Automatic ventilation device for elevator

Abstract

An automatic ventilation device for an elevator, comprising: an elevator car (2) and a fan (3), the elevator car (2) being movably arranged in a hoistway (1) up and down. An air inlet (21) is formed in the lower part of the elevator car (2), and an exhaust outlet (22) is formed in the top of the elevator car (2), the fan (3) being arranged at the exhaust outlet (22). The fan (3) is used for exhausting air in the elevator car (2) from bottom to top, the fan (3) being an exhaust fan. When the fan (3) runs, external air enters the elevator car (2) via the air inlet (21) and then is exhausted and discharged by the fan (3) via the exhaust outlet (22) at the top. In this case, an airflow in the elevator car (2) will flow upwards from bottom to top, and airflows exhaled by passengers will also flow upwards. Therefore, foul air exhaled by the passengers will be easily exhausted by the fan (3) and will not flow horizontally, thereby effectively reducing the probability of a virus spreading and diffusing in the elevator car (2), such that the passengers are less prone to be infected by polluted air.

Description

Automatic ventilation device for cabin elevator Technical Field

[0001] The utility model relates to the field of elevator ventilation, in particular to an automatic ventilation device for a box elevator. Background Art

[0002] The elevator car is a common place where people gather in large numbers. During peak hours, the car is very crowded with people jostling each other. Therefore, in order to ensure the ventilation of the car, the elevator is equipped with a ventilation structure.

[0003] The ventilation structure used in the existing box elevator is to configure a 25W~50W, 40m3 / h~80m3 / h fan on the top of the car. The fan will blow air downward into the car, and the air exhaled by the passengers in the car is hot air and will flow upward. Therefore, when the air exhaled by the passengers rises, it will be suppressed by the downward air flow of the fan, resulting in crossflow and turbulence. In this case, passengers will easily inhale the air exhaled by others. If the air exhaled by someone carries a virus, it will cause the virus to spread rapidly in the car, increasing the chance of virus transmission and making passengers vulnerable to polluted air.

[0004] Although some patent solutions disclose a ventilation method in which an exhaust fan is installed on the car to draw air upward, in this type of solution, the fan needs to work continuously when the elevator moves up and down. Therefore, this method will result in relatively high energy consumption of the fan. In addition, the continuous operation of the fan will also produce continuous noise, affecting the elevator riding experience. Therefore, optimization and improvement are needed.

[0005] Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one purpose of the present invention is to provide an automatic ventilation device for a cabin elevator.

[0007] The technical solution of the present utility model is as follows: An automatic ventilation device for a box-type elevator, characterized in that it includes: a car and a fan, the car is arranged in a shaft so as to be movable up and down, an air inlet is provided at the bottom of the car, and an air outlet is provided at the top, the fan is arranged at the air outlet, and the fan is used to draw air in the car from bottom to top.

[0008] Furthermore, the air inlet is arranged in the bottom area of ​​the side wall of the car and is not higher than 500 mm of the bottom wall of the car.

[0009] Furthermore, the fan is integrated with an air conditioner and a purifier, the air outlet of the fan is provided with an air supply pipe, the top of the car is provided with a avoidance opening, the air supply pipe extends downward into the car through the avoidance opening, and the pipe mouth of the air supply pipe forms the air inlet of the car.

[0010] Furthermore, it also includes a wind-cutting baffle, the air inlet is arranged in the bottom area of ​​the side wall of the car, the air inlet includes an upper air inlet and a lower air inlet, the wind-cutting baffle is a V-shaped baffle, the V-shaped corner of the wind-cutting baffle is arranged between the upper air inlet and the lower air inlet and can be freely rotatably installed on the side wall of the car, and the wind-cutting baffle is used to rotate upward to cover the upper air inlet or rotate downward to cover the lower air inlet.

[0011] Furthermore, a rotating shaft is fixedly provided at the V-shaped corner of the wind-cutting baffle, a mounting seat is provided on the side wall of the car, an axis hole is provided on the mounting seat, and the rotating shaft is pivotally engaged with the axis hole.

[0012] Furthermore, the fan is a dual-purpose fan, which is arranged outside the car. The fan includes an exhaust duct, a lower shell, an upper shell, a motor and a wind wheel. The exhaust duct is arranged at the exhaust port, and the lower shell is connected to the exhaust duct. The lower shell is a conical shell that continuously expands upward. The upper shell is detachably arranged above the lower shell and is spaced apart from the lower shell to define a 360-degree annular air outlet. The circumferential edge of the upper shell is provided with a conical flange that continuously expands downward; the motor is provided above the upper shell, and the wind wheel is provided between the upper shell and the lower shell, and the motor is connected to the wind wheel.

[0013] Furthermore, the upper shell and the lower shell are detachably connected via a screw and nut.

[0014] Furthermore, a ventilation hole is provided on the shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This device is equipped with an air inlet at the bottom of the car and an air outlet at the top. The fan is an exhaust fan. When the fan is working, the outside air will enter the car through the air inlet, and then be extracted and discharged by the fan through the air outlet at the top. In this case, the air flow in the car flows from bottom to top. In addition, the air flow exhaled by the passengers will also flow upward. Therefore, the foul air exhaled by the passengers will be easily extracted by the fan and will not flow horizontally. This effectively reduces the chance of the virus spreading in the car and makes passengers less vulnerable to polluted air.

[0017] 2. An air inlet and a V-shaped wind baffle are provided at the bottom of the side wall of the car. The fan used is a dual-purpose fan. Through the cooperation of the V-shaped wind baffle and the dual-purpose fan, the airflow from bottom to top can be realized when the car is moving, and the airflow from bottom to top can be realized when the car is parked on the floor. Active exhaust ventilation by the fan can be achieved. Therefore, the fan does not need to work all the time, which can reduce the fan's energy consumption and noise.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0020] FIG1 is a schematic diagram of embodiment 1 of the present utility model;

[0021] FIG2 is a schematic diagram of Example 2 of the present utility model;

[0022] FIG3 is a schematic diagram of Example 3 of the present utility model;

[0023] FIG4 is a schematic diagram of the V-shaped wind shield in Example 3 of the present invention rotating downward;

[0024] FIG5 is a schematic diagram of the V-shaped wind baffle rotating upward in Example 3 of the present utility model;

[0025] FIG6 is a schematic diagram of a blower in Example 3 of the present invention;

[0026] FIG7 is a top view of the fan in Example 3 of the present invention.

[0027] Reference numerals:

[0028] 1. Well; 11. Ventilation hole;

[0029] 2. Car; 21. Air inlet; 211. Upper air inlet; 212. Lower air inlet; 22. Exhaust vent;

[0030] 3. Fan; 31. Exhaust pipe; 32. Lower housing; 33. Upper housing; 34. Flanged edge; 35. Motor; 36. Wind wheel; 37. Screw; 38. Annular air outlet;

[0031] 4. Air conditioning;

[0032] 5. Purifier;

[0033] 6. Air supply pipe;

[0034] 7. Wind deflector; 71. Upper plate; 72. Lower plate; 73. Rotation axis. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0036] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In this utility model, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0038] In the description of this utility model, "first feature" or "second feature" may include one or more of these features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of these features.

[0039] Specifically, the ventilation structure used in the box elevators in the existing technology is to configure a 25W~50W, 40m3 / h~80m3 / h fan on the top of the car. The fan will blow air downward into the car, and the airflow exhaled by the passengers in the car is hot air and will flow upward. Therefore, when the airflow exhaled by the passengers rises, it will be suppressed by the downward airflow of the fan, resulting in crossflow and turbulence. In this case, passengers will easily inhale the airflow exhaled by others, which will cause the virus to spread rapidly in the car, increasing the chance of virus transmission and making passengers vulnerable to polluted air.

[0040] In view of this, the inventors designed an automatic ventilation device for a cabin elevator as shown in Figures 1 to 7, comprising: a car 2 and a fan 3. The car 2 is arranged in a shaft 1 so as to be movable up and down. An air inlet 21 is provided at the bottom of the car 2 and an air outlet 22 is provided at the top. The fan 3 is arranged at the air outlet 22, and the fan 3 is used to extract air in the car 2 from bottom to top.

[0041] Compared with the prior art, the present device is provided with an air inlet 21 at the bottom of the car 2 and an air outlet 22 at the top. The fan 3 is an exhaust fan 3. When the fan 3 is working, the outside air will enter the car 2 through the air inlet 21, and then be extracted and discharged by the fan 3 through the air outlet 22 at the top. In this case, the air flow in the car 2 flows from bottom to top, and the air flow exhaled by the passengers will also flow upward. Therefore, the foul air exhaled by the passengers will be easily extracted by the fan 3 and will not flow horizontally, which effectively reduces the chance of the virus spreading in the car 2 and makes passengers less vulnerable to polluted air.

[0042] In practical applications, this device can have many structural forms, and several specific examples are given below.

[0043] Example 1

[0044] As shown in Figure 1, in Example 1, considering that the bottom wall of the car 2 is often stepped on by people and is dusty and dirty, the air inlet 21 is arranged at the bottom area of ​​the side wall of the car 2 (including the left wall, the right wall and the rear wall). In order not to affect the flow of air from bottom to top, the air inlet 21 is not higher than the bottom wall of the car 2 by about 500mm. The air inlet 21 is composed of multiple small openings to facilitate the entry of airflow, and a protective net can be set at the air inlet 21 to prevent dust and insects.

[0045] Example 2

[0046] As shown in Figure 2, in Example 2, the air conditioner 4 and the purifier 5 are integrated on the fan 3. The air conditioner 4 is used to adjust the temperature of the blowing air flow of the fan 3, and the purifier 5 is used to disinfect and purify the blowing air flow of the fan 3. The air outlet of the fan 3 is provided with an air supply pipe 6, and the top of the car 2 is provided with a avoidance opening. The air supply pipe 6 extends downward into the car 2 through the avoidance opening. The pipe mouth of the air supply pipe 6 forms the air inlet 21 of the car 2. The height of the air inlet 21 to the bottom wall of the car 2 needs to be no more than 500 mm.

[0047] In embodiment 2, the elevator car 2 does not need to be provided with an air inlet 21 , and the air inlet 21 is formed by the pipe opening of the air supply pipe 6 , thereby enabling internal circulation of the air flow in the car 2 .

[0048] Example 3

[0049] In the above two embodiments, the fan 3 needs to work all the time to maintain the upward flow of the air in the car 2. The energy consumption and noise of the fan 3 are relatively large. Therefore, in embodiment 3, optimization and improvement are carried out.

[0050] As shown in Figures 3 to 7, the device also includes a wind-cutting baffle 7. The air inlet 21 is arranged at the bottom area of ​​the side wall of the car 2. The air inlet 21 includes an upper air inlet 211 and a lower air inlet 212. The wind-cutting baffle 7 is a V-shaped baffle. The V-shaped corner of the wind-cutting baffle 7 is arranged between the upper air inlet 211 and the lower air inlet 212 and can be freely rotatably installed on the side wall of the car 2. The wind-cutting baffle 7 is used to rotate upward to cover the upper air inlet 211 or rotate downward to cover the lower air inlet 212.

[0051] In actual application, a rotating shaft 73 is fixed at the V-shaped corner of the wind-cutting baffle 7, a mounting seat is provided on the side wall of the car 2, and an axis hole is provided on the mounting seat. The rotating shaft 73 is pivotally matched with the axis hole, thereby realizing the rotation connection between the wind-cutting baffle 7 and the car 2.

[0052] Specifically, the movement of the elevator car 2 up and down in the hoistway 1 is similar to the movement of a piston in a cylinder. However, the airflow between the hoistway 1 and the elevator car 2 is very high during the elevator car's up and down movement. To utilize this airflow, the inventors have ingeniously designed a V-shaped windshield 7. As shown in Figures 3-5, the windshield 7 includes an upper plate 71 and a lower plate 72, which are connected and angled to form a V-shaped structure.

[0053] As shown in Figure 4, when the car 2 moves upward, the external air flow at this time flows downward relative to the car 2. Therefore, when the air flow blows towards the wind cut baffle 7 on the side wall of the car 2, it will push the wind cut baffle 7 to rotate downward until the lower plate body 72 abuts against the side wall of the car 2, and the wind cut baffle 7 cannot continue to rotate. At this time, the lower air inlet 212 is blocked by the lower plate body 72, and the upper air inlet 211 is exposed, and under the guiding action of the inclined upper plate body 71, the external air flow will automatically flow into the car 2 through the upper air inlet 211.

[0054] As shown in Figure 5, when the car 2 moves downward, the external air flow at this time flows upward relative to the car 2. Therefore, when the air flow blows towards the wind cut baffle 7 on the side wall of the car 2, it will push the wind cut baffle 7 to rotate upward until the upper plate body 71 abuts against the side wall of the car 2, and the wind cut baffle 7 cannot continue to rotate. At this time, the upper air inlet 211 is blocked by the upper plate body 71, and the lower air inlet 212 is exposed, and under the guiding action of the inclined lower plate body 72, the external air flow will automatically flow into the car 2 through the lower air inlet 212.

[0055] As shown in Figures 3, 6 and 7, the fan 3 used in Example 3 is not an ordinary exhaust fan 3, but a dual-purpose fan 3. The fan 3 is arranged outside the car 2 and includes an exhaust pipe 31, a lower shell 32, an upper shell 33, a motor 35 and a wind wheel 36. The exhaust pipe 31 is arranged at the exhaust port 22, and the lower shell 32 is connected to the exhaust pipe 31. The lower shell 32 is a tapered shell that continuously expands upward. The upper shell 33 is detachably arranged above the lower shell 32 and is spaced apart from the lower shell 32 to define a 360-degree annular air outlet 38. The circumferential edge of the upper shell 33 is provided with a tapered flange 34 that continuously expands downward. A motor 35 is provided above the upper shell 33, and a wind wheel 36 is provided between the upper shell 33 and the lower shell 32. The motor 35 is connected to the wind wheel 36.

[0056] Specifically, when the car 2 moves up and down, the external air flow can automatically cut into the car 2 under the action of the wind baffle 7. At this time, the fan 3 does not need to be turned on. The flowing air flow will then automatically flow upward to the exhaust port 22, and then be discharged in all directions through the 360-degree annular air outlet 38, realizing the bottom-up flow of the air flow in the car 2.

[0057] In addition, the lower shell 32 of the fan 3 is a conical shell that continuously expands upward, and the circumferential edge of the upper shell 33 is provided with a conical flange 34 that continuously expands downward. When the car 2 moves up and down, the external air flow flows through the above-mentioned conical lower shell 32 or flange 34, and a jet attraction is generated at the edge, which can further attract the rising air flow in the car 2 to be discharged smoothly through the annular air outlet 38, thereby realizing unpowered ventilation when the car 2 moves up and down.

[0058] When the car 2 stops at a floor and opens the door to let passengers get on and off, the car 2 does not move at this time. The elevator control system then controls the fan 3 to start automatically, and the motor 35 drives the wind wheel 36 to rotate for active air extraction and discharge. When the car 2 closes the door and starts to move, the elevator control system controls the fan 3 to stop working and perform the above-mentioned unpowered ventilation.

[0059] Therefore, in Example 3, through the mutual cooperation of the V-shaped wind baffle 7 and the dual-purpose fan 3, it is possible to achieve unpowered ventilation of the airflow from bottom to top when the car 2 is in the moving state and active exhaust ventilation of the airflow from bottom to top by the fan 3 when the car 2 is parked on the floor. As a result, the fan 3 does not need to work all the time, which can reduce the energy consumption and noise of the fan 3.

[0060] In actual application, as shown in Figure 6, the upper shell 33 and the lower shell 32 are detachably connected by screws 37 and nuts. For example, the upper shell 33 and the lower shell 32 are respectively provided with through holes for passing the screws 37, and the long screws 37 are provided with several nuts for fixing the upper shell 33 and the lower shell 32.

[0061] Furthermore, in order to improve the air quality in the shaft 1, as shown in Figures 1 and 2, a vent 11 may be provided on the shaft 1, or some gas purification devices may be provided in the shaft 1, such as a nozzle provided on the inner wall of the shaft 1, which can regularly spray disinfectant, deodorant, etc.; or an ultraviolet disinfection lamp may be installed on the outer top of the car 2, and when the car 2 moves up and down, the ultraviolet disinfection lamp can irradiate and disinfect the shaft 1.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic ventilation device for a cabin elevator, characterized in that: include: A car and a fan, wherein the car is arranged in a hoistway so as to be movable up and down, an air inlet is arranged at the bottom of the car, an air outlet is arranged at the top, and the fan is arranged at the air outlet, and the fan is used to extract air in the car from bottom to top; It also includes a wind-cutting baffle, wherein the air inlet is arranged at the bottom area of ​​the side wall of the car, the air inlet includes an upper air inlet and a lower air inlet, the wind-cutting baffle is a V-shaped baffle, the V-shaped corner of the wind-cutting baffle is arranged between the upper air inlet and the lower air inlet and is freely rotatably installed on the side wall of the car, and the wind-cutting baffle is used to rotate upward to cover the upper air inlet or rotate downward to cover the lower air inlet.

2. The automatic ventilation device for a cabin elevator according to claim 1, characterized in that: The air inlet is arranged at the bottom area of ​​the side wall of the car and is not higher than 500 mm of the bottom wall of the car.

3. The automatic ventilation device for a cabin elevator according to claim 1, characterized in that: The fan is integrated with an air conditioner and a purifier, an air supply pipe is provided at the air outlet of the fan, a avoidance opening is provided at the top of the car, the air supply pipe extends downward into the car through the avoidance opening, and the pipe opening of the air supply pipe forms the air inlet of the car.

4. The automatic ventilation device for a cabin elevator according to claim 1, characterized in that: A rotating shaft is fixedly provided at the V-shaped corner of the wind-cutting baffle, a mounting seat is provided on the side wall of the car, an axis hole is provided on the mounting seat, and the rotating shaft is pivotally matched with the axis hole.

5. The automatic ventilation device for a cabin elevator according to claim 1, characterized in that: The fan is a dual-purpose fan, which is arranged outside the car, and includes an exhaust pipe, a lower shell, an upper shell, a motor and a wind wheel. The exhaust pipe is arranged at the exhaust port, and the lower shell is connected to the exhaust pipe. The lower shell is a conical shell that expands upward continuously. The upper shell is detachably arranged above the lower shell and is spaced apart from the lower shell to define a 360-degree annular air outlet. The circumferential edge of the upper shell is provided with a conical flange that expands downward continuously. The motor is arranged above the upper shell, the wind wheel is arranged between the upper shell and the lower shell, and the motor is connected to the wind wheel.

6. The automatic ventilation device for a cabin elevator according to claim 5, characterized in that: The upper shell and the lower shell are detachably connected via a screw and nut.

7. The automatic ventilation device for a cabin elevator according to claim 1, characterized in that: The well is provided with a ventilating opening.

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