Fresh air purification device and fresh air air conditioning unit

Abstract

The utility model relates to the technical field of fresh air purification, and discloses a fresh air purification device and a fresh air conditioning unit. The fresh air purification device comprises a machine shell and a filter. The machine shell is provided with a ventilation cavity, the filter is located in the ventilation cavity and can filter gas flowing through the ventilation cavity, the filter is detachably connected to the side wall of the machine shell in an inserted mode, and sealing is formed between the filter and the side wall of the machine shell; an insertion and extraction opening allowing the filter to be inserted and extracted is formed in the side wall of the machine shell; a sealing cover plate is detachably installed on the outer side of the side wall of the machine shell and seals the plugging opening, and sealing is formed between the sealing cover plate and the filter. According to the fresh air purification device, only the sealing cover plate needs to be disassembled, the old filter is pulled out, then the new filter is inserted, and finally the sealing cover plate is installed again, so that the filter can be replaced, the bottom plate of the machine shell does not need to be disassembled and assembled in a face raising posture, and therefore the filter can be replaced conveniently and rapidly.

Description

Technical Field

[0001] This utility model relates to the field of fresh air purification technology, specifically to a fresh air purification device and a fresh air air conditioning unit. Background Technology

[0002] Cigarette production workshops need to maintain good ventilation to effectively remove waste gas, smoke and heat generated during the production process.

[0003] When the production workshop is ventilated, the air in the production workshop exchanges with the outside air. In order to prevent outside air carrying impurities such as particulate matter, microorganisms and toxic and harmful gases from being introduced into the production workshop and damaging the quality of tobacco products, a fresh air purification device is installed in the production workshop to filter the outside air.

[0004] During the filtration process, the filters in the fresh air purification unit continuously become clogged with particulate matter and other impurities, necessitating periodic filter replacement. Currently, the filters in these units are horizontally bolted inside. Replacing the filters requires maintenance personnel to first remove the unit's base plate to create operating space, and then use specialized tools to manually remove multiple bolts one by one in the confined space inside the unit, while lying on their back. This process necessitates repeatedly adjusting the tool angle to accommodate bolts in different positions and maintaining a cantilever posture throughout. After removing the old filter, installing the new one requires realigning all bolt holes and tightening the bolts under limited visibility. Therefore, using bolts to install filters makes the entire replacement process extremely cumbersome, time-consuming, and labor-intensive. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that the filters in fresh air purification devices are inconvenient to replace.

[0006] To achieve the above objectives, this utility model provides a fresh air purification device, which includes a housing and a filter. The housing has a ventilation chamber, and the filter is located in the ventilation chamber and is capable of filtering the gas flowing through the ventilation chamber. The filter is detachably inserted into the side wall of the housing, and a seal is formed between the filter and the side wall of the housing. The side wall of the housing is provided with an insertion / removal opening that allows the filter to be inserted and removed. A sealing cover is detachably installed on the outer side of the side wall of the housing, the sealing cover sealing the insertion / removal opening, and a seal is formed between the sealing cover and the filter.

[0007] In some embodiments, two bases are sealed to the side wall of the housing. The two bases are located in the ventilation chamber and are spaced apart along the length of the housing. Each base has a mounting groove extending along the width of the housing. Mounting blocks are sealed to both sides of the filter along the length of the housing, and the two mounting blocks are inserted into the two mounting grooves in a one-to-one correspondence. Each side of the filter along the length of the housing has an elastic sealing layer, and the two elastic sealing layers are respectively attached to the side of the two bases facing the middle of the ventilation chamber in a one-to-one correspondence.

[0008] In some embodiments, the side of the base facing the center of the ventilation chamber is a first side surface, and the side of the base facing away from the center of the ventilation chamber is a second side surface; the mounting groove includes a slot and a sealing groove that are consistent in length direction and of the same length, the slot is recessed from the first side surface toward the second side surface, and there are two sealing grooves, which are located above and below the slot and communicate with the slot, the mounting block is detachably inserted into the slot and the sealing groove, and a seal is formed between the sealing groove and the mounting block.

[0009] In some embodiments, the two sealing grooves are staggered.

[0010] In some embodiments, the mounting block includes an insert block and a sealing block extending along the width direction of the housing. The insert block and the sealing block have the same length. The insert block is sealed and mounted on the side of the filter. The insert block is detachably inserted into a slot. There are two sealing blocks, which are staggered. The two sealing blocks are detachably inserted into two corresponding sealing grooves, and a seal is formed between the sealing blocks and the corresponding sealing grooves.

[0011] In some embodiments, the sealing groove is provided with a first sealing strip on each of the two groove sidewalls along the length of the housing, and the length of the first sealing strip is the same as the length of the sealing groove; the sealing block has recesses on both sides along the length of the housing, the recesses are recessed toward the middle of the sealing block, the length of the recesses is the same as the length of the sealing block, and the two first sealing strips are pressed against the surface of the recesses.

[0012] In some embodiments, the sidewall of the housing is provided with a straight and elastic second sealing strip, which is horizontally aligned with the insertion opening. The two ends of the second sealing strip are flush with the second side surfaces of the two bases, respectively. The portion of the second sealing strip facing the insertion opening is provided with a first sealing groove, the length of which is greater than or equal to the length of the filter. A second sub-sealing strip is provided on one side of the filter along its width direction. The second sub-sealing strip is straight and elastic, and its length is the same as that of the filter. The second sub-sealing strip is embedded in the first sealing groove and presses against each other to form a seal.

[0013] In some embodiments, the sealing cover has a straight-extending and elastic third sealing strip on the side facing the insertion opening. The third sealing strip is horizontally aligned with the insertion opening. The two ends of the second sealing strip are flush with the second side surfaces of the two bases, respectively. The portion of the second sealing strip facing the insertion opening has a second sealing groove. The length of the second sealing groove is greater than or equal to the length of the filter. The other side of the filter along its width direction has a fourth sealing strip. The fourth sealing strip is straight-extending and elastic. The length of the fourth sealing strip is the same as the length of the filter. The fourth sealing strip is embedded in the second sealing groove and presses against each other to form a seal.

[0014] In some embodiments, a sealing ring is provided on the side of the sealing cover facing the ventilation chamber, and the sealing ring surrounds the insertion / removal opening.

[0015] In some embodiments, the sealing cover is detachably mounted to the outside of the side wall of the housing by a plurality of bolts.

[0016] In some embodiments, a plurality of ultraviolet lamps are installed in the ventilation chamber.

[0017] In some embodiments, a plurality of ventilation mechanisms are installed in the ventilation chamber.

[0018] In another aspect, this utility model provides a fresh air conditioning unit, which includes the fresh air purification device described in the above embodiments.

[0019] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0020] When the filter needs to be replaced, the worker removes the sealing cover, exposing the filter to the insertion / removal opening. The filter is then horizontally pulled out of the ventilation chamber through the opening. The new filter is then horizontally inserted into the side wall of the housing through the insertion / removal opening. The sealing cover is then reinstalled on the outside of the side wall of the housing, sealing the insertion / removal opening. The filter replacement is now complete. In this invention, filter replacement can be completed simply by removing the sealing cover from the outside of the housing's side wall, pulling out the old filter, inserting the new filter, and finally reinstalling the sealing cover. This eliminates the need to disassemble the bottom plate of the housing from a supine position, making filter replacement convenient and quick. Furthermore, because the filter forms a seal between itself and both the side wall of the housing and the sealing cover, the air entering the ventilation chamber must be filtered before continuing its flow path, thus achieving excellent filtration. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the installation of a filter according to an embodiment of the present invention;

[0022] Figure 2 This is a horizontal cross-sectional schematic diagram of the filter installation according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection between the sealing block and the sealing groove according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the installation of a sealing cover plate according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the ultraviolet lamp strip of a fresh air purification device according to an embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram of the composition of a filter according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Housing; 11. Base; 111. First side surface; 112. Second side surface; 12. Mounting groove; 121. Slot; 122. Sealing groove; 1221. First sealing strip; 123. Elastic sealing layer; 13. Second sealing strip; 131. First sealing groove;

[0029] 2. Ventilation system;

[0030] 3. Filter; 31. Filter plate; 311. Fiber cotton plate; 312. Glass fiber plate; 32. Receiving cavity; 33. Activated carbon granules; 34. Second sealing strip; 35. Fourth sealing strip;

[0031] 4. Mounting block; 41. Insert block; 42. Sealing block; 421. Recessed part; 5. Ultraviolet lamp.

[0032] 6. Sealing cover plate; 61. Sealing ring; 62. Third sealing strip; 63. Second sealing groove. Detailed Implementation

[0033] The specific embodiments of this utility model are described in detail below. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0034] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the orientation in the assembled and used state. "Inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] like Figure 1 and Figure 2 As shown, this utility model provides a fresh air purification device, which includes a housing 1 and a filter 3. The housing 1 has a ventilation chamber, the filter 3 is located in the ventilation chamber and can filter the gas flowing through the ventilation chamber. The filter 3 is detachably inserted into the side wall of the housing 1, and a seal is formed between the filter 3 and the side wall of the housing 1. The side wall of the housing 1 is provided with a plug-in opening that allows the filter 3 to be plugged in and out. A sealing cover 6 is detachably installed on the outer side of the side wall of the housing 1. The sealing cover 6 seals the plug-in opening, and a seal is formed between the sealing cover 6 and the filter 3.

[0037] Specifically, when filter 3 needs to be replaced, the worker removes the sealing cover 6, exposing filter 3 to the insertion / removal opening, and then horizontally pulls filter 3 out of the ventilation chamber through the insertion / removal opening. The worker then horizontally inserts the new filter 3 through the insertion / removal opening into the side wall of housing 1, and then reinstalls the sealing cover 6 on the outside of the side wall of housing 1, sealing the insertion / removal opening. At this point, filter 3 has been replaced.

[0038] In this invention, filter 3 replacement can be completed simply by removing the sealing cover 6 on the outer side wall of the housing 1, pulling out the old filter 3, inserting the new filter 3, and finally reinstalling the sealing cover 6. This eliminates the need to disassemble the bottom plate of the housing 1 while it is in a supine position. Therefore, this air purification device allows for convenient and quick filter 3 replacement. Furthermore, because the filter 3 forms a seal with both the side wall of the housing 1 and the sealing cover 6, the air entering the ventilation chamber must be filtered by the filter 3 before continuing its flow path, thus achieving a good filtration effect.

[0039] It should be noted that the fresh air purification device has an air inlet, an air outlet, and a ventilation mechanism 2. The air inlet is connected to the outside air. Under the action of the ventilation mechanism 2 installed in the ventilation chamber, outside air can enter the ventilation chamber through the air inlet, and after being filtered by the filter 3, it enters the production workshop through the air outlet.

[0040] In some embodiments of this utility model, two bases 11 are sealed and connected to the side wall of the housing 1. The two bases 11 are located in the ventilation chamber and are spaced apart along the length of the housing 1. The bases 11 are provided with mounting grooves 12 extending along the width of the housing 1. Mounting blocks 4 are respectively sealed and installed on both sides of the filter 3 along the length of the housing 1. The two mounting blocks 4 are respectively inserted into the two mounting grooves 12 in a one-to-one correspondence. The filter 3 is provided with elastic sealing layers 123 on both sides along the length of the housing 1. The two elastic sealing layers 123 are respectively attached to the side of the two bases 11 facing the middle of the ventilation chamber in a one-to-one correspondence.

[0041] Specifically, along the length of the housing 1, the filter 3 is installed on the base 11 located on the inner wall of the housing 1 via the plug-in structure of the mounting groove 12-mounting block 4, thus achieving connection and fixation between the filter 3 and the housing 1. Furthermore, the filter 3 is tightly fitted to the base 11 via the elastic sealing layer 123, ensuring a tight seal between the filter 3 and the housing 1 along the length of the housing 1.

[0042] In some embodiments, in order to ensure that the filter 3 can be securely mounted on the housing 1, the length of the mounting groove 12 of the base 11 and the length of the mounting block 4 are both set to be equal to the length from the plane where the insertion / removal opening is located to the inner wall of the housing 1 opposite the insertion / removal opening. Of course, for better sealing effect, the length of the elastic sealing layer 123 is set to be equal to the length of the mounting block 4.

[0043] In some embodiments, two mounting slots 12 are provided on the same base 11, the two mounting slots 12 are distributed at intervals in the vertical direction, and two mounting blocks 4 are provided on the side of the filter 3 corresponding to the base 11, the two mounting blocks 4 are respectively inserted into the two mounting slots 12; the elastic sealing layer 123 is located between the two mounting blocks 4 and is in contact with the plane of the base 11 located between its two mounting slots 12.

[0044] like Figure 3As shown, in some embodiments of this utility model, the side of the base 11 facing the middle of the ventilation chamber is the first side surface 111, and the side of the base 11 facing away from the middle of the ventilation chamber is the second side surface 112; the mounting groove 12 includes a slot 121 and a sealing groove 122 that are consistent in length direction and of the same length. The slot 121 is recessed from the first side surface 111 toward the second side surface 112. There are two sealing grooves 122, which are located above and below the slot 121 and communicate with the slot 121. The mounting block 4 is detachably inserted into the slot 121 and the sealing groove 122, and a seal is formed between the sealing groove 122 and the mounting block 4.

[0045] Specifically, the mounting groove 12 includes a slot 121 and two sealing grooves 122 located above and below the slot 121, respectively, so that the connection between the filter 3 and the housing 1 is stable at all angles.

[0046] In some embodiments of this utility model, in order to ensure that the forces on each part of the connection between the mounting groove 12 and the mounting block 4 are uniform, the positions of the two sealing grooves 122 are staggered.

[0047] In some embodiments of this utility model, the mounting block 4 includes an insert block 41 and a sealing block 42 extending along the width direction of the housing 1. The insert block 41 and the sealing block 42 have the same length. The insert block 41 is sealed and installed on the side of the filter 3. The insert block 41 is detachably inserted into the slot 121. There are two sealing blocks 42, which are staggered. The two sealing blocks 42 are detachably inserted into the corresponding two sealing grooves 122, and a seal is formed between the sealing block 42 and the corresponding sealing groove 122.

[0048] In some embodiments of this utility model, the sealing groove 122 has two groove sidewalls on the length direction of the housing 1 respectively provided with first sealing strips 1221, the length of the first sealing strips 1221 is the same as the length of the sealing groove 122; the sealing block 42 has recesses 421 on both sides on the length direction of the housing 1, the recesses 421 are recessed toward the middle of the sealing block 42, the length of the recesses 421 is the same as the length of the sealing block 42, and the two first sealing strips 1221 are pressed against the surface of the recesses 421.

[0049] Specifically, in order to enhance the sealing performance of the filter 3 connected to the housing 1 in the length direction, a first sealing strip 1221 extending along its length direction is provided between the sealing block 42 and the sealing groove 122. The length of the first sealing strip 1221 is the same as the length of the sealing groove 122 and equal to the length from the insertion opening to the inner wall of the housing 1 opposite the insertion opening, so that the insertion structure of the mounting groove 12-mounting block 4 also has a sealing function.

[0050] like Figure 4As shown, in some embodiments of this utility model, the side wall of the housing 1 is provided with a straight and elastic second sealing strip 13. The second sealing strip 13 is horizontally aligned with the insertion opening. The two ends of the second sealing strip 13 are flush with the second side surfaces 112 of the two bases 11 respectively. The portion of the second sealing strip 13 facing the insertion opening is provided with a first sealing groove 131. The length of the first sealing groove 131 is greater than or equal to the length of the filter 3. A second sub-sealing strip 34 is provided on one side of the filter 3 along its width direction. The second sub-sealing strip 34 is straight and elastic. The length of the second sub-sealing strip 34 is the same as the length of the filter 3. The second sub-sealing strip 34 is embedded in the first sealing groove 131 and they are pressed together to form a seal.

[0051] Specifically, when the mounting block 4 of the filter 3 is fully inserted into the mounting groove 12, the second sub-seal strip 34 of the filter 3 can be squeezed against the second seal strip 13 of the housing 1 to achieve a seal between the filter 3 and the inner wall of the opposite insertion opening of the housing 1.

[0052] It should be noted that the length of the second sub-seal strip 34 is the same as the length of the filter 3. This facilitates the plug-in installation of the filter 3 and allows the second sub-seal strip 34 to engage with the two mounting blocks 4 of the filter 3 at both ends of the length of the housing 1, so that the corners of the filter 3 are sealed to the inside of the housing 1.

[0053] In some embodiments of this utility model, the sealing cover plate 6 has a straight and elastic third sealing strip 62 on the side facing the insertion opening. The third sealing strip 62 is horizontally aligned with the insertion opening. The two ends of the second sealing strip 13 are flush with the second side surfaces 112 of the two bases 11 respectively. The portion of the second sealing strip 13 facing the insertion opening has a second sealing groove 63. The length of the second sealing groove 63 is greater than or equal to the length of the filter 3. The filter 3 has a fourth sealing strip 35 on the other side along its width direction. The fourth sealing strip 35 is straight and elastic. The length of the fourth sealing strip 35 is the same as the length of the filter 3. The fourth sealing strip 35 is embedded in the second sealing groove 63 and they are pressed together to form a seal.

[0054] Specifically, a fourth sealing strip 35 is provided on the side of the filter 3 facing the insertion opening. The fourth sealing strip 35 presses against the third sealing strip 62 of the sealing cover plate 6 and is fitted and squeezed into the second sealing groove 63 of the third sealing strip 62, thereby achieving a sealed connection between the filter 3 and the sealing cover plate 6.

[0055] like Figure 2 As shown, in some embodiments of this utility model, a sealing ring 61 is provided on the side of the sealing cover plate 6 facing the ventilation chamber, and the sealing ring 61 surrounds the insertion and removal opening.

[0056] Specifically, the sealing cover 6 achieves a sealed connection with the housing 1 through the sealing ring 61. Since the side of the filter 3 facing the insertion opening is sealed with the sealing cover 6, a sealed connection is achieved between the side of the filter 3 facing the insertion opening and the housing 1.

[0057] In some embodiments of this utility model, the sealing cover 6 is detachably installed on the outer side of the side wall of the housing 1 by a plurality of bolts.

[0058] In some embodiments, a sealing gasket is provided between the sealing cover 6 and the housing 1 to ensure the sealing of the connection.

[0059] like Figure 5 As shown, in some embodiments of this utility model, multiple ultraviolet lamps 5 are installed in the ventilation chamber to disinfect microorganisms in the ventilation chamber.

[0060] like Figure 6 As shown, in some embodiments, to ensure good filtration performance of the filter 3, combined filter plates are provided on both the top and bottom surfaces of the filter 3. The combined filter plates, from top to bottom, include a pre-filter plate, a corrugated high-efficiency filter plate, and a straight high-efficiency filter plate. The pre-filter plate is used to filter large particles, and the high-efficiency filter plate is used to filter micro-particles. Furthermore, the corrugated high-efficiency filter plate in the middle layer has a larger contact area, which effectively improves the filtration effect. To remove odors from the air, the filter 3 has a receiving cavity 32 for holding activated carbon particles 33. This receiving cavity 32 is located between two high-efficiency filter plates located on the top and bottom surfaces of the filter 3, respectively. The receiving cavity 32 can freely hold the activated carbon particles 33, or it can be arranged as follows: Figure 6 The tray shown is equipped with multiple placement areas for activated carbon particles 33 to hold the activated carbon particles 33.

[0061] In some embodiments of this utility model, in order to continuously introduce outside air into the ventilation chamber and allow it to enter the production workshop after filtration, multiple ventilation mechanisms 2 are installed in the ventilation chamber.

[0062] In another aspect, this utility model provides a fresh air conditioning unit, which includes the fresh air purification device described in the above embodiments. This fresh air conditioning unit also has the advantages of the above embodiments.

[0063] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0064] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0065] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A fresh air purification device, characterized in that, The fresh air purification device includes a housing (1) and a filter (3); The housing (1) has a ventilation chamber, the filter (3) is located in the ventilation chamber and is capable of filtering the gas flowing through the ventilation chamber, the filter (3) is detachably inserted into the side wall of the housing (1), and a seal is formed between the filter (3) and the side wall of the housing (1); the side wall of the housing (1) is provided with a plug-in opening that allows the filter (3) to be plugged in and out; a sealing cover (6) is detachably installed on the outer side of the side wall of the housing (1), the sealing cover (6) seals the plug-in opening, and a seal is formed between the sealing cover (6) and the filter (3).

2. The fresh air purification device according to claim 1, characterized in that, Two bases (11) are sealed and connected to the side wall of the housing (1). The two bases (11) are located in the ventilation chamber and are spaced apart along the length of the housing (1). Each base (11) has a mounting groove (12) extending along the width of the housing (1). The filter (3) is sealed with mounting blocks (4) on both sides along the length of the housing (1), and the two mounting blocks (4) are respectively inserted into the two mounting slots (12) in a one-to-one correspondence; the filter (3) is provided with elastic sealing layers (123) on both sides along the length of the housing (1), and the two elastic sealing layers (123) are respectively attached to the side of the two bases (11) facing the middle of the ventilation chamber in a one-to-one correspondence.

3. The fresh air purification device according to claim 2, characterized in that, The side of the base (11) facing the middle of the ventilation chamber is the first side surface (111), and the side of the base (11) facing away from the middle of the ventilation chamber is the second side surface (112). The mounting groove (12) includes a slot (121) and a sealing groove (122) that are consistent in length direction and of the same length. The slot (121) is recessed from the first side surface (111) toward the second side surface (112). There are two sealing grooves (122), which are located above and below the slot (121) and communicate with the slot (121). The mounting block (4) is detachably inserted into the slot (121) and the sealing groove (122), and a seal is formed between the sealing groove (122) and the mounting block (4).

4. The fresh air purification device according to claim 3, characterized in that, The two sealing grooves (122) are staggered.

5. The fresh air purification device according to claim 4, characterized in that, The mounting block (4) includes an insert (41) and a sealing block (42) extending along the width direction of the housing (1). The insert (41) and the sealing block (42) have the same length. The insert (41) is sealed and installed on the side of the filter (3). The insert (41) is detachably inserted into the slot (121). There are two sealing blocks (42) and they are staggered. The two sealing blocks (42) are detachably inserted into the corresponding two sealing grooves (122), and a seal is formed between the sealing block (42) and the corresponding sealing groove (122).

6. The fresh air purification device according to claim 5, characterized in that, The sealing groove (122) has two groove sidewalls in the length direction of the housing (1) respectively provided with first sealing strips (1221), and the length of the first sealing strips (1221) is the same as the length of the sealing groove (122); The sealing block (42) has recesses (421) on both sides of the housing (1) along its length. The recesses (421) are recessed toward the middle of the sealing block (42). The length of the recesses (421) is the same as the length of the sealing block (42). The two first sealing strips (1221) are pressed against the surface of the recesses (421).

7. The fresh air purification device according to claim 3, characterized in that, The side wall of the housing (1) is provided with a straight and elastic second sealing strip (13). The second sealing strip (13) is horizontally opposite to the plug-in opening. The two ends of the second sealing strip (13) are respectively flush with the second side surface (112) of the two bases (11). The part of the second sealing strip (13) facing the plug-in opening is provided with a first sealing groove (131). The length of the first sealing groove (131) is greater than or equal to the length of the filter (3). The filter (3) has a second sub-seal strip (34) on one side along its width direction. The second sub-seal strip (34) extends in a straight line and is elastic. The length of the second sub-seal strip (34) is the same as the length of the filter (3). The second sub-seal strip (34) is embedded in the first sealing groove (131) and is pressed against each other to form a seal.

8. The fresh air purification device according to claim 7, characterized in that, The sealing cover (6) has a straight and elastic third sealing strip (62) on the side facing the insertion opening. The third sealing strip (62) is horizontally aligned with the insertion opening. The two ends of the second sealing strip (13) are flush with the second side surfaces (112) of the two bases (11). The portion of the second sealing strip (13) facing the insertion opening has a second sealing groove (63). The length of the second sealing groove (63) is greater than or equal to the length of the filter (3). The filter (3) has a fourth sealing strip (35) on the other side along its width direction. The fourth sealing strip (35) extends in a straight line and is elastic. The length of the fourth sealing strip (35) is the same as the length of the filter (3). The fourth sealing strip (35) is embedded in the second sealing groove (63) and is pressed against each other to form a seal.

9. The fresh air purification device according to claim 1, characterized in that, The sealing cover (6) has a sealing ring (61) on the side facing the ventilation chamber, and the sealing ring (61) surrounds the insertion opening; And / or, the sealing cover (6) is detachably mounted to the outside of the side wall of the housing (1) by a plurality of bolts; And / or, the ventilation chamber is equipped with a plurality of ultraviolet lamps (5); And / or, the ventilation chamber is equipped with multiple ventilation mechanisms (2).

10. A fresh air conditioning unit, characterized in that, The fresh air purification device includes any one of claims 1-9.

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