Elevator car ventilation device capable of adjusting ventilation quantity

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator car ventilation device capable of adjusting ventilation quantity, which comprises a car, a plurality of air outlet holes a which are distributed at equal intervals front and back are arranged on the middle lower portions of the left side and the right side of the inner wall of the car, and a plurality of air outlet holes b which are distributed in a matrix are arranged on the left side and the right side of the inner wall of the car and located above the air outlet holes a. Adjusting assemblies are arranged on the left side and the right side of the inner wall of the lift car correspondingly, each adjusting assembly comprises two L-shaped fixing vertical plates which are symmetrically arranged front and back, a shielding plate is slidably connected between the two L-shaped fixing vertical plates, and the position, close to the middle of the top edge, of the outer side of the shielding plate is in threaded connection with a pressing bolt. According to the elevator car ventilation device capable of adjusting the ventilation quantity, the opening and closing states of the air outlet hole b can be flexibly adjusted through the baffle plate in the adjusting assembly, so that the air flow is controlled, passengers can adjust the ventilation intensity according to actual requirements, and the situation that passengers feel uncomfortable due to large air flow in winter or under other special conditions is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator technical field, concretely is elevator car ventilation device of adjustable ventilation volume. BACKGROUND

[0002] The elevator car is a relatively closed space, and passengers have high requirements for air quality during the process of taking the elevator. In particular, in the case of a large number of people or long-time operation of the elevator, the odor, carbon dioxide concentration and other problems in the air may affect the comfort and health of passengers. Therefore, it is necessary to increase the ventilation device in the elevator car.

[0003] The patent with publication number CN221324636U discloses an elevator car ventilation device, which comprises an elevator car and a long rack. Three first openings are equidistantly arranged in the middle of the top of the elevator car, and second openings are arranged in the lower part of both sides of the elevator car. First and second leaves are respectively connected to the inner part of the first and second openings through rotation. An n-shaped baffle is fixedly installed on the top of the elevator car above the three first openings. A first transmission component is installed on the inner side of the n-shaped baffle and is in transmission connection with the long rack. The first transmission component is in transmission connection with the three first leaves. Second transmission components are installed on both sides of the elevator car and are in transmission connection with the first transmission component. The elevator car ventilation device has an elevator operation ventilation structure. The elevator operation ventilation structure does not need to use electricity and can perform air supply and exhaust operation during the operation of the elevator, thereby effectively improving the use performance of the elevator car.

[0004] The above-mentioned prior art solves the ventilation problem during the operation of the elevator to a certain extent, and has certain energy-saving effect because it does not need to use electricity. However, it has the following disadvantages: first, the ventilation device relies on a complex transmission structure, and a large number of gear meshing transmission structures are prone to wear, which shortens the service life of the device and increases the frequency of maintenance and replacement; second, the existing ventilation device does not have a forced ventilation structure, which makes it impossible to perform air exchange operation when the elevator stays at a certain floor for a long time, thereby making it difficult to guarantee the air quality inside the car; in addition, the ventilation volume of the existing device cannot be adjusted, and the output airflow cannot be flexibly controlled according to actual needs. In winter or other special circumstances, the large airflow may make passengers feel uncomfortable, reducing the riding experience. In view of this, we propose an elevator car ventilation device with adjustable ventilation volume. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an elevator car ventilation device with adjustable ventilation volume to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The elevator car ventilation device with adjustable ventilation volume comprises a car, a plurality of air outlet holes a are arranged on the lower middle part of the left and right sides of the inner wall of the car and are arranged in front and back equidistantly, which are used for outputting airflow to ensure air circulation in the car and maintain the internal air quality, a plurality of air outlet holes b are arranged on the left and right sides of the inner wall of the car and are arranged in a matrix above the air outlet holes a, which are used for assisting the air outlet holes a to further discharge airflow and enhance the ventilation effect;

[0008] Adjusting assemblies are arranged on the left and right sides of the inner wall of the car and are used for adjusting the opening or closing state of the air outlet holes b to control the ventilation volume, so that the airflow can be adjusted according to the requirements, the adjusting assembly comprises two L-shaped fixed vertical plates arranged in front and back symmetry, which are used for fixing the shielding plate and providing sliding support, a shielding plate is slidably connected between the two L-shaped fixed vertical plates, the shielding plate can be shielded or opened by sliding the upper and lower positions of the shielding plate, a pressing bolt is threadedly connected to the outer side of the shielding plate and is close to the middle part of the top edge, the threaded end of the pressing bolt abuts against the inner wall of the car, and the shielding plate can be fixed at the required position by rotating the pressing bolt to prevent it from sliding and deviating during use.

[0009] A U-shaped air guide pipe is arranged on the outer side of the car and is used for connecting the follow-up ventilation assembly and the active ventilation assembly and transmitting the generated airflow to the air outlet holes a and the air outlet holes b, the follow-up ventilation assembly is arranged on the top of the U-shaped air guide pipe and is close to the left and right sides, the follow-up ventilation assembly utilizes the natural airflow generated during the operation of the elevator to generate the ventilation effect, and the active ventilation assembly is arranged on the middle part of the top of the U-shaped air guide pipe, which is used for actively generating airflow by the fan when the elevator is stationary to improve the ventilation efficiency.

[0010] Air outlets are arranged on the left and right sides of the inner side of the U-shaped air guide pipe and are located at the bottom, and the air outlet holes a and the air outlet holes b on the same side are in communication with the air outlets, the air outlets are used for guiding the airflow generated by the follow-up ventilation assembly and the active ventilation assembly to the air outlet holes a and the air outlet holes b to realize the air exchange in the car.

[0011] Preferably, one side of the L-shaped fixed vertical plate is fixedly connected to the inner wall of the car, and a strip-shaped supporting plate is connected to the bottom of the two L-shaped fixed vertical plates, the strip-shaped supporting plate is located above the air outlet holes a and below the lowermost air outlet holes b, so that the air outlet holes a are not blocked and the airflow can be outputted from the air outlet holes a at all times, thereby ensuring that the car is always ventilated.

[0012] Preferably, one side of the shielding plate is fitted to the side of the inner wall of the car, when the bottom of the shielding plate is fitted to the top of the strip-shaped supporting plate, the air outlet holes b on the same side are closed by the shielding plate, so that the air discharge from the air outlet holes b is stopped and the ventilation volume is adjusted.

[0013] Preferably, the height of the L-shaped fixed vertical plate is twice the height of the shielding plate, providing a larger sliding range, and the front and rear sides of the shielding plate are provided with sliding side strips which are slidingly connected to the inner side of the L-shaped fixed vertical plate, facilitating the up and down adjustment of the shielding plate and ensuring the stability of the shielding plate.

[0014] Preferably, the follow-up ventilation assembly comprises a first rectangular vertical pipe provided through the top of the U-shaped air guide pipe, for guiding the follow-up airflow into the U-shaped air guide pipe, and a first dust screen is arranged at the top of the inside of the first rectangular vertical pipe, for filtering dust and impurities in the air, and the opposite sides of the first rectangular vertical pipes of the two follow-up ventilation assemblies are each provided with an air inlet side opening, for collecting airflow during the operation of the elevator.

[0015] The opposite sides of the two first rectangular vertical pipes are each provided with an air inlet cover, for collecting external airflow and guiding it to the air inlet side opening, and the air inlet side opening is located in the air inlet cover, when the elevator is descending, the air inlet cover collects airflow into the air inlet side opening, thereby generating airflow in the first rectangular vertical pipe, and a second dust screen is arranged in the air inlet side opening, for filtering impurities in the airflow.

[0016] Preferably, a flow guide inclined plate is arranged on the inner wall of the first rectangular vertical pipe and away from one side of the air inlet side opening, and the flow guide inclined plate is close to the bottom of the first rectangular vertical pipe, when the elevator is ascending, the airflow in the first rectangular vertical pipe is downward and is guided by the flow guide inclined plate to flow into the U-shaped air guide pipe.

[0017] Preferably, a semicircular flow guide plate is arranged on the inner wall of the first rectangular vertical pipe and at the top of the air inlet side opening, the bottom of the semicircular flow guide plate and the bottom of the flow guide inclined plate both extend into the U-shaped air guide pipe, the airflow entering the first rectangular vertical pipe from the air inlet side opening can generate downward airflow and enter the U-shaped air guide pipe under the guidance of the semicircular flow guide plate, and the semicircular flow guide plate and the flow guide inclined plate cooperate to enable the input of airflow into the U-shaped air guide pipe when the elevator is ascending or descending.

[0018] Preferably, the active ventilation assembly comprises a second rectangular vertical pipe, a frame-shaped bottom plate is arranged at the bottom of the outer wall of the second rectangular vertical pipe, a plurality of mounting holes b are arranged at the top of the frame-shaped bottom plate, the second bolts are connected to the mounting holes b, an air inlet hole is arranged at the middle of the top of the U-shaped air guide pipe, a frame-shaped mounting table is arranged at the air inlet hole, and the threaded ends of the second bolts are threadedly connected to the top of the frame-shaped mounting table, facilitating the disassembly and assembly of the active ventilation assembly.

[0019] Preferably, a third dustproof net is provided at the top of the interior of the second rectangular vertical tube to filter the airflow entering the fan and protect the fan. A mounting plate is provided inside the second rectangular vertical tube near the top for mounting the fan. A ventilation opening is provided at the top of the mounting plate, and the fan is provided at the bottom of the mounting plate. The fan is connected to an external power supply and controller and generates downward airflow. Multiple mounting holes a are provided on the mounting base of the fan. A first bolt is connected to each mounting hole a. The threaded end of the first bolt is threaded to the bottom of the mounting plate to facilitate the assembly and disassembly of the fan.

[0020] Preferably, rotating baffles are rotatably connected to both the front and rear sides of the inner wall of the U-shaped air guide tube and near the bottom of the opposite sides of the two first rectangular vertical tubes. The top of the inner wall of the U-shaped air guide tube is provided with two strip-shaped limiting plates arranged symmetrically to limit the rotation angle of the rotating baffles. The top of the opposite sides of the two rotating baffles abuts against the opposite sides of the two strip-shaped limiting plates. When the fan is working, the airflow generated blows the two rotating baffles, causing the left rotating baffle to rotate to the upper left and the right rotating baffle to rotate to the upper right, so that the airflow can flow to the two air outlets. When the fan is not working, the rotating baffles can be vertical to prevent the airflow generated by the follow-up ventilation components from flowing to the active ventilation components, ensuring that the airflow generated by the two follow-up ventilation components is output from the two air outlets respectively.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This adjustable ventilation volume elevator car ventilation device, through the combined design of active ventilation components and follow-up ventilation components, passively guides natural airflow using the follow-up ventilation components when the elevator is running, thereby achieving energy-saving ventilation effect; when the elevator is stationary or the airflow is insufficient, the fan in the active ventilation components generates active airflow, effectively solving the problem of poor air circulation inside the car due to the elevator staying for a long time in the existing technology, and greatly improving the air quality inside the car.

[0023] 2. This adjustable ventilation system for elevator cars can flexibly adjust the opening and closing state of the air outlet b by adjusting the baffle in the component, thereby controlling the airflow. Passengers can adjust the ventilation intensity according to their actual needs, avoiding discomfort caused by large airflow in winter or other special circumstances. This effectively solves the problem of non-adjustable ventilation in the background technology and improves the user experience.

[0024] 3. The adjustable ventilation volume elevator car ventilation device is equipped with multiple layers of dustproof screens at each air inlet of the follow-up ventilation component and the active ventilation component. This effectively filters dust and impurities in the air, prevents the internal structure from degrading or being damaged due to dust accumulation, thereby extending the service life of the device and reducing the frequency of maintenance.

[0025] 4、The adjustable elevator car ventilation device, the guide inclined plate and the semicircular guide plate in the follow-up ventilation assembly are used in cooperation, can guide the air flow when the elevator runs up and down into the air guide pipe respectively, realizes the effective utilization of the air flow, and can provide uniform air flow into the car whether the elevator is in up or down state. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the whole first visual angle structure schematic diagram of the utility model;

[0027] Figure 2 It is the whole second visual angle structure schematic diagram of the utility model;

[0028] Figure 3 It is the assembly structure schematic diagram of the car and the adjusting assembly in the utility model;

[0029] Figure 4 It is the assembly structure schematic diagram of the U-shaped air guide pipe, the follow-up ventilation assembly and the active ventilation assembly in the utility model;

[0030] Figure 5 It is the cross section structure schematic diagram of the follow-up ventilation assembly in the utility model;

[0031] Figure 6 It is the assembly structure schematic diagram of the U-shaped air guide pipe and the active ventilation assembly in the utility model;

[0032] Figure 7 It is the partial structure schematic diagram of the active ventilation assembly in the utility model;

[0033] In the drawing: 1, car;10, air outlet a;11, air outlet b;2, U-shaped air guide pipe;20, air inlet;21, frame-shaped mounting table;22, air outlet;3, follow-up ventilation assembly;30, first rectangular vertical pipe;300, air inlet side opening;31, air inlet cover;32, guide inclined plate;33, semicircular guide plate;34, first dust screen;35, second dust screen;4, active ventilation assembly;40, second rectangular vertical pipe;41, mounting plate;410, ventilation opening;42, fan;420, mounting hole a;43, first bolt;44, third dust screen;45, frame-shaped bottom plate;450, mounting hole b;46, second bolt;5, adjusting assembly;50, L-shaped fixed vertical plate;51, baffle;510, sliding side strip;52, compression bolt;53, strip-shaped supporting plate;6, rotating baffle;7, strip-shaped limiting plate. DETAILED DESCRIPTION

[0034] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0035] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0036] Please refer to Figures 1-7 The utility model provides a technical scheme:

[0037] The elevator car ventilation device with adjustable ventilation volume comprises a car 1, a plurality of air outlet holes a10 that are arranged equidistantly in front and back and are arranged on the lower part of the left and right sides of the inner wall of the car 1 are formed, air flow is outputted, air circulation in the car 1 is ensured, and internal air quality is maintained, a plurality of air outlet holes b11 that are arranged in a matrix and are arranged on the left and right sides of the inner wall of the car 1 and are located above the air outlet holes a10 are formed, air flow is further discharged by the air outlet holes b11 in aid of the air outlet holes a10, and the ventilation effect is enhanced;

[0038] Adjusting assemblies 5 are arranged on the left and right sides of the inner wall of the car 1, the opening or closing state of the air outlet holes b11 is adjusted, the ventilation volume is controlled, the function of adjusting air flow according to requirements is realized, the adjusting assembly 5 comprises two L-shaped fixed vertical plates 50 that are arranged symmetrically in front and back, the L-shaped fixed vertical plates 50 are used for fixing a shielding plate 51 and providing sliding support, the shielding plate 51 is slidably connected between the two L-shaped fixed vertical plates 50, the shielding or opening of the air outlet holes b11 can be realized by sliding the up-down position of the shielding plate 51, a pressing bolt 52 is threadedly connected to the position of the outer side of the shielding plate 51 and close to the middle part of the top edge, the threaded end of the pressing bolt 52 abuts against the inner wall of the car 1, the shielding plate 51 can be fixed at the required position by rotating the pressing bolt 52, and sliding deviation of the shielding plate 51 in the use process is prevented;

[0039] The outer side of the car 1 is provided with a U-shaped air duct 2 for connecting the follow-up ventilation assembly 3 and the active ventilation assembly 4, and transmitting the generated air flow to the air outlet holes a10 and b11, the top of the U-shaped air duct 2 and the positions close to the left and right sides are provided with follow-up ventilation assemblies 3, which utilize the natural air flow generated during elevator operation to produce ventilation effect, the middle of the top of the U-shaped air duct 2 is provided with an active ventilation assembly 4 for actively generating air flow by the fan 42 when the elevator is stationary, improving ventilation efficiency;

[0040] The left and right sides of the inner side of the U-shaped air duct 2 and the bottom are provided with air outlets 22, and the same side of the plurality of air outlet holes a10 and the plurality of air outlet holes b11 are in communication with the air outlets 22, the air outlets 22 are used to guide the air flow generated by the follow-up ventilation assembly 3 and the active ventilation assembly 4 to the air outlet holes a10 and b11, realizing air exchange in the car 1.

[0041] In this embodiment, one side of the L-shaped fixed vertical plate 50 is fixedly connected to the inner wall of the car 1, and the bottom of the two L-shaped fixed vertical plates 50 is commonly connected with a strip-shaped supporting plate 53, the strip-shaped supporting plate 53 is located above the air outlet hole a10, and the strip-shaped supporting plate 53 is located below the lowermost air outlet hole b11, avoiding the air outlet hole a10 being blocked, ensuring that the plurality of air outlet holes a10 can always have air flow output, thereby ensuring that the car 1 is always ventilated.

[0042] Specifically, one side of the shielding plate 51 is fitted with the side surface of the inner wall of the car 1, when the bottom of the shielding plate 51 is fitted with the top of the strip-shaped supporting plate 53, the plurality of air outlet holes b11 on the same side are closed by the shielding plate 51, thereby stopping the exhaust from the air outlet hole b11, adjusting the ventilation volume.

[0043] Further, the height of the L-shaped fixed vertical plate 50 is twice the height of the shielding plate 51, providing a larger sliding range, the front and rear sides of the shielding plate 51 are provided with sliding side strips 510, which are slidingly connected to the inner side of the L-shaped fixed vertical plate 50, facilitating the up and down adjustment of the shielding plate 51, and ensuring the stability of the shielding plate 51.

[0044] Further, the follow-up ventilation assembly 3 includes a first rectangular vertical pipe 30 penetratingly arranged at the top of the U-shaped air duct 2, for guiding the follow-up air flow into the U-shaped air duct 2, the top of the inside of the first rectangular vertical pipe 30 is provided with a first dust screen 34 for filtering dust and impurities in the air, and the opposite sides of the first rectangular vertical pipes 30 of the two follow-up ventilation assemblies 3 are provided with air inlet side openings 300 for collecting air flow during elevator operation;

[0045] The opposite sides of the two first rectangular vertical pipes 30 are respectively provided with air inlet covers 31 for collecting external air flow and guiding the air flow to air inlet side openings 300 located in the air inlet covers 31, when the elevator is descending, the air inlet covers 31 collect the air flow into the air inlet side openings 300, so that the air flow is generated in the first rectangular vertical pipes 30, and the air inlet side openings 300 are provided with second dustproof nets 35 for filtering impurities in the air flow.

[0046] Further, the inner wall of the first rectangular vertical pipe 30 and the side away from the air inlet side opening 300 are provided with a flow guide inclined plate 32 close to the bottom of the first rectangular vertical pipe 30, when the elevator is ascending, the downward air flow generated in the first rectangular vertical pipe 30 is guided by the flow guide inclined plate 32 to flow into the U-shaped air guide pipe 2.

[0047] Further, the inner wall of the first rectangular vertical pipe 30 and the position at the top of the air inlet side opening 300 are provided with a semicircular flow guide plate 33, the bottom of the semicircular flow guide plate 33 and the bottom of the flow guide inclined plate 32 both extend into the U-shaped air guide pipe 2, the air flow entering the first rectangular vertical pipe 30 from the air inlet side opening 300 can generate downward air flow and enter the U-shaped air guide pipe 2 under the guidance of the semicircular flow guide plate 33, the semicircular flow guide plate 33 and the flow guide inclined plate 32 work together to input air flow into the U-shaped air guide pipe 2 when the elevator is ascending or descending.

[0048] Further, the active ventilation assembly 4 comprises a second rectangular vertical pipe 40, the bottom of the outer wall of the second rectangular vertical pipe 40 is provided with a frame-shaped bottom plate 45, a plurality of mounting holes b450 are formed in the top of the frame-shaped bottom plate 45, the mounting holes b450 are connected with second bolts 46, the top of the U-shaped air guide pipe 2 is provided with an air inlet hole 20, the air inlet hole 20 is provided with a frame-shaped mounting table 21, the threaded end of the second bolt 46 is threadedly connected to the top of the frame-shaped mounting table 21, so as to facilitate the disassembly and assembly of the active ventilation assembly 4.

[0049] Further, the top of the inside of the second rectangular vertical pipe 40 is provided with a third dustproof net 44 for filtering the air flow entering the fan 42 to protect the fan 42, the second rectangular vertical pipe 40 is provided with a mounting plate 41 close to the top for mounting the fan 42, the top of the mounting plate 41 is provided with a ventilation opening 410, the bottom of the mounting plate 41 is provided with the fan 42, the fan 42 is connected with a power supply and a controller, the fan 42 generates downward air flow, a plurality of mounting holes a420 are formed in the mounting seat of the fan 42, the mounting holes a420 are connected with first bolts 43, the threaded end of the first bolt 43 is threadedly connected to the bottom of the mounting plate 41, so as to facilitate the disassembly and assembly of the fan 42.

[0050] Further, the U-shaped air guide pipe 2 is rotatably connected with a rotating baffle 6 between the front and back sides of the inner wall of the U-shaped air guide pipe 2 and close to the bottom of the opposite side of the two first rectangular vertical pipes 30. The top of the inner wall of the U-shaped air guide pipe 2 is provided with two strip-shaped limiting plates 7 arranged symmetrically left and right, for limiting the rotation angle of the rotating baffle 6. The top of the opposite side of the two rotating baffles 6 is respectively abutted with the opposite side of the two strip-shaped limiting plates 7. When the fan 42 works, the airflow generated blows the two rotating baffles 6, so that the left rotating baffle 6 rotates upward to the left and the right rotating baffle 6 rotates upward to the right, so that the airflow can flow to the two air outlets 22. When the fan 42 does not work, the rotating baffle 6 can be vertical, avoiding the airflow generated by the driven ventilation assembly 3 from flowing to the active ventilation assembly 4, and ensuring that the airflow generated by the two driven ventilation assemblies 3 is respectively output from the two air outlets 22.

[0051] In use, the adjustable ventilation volume elevator car ventilation device of the embodiment utilizes the airflow generated during the upward or downward movement of the elevator. When the elevator moves downward, the air inlet cover 31 collects the airflow into the air inlet side port 300, and the second dust screen 35 filters the impurities in the airflow. The airflow entering the first rectangular vertical pipe 30 from the air inlet side port 300 can generate downward airflow under the guidance of the semicircular flow guide plate 33 and enter the U-shaped air guide pipe 2. When the elevator moves upward, the downward airflow in the first rectangular vertical pipe 30 is guided by the flow guide inclined plate 32 to flow into the U-shaped air guide pipe 2. The flow guide inclined plate 32 and the semicircular flow guide plate 33 reasonably guide the airflow according to the running direction of the elevator, so that the airflow smoothly enters the inside of the U-shaped air guide pipe 2 and is further conveyed to the air outlet holes a10 and b11 in the car 1 through the air outlets 22, realizing the circulation and renewal of the air in the car 1.

[0052] When the elevator is in a stationary state, the driven ventilation assembly 3 cannot rely on the airflow generated by the running of the elevator. At this time, the active ventilation assembly 4 starts to work. The fan 42 in the active ventilation assembly 4 starts to work, and the external air is introduced into the system through the ventilation port 410. After being filtered by the third dust screen 44, the airflow enters the U-shaped air guide pipe 2. The airflow blows the two rotating baffles 6, so that the left rotating baffle 6 rotates upward to the left and the right rotating baffle 6 rotates upward to the right, so that the airflow can flow to the two air outlets 22. Finally, the airflow is conveyed to the air outlet holes a10 and b11 in the car 1 through the air outlets 22, maintaining the air circulation, effectively discharging the odor and carbon dioxide in the car 1, and ensuring the air quality.

[0053] For the adjustment of the ventilation volume, if the air flow is to be reduced or part of the air flow is to be closed, the adjustment assembly 5 can be adjusted, the shielding plate 51 can be adjusted up and down, so as to partially or completely shield the air outlet b11, reduce or stop the air flow from the air outlet b11, when the shielding plate 51 is adjusted to the required position, it can be fixed by rotating the pressing bolt 52, to prevent the shielding plate 51 from sliding and deviating due to vibration or other factors;

[0054] Through the cooperation of the follow-up ventilation assembly 3 and the active ventilation assembly 4, the device can not only automatically adapt to the elevator running state to realize passive ventilation for energy saving, but also can keep the air flow through in the static state through active ventilation, and the user can flexibly adjust the ventilation volume according to the needs, to ensure that the air in the car is always fresh and comfortable, and the passengers can be provided with ideal ventilation effect whether the elevator is in running or static state.

[0055] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, the above examples and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. Elevator car ventilation arrangement with adjustable ventilation volume, comprising a car (1), characterized in that: The lower middle part of the left and right sides of the inner wall of the car (1) is provided with a plurality of air outlet holes a (10) arranged equidistantly in front and back, the left and right sides of the inner wall of the car (1) and above the air outlet holes a (10) are provided with a plurality of air outlet holes b (11) arranged in matrix, the left and right sides of the inner wall of the car (1) are provided with adjusting assemblies (5), the adjusting assembly (5) comprises two L-shaped fixed vertical plates (50) arranged symmetrically in front and back, the two L-shaped fixed vertical plates (50) are slidably connected with a shielding plate (51), the outer side of the shielding plate (51) and near the middle part of the top edge are threadedly connected with a compression bolt (52), the threaded end of the compression bolt (52) abuts against the inner wall of the car (1), the outer side of the car (1) is provided with a U-shaped air guide pipe (2), the top of the U-shaped air guide pipe (2) and near the left and right sides are provided with follow-up ventilation assemblies (3), the middle part of the top of the U-shaped air guide pipe (2) is provided with a driven ventilation assembly (4), the left and right sides of the inner side of the U-shaped air guide pipe (2) and at the bottom are provided with air outlets (22), and the same side of a plurality of air outlet holes a (10) and a plurality of air outlet holes b (11) are in communication with the air outlets (22).

2. The adjustable volume elevator car ventilation device of claim 1, wherein: One side of the L-shaped fixed vertical plate (50) is fixedly connected to the inner wall of the car (1), and the bottoms of the two L-shaped fixed vertical plates (50) are commonly connected with a strip-shaped supporting plate (53), the strip-shaped supporting plate (53) is located above the air outlet holes a (10), and the strip-shaped supporting plate (53) is located below the lowermost air outlet holes b (11).

3. The adjustable volume elevator car ventilation device of claim 2, wherein: One side of the shielding plate (51) is attached to the side of the inner wall of the car (1), when the bottom of the shielding plate (51) is attached to the top of the strip-shaped supporting plate (53), the same side of a plurality of air outlet holes b (11) are closed by the shielding plate (51).

4. The adjustable volume elevator car ventilation device of claim 1, wherein: The height of the L-shaped fixed vertical plate (50) is twice the height of the shielding plate (51), and the front and back sides of the shielding plate (51) are provided with sliding side strips (510) which are slidably connected to the inner side of the L-shaped fixed vertical plate (50).

5. The adjustable volume elevator car ventilation device of claim 1, wherein: The follow-up ventilation assembly (3) comprises a first rectangular vertical pipe (30) penetratingly arranged at the top of the U-shaped air guide pipe (2), the top of the inside of the first rectangular vertical pipe (30) is provided with a first dust screen (34), the opposite sides of the first rectangular vertical pipes (30) of the two follow-up ventilation assemblies (3) are provided with air inlet side openings (300), the opposite sides of the two first rectangular vertical pipes (30) are provided with air inlet covers (31), the air inlet side openings (300) are located in the air inlet covers (31), and the air inlet side openings (300) are provided with second dust screens (35).

6. The adjustable volume elevator car ventilation device of claim 5, wherein: The inner wall of the first rectangular vertical pipe (30) and away from one side of the air inlet side opening (300) is provided with a flow guide inclined plate (32), and the flow guide inclined plate (32) is close to the bottom of the first rectangular vertical pipe (30).

7. The adjustable volume elevator car ventilation device of claim 6, wherein: The inner wall of the first rectangular vertical pipe (30) is provided with a semicircular guide plate (33) at the top of the air inlet side port (300), and the bottom of the semicircular guide plate (33) and the bottom of the guide inclined plate (32) extend into the U-shaped air guide pipe (2).

8. The adjustable volume elevator car ventilation device of claim 1, wherein: The active ventilation assembly (4) comprises a second rectangular vertical pipe (40), the bottom of the outer wall of the second rectangular vertical pipe (40) is provided with a frame-shaped bottom plate (45), the top of the frame-shaped bottom plate (45) is provided with a plurality of mounting holes b (450), the second bolt (46) is connected to the mounting hole b (450), the top of the U-shaped air guide pipe (2) is provided with an air inlet hole (20), the frame-shaped mounting table (21) is arranged at the air inlet hole (20), and the threaded end of the second bolt (46) is threadedly connected to the top of the frame-shaped mounting table (21).

9. The adjustable volume elevator car ventilation device of claim 8, wherein: The top of the second rectangular vertical pipe (40) is provided with a third dustproof net (44), the second rectangular vertical pipe (40) is provided with a mounting plate (41) near the top, the top of the mounting plate (41) is provided with a ventilation opening (410), the bottom of the mounting plate (41) is provided with a fan (42), a plurality of mounting holes a (420) are formed in the mounting seat of the fan (42), the first bolt (43) is connected to the mounting hole a (420), and the threaded end of the first bolt (43) is threadedly connected to the bottom of the mounting plate (41).

10. The adjustable volume elevator car ventilation device of claim 5, wherein: The U-shaped air guide pipe (2) is provided with a rotating baffle (6) between the front and rear sides of the inner wall and close to the bottom of the opposite side of the two first rectangular vertical pipes (30), the top of the inner wall of the U-shaped air guide pipe (2) is provided with two strip-shaped limiting plates (7) arranged in a left-right symmetrical manner, and the top of the opposite side of the two rotating baffles (6) is respectively in contact with the opposite side of the two strip-shaped limiting plates (7).

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