Filter screen assembly convenient to assemble and disassemble and air conditioner

Abstract

The utility model discloses a filter screen assembly convenient to assemble and disassemble and an air conditioner. The filter screen assembly convenient to assemble and disassemble comprises at least one foldable filter screen module, a frame of the foldable filter screen module is formed by oppositely hinging vertical rods of an upper U-shaped filter screen support and a lower U-shaped filter screen support, and a limiting mechanism for limiting relative rotation of the upper U-shaped filter screen support and the lower U-shaped filter screen support is further arranged on the foldable filter screen module. For two or more foldable filter screen modules, the adjacent filter screen modules can be connected into a whole through hook connection. During assembly and disassembly, the clamping hooks are contacted for connection, the upper U-shaped filter screen bracket and the lower U-shaped filter screen bracket rotate around the hinged shaft to reduce the height, and then the filter screen assembly is pushed in or pulled out from the front surface of the return air inlet of the air duct machine to finish assembly or disassembly. Operation is convenient and reliable, and the device adapts to the environment with narrow peripheral installation space of the ducted air conditioner.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtration of air-conditioning units, in particular to an easily assembled and disassembled filter assembly installed on an air duct unit and an air conditioner with the filter assembly. Background Art

[0002] At present, many commercial duct air conditioners on the market use rectangular filter screen assemblies. For larger filter screen assemblies, a reinforcing rod structure can be set in the middle of the frame, and the filter screen is set on the frame to form the rectangular filter screen assembly. For environments where the installation space around the duct air conditioner is narrow, during installation, the operator can only be located on one side of the duct air conditioner and insert the filter screen assembly into the guide groove of the duct air conditioner pipe perpendicular to the axis of the duct air conditioner so as to close the cross section of the return air duct and achieve filtration of the return air. This filter screen assembly has a simple structure, is quick to assemble, and is also convenient to install on the duct air conditioner. However, for duct air conditioners with a flat and long cross-section, that is, duct air conditioners with a long lateral dimension, which are also in an environment where the installation space around the duct air conditioner is narrow, during installation, multiple filter screen assemblies need to be arranged one by one and inserted into the return air outlet to achieve filtration. However, this combination of multiple filter assemblies lacks a connection structure between adjacent filter assemblies to facilitate assembly and disassembly. When the filter assembly needs to be removed for cleaning after a period of operation, the space surrounding the duct unit limits the filter assembly on the side of the duct unit away from the operator, i.e., the filter assembly at the far end of the duct unit. This means that the operator often cannot reach and remove the filter assembly. Therefore, the operator must use a tool to pull out the filter assembly at the far end. In this case, careless operation could damage the filter assembly, rendering it useless. Furthermore, when removing the filter assembly at the far end, the operator could easily be cut by the edge of the duct unit's sheet metal, creating a safety hazard.

[0003] Furthermore, in some extremely small installation spaces, workers can only install or remove the filter assembly from the front of the ducted air conditioner's return air inlet. This means they must insert the upper and lower crossbeams of the filter assembly into the guide grooves of the return air frame from the front of the return air inlet for installation, which is very inconvenient. Especially when the filter assembly is installed and the system starts operating, the pressure of the airflow within the ducted air conditioner often causes the filter assembly to move and fail to completely seal the cross-section of the ducted air conditioner's return air inlet, thus reducing filtration quality.

[0004] Therefore, how to overcome the defect of inconvenient assembly and disassembly of the filter assembly in the existing duct machine with narrow surrounding space and long cross section is a problem that needs to be solved as soon as possible in this field. Utility Model Content

[0005] The utility model provides a filter assembly that is easy to assemble and disassemble and an air conditioner having the filter assembly in order to solve the technical problem that the filter assembly in the existing duct machine with narrow surrounding space and long cross section is inconvenient to assemble and disassemble.

[0006] The utility model provides a filter screen component that is easy to assemble and disassemble. The filter screen component comprises at least two filter screen modules. The filter screen modules are arranged transversely, and two adjacent filter screen modules are connected via a detachable connecting device.

[0007] Preferably, the detachable connection device includes a transverse hook with one end hinged to a vertical rod of a filter module, and a clamping column provided on the vertical rod of an adjacent filter module to form a hook connection with the transverse hook.

[0008] Preferably, at least one reinforcing cross bar is provided in the middle of the filter module.

[0009] The utility model provides another foldable filter assembly that is easy to assemble and disassemble, including at least one foldable filter module. The frame of the foldable filter module is composed of vertical rods of two upper and lower U-shaped filter brackets that are relatively hinged. The foldable filter module is also provided with a limiting mechanism that limits the relative rotation of the upper and lower U-shaped filter brackets.

[0010] Preferably, the vertical rods on both sides of the two U-shaped filter screen brackets are hinged to form a frame through a middle vertical rod.

[0011] Preferably, it also includes two upper and lower intermediate horizontal bars, each of which has a core shaft at both ends. The core shaft of the upper intermediate horizontal bar is hinged to the upper end of the corresponding intermediate vertical bar and the vertical bar of the upper U-shaped filter bracket, while the core shaft of the lower intermediate horizontal bar is hinged to the lower end of the corresponding intermediate vertical bar and the vertical bar of the lower U-shaped filter bracket, and the end of the core shaft is provided with a sealing cap.

[0012] Preferably, there are two foldable filter modules, and the upper end of the middle vertical rod on one side of each foldable filter module is hinged with a horizontal hook and the lower end is provided with a post; the lower end of the middle vertical rod on the other side of the same foldable filter module is hinged with a horizontal hook and the upper end is provided with a post; when the two foldable filter modules are placed side by side, the horizontal hook forms a hook connection with the post on the corresponding middle vertical rod of the adjacent foldable filter module.

[0013] Preferably, after the vertical rod and the middle vertical rod of the U-shaped filter screen bracket are hinged to the core shaft of the middle horizontal rod end, the vertical width of the horizontal hook body is greater than the distance from the edge of the middle vertical rod end to the edge of the vertical rod end of the U-shaped filter screen bracket, thereby constituting a limiting mechanism for limiting the relative rotation of the vertical rod and the middle vertical rod of the U-shaped filter screen bracket.

[0014] Preferably, the vertical width of the transverse hook body is greater than 30% to 50% of the distance from the edge of the middle vertical rod end to the edge of the vertical rod end of the U-shaped filter bracket.

[0015] Preferably, the connection between the transverse hook and the post is an interference fit.

[0016] Preferably, the limiting mechanism may also include a longitudinal hook with one end hinged to a vertical rod, and a longitudinal clamping column provided on the other vertical rod to form a hook connection with the longitudinal hook.

[0017] The utility model also provides an air conditioner, which comprises the filter assembly proposed by the utility model and which is easy to assemble and disassemble.

[0018] Existing flat duct air conditioners require multiple filter modules for filtering. When the installation space around the duct air conditioner is limited, the multiple filter modules can typically only be inserted one by one from one side of the duct air conditioner. When cleaning and maintenance are required, the multiple filter modules must be removed one by one from the side of the duct air conditioner. This can easily lead to various problems when removing the filter modules on the side of the duct air conditioner that is farthest from the operator. To address these issues, the present invention provides a filter assembly that is easy to assemble and disassemble, comprising at least two filter modules arranged horizontally, with adjacent filter modules connected by a detachable connecting device. During disassembly, the multiple filter modules can be pulled out as a whole toward one side. When a filter module is removed, the detachable connecting device is opened, releasing the adjacent filter modules, allowing the filter modules to be removed one by one. This effectively solves the problem of inconvenience in removing the filter modules at the far end when disassembling multiple filter modules from one side due to the limited installation space. Crucially, the detachable connection mechanism utilizes a hook-type connection, making it extremely easy to connect and disconnect. For installation, one filter module is inserted before connecting the next. For removal, one filter module is pulled out and the hook connection is released. This allows for installing and removing filter modules one by one, making it particularly suitable for working environments with limited space. It also facilitates transporting separated filter modules for cleaning or reinstallation.

[0019] In another case, when the reserved space on the left and right sides of the duct air conditioner is very narrow, the existing plug-in filter assembly cannot be installed or removed from one side of the duct air conditioner, so the only option is to install or remove it from the front of the return air outlet. Since the height of the plug-in filter assembly frame is constant, it will be limited by the height of the upper and lower guide grooves of the return air frame of the duct air conditioner, making it inconvenient to install or remove it from the front of the return air outlet. To solve this problem, the utility model provides another filter assembly that is easy to install and remove, which can be a filter module or composed of two or more filter modules. The frame of the filter module is composed of two upper and lower U-shaped filter brackets with vertical rods that are relatively hinged, so that the two U-shaped filter brackets can rotate relative to each other. The two relatively hinged vertical rods are also provided with a limiting mechanism that limits the relative rotation of the two vertical rods. During installation, the upper and lower U-shaped filter brackets are rotated about the hinge axis to lower the height. The filter assembly is then pushed in from the front of the ducted air conditioner's return air outlet, with the upper and lower crossbeams of the filter assembly respectively inserted into the upper and lower guide grooves of the return air frame. Finally, the restraining mechanism is engaged, flattening the filter assembly and covering the entire cross-section of the return air outlet. The restraining mechanism also prevents the upper and lower U-shaped brackets from rotating relative to each other during operation, potentially rendering the filter ineffective. During disassembly, the restraining mechanism is first released, allowing the upper and lower U-shaped brackets to rotate relative to each other and fold, releasing the upper and lower crossbeams of the filter assembly from the upper and lower guide grooves of the return air frame. The filter assembly can then be removed from the front of the return air outlet. The modular, foldable filter assembly structure ensures convenient and reliable installation and disassembly. For larger, flat ducted air conditioners, two or more filter modules are used for filtration. The restraining mechanism employed in this utility model not only prevents the upper and lower U-shaped brackets of the filter module from rotating relative to each other, maintaining the filter module flat, but also serves to connect adjacent filter modules. Specifically, the restricting mechanism is a transverse hook mechanism, and the vertical width H of the hook body is greater than the distance L from the end edge of the middle vertical rod to the end edge of the vertical rod of the U-shaped filter bracket. When the two filter assemblies are unfolded and placed side by side, the transverse hook hinged on the middle vertical rod of one filter module is hooked onto the latch post on the middle vertical member of the other filter module. This hook not only connects the two adjacent filter modules, but also uses its vertical height to restrict the vertical rotation and folding of the filter modules relative to each other, thus ensuring the proper function of the filter assembly. Similarly, after releasing the hook connection, the filter assembly is pulled forward, causing the bent upper and lower crossbars to disengage from the upper and lower guide grooves of the return air frame, allowing the filter assembly to be removed from the front of the return air vent. This multi-module foldable filter assembly structure is convenient and reliable to install and remove, and is suitable for ducted air conditioners with larger cross-sections. It effectively solves the problem of inconvenient installation and removal of the filter assembly from the front of the return air vent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a filter assembly in which two rigid filter modules are detachably connected to form an integral whole;

[0021] Figure 2 A schematic diagram of a foldable filter module having upper and lower middle cross bars;

[0022] Figure 3 for Figure 1 A partial enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 A partial enlarged view of point G in the middle;

[0024] Figure 5 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 6 for Figure 2 A partial enlarged view of point C in the middle;

[0026] Figure 7 for Figure 2 A three-dimensional diagram of the U-shaped filter bracket;

[0027] Figure 8 for Figure 2 A three-dimensional diagram of the middle crossbar in the figure;

[0028] Figure 9 for Figure 2 The middle vertical pole stereogram in the figure;

[0029] Figure 10 for Figure 2 A three-dimensional diagram of the horizontal hook in FIG.

[0030] Figure 11 for the reason Figure 2 A schematic diagram of a foldable filter assembly in which two foldable filter modules are detachably connected to form an integral body;

[0031] Figure 12 for Figure 11 An enlarged view of the hook at D in the middle, showing the hook connected;

[0032] Figure 13 for Figure 11 Enlarged view of the hook at Y in the middle after the hook connection has been released;

[0033] Figure 14 Schematic diagram of the vertical width H of the transverse hook body and the distance L from the edge of the middle vertical rod end to the edge of the vertical rod end of the U-shaped filter bracket;

[0034] Figure 15 Schematic diagram of the distance L from the lower end edge of the middle vertical rod 1 to the end edge of the vertical rod of the U-shaped filter bracket 4;

[0035] Figure 16This is a schematic diagram of a third embodiment of the utility model, in which a foldable filter assembly is located in the return air inlet and is pulled out from one side of the ducted air conditioner;

[0036] Figure 17 This is a schematic diagram of a foldable filter assembly according to a third embodiment of the present invention, which is located in the return air inlet and is pulled out from the front of the return air inlet.

[0037] In the figure: 100 filter module, 101 filter module vertical rod, 200 foldable filter module, 300 detachable filter assembly, 1 middle vertical rod, 2 lower middle horizontal rod, 21 upper middle horizontal rod,

[0038] 3 horizontal hooks, 4 U-shaped filter bracket, 5 clamping columns, 6 sealing caps, 7 core shafts, 8 hinge shafts,

[0039] 9. Upper and lower guide grooves of return air frame, 10. Return air frame. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1 As shown, the first embodiment of the present invention provides a filter assembly that is easy to assemble and disassemble, including two filter modules 100 formed with a rigid frame. The two filter modules 100 are arranged horizontally, and the two adjacent filter modules are connected by a detachable connecting device. That is, the filter modules are connected side by side, and several filter modules can be appropriately selected according to the size of the return air outlet cross section to form a rigid filter assembly, so that the filter assembly can close the entire cross section of the return air outlet. The rigid filter assembly provided in this embodiment is suitable for environments with narrow installation space around the duct machine. Please refer to Figure 15 , the filter assembly can insert a filter module 100 into the guide groove 9 of the return air frame 10 from one side of the return air outlet of the duct machine, and then connect the next filter module 100 through the detachable linking device and push it into the guide groove until the entire installation is completed. During disassembly, since the adjacent filter modules are connected together, pull out a filter module to one side, and all subsequent filter modules will move to one side. To pull out a filter module, first release the detachable connection, then remove it, and then pull out the subsequent filter modules. Repeat the above actions until all the filter modules are pulled out. The use of a detachable connecting device can easily and quickly connect or disassemble the filter modules one by one, which is conducive to transporting the filter modules out for cleaning after removal or pulling them in for installation after cleaning. It is particularly suitable for environments with narrow working space on the side of the duct machine.

[0042] The detachable connection device in this embodiment is preferably a hook connection. Figure 3 、 Figure 10As shown, the hook connection includes a transverse hook 3 connected to the left filter module vertical rod 101 through a hinge shaft 8 at one end, and a post 5 provided on the right filter module vertical rod 101. The transverse hook 3 rotates around its hinge shaft 8 and snaps onto the post 5 on the right to form a hook connection. The hook arc of the opening of the transverse hook 3 is an interference fit with the hook of the post 5, and the interference fit makes the hook connection stable and reliable. As needed, multiple hook connections can be provided in the vertical direction. The hook connection has a simple structure and is easy to manufacture. The hook connection is reliable and stable, and it is very convenient to connect or release the hook connection with the hook.

[0043] For larger filter modules, one or two reinforcing crossbars (not shown) are typically installed in the middle of the filter module to enhance the strength of the filter frame. In this case, the detachable connection device can also hinge one end of the transverse hook 3 to the reinforcing crossbar, and attach the clamping post 5 to the reinforcing crossbar of the adjacent filter module, forming a hook connection between the transverse hook 3 and the clamping post 5. Multiple such hook connections can be provided along the vertical axis as needed.

[0044] The second embodiment of the present invention provides a foldable filter assembly that is easy to assemble and disassemble, which is a foldable filter module. Depending on the size of the return air outlet cross section, it can also be composed of several foldable filter modules arranged side by side. The frame of the foldable filter module consists of two upper and lower U-shaped filter brackets 4 (such as Figure 7 The upper and lower U-shaped filter supports 4 are hingedly connected (as shown). The upper and lower U-shaped filter supports 4 can rotate and fold relative to each other about their hinge axes. A restraining mechanism (not shown) is also provided on the hinged vertical supports of the U-shaped filter support 4 to limit relative rotation of the two vertical supports of the U-shaped filter support 4. This foldable filter module has a simple structure and low cost, making it suitable for smaller foldable filter assemblies.

[0045] This foldable structure is suitable for environments where the working space around the ducted air conditioner is very narrow, so the foldable filter assembly needs to be installed or removed from the front of the return air outlet. That is, during installation, the slightly bent foldable filter module is first pushed into the return air frame from the front of the return air outlet, and then the upper and lower U-shaped filter modules are unfolded into a plane. Finally, the limiting mechanism is used to limit the relative rotation of the two vertical rods of the upper and lower U-shaped filter brackets 4, so that they cannot automatically escape from the return air outlet. When removing the foldable filter module, the limiting mechanism is first released, so that the upper and lower U-shaped filter brackets 4 rotate and fold relative to each other, thereby lowering the height of the foldable filter module, so that the upper and lower edges of the foldable filter module automatically escape from the guide grooves of the return air frame, and then it can be removed from the front of the return air outlet, which is convenient and quick.

[0046] For a foldable filter screen module with a larger size, the vertical bars on both sides of the U-shaped filter screen bracket 4 of this embodiment can each be connected by a transition link - the middle vertical bar 1 (such as Figure 9 As shown) is hinged into a higher frame, that is, the vertical rods of the upper and lower U-shaped filter screen brackets 4 can rotate relative to the middle vertical rod. In order to strengthen the strength of the filter screen module, one or two reinforcing cross bars can be set in the middle of the filter screen module. Figure 2 As shown, the foldable filter screen module 200 is further provided with an upper middle cross bar 21 and a lower middle cross bar 2 (as shown in FIG. Figure 8 As shown), both ends of the upper and lower middle crossbars are provided with a core shaft 7, and the middle vertical rod 1 and the vertical rod of the U-shaped filter screen bracket 4 are hinged with the core shaft 7 at the end of the middle crossbar, that is, the U-shaped filter screen bracket 4 can rotate around the core shaft 7 of the middle crossbar relative to the middle vertical rod 1. Figure 5 As shown, the upper end of the right middle vertical rod 1 and the lower end of the right side vertical rod of the upper U-shaped filter screen bracket 4 are inserted into the core shaft 7 at the right end of the upper middle cross bar 21 to form a hinge. In order to prevent the vertical rod and the middle vertical rod 1 of the U-shaped filter screen bracket 4 from sliding out of the core shaft 7, a limiting cap 6 is provided at the end of the core shaft 7 of the middle cross bar. For example, a screw can be installed and the screw head can be used as a cap for limiting. This structure is convenient for assembly and disassembly. A cap 6 can also be directly welded to the end of the core shaft 7 for limiting, which is simple and reliable. As long as a limiting structure is set at the end of the core shaft 7, the effect of the cap 6 can be achieved. Similarly, the core shaft 7 at the other ends of the upper and lower middle cross bars is similar to the hinge of the corresponding middle vertical rod 1 and the vertical rod end of the U-shaped filter screen bracket 4. Figure 5 Please combine the structure shown in Figure 2 shown.

[0047] In the various structures of the second embodiment of the present invention described above, the limiting mechanism comprises a longitudinal hook hinged at one end to the vertical rod of one U-shaped filter support 4, and a post (not shown in the figure) provided on the corresponding vertical rod of the other U-shaped filter support 4. The arc of the longitudinal hook opening forms an interference fit with the hook of the post, which ensures a stable and reliable hook connection.

[0048] When the upper and lower U-shaped filter supports 4 of this embodiment are unfolded into a flat surface, the longitudinal hooks engage the latching posts, forming a hook connection that prevents the upper and lower U-shaped filter supports 4 from rotating or folding relative to each other, ensuring proper filtration. To remove the filter, the hook connection is first released, and then the upper and lower U-shaped filter supports 4 are pulled outward, rotating and folding relative to the central vertical rod, allowing the foldable filter module 200 to be removed directly from the front of the return air vent. This longitudinal hook connection is stable and reliable.

[0049] like Figure 11As shown, the third embodiment of the present invention provides a foldable filter assembly that is easy to assemble and disassemble. The foldable filter assembly 300 is composed of Figure 2 The two foldable filter screen modules 200 shown are connected side by side. Figure 9 As shown, in addition to the hinge holes at both ends of the middle vertical rod 1, one end of the outer side of the middle vertical rod 1 is connected to a horizontal hook 3 through a hinge shaft 8, and the other end is provided with a clamping column 5 ( Figure 10 The upper end of the middle vertical rod 1 on the left side of each foldable filter module 200 is hinged to a horizontal hook 3 on the outside side and a clamping column 5 is provided at the lower end (as shown). Figure 4 the same foldable filter module on the right side of the middle vertical rod 1 at the lower end of the outward side hinged to a horizontal hook 3 and the upper end is provided with a card column 5 (as Figure 6 、 Figure 5 shown).

[0050] When two foldable filter modules 200 are placed side by side ( Figure 11 As shown), the horizontal hook 3 on the right middle vertical rod 1 forms a hook connection with the card column 5 at the lower end of the left middle vertical rod 1 in the adjacent foldable filter module on the right (as shown Figure 12 In addition, the horizontal hook 3 on the upper end of the middle vertical rod 1 on the left side of the adjacent foldable filter module on the right side rotates clockwise and hooks onto the upper end of the middle vertical rod 1 on the right side of the foldable filter module on the left side (see FIG. Figure 13 As shown), the two foldable filter screen modules are conveniently connected into one through the above-mentioned hook connection. The foldable filter screen assembly 300 of this structure is suitable for situations where the transverse cross-section of the return air outlet is large. The hook arc of the opening of the transverse hook 3 in this embodiment is an interference fit with the hook of the clamping column 5, and the interference fit makes the hook connection stable and reliable. In this embodiment, the sealing cap 6 provided at the end of the middle cross bar core shaft 7 can also adopt a countersunk structure, so that the gap between the two adjacent foldable filter screen modules can be minimized after the close hook connection, please refer to Figure 12 All the clamping posts 5 of the present invention adopt a T-shaped cross-section structure, which makes it difficult for the clamping hook to come out after being connected, thereby ensuring the stability and reliability of the clamping hook connection.

[0051] like Figure 11 As shown, the third embodiment of the present invention provides a foldable filter assembly 300 that is easy to assemble and disassemble. In addition to being able to connect two adjacent foldable filter modules by hook, the transverse hook 3 can also connect the two adjacent foldable filter modules by hook. Figure 12As shown, when the horizontal hook 3 is hooked onto the right side post 5 (hook connection), the horizontal hook 3 can also use the vertical width H of its body to limit the relative rotation and folding of the middle vertical rod 1 and the vertical rod of the U-shaped filter bracket 4. That is, the horizontal hook 3 in this embodiment also has the function of limiting the relative rotation of the two side vertical rods connected by the hinge. Figure 14 As shown, after the middle vertical rod 1 and the vertical rods of the U-shaped filter bracket 4 are hinged to the core shaft 7 of the crossbar end, the vertical width H of the transverse hook 3 body is greater than the distance L from the edge of the lower end of the middle vertical rod 1 to the edge of the vertical rod end of the U-shaped filter bracket 4. That is, by ensuring that H is greater than L, the rotation of the middle vertical rod 1 relative to the vertical rod of the U-shaped filter bracket 4 can be restricted to ensure that the foldable filter assembly 300 is in an unfolded plane state. For larger filter assemblies, in order to ensure that the restriction and connection are stable and reliable, the preferred value of the vertical width H of the transverse hook body of this embodiment is greater than 30% to 50% of the distance L from the edge of the end of the middle vertical rod 1 to the edge of the vertical rod end of the U-shaped filter bracket 4, that is, H = 1.3L to 1.5L. As Figure 15 As shown, the distance L is equal to the vertical distance L2 from the center of the hinge hole at the end of the middle vertical rod 1 to its edge plus the vertical distance L1 from the center of the hinge hole at the end of the vertical rod of the U-shaped filter bracket 4 to its edge, that is, L = L1 + L2. The size of L1 and L2 is related to the diameter d of the hinge hole (the diameter of the core shaft 7), and the preferred value is L1 = L2 = approximately 1.5d.

[0052] The values of H, L1, and L2 can also be selected differently depending on the actual situation. When the horizontal hook 3 is rotated to the left horizontal position, the hook connection is released, and the middle vertical rod 1 can be rotated relative to the vertical rod of the U-shaped filter bracket 4 for disassembly. In this embodiment, the hook device with such a structure can be used to perform a horizontal connection to connect two side-by-side foldable filter modules into one body, and can also limit the relative rotation between the two hinged vertical rods, so that the foldable filter assembly 300 is in an expanded flat state, ensuring normal operation. This hook device achieves two goals at once, reducing the number of connecting devices and facilitating operation.

[0053] The foldable filter assembly provided by the utility model is as follows Figure 2 、 Figure 11 The structure shown is suitable for situations where the side space of the ducted air conditioner is narrow, and the foldable filter assembly can only be installed or removed from the front of the return air outlet. Figure 11 As shown, take the foldable filter assembly 300 composed of two foldable filter modules placed side by side as an example, Figure 17As shown, after releasing the hook connection between adjacent foldable filter modules, grasp the middle horizontal bar of a foldable filter module and pull it toward the return air outlet in the direction F. The U-shaped filter bracket 4 rotates and folds relative to the middle vertical bar 1. The upper and lower edges of the filter module will then disengage the upper and lower guide grooves 9 of the return air frame 10, allowing the filter module to be removed. Repeat the above steps to remove all filter modules. To reinstall the foldable filter assembly 300, simply reverse the process.

[0054] If a certain space is reserved beside the duct machine, such as Figure 16 As shown, for the foldable filter assembly 300, first unfold the foldable filter module, connect the foldable filter modules one by one from the return air fan side, and push them into the return air outlet until the return air outlet of the duct machine is completely covered; it can also be pulled out in direction E from the return air fan side, and the hook connections between the foldable filter modules are released one by one, and they are removed and transported away.

[0055] The utility model also provides an air conditioner, which comprises filter screen components of various structures provided by the utility model and which are easy to assemble and disassemble.

[0056] The above description is only a specific embodiment of the present invention. It should be pointed out that any modifications, equivalent replacements and changes made within the spirit and framework of the present invention should be included in the scope of protection of the present invention.

Claims

1. A filter assembly that is easy to assemble and disassemble, comprising at least two filter modules, characterized in that: The filter modules are arranged horizontally, and two adjacent filter modules are connected by a detachable connecting device; the detachable connecting device includes a horizontal hook with one end hinged on a vertical rod of the filter module, and a clamping column provided on the vertical rod of the adjacent filter module to form a hook connection with the horizontal hook.

2. The filter assembly that is easy to assemble and disassemble according to claim 1, characterized in that: At least one reinforcing cross bar is provided in the middle of the filter module.

3. A filter assembly that is easy to assemble and disassemble, characterized in that: It includes at least one foldable filter module, the frame of which is composed of vertical rods of upper and lower U-shaped filter brackets hinged relative to each other. The foldable filter module is also provided with a limiting mechanism for limiting the relative rotation of the upper and lower U-shaped filter brackets.

4. The filter assembly that is easy to assemble and disassemble according to claim 3, characterized in that: The vertical rods on both sides of the upper and lower U-shaped filter screen brackets are respectively hinged through a middle vertical rod to form a foldable frame.

5. The filter assembly that is easy to assemble and disassemble according to claim 4, characterized in that: It also includes two upper and lower middle cross bars, each of which is provided with a core shaft at both ends. The core shaft of the upper middle cross bar is hinged to the upper end of the corresponding middle vertical bar and the vertical bar of the upper U-shaped filter bracket, while the core shaft of the lower middle cross bar is hinged to the lower end of the corresponding middle vertical bar and the vertical bar of the lower U-shaped filter bracket, and a sealing cap is provided at the end of the core shaft.

6. The filter assembly that is easy to assemble and disassemble according to claim 5, characterized in that: There are two foldable filter modules, and the upper end of the middle vertical rod on one side of each foldable filter module is hinged with a horizontal hook and the lower end is provided with a clamping column; the lower end of the middle vertical rod on the other side of the same foldable filter module is hinged with a horizontal hook and the upper end is provided with a clamping column; when the two foldable filter modules are placed side by side, the horizontal hook forms a hook connection with the clamping column on the corresponding middle vertical rod of the adjacent foldable filter module.

7. The filter assembly that is easy to assemble and disassemble according to claim 6, characterized in that: After the core shaft of the middle horizontal rod end is hinged to the vertical rod and the middle vertical rod of the U-shaped filter screen bracket, the vertical width of the horizontal hook body is greater than the distance from the edge of the middle vertical rod end to the edge of the vertical rod end of the U-shaped filter screen bracket, thereby constituting a limiting mechanism that limits the relative rotation of the vertical rod and the middle vertical rod of the U-shaped filter screen bracket.

8. The filter assembly that is easy to assemble and disassemble according to claim 7, characterized in that: The vertical width of the transverse hook body is greater than 30% to 50% of the distance from the edge of the middle vertical rod end to the edge of the vertical rod end of the U-shaped filter bracket.

9. The filter assembly that is easy to assemble and disassemble according to claim 7, characterized in that: The connection between the transverse hook and the clamping column in the limiting mechanism is an interference fit.

10. The filter assembly that is easy to assemble and disassemble according to any one of claims 3 to 6, characterized in that: The limiting mechanism includes a longitudinal hook with one end hinged on the vertical rod of a U-shaped filter bracket, and a clamping column provided on the vertical rod on the same side of another U-shaped filter bracket and connected to the longitudinal hook.

11. An air conditioner, characterized in that: The invention comprises a filter assembly that is easy to assemble and disassemble as described in any one of claims 1 to 10.

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