An air conditioning filter structure with a quick-release filter screen

Abstract

This utility model discloses an air conditioner filter structure with a quick-release filter, belonging to the field of air conditioning technology. It includes an indoor unit housing, a cover plate hinged to the outside of the indoor unit housing, and an evaporator installed inside the indoor unit housing. This utility model uses a magnetic structure to install the filter. A first magnet on the indoor unit housing and a second magnet on the filter's plastic frame interact, replacing traditional clips and slots, significantly simplifying the alignment process during installation. Simultaneously, a third magnet is located on the bottom pressure rod of the cover plate. The magnetic attraction of the third magnet to the second magnet is greater than that of the first magnet. When the cover plate is closed, the third magnet attracts the second magnet, ensuring the filter is securely and reliably installed during normal use. When the cover plate is open, the stronger attraction of the third magnet to the second magnet allows the filter to be pulled out directly, greatly improving the ease of filter removal.

Description

Technical Field

[0001] This utility model relates to a filter structure, and more particularly to an air conditioner filter structure with a quick-release filter screen, belonging to the field of air conditioning technology. Background Technology

[0002] In the existing air conditioner indoor unit filtration structure, the filter screen, as the core component for intercepting dust and impurities in the air, is usually installed in front of the evaporator and covered by a flip-up or removable cover. To ensure effective filtration of the incoming air, the filter screen needs to be installed in close contact with the indoor unit casing or evaporator. Therefore, the filter screen is usually fixed inside the indoor unit by means of clips and slots. In actual use, the filter screen needs to be disassembled and cleaned regularly to avoid dust accumulation and blockage affecting air intake efficiency and filtration effect. The current mainstream structure requires manual flipping first. After the cover is opened to the maximum angle, the operator needs to reach into the indoor unit to manually release the filter screen from the casing (such as prying open the clips or pulling out the filter screen from the slot).

[0003] Traditional structures have significant operational limitations. After the cover is opened, the filter screen is still inside the internal cavity. Due to the limited internal space of the internal unit and the limited opening angle of the cover, the operator's hand reach is limited. Especially for elderly users or those with limited hand mobility, the disassembly process is prone to jamming or accidental contact with other parts. Moreover, during installation, the insert on the filter screen frame needs to be inserted into the slot at the bottom of the internal unit housing. Since the internal unit is relatively high, it is difficult to visually determine the insertion point, making the insertion and positioning inconvenient.

[0004] To address these issues, an air conditioning filter structure with a quick-release filter screen was designed. Utility Model Content

[0005] The main purpose of this utility model is to provide an air conditioning filter structure with a quick-release filter screen to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] An air conditioning filter structure with a quick-release filter screen includes an indoor unit housing, a cover plate hinged to the outside of the indoor unit housing, and an evaporator installed inside the indoor unit housing.

[0008] A first magnet is provided at the bottom of the inner casing and below the evaporator. The outer side of the evaporator is covered with a filter screen. A plastic frame is fixed to the outer side of the filter screen. A second magnet is provided on the plastic frame to cooperate with the first magnet.

[0009] The bottom of the cover plate is provided with a pressure bar, and the bottom end of the pressure bar is provided with a third magnet piece. The magnetic attraction of the third magnet piece to the second magnet piece is greater than the magnetic attraction of the first magnet piece to the second magnet piece.

[0010] A connecting mechanism is provided between the pressure rod and the third magnet to facilitate the downward swing of the filter screen.

[0011] Preferably, the second magnet is fixed to both ends of the bottom of the plastic frame, and the bottom of the plastic frame is thickened.

[0012] Preferably, the connecting mechanism includes a mounting sleeve, a connecting rod, a groove, a rotating shaft, and a torsion spring. The bottom end of the pressure rod has a groove, and the connecting rod is inserted into the groove. A rotating shaft is rotatably installed between the two sides of the groove. The rotating shaft passes through the connecting rod and is fixedly connected to the connecting rod. Both ends of the rotating shaft are fitted with torsion springs, and the two ends of the torsion springs are fixedly connected to the connecting rod and the pressure rod, respectively. The bottom end of the connecting rod is fixed with a mounting sleeve, and the third magnet is located inside the mounting sleeve.

[0013] Preferably, the first magnet, the second magnet, and the third magnet are all permanent magnets, and the thickness of the third magnet is greater than the thickness of the first magnet.

[0014] Preferably, the plastic outer frame has a grid structure and is integrally molded to the edge of the filter screen through injection molding.

[0015] Preferably, the hinge between the cover and the inner casing is provided with a damping pivot, the rotation angle of the cover is 0°-90°, and the outer side wall of the cover is provided with anti-slip protrusions.

[0016] Preferably, a guide groove is provided inside the inner casing at the location corresponding to the filter installation position, and the filter is arc-shaped.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model adopts a magnetic structure to install the filter screen. The first magnetic piece on the inner housing and the second magnetic piece on the plastic outer frame of the filter screen cooperate with each other, replacing the traditional buckle and slot fixing method, which significantly simplifies the alignment operation during installation. At the same time, a third magnetic piece is provided on the pressure rod at the bottom of the cover plate. The magnetic attraction of the third magnetic piece to the second magnetic piece is greater than that of the first magnetic piece. When the cover plate is closed, the third magnetic piece and the second magnetic piece are attracted together. With the pressing action of the cover plate, the filter screen is ensured to be stable and reliable during normal use. When the cover plate is opened, the stronger attraction of the third magnetic piece to the second magnetic piece can be used to directly pull out the filter screen, which greatly improves the convenience of filter screen disassembly.

[0019] 2. This utility model provides a connecting mechanism consisting of an mounting sleeve, a connecting rod, a groove, a rotating shaft, and a torsion spring between the pressure rod and the third magnet. When the filter screen is pulled out, the third magnet can rotate and swing downward around the rotating shaft due to the gravity of the filter screen itself, making it easy for the operator to pick up the filter screen. After the filter screen is removed, the torsion spring can drive the third magnet to automatically reset, effectively enhancing the practicality of the structure. Attached Figure Description

[0020] Figure 1 This is a front view diagram of the unfolded state of this utility model;

[0021] Figure 2 This is a diagram of the filter screen of this utility model;

[0022] Figure 3 This is a bottom view of the cover plate of this utility model;

[0023] Figure 4 This is a diagram of the connection mechanism of this utility model.

[0024] In the diagram: 1. Indoor unit casing; 101. Cover plate; 102. Evaporator;

[0025] 2. First magnet; 3. Filter screen; 4. Plastic frame; 5. Second magnet; 6. Pressure rod; 7. Third magnet;

[0026] 8. Connecting mechanism; 801. Mounting sleeve; 802. Connecting rod; 803. Groove; 804. Rotating shaft; 805. Torsion spring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0028] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Example 1

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes an air conditioning filter structure with a quick-release filter screen, including an indoor unit housing 1, a cover plate 101 hinged to the outside of the indoor unit housing 1, and an evaporator 102 installed inside the indoor unit housing 1.

[0034] A first magnet 2 is provided at the bottom of the inner casing 1 and below the evaporator 102. The first magnet 2 has a size of 20mm×10mm×2mm and is attached to a groove in the bottom of the inner casing 1 with high-strength double-sided adhesive. A filter screen 3 is covered on the outside of the evaporator 102. A plastic frame 4 is fixed on the outside of the filter screen 3. A second magnet 5 that cooperates with the first magnet 2 is provided on the plastic frame 4.

[0035] The bottom of the cover plate 101 is provided with a pressure rod 6, and the bottom end of the pressure rod 6 is provided with a third magnet 7. The magnetic attraction force of the third magnet 7 on the second magnet 5 is greater than the magnetic attraction force of the first magnet 2 on the second magnet 5.

[0036] A connecting mechanism 8 is provided between the pressure rod 6 and the third magnet 7 to facilitate the downward swing of the filter screen 3.

[0037] When the filter screen 3 needs to be installed, align the outer plastic frame 4 of the filter screen 3 with the installation position inside the inner casing 1. The second magnet 5 on the plastic frame 4 and the first magnet 2 at the bottom of the inner casing 1 are attracted by magnetic attraction, thereby fixing the filter screen 3 to the outside of the evaporator 102, achieving a close fit between the filter screen 3 and the evaporator 102, and ensuring the filtration effect.

[0038] Then, close the cover plate 101. The pressure rod 6 at the bottom of the cover plate 101 rotates with the cover plate 101 to the outside of the filter screen 3. The third magnet 7 at the bottom of the pressure rod 6 attracts the second magnet 5 on the plastic outer frame 4, pressing and fixing the filter screen 3.

[0039] When it is necessary to remove the filter screen 3, flip the cover plate 101. The pressure rod 6 moves outward with the cover plate 101. The third magnet 7, with a greater attraction than the first magnet 2, drives the second magnet 5, the plastic frame 4, and the filter screen 3 to move synchronously, causing the second magnet 5 to disengage from the first magnet 2. The filter screen 3 is then carried out of the inner casing 1 along with the cover plate 101. At this time, the connecting mechanism 8 between the pressure rod 6 and the third magnet 7 comes into play, allowing the filter screen 3 to swing downward under gravity, making it convenient for the operator to directly pick up the filter screen 3.

[0040] Example 2

[0041] The solution in Example 1 will be further described below with reference to its specific working method.

[0042] like Figure 2 As shown, in a preferred embodiment, based on the above method, the second magnet 5 is further fixed to both ends of the bottom of the plastic outer frame 4. The bottom of the plastic outer frame 4 is thickened. The second magnet 5 has a size of 20mm×10mm×2mm and is embedded in the thickened areas at both ends of the bottom of the plastic outer frame 4. It is fixed to the plastic outer frame as a whole by injection molding and overmolding process. The thickened design enhances the structural strength of the plastic outer frame 4 and avoids deformation of the plastic outer frame 4 due to concentrated force when the second magnet 5 is attracted. The second magnet 5 distributed at both ends is attracted to the first magnet 2 on the inner casing 1, so that the filter screen 3 is subjected to balanced force and the installation is more stable.

[0043] like Figure 4 As shown, in a preferred embodiment, based on the above method, the connecting mechanism 8 further includes a mounting sleeve 801, a connecting rod 802, a groove 803, a rotating shaft 804, and a torsion spring 805. The bottom end of the pressure rod 6 has a groove 803, and the connecting rod 802 is inserted into the groove 803. The rotating shaft 804 is rotatably mounted between the two sides of the groove 803. The rotating shaft 804 passes through the connecting rod 802 and is fixedly connected to the connecting rod 802. Both ends of the rotating shaft 804 are fitted with torsion springs 805. The two ends of the torsion springs 805 are fixedly connected to the connecting rod 802 and the pressure rod 6, respectively. The bottom end of the connecting rod 802 is fixed with a mounting sleeve 801. The third magnet 7 is located inside the mounting sleeve 801. The third magnet 7 has a size of 20mm × 10mm × 3mm and is inserted into the mounting sleeve 801 by a tight fit. The mounting sleeve 801 is welded and fixed to the connecting rod 802.

[0044] After the filter screen 3 is pulled out of the inner housing 1 by the third magnet 7, the filter screen 3's own weight causes the connecting rod 802 to rotate downward around the rotating shaft 804 in the groove 803. At this time, the torsion spring 805 is twisted and stored, causing the mounting sleeve 801, the third magnet 7, and the filter screen 3 to swing downward synchronously. The operator can easily grab the filter screen 3 without having to go deep into the inner housing 1. After the filter screen 3 is removed, the torsion spring 805 releases its stored force, causing the connecting rod 802 to rotate in the opposite direction around the rotating shaft 804, so that the third magnet 7 returns to the state of being coaxial with the pressure rod 6, which is convenient for the next installation and use.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the first magnet 2, the second magnet 5 and the third magnet 7 are all permanent magnets. The thickness of the third magnet 7 is greater than the thickness of the first magnet 2, ensuring that the magnetic attraction of the third magnet 7 to the second magnet 5 is always greater than that of the first magnet 2, so that the filter screen 3 can be reliably taken out during disassembly.

[0046] like Figure 2 As shown, in a preferred embodiment, based on the above method, the plastic outer frame 4 is further formed into a grid structure, and the plastic outer frame 4 is integrally formed into the edge of the filter screen 3 by injection molding. The plastic outer frame 4 is grid-shaped and integrally formed with the filter screen 3 by injection molding, which reduces the weight and enhances the connection strength with the filter screen 3, thus preventing the filter screen 3 from falling off.

[0047] like Figure 1 As shown, in a preferred embodiment, based on the above method, a damping pivot is provided at the hinge of the cover plate 101 and the inner casing 1. The rotation angle of the cover plate 101 is 0°-90°, and the outer side wall of the cover plate 101 is provided with anti-slip protrusions. The damping pivot of the cover plate 101 allows it to be stably stopped at any angle of 0°-90° after it is opened, and the anti-slip protrusions make it easy to hold and flip.

[0048] like Figure 1 As shown, in a preferred embodiment, based on the above method, a guide groove is further provided inside the inner casing 1 at the installation position of the filter screen 3 to guide the filter screen 3 when it is inserted, making it easy to insert. The filter screen 3 is arc-shaped, and the arc-shaped filter screen 3 is adapted to the shape of the evaporator 102 to ensure maximum filtration area.

[0049] Example 3

[0050] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0051] Installation process: Align the filter screen 3 with the guide groove of the indoor unit housing 1, push the filter screen 3 and the plastic outer frame 4 into the interior of the indoor unit housing 1 and cover the surface of the evaporator 102. The second magnet pieces 5 at both ends of the bottom of the plastic outer frame 4 finally attract the first magnet piece 2 at the bottom of the inner part of the indoor unit housing 1, completing the initial fixation of the filter screen 3. Flip the cover plate 101 to the closed state. The cover plate 101 is held in position by the damping pivot. The third magnet piece 7 at the bottom of the pressure rod 6 also attracts the second magnet piece 5, further pressing the filter screen 3 on the outside of the evaporator 102 to ensure that the filter screen 3 is stable and does not shake when the air conditioner is running.

[0052] Usage: When the air conditioner is running, the air flows to the evaporator 102 after being filtered by the filter 3. The filter 3 intercepts dust and impurities. The arc-shaped filter 3 fits snugly against the evaporator 102 to ensure smooth air intake. The mesh-like plastic frame 4 does not obstruct airflow and provides structural support for the filter 3.

[0053] Disassembly and repositioning process: When cleaning the filter screen 3, hold the anti-slip protrusion of the cover plate 101 and flip it to 90° to open (the damping shaft maintains this angle). The pressure rod 6 moves with the cover plate 101. The third magnet 7 drives the second magnet 5, the plastic frame 4 and the filter screen 3 to detach from the first magnet 2 through strong attraction, so that the filter screen 3 is brought out of the inner housing 1. Under the action of gravity, the filter screen 3 drives the connecting rod 802 to rotate around the shaft 804 (the torsion spring 805 stores the force) and swings downward to a position that is easy to grasp. The operator removes the filter screen 3. After the filter screen 3 is removed, the torsion spring 805 drives the connecting rod 802, the mounting sleeve 801 and the third magnet 7 to reset. After cleaning, the installation process is repeated to fix the filter screen 3 again.

[0054] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. An air conditioning filter structure with a quick-release filter screen, comprising an indoor unit housing (1), a cover plate (101) hinged to the outside of the indoor unit housing (1), and an evaporator (102) installed inside the indoor unit housing (1); Its features are: A first magnet (2) is provided at the bottom of the inner casing (1) and below the evaporator (102). A filter screen (3) is covered on the outside of the evaporator (102). A plastic frame (4) is fixed on the outside of the filter screen (3). A second magnet (5) that cooperates with the first magnet (2) is provided on the plastic frame (4). The bottom of the cover plate (101) is provided with a pressure rod (6), and the bottom end of the pressure rod (6) is provided with a third magnet (7). The magnetic attraction force of the third magnet (7) on the second magnet (5) is greater than the magnetic attraction force of the first magnet (2) on the second magnet (5). A connecting mechanism (8) is provided between the pressure rod (6) and the third magnet (7) to facilitate the downward swing of the filter screen (3).

2. The filter structure of claim 1, wherein: The second magnet piece (5) is fixed to both ends of the bottom of the plastic frame (4), and the bottom of the plastic frame (4) is thickened.

3. The filter structure of claim 1, wherein: The connecting mechanism (8) includes a mounting sleeve (801), a connecting rod (802), a groove (803), a rotating shaft (804), and a torsion spring (805). The bottom end of the pressure rod (6) is provided with a groove (803). The connecting rod (802) is inserted into the groove (803). The rotating shaft (804) is rotatably installed between the two sides of the groove (803). The rotating shaft (804) passes through the connecting rod (802) and is fixedly connected to the connecting rod (802). Both ends of the rotating shaft (804) are fitted with torsion springs (805). The two ends of the torsion springs (805) are fixedly connected to the connecting rod (802) and the pressure rod (6) respectively. The bottom end of the connecting rod (802) is fixed with a mounting sleeve (801). The third magnet (7) is located inside the mounting sleeve (801).

4. The filter structure of claim 1, wherein: The first magnet (2), the second magnet (5) and the third magnet (7) are all permanent magnets, and the thickness of the third magnet (7) is greater than the thickness of the first magnet (2).

5. An air conditioning filter structure with a quickly detachable filter screen according to claim 1, characterized in that: The plastic frame (4) has a grid structure and is integrally formed on the edge of the filter screen (3) by injection molding.

6. The filter structure of claim 1, wherein: A damping pivot is provided at the hinge of the cover plate (101) and the inner casing (1). The rotation angle of the cover plate (101) is 0°-90°, and the outer side wall of the cover plate (101) is provided with anti-slip protrusions.

7. The filter structure of claim 1, wherein: The inner casing (1) has a guide groove at the installation position of the filter (3), and the filter (3) is arc-shaped.

Images