Filtering device, air conditioning system and control method

Abstract

The application relates to a filtering device, an air conditioning system and a control method, comprising: a support assembly having a first working area and a second working area, the second working area being aligned with an external air inlet; and a filtering screen assembly comprising a first filtering screen and a second filtering screen movably arranged on the support assembly respectively; the filtering device has a first state and a second state; in the first state, the first filtering screen covers the first working area, and the second filtering screen covers the second working area; in the second state, the first filtering screen covers the second working area, and the second filtering screen is located outside the support assembly. The filtering device, the air conditioning system and the control method provided by the application have the advantages of safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, in particular to a filter device, an air conditioning system and a control method. BACKGROUND

[0002] With the development of air conditioning technology, a filter screen is generally arranged at the air outlet of an air conditioner to prevent impurities and dust from entering the interior of the air conditioner and causing the air conditioner to fail.

[0003] At present, the filter screen in the indoor unit of an air conditioner is mostly fixed in the air outlet by buckles or screws. As the air conditioner is frequently used, the filter screen will be continuously filtered, which will weaken the filtering effect and even completely block the air outlet. Therefore, the filter screen needs to be regularly replaced or cleaned.

[0004] Since the filter screen of the current air conditioning system is directly detached from the air outlet, the air conditioning system needs to be powered off during the replacement and maintenance of the filter screen, and the filter screen can only be replaced by an operator after the air conditioning unit stops running. However, when the air conditioning unit is in a running environment that needs to be continuously operated, the filter screen cannot be replaced by powering off, which poses a safety risk to the operator. SUMMARY

[0005] Based on this, the present application provides a filter device, an air conditioning system and a control method, which can improve the current unsafe situation of filter screen maintenance and replacement.

[0006] The first aspect of the present application provides a filter device, comprising: a bracket assembly having a first working area and a second working area, the second working area being aligned with an external air outlet; and a filter screen assembly comprising a first filter screen and a second filter screen movably arranged on the bracket assembly, respectively; the filter device has a first state and a second state; the first state is configured such that the first filter screen covers the first working area and the second filter screen covers the second working area; the second state is configured such that the first filter screen covers the second working area and the second filter screen is located outside the bracket assembly.

[0007] In one embodiment, the filter device comprises a limiting assembly capable of limiting the filter screen assembly; when the limiting assembly stops limiting, the filter device can be switched between the first state and the second state.

[0008] In one embodiment, when the limiting assembly stops limiting, the second filter screen can move from the second working area to outside the bracket assembly under the action of gravity.

[0009] In one of the embodiments, the support assembly comprises a fixed frame and an inner support frame; the fixed frame is surrounded by the first working area and the second working area; the inner support frame is arranged on the fixed frame; the filter screen assembly is arranged on the fixed frame by the inner support frame.

[0010] In one of the embodiments, the fixed frame comprises a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod and a sixth support rod connected head to tail;

[0011] The second support rod, the third support rod and the fourth support rod are in a first plane and surrounded by the first working area; the fifth support rod, the sixth support rod and the first support rod are in a second plane and surrounded by the second working area.

[0012] In one of the embodiments, the inner support frame comprises two groups of guide rails, one group of the guide rails is arranged on the first support rod and the second support rod, and the other group of the guide rails is arranged on the fourth support rod and the fifth support rod; the first filter screen and the second filter screen are arranged between the two groups of the guide rails respectively.

[0013] In one of the embodiments, the second plane is a vertical plane; the first plane and the second plane are arranged at an angle.

[0014] In one of the embodiments, the guide rail is formed with a guide rail groove, and the guide rail groove is open at an end of the guide rail away from the third support rod;

[0015] When the filter device is switched from the first state to the second state, the first filter screen slides along the guide rail groove from the first working area to the second working area, and the second filter screen moves along the guide rail groove from the second working area to the outside of the area surrounded by the fixed frame through the opening.

[0016] In one of the embodiments, the filter screen assembly comprises a connecting piece; the connecting piece is hingedly connected with the first filter screen and the second filter screen respectively.

[0017] In one of the embodiments, the first filter screen comprises a first fixed frame and a first body, the first body is detachably embedded in the first fixed frame; the connecting piece is hingedly connected with the first fixed frame; the filter device is in the second state, and the limiting assembly is limited with the first fixed frame.

[0018] In one of the embodiments, the second filter screen comprises a second fixed frame and a second body, the second body being detachably embedded in the first fixed frame; the connecting piece is hinged to the second fixed frame; in the first state of the filtering device, the limiting assembly is limited with the second fixed frame.

[0019] In one of the embodiments, the support assembly comprises a connecting seat with a first mounting portion, the connecting seat being fixedly connected to the inner support frame; the limiting assembly comprises a driving portion and a rotating rod; the rotating rod comprises a rod body and a first connecting portion provided on the rod body, one end of the rod body being formed with a third limiting portion, the first connecting portion being hinged to the first mounting portion; the driving portion is capable of driving the rod body to rotate around the first mounting portion.

[0020] In one of the embodiments, in the first state of the filtering device, the third limiting portion is limitedly matched with the second filter screen; in the second state of the filtering device, the third limiting portion is limitedly matched with the first filter screen.

[0021] In one of the embodiments, the connecting seat has a second mounting portion; the rotating rod comprises a second connecting portion, the second connecting portion being provided on the other end of the rod body away from the third limiting portion; the driving portion is an electromagnetic switch, one end of the driving portion being hinged to the second mounting portion, the other end of the driving portion being hinged to the second connecting portion.

[0022] In one of the embodiments, the rotating rod comprises a poking rod provided on the rod body; the poking rod can be poked to drive the rod body to rotate around the first mounting portion.

[0023] In one of the embodiments, the support assembly comprises a cover plate covering the fixed frame, the cover plate being formed with a frame opening, the frame opening exposing at least a part of the second working area.

[0024] The second aspect of the present application provides an air conditioning system comprising the filtering device.

[0025] The third aspect of the present application provides a control method applied to the air conditioning system; the control method comprises: acquiring a sensing signal; determining whether the second filter screen (22) needs to be replaced based on the sensing signal; if yes, controlling the limiting assembly (40) to stop limiting, the filtering device being switched from the first state to the second state; starting a reminder.

[0026] In one of the embodiments, the step of determining whether the second filter screen (22) needs to be replaced based on the sensing signal specifically comprises: converting the sensing signal into an actual value of a corresponding parameter; calling a theoretical range of the parameter; if the actual value of the parameter is within the theoretical range, determining that the second filter screen (22) needs to be replaced; otherwise, determining that the second filter screen (22) does not need to be replaced.

[0027] The beneficial effects are:

[0028] The filter device, the air conditioning system and the control method provided by the present application set a support assembly and a filter screen assembly; the support assembly has a first working area and a second working area, and the second working area is aligned with an external air inlet; the filter screen assembly includes a first filter screen and a second filter screen which are movably arranged on the support assembly; wherein the filter device has a first state and a second state; in the first state, the filter device is in a normal state, the first filter screen is used as a spare part and covers the first working area, and the second filter screen covers the second working area and is aligned with the air inlet to prevent impurities and dust from entering;

[0029] In the second state, the filter device, the first filter screen covers the second working area and is aligned with the air inlet, and the second filter screen moves out of the support assembly; since the support assembly is fixedly connected with the surrounding wall of the air inlet, that is, in the second state, the second filter screen is away from the air inlet; therefore, even if the air conditioning system is still in a working state, the air flowing through the air inlet can be filtered by the first filter screen to prevent impurities and dust from entering, so that the air conditioning system does not need to be shut down, and the second filter screen can be replaced, especially for the environment where the air conditioning system needs to be continuously operated, which not only meets the non-stop of the air conditioning system, but also effectively ensures the safety of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a structural schematic diagram of an air conditioning system according to an embodiment of the present application, wherein a filter device is in a first state.

[0031] Figure 2 FIG. 2 is a structural schematic diagram of an air conditioning system according to an embodiment of the present application, wherein a filter device is in an intermediate state from the first state to a second state.

[0032] Figure 3 FIG. 3 is an internal sectional view of an air conditioning system according to an embodiment of the present application, wherein a filter device is in an intermediate state from the first state to a second state.

[0033] Figure 4 FIG. 4 is a structural schematic diagram of an air conditioning system according to an embodiment of the present application, wherein a filter device is in a second state.

[0034] Figure 5 A structural schematic view of a filter device according to an embodiment of the present application, wherein the filter device is in a second state.

[0035] Figure 6 An exploded view of a filter device according to an embodiment of the present application.

[0036] Figure 7 A structural schematic view of a support assembly according to an embodiment of the present application.

[0037] Figure 8 A structural schematic view of a fixing frame according to an embodiment of the present application.

[0038] Figure 9 A side view of a fixing frame according to an embodiment of the present application.

[0039] Figure 10 A front view of a fixing frame according to an embodiment of the present application.

[0040] Figure 11 A structural schematic view of an inner support frame according to an embodiment of the present application.

[0041] Figure 12 A side view of an inner support frame according to an embodiment of the present application.

[0042] Figure 13 A front view of an inner support frame according to an embodiment of the present application.

[0043] Figure 14 A structural schematic view of a rotating rod according to an embodiment of the present application.

[0044] Figure 15 A front view of a rotating rod according to an embodiment of the present application.

[0045] Figure 16 A structural schematic view of a filter screen assembly according to an embodiment of the present application.

[0046] Figure 17 An internal structural sectional view of a filter screen assembly according to an embodiment of the present application.

[0047] Figure 18 A structural schematic view of a connecting piece according to an embodiment of the present application.

[0048] Figure 19 A structural schematic view of a first fixing frame according to an embodiment of the present application.

[0049] Figure 20 A front view of a first fixing frame according to an embodiment of the present application.

[0050] Figure 21 A structural schematic view of a roller according to an embodiment of the present application.

[0051] Figure 22Structure schematic view of the cover plate of the embodiment of the present application.

[0052] Figure 23 Structure schematic view of the air conditioning system of the embodiment of the present application, wherein the filtering device is in the first state.

[0053] Figure 24 Flow chart of the control method of the embodiment of the present application.

[0054] Explanation of reference signs:

[0055] Filtering device-100, support assembly-10, first working area-11, second working area-12, fixing frame-13, first supporting rod-131, second supporting rod-132, third supporting rod-133, fourth supporting rod-134, fifth supporting rod-135, sixth supporting rod-136, inner support frame-14, guide rail-141, guide rail groove-142, opening-143, connecting seat-15, first mounting part-151, second mounting part-152, cover plate-16, frame opening-161, filtering screen assembly-20, first filtering screen-21, first fixing frame-211, first body-212, second filtering screen-22, second fixing frame-221, second body-222, connecting piece-23, limiting assembly-40, driving part-41, rotating rod-42, rod body-421, first connecting part-422, second connecting part-423, third limiting part-424, pushing rod-425, air conditioning system-900, air outlet-910. DETAILED DESCRIPTION

[0056] The embodiments of the technical solutions of the present application will be described in detail below in combination with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0057] 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 the present application belongs; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0058] In the description of the embodiments of the present application, if these technical terms "first", "second", etc. appear, these terms are only for the purpose of description, to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the technical features indicated.

[0059] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments in accordance with the application.

[0060] In the description of the embodiments of the present application, the term“and / or” is merely used to describe an associated relationship between associated objects, and indicates that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally indicates that the front and rear associated objects are in an“or” relationship.

[0061] In the description of the embodiments of the present application, if the term“plurality” appears, the meaning of“plurality” is at least two (including two), for example, two, three, etc., unless otherwise explicitly specified. Similarly, if the term“multiple groups” appears, it means two groups or more (including two groups), and if the term“multiple pieces” appears, it means two pieces or more (including two pieces).

[0062] In the description of the embodiments of the present application, if these terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, if technical terms such as“mounting”,“connection”,“connection”,“fixing” and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0064] In the present application, unless specifically defined otherwise, if there is a description of a first feature on a second feature, or similar descriptions, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be above, above and above, and above the second feature, which can be directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature can be below, below and below, and below the second feature, which can be directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0065] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0066] The first aspect of the embodiments of the present application provides a filtering device 100, which is applied to an air conditioning system 900, which generally includes a controller, an air outlet 910 and a fan 920, and the filtering device 100 is arranged on the air outlet 910.

[0067] Referring to Figures 1 to 23 As shown in the drawings, the filtering device 100 includes a bracket assembly 10 and a filter screen assembly 20.

[0068] The bracket assembly 10 has a first working area 11 and a second working area 12, and the second working area 12 is aligned with the external air outlet 910. The bracket assembly 10 is used to be fixed on the wall surface around the air outlet 910 of the air conditioning system 900.

[0069] The filter screen assembly 20 includes a first filter screen 21 and a second filter screen 22, which are respectively movably covered on the bracket assembly 10, that is, the first filter screen 21 is movably covered on the bracket assembly 10, and the second filter screen 22 is movably covered on the bracket assembly 10. It can be understood that one of the first filter screen 21 and the second filter screen 22 covers the second working area 12 of the bracket assembly 10, so as to filter the airflow flowing through the air outlet 910 and prevent impurities and dust from entering the inside of the air conditioner to cause the air conditioner to fail.

[0070] The filtering device 100 has a first state and a second state. In the first state, the first filter screen 21 covers the first working area 11, and the second filter screen 22 covers the second working area 12. In the second state, the first filter screen 21 covers the second working area 12, and the second filter screen 22 is located outside the bracket assembly 10.

[0071] The filtering device 100 can be switched between the first state and the second state, so that the second filter screen 22 located outside the bracket assembly 10 can be replaced and maintained without stopping the air conditioning system 900.

[0072] Specifically, the first state is a normal state of the filtering device 100 on the air conditioning system 900. During most of the time when the air conditioning system 900 is working, the filtering device 100 remains in the first state. The first filter screen 21 serves as a backup and covers the first working area 11. By covering the second working area 12 with the second filter screen 22, the air inlet 910 is aligned, and the second filter screen 22 prevents impurities and dust from entering.

[0073] The second state is a state of the filtering device 100 on the air conditioning system for maintenance and replacement. In this state, the second working area 12 is covered by the first filter screen 21 and aligned with the air inlet 910, and the second filter screen 22 is moved outside the bracket assembly 10. Since the bracket assembly 10 is fixedly connected to the surrounding wall of the air inlet 910, that is, the second filter screen 22 is far away from the air inlet 910 in the second state of the filtering device 100. Therefore, even if the air conditioning system 900 is still in the working state, the air flowing through the air inlet 910 can be filtered by the first filter screen 21 to prevent impurities and dust from entering, so that the air conditioning system 900 can be replaced without stopping, especially for environments where the air conditioning system 900 needs to be continuously running. This not only meets the requirement of not stopping the air conditioning system 900, but also effectively ensures the safety of the operator.

[0074] In addition, since the second filter screen 22 is outside the bracket assembly 10 in the second state of the filtering device 100, the operator does not need to disassemble the connecting structure on the air inlet 910, and can directly disassemble the second filter screen of the filtering assembly 20, which is convenient and fast.

[0075] After the operator completes the maintenance and replacement of the second filter screen 22 in the second state, the state of the filtering device 100 can be switched back to the first state manually or by a corresponding device.

[0076] In some embodiments, referring to FIG. 1, Figures 1 to 23 As shown, the filtering device 100 includes a limiting assembly 40. The limiting assembly 40 can limit the filter screen assembly 20, so as to fix the filter screen assembly 20 and the bracket assembly 10 and prevent the filter screen assembly 20 from being separated from the bracket assembly 10.

[0077] When the limiting assembly 40 stops limiting, the filter device 100 can switch between the first state and the second state; it is convenient to replace and maintain the second filter screen 22 located outside the support assembly 10 without stopping the air conditioning system 900.

[0078] Specifically, when the air conditioning system 900 works normally, the filter device 100 usually keeps in the first state; the first filter screen 21 covers the first working area 11 as a spare part, the second filter screen 22 covers the second working area 12, and the limiting assembly 40 keeps limiting the filter screen assembly 20 to prevent the second filter screen 22 from moving, so that the second filter screen 22 can always align with the air outlet 910, and the second filter screen 22 as the main filter prevents impurities and dust from entering the air conditioning system 900.

[0079] When the second filter screen 22 reaches the filter time limit or the mass of the filtered impurities and dust reaches the preset value, the filtering performance will decrease, thereby affecting the overall performance of the air conditioning system 900, at this time, maintenance and replacement are needed.

[0080] The limiting assembly 40 stops limiting the filter screen assembly 20, the first filter screen 21 and the second filter screen 22 move to cover the support assembly 10, and the filter device 100 switches from the first state to the second state; after switching to the second state, the limiting assembly 40 can restore the limiting of the filter screen assembly 20 to avoid the filter screen assembly 20 from being separated from the support assembly 10.

[0081] The filter device 100 is in the second state; in this state, the second working area 12 is covered by the first filter screen 21 to align with the air outlet 910, the second filter screen 22 moves outside the support assembly 10, and the limiting assembly 40 keeps limiting the filter screen assembly 20 to prevent the first filter screen 21 from moving, so that the first filter screen 21 can always align with the air outlet 910, and the first filter screen 21 as the filter during maintenance prevents impurities and dust from entering the air conditioning system 900. Since the first filter screen 21 is only used as a filter during maintenance, the filter time limit of the first filter screen 21 is low, and only the second filter screen 22 needs to be replaced each time the filter device 100 is maintained. When the filter device 100 is in the second state, the second filter screen 22 is away from the air outlet 910; therefore, even if the air conditioning system 900 is still in the working state, the air flowing through the air outlet 910 can be filtered by the first filter screen 21, and the air conditioning system 900 does not need to stop, that is, the second filter screen 22 can be replaced, especially for the environment where the air conditioning system 900 needs to be continuously running, which not only meets the non-stop of the air conditioning system 900, but also effectively ensures the safety of the operator.

[0082] In some embodiments, refer to Figures 1 to 23As shown, when the limiting assembly 40 stops limiting, the second filter screen 22 can move from the second working area 12 to outside the support assembly 10 under the action of gravity.

[0083] The filter device 100 is in the first state when the air conditioning system 900 is normally working, and the second filter screen 22 can always be aligned with the air outlet 910, and the second filter screen 22 is used as the main filter to prevent impurities and dust from entering the air conditioning system 900;

[0084] When the second filter screen 22 reaches the filtering time limit or the mass of the filtered impurities and dust reaches the preset value, the filtering performance will decrease, thereby affecting the overall performance of the air conditioning system 900, and at this time, maintenance and replacement are needed.

[0085] When the filter device 100 switches from the first state to the second state, the sliding path of the second filter screen 22 can be set to be downward in the vertical direction; in this way, when the limiting assembly 40 stops limiting, the second filter screen 22 can move from the second working area 12 to outside the support assembly 10 along the vertical direction under the action of gravity; in this way, it is not necessary to separately set a driving structure for the filter device 100, and after the maintenance of the second filter screen 22 is completed, the operator can vertically upwardly hold the second filter screen 22 to return to the first state, which greatly simplifies the driving structure of the filter device 100 and reduces the overall use and maintenance cost.

[0086] In some embodiments, referring to Figures 1 to 7 As shown, the support assembly 10 includes a fixed frame 13 and an inner support frame 14.

[0087] The fixed frame 13 is surrounded to form the first working area 11 and the second working area 12. The inner support frame 14 is arranged on the fixed frame 13. Generally, the inner support frame 14 can be attached to the inner side surface of the corresponding frame structure of the fixed frame 13, and the inner support frame 14 and the fixed frame 13 can be fixed as a whole by means of bolt connection, welding or the like.

[0088] The fixed frame 13 is fixedly connected with the air outlet 910 as a connecting structure, and the inner support frame 14 is fixedly installed on the fixed frame 13 as a structure member for providing a sliding structure, so that the process complexity and production cost of the inner support frame 14 and the fixed frame 13 can be reduced; the filter screen assembly 20 is slidably arranged on the fixed frame 13 through the inner support frame 14. That is, the first filter screen 21 is slidably arranged on the inner support frame 14 and moves in the first working area 11 and the second working area 12; and the second filter screen 22 is slidably arranged on the inner support frame 14 and moves between the second working area 12 and the outside.

[0089] In addition, the bracket assembly 10 comprises a connecting seat 15, which is fixedly arranged on the inner support frame 14. The limiting assembly 40 is connected with the bracket assembly 10 through the connecting seat 15. The first filter screen 21 is provided with a first limiting portion 218 matched with the limiting assembly 40, and the second filter screen 22 is provided with a second limiting portion 228 matched with the limiting assembly 40.

[0090] In combination Figure 1 As shown in FIG. 1, when the filter device 100 is in the first state; the first filter screen 21 is located on the inner support frame 14 and covers the first working area 11, and the second filter screen 22 is located on the inner support frame 14 and covers the second working area 12; the second limiting portion 228 on the second filter screen 22 is in limiting cooperation with the limiting assembly 40, thereby preventing the filter screen assembly 20 from slidingly moving or even separating from the bracket assembly 10, so that the filter device 100 can be kept in the first state for a long time.

[0091] In combination Figure 4 And Figure 5 As shown in FIG. 2, when the filter device 100 is in the second state; the first filter screen 21 is located on the inner support frame 14 and covers the second working area 12, and the second filter screen 22 is located outside the fixed frame 13; in this way, the second filter screen 22 can be replaced without stopping the air conditioning system 900, and the safety of the operator can be effectively ensured. At this time, the first limiting portion 218 on the first filter screen 21 is in limiting cooperation with the limiting assembly 40, thereby preventing the filter screen assembly 20 from slidingly moving or even separating from the bracket assembly 10, so that the filter device 100 can be kept in the second state for a long time, and the operator can conveniently maintain.

[0092] In some embodiments, referring to Figures 6 to 10 As shown in FIG. 3, the fixed frame 13 comprises first, second, third, fourth, fifth and sixth support rods 131, 132, 133, 134, 135 and 136 connected in sequence.

[0093] The first support rod 131 is arranged in parallel with the fifth support rod 135, the second support rod 132 is arranged in parallel with the fourth support rod 134, and the third support rod 133 is arranged in parallel with the sixth support rod 136.

[0094] The second, third and fourth support rods 132, 133 and 134 are arranged in a first plane and form the first working area 11. The second support rod 132 and the third support rod 133 and the third support rod 133 and the fourth support rod 134 can be integrally bent at right angles or at an angle close to 90°, and the three form a V-shaped structure.

[0095] Similarly, the fifth supporting rod 135, the sixth supporting rod 136 and the first supporting rod 131 are in the second plane and form the second working area 12. The fifth supporting rod 135 and the first supporting rod 131, the sixth supporting rod 136 and the first supporting rod 131 can be integrally bent at an angle close to 90° or perpendicular to each other, and the three constitute a y-shaped structure.

[0096] In combination Figure 8 As shown in the drawings, the first point O is at the connection between the first supporting rod 131 and the second supporting rod 132, the second point P is at the connection between the fourth supporting rod 134 and the fifth supporting rod 135, and the line between the first point O and the second point P is the constructed dashed line OP. The constructed dashed line OP is the boundary line between the second working area 12 and the first working area 11. Specifically, the area surrounded by the second supporting rod 132, the third supporting rod 133, the fourth supporting rod 134 and the constructed dashed line OP is the first working area 11, and the plane thereof is the first plane; the area surrounded by the fifth supporting rod 135, the sixth supporting rod 136, the first supporting rod 131 and the constructed dashed line OP is the first working area 11, and the plane thereof is the second plane.

[0097] Optionally, the fixed frame 13 can be integrally stamped and bent from a sheet metal part, in combination Figure 9 , Figure 10 and Figure 1 As shown in the drawings, the fifth supporting rod 135, the sixth supporting rod 136 and the first supporting rod 131 form a mounting step, and the fifth supporting rod 135 and the first supporting rod 131 can have a plurality of fixing holes 139 on the upper surface. In this way, the mounting step can be fixed to the sheet metal structure around the air port 910 by bolts passing through the fixing holes 139, and other structures such as the filter screen assembly 20 and the limiting assembly 40 are sequentially connected to the support assembly 10, thereby realizing the installation and fixation of the filter device 100 and the air conditioning system 900.

[0098] In some embodiments, referring to Figure 6 , Figure 7 and Figures 11 to 13 The inner support frame 14 includes two groups of guide rails 141, one group of guide rails 141 is arranged on the first supporting rod 131 and the second supporting rod 132, and the other group of guide rails 141 is arranged on the fourth supporting rod 134 and the fifth supporting rod 135.

[0099] The first supporting rod 131 and the second supporting rod 132 can be integrally connected to form an L-shaped rod, and the fourth supporting rod 134 and the fifth supporting rod 135 can be integrally connected to form an L-shaped rod; in this way, the guide rail 141 can be an L-shaped rod.

[0100] The first filter screen 21 and the second filter screen 22 are respectively arranged between the two groups of guide rails 141; thereby preventing the first filter screen 21 and the second filter screen 22 from being stuck during the switching between the first state and the second state of the filter device 100.

[0101] Optionally, referring to Figures 1 to 4 , the filter assembly 20 includes a plurality of rollers 24, which can be arranged on the first filter screen 21 and the second filter screen 22 as needed, and are moved by being arranged on the guide rails 141, thus having simple structure and small frictional resistance. In other embodiments, a slide column structure can also be arranged for sliding.

[0102] Optionally, referring to Figure 21 , the rollers 24 have annular clamping grooves 241, which can be embedded with the guide rail grooves 142 to enable the rollers 24 to slide and roll in the guide rail grooves 142 to reduce the frictional resistance.

[0103] Optionally, the inner support frame 14 can be integrally stamped from sheet metal; this has low cost and can be designed into a corresponding sheet metal profile as needed.

[0104] Optionally, referring to Figure 2 , Figure 3 , Figures 5 to 7 , and Figures 11 to 13 , the inner support frame 14 can include a support plate 145. The support plate 145 is connected between the two groups of guide rails 141. Specifically, one side of the support plate 145 is connected to a section of one guide rail 141 corresponding to the second support rod 132, and the other side of the support plate 145 is connected to a section of the other guide rail 141 corresponding to the fourth support rod 134.

[0105] When the inner support frame 14 is installed on the fixed frame 13, the support plate 145 can cover part of the second working area 12.

[0106] When the filter device 100 is in the first state; the first filter screen 21 is located on the inner support frame 14 and covers the first working area 11, and the support plate 145 is located on the lower side of the first filter screen 21, thereby shielding the airflow from entering the air inlet 910 from the first filter screen 21.

[0107] When the filter device 100 is switched from the first state to the second state, in combination with Figure 2 and Figure 3 , the first filter screen 21 rotates clockwise along the guide rail 141 around the hinge between the first filter screen 21 and the connecting piece 23 (mentioned below), and the second filter screen 22 moves vertically downward along the guide rail 141; in this process, since the first filter screen 21 will rotate, the support plate 145 can be designed as a circular-arc-shaped sheet metal surface, thereby providing a corresponding accommodation for the movement of the first filter screen 21.

[0108] When the filtering device 100 is in the second state, the first filter screen 21 is located on the inner support frame 14 and covers the second working area 12, and the second filter screen 22 is located outside the fixed frame 13; the support plate 145 covers part of the first working area 11, thereby preventing the airflow from directly entering the air inlet 910 from the first working area 11.

[0109] Optionally, referring to Figures 11 to 13 As shown, the inner support frame 14 can include two rib plates 144; which are respectively connected between the circular arc segments of the guide rail 141 and the support plate 145; in this way, the air-tight effect can be further achieved to prevent the airflow from entering the air inlet 910 from the side around the support plate 145.

[0110] In other embodiments, the first plane and the second plane can also be coplanar. For example, both are vertical planes.

[0111] In some embodiments, referring to Figures 1 to 9 As shown, the second plane is a vertical plane; the first plane is arranged at an angle with the second plane. In this way, the space in the vertical direction can be saved.

[0112] Among them, the first support rod 131 and the fifth support rod 135 are arranged in the vertical direction, and the included angle between the second support rod 132 and the first support rod 131 and the included angle between the fourth support rod 134 and the fifth support rod 135 correspond to the included angle A between the first plane and the second plane in the vertical direction; the value range of the included angle A can be 80°-145°.

[0113] Correspondingly, the overall shape of the guide rail 141 can be an L-shaped rod. The first sub-segments of the two guide rails 141 are located in the first plane and extend on the second support rod 132 and the fourth support rod 134 respectively; the second sub-segments of the two guide rails 141 extend in the vertical direction, that is, in the second plane, and extend on the first support rod 131 and the fifth support rod 135 respectively. The included angle between the first sub-segment and the second sub-segment is close to or equal to A in value.

[0114] The first sub-segment corresponds to the first working area 11, and the second sub-segment corresponds to the second working area 12. When the filtering device 100 is in the first state; the first filter screen 21 is slidably arranged on the first sub-segment of the guide rail 141, and the second filter screen 22 is slidably arranged on the second sub-segment of the guide rail 141.

[0115] The filtering device 100 is in the first state continuously during normal operation, and when the second filter screen 21 needs to be maintained and replaced, the filtering device 100 is switched from the first state to the second state by the stop limiting of the limiting assembly 40.

[0116] Specifically, in combination with Figures 1 to 4As shown, when the limiting assembly 40 stops limiting, the second filter screen 22 moves downward along the second sub-segment of the guide rail 141 under the action of its own gravity, and the second filter screen 22 drags the first filter screen 21 to move along the guide rail 141.

[0117] In the process of moving, the first filter screen 21 close to the rear side of the second filter screen 22 moves from the first sub-segment to the second sub-segment of the guide rail 141 and moves downward, and the first filter screen 21 away from the front side of the second filter screen 22 moves along the first sub-segment to the right side close to the second sub-segment, so that the first filter screen 21 generates clockwise rotation.

[0118] When the front side of the first filter screen 21 also moves from the first sub-segment to the second sub-segment of the guide rail 141, the limiting assembly 40 limits with the first limiting part 218 on the first filter screen 21; at this time, the first filter screen 21 covers the second working area 12, and the second filter screen 22 moves outward to the area outside the fixed frame 13; at this time, the filter device 100 is in the second state; it is convenient for the operator to replace and maintain the second filter screen 22 without stopping the air conditioning system 900.

[0119] When the maintenance and replacement are completed, the operator can switch the filter device 100 from the second state to the first state.

[0120] Specifically, when the filter device 100 is in the second state, when the second filter screen 21 is maintained and replaced, the limiting assembly 40 stops limiting, and the filter device 100 can be switched from the second state to the first state.

[0121] In combination Figures 1 to 4 As shown, when the limiting assembly 40 stops limiting, the second filter screen 22 moves upward along the second sub-segment of the guide rail 141 under the action of its own gravity, and the second filter screen 22 drags the first filter screen 21 to move along the guide rail 141.

[0122] In the process of moving, the first filter screen 21 close to the rear side of the second filter screen 22 moves from the first sub-segment to the second sub-segment of the guide rail 141 and moves upward, and the first filter screen 21 away from the front side of the second filter screen 22 moves along the first sub-segment to the left side away from the second sub-segment, so that the first filter screen 21 generates counterclockwise rotation.

[0123] When the rear side of the first filter screen 21 is moved upward from the second sub-section to the first sub-section of the guide rail 141, the front side of the first filter screen 21 reaches the leftmost side of the first sub-section of the guide rail 141, and the limiting assembly 40 re-limits the second limiting part 228 on the second filter screen 22; at this time, the first filter screen 21 covers the first working area 11, and the second filter screen 22 covers the second working area 12; at this time, the filter device 100 is in the second state; the second filter screen 22 continues to cover the air inlet 910 of the air conditioning system 900, thereby filtering the airflow flowing through the air inlet 910 and preventing impurities and dust from entering the interior of the air conditioner to cause the air conditioner to fail.

[0124] Optionally, as shown in Figures 1 to 10 When the first plane and the second plane are arranged at an angle greater than 90°, the second support rod 132 and the fourth support rod 134 extend in a horizontally upward direction, and the metal wall surface on the top side of the air inlet 910 of the air conditioning system 900 is generally a horizontal plane, and the connecting metal surface 138 can be arranged on the fixed frame 13. The connecting metal surface 138 extends along the bottom sides of the second support rod 132, the third support rod 133, and the fourth support rod 134, and the other side of the connecting metal surface 138 is bolted or welded to the metal wall surface on the top side of the air inlet 910, thereby effectively preventing gaps from occurring between the filter device 100 and the air inlet 910, and improving air tightness.

[0125] Optionally, as shown in Figures 1 to 10 , Figure 22 and Figure 23 The fixed frame 13 is integrally bent and formed from metal, wherein the first support rod 131, the second support rod 132, the third support rod 133, the fourth support rod 134, and the fifth support rod 135 are formed with a fixed edge 137 away from the upper side of the air inlet 910, which can be used to cooperatively and fixedly mount the cover plate 16 (mentioned below), thereby effectively preventing gaps from occurring between the fixed frame 13 and the cover plate 16, and improving air tightness.

[0126] In some embodiments, as shown in Figures 1 to 13 The guide rail 141 is formed with a guide rail groove 142, and the guide rail groove 142 is formed with an opening 143 at an end of the guide rail 141 away from the third support rod 133. It can be understood that the guide rail 141 is an L-shaped rod member, and the guide rail groove 142 is correspondingly formed as an L-shaped open groove with an open end. Since the guide rail 141 is divided into a first sub-section and a second sub-section, correspondingly, the section of the guide rail groove 142 located in the first sub-section can be defined as a first sub-groove, which is located in the first plane; the section of the guide rail groove 142 located in the second sub-section can be defined as a second sub-groove, which extends in a vertical direction, i.e., is located in the second plane; the first sub-groove and the second sub-groove are in communication with each other, and the opening 143 is at an end of the second sub-groove away from the first sub-groove.

[0127] The first filter screen 21 is provided with two rollers 24 respectively arranged in front of and behind the two side surfaces corresponding to the two guide rails 141, and the second filter screen 22 is provided with two rollers 24 respectively arranged in front of and behind the two side surfaces corresponding to the two guide rails 141.

[0128] The rollers 24 are embedded in the guide rail grooves 142, and under normal circumstances, the filter assembly 20 is limited by the limiting assembly 40 to avoid the movement of the first filter screen 21 and the second filter screen 22 relative to the guide rail grooves 142.

[0129] When the filter device 100 is switched from the first state to the second state, the first filter screen 21 slides along the guide rail groove 142 from the first working area 11 to the second working area 12, and the second filter screen 22 moves outward from the second working area 12 to the area outside the fixed frame 13 through the opening 143.

[0130] Specifically, in combination with Figures 1 to 4 As shown in the figure, the filter device 100 is in the first state during normal operation, and when the second filter screen 21 needs to be maintained and replaced, the limiting by the limiting assembly 40 is stopped, the second filter screen 22 is subjected to the action of its own gravity, the rollers 24 on both sides of the second filter screen 22 move downward along the second sub-groove of the guide rail groove 142, and when moving a certain distance, the roller 24 on the rear side of the second filter screen 22 away from the first filter screen 21 can be separated from the opening 143; the second filter screen 22 drags the first filter screen 21 to move along the guide rail groove 142.

[0131] During the movement of the first filter screen 21, the roller 24 on the rear side of the first filter screen 21 close to the second filter screen 22 moves from the first sub-groove to the second sub-groove of the guide rail groove 142, and then moves downward along the second sub-groove, and the roller 24 on the front side of the first filter screen 21 away from the second filter screen 22 moves from the first sub-groove to the right side close to the second sub-groove, so that the first filter screen 21 rotates in the clockwise direction.

[0132] When continuing to move a certain distance, the roller 24 on the front side of the second filter screen 22 close to the first filter screen 21 is separated from the opening 143, and at this time, the second filter screen 22 has completely separated from the guide rail groove 142; the roller 24 on the front side of the first filter screen 21 away from the second filter screen 22 also completely moves from the first sub-groove to the second sub-groove of the guide rail groove 142, and then moves downward along the second sub-groove, and at this time, the first filter screen 21 has completely located in the second sub-groove of the guide rail groove 142; the limiting assembly 40 is limited with the first limiting part 218 on the first filter screen 21 to prevent the first filter screen 21 from separating from the guide rail 141.

[0133] In this way, the filtering device 100 enters the second state, in which the first filter screen 21 covers the second working area 12, and the second filter screen 22 moves outward to the area outside the fixed frame 13; the second filter screen 22 can be conveniently replaced and maintained without stopping the air conditioning system 900.

[0134] When the maintenance and replacement are completed, the filtering device 100 switches from the second state to the first state in the reverse manner, which will not be described herein.

[0135] Unlike the previous embodiment, in some other embodiments, the filtering device 100 can also be driven by an external power mechanism, without relying on the gravity of the second filter screen 22. For example, a motor, a spring or the like can be used to drive the first filter screen 21 and the second filter screen 22 to move, thereby switching the filtering device 100 from the first state to the second state. It can be understood that the second plane can also be a horizontal plane or a plane in other directions by driving the switching by the external power mechanism.

[0136] In some embodiments, as shown in Figures 1 to 6 and Figures 16 to 18 , the filter screen assembly 20 includes a connecting piece 23, which is hingedly connected to the first filter screen 21 and the second filter screen 22, respectively.

[0137] In this way, during the switching of the filtering device 100 between the first state and the second state, the second filter screen 22 is hingedly connected to the first filter screen 21 through the connecting piece 23, so as to drive the first filter screen 21 to move along the guide rail 141 through the second filter screen 22.

[0138] In some embodiments, as shown in Figures 1 to 6 and Figures 16 to 20 , the first filter screen 21 includes a first fixed frame 211 and a first body 212, which is detachably embedded in the first fixed frame 211, for example, in the form of buckle connection or adhesion. The second filter screen 22 includes a second fixed frame 221 and a second body 222, which is detachably embedded in the first fixed frame 211; for example, in the form of buckle connection or adhesion.

[0139] When the filtering device is in the first state, the limiting assembly 40 limits the second fixed frame 221; when the filtering device is in the second state, the limiting assembly 40 limits the first fixed frame 211.

[0140] One side of the connector 23 is hinged to the first fixing frame 211, and the other side of the connector 23 is hinged to the second fixing frame 221. Specifically, the connector 23 can be an injection molded part, including a main body 231, connecting buckles 232, and side baffles 233. The main body 231 is the main body of the connector 23. The connecting buckles 232 are located on both sides of the main body 231. One side of the connecting buckle 232 can be hinged to the first first hole groove 216 on the first filter screen 21, and the other side of the connecting buckle 232 can be hinged to the second first hole groove 226 on the second filter screen 22, thereby connecting the first filter screen 21 and the second filter screen 22. The side baffles 233 are baffles at both ends of the main body 231, used to improve airtightness and prevent airflow from entering the air outlet 910 from the ends of the connector 23.

[0141] In various embodiments of this application, the first body 212 and the second body 222 can be multi-layered folded filter screens, and the filter screen material can be selected from various options such as aluminum mesh, stainless steel mesh, non-woven fabric, fiber mesh, activated carbon filter screen, etc.

[0142] Combination Figures 1 to 6 ,as well as Figures 16 to 21 As shown, the first fixing frame 211 and the second fixing frame 221 can be injection molded parts.

[0143] The first fixed frame 211 may include a first roller fixing post 213, a first body limiting block 214, a first body buckle 215, a first hole groove 216, a first body mounting groove 217, and a first limiting part 218.

[0144] There are four first roller fixing posts 213, distributed at the four corners of the first fixing frame 211, for rotatable connection with the roller 24; eight first body limiting blocks 214 are provided, distributed on the front and rear sides of the top of the first fixing frame 211; correspondingly, eight first body buckles 215 are also provided, distributed on the front and rear sides of the bottom of the first fixing frame 211. The first body buckles 215 correspond to the first body limiting blocks 214 and are used together to limit the first body 212 to prevent it from falling out; the first slot 216 Four mounting slots are distributed on the upper and lower surfaces of the first fixed frame 211, used to cooperate with the connector 23 to achieve hinge connection; the first body mounting slot 217 is a cavity formed inside the first fixed frame 211 to accommodate the first body 212, facilitating the insertion of the first body 212 into the first body mounting slot 217 to achieve a fixed connection between the first fixed frame 211 and the first body 212; the first limiting part 218 is arranged on the outside of the first fixed frame 211 and can be used to limit the engagement with the rotating rod 42 (mentioned below) of the limiting assembly 40. Specifically, the first limiting part 218 can be a wedge-shaped block, and a third limiting part 424 is formed on the rotating rod 42, which can be a corresponding wedge-shaped block; the two abut against each other to restrict the downward sliding of the first fixed frame 211.

[0145] The second fixed frame 221 can include a second roller fixing column 223, a second body limiting block 224, a second body buckle 215, a second hole slot 216, a second body mounting slot 227, and a second limiting portion 218.

[0146] The overall structure and connection relationship of the first fixed frame 211 and the second fixed frame 221 are basically the same, and therefore the specific structure arrangement and connection relationship of the second fixed frame 221 will not be described again.

[0147] When the filter device 100 is in the second state, the limiting assembly 40 is limited with the first limiting portion 218 on the first filter screen 21; when the filter device 100 is in the first state, the limiting assembly 40 is limited with the second limiting portion 228 on the second filter screen 22.

[0148] It should be noted that in the related art, the indoor unit of part of the air conditioner is installed in the ceiling, and the operator needs to open the ceiling installation opening when disassembling and maintaining the filter screen, and then disassembles the screw buckle of the filter screen. The operation space is small, the operation steps are many, and the overall operation is difficult and complicated.

[0149] By adopting the buckle connection of the first fixed frame 211 and the first body 212 and the buckle connection of the second fixed frame 221 and the second body 222, when the operator maintains and replaces the second filter screen 22 and the first filter screen 21, the operator does not need to disassemble the screw, and the operation steps are reduced. Especially for the air conditioning system 900 installed in the ceiling, when the filter device 100 is in the second state and the second filter screen 22 is located outside the bracket assembly 10, the operator only needs to open the ceiling installation opening, disassemble the second body 222 from the second filter screen 22, and replace the new second body 222 into the second fixed frame 221, so as to complete the maintenance and replacement of the second filter screen 22. The whole process does not need to disassemble the screw, which is convenient and fast.

[0150] In some embodiments, referring to Figures 1 to 15 As shown in the figure, the bracket assembly 10 includes a connecting seat 15 with a first mounting portion 151, and the connecting seat 15 is fixedly connected with the inner support frame 14. Specifically, the connecting seat 15 can be arranged on one end of the guide rail 141 away from the third supporting rod 133.

[0151] The limiting assembly 40 includes a driving portion 41 and a rotating rod 42. The rotating rod 42 includes a rod body 421 and a first connecting portion 422 arranged on the rod body 421. One end of the rod body 421 is formed with a third limiting portion 424, which can be a wedge-shaped block.

[0152] The first connecting portion 422 is hinged with the first mounting portion 151; one of the first connecting portion 422 and the first mounting portion 151 can be a pin shaft, and the other can be a rotation hole matched with the pin shaft.

[0153] The driving portion 41 can drive the rod body 421 to rotate around the first mounting portion 151; thus, the rod body 421 can be limited or separated from the filter assembly 20. When the filter device 100 is in the first state, the third limiting portion 424 is limited and matched with the second limiting portion 228 of the second filter screen 22; when the filter device 100 is in the second state, the third limiting portion 424 is limited and matched with the first limiting portion 218 of the first filter screen 21.

[0154] Specifically, referring to the orientation shown in Figure 1 , the filter device 100 is in the first state when it is working normally, and the third limiting portion 424 of the rod body 421 is buckled and limited and matched with the second limiting portion 228 on the second filter screen 22; thus, the second filter screen 22 is limited on the second sub-section of the guide rail 141, so that the second filter screen 22 can cover the second working area 12; the first filter screen 21 connected with the second filter screen 22 is correspondingly limited on the first sub-section of the guide rail 141, so that the first filter screen 21 can cover the first working area 11; the connecting sword 23 is connected between the first filter screen 21 and the second filter screen 22.

[0155] When the second filter screen 21 needs to be maintained or replaced, the rod body 421 is driven by the driving portion 41 to rotate clockwise around the first mounting portion 151 by a certain angle, the third limiting portion 424 is separated from the second limiting portion 228, and the limiting assembly 40 stops limiting; thus, the first filter screen 21 and the second filter screen 22 can move along the guide rail 141 until the first filter screen 21 covers the second working area 12, and the second filter screen 22 moves outward to the area outside the fixed frame 13; referring to the orientation shown in Figures 2 to 5 , the rod body 421 is driven by the driving portion 41 to rotate counterclockwise around the first mounting portion 151 by a certain angle, and the third limiting portion 424 is limited and matched with the first limiting portion 218 of the first filter screen 21 to prevent the first filter screen 21 from being separated from the guide rail 141.

[0156] At this time, the filter device 100 is in the second state. The operator can replace and maintain the second filter screen 22 away from the air outlet 910 without stopping the air conditioning system 900, which is safe and fast.

[0157] In some embodiments, referring to the orientation shown in Figures 1 to 7 , the connecting seat 15 has a second mounting portion 152. The rotating rod 42 includes a second connecting portion 423, which is arranged at the other end of the rod body 421 away from the third limiting portion 424; one end of the driving portion 41 is hinged with the second mounting portion 152, and the other end of the driving portion 41 is hinged with the second connecting portion 423.

[0158] The driving part 41 is an electromagnetic switch. Specifically, the electromagnetic switch is generally telescopic along its own axial direction. Thus, by designing the length of the driving part 41 itself, the positions of the second connecting part 423, the first mounting part 151 and the second mounting part 152, when the driving part 41 is in the extended state, has a relatively long axial length, the driving part 41 can drive the rod body 421 to rotate counterclockwise around the first mounting part 151, so that the third limiting part 424 is limited with the filter assembly 20; on the contrary, when the driving part 41 is in the shortened state, has a relatively short axial length, the driving part 41 can drive the rod body 421 to rotate clockwise around the first mounting part 151, so that the third limiting part 424 is separated from the filter assembly 20.

[0159] The driving part 41 can be controlled by the controller (not shown) of the air conditioning system 900.

[0160] In combination Figure 1 As shown in the orientation, the filter device 100 is in the first state during normal operation, the driving part 41 is in the extended state, and the third limiting part 424 of the rod body 421 is limited with the second limiting part 228 on the second filter screen 22.

[0161] When the controller determines that the second filter screen 22 needs to be replaced, in combination Figure 2 and Figure 3 As shown in the orientation, the driving part 41 is in the shortened state, the third limiting part 424 of the rod body 421 is separated from the second limiting part 228 on the second filter screen 22, and the limiting assembly 40 stops limiting, so that the first filter screen 21 and the second filter screen 22 can move along the guide rail 141 until the first filter screen 21 covers the second working area 12 and the second filter screen 22 moves outward to the area outside the fixed frame 13.

[0162] Until the first filter screen 21 covers the second working area 12 and the second filter screen 22 moves outward to the area outside the fixed frame 13; the limiting assembly 40 resumes limiting, the filter device 100 is in the second state, in combination Figure 5 As shown in the orientation, the driving part 41 is in the extended state, the third limiting part 424 is limited with the first limiting part 218 of the first filter screen 21.

[0163] It should be noted that the electromagnetic switch of the limiting assembly 40 cooperates with the corresponding rotating rod 42 to act, thereby completing the limiting and canceling the limiting, so that the filter assembly 20 can be switched from the first state to the second state without relying on external driving force; after the second filter screen 22 is maintained, the operator can hold the second filter screen 22 vertically upward to return to the first state, which greatly simplifies the driving structure of the filter device 100 and reduces the overall use and maintenance cost.

[0164] In the related art, the cleaning and replacement cycle of the filter screen is different according to the different use environment of the air conditioner, and the maintenance is complicated and the labor cost is increased due to the replacement cycle only relying on human memory.

[0165] In the embodiments of the present application, the controller controls the limiting assembly 40, so that the driving part 41 is in the stretched state or the shortened state, thereby limiting or canceling the limiting, and then the air conditioning system 900 can control the filter device 100 to switch from the first state to the second state in time, without the labor memory of the operator, thereby reducing the maintenance cost, and meanwhile, the filtering capacity of the second filter screen 22 can be prevented from being reduced due to overload, thereby prolonging the overall service life of the air conditioning system 900 and making the function stable and reliable.

[0166] However, in some cases, even if the controller does not actively control the driving part 41, the operator may need to maintain the second filter screen 22 due to maintenance or other reasons, and needs to be able to manually switch the filter device 100 from the first state to the second state. For this purpose, the operator usually directly rotates the rod body 421 by hand.

[0167] In some embodiments, as shown in Figures 1 to 6 , Figure 14 and Figure 15 , the rotating rod 42 includes a rotating rod 425 arranged on the rod body 421; the rotating rod 425 can be rotated to drive the rod body 421 to rotate around the first mounting part 151.

[0168] The rotating rod 425 is usually arranged at the other end of the rod body 421 away from the third limiting part 424, and extends outward in a direction perpendicular to the axial direction of the rod body 421; the rotating rod 425 and the second connecting part 423 are respectively arranged on the two sides of the end.

[0169] The operator can directly grab the rotating rod 425 by hand to overcome the elastic resistance in the electromagnetic switch, so that the rod body 421 rotates clockwise or counterclockwise around the first mounting part 151, thereby limiting or canceling the limiting, and the use is more flexible.

[0170] In some embodiments, the bracket assembly 10 includes a cover plate 16 covering the fixed frame 13.

[0171] The cover plate 16 can be a sheet metal part, and the overall shape is similar to the outer contour shape of the fixed frame 13, and both are L-shaped sheet metal structures. The cover plate 16 is formed with a frame opening 161, when the cover plate 16 covers the fixed frame 13, the frame opening 161 exposes at least a part of the second working area 12, so that an air flow channel is formed, so that the air conditioning system 900 can exchange gas with the outside.

[0172] Optionally, as shown inFigure 22 As shown, the cover plate 16 is formed with a waist-shaped hole 162, and a portion of the actuating rod 425 protrudes from the waist-shaped hole 162, facilitating the operator to actuate.

[0173] Optionally, referring to Figure 14 and Figure 15 As shown, the rotating rod 42 includes a baffle 426. When the cover plate 16 covers the fixing frame 13, most of the structure of the limiting assembly 40 is located between the cover plate 16 and the fixing frame 13, and the baffle 426 is arranged on the rod body 421 and can block the waist-shaped hole 162, and the actuating rod 425 extends outward from the baffle 426.

[0174] The second aspect of the present application provides an air conditioning system, comprising the above-mentioned filter device 100.

[0175] Optionally, the air conditioning system 900 of each embodiment of the present application can be a ducted indoor unit.

[0176] The third aspect of the present application provides a control method applied to an air conditioning system. The air conditioning system generally comprises a controller (not marked), a reminder (not marked), and a sensor (not marked) arranged at an air outlet; the controller is in signal connection with the sensor, and the controller controls the limiting assembly 40 and the reminder, respectively.

[0177] Referring to Figure 24 As shown, the control method comprises:

[0178] S10, obtaining a sensing signal. The sensing signal is generally an electrical signal, which is converted into a corresponding electrical signal by the sensor after sensing a parameter and sent to the controller.

[0179] S20, determining whether the second filter screen 22 needs to be replaced based on the sensing signal.

[0180] S30, if yes, controlling the limiting assembly 40 to stop limiting, and switching the filter device 100 from the first state to the second state. At this time, the second filter screen 22 moves to the outside of the support assembly 10, which can avoid the decline of the filtering capacity of the second filter screen 22 due to overloading, thereby prolonging the overall service life of the air conditioning system 900 and making the function stable and reliable. If the controller determines that the second filter screen 22 does not need to be replaced, the controller returns to execute the step of obtaining the sensing signal at the air outlet 910 of the air conditioning system. In this way, the signal is continuously obtained to monitor the state of the second filter screen 22.

[0181] S40, starting the reminder. The reminder can be a control panel, a display panel, or an audible and visual alarm, so as to notify the operator to replace and maintain the second filter screen 22 located outside in time.

[0182] In some embodiments, the step S30 of determining whether the second filter screen 22 needs to be replaced based on the sensing signal specifically comprises:

[0183] S31, converting the induction signal into a corresponding actual value of a parameter. The parameter can be one or more of a wind speed of the air outlet 910, a wind pressure of the air outlet 910, a driving current of the fan 920, and a driving voltage of the fan 920;

[0184] S32, calling a theoretical range of the parameter. The theoretical range of the parameter can be pre-input into the controller by the manufacturer during production.

[0185] S33, if the actual value of the parameter is within the theoretical range, determining that the second filter screen 22 needs to be replaced; otherwise, determining that the second filter screen 22 does not need to be replaced.

[0186] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but it should be considered that any combination of the technical features is within the scope of the present disclosure, as long as the combination does not cause contradiction.

[0187] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be considered as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements are also within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A filtration device, characterized in that, include: The bracket assembly (10) has a first working area (11) and a second working area (12), the second working area (12) being aligned with an external air vent; and a filter assembly (20), including a first filter (21) and a second filter (22) respectively movably disposed on the support assembly (10). The filtration device has a first state and a second state; The first state is configured as follows: the first filter (21) covers the first working area (11), and the second filter (22) covers the second working area (12). The second state configuration is as follows: the first filter (21) covers the second working area (12), and the second filter (22) is located outside the support assembly (10); The filter device includes a limiting component (40) that can limit the position of the filter assembly (20); When the limiting component (40) stops limiting, the filtering device can switch between the first state and the second state; The first working area (11) is located in the first plane, and the second working area (12) is located in the second plane; the second plane is a vertical plane; the first plane and the second plane are set at an angle.

2. The filtration device according to claim 1, characterized in that, When the limiting component (40) stops limiting, the second filter (22) can move from the second working area (12) to outside the bracket assembly (10) under the action of gravity.

3. The filtration device according to claim 1 or 2, characterized in that, The support assembly (10) includes a fixed frame (13) and an inner support frame (14); the fixed frame (13) encloses and forms the first working area (11) and the second working area (12). The inner support frame (14) is mounted on the fixed frame (13); The filter assembly (20) is slidably mounted on the fixed frame (13) via the inner support frame (14).

4. The filtration device according to claim 3, characterized in that, The fixing frame (13) includes a first support rod (131), a second support rod (132), a third support rod (133), a fourth support rod (134), a fifth support rod (135), and a sixth support rod (136) connected end to end. The second support rod (132), the third support rod (133), and the fourth support rod (134) are located in a first plane and enclose the first working area (11); the fifth support rod (135), the sixth support rod (136), and the first support rod (131) are located in a second plane and enclose the second working area (12). The inner support frame (14) includes two sets of guide rails (141), one set of the guide rails (141) is arranged on the first support rod (131) and the second support rod (132), and the other set of the guide rails (141) is arranged on the fourth support rod (134) and the fifth support rod (135); The first filter screen (21) and the second filter screen (22) are respectively disposed between the two sets of guide rails (141).

5. The filtration device according to claim 4, characterized in that, A guide groove (142) is formed on the guide rail (141), and the guide groove (142) forms an opening (143) at the end of the guide rail (141) away from the third support rod (133). When the filter device switches from the first state to the second state, the first filter screen (21) slides along the guide rail groove (142) from the first working area (11) to the second working area (12), and the second filter screen (22) moves along the guide rail groove (142) from the second working area (12) outward through the opening (143) to the area enclosed by the fixing frame (13).

6. The filtration device according to claim 1 or 2, characterized in that, The filter assembly (20) includes a connector (23); the connector (23) is hinged to the first filter (21) and the second filter (22) respectively.

7. The filtration device according to claim 6, characterized in that, The first filter screen (21) includes a first fixed frame (211) and a first body (212), the first body (212) being detachably embedded in the first fixed frame (211); the connector (23) is hinged to the first fixed frame (211); The filter device is in the second state, and the limiting component (40) is limited by the first fixing frame (211).

8. The filtration device according to claim 7, characterized in that, The second filter (22) includes a second fixing frame (221) and a second body (222), the second body (222) being detachably embedded in the first fixing frame (211); the connector (23) is hinged to the second fixing frame (221); The filter device is in the first state, and the limiting component (40) is limited by the second fixing frame (221).

9. The filtration device according to claim 3, characterized in that, The bracket assembly (10) includes a connector (15) having a first mounting portion (151), the connector (15) being fixedly connected to the inner support frame (14); The limiting component (40) includes a drive unit (41) and a rotating rod (42). The rotating rod (42) includes a rod body (421) and a first connecting part (422) disposed on the rod body (421). A third limiting part (424) is formed at one end of the rod body (421), and the first connecting part (422) is hinged to the first mounting part (151). The drive unit (41) can drive the rod body (421) to rotate around the first mounting part (151).

10. The filtration device according to claim 9, characterized in that, The filter device is in the first state, and the third limiting part (424) is in a limiting cooperation with the second filter screen (22); The filter device is in the second state, and the third limiting part (424) is in a limiting cooperation with the first filter screen (21).

11. The filtration device according to claim 9, characterized in that, The connector (15) has a second mounting part (152); The rotating rod (42) includes a second connecting part (423), which is disposed at the other end of the rod body (421) away from the third limiting part (424); The driving part (41) is an electromagnetic switch. One end of the driving part (41) is hinged to the second mounting part (152), and the other end of the driving part (41) is hinged to the second connecting part (423).

12. The filtration device according to claim 9, characterized in that, The rotating rod (42) includes a lever (425) disposed on the rod body (421); the lever (425) can be moved to drive the rod body (421) to rotate around the first mounting part (151).

13. The filtration device according to claim 3, characterized in that, The support assembly (10) includes a cover plate (16) covering the fixture (13), the cover plate (16) having a frame opening (161) that exposes at least a portion of the second working area (12).

14. An air conditioning system, characterized in that, Includes the filtration device as described in any one of claims 1 to 13.

15. A control method applied to the air conditioning system as described in claim 14; characterized in that, The control method includes: Acquire sensor signals; Based on the sensing signal, determine whether the second filter (22) needs to be replaced; If so, the control limit component (40) stops limiting, and the filter device switches from the first state to the second state; Start the reminder.

16. The control method according to claim 15, characterized in that, The step of determining whether the second filter (22) needs to be replaced based on the sensing signal specifically includes: Convert the sensed signal into the actual value of the corresponding parameter; The theoretical range of the retrieved parameters; If the actual value of the parameter is within the theoretical range, then the second filter (22) needs to be replaced; otherwise, the second filter (22) does not need to be replaced.

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