Air purification fresh air equipment

Abstract

The present invention provides an air purification fresh air device, which belongs to the technical field of fresh air devices. The air purification fresh air device comprises a shell, and a filter element is arranged inside the shell. The filter element comprises a shell, two filter elements and a traction assembly, and fence plates are arranged on both sides of the shell, and there is a gap between the fence plates. The two filter elements are installed inside the two sides of the shell, and the two filter elements can be folded and unfolded. The traction assembly is located between the two filter elements; the filter element on one side can be driven to unfold by the traction assembly to purify the air, while the filter element on the other side will be folded by the traction assembly. During the folding process, impurities adsorbed on the filter element can be sandwiched in the middle of the interlayer to prevent dust from falling off when the filter element is disassembled.

Description

Technical Field

[0001] The invention belongs to the technical field of fresh air equipment, and in particular relates to an air purification fresh air equipment. Background Art

[0002] A clean room, also known as a dust-free workshop, clean room or clean room, refers to a closed room with strict requirements on air temperature, humidity, pressure, and especially dust concentration. Clean rooms can be divided into industrial clean rooms and biological clean rooms according to their uses. Low-level clean rooms are usually not disinfected and are more concerned with airborne dust.

[0003] A Chinese patent with authorization announcement number CN113701216B discloses a fresh air device and its control method, including a chassis, a total heat exchanger is arranged inside the chassis, primary air filters are arranged on the left and right sides of the total heat exchanger, secondary air filters are arranged inside the old air inlet channel and the new air exhaust channel, the secondary air filter and the primary air filter are detachably installed in the chassis, the secondary air filter and the primary air filter include a filter mechanism and a lifting and adjusting mechanism for driving the filter mechanism to move up and down in the chassis: the present invention arranges a secondary air filter and a primary air filter that are detachably installed in the chassis, the secondary air filter and the primary air filter include a filter mechanism and a lifting and adjusting mechanism for driving the filter mechanism to move up and down in the chassis, when the filter is dismantled for inspection or cleaning, it is only necessary to remove the filter through the inspection port, which is convenient for replacing and cleaning the filter and improving the use effect and service life of the fresh air equipment.

[0004] After the above-mentioned fresh air equipment has been used for a long time, the filter plate needs to be replaced. The staff will first open the fresh air equipment and then take out the filter plate fixed in the air supply duct. However, in the process of removing the filter plate, the dust on the filter plate may fall off and be brought into the clean room by the air, resulting in excessive dust concentration in the clean room. Summary of the invention

[0005] The object of the present invention is to provide an air purification fresh air device, aiming to solve the problem in the prior art that when the filter plate is replaced, dust on the filter plate may fall off and be brought into the clean room by the air.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air purification fresh air device, comprising: a shell, a filter element is arranged inside the shell, and the filter element comprises an outer shell, two filter elements and a traction assembly, and fence plates are arranged on both sides of the outer shell, and there is a gap between the fence plates. The two filter elements are installed inside the two sides of the outer shell, and the two filter elements can be folded and unfolded. The traction assembly is located between the two filter elements, and the two filter elements are connected to the traction assembly. Under the drive of the traction assembly, the two filter elements can be alternately extended and folded. The filter element can cover the gap between the fence plates when it is unfolded, and the air can pass through the filter element through the gap between the fence plates. Openings are arranged at the bottom of both sides of the outer shell, and the openings are connected to the outside of the shell. The filter element can be taken out from the opening after being folded.

[0007] A further technical solution of the present invention is that the filter element comprises a rubber segment and a filter segment, the rubber segment and the filter segment are evenly and alternately arranged, the rubber segment is in a V-shaped structure, and the notches of adjacent rubber segments are arranged in opposite directions, so that the filter element can automatically present a wavy shape in a natural state when unfolded.

[0008] A further technical solution of the present invention is that a smoothing unit is arranged on both sides of the interior of the shell, and the smoothing unit is used to completely smooth the filter element into a plane. The smoothing unit includes two extrusion blocks arranged in a mirror-symmetrical manner, a second elastic member and a pull rope. A second inclined surface is arranged on the extrusion block for avoiding the movement of the traction component. The extrusion block is installed on the shell through the second elastic member, and the extrusion block is pressed against the filter element through the second elastic member. The pull rope is connected to the extrusion block and can drive the extrusion block away from the filter element.

[0009] A further technical solution of the present invention is that the traction assembly includes a conveyor belt, a traction column and a paddle, the conveyor belt is installed on the bottom of the shell through a roller, the traction column is arranged on the side of the conveyor belt located inside the shell, the paddle is arranged on the side of the conveyor belt located outside the shell, and the traction column is connected to one side of the filter element.

[0010] A further technical solution of the present invention is that a pushing assembly is provided on the outer shell to limit the displacement of the filter element caused by the thrust of the airflow, and the pushing assembly includes push plates located on both sides of the filter element, and the push plates are connected to the outer shell through a first elastic member. When the first elastic member is in a natural state, the push plates can just rest against the top of the wavy filter element, and first inclined surfaces are provided on both sides of the push plates. When the traction assembly moves, the push plates are pushed by the first inclined surface to compress the first elastic member, so that the push plates avoid the traction assembly.

[0011] A further technical solution of the present invention is that connecting pieces are provided on both sides of the filter element, connecting pieces are provided with connecting grooves arranged along the length of the connecting pieces, and connecting sliders adapted to the connecting grooves are provided on both ends of the shell and the traction column.

[0012] A further technical solution of the present invention is that a top ball structure is provided at the opening, the top ball structure abuts against the connecting piece to increase the resistance of the connecting piece to slide downward, and a groove is provided at the bottom of the connecting piece.

[0013] A further technical solution of the present invention is that the push plates are arranged in a grid shape.

[0014] A further technical solution of the present invention is that the filter element is detachably installed inside the housing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The traction component can drive the filter element on one side to unfold and purify the air, while the filter element on the other side will be folded by the traction component. During the folding process, the impurities adsorbed on the filter element can be sandwiched in the middle of the interlayer to prevent dust from falling off when the filter element is disassembled.

[0017] 2. When the outdoor air quality is relatively good, the flattening unit can fully unfold the filter element into a flat state, which can effectively reduce the resistance to air circulation and ensure that the fresh air equipment maintains efficient ventilation performance. When the outdoor air quality is poor, the filter element can present a wavy shape, which can increase the filtration surface area and effectively prolong the residence time of particles in the filter element, thereby improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of a specific embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the filter structure of a specific embodiment of the present invention;

[0022] Figure 4 It is an axonometric cross-sectional view of a filter element according to a specific embodiment of the present invention;

[0023] Figure 5This is a schematic diagram of the internal structure of a filter element in a specific embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a filter element in a specific embodiment of the present invention;

[0025] Figure 7 for Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0026] In the figure: 1. shell; 11. transverse partition; 12. longitudinal partition; 13. air inlet chamber 1; 14. air inlet chamber 2; 15. exhaust chamber 1; 16. exhaust chamber 2; 17. air inlet; 18. air outlet; 2. heat exchange core; 3. fan; 4. filter element; 41. shell; 411. opening; 412. fence plate; 42. filter element; 421. connector; 422. connecting groove; 423. top bead structure; 424. groove; 425. rubber segment; 426. filter segment; 43. traction assembly; 431. conveyor belt; 432. traction column; 433. paddle; 44. push assembly; 441. push plate; 442. first elastic member; 5. smoothing unit; 51. extrusion block; 52. second elastic member; 53. pull rope. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 7 , the present invention provides the following technical solutions: an air purification fresh air device, comprising a housing 1, a heat exchange core 2, a fan 3 and a filter 4;

[0029] See also Figure 1-Figure 2 The interior of the shell 1 is designed as a hollow structure, in which the heat exchange core 2, two fans 3 and the filter element 4 are installed. One of the two fans 3 is responsible for extracting indoor air to the outside, and the other is responsible for introducing outdoor fresh air into the room. Both indoor air and outdoor air need to pass through the heat exchange core 2 for efficient heat exchange. In addition, the filter element 4 is placed at the outdoor air inlet to effectively filter out impurities in the air, ensuring that the air entering the room is fresh and pure, and avoiding the invasion of turbid air.

[0030] The shell 1 is designed as a rectangular structure, and the heat exchange core 2 is placed in the center of the shell 1. Inside the shell 1, a transverse partition 11 and a longitudinal partition 12 are integrally formed, and the two partitions firmly sandwich the heat exchange core 2 in the middle. Through the layout of the transverse partition 11, the longitudinal partition 12 and the heat exchange core 2, the interior of the shell 1 is divided into four chambers: air intake chamber 1 13, air intake chamber 2 14, exhaust chamber 1 15 and exhaust chamber 2 16. Among them, the air intake chamber 1 13 and the air intake chamber 2 14 are arranged diagonally, and are interconnected with the help of the heat exchange core 2 to form an air intake channel; similarly, the exhaust chamber 1 15 and the exhaust chamber 2 16 are also arranged diagonally, and are interconnected through the heat exchange core 2 to form an exhaust channel.

[0031] There are two fans 3, which are firmly installed in the second air inlet chamber 14 and the second air outlet chamber 16 by screws. The air inlet 17 and the air outlet 18 are respectively provided at the two side ends of the housing 1. The air outlet ends of the two fans 3 are closely connected with the two air outlets 18, respectively, to ensure that the air in the air inlet channel and the air outlet channel can flow smoothly. In this way, the indoor air is effectively drawn to the outside, and the fresh air outside is introduced into the room.

[0032] See also Figure 2 , the filter element 4 is installed inside the air intake chamber 13, and a slot structure is designed on the side wall of the diaphragm 11 and the housing 1, so that the filter element 4 can slide smoothly and be fixed in the slot, thereby achieving a stable fixation of the filter element 4. Of course, the fixing method of the filter element 4 is not limited to this, and it can also be firmly fixed in the air intake chamber 13 by screws and other fixings, which also facilitates the removal of the filter element 4. Under the strong action of the fan 3, fresh air from the outside is continuously sucked into the air intake chamber 13 and forced to pass through the filter element 4. The filter element 4 removes impurities in the air with its filtering performance, thereby significantly improving the quality of the air discharged into the room.

[0033] See also Figure 3-Figure 5, the filter element 4 is composed of a shell 41, two filter elements 42 and a traction assembly 43. Both sides of the shell 41 are equipped with fence plates 412, and these fence plates 412 are designed with gaps to allow air to pass freely through the filter element 4. The filter element 42 is placed inside the shell 41 and exists in a folded state, and the two filter elements 42 are arranged opposite to each other. Driven by the traction assembly 43, the two filter elements 42 can alternately extend and fold. When the filter elements 42 are unfolded, they can completely cover the gaps between the fence plates 412 to ensure that the air must be filtered through the unfolded filter elements 42 in the process of passing through the filter element 4. In addition, openings 411 are provided at the bottom of both sides of the shell 41, and the openings 411 are connected to the outside of the shell 1, so that after the filter element 42 is folded, it can be easily taken out from these openings 411 and replaced;

[0034] When in use, the traction assembly 43 drives the filter element 42 on one side to unfold, completely covering the gap between the fence plates 412, ensuring that the air can be effectively filtered by the filter element 42 when passing through the filter element 4. When the filter element 42 needs to be replaced, the traction assembly 43 plays a role again to fold up the unfolded filter element 42. Subsequently, the folded filter element 42 can be conveniently taken out from the opening 411 for replacement. At the same time, the other filter element 42 that was originally in a folded state is unfolded to cover the gap between the fence plates 412 and continue to filter the air.

[0035] See also Figure 6 , both sides of the filter element 42 are equipped with strip-shaped connecting pieces 421, and the connecting pieces 421 are provided with connecting grooves 422 arranged along the length of the connecting pieces 421. Accordingly, both ends of the housing 41 and the traction assembly 43 are equipped with connecting sliders adapted to the connecting grooves 422. Through the cooperation between the connecting grooves 422 and the connecting sliders, the two ends of the filter element 42 are fixed. At the same time, the design of the connecting grooves 422 and the sliders also greatly facilitates the disassembly process of the filter element 42.

[0036] In order to prevent the folded filter element 42 from naturally slipping out of the opening 411, a top bead structure 423 is designed at the opening 411. This top bead structure 423 abuts against the connecting piece 421, effectively preventing the connecting piece 421 from accidentally slipping out of the opening 411. It should be noted that the top bead structure 423 belongs to the prior art in this technical field, and its specific structure is not repeated here. Its working principle is to use the thrust of the spring to make the top bead tightly against the limiting groove, thereby realizing reliable limiting of the connecting piece 421. In order to facilitate the disassembly of the filter element 42, a groove 424 is set at the bottom of the connecting piece 421. Due to the existence of the top bead structure 423, the filter element 42 is not easy to be removed from the opening 411. Therefore, when disassembling the filter element 42, the staff can hold the groove 424 with the index finger and the middle finger, and then pull it out, so as to overcome the resistance of the top bead structure 423 and smoothly remove the filter element 42.

[0037] When the filter element 42 is filtering the air, it stretches to present a wavy state, which can increase the effective filtering area, prolong the retention time of particles, and improve the interception efficiency. Due to the thrust generated by the air flow, the wavy filter element 42 may be deformed, that is, bulge to one side, which easily affects the filtering effect of the filter element 42. Therefore, a push assembly 44 is installed inside the housing 41 to effectively limit the displacement of the filter element 42 caused by the thrust.

[0038] The push assembly 44 includes push plates 441 disposed on the housing 41 and located on both sides of the filter element 42. These push plates 441 are connected to the housing 41 through a first elastic member 442, and the first elastic member 442 is a compression spring. When the first elastic member 442 is in a natural state, the push plate 441 can just resist the top of the wave-shaped filter element 42. In addition, the first elastic member 442 can avoid the traction assembly 43 during its movement, so as to avoid the interference between the traction assembly 43 and the push plate 441. Specifically, a first inclined surface is disposed on both sides of the push plate 441. When the traction assembly 43 moves, the push plate 441 is pushed by the first inclined surface to compress the first elastic member 442, so that the push plate 441 avoids the traction assembly 43. It is worth mentioning that the push plate 441 adopts a grid design, which not only ensures the strength of the structure, but also allows a large amount of air to pass smoothly, ensuring that the impact on air circulation is minimized.

[0039] The traction assembly 43 is composed of three parts: a conveyor belt 431, a traction column 432, and a paddle 433. The conveyor belt 431 is installed at the bottom of the housing 41 through two rollers. The traction column 432 and the paddle 433 are both fixed on the conveyor belt 431. Specifically, the traction column 432 is located inside the housing 41 and is matched and connected with the connection groove 422 in the connection member 421 on the two filter elements 42. The paddle 433 is located outside the housing 41 and is on the side away from the traction column 432;

[0040] When the filter element 42 reaches a saturated state, the conveyor belt 431 can be driven to move by manually turning the paddle 433, thereby moving the traction column 432 in the opposite direction. As the traction column 432 moves, the originally folded filter element 42 will gradually unfold, and the saturated filter element 42 will be folded up. During the folding process, the impurities adsorbed by the filter element 42 will be sandwiched between the folded layers. Subsequently, the saturated filter element 42 can be easily removed through the opening 411 and replaced with a new filter element 42. During the process of replacing the filter element 42, since the impurities have been firmly sandwiched in the interlayer of the filter element, it is rare for the impurities to fall. Of course, during the folding process of the filter element 42, a very small amount of impurities may fall, but the fallen dust will still be left on the filtering side of the filter element 42, thereby effectively preventing impurities from entering the indoor environment.

[0041] In actual use, the complex wavy filter element 42 design will increase the air circulation resistance, thus requiring a higher-power fan 3, which not only increases energy consumption and affects the ventilation volume of the filter element 42, but may also cause unnecessary energy loss. For this reason, the unfolding form of the filter element 42 can be manually adjusted according to the outdoor air quality: when the outdoor air quality is poor, the filter element 42 can present a wavy shape, which can increase the filtering surface area, effectively prolong the residence time of particles in the filter element 42, thereby improving the filtering efficiency and correspondingly prolonging the replacement cycle of the filter element 42. On the contrary, when the outdoor air quality is relatively good, the filter element 42 can be fully unfolded into a flat state, which significantly reduces the resistance to air circulation, ensures that the fresh air equipment maintains efficient ventilation performance, and achieves the optimization of energy use.

[0042] See also Figure 3 In order to effectively unfold the filter element 42, two smoothing units 5 are arranged inside the housing 41. The two smoothing units 5 are respectively installed on both sides of the housing 41. When the filter element 42 needs to be unfolded, the smoothing units 5 perform the smoothing operation. Specifically, each smoothing unit 5 is composed of two extrusion blocks 51 arranged in mirror symmetry, a second elastic member 52 (specifically a compression spring) as a driving force, and a pull rope 53 (see Figure 4 ). The two extrusion blocks 51 are elastically mounted on the housing 41 through the second elastic member 52, and the thrust of the spring enables the two extrusion blocks 51 to tightly clamp the filter element 42 in the middle. One end of the pull rope 53 is connected to the extrusion block 51, and the other end bypasses the edge of the housing 41 and extends downward to the outside of the housing 41 and the external shell 1. Therefore, when the pull rope 53 is pulled downward, the thrust of the spring can be overcome, so that the two extrusion blocks 51 are separated from each other, thereby realizing the expansion and adjustment of the filter element 42.

[0043] First, when the pull rope 53 is not pulled, the filter element 42 is effectively flattened by the two extrusion blocks 51 during the unfolding process, ensuring that its filtering part is maintained in a flattened state. At the same time, the friction generated between the two extrusion blocks 51 and the filter element 42 further enhances the flattening and tensioning effect of the filter element 42. In addition, a second inclined surface is provided on the extrusion block 51. When the filter element 42 needs to be folded, the traction column 432 can push the two extrusion blocks 51 away from each other through the second inclined surface, and then the folded filter element 42 can be completely pushed to the opening 411.

[0044] When the filter element 42 needs to be restored to its wavy shape, the two extrusion blocks 51 can be moved away from each other by simply pulling the pull rope 53. It is worth noting that in order to realize the self-resetting function of the filter element 42, the filter element 42 is designed to include two parts, a rubber segment 425 and a filter segment 426. These two parts are evenly distributed and together constitute a complete filter element 42. Among them, the filter segment 426 is mainly used to filter the air, while the rubber segment 425 presents a V-shaped structure in a natural state, and the notches of adjacent rubber segments 425 are arranged in opposite directions. Such a design enables the filter element 42 to automatically present a wavy shape in a natural state, thereby realizing flexible adjustment of the shape of the filter screen 42, which is convenient for its flexible use in practical applications.

Claims

1. An air purification fresh air device, comprising: A housing (1), wherein a filter element (4) is arranged inside the housing (1), characterized in that the filter element (4) comprises a housing (41), two filter elements (42) and a traction assembly (43), wherein fence plates (412) are arranged on both sides of the housing (41), and there is a gap between the fence plates (412), the two filter elements (42) are installed inside both sides of the housing (41), the two filter elements (42) can be folded and unfolded, the traction assembly (43) is located between the two filter elements (42), and the two filter elements (412) are arranged on both sides of the housing (41). (42) are connected to the traction assembly (43). Under the drive of the traction assembly (43), the two filter elements (42) can alternately extend and fold. The filter element (42) can cover the gap between the fence plates (412) when unfolded, and air can pass through the filter element (42) through the gap between the fence plates (412). The bottom of both sides of the shell (41) is provided with openings (411), and the openings (411) are connected to the outside of the shell (1). After being folded, the filter element (42) can be taken out from the openings (411).

2. The air purification fresh air equipment according to claim 1, characterized in that: The filter element (42) comprises a rubber segment (425) and a filter segment (426), the rubber segment (425) and the filter segment (426) being evenly and alternately arranged, the rubber segment (425) being in a V-shaped structure, and the notches of adjacent rubber segments (425) being arranged in opposite directions, so that the filter element (42) can automatically present a wave shape in a natural state when unfolded.

3. The air purification fresh air equipment according to claim 2, characterized in that: Smoothing units (5) are provided on both sides of the housing (41). The smoothing units (5) are used to completely smooth the filter element (42) into a plane. The smoothing units (5) include two extrusion blocks (51) that are arranged in mirror symmetry, a second elastic member (52) and a pull rope (53). The extrusion blocks (51) are provided with a second inclined surface for avoiding the movement of the pulling assembly (43). The extrusion blocks (51) are installed on the housing (41) via the second elastic member (52), and the extrusion blocks (51) are abutted against the filter element (42) via the second elastic member (52). The pull rope (53) is connected to the extrusion blocks (51) and can drive the extrusion blocks (51) away from the filter element (42).

4. The air purification fresh air equipment according to claim 2, characterized in that: The traction assembly (43) comprises a conveyor belt (431), a traction column (432) and a paddle (433); the conveyor belt (431) is mounted on the bottom of the housing (41) via a roller; the traction column (432) is arranged on a side of the conveyor belt (431) located inside the housing (41); the paddle (433) is arranged on a side of the conveyor belt (431) located outside the housing (41); and the traction column (432) is connected to one side of the filter element (42).

5. The air purification fresh air equipment according to claim 1, characterized in that: The housing (41) is provided with a push assembly (44) for limiting the displacement of the filter element (42) caused by airflow thrust. The push assembly (44) comprises push plates (441) located on both sides of the filter element (42). The push plates (441) are connected to the housing (41) via a first elastic member (442). When the first elastic member (442) is in a natural state, the push plates (441) can just abut against the top of the wave-shaped filter element (42). First inclined surfaces are provided on both sides of the push plate (441). When the traction assembly (43) moves, the first inclined surfaces push the push plate (441) to compress the first elastic member (442), so that the push plate (441) avoids the traction assembly (43).

6. The air purification fresh air equipment according to claim 4, characterized in that: Connecting pieces (421) are provided on both sides of the filter element (42), and connecting grooves (422) arranged along the length of the connecting piece (421) are provided on the connecting piece (421), and connecting slide blocks adapted to the connecting grooves (422) are provided on both ends of the housing (41) and on the traction column (432).

7. The air purification fresh air equipment according to claim 6, characterized in that: A top bead structure (423) is provided at the opening (411), and the top bead structure (423) abuts against the connecting piece (421) to increase the resistance of the connecting piece (421) to sliding downwards. A groove (424) is provided at the bottom of the connecting piece (421).

8. The air purification fresh air equipment according to claim 5, characterized in that: The push plates (441) are arranged in a grid shape.

9. An air purification fresh air device according to any one of claims 1 to 8, characterized in that: The filter element (4) is detachably mounted inside the housing (1).

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