screen 1, and one end of the sliding plate 11 is connected to the edge of the filter screen 1. The sliding plate 11 is parallel to the filter screen 1 and extends to the other side of the filter screen. The sliding plate 11 is connected to the second sliding seat 15.

[0049] like Figure 3-5 As shown, when the filter 1 is flipped into the duct machine to cover and be clamped on the air inlet side of the shell 01 of the duct machine, the first sliding seat 12 and the second sliding seat 15 are vertical. At this time, the filter 1 covers and is clamped on the air inlet side of the shell 01 of the duct machine, preventing dust in the air from being sucked into the shell 01 of the duct machine and causing damage to the electrical components inside the shell 01 of the duct machine.

[0050] like Figure 6-7As shown, the filter 1 is rotated and flipped outward. Since the first sliding seat 12 and the second sliding seat 15 are rotatably connected, the filter 1 will rotate with the second sliding seat 15, and the angle between the first sliding seat 12 and the second sliding seat 15 will gradually increase. When the first sliding seat 12 and the second sliding seat 15 are in the same plane, the filter 1 is pushed, and the sliding plate 11 can slide through the second sliding seat 15 and be slidably connected with the first sliding seat 12, so that the filter 1 can be stored outside the housing 01 of the air duct machine. Since the sliding plate 11 and the filter 1 are parallel, there is a gap between them. When the filter 1 is stored on the outer wall of the housing 01 of the air duct machine, the sliding plate 11 is inside the housing 01 of the air duct machine, and the filter 1 is plugged into the outer wall of the housing 01 of the air duct machine. When the staff replaces the filter assembly, they only need to rotate the filter 1 covering and clamped on the air inlet side of the air duct machine housing 01 outward to form an angle of 180 degrees between the first sliding seat 12 and the second sliding seat 15, push the filter 1 along the air duct machine housing 01, and the sliding plate 11 can slide through the second sliding seat 15 and slide with the first sliding seat 12 at the same time, so that the filter 1 can be stored outside the housing 01 of the air duct machine, which is convenient for the staff to perform maintenance and other operations. After maintenance, the filter 1 stored in the outer wall of the air duct machine housing 01 is pulled out in the opposite direction of the air duct machine until the sliding plate 11 is separated from the first sliding seat 12, the second sliding seat 15 can be bent 90 degrees with the first sliding seat 12, and the filter 1 can be covered and clamped on the air inlet side of the air duct machine housing 01 again.

[0051] In a specific embodiment, the filter screen 1 is rectangular, and a circle of frames are provided around the filter screen 1 for supporting the filter screen 1. A protrusion 17 is provided on the bottom edge frame on the inner side of the filter screen 1 (towards the air inlet side of the air duct), and the protrusion 17 and the frame are connected by screws. The sliding plate 11 is in the shape of a long strip, and its bottom end is connected to the protrusion 17 by screws. The protrusion 17 leaves a gap between the sliding plate 11 and the filter screen 1.

[0052] like Figure 8-9 As shown, the connecting member includes a first sliding seat 12 and a second sliding seat 15. The first sliding seat 12 and the second sliding seat 15 have the same structure, and the first sliding seat 12 and the second sliding seat 15 are rotatably connected by a hinge, so that they can rotate to form an angle of 90 degrees to 180 degrees. The first sliding seat 12 is rectangular, and one side thereof is provided with an inwardly concave slide groove 121 for sliding connection with the connecting member. The width section of the slide groove 121 gradually decreases from the inside to the outside, and the cross section of the slide groove 121 is dovetail-shaped. The first sliding seat 12 can be slidably connected with the sliding plate 11 through the slide groove 121. The sliding plate is inserted into the slide groove from the end faces of the first sliding seat and the second sliding seat and is slidably connected thereto. A rectangular mounting groove 122 is provided on the side of the first sliding seat 12 opposite to the slide groove 121 for mounting a hinge. The second sliding seat 15 has the same structure as the first sliding seat 12, and will not be repeated here.

[0053] like Figure 3-7 As shown in Figure 12, the first sliding seat 12 is provided with a side surface of the slide groove 121 and is fixed to the inner wall of the upper cover plate 02 on the air inlet side of the air duct machine housing 01 by screws, and the first sliding seat 12 is located at the air inlet side edge of the housing 01 of the air duct machine. The angle between the first sliding seat 12 and the second sliding seat 15 is 90 degrees. At this time, the top of the sliding plate 11 is slidably connected with the second sliding seat 15, so that the filter 1 covers and is clamped on the air inlet side of the air duct machine housing 01. The filter 1 is turned outward from the bottom edge, and an angle of 180 degrees is formed between the second sliding seat 15 and the first sliding seat 12. The filter 1 is pushed toward the air duct machine housing 01. The sliding plate 11 can slide through the second sliding seat 15 and is slidably connected with the first sliding seat 12 at the same time, so that the filter 1 can be stored outside the housing 01 of the air duct machine. Since the sliding plate 11 and the filter screen 1 are parallel with a gap therebetween, when the filter screen 1 covers the outer wall of the housing 01 of the duct machine, the sliding plate 11 is inside the housing 01 of the duct machine.

[0054] like Figure 13-14 As shown, when the staff is repairing the air duct machine, the filter 1 is turned outward from the bottom edge, and the second sliding seat 15 and the first sliding seat 12 form an angle of 180 degrees, and the filter 1 is pushed toward the air duct machine housing 01. The sliding plate 11 can slide through the second sliding seat 15 and is slidably connected with the first sliding seat 12, so that the filter 1 can be stored outside the housing 01 of the air duct machine. After the maintenance, the staff pulls the filter 1 out to the air inlet side of the air duct machine until the first sliding seat 12 and the sliding plate 11 are removed, and rotates the filter 1 inward. The angle between the first sliding seat 12 and the second sliding seat 15 gradually becomes 90 degrees, and the filter 1 is covered on the air inlet side of the air duct machine housing 01 again. Compared with the existing filter, the filter 1 only needs to be turned over to repair the internal unit of the air duct machine, which solves the problem that the existing filter staff need to completely disassemble the filter when repairing the air duct machine, which is a cumbersome process. Furthermore, the first sliding seat 12 is arranged on the inner wall of the housing 01 so that the filter screen 1 can be installed in a hidden manner, which is more aesthetically pleasing.

[0055] like Fig.11 As shown, a limiting convex portion is provided at the top of the sliding plate 11 to prevent the second sliding seat 15 from sliding off the sliding plate 11 and causing the filter 1 to fall off. The convex portion only serves as a limit, and the sliding plate 11 and the second sliding seat 15 can be separated under force, so that it is convenient to first install the connector and the air duct housing 01, and then connect the sliding plate 11 and the second sliding seat 15.

[0056] like Fig.12As shown, the duct air filter assembly also includes at least one set of limiter assemblies arranged on the air inlet side edge of the duct air filter housing 01 for limiting the filter 1. The limiter assembly includes two limiters 18, each of which is composed of a connecting portion and a clamping portion. The connecting portion is in the shape of a rectangular plate, one end of which is connected to the side of the air inlet side of the housing 01, and the other end extends out a curved clamping portion. The filter 1 is clamped in the connecting portion between the two limiters 18, so that the filter 1 can be prevented from falling off or shifting when impacted by wind flow, thereby improving the safety and reliability of the filter 1.

[0057] The two stoppers 18 of the stopper assembly are respectively arranged on the upper and lower sides of the air outlet side of the air duct housing 01, clamping the upper and lower sides of the filter 1. The stopper assembly can be arranged in multiple groups to better connect the filter 1 and its frame. In this embodiment, two groups of stopper assemblies are arranged at intervals, respectively located on the left and right sides of the installation place of the first sliding seat 12, and the first stopper 18 and the second stopper 18 of each group of stopper assemblies are respectively arranged at the edges of the upper cover plate 02 and the lower cover plate 03 on the air inlet side of the air duct housing 01.

[0058] The edges of the upper cover plate 02 and the lower cover plate 03 on the air inlet side of the existing air duct housing 01 are respectively provided with folded edges, and notches are respectively provided on the folded edges of the upper cover plate 02 and the lower cover plate 03. The notches of the folded edges of the upper cover plate 02 correspond to the first sliding seat 12, so that the first sliding seat 12 can be installed on the inner wall of the upper cover plate 02. The first sliding seat 12 is connected to the inner wall of the upper cover plate 02 of the air duct housing 01 through the notches of the folded edges of the upper cover plate 02 by screws. The notches at the folded edges of the lower cover plate 03 correspond to the sliding plate 11, making way for the sliding plate 11, so that the sliding plate 11 is inserted into the air duct housing 01 from the notches, so that the edge of the filter screen 1 is in contact with the air inlet side of the air duct housing 01.

[0059] like Figure 6-7 As shown in FIG. 10 , the first sliding seat 12 and the second sliding seat 15 are connected by a hinge, and the hinge includes a first hinge portion 13 and a second hinge portion 16. The first hinge portion 13 and the second hinge portion 16 have the same structure. Here, the first hinge portion 13 is used to illustrate its structure. The first hinge portion 13 is in the shape of a rectangular plate, and one end of the first hinge portion 13 extends out of one end and is provided with a circular connecting hole 131 on one side. The end of the first hinge portion 13 without the connecting hole 131 is connected to the mounting groove 122 of the first sliding seat 12, and the end of the second hinge portion 16 without the connecting hole 131 is connected to the mounting groove 122 of the second sliding seat 15. The connecting holes 131 of the first hinge portion 13 and the second hinge portion 16 are spliced, and the connecting rod passes through the two connecting holes 131 at the same time, so that the first hinge portion 13 and the second hinge portion 16 can rotate relative to each other, so that the first sliding seat 12 and the second sliding seat 15 can rotate relative to each other.

[0060] like Figure 13-14 As shown, the utility model also provides a duct machine, including the duct machine filter assembly of the utility model. When the duct machine is repaired, it is only necessary to flip the filter 1 and push it to repair the internal electrical components of the duct machine through the air inlet side, and it is no longer necessary to disassemble the filter 1 as a whole, so the operation becomes simple and quick, and the duct machine filter assembly of the present application does not need to be provided with side plates or guide grooves and other components, reducing the complexity and cost of production.

[0061] Compared with the prior art, the utility model proposes a duct machine filter assembly, including a connector and a filter 1, the connector including: a first sliding seat 12 and a second sliding seat 15 that are rotatably connected, wherein the first sliding seat 12 is connected to the side wall of the air inlet side of the housing 01 of the duct machine; a sliding plate 11 is connected to the edge of one side of the filter 1, and the sliding plate 11 is slidably connected to the second sliding seat 15; when the filter 1 is flipped inward to cover and clamped on the air inlet side of the housing 01 of the duct machine, the second sliding seat 15 is perpendicular to the first sliding seat 12; when the staff needs to repair the duct machine, the filter 1 is flipped, and when the filter 1 is flipped outward so that the second sliding seat 15 and the first sliding seat 12 are in the same plane, the sliding plate 11 can slide through the second sliding seat 15 and slide with the first sliding seat 12 at the same time, so that the filter 1 can be stored outside the housing 01 of the duct machine. The duct machine components can be repaired without disassembling the filter 1, which solves the problem that the staff of the prior art need to disassemble the filter 1 during maintenance, and the operation process is cumbersome.

[0062] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0064] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A duct filter assembly, characterized in that: include: A connecting member, the connecting member comprising: a first sliding seat and a second sliding seat which are rotatably connected, wherein the first sliding seat is connected to a side wall of a housing on an air inlet side of the air duct machine; A filter screen, one side edge of the filter screen is connected to one end of a sliding plate, the sliding plate is parallel to the mesh surface of the filter screen and extends to the other side edge of the filter screen, and the sliding plate is slidably connected to the second sliding seat; When the filter is flipped inward to cover and clamped on the air inlet side of the shell of the duct machine, the second sliding seat is perpendicular to the first sliding seat; when the filter is flipped outward so that the second sliding seat and the first sliding seat are in the same plane, the sliding plate can slide through the second sliding seat and be slidably connected to the first sliding seat at the same time, so that the filter can be stored outside the shell of the duct machine.

2. The air duct filter assembly according to claim 1, characterized in that: The first sliding seat is connected to the inner wall of the air inlet side of the air duct housing.

3. The air duct filter assembly according to claim 2, characterized in that: The first sliding seat is arranged on the inner wall of the upper cover plate on the air inlet side of the shell of the air duct machine.

4. The air duct filter assembly according to claim 1, characterized in that: At least one group of the air duct machine filter screen components is arranged on the air inlet side edge of the shell of the air duct machine and is used for clamping the limiting component of the filter screen.

5. The air duct filter assembly according to claim 4, characterized in that: The limiting assembly includes: two limiting members respectively arranged on opposite sides of the air inlet side of the shell, the limiting member includes a connecting portion and a clamping portion, one end of the connecting portion is connected to the side of the air inlet side of the shell, and the other end of the clamping portion extends a clamping portion with an arc, and the filter is clamped between the two limiting members.

6. The air duct filter assembly according to claim 1, characterized in that: The first sliding seat and the second sliding seat have the same structure, and one side surface of the first sliding seat is provided with an inwardly concave sliding groove. The sliding plate is inserted into the sliding groove from the end surfaces of the first sliding seat and the second sliding seat and is slidably connected therewith.

7. The air duct filter assembly according to claim 1, characterized in that: The first sliding seat and the second sliding seat are connected via a hinge.

8. The air duct filter assembly according to claim 5, characterized in that: The two stoppers are respectively arranged on the upper and lower sides of the air inlet side of the shell of the air duct machine.

9. The air duct filter assembly according to claim 1, characterized in that: A frame is arranged around the filter screen, a convex block is arranged on the frame at the bottom, and one end of the sliding plate is connected to the convex block.

10. A duct machine, characterized in that: It comprises the duct filter assembly as described in any one of claims 1 to 9.

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