A foldable and deployable NCCO nanofiber cartridge assembly and method of deployment thereof

Abstract

The application provides a foldable and unfoldable NCCO nanometer filter element assembly and an unfolding method thereof, and the assembly comprises: a piston communication element, which is fitted and installed into a vertical pipe, and the bottom of the piston communication element is elastically connected with the lower end of the vertical pipe; a stop ring, which is fixedly installed into the upper end of the vertical pipe; a flexible nanometer photocatalysis assembly, the middle part of which is connected with the upper end of the piston communication element; four elastic hinged seats, which are annularly arranged and installed into the piston communication element; and a carrier rod, one end of which is connected with the elastic hinged seat, and the other end of which is connected with the corner of the flexible nanometer photocatalysis assembly. The method comprises the following steps: air pressure driving, in-place blocking, elastic unfolding and storage folding. By adopting the piston communication element, the stop ring, the flexible nanometer photocatalysis assembly, the elastic hinged seat and the carrier rod, automatic unfolding is realized by means of blowing air pressure when the air purifier is running, and automatic storage is realized when the air purifier is not running.

Description

Technical Field

[0001] This invention relates to a foldable and deployable NCCO nanofilter assembly and its deployment method. Background Technology

[0002] NCCO is a new type of air purification technology, short for "nano-photocatalytic formaldehyde removal technology". It has the advantages of high efficiency, safety and greenness, and is widely used in the field of indoor air purification, such as in air purifiers.

[0003] As a new technology, NCCO (Non-Catalytic Co-filter) is a feature lacking in older air purifiers. Users wish to modify their existing air purifiers to include this function, but currently, there is a lack of external filter components with this feature on the market. Furthermore, in existing technologies, NCCO nano-filter components are generally placed inside the air purifier, as in the patent document "CN206755403U Photocatalytic Air Disinfection Purifier," which places a nano-photocatalytic mesh inside the air purifier. However, due to the limited space inside the air purifier, the filtration surface area of ​​the nano-photocatalytic mesh may be insufficient, resulting in potentially poor filtration efficiency. Summary of the Invention

[0004] In order to solve the technical problem of insufficient filtration surface caused by the internal structure of an air purifier, this invention provides a foldable and deployable NCCO nanofilter assembly and its deployment method.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions: This invention provides a foldable and deployable NCCO nanofiber filter assembly, including a vertical tube whose lower end connects to the air outlet of an air purifier, and further including: a piston connector, which is fitted into the interior of the vertical tube and whose bottom is elastically connected to the lower end of the vertical tube; a retaining ring, which is fixedly installed at the upper end of the vertical tube; a flexible nanophotocatalytic component, the middle part of which is connected to the upper end of the piston connector; four elastic hinge seats, which are arranged in a ring array on the piston connector; and a carrier rod, one end of which is connected to the elastic hinge seat and the other end of which is connected to a corner of the flexible nanophotocatalytic component.

[0006] Preferably, the piston connecting member includes a piston sleeve and a support tube; the piston sleeve is fixedly sleeved to the bottom end of the support tube, and the edge of the piston sleeve is in close contact with the inner wall of the vertical tube; the lower end of the support tube is open, and the upper end is closed.

[0007] Preferably, a baffle is provided below the support tube, a second rubber washer is installed at the top edge of the baffle, and a connecting rod is fixed to both sides of the baffle. The upper and lower parts of the piston sleeve are respectively provided with an upper hole and a lower hole, and the upper hole and the lower hole are connected. The connecting rod passes through the lower hole and is clearance-fitted with the upper hole. The diameter of the lower hole is larger than that of the upper hole, and a first helical spring is provided in the lower hole. The connecting rod is elastically connected to the piston sleeve through the first helical spring.

[0008] Preferably, at least one second helical spring is provided at the bottom of the piston sleeve, the top end of the second helical spring is fixedly connected to the bottom surface of the piston sleeve, and a connecting strip is fixedly connected to the bottom end of the second helical spring. The connecting strip is fixedly installed on the lower inner wall of the vertical tube.

[0009] Preferably, the flexible nanophotocatalytic component includes a flexible inner ring, a flexible outer ring, and filter layers; the flexible inner ring is fixedly sleeved onto the outer wall of the support tube; there are two filter layers, and the two filter layers are installed between the flexible inner ring and the flexible outer ring, forming a cavity; the flexible inner ring has several first connecting holes on its wall, and the support tube has several second connecting holes aligned with the first connecting holes on its wall; the cavity is connected to the support tube through the first connecting holes and the second connecting holes.

[0010] Preferably, the filter layer includes a honeycomb flexible carrier and a nano-photocatalytic mesh; the honeycomb flexible carrier has a plurality of honeycomb pores uniformly arranged on it, and each of the plurality of honeycomb pores is filled with a nano-photocatalytic mesh.

[0011] Preferably, the elastic hinge seat includes a fixed seat and a rotating shaft rotatably mounted on the fixed seat. The fixed seat is fixed to the outer wall of the support tube. The cylindrical surface of the rotating shaft is fixed to one end of the carrier rod. A spring is sleeved on the rotating shaft and is located in a cavity opened on the fixed seat. One end of the spring is fixed to the cylindrical surface of the rotating shaft, and the other end of the spring is fixed to the cavity wall. A cover is fixedly installed at one end of the cavity.

[0012] Preferably, a lower baffle is fixedly connected to the lower part of the fixed base, and the lower baffle is in contact with the bottom surface of the support rod.

[0013] Preferably, the lower end of the vertical pipe is fixedly connected to a curved pipe, one end of the curved pipe is fixedly connected to an air inlet hood, and the air inlet hood is fixedly installed at the air outlet of the air purifier.

[0014] Furthermore, an unfolding method is provided, the steps of which are as follows: First, air pressure drives the air purifier to discharge purified air from the air outlet, which inflates the inside of the vertical pipe, pressurizes it, drives the piston connecting part to move upward, and stretches the second helical spring, producing tensile deformation. 2. Elastic unfolding: During the upward movement of the piston connecting part, the flexible nano-photocatalytic component moves together and moves to the top of the vertical tube. It moves from the narrow space of the vertical tube to the external space. Through the spring in the elastic hinge seat, the carrier rod is flipped until it is horizontal. The folded flexible nano-photocatalytic component unfolds together with the carrier rod. 3. When the piston reaches the position of the retaining ring, it is blocked and cannot continue to move upward. The top of the connecting rod is pressed against the retaining ring. With the help of the retaining ring, the connecting rod moves downward about the piston sleeve. The retaining plate separates from the lower end of the support tube, the obstruction is removed, and the cavity inside the flexible nano-photocatalytic component is connected to the vertical tube. The first helical spring is stretched, resulting in tensile deformation. Fourth, the air purifier's outlet does not discharge air, causing the piston connector to lose air pressure. Through the elastic force of the second helical spring, the piston connector is driven downward. When the piston connector moves downward, the carrier rod is blocked by the top of the retaining ring. It flips through the elastic hinge seat, causing the carrier rod to come into contact with the axis of the vertical tube, that is, to move from the outside to the narrow space inside the vertical tube, thus achieving convergence. At the same time, the flexible nano photocatalytic component also converges and folds together, entering the vertical tube, thus achieving folded storage.

[0015] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0016] The positive and progressive effects of this invention are as follows: The aforementioned foldable and deployable NCCO nanofiber filter assembly and its deployment method are installed as a whole at the air outlet of an air purifier. Through the design of a piston connector, a retaining ring, a flexible nanofiber photocatalytic component, an elastic hinge seat, and a carrier rod, when the air purifier is running, the air pressure generated at the air outlet drives the piston connector upward, causing the flexible nanofiber photocatalytic component, the elastic hinge seat, and the carrier rod to move from the narrow space inside the vertical tube to the outside of the vertical tube. The elastic hinge seat provides elastic reset and flipping, and the carrier rod unfolds the flexible nanofiber photocatalytic component, achieving automatic unfolding during use. After unfolding, a large-area filter surface is formed to ensure the purification effect. When the air purifier is not running, the piston connector loses air pressure and automatically descends for automatic storage, allowing the flexible nanofiber photocatalytic component to gather inside the vertical tube, avoiding occupying external space when not in use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention applied to an air purifier.

[0018] Figure 2 This is a schematic diagram of the interior of the vertical tube of the flexible nano-photocatalytic component in its unfolded state and the structure of the flexible nano-photocatalytic component installation.

[0019] Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A in the middle.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the piston connecting part in the unfolded state of the flexible nano-photocatalytic component of the present invention.

[0021] Figure 5 This is a schematic diagram of the bottom structure of the piston sleeve of the present invention.

[0022] Figure 6 This is a schematic diagram of the support rod distribution structure at the bottom of the flexible nano-photocatalytic component of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the elastic hinge seat of the present invention.

[0024] Figure 8 This is a schematic diagram of the installation structure of the fixed base and the rotating shaft of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of one corner of the filter layer of the present invention.

[0026] Explanation of reference numerals in the attached figures 1. Flexible nano-photocatalytic component; 101. Flexible inner ring; 1011. First connecting hole; 102. Flexible outer ring; 103. Filter layer; 1031. Honeycomb flexible carrier; 1032. Nano-photocatalytic mesh; 2. Vertical tube; 3. Piston connector; 301. Piston sleeve; 302. Support tube; 3021. Top cover; 3022. Incense block; 303. Second connecting hole; 304. Lower hole body; 305. Upper hole body; 306. Connecting rod; 307. First helical spring Spring; 308, baffle; 3081, straight rod; 3082, cover; 3083, first rubber washer; 309, second rubber washer; 4, connecting cap; 5, bend; 6, air intake cover; 7, carrier rod; 8, second helical spring; 9, connecting strip; 10, elastic hinge seat; 1001, fixed seat; 1002, rotating shaft; 1003, cover; 1004, lower baffle; 1005, clock spring; 1006, cavity; 11, retaining ring; 12, air purifier. Detailed Implementation

[0027] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0028] like Figure 1-9As shown, a foldable and deployable NCCO nanofilter assembly includes a vertical pipe 2 whose lower end is connected to the air outlet of an air purifier 12. The specific connection is as follows: the lower end of the vertical pipe 2 is fixedly connected to a bend pipe 5, and one end of the bend pipe 5 is fixedly connected to an air intake cover 6. The air intake cover 6 is fixedly installed at the air outlet of the air purifier 12. The air intake cover 6 is fixedly installed by screws, and the edge of the air intake cover has a sealing gasket for pressing it tightly onto the outer wall of the air purifier 12 after installation, providing a seal after installation.

[0029] The foldable and deployable NCCO nanofiber filter assembly further includes: a piston connector 3, which is fitted into the interior of the vertical tube 2, and the bottom of the piston connector 3 is elastically connected to the lower end of the vertical tube 2; a retaining ring 11, which is fixedly installed at the upper end of the vertical tube 2; a flexible nanophotocatalytic component 1, the middle of which is connected to the upper end of the piston connector 3; four elastic hinge seats 10, which are arranged in a ring array on the piston connector 3; and a carrier rod 7, one end of which is connected to the elastic hinge seat 10, and the other end of which is connected to the corner of the flexible nanophotocatalytic component 1. Connecting caps 4 are fixedly embedded at each of the four corners of the flexible nanophotocatalytic component 1, and the ends of the carrier rods 7 are fixed to the connecting caps 4, thus achieving the fixed installation of the four carrier rods 7 at the four corners of the flexible nanophotocatalytic component 1. Figure 3 As shown, the inner diameter of the retaining ring 11 is designed with a variable diameter, with the inner diameter decreasing from top to bottom, and the inner diameter at the lower end being smaller than the inner diameter of the vertical tube 2, which can provide a block for the piston sleeve 301 and press the top of the connecting rod 306.

[0030] In practical implementation, the entire assembly is installed at the air outlet of the air purifier 12. Through the design of the piston connector 3, baffle ring 11, flexible nano-photocatalytic component 1, elastic hinge seat 10, and carrier rod 7, when the air purifier 12 is running, the air pressure generated at the air outlet drives the piston connector 3, causing it to rise. The flexible nano-photocatalytic component 1, elastic hinge seat 10, and carrier rod 7 on it move from the narrow space inside the vertical tube 2 to the outside of the vertical tube 2. The elastic hinge seat 10 provides elastic reset and flipping, and the carrier rod 7 causes the flexible nano-photocatalytic component 1 to unfold, achieving automatic unfolding when in use. After unfolding, it forms a large-area filter surface to ensure the purification effect. When the air purifier 12 is not running, the piston connector 3 loses air pressure and automatically descends for automatic storage, allowing the flexible nano-photocatalytic component 1 to gather inside the vertical tube 2, avoiding occupying external space when not in use.

[0031] like Figure 3-4As shown, the vertical pipe 2 is currently in a pressurized state; the piston connecting member 3 includes a piston sleeve 301 and a support pipe 302; the piston sleeve 301 is fixedly sleeved onto the bottom end of the support pipe 302, and the edge of the piston sleeve 301 is in close contact with the inner wall of the vertical pipe 2; the lower end of the support pipe 302 is open, and the upper end is closed; a baffle 308 is provided below the support pipe 302, and a second rubber gasket 309 is installed on the top edge of the baffle 308; both sides of the baffle 308 are... A connecting rod 306 is fixedly connected. The upper part and lower part of the piston sleeve 301 are respectively provided with an upper hole 305 and a lower hole 304, and the upper hole 305 and the lower hole 304 are connected. The connecting rod 306 passes through the lower hole 304 and is clearance-fitted with the upper hole 305. The diameter of the lower hole 304 is larger than that of the upper hole 305, and a first helical spring 307 is provided in the lower hole 304. The connecting rod 306 is elastically connected to the piston sleeve 301 through the first helical spring 307.

[0032] The piston sleeve 301 is made of rubber and is in close contact with the inner wall of the vertical tube 2 to achieve a fit. The vertical tube 2 is filled with air and pressurized. The air pressure drives the piston sleeve 301, causing the piston sleeve 301 and its components to move upward together. Until it is blocked by the lower end of the retaining ring 11, the retaining ring 11 blocks the connecting rod 306. The connecting rod 306 moves downward about the piston sleeve 301, the retaining plate 308 separates from the lower end of the support tube 302, and the obstruction of the lower end of the support tube 302 is removed, so that the cavity in the flexible nano-photocatalytic component 1 is connected to the vertical tube 2, and the first helical spring 307 is stretched, producing tensile deformation.

[0033] like Figure 2 and Figure 5 As shown, at least one second helical spring 8 is provided at the bottom of the piston sleeve 301. The top end of the second helical spring 8 is fixedly connected to the bottom surface of the piston sleeve 301, and a connecting strip 9 is fixedly connected to the bottom end of the second helical spring 8. The connecting strip 9 is fixedly installed on the lower inner wall of the vertical tube 2. During the upward movement of the piston connecting member 3, the second helical spring 8 is stretched, resulting in elastic deformation. The vertical tube 2 is not pressurized with air. Through the elastic force of the second helical spring 8, the piston connecting member 3 moves downward to reset. The top end of the connecting rod 306 loses the pressure of the retaining ring 11 and is reset by the first helical spring 307, so that the retaining plate 308 covers the lower end of the support tube 302 again for sealing.

[0034] like Figure 1 , Figure 4 as well as Figure 9As shown, the flexible nano-photocatalytic component 1 includes a flexible inner ring 101, a flexible outer ring 102, and a filter layer 103. The flexible inner ring 101 is fixedly sleeved onto the outer wall of the support tube 302. There are two filter layers 103, and the two filter layers 103 are installed between the flexible inner ring 101 and the flexible outer ring 102. The two filter layers 103, the flexible inner ring 101, and the flexible outer ring 102 form a cavity. The flexible inner ring 101 has a plurality of first connecting holes 1011 on its wall, and the support tube 302 has a plurality of second connecting holes 303 aligned with the first connecting holes 1011 on its wall. The cavity is connected to the support tube 302 through the first connecting holes 1011 and the second connecting holes 303. The filter layer 103 includes a honeycomb flexible carrier 1031 and a nano-photocatalytic mesh 1032; the honeycomb flexible carrier 1031 has a plurality of honeycomb holes uniformly arranged on it, and each of the plurality of honeycomb holes is filled with a nano-photocatalytic mesh 1032.

[0035] The flexible inner ring 101, flexible outer ring 102, and honeycomb flexible carrier 1031 are all made of rubber, making the whole structure soft and deformable. The honeycomb flexible carrier 1031 is a rubber sheet with several hexagonal holes formed by punching, which are the aforementioned honeycomb holes, used to fill the nano-photocatalytic mesh 1032. The nano-photocatalytic mesh 1032 is made of wire mesh, and the nano-catalyst particles attached to the wire mesh are further exposed to the outside, directly receiving external natural light. The air in the vertical pipe 2 passes through the support pipe 302, and then through the first connecting hole 1011 and the second connecting hole 303 into the clamping cavity. After passing through the nano-photocatalytic mesh 1032, it is discharged. During the process, nano-photocatalysis is carried out to achieve purification.

[0036] like Figure 7-8 As shown, the elastic hinge seat 10 includes a fixed seat 1001 and a rotating shaft 1002 rotatably mounted on the fixed seat 1001. The fixed seat 1001 is fixed to the outer wall of the support tube 302. The cylindrical surface of the rotating shaft 1002 is fixed to one end of the carrier rod 7. A spring 1005 is sleeved on the rotating shaft 1002, and the spring 1005 is located in a cavity 1006 opened on the fixed seat 1001. One end of the spring 1005 is fixed to the cylindrical surface of the rotating shaft 1002, and the other end of the spring 1005 is fixed to the wall of the cavity 1006. A cover 1003 is fixedly installed on one end of the cavity 1006. A lower baffle 1004 is fixedly connected to the lower part of the fixed seat 1001, and the lower baffle 1004 contacts the bottom surface of the carrier rod 7.

[0037] The rotating shaft 1002 allows one end of the carrier rod 7 to be hinged to the outer wall of the support tube 302, with a spring 1005 at the hinge position. In the retracted state, with the piston connector 3 located at the lower end of the vertical tube 2, the flexible nano-photocatalytic component 1, the elastic hinge seat 10, and the carrier rod 7 are retracted into the vertical tube 2. The carrier rod 7 flips and approaches the axis of the vertical tube 2. The spring 1005 is rotated by the carrier rod 7, achieving torsion and generating elastic deformation. When unfolded, the piston connector 3 moves upward, and the flexible nano-photocatalytic component 1 moves along with it, moving to the top of the vertical tube 2 and from the narrow space of the vertical tube 2 to the external space. The spring 1005 in the elastic hinge seat 10 provides a reset drive, causing the carrier rod 7 to flip until it is horizontal and contacts the lower baffle 1004. The folded flexible nano-photocatalytic component 1 unfolds together with the carrier rod 7. When it is put away again, the piston connecting part 3 is driven to move downward by the elastic force of the second helical spring 8. When the piston connecting part 3 moves downward, the carrier rod 7 is blocked by the top of the retaining ring 11. It flips through the elastic hinge seat 10, causing the carrier rod 7 to come into contact with the axis of the vertical tube 2, that is, to move from the outside to the narrow space inside the vertical tube 2, so as to achieve folding. At the same time, the flexible nano-photocatalytic component 1 is folded and put into the vertical tube 2, so as to achieve folding and storage.

[0038] As an extension, the top of the support tube 302 is sealed by a top cover 3021. The top cover 3021 is detachably installed on the top of the support tube 302. If screws or threads are used for fixing, a sealing gasket should be provided at the connection point for sealing. An incense block 3022 is provided at the bottom of the top cover 3021. The incense block 3022 can be made of sponge, which absorbs fragrance, such as lavender essential oil. When air flows into the cavity in the support tube 302, the lavender essential oil scent can be mixed into the air, which can improve the ambient air and has a certain bactericidal effect.

[0039] A straight rod 3081 is fixedly connected to the top of the baffle 308, and a cover 3082 with an open top is fixedly connected to the top end of the straight rod 3081. Figure 4 As shown, the flexible nano-photocatalytic component 1 is in the unfolded state at this time. The cover 3082 moves downward together with the baffle 308 and detaches from the incense block 3022, removing its obstruction. The fragrance of the incense block 3022 can circulate with the airflow. During the folding and storage process of the flexible nano-photocatalytic component 1, the cover 3082 moves upward and reset together with the baffle 308. The cover 3082 surrounds the incense block 3022 to reduce the volatilization of the incense block 3022. A first rubber gasket 3083 is provided at the top port of the cover 3082. After surrounding the incense block 3022, the first rubber gasket 3083 presses the top cover 3021 to provide a seal for the surrounding space.

[0040] An unfolding method, the steps of which are as follows: First, air pressure drives the air purifier 12 to discharge purified air from the air outlet, which inflates the vertical pipe 2 and pressurizes it, driving the piston connecting part 3 to move upward and stretching the second helical spring 8, producing tensile deformation. II. Elastic Deployment: During the upward movement of the piston connecting piece 3, the flexible nano-photocatalytic component 1 moves along with it, moving above the vertical tube 2 and from the narrow space of the vertical tube 2 to the external space. Through the spring 1005 in the elastic hinge seat 10, the carrier rod 7 is flipped until it is horizontal, and the folded flexible nano-photocatalytic component 1 unfolds together with the carrier rod 7; the unfolded state is as follows. Figure 1-4 As shown; Third, when the piston connecting part 3 moves upward to the position of the retaining ring 11, it is blocked and cannot continue to move upward. The top of the connecting rod 306 is pressed against the retaining ring 11. With the help of the retaining ring 11, the connecting rod 306 moves downward about the piston sleeve 301. The retaining plate 308 separates from the lower end of the support tube 302, and the obstruction is removed, so that the cavity in the flexible nano photocatalytic component 1 is connected to the vertical tube 2, and the first helical spring 307 is stretched, resulting in tensile deformation. Fourth, the air purifier 12 does not exhaust air from its outlet, causing the piston connecting part 3 to lose air pressure. Through the elastic force of the second helical spring 8, the piston connecting part 3 is driven to move downward. When the piston connecting part 3 moves downward, the carrier rod 7 is blocked by the top of the retaining ring 11. It flips through the elastic hinge seat 10, so that the carrier rod 7 is close to the axis of the vertical tube 2, that is, it moves from the outside to the narrow space inside the vertical tube 2, realizing the convergence. At the same time, the flexible nano photocatalytic component 1 is also converged and folded together, entering the vertical tube 2, realizing the folded storage.

[0041] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A foldable and deployable NCCO nanofilter assembly, comprising a vertical pipe (2) with its lower end connected to the air outlet of an air purifier (12), characterized in that, Also includes: A piston connector (3) is fitted into the interior of the vertical pipe (2), and the bottom of the piston connector (3) is elastically connected to the lower end of the vertical pipe (2); the piston connector (3) includes a piston sleeve (301) and a support pipe (302); the piston sleeve (301) is fixedly fitted to the bottom end of the support pipe (302), and the edge of the piston sleeve (301) is in close contact with the inner wall of the vertical pipe (2); the lower end of the support pipe (302) is open, and the upper end is closed; a baffle (308) is provided below the support pipe (302), and a second rubber gasket (308) is installed at the top edge of the baffle (308). 9) A connecting rod (306) is fixedly connected to both sides of the baffle (308). The upper part and the lower part of the piston sleeve (301) are respectively provided with an upper hole (305) and a lower hole (304), and the upper hole (305) and the lower hole (304) are connected. The connecting rod (306) passes through the lower hole (304), and the connecting rod (306) and the upper hole (305) are connected with clearance fit. The diameter of the lower hole (304) is larger than that of the upper hole (305), and a first helical spring (307) is provided in the lower hole (304). The connecting rod (306) is elastically connected to the piston sleeve (301) through the first helical spring (307). A retaining ring (11) is fixedly installed at the upper end of the vertical pipe (2); A flexible nano-photocatalytic component (1) is connected in the middle to the upper end of a piston connector (3). Four elastic hinge seats (10) are arranged in a ring array on the piston connector (3). Each elastic hinge seat (10) includes a fixed seat (1001) and a rotating shaft (1002) rotatably mounted on the fixed seat (1001). The fixed seat (1001) is fixed to the outer wall of the support tube (302). The cylindrical surface of the rotating shaft (1002) is parallel to the carrier rod (7). One end of the rotating shaft (1002) is fixedly connected to the rotating shaft (1002), and a spring (1005) is sleeved on the rotating shaft (1002). The spring (1005) is located in a cavity (1006) opened on the fixed seat (1001). One end of the spring (1005) is fixedly connected to the cylindrical surface of the rotating shaft (1002), and the other end of the spring (1005) is fixedly connected to the wall of the cavity (1006). A cover (1003) is fixedly installed on one end of the cavity (1006). The carrier rod (7) has one end connected to the elastic hinge seat (10) and the other end connected to the corner of the flexible nano-photocatalytic component (1).

2. The foldable and unfoldable NCCO nanofilter assembly as described in claim 1, characterized in that: At least one second helical spring (8) is provided at the bottom of the piston sleeve (301). The top end of the second helical spring (8) is fixedly connected to the bottom surface of the piston sleeve (301). A connecting strip (9) is fixedly connected to the bottom end of the second helical spring (8). The connecting strip (9) is fixedly installed on the lower inner wall of the vertical pipe (2).

3. The foldable and unfoldable NCCO nanofilter assembly as described in claim 1, characterized in that: The flexible nano-photocatalytic component (1) includes a flexible inner ring (101), a flexible outer ring (102), and a filter layer (103). The flexible inner ring (101) is fixedly sleeved onto the outer wall of the support tube (302). There are two filter layers (103), and the two filter layers (103) are installed between the flexible inner ring (101) and the flexible outer ring (102). The two filter layers (103), the flexible inner ring (101), and the flexible outer ring (102) form a cavity. The flexible inner ring (101) has several first connecting holes (1011) on its wall. The support tube (302) has several second connecting holes (303) aligned with the first connecting holes (1011) on its wall. The cavity is connected to the support tube (302) through the first connecting holes (1011) and the second connecting holes (303).

4. The foldable and unfoldable NCCO nanofilter assembly as described in claim 3, characterized in that: The filter layer (103) includes a honeycomb flexible carrier (1031) and a nano-photocatalytic mesh (1032); a plurality of honeycomb pores are uniformly arranged on the honeycomb flexible carrier (1031), and the plurality of honeycomb pores are filled with nano-photocatalytic mesh (1032).

5. The foldable and unfoldable NCCO nanofilter assembly as described in claim 1, characterized in that: The lower part of the fixed base (1001) is fixedly connected to a lower baffle (1004), and the lower baffle (1004) is in contact with the bottom surface of the carrier rod (7).

6. The foldable and unfoldable NCCO nanofilter assembly as described in claim 1, characterized in that: The lower end of the vertical pipe (2) is fixedly connected to a bend pipe (5), and one end of the bend pipe (5) is fixedly connected to an air inlet hood (6). The air inlet hood (6) is fixedly installed at the air outlet of the air purifier (12).

7. The method for unfolding the foldable and unfoldable NCCO nanofilter assembly as described in claim 2, characterized in that: The unfolding method involves the following steps:

1. Driven by air pressure, the air purifier (12) discharges purified air through its outlet, causing the vertical pipe (2) to be filled with air and pressurized, driving the piston connecting part (3) to move upward, while stretching the second helical spring (8) to produce tensile deformation.

2. During the upward movement of the piston connecting part (3), the flexible nano-photocatalytic component (1) moves together and moves to the top of the vertical tube (2). It moves from the narrow space of the vertical tube (2) to the external space. Through the spring (1005) in the elastic hinge seat (10), the carrier rod (7) is flipped until it is horizontal. The folded flexible nano-photocatalytic component (1) unfolds together with the carrier rod (7).

3. When the piston connecting part (3) moves up to the position of the retaining ring (11), it is blocked and cannot continue to move up. The top of the connecting rod (306) is pressed against the retaining ring (11). With the help of the retaining ring (11), the connecting rod (306) moves down relative to the piston sleeve (301). The retaining plate (308) separates from the lower end of the support tube (302), and the obstruction is removed, so that the cavity in the flexible nano photocatalytic component (1) is connected to the vertical tube (2), and the first helical spring (307) is stretched, resulting in tensile deformation. Fourth, the air purifier (12) does not discharge air from its outlet, causing the piston connector (3) to lose air pressure. Through the elastic force of the second spiral spring (8), the piston connector (3) is driven to move downward. When the piston connector (3) moves downward, the carrier rod (7) is blocked by the top of the retaining ring (11). It is flipped through the elastic hinge seat (10), so that the carrier rod (7) is close to the axis of the vertical tube (2), that is, it moves from the outside to the narrow space inside the vertical tube (2) to achieve convergence. At the same time, the flexible nano photocatalytic component (1) enters the vertical tube (2) under the action of the carrier rod (7) to achieve folding and storage.

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