Multifunctional fresh air door with universality

Abstract

The multifunctional fresh air door comprises a frame body, panels are fixedly connected to the outer walls of the two sides of the frame body, hinges are fixedly connected to the outer wall of one side of the frame body, a fresh air assembly is arranged in the frame body, and the fresh air assembly comprises a draught fan, an air duct pipe, a shell, a spoiler and an air flow channel; the fresh air assembly adopts the design of simultaneous indoor and outdoor air inlet and exhaust, so that air entering and exiting a room is filtered, outdoor polluted air is effectively prevented from entering the room, indoor polluted air can be prevented from being exhausted into the outdoor environment, and the fresh air assembly is integrated in the door plate, does not occupy external space, is attractive and elegant and is suitable for popularization and application. The aesthetic requirements of modern home furnishing and building design are better met; the fresh air assembly can effectively reduce the energy consumption of the air conditioner by performing heat exchange on air entering and exiting a room; and the door plate adjusting assembly can adjust the specification of the fresh air door, so that the fresh air door is more universal, and the problem of door opening and closing jamming is solved.

Description

Technical Field

[0001] The invention relates to the technical field of indoor air treatment, and in particular to a universal multifunctional fresh air door. Background Art

[0002] In recent years, with the decline in air quality, people have become increasingly concerned about indoor air quality. In order to meet the demand for healthy and comfortable indoor air, various types of indoor air treatment equipment have emerged on the market, and fresh air door is one of them. However, the existing fresh air doors have the following defects when in use: 1. The existing fresh air doors include positive pressure type and negative pressure type. The positive pressure fresh air system sends outdoor air into the room, creating an air positive pressure zone indoors. The dirty air or air carrying bacteria and viruses in the room will be discharged through the gaps between doors and windows, causing the external air to be polluted. The negative pressure fresh air system uses the fresh air system to filter the dirty air in the room and then discharge it to the outside, forming a negative pressure indoors. Outdoor air will enter the room through gaps such as window gaps and door gaps. The unfiltered air will contain a lot of dust or particulate matter, thereby reducing the indoor air quality; 2. When using air conditioning indoors, if the existing fresh air doors are used for ventilation, the energy consumption of the air conditioning will be greatly increased; 3. The specifications of the existing fresh air doors are relatively fixed, and their height and width cannot be adjusted. This not only requires the production of multiple models of doors to adapt to different scenarios, but also in the actual installation process, once the precision is not well controlled, the door and the door frame are very easy to contact, causing the door to become stuck when opened and closed. Summary of the invention

[0003] The purpose of the present invention is to provide a versatile multifunctional fresh air door to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a universal multifunctional fresh air door, comprising a frame, panels are fixedly connected to the outer walls on both sides of the frame, a hinge is fixedly connected to the outer wall on one side of the frame, a fresh air component is arranged in the frame, the fresh air component comprises a fan, an air duct pipe, a shell, a spoiler and a gas flow channel, and the shell is fixedly connected to the frame, a spoiler is fixedly connected to the shell, gas flow channels are arranged on both sides of the spoiler, air duct pipes are fixedly connected to both ends of the shell, and the output ends of the two air duct pipes are respectively conductively connected to the two gas flow channels, fans are conductively fixedly connected to the input ends of the two air duct pipes, and the two fans are respectively fixedly connected to the two panels.

[0005] Preferably, air inlet holes are provided at positions corresponding to the fan input ends on the two panels, and an air filter element is threadedly connected to the air inlet hole.

[0006] Preferably, both panels are provided with air outlet holes, and dustproof nets are fixedly connected to the air outlet holes.

[0007] Preferably, a door panel adjustment assembly is installed on the frame, and the door panel adjustment assembly includes a mounting plate, a first door panel, a first slide groove, a mounting hole, a second slide groove, a slider, an adjustment rod, a first wedge block, a limit block, a second wedge block, a limit groove, a first connecting plate, an angle plate, a second connecting plate, a second door panel, a third slide groove, a fourth slide groove and a guide plate, and the mounting plate is fixedly connected to the frame, a first door panel is arranged on one side of the frame, a first slide groove is provided on the first door panel, and the mounting plate is slidably connected to the first slide groove, second slide grooves are provided at both ends of the first door panel, and the first connecting plate is slidably connected to the two second slide grooves One end of the first connecting plate is fixedly connected to a second wedge block, the second wedge block is slidably connected to the first wedge block, the first wedge block is fixedly connected to a slider, and the slider is slidably connected to the second sliding groove, the other end of the first connecting plate is fixedly connected to an angle plate, the angle plate is fixedly connected to the second connecting plate, the second connecting plate is slidably connected to the second door panel, and the two second door panels are respectively arranged on both sides of the frame, a third sliding groove is opened on the second door panel, and the second connecting plate is slidably connected to the third sliding groove, a fourth sliding groove is opened on the second door panel, and a guide plate is slidably connected in the fourth sliding groove, and the guide plate is fixedly connected to the frame.

[0008] Preferably, a second installation groove is provided on the first door panel, an electronic lock is fixedly connected in the second installation groove, and the electronic lock is electrically connected to the fan.

[0009] Preferably, avoidance grooves are provided at positions corresponding to the electronic locks on the two panels.

[0010] Preferably, a limiting groove is provided on the second wedge block, a limiting block is slidably connected in the limiting groove, and the limiting block is fixedly connected to the first wedge block.

[0011] Preferably, the mounting plate and the slider are both provided with adjusting rods, mounting holes are provided on the first slide groove and the second slide groove at positions corresponding to the adjusting rods, and the adjusting rods are rotatably connected in the mounting holes.

[0012] Preferably, the adjusting rod includes a limit rod, a hexagonal groove, a first mounting groove, a sliding sleeve, a spring, a first convex tooth, a locking block, a second convex tooth and a threaded rod. The mounting plate and the sliding block are both threadedly connected with the threaded rod, one end of the threaded rod is fixedly connected with the limit rod, and the limit rod is rotatably connected to the mounting hole. A hexagonal groove is provided at one end of the limit rod, and a first mounting groove is provided on the limit rod. A sliding sleeve is slidably connected in the first mounting groove, a spring is sleeved in the sliding sleeve, and one end of the spring is arranged in the first mounting groove. Locking blocks are meshedly connected on the outer walls of both sides of the sliding sleeve, and the locking blocks are hinged in the first mounting groove.

[0013] Preferably, a plurality of first protruding teeth are evenly distributed on the outer walls of both sides of the sliding sleeve, a plurality of second protruding teeth are arranged on the locking block, and the second protruding teeth are meshingly connected to the first protruding teeth.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the fresh air component of the present invention adopts a simultaneous indoor and outdoor air intake and exhaust design, so that the air entering and leaving the room is filtered, which can effectively prevent outdoor polluted air from entering the room, and also prevent indoor polluted air from being discharged into the outdoor environment. The fresh air component is integrated into the door panel and will not occupy external space. It is beautiful and elegant, and is more in line with the aesthetic needs of modern home and architectural design. The fresh air component can effectively reduce the energy consumption of air conditioning by performing heat exchange on the air entering and leaving the room. The door panel adjustment component can realize the adjustment of the specifications of the fresh air door, making it more universal, and there will be no problem of door jamming when opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention after adjusting the specifications;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the frame of the present invention;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the fresh air component of the present invention;

[0019] Figure 5 It is a schematic diagram of the three-dimensional cutaway structure of the housing of the present invention;

[0020] Figure 6 It is a schematic diagram of the front cutaway structure of the door panel adjustment assembly of the present invention;

[0021] Figure 7 for Figure 6 A magnified view of the structure in the middle A area;

[0022] Figure 8 for Figure 6 A magnified view of the structure in the middle B area;

[0023] Fig. 9 It is a schematic diagram of a three-dimensional cutaway structure of a first door panel of the present invention;

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of the corner plate of the present invention;

[0025] Fig.11 It is a schematic diagram of a three-dimensional cutaway structure of a second door panel of the present invention;

[0026] Fig.12 It is a schematic diagram of the three-dimensional structure of the first wedge block of the present invention;

[0027] Fig.13 It is a schematic diagram of the three-dimensional structure of the second wedge block of the present invention;

[0028] Fig.14 It is a schematic diagram of the three-dimensional structure of the adjusting rod of the present invention;

[0029] Fig.15 It is a schematic diagram of the three-dimensional cross-section structure of the limiting rod of the present invention.

[0030] In the figure: 1, frame; 11, panel; 12, air inlet; 13, air filter; 14, air outlet; 15, dust screen; 16, avoidance slot; 17, hinge; 2, fresh air assembly; 21, fan; 22, air duct; 23, shell; 24, spoiler; 25, gas flow channel; 3, door panel adjustment assembly; 31, mounting plate; 32, first door panel; 33, first slide slot; 34, mounting hole; 35, second slide slot; 36, slider; 37, adjustment rod; 371, limit rod; 372, six Angle groove; 373, first mounting groove; 374, sliding sleeve; 375, spring; 376, first convex tooth; 377, locking block; 378, second convex tooth; 379, threaded rod; 38, first wedge block; 39, limiting block; 310, second wedge block; 311, limiting groove; 312, first connecting plate; 313, angle plate; 314, second connecting plate; 315, second door panel; 316, third slide groove; 317, fourth slide groove; 318, guide plate; 4, second mounting groove; 41, electronic lock. DETAILED DESCRIPTION

[0031] 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.

[0032] Please see attached Figure 1 -Attached Fig.15An embodiment of the present invention is as follows: a versatile multifunctional fresh air door comprises a frame 1, panels 11 are fixedly connected to both side outer walls of the frame 1, hinges 17 are fixedly connected to one side outer wall of the frame 1, a fresh air component 2 is arranged in the frame 1, the fresh air component 2 comprises a fan 21, an air duct pipe 22, a shell 23, a spoiler 24 and a gas flow channel 25, and the shell 23 is fixedly connected to the frame 1, a spoiler 24 is fixedly connected to the shell 23, gas flow channels 25 are arranged on both sides of the spoiler 24, air duct pipes 22 are fixedly connected to both ends of the shell 23, and the output ends of the two air duct pipes 22 are respectively connected to the two gas flow channels 25, and the input ends of the two air duct pipes 22 are connected to the fans 21, The two fans 21 are fixedly connected to the two panels 11 respectively, and the hinge 17 is used to realize the hinge connection between the frame 1 and the door frame. The fresh air component 2 uses the two fans 21 to extract indoor and outdoor air respectively, and inputs them into the two gas flow channels 25 of the shell 23 through the air duct pipe 22, and uses the spoiler 24 to perform heat exchange; the two panels 11 are provided with air inlet holes 12 at the positions corresponding to the input ends of the fans 21, and the air inlet holes 12 are internally threadedly connected with the air filter core 13, the air inlet holes 12 are used for air intake, and the air filter core 13 is used for filtering the incoming airflow; the two panels 11 are provided with air outlet holes 14, and the air outlet holes 14 are fixedly connected with dustproof nets 15, the air outlet holes 14 are used for air outlet, and the dustproof nets 15 are used to prevent dust from the air outlet holes 14;A door panel adjustment assembly 3 is installed on the frame 1, and the door panel adjustment assembly 3 includes a mounting plate 31, a first door panel 32, a first slide groove 33, a mounting hole 34, a second slide groove 35, a slider 36, an adjustment rod 37, a first wedge block 38, a limit block 39, a second wedge block 310, a limit groove 311, a first connecting plate 312, an angle plate 313, a second connecting plate 314, a second door panel 315, a third slide groove 316, a fourth slide groove 317 and a guide plate 318, and the mounting plate 31 is fixedly connected to the frame 1, a first door panel 32 is arranged on one side of the frame 1, a first slide groove 33 is opened on the first door panel 32, and the mounting plate 31 is slidably connected to the first slide groove 33, and second slide grooves 35 are opened at both ends of the first door panel 32, and two second The first connecting plate 312 is slidably connected in the sliding groove 35, one end of the first connecting plate 312 is fixedly connected to the second wedge block 310, the second wedge block 310 is slidably connected to the first wedge block 38, the first wedge block 38 is fixedly connected to the slider 36, and the slider 36 is slidably connected in the second sliding groove 35, the other end of the first connecting plate 312 is fixedly connected to the angle plate 313, the angle plate 313 is fixedly connected to the second connecting plate 314, the second connecting plate 314 is slidably connected to the second door panel 315, and the two second door panels 315 are respectively arranged on both sides of the frame 1, the second door panel 315 is provided with a third sliding groove 316, and the second connecting plate 314 is slidably connected in the third sliding groove 316, and the second door panel 315 is provided with a fourth sliding groove 317, and a guide plate 318 is slidably connected in the fourth slide groove 317, and the guide plate 318 is fixedly connected to the frame 1, the door panel adjustment component 3 adjusts the width of the fresh air door by adjusting the first door panel 32, and adjusts the height of the fresh air door by adjusting the second door panel 315. When the slider 36 is adjusted, the first wedge block 38 on the slider 36 drives the second wedge block 310, and the first connecting plate 312 on the second wedge block 310 slides along the second slide groove 35, and the angle plate 313 on the first connecting plate 312 moves accordingly, and the angle plate 313 drives the second door panel 315 through the second connecting plate 314, and the second door panel 315 slides along the guide plate 318 through the fourth slide groove 317, so as to adjust the height of the fresh air door, and the first door panel 32 is adjusted When the first door panel 32 slides along the mounting plate 31 through the first sliding groove 33, the first door panel 32 drives the first connecting plate 312 through the second sliding groove 35, the first connecting plate 312 drives the angle plate 313, and the second connecting plate 314 on the angle plate 313 slides along the third sliding groove 316, so as to adjust the width of the fresh air door; a second mounting groove 4 is provided on the first door panel 32, an electronic lock 41 is fixedly connected in the second mounting groove 4, and the electronic lock 41 is electrically connected to the fan 21, the second mounting groove 4 is used to accommodate the electronic lock 41, the electronic lock 41 is used to lock the first door panel 32, and is also used to control the fan 21 through networking; avoidance grooves 16 are provided at positions corresponding to the electronic locks 41 on the two panels 11, and the avoidance grooves 16 are used to avoid the electronic locks 41;The second wedge block 310 is provided with a limiting groove 311, and the limiting block 39 is slidably connected in the limiting groove 311, and the limiting block 39 is fixedly connected to the first wedge block 38, and the limiting block 39 is used to cooperate with the limiting groove 311 to achieve the installation between the first wedge block 38 and the second wedge block 310; the mounting plate 31 and the slider 36 are both installed with an adjusting rod 37, and the first slide groove 33 and the second slide groove 35 are provided with a mounting hole 34 at the position corresponding to the adjusting rod 37, and the adjusting rod 37 is rotatably connected to the mounting hole 34, and the adjusting rod 37 is used to adjust the slider 36 and the first door 38 respectively. The adjusting rod 37 comprises a limiting rod 371, a hexagonal groove 372, a first mounting groove 373, a sliding sleeve 374, a spring 375, a first convex tooth 376, a locking block 377, a second convex tooth 378 and a threaded rod 379. The mounting plate 31 and the slider 36 are both threadedly connected with a threaded rod 379. One end of the threaded rod 379 is fixedly connected to the limiting rod 371, and the limiting rod 371 is rotatably connected to the mounting hole 34. A hexagonal groove 372 is provided at one end of the limiting rod 371, and a first mounting groove 373 is provided on the limiting rod 371. A sliding sleeve 374 is slidably connected in the mounting groove 373, a spring 375 is sleeved in the sliding sleeve 374, and one end of the spring 375 is arranged in the first mounting groove 373, and locking blocks 377 are meshed and connected on the outer walls of both sides of the sliding sleeve 374, and the locking blocks 377 are hinged in the first mounting groove 373. When the adjusting rod 37 is installed into the mounting hole 34, the locking block 377 will first be received in the first mounting groove 373, and the spring 375 is in a compressed state. When the locking block 377 is separated from the mounting hole 34, the sliding sleeve 374 is elastically released. 374 will drive the locking block 377 to pop out and reset, and the limiting rod 371 cooperates with the locking block 377 to limit the limiting rod 371 in the installation hole 34. The positions of the slider 36 and the first door panel 32 can be adjusted respectively through two threaded rods 379; a plurality of first protruding teeth 376 are evenly distributed on the outer walls of both sides of the sliding sleeve 374, and a plurality of second protruding teeth 378 are arranged on the locking block 377, and the second protruding teeth 378 are meshed and connected to the first protruding teeth 376. The first protruding teeth 376 cooperate with the second protruding teeth 378 to realize the meshing of the locking block 377 and the sliding sleeve 374. ;

[0033] Working principle: When using the present invention, the fresh air door is installed on the door frame through the hinge 17, and the specifications of the fresh air door are adjusted through the door panel adjustment component 3 to adapt to the specifications of the door frame. Then, the electronic lock 41 is connected to the local area network, and the electronic lock 41 or the fresh air component 2 can be controlled by a mobile phone connected to the local area network. The method for adjusting the specifications of the fresh air door is specifically as follows: insert a hexagonal wrench into the hexagonal groove 372, turn the limit rod 371, and the limit rod 371 drives the threaded rod 379 to rotate. The positions of the slider 36 and the first door panel 32 can be adjusted respectively through the two threaded rods 379. When adjusting the slider 36, the first wedge block 38 on the slider 36 drives the second wedge block 310, and the first connecting plate 312 on the second wedge block 310 moves along the second slide groove 3 5 slides, the angle plate 313 on the first connecting plate 312 moves accordingly, the angle plate 313 drives the second door plate 315 through the second connecting plate 314, and the second door plate 315 slides along the guide plate 318 through the fourth sliding groove 317, so as to adjust the height of the fresh air door. When adjusting the first door plate 32, the first door plate 32 slides along the mounting plate 31 through the first sliding groove 33, the first door plate 32 drives the first connecting plate 312 through the second sliding groove 35, the first connecting plate 312 drives the angle plate 313, and the second connecting plate 314 on the angle plate 313 slides along the third sliding groove 316, so as to adjust the width of the fresh air door. Among them, the limiting block 39 is used to cooperate with the limiting groove 311 to realize the installation between the first wedge block 38 and the second wedge block 310, and the mounting hole The limiting rod 371 part 34 is used to install the adjusting rod 37. The limiting rod 371 cooperates with the locking block 377 to limit the limiting rod 371 in the mounting hole 34. The first convex tooth 376 cooperates with the second convex tooth 378 to realize the meshing of the locking block 377 and the sliding sleeve 374. When the adjusting rod 37 is installed into the mounting hole 34, the locking block 377 will first be received in the first mounting groove 373, and the spring 375 will be in a compressed state. When the locking block 377 is separated from the mounting hole 34, the sliding sleeve 374 will drive the locking block 377 to pop out and reset under the elastic action of the spring 375. When the fresh air component 2 is used, the two fans 21 are used to inhale indoor and outdoor air respectively, and the indoor and outdoor air are respectively passed through the two fans 21. The air enters the air filter element 13 through the air inlet hole 12, and then enters the fan 21, and then is respectively input into the two gas flow channels 25 of the shell 23 through the air duct pipe 22, heat exchange is carried out through the spoiler 24, and then output from the other end of the two gas flow channels 25 respectively. The indoor air after heat exchange will be discharged to the outside through the air outlet hole 14 on the outdoor side panel 11, and the outdoor air after heat exchange will be discharged to the room through the air outlet hole 14 on the indoor side panel 11. Among them, the frame 1 cooperates with the two panels 11 to form a cavity, the dustproof net 15 is used to prevent dust from the air outlet hole 14, the avoidance groove 16 is used to avoid the electronic lock 41, and the second installation groove 4 is used to install the electronic lock 41. The electronic lock 41 adopts an existing networkable smart lock, which is not repeated here.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A versatile multifunctional fresh air door, comprising a frame (1), characterized in that: Panels (11) are fixedly connected to both sides of the outer wall of the frame (1); a hinge (17) is fixedly connected to one side of the outer wall of the frame (1); a fresh air component (2) is arranged in the frame (1); the fresh air component (2) comprises a fan (21), an air duct pipe (22), a shell (23), a spoiler (24) and a gas flow channel (25); the shell (23) is fixedly connected to the frame (1); the shell (23) is fixedly connected to the spoiler (24); gas flow channels (25) are arranged on both sides of the spoiler (24); both ends of the shell (23) are fixedly connected to the air duct pipe (22); the output ends of the two air duct pipes (22) are respectively conductively connected to the two gas flow channels (25); the input ends of the two air duct pipes (22) are conductively fixedly connected to the fans (21); and the two fans (21) are respectively fixedly connected to the two panels (11).

2. The universal multifunctional fresh air door according to claim 1 is characterized in that: Air inlet holes (12) are provided at positions corresponding to the input ends of the fans (21) on the two panels (11), and an air filter element (13) is connected to the inner thread of the air inlet hole (12).

3. The universal multifunctional fresh air door according to claim 1 is characterized in that: Both panels (11) are provided with air outlet holes (14), and dustproof nets (15) are fixedly connected to the air outlet holes (14).

4. The versatile multifunctional fresh air door according to claim 1 is characterized in that: The frame (1) is provided with a door panel adjustment assembly (3), which comprises a mounting plate (31), a first door panel (32), a first slide groove (33), a mounting hole (34), a second slide groove (35), a slider (36), an adjustment rod (37), a first wedge block (38), a limit block (39), a second wedge block (310), a limit groove (311), a first connecting plate (312), an angle plate (313), a second connecting plate (314), a second door panel (3 15), a third slide groove (316), a fourth slide groove (317) and a guide plate (318), and the mounting plate (31) is fixedly connected to the frame (1), a first door panel (32) is provided on one side of the frame (1), a first slide groove (33) is provided on the first door panel (32), and the mounting plate (31) is slidably connected in the first slide groove (33), second slide grooves (35) are provided at both ends of the first door panel (32), and the first connecting member (33) is slidably connected in the two second slide grooves (35). The first connecting plate (312) is fixedly connected to a second wedge block (310) at one end of the first connecting plate (312), the second wedge block (310) is slidably connected to the first wedge block (38), the first wedge block (38) is fixedly connected to a slider (36), and the slider (36) is slidably connected to the second slide groove (35), the other end of the first connecting plate (312) is fixedly connected to an angle plate (313), the angle plate (313) is fixedly connected to a second connecting plate (314), and the second connecting plate (314) is fixedly connected to the second connecting plate (314). ) is slidably connected to a second door panel (315), and the two second door panels (315) are respectively arranged on both sides of the frame (1), a third sliding groove (316) is provided on the second door panel (315), and the second connecting plate (314) is slidably connected in the third sliding groove (316), a fourth sliding groove (317) is provided on the second door panel (315), and a guide plate (318) is slidably connected in the fourth sliding groove (317), and the guide plate (318) is fixedly connected to the frame (1).

5. The versatile multifunctional fresh air door according to claim 4 is characterized in that: The first door panel (32) is provided with a second installation slot (4), an electronic lock (41) is fixedly connected in the second installation slot (4), and the electronic lock (41) is electrically connected to the fan (21).

6. The universal multifunctional fresh air door according to claim 3 is characterized by: Avoidance grooves (16) are provided at positions corresponding to the electronic locks (41) on the two panels (11).

7. The universal multifunctional fresh air door according to claim 4 is characterized in that: The second wedge block (310) is provided with a limiting groove (311), a limiting block (39) is slidably connected in the limiting groove (311), and the limiting block (39) is fixedly connected to the first wedge block (38).

8. The universal multifunctional fresh air door according to claim 4 is characterized in that: An adjusting rod (37) is installed on both the mounting plate (31) and the slider (36); mounting holes (34) are provided at positions corresponding to the adjusting rod (37) on the first sliding groove (33) and the second sliding groove (35); and the adjusting rod (37) is rotatably connected to the mounting hole (34).

9. The universal multifunctional fresh air door according to claim 8, characterized in that: The adjusting rod (37) comprises a limiting rod (371), a hexagonal groove (372), a first mounting groove (373), a sliding sleeve (374), a spring (375), a first protruding tooth (376), a locking block (377), a second protruding tooth (378) and a threaded rod (379); the mounting plate (31) and the sliding block (36) are both threadedly connected with the threaded rod (379); one end of the threaded rod (379) is fixedly connected to the limiting rod (371), and the limiting rod (371) is rotatably connected to the mounting hole (34). A hexagonal groove (372) is formed at one end of the limit rod (371), a first installation groove (373) is formed on the limit rod (371), a sliding sleeve (374) is slidably connected in the first installation groove (373), a spring (375) is sleeved in the sliding sleeve (374), and one end of the spring (375) is arranged in the first installation groove (373), locking blocks (377) are meshedly connected on both side outer walls of the sliding sleeve (374), and the locking blocks (377) are hinged in the first installation groove (373).

10. The universal multifunctional fresh air door according to claim 9, characterized in that: A plurality of first protruding teeth (376) are evenly distributed on the outer walls of both sides of the sliding sleeve (374), a plurality of second protruding teeth (378) are arranged on the locking block (377), and the second protruding teeth (378) are meshedly connected to the first protruding teeth (376).

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