CN219341373U

CN219341373U - Environment-friendly ventilation system for elevator

Info

Publication number: CN219341373U
Application number: CN202320653922.7U
Authority: CN
Inventors: 黄飞; 陈一帆; 宋永安
Original assignee: Jiangsu Hailing Electromechanical Equipment Engineering Co ltd
Current assignee: Jiangsu Hailing Electromechanical Equipment Engineering Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-07-14
Anticipated expiration: 2033-03-29

Abstract

The application discloses elevator environmental protection ventilation system relates to environmental protection elevator technical field, improves the unable intermittent type nature work's of the inside fan of elevator problem, and this elevator environmental protection ventilation system, including the elevator car, the cavity has been seted up to the inside upside of elevator car, four master hydraulic cylinders of cavity inner wall top even fixedly connected with, the corresponding fixedly connected with backup pad of flexible end of master hydraulic cylinder, the even fixedly connected with in backup pad top middle part is vice pneumatic cylinder of three. Through this application, through hose air supply source to annular pipe inside, annular pipe's air outlet passes through connecting tube's shower nozzle, forms a ring shape ventilation zone in passenger district upside for the inside passenger district ventilation of elevator car is more even, and the controller that is located backup pad right side installation can be intermittent type to supply power to the fan, and the time quantum setting wantonly is regularly, not only can reach the purpose of saving power, can also avoid the long-time motor phenomenon of generating heat of fan, further extension motor life.

Description

Environment-friendly ventilation system for elevator

Technical Field

The application relates to the technical field of environment-friendly elevators, in particular to an environment-friendly ventilation system of an elevator.

Background

The elevator is a fixed lifting device serving a specified floor, and due to the structural specificity, the elevator car is often a relatively sealed cavity, the air circulation performance is poor, and the stuffiness feeling in the elevator car is particularly obvious under the condition of more passenger capacity, so that the air supply device is often arranged in the elevator car.

The current elevator environmental protection ventilation system, as described in the patent of bulletin number CN215479074U, the top of the elevator car is provided with an air outlet frame and an air inlet frame, the inside of the air outlet frame and the air inlet frame is respectively provided with an air entraining fan and an air extracting fan, the inner wall of the elevator car is provided with a power switch, the air outlet end of the air extracting fan is provided with an interlayer partition board, the lower side of the interlayer partition board is provided with a sound control switch, the lower side of the power switch is provided with fragrance equipment, the lower surface of the interlayer partition board is provided with an induction aeolian bell, and the top lifting rope of the induction aeolian bell is fixedly connected with the lower surface of the interlayer partition board through viscose.

For the above related art, the inventor considers that the fan in the elevator of this prior art scheme can only be manually turned on when needing ventilation, if turn on for a long time, can waste the power, and simultaneously, if turn off for a long time, can lead to the inside ventilation of elevator not good and produce the peculiar smell again, so this application provides another technical scheme in order to solve this technical problem.

Disclosure of Invention

In order to solve the problem that the fan in the elevator cannot intermittently work, the application provides an elevator environment-friendly ventilation system, which adopts the following technical scheme:

the utility model provides an elevator environmental protection ventilation system, includes the elevator car, and the inside upside of elevator car has seted up the cavity, and four master cylinder of even fixedly connected with in cavity inner wall top, the corresponding fixedly connected with backup pad in telescopic end of master cylinder, the three vice pneumatic cylinder of the even fixedly connected with in backup pad top middle part, the corresponding fixedly connected with fan in telescopic end of vice pneumatic cylinder, both ends air outlet all has the third solenoid valve through the pipe connection around the fan, and the air outlet of third solenoid valve all has the concentrate pipe through the pipe connection, the equal fixedly connected with hose of air outlet of concentrate pipe outside one end left and right sides, the corresponding fixedly connected with ring pipe of hose, a plurality of air outlets that the ring pipe bottom was seted up all run through elevator car inner wall top and fixedly connected with shower nozzle through the pipeline, and time switch is installed on backup pad top right side, and the backup pad top is located time switch rear side and installs the controller.

Through adopting above-mentioned technical scheme, use cavity inner wall top as the strong point through the master cylinder, can make the backup pad reciprocate in the inside of elevator car, and the backup pad top is connected with the fan through vice pneumatic cylinder, it washs and maintains the fan to descend to elevator car inside through the backup pad, and the vice pneumatic cylinder of fan bottom connection is in order to make the fan after entering elevator car passenger area, can descend the height again on the backup pad top, be convenient for workman's clearance maintenance, and the air outlet of both sides is connected with the third solenoid valve around the fan, use the controller can control opening of third solenoid valve, the air outlet of third solenoid valve then is connected with the center tube, the center tube can divide into four passageways with the wind that the fan inhaled, further carry the inside by the hose, and a plurality of air outlets have been seted up to the ring bottom, and the air outlet forms a ring ventilation area through the shower nozzle of connecting tube in elevator car passenger area upside, make elevator car inside passenger area more even, the controller that is located right side installation can supply power to the fan, can set up the motor intermittently, can not set up the motor constantly, the time of day can be more accurate, can reach the time of day can not set up the time of day, the time of day can be further set up, the time of day can be more than the time, the time of day can be used, the time of day can be saved, and the time of day can be increased, can be used, and can reach the time of one's.

Optionally, the left side fixedly connected with heptafluoropropane gas holder in backup pad top, the first solenoid valve with controller electric connection is installed to the gas outlet of heptafluoropropane gas holder, and first solenoid valve has the conversion chamber through the pipe connection, and both ends gas outlet all is in another air inlet department in the center tube bottom through the pipe connection around the conversion chamber.

By adopting the technical scheme, the heptafluoropropane gas storage tank arranged on the left side of the top end of the supporting plate has a fire extinguishing effect, heptafluoropropane is a clean gas chemical fire extinguishing agent which takes chemical fire extinguishment as a main part and has physical fire extinguishing effect, is colorless, odorless, low-toxicity, nonconductive and pollution-free, does not damage the property and the precision facilities, is ideal fire extinguishing gas, the gas outlet of the heptafluoropropane gas storage tank is kept in an open state, the first electromagnetic valve arranged at the gas outlet of the heptafluoropropane gas storage tank can control whether gas in the heptafluoropropane gas storage tank flows out, if a fire occurs in the elevator, the gas in the heptafluoropropane gas storage tank is conveyed into the conversion cavity through a soft pipeline, and is further conveyed into the centralized pipe through the conversion cavity, and the heptafluoropropane gas is dispersed into the elevator through the pipeline by the centralized pipe, so that the aim of fire extinguishing is achieved.

Optionally, an atomizer is installed on the left side of the top end of the supporting plate and positioned at the front side of the heptafluoropropane air storage tank, a second electromagnetic valve electrically connected with the controller is installed at an air outlet of the atomizer, and the second electromagnetic valve is connected to the other air inlet of the conversion cavity through a pipeline.

Through adopting above-mentioned technical scheme, atomizer can atomize liquid to can change liquid, have the peculiar smell to put into champignon essential oil in atomizer stock solution district when the elevator is inside, further carry the conversion intracavity portion through the pipeline with liquid atomizing by atomizer, carry the elevator inside through the pipeline again by the conversion intracavity portion, thereby make the inside peculiar smell of elevator reduce, and atomizer inside also can put into the disinfection water and liquefy, disinfect the elevator inside, but atomizer can not add disinfection alcohol, the inside danger that has of elevator is carried in alcohol vaporization, can take place great danger.

Optionally, a temperature sensor is installed at the bottom end of the support plate.

By adopting the technical scheme, the temperature detector can monitor whether fire occurs in the elevator, and once the fire occurs, the temperature detector converts the characteristic physical quantity of the fire, such as temperature, smoke, gas, radiation intensity and the like into an electric signal, and immediately sends an alarm signal to the controller, and the fire extinguishing device is further started to extinguish the fire.

Optionally, the left and right sides air exit department of elevator car all is provided with and strains a section of thick bamboo, and elevator car left and right sides are located and strain the inboard all threaded connection of section of thick bamboo and have the lid.

Through adopting above-mentioned technical scheme, perhaps offer the air exit in the elevator is inside when supplying air, be located the small particle thing in the section of thick bamboo removable gas that the air exit set up, also can prevent simultaneously that the outside gas of car from getting into the car from the air exit inside, and be located the lid and the air exit department threaded connection of straining the interior survey of section of thick bamboo, not only be convenient for open, still be convenient for take out and strain a section of thick bamboo and change or wash, the upper and lower both sides of straining a section of thick bamboo all are connected with little iron bar, and the spout has been seted up to the upper and lower both sides of air exit inner wall, and the section of thick bamboo of being convenient for takes out.

Optionally, the fan top penetrates the cavity and is arranged at the top end of the elevator car.

Through adopting above-mentioned technical scheme, the top of fan runs through the cavity and sets up the air inlet department at elevator car top, and the flabellum of guarantee fan is in the elevator outside for inside smooth and easy ventilation of elevator.

Optionally, the annular tube is mounted at the bottom end of the inner wall of the cavity.

Through adopting above-mentioned technical scheme, the inner wall bottom at the cavity is installed to annular pipe bottom can avoid rocking, and the elevator reciprocates the in-process annular pipe and assumes not to fix, can rock in the cavity inside.

Optionally, a filter screen is installed at the air inlet at the top end of the elevator car.

Through adopting above-mentioned technical scheme, the filter screen appearance is hollow hemisphere lid, can filter the inside gas of elevator to inhaling in advance, also can prevent simultaneously that there is debris inside the elevator shaft from dropping and damaging ventilation equipment.

In summary, the present application includes at least one of the following beneficial effects:

1. the supporting plate is descended into the elevator car to facilitate cleaning and maintenance of the fan, the concentration pipe can divide the air sucked by the fan into four channels, the air is further conveyed into the annular pipe through the hose, an annular ventilation area is formed at the upper side of a passenger area of the elevator car through a nozzle of the connecting pipe, the passenger area in the elevator car is ventilated more uniformly, a controller arranged on the right side of the supporting plate can supply power to the fan intermittently, the timing can be set in any time period, the switching times set in a single day can be multiple groups, the purpose of saving power supply can be achieved, the long-time motor heating phenomenon of the fan can be avoided, and the service life of the motor is further prolonged;

2. the gas inside the gas storage tank through the heptafluoropropane is conveyed to the conversion cavity by the soft pipeline, and is further conveyed to the centralized pipe by the conversion cavity, and the heptafluoropropane gas is dispersed to the inside of the elevator by the centralized pipe through the pipeline, so that the aim of fire extinguishment is achieved, the liquid can be atomized by the atomizing nozzle, when the inside peculiar smell of the elevator can be put into the aromatherapy essential oil in the liquid storage area of the atomizing nozzle, the liquid is further atomized by the atomizing nozzle and conveyed to the inside of the conversion cavity through the pipeline, and then conveyed to the inside of the elevator through the pipeline by the conversion cavity, so that the peculiar smell inside the elevator is reduced.

Drawings

Fig. 1 is a schematic diagram of an upper internal structure of an elevator environmental protection ventilation system according to the present application;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic structural view of an annular pipe in the environment-friendly ventilation system of the elevator;

fig. 4 is a schematic view of a partial structure of an environment-friendly ventilation system of an elevator according to the present application;

fig. 5 is an overall perspective view of an elevator environmental protection ventilation system of the present application;

fig. 6 is a schematic structural view of a filter cartridge in an annular tube in an elevator environmental protection ventilation system according to the present application.

Reference numerals illustrate: 1. a filter screen; 2. an elevator car; 3. a filter cartridge; 4. a hose; 5. an annular tube; 6. a concentration tube; 7. a master hydraulic cylinder; 8. a blower; 9. a first electromagnetic valve; 10. a heptafluoropropane gas storage tank; 11. an auxiliary hydraulic cylinder; 12. a second electromagnetic valve; 13. an atomizing nozzle; 14. a controller; 15. a time-controlled switch; 16. a support plate; 17. a switching chamber; 18. a third electromagnetic valve; 19. a spray head; 20. a temperature sensing detector; 21. a cover; 22. a cavity.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The application discloses elevator environmental protection ventilation system. Referring to fig. 1, fig. 2, fig. 3 and fig. 4, this elevator environmental protection ventilation system, including elevator car 2, cavity 22 has been seted up to the inside upside of elevator car 2, four main hydraulic cylinders 7 of even fixedly connected with in cavity 22 inner wall top, the corresponding fixedly connected with backup pad 16 of the flexible end of main hydraulic cylinder 7, the even fixedly connected with three auxiliary hydraulic cylinders 11 in backup pad 16 top middle part, the corresponding fixedly connected with fan 8 of the flexible end of auxiliary hydraulic cylinder 11, both ends air outlet all has third solenoid valve 18 through the pipe connection around the fan 8, the air outlet of third solenoid valve 18 all has concentrated pipe 6 through the pipe connection, the air outlet of concentrated pipe 6 outside one end left and right sides all fixedly connected with hose 4, the corresponding fixedly connected with annular pipe 5 of hose 4, a plurality of air outlets that the annular pipe 5 bottom was seted up all run through elevator car 2 inner wall top and fixedly connected with shower nozzle 19 through the pipe, time switch 15 is installed on backup pad 16 top right side, time switch 15 is installed to backup pad 16 top be located time switch 15 rear side with third solenoid valve 18, fan 8 and time switch 15 electric connection's controller 14.

In this embodiment, the top end of the inner wall of the cavity 22 is used as a supporting point by the main hydraulic cylinder 7, so that the supporting plate 16 can move up and down in the elevator car 2, the top end of the supporting plate 16 is connected with the fan 8 through the auxiliary hydraulic cylinder 11, the supporting plate 16 descends into the elevator car 2 to facilitate cleaning and maintenance of the fan 8, the auxiliary hydraulic cylinder 11 connected with the bottom end of the fan 8 can jack itself to the air inlet of the top end of the elevator car 2, the fan 8 descends again on the top end of the supporting plate 16 after entering the passenger area of the elevator car 2, cleaning and maintenance of the fan 8 are facilitated for workers, the air outlets on the front side and the rear side of the fan 8 are connected with the third electromagnetic valve 18, the controller 14 can control the opening of the third electromagnetic valve 18, the air outlet of the third electromagnetic valve 18 is connected with the collecting pipe 6, the collecting pipe 6 can divide the air sucked by the fan 8 into four channels, further is conveyed into the annular pipe 5 by the hose 4, the bottom end of the annular pipe 5 is provided with a plurality of air outlets, and the air outlets form a circular ventilation area on the upper side of the passenger area of the elevator car 2 through a nozzle 19 of a connecting pipeline, so that ventilation of the passenger area in the elevator car 2 is more uniform, the controller 14 is arranged on the right side of the supporting plate 16, wherein the controller 14 can be a produced toshiba door machine controller, the model of which is DCU-110A, the time control switch 15 can be a microcomputer time control switch produced by ZheEmulon electric company, the model of which is KG316T, the microcomputer time control switch can supply power to the fan 8 in a mode of day or week cycle and opening and closing of a control circuit of a plurality of time periods, is very convenient, can be set at any time period, can be cyclically operated in different week combinations, the daily switching time periods can be respectively set, the switching times can be set up to a plurality of groups by a minute, by the method, the purpose of saving power can be achieved, the phenomenon that the fan 8 heats a motor for a long time can be avoided, and the service life of the motor is further prolonged.

In addition, referring to fig. 2 and 3, the left side of the top end of the supporting plate 16 is fixedly connected with a heptafluoropropane gas storage tank 10, the gas outlet of the heptafluoropropane gas storage tank 10 is provided with a first electromagnetic valve 9 electrically connected with a controller 14, the first electromagnetic valve 9 is connected with a switching cavity 17 through a pipeline, the gas outlets at the front end and the rear end of the switching cavity 17 are both connected at the other gas inlet at the bottom end of a centralized pipe 6 through pipelines, wherein the heptafluoropropane gas storage tank 10 arranged at the left side of the top end of the supporting plate 16 has a fire extinguishing effect, heptafluoropropane is a clean gas chemical fire extinguishing agent which mainly has a chemical fire extinguishing effect and has a physical fire extinguishing effect, is colorless, odorless, low-toxic, nonconductive and does not pollute protected objects, does not damage property and precision facilities, is an idealized fire extinguishing gas, the gas outlet of the heptafluoropropane gas storage tank 10 is kept in an open state, the first electromagnetic valve 9 arranged at the gas outlet of the heptafluoropropane gas storage tank 10 can control whether the gas in the heptafluoropropane gas storage tank 10 flows out, wherein the controller 14 can control the normal opening of the first electromagnetic valve 9, if the fire occurs inside the elevator, the gas in the elevator is conveyed from the heptafluoropropane gas storage tank 10 to the inside the switching cavity 17 through the pipeline to the internal pipeline, and the air is further conveyed to the centralized in the centralized pipe 6 through the switching cavity 6, thereby achieving the purpose of the fire extinguishing.

In addition, referring to fig. 2 and 3, the left side of the top end of the supporting plate 16 is provided with the atomizing nozzle 13 at the front side of the heptafluoropropane air storage tank 10, the air outlet of the atomizing nozzle 13 is provided with the second electromagnetic valve 12 electrically connected with the controller 14, the second electromagnetic valve 12 is connected with the other air inlet of the switching cavity 17 through a pipeline, wherein the atomizing nozzle 13 can atomize liquid and can change the liquid, when the odor in the elevator is provided with the aromatherapy essential oil in the liquid storage area of the atomizing nozzle 13, the liquid is further atomized by the atomizing nozzle 13 and conveyed into the switching cavity 17 through the pipeline, and then the liquid is conveyed into the elevator through the switching cavity 17 through the pipeline, so that the odor in the elevator is reduced, disinfection water, 84 disinfectant and the like can be put into the inside of the atomizing nozzle 13 to be liquefied, the elevator is disinfected, but the sterilizing alcohol cannot be added into the atomizing nozzle 13, the alcohol is vaporized and conveyed into the elevator, a danger is generated, and a large danger is generated, and the ejection of objects in the atomizing nozzle 12 can be started by the controller 14.

Further, referring to fig. 5 and 6, the bottom end of the supporting plate 16 is provided with a temperature sensor 20, the temperature sensor 20 is a ubiquitous temperature sensing device in the market, wherein the temperature sensor 20 can adopt a produced wile-keeping intelligent temperature sensor, the model is PW-600T, the temperature sensor 20 can monitor whether fire occurs in an elevator, once the fire occurs, the temperature sensor converts characteristic physical quantities of the fire, such as temperature, smoke, gas, radiation intensity and the like into an electric signal, and immediately sends an alarm signal to a controller, liquid in the heptafluoropropane gas storage tank 10 is sprayed out through the collecting pipe 6 to extinguish fire, air outlet openings on the left side and the right side of the elevator car 2 are provided with filter cylinders 3, the left side and the right side of the elevator car 2 are provided with covers 21 in threaded connection, the elevator car is also provided with air outlet openings while the elevator is supplying air, small particles in the air can be removed from the elevator car, the air outside the elevator car can be prevented from entering the elevator car, the covers 21 in the elevator car are connected with the air outlet openings through threads, the covers 21 in the elevator car are not convenient to take out the elevator car, the filter cylinders 3 are convenient to take out the filter cylinders, or the elevator car is provided with air outlet grooves on the upper and lower sides and lower side of the elevator car is convenient to clean the elevator filter cylinders, and the filter cylinders are convenient to take out.

Specifically speaking, referring to fig. 1, fig. 5, the cavity 22 is run through on the top of elevator car 2 in the cavity 8 top, the top of fan 8 runs through cavity 22 and sets up the income wind gap department on elevator car 2 top, ensure that the flabellum of fan 8 is in the elevator is outside, make the inside smooth and easy ventilation of elevator, ring pipe 5 installs in cavity 22 inner wall bottom, ring pipe 5 installs in cavity 22's inner wall bottom can avoid rocking in the elevator reciprocates the in-process ring pipe 5 and supposedly not fixed, can rock in cavity 22 inside, elevator car 2 top air intake department installs filter screen 1, filter screen 1 appearance is hollow hemisphere lid, can filter the inside gas of elevator of inhaling in advance, also can prevent that the elevator shaft from having debris to drop to damage ventilation equipment in the meantime.

Specifically, the controller 14 is electrically connected with the time control switch 15, so that the fan 8 can be controlled to be normally turned on, and when a fire condition is detected by the temperature detector 20, a signal can be transmitted to the controller 14, the fan 8 is powered off by the controller 14, the third electromagnetic valve 18 is closed, the first electromagnetic valve 9 is opened, so that gas in the heptafluoropropane gas storage tank 10 can be conveyed into the elevator, the second electromagnetic valve 12 is kept in a closed state all the time in a non-use state, when disinfection or aromatherapy is required in the elevator, the first electromagnetic valve 9 is required to be in a closed state, the second electromagnetic valve 12 is controlled to be turned on by the controller 14, and vaporized liquid is conveyed into the elevator along a ventilation pipeline.

Finally, the air outlets on the front side and the rear side of the blower 8 are connected with a third electromagnetic valve 18, the controller 14 is used for controlling the opening of the third electromagnetic valve 18, the air outlet of the third electromagnetic valve 18 is connected with a centralized pipe 6, the centralized pipe 6 can divide the air sucked by the blower 8 into four channels, the air is further conveyed into the annular pipe 5 by the hose 4, the bottom end of the annular pipe 5 is provided with a plurality of air outlets, the air outlets form a circular ventilation area on the upper side of a passenger area of the elevator car 2 through a nozzle 19 connected with the pipeline, so that the ventilation of the passenger area in the elevator car 2 is more uniform, the first electromagnetic valve 9 arranged at the air outlet of the heptafluoropropane air storage tank 10 can control whether the air in the heptafluoropropane air storage tank 10 flows out or not, if a fire occurs in the elevator, the air in the heptafluoropropane air storage tank 10 is conveyed into the conversion cavity 17 through the soft pipeline, the conversion cavity 17 is further conveyed into the centralized pipe 6, and the heptafluoropropane air is dispersed into the elevator through the pipeline by the centralized pipe 6.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An elevator environmental protection ventilation system, includes elevator car (2), its characterized in that: the elevator car is characterized in that a cavity (22) is formed in the upper side of the inside of the elevator car (2), four main hydraulic cylinders (7) are uniformly and fixedly connected to the top end of the inner wall of the cavity (22), a supporting plate (16) is fixedly connected to the telescopic ends of the main hydraulic cylinders (7) correspondingly, three auxiliary hydraulic cylinders (11) are uniformly and fixedly connected to the middle of the top end of the supporting plate (16), a fan (8) is fixedly connected to the telescopic ends of the auxiliary hydraulic cylinders (11) correspondingly, third electromagnetic valves (18) are connected to the air outlets at the front end and the rear end of the fan (8) through pipelines, a concentrated pipe (6) is connected to the air outlets of the third electromagnetic valves (18) through pipelines, a hose (4) is fixedly connected to the air outlets at the left side and the right side of one end of the concentrated pipe (6), a plurality of air outlets formed in the bottom end of the annular pipe (5) penetrate through the top end of the inner wall of the elevator car (2) through pipelines and are fixedly connected with a spray head (19), a time control switch (15) is arranged on the right side of the top end of the supporting plate (16), and the time control switch (16) is arranged on the rear side of the controller (14).

2. An elevator environmental protection ventilation system according to claim 1, characterized in that: the novel solar energy collecting device is characterized in that a heptafluoropropane gas storage tank (10) is fixedly connected to the left side of the top end of the supporting plate (16), a first electromagnetic valve (9) electrically connected with a controller (14) is installed at the gas outlet of the heptafluoropropane gas storage tank (10), a conversion cavity (17) is connected to the first electromagnetic valve (9) through a pipeline, and gas outlets at the front end and the rear end of the conversion cavity (17) are connected to another gas inlet at the bottom end of the collecting pipe (6) through pipelines.

3. An elevator environmental protection ventilation system according to claim 2, characterized in that: an atomization nozzle (13) is arranged on the left side of the top end of the supporting plate (16) and positioned on the front side of the heptafluoropropane air storage tank (10), a second electromagnetic valve (12) electrically connected with a controller (14) is arranged at an air outlet of the atomization nozzle (13), and the second electromagnetic valve (12) is connected to the other air inlet of the conversion cavity (17) through a pipeline.

4. An elevator environmental protection ventilation system according to claim 1, characterized in that: a temperature sensing detector (20) is arranged at the bottom end of the supporting plate (16).

5. An elevator environmental protection ventilation system according to claim 1, characterized in that: the elevator car is characterized in that filter cartridges (3) are arranged at air outlet openings on the left side and the right side of the elevator car (2), and covers (21) are connected with the left side and the right side of the elevator car (2) on the inner side of the filter cartridges (3) in a threaded mode.

6. An elevator environmental protection ventilation system according to claim 1, characterized in that: the top end of the fan (8) penetrates through the cavity (22) and is arranged at the top end of the elevator car (2).

7. An elevator environmental protection ventilation system according to claim 1, characterized in that: the annular pipe (5) is arranged at the bottom end of the inner wall of the cavity (22).

8. An elevator environmental protection ventilation system according to claim 1, characterized in that: a filter screen (1) is arranged at an air inlet at the top end of the elevator car (2).