Fresh air system of elevator car

Abstract

The utility model relates to the technical field of elevators, in particular to a fresh air system of an elevator car. A fresh air system of an elevator car comprises a handrail arranged on the elevator car; the handrail is provided with an air inlet, an air outlet and an air duct, and the air duct is arranged in the handrail and used for communicating the air inlet with the air outlet; the ventilation device comprises a fan and a driving part, the fan is rotatably arranged in the air duct, and the driving part is used for driving the fan to rotate; and the air guide device communicates with the air inlet and is used for guiding airflow to the air inlet in the ascending / descending process of the lift car. According to the elevator car fresh air system, the elevator handrail and the fresh air system are combined.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and particularly to a fresh air system for an elevator car. Background Art

[0002] In modern society, elevators are vertical transportation tools frequently used in people's daily lives and work. However, the air circulation in elevators is often poor, especially when there are many people, which easily leads to a decline in air quality, poor riding comfort, and an increased risk of pathogen transmission. Most of the existing fresh air systems for elevator cars achieve air circulation through fans, but traditional fans are generally installed on the car top, and this layout has many obvious drawbacks. First, it will occupy the maintenance space on the car top; during the daily maintenance and repair of the elevator, the car top is an area that technicians focus on, and the presence of the fan makes the maintenance space on the car top more cramped, bringing many inconveniences to the repair work. At the same time, traditional elevator car handrails only have a supporting function and are relatively single in function. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a fresh air system for an elevator car that combines an elevator handrail and a fresh air system.

[0004] A fresh air system for an elevator car includes:

[0005] A handrail provided on the car; the handrail is provided with an air inlet, an air outlet and an air duct, the air duct is arranged inside the handrail for communicating the air inlet and the air outlet, the air outlet is communicated with the inside of the car, and the air inlet is communicated with the air outside the car;

[0006] A ventilation device including a fan and a driving component, the fan is rotatably arranged in the air duct, and the driving component is used to drive the fan to rotate;

[0007] An air guiding device communicated with the air inlet, and is used to guide the air flow to the air inlet during the upward / downward movement of the car.

[0008] In one embodiment, the driving component includes a driving part and a control part, the driving part is connected to the fan to drive the fan to rotate, and the control part is electrically connected to the driving part to control the driving part to be turned on / off.

[0009] In one embodiment, the driving component further includes a power generation component and a storage battery, the power generation component is arranged in the air duct and is connected to the storage battery; when the air flow passes through the air duct, the power generation component can generate electricity to supply power to the storage battery; the control part is electrically connected to the storage battery to control the storage battery to supply power to / disable power supply to the driving part.

[0010] In one embodiment, the power generation assembly includes a wind turbine and a generator. The wind turbine is rotatably disposed in the air duct; the wind turbine is connected to the generator, and the generator is electrically connected to the storage battery; the wind turbine is used to drive the generator to generate electricity when the wind turbine rotates to supply power to the storage battery.

[0011] In one embodiment, the air guiding device is disposed outside the car, and the handrail is disposed inside the car; an opening is formed in the side wall of the car, and the opening communicates with the air guiding device and the air inlet.

[0012] In one embodiment, the air guiding device includes a main body and an air guiding channel disposed on the main body. The main body is connected to the side wall of the car; along the height direction of the car, the main body has a top and a bottom. One end of the air guiding channel extends to the side where the main body is connected to the car and communicates with the air inlet, and the other end of the air guiding channel extends to the top and / or the bottom.

[0013] In one embodiment, the air guiding channel includes a first sub-channel and a second sub-channel. One end of the first sub-channel extends to the top of the main body, and the other end extends to the side where the main body is connected to the car and communicates with the air inlet; one end of the second sub-channel extends to the bottom of the main body, and the other end extends to the side where the main body is connected to the car and communicates with the air inlet.

[0014] In one embodiment, the first sub-channel and the second sub-channel are connected to each other on the side close to the air inlet.

[0015] In one embodiment, the air outlet includes a plurality of air outlet holes disposed on the surface of the handrail. The plurality of air outlet holes are distributed along the length direction of the handrail and are respectively communicated with the air duct; a filter screen is disposed on the handrail. The filter screen is detachably connected to the handrail and covers the air outlet.

[0016] In one embodiment, the air outlet includes a first air outlet and a second air outlet. The first air outlet is formed at a position on the handrail corresponding to the air outlet direction of the fan, and the second air outlet is formed at a position on the handrail corresponding to the air outlet direction of the wind turbine.

[0017] Compared with the prior art, the fresh air system of the elevator car can deliver fresh air into the car through the air inlet, air outlet and air duct arranged on the handrail, and a fan is arranged in the air duct, so that the handrail can improve the air quality in the car. The elevator handrail and the fresh air system are cleverly combined to make full use of the internal space of the elevator and realize function integration. Through the arrangement of the air guiding device, the air flow can be guided into the car during the upward / downward movement of the car, and then the fan can be started only when the elevator stops or the air in the elevator is poor, saving energy consumption. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the fresh air system for an elevator car provided by the present application assembled on the car.

[0020] Figure 2 It is a schematic structural diagram of the fresh air system for an elevator car provided by the present application.

[0021] Figure 3 It is a schematic structural diagram of the ventilation device provided by the present application.

[0022] Figure 4 It is a front view of the handrail provided by the present application.

[0023] Reference numerals: 100, car; 100a, opening; 10, handrail; 11, air inlet; 12, air outlet; 121, first air outlet; 122, second air outlet; 123, air outlet hole; 124, filter; 13, air duct; 20, ventilation device; 21, fan; 211, central axis; 212, impeller; 22, driving component; 221, driving part; 222, control part; 23, power generation component; 231, wind wheel; 231a, wheel shaft; 231b, wheel blade; 232, generator; 24, storage battery; 30, air guiding device; 31, body; 311, top; 312, bottom; 32, air guiding channel; 321, first sub-channel; 322, second sub-channel. Detailed Embodiments

[0024] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will give a detailed description of the specific embodiments of the present application with reference to the drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for illustrative purposes and do not represent the only implementation.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0029] Please refer to Figures 1 to 4, this application provides a fresh air system for an elevator car. The fresh air system for the elevator car includes a handrail 10, a ventilation device 20, and a wind guiding device 30. Among them, the handrail 10 is provided on the car 100. An air inlet 11, an air outlet 12, and an air duct 13 are formed on the handrail 10. The air duct 13 is provided inside the handrail 10 for communicating the air inlet 11 and the air outlet 12. The air outlet 12 is unidirectionally communicated with the inside of the car 100, and the air inlet 11 is communicated with the air outside the car 100. The ventilation device 20 includes a fan 21 and a driving component 22. The fan 21 is rotatably provided in the air duct 13, and the driving component 22 is used to drive the fan 21 to rotate. The wind guiding device 30 is communicated with the air inlet 11 and is used to guide the air flow to the air inlet 11 during the upward / downward movement of the car 100.

[0030] It can be understood that during the upward / downward movement of the car 100, the wind guiding device 30 guides the air flow outside the car 100 to the air inlet 11, and then the air inlet 11 transports it to the position of the air outlet 12 through the air duct 13, and finally transports it into the car 100 from the air outlet 12, realizing the transportation of fresh air into the car 100. When the car 100 is in a stopped state, or the air in the car 100 is too poor, the driving component 22 will drive the fan 21 to rotate, actively suck the external air into the air duct 13, and transport it into the car 100 from the air outlet 12.

[0031] Since the air inlet 11, the air outlet 12, and the air duct 13 are provided on the handrail 10, and the fan 21 is provided in the air duct 13, the elevator handrail 10 is cleverly combined with the fresh air system, making full use of the internal space of the elevator and realizing function integration. During the operation of the elevator, fresh air is continuously transported into the car 100, improving the air quality in the car 100. Especially when there are many people, it can effectively avoid air pollution, reduce the generation of odors, and improve the comfort of taking the elevator. Secondly, the driving component 22 can be started only when the elevator stops or the air in the elevator is poor to drive the fan 21 to rotate, without continuously working throughout the whole process of elevator operation, effectively reducing energy consumption.

[0032] Specifically, the driving component 22 includes a driving part 221 and a control part 222. Among them, the driving part 221 is connected to the fan 21 to drive the fan 21 to rotate. The control part 222 is electrically connected to the driving part 221 to control the driving part 221 to turn on / off. Through the setting of the control part 222, the driving part 221 can be more accurately controlled to start only when the elevator stops or the air in the elevator is poor to drive the fan 21 to rotate, effectively reducing energy consumption.

[0033] In one embodiment, the fan 21 includes a central shaft 211 and an impeller 212. The impeller 212 is connected to the central shaft 211 and can rotate around the center line of the central shaft 211. One end of the central shaft 211 is rotatably inserted through the armrest 10, and the other end is connected to the drive shaft of the driving member 221. When the drive shaft rotates, it will drive the central shaft 211 to rotate, and then drive the fan 21 to rotate.

[0034] Exemplarily, the driving member 221 can be a motor. The control member 222 can be a PLC controller or a single-chip microcomputer.

[0035] Further, the driving component 22 further includes a power generation assembly 23 and a storage battery 24. The power generation assembly 23 is disposed in the air duct 13 and is connected to the storage battery 24. When the air flow passes through the air duct 13, the power generation assembly 23 can generate electricity to supply power to the storage battery 24. The control member 222 is electrically connected to the storage battery 24 to control the storage battery 24 to supply power to / cut off power from the driving member 221.

[0036] Understandably, during the upward / downward movement of the car 100, the air guiding device 30 guides the air flow outside the car 100 into the air duct 13. When the air flow passes through the air duct 13, it can enable the power generation assembly 23 to generate electricity, and the electric energy can be stored in the storage battery 24. Furthermore, during the operation of the elevator, the mechanical energy is converted into electric energy and stored by means of air flow, realizing the recycling of energy, providing stable power support for the operation of the fresh air system, and reducing the dependence on external energy.

[0037] In one embodiment, the storage battery 24 is disposed in the armrest 10. In this structure, the electric quantity stored in the storage battery 24 after the power generation assembly 23 generates electricity is sufficient to support the electric energy demand for starting the driving member 221, so that there is no need for an additional wiring design, making the installation process more convenient and efficient. It can be installed and used without affecting the original electrical system of the elevator, avoiding the potential safety hazards and increased installation costs caused by complex wiring. At the same time, the reliability and stability of the system are improved, and the difficulty and cost of later maintenance are reduced.

[0038] Specifically, the power generation assembly 23 includes a wind wheel 231 and a generator 232. The wind wheel 231 is connected to the generator 232, and the generator 232 is electrically connected to the storage battery. The wind wheel 231 is rotatably disposed in the air duct 13, and the wind wheel 231 is used to drive the generator 232 to generate electricity to supply power to the storage battery 24 when the wind wheel 231 rotates.

[0039] In one embodiment, the wind wheel 231 includes a wheel shaft 231a and wheel blades 231b. A plurality of wheel blades 231b are provided and are arranged in an impeller shape outside the wheel shaft 231a. When the wheel shaft 231a rotates, it can drive the wheel blades 231b to rotate, thereby guiding the air flow.

[0040] Exemplarily, the generator 232 is a small generator 232, and its model can be selected according to actual needs. The generator 232 is also arranged in the air duct 13, and the rotor of the generator 232 is connected to the wheel shaft 231a. When the wheel shaft 231a rotates, the rotor of the generator 232 can be driven to rotate synchronously, and the generator 232 can generate electricity.

[0041] In one embodiment, the air guiding device 30 is arranged outside the car 100, and the handrail 10 is arranged inside the car 100. An opening 100a is formed on the side wall of the car 100, and the opening 100a communicates with the air guiding device 30 and the air inlet 11. The air guiding device 30 is arranged outside the car 100, and the internal structure of the car 100 does not need to be changed.

[0042] Furthermore, the position of the opening 100a is set corresponding to the position of the air inlet 11 of the handrail 10. When the handrail 10 and the air guiding device 30 are respectively fixed on the car 100, the air guiding device 30 can communicate with the air inlet 11 through the opening 100a, ensuring that the air flow outside the car 100 is guided by the air guiding device 30 to the air inlet 11.

[0043] Specifically, the air guiding device 30 includes a main body 31 and an air guiding channel 32 arranged on the main body 31. Among them, the main body 31 is connected to the side wall of the car 100. Along the height direction of the car 100, the main body 31 has a top 311 and a bottom 312. One end of the air guiding channel 32 extends to the side where the main body 31 is connected to the car 100 and communicates with the air inlet 11. The other end of the air guiding channel 32 extends to the top 311, and / or, the bottom 312.

[0044] In this embodiment, the other end of the air guiding channel 32 extends to the top 311 and the bottom 312. Specifically, the air guiding channel 32 includes a first sub-channel 321 and a second sub-channel 322. Among them, one end of the first sub-channel 321 extends to the top 311 of the main body 31, and the other end extends to the side where the main body 31 is connected to the car 100 and communicates with the air inlet 11. One end of the second sub-channel 322 extends to the bottom 312 of the main body 31, and the other end extends to the side where the main body 31 is connected to the car 100 and communicates with the air inlet 11.

[0045] It can be understood that the car 100 moves up / down along the height direction of the car 100, and the top 311 and the bottom 312 of the main body 31 are also set corresponding to the height of the car 100. When the car 100 moves up / down, the top 311 and the bottom 312 of the main body 31 will face the air flow. By extending the first sub-channel 321 and the second sub-channel 322 to the top 311 of the main body 31 and the bottom 312 of the main body 31 respectively, the air flow can be guided into the air duct by the first sub-channel 321 and the second sub-channel 322 no matter whether the car 100 is moving up or down, increasing the air delivery volume.

[0046] Of course, it is not limited to this. In other embodiments, the other end of the air guiding channel 32 only extends to the top 311. Then, when the car 100 descends, the air can enter the car 100 through the air guiding channel 32 extending to the top 311 of the main body 31. In other embodiments, the other end of the air guiding channel 32 only extends to the bottom 312. Then, when the car 100 descends, the air can enter the car 100 through the air guiding channel 32 extending to the bottom 312 of the main body 31.

[0047] Preferably, the first sub-channel 321 and the second sub-channel 322 are connected on the side close to the air inlet 11. The airflows guided by the first sub-channel 321 and the second sub-channel 322 can be collected and then jointly conveyed into the air duct, so as to improve the air supply speed.

[0048] Exemplarily, the shapes of the first sub-channel 321 and the second sub-channel 322 are preferably arc-shaped structures, which can guide the airflow more smoothly.

[0049] In one embodiment, the inside of the armrest 10 is a hollow structure to form the above-mentioned air duct. The armrest 10 is strip-shaped, and the fan 21 and the wind wheel 231 are also arranged in a strip shape, and the length extends along the length direction of the armrest 10. The cross-section of the armrest 10 is set to an L shape. In the cross-sectional state, the fan 21 and the wind wheel 231 are respectively arranged at two corners of the L shape. Specifically, the wind wheel 231 is arranged at the corner of the armrest 10 close to the air guiding device 30, and the fan 21 is arranged at the other corner. The wind wheel 231 is close to the air guiding device 30, so that the airflow introduced through the air guiding device 30 can be blown onto the wind wheel 231 to the greatest extent, thereby driving the wind wheel 231 to rotate for power generation and ensuring the maximum utilization of natural airflow.

[0050] Furthermore, the corner of the armrest 10 where the wind wheel 231 is arranged is connected to the car 100. The air inlet 11 is arranged at this corner and is connected to the opening 100a on the car 100.

[0051] In one embodiment, the air outlet 12 includes a first air outlet 121 and a second air outlet 122. Two air outlets 12 are provided to supplement fresh air into the car 100 more quickly. Among them, the first air outlet 121 is opened at the position of the armrest 10 corresponding to the air outlet direction of the fan 21, and the second air outlet 122 is opened at the position of the armrest 10 corresponding to the air outlet direction of the wind wheel 231.

[0052] In other embodiments, the air outlet 12 can also be set to only one or more than two, and the positions are correspondingly arranged on the side wall of the end corner where the fan 21 is arranged.

[0053] Further, the air outlet 12 includes a plurality of air outlet holes 123 provided on the surface of the armrest 10. The plurality of air outlet holes 123 are distributed along the length direction of the armrest 10, and the plurality of air outlet holes 123 are respectively communicated with the air duct 13 to jointly form the air outlet 12. The air is discharged from each air outlet hole 123, which can not only ensure the uniform outflow of air but also cause no discomfort to the hands of passengers.

[0054] Preferably, a filter screen 124 is provided on the armrest 10. The filter screen 124 is detachably connected to the armrest 10 and covers the air outlet 12. The filter screen 124 filters harmful substances such as impurities, dust, and bacteria in the air, preventing these substances from being transported into the car 100 and providing a cleaner and healthier air environment for passengers. A one-way filter screen is preferably used to prevent air from being drawn from the inside of the car 100 into the armrest 10 to form an internal circulation.

[0055] Exemplarily, the detachable connection can be made by means of snap connection, plug connection, screw connection, etc. The filter screen 124 is a one-way dust-proof filter screen 124 to ensure that air cannot be drawn from the inside of the car 100 into the air duct, preventing the formation of an internal circulation.

[0056] Exemplarily, both the first air outlet 121 and the second air outlet 122 are provided in the form of a plurality of air outlet holes 123. And filter screens 124 are correspondingly covered at both the first air outlet 121 and the second air outlet 122.

[0057] The working principle is as follows:

[0058] When the elevator car 100 moves upward / downward, the first auxiliary duct 321 and the second auxiliary duct 322 respectively collect the fresh air flowing upward / downward, guide the fresh air to enter the internal air duct of the armrest 10 from the air inlet 11, drive the wind wheel 231 to rotate and then drive the generator 232 to work. At the same time, after the control member 222 receives the power generation of the generator 232, it controls the battery 24 to switch to the energy storage mode, so that the electricity generated by the generator 232 charges the battery 24. The fresh air then passes through the internal air duct of the armrest 10 and enters the car 100 through the air outlet 12. When the elevator stops for a period of time (the time can be set), the control member 222 will switch to the active fresh air mode: the control member 222 controls the battery 24 to supply power to the driving member 221, and the driving member 221 is turned on to drive the fan 21 to rotate. After the fan 21 rotates, a negative pressure is generated in the air duct inside the armrest 10, and the fresh air outside the car 100 is drawn into the air duct and finally delivered to the inside of the car 100 through the air outlet to ventilate the car 100.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0060] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An elevator car fresh air system, characterized in that: include: Car (100); A handrail (10) is installed on the inner wall of the car (100); the handrail (10) is provided with an air inlet (11), an air outlet (12) and an air duct (13); the air duct (13) is arranged in the handrail (10) and communicates with the air inlet (11) and the air outlet (12); the air outlet (12) is communicated with the interior of the car (100), and the air inlet (11) is communicated with the air outside the car (100); A ventilation device (20) comprises a fan (21) and a driving component (22), wherein the fan (21) is rotatably disposed in the air duct (13), and the driving component (22) is connected to the fan (21) to drive the fan (21) to rotate; An air guide device (30) is connected to the air inlet (11) and is used to guide airflow to the air inlet (11) during the upward / downward movement of the elevator car (100).

2. The elevator car fresh air system according to claim 1, characterized in that: The driving component (22) comprises a driving member (221) and a control member (222); the driving member (221) is connected to the fan (21) and is capable of driving the fan (21) to rotate; the control member (222) is electrically connected to the driving member (221) to control the driving member (221) to be turned on / off.

3. The elevator car fresh air system according to claim 2, characterized in that: The driving component (22) further comprises a power generation component (23) and a storage battery (24); the power generation component (23) is arranged in the air duct (13) and is electrically connected to the storage battery (24); When the airflow passes through the air duct (13), the power generation component (23) can generate electricity to supply power to the storage battery (24); the control component (222) is electrically connected to the storage battery (24) to control the storage battery (24) to supply power to / cut off power to the driving component (221).

4. The elevator car fresh air system according to claim 3, characterized in that: The power generation assembly (23) comprises a wind wheel (231) and a generator (232); the wind wheel (231) is rotatably disposed in the wind duct (13) and connected to the generator (232); the generator (232) is electrically connected to the storage battery (24); When the wind wheel (231) rotates, it can drive the generator (232) to generate electricity, so as to supply power to the storage battery (24).

5. The elevator car fresh air system according to claim 1, characterized in that: The air guide device (30) is arranged on the outer wall of the car (100); an opening (100a) is provided on the side wall of the car (100), and the opening (100a) is connected to the air guide device (30) and the air inlet (11).

6. The elevator car fresh air system according to claim 1, characterized in that: The air guide device (30) comprises a body (31) and an air guide channel (32) arranged on the body (31); the body (31) is connected to the outer wall of the car (100); along the height direction of the car (100), the body (31) has a top (311) and a bottom (312); one end of the air guide channel (32) extends to the side where the body (31) is connected to the car (100) and is connected to the air inlet (11); the other end of the air guide channel (32) extends to the top (311) and / or the bottom (312).

7. The elevator car fresh air system according to claim 6, characterized in that: The air guide channel (32) comprises a first auxiliary channel (321) and a second auxiliary channel (322); one end of the first auxiliary channel (321) extends to the top (311), and the other end extends to the side where the body (31) is connected to the car (100), and is connected to the air inlet (11); one end of the second auxiliary channel (322) extends to the bottom (312), and the other end extends to the side where the body (31) is connected to the car (100), and is connected to the air inlet (11).

8. The elevator car fresh air system according to claim 7, characterized in that: The first auxiliary channel (321) and the second auxiliary channel (322) are connected at a side close to the air inlet (11).

9. The elevator car fresh air system according to claim 1, characterized in that: The air outlet (12) comprises a plurality of air outlet holes (123) arranged on the surface of the armrest (10), wherein the plurality of air outlet holes (123) are distributed along the length direction of the armrest (10) and are respectively connected to the air duct (13); A filter (124) is provided on the armrest (10); the filter (124) is detachably connected to the armrest (10) and covers the air outlet (12).

10. The elevator car fresh air system according to claim 4, characterized in that: The air outlet (12) comprises a first air outlet (121) and a second air outlet (122), wherein the first air outlet (121) is provided at a position of the armrest (10) corresponding to an air outlet direction of the fan (21), and the second air outlet (122) is provided at a position of the armrest (10) corresponding to an air outlet direction of the wind wheel (231).

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