Air purification type elevator car with virus sterilization function

Abstract

The application discloses an air purification type elevator car with virus sterilization function, which comprises a car body, a vertical air purifier arranged in the car body, the vertical air purifier comprising an air circulation purification host, an air inlet, a control box door and an air outlet, the air circulation purification host being connected with the air inlet and the air outlet through pipelines, the air circulation purification host comprising a fan, a plurality of HEPA filter screen assemblies, a filter screen mounting groove, a filter screen clamping and fixing mechanism and a driving unit, the plurality of HEPA filter screen assemblies being arranged on the filter screen mounting groove, the driving unit pushing the HEPA filter screen assemblies to move and controlling the filter screen clamping and fixing mechanism to be opened or clamped and closed through a hydraulic pipeline, so that the automatic replacement of the filter screen is realized, the air in the elevator car is purified and disinfected, and the air purification type elevator car provides protection for epidemic prevention, the filter screen in the air circulation purification host can be automatically replaced, the continuity of equipment work is ensured, and the working intensity of maintenance personnel is reduced.

Description

Technical Field

[0001] This invention relates to an air-purifying elevator car with virus disinfection function, specifically an elevator car with an automatic virus disinfection device. Background Technology

[0002] Disinfection, as an effective measure and means to cut off the transmission routes of infectious diseases, has played an important role in epidemic prevention and control.

[0003] As elevators are a tool used daily by people, the enclosed space of the elevator car increases the risk of virus transmission. Therefore, it is necessary to purify and disinfect the air inside the elevator car.

[0004] The main methods for eliminating viruses include: ultraviolet (UV) disinfection, ionized air purification, and HEPA filter air purification (HEPA filters, also known as High-efficiency Particulate Air Filters). Tests have shown that HEPA filters are highly effective, capturing over 99% of virus-sized particles in a single pass. The captured viruses adhere to the inside of the filter and are no longer present in the air. HEPA filter air purifiers also do not release any pollutants harmful to humans, such as ozone (from ionized air purifiers during operation) and ultraviolet radiation (from UV air purifiers).

[0005] The drawback of HEPA filter air purification is that if the particles adsorbed by the filter exceed its set dust holding capacity, the air resistance through the filter will increase significantly, and the filter's filtration efficiency will decrease or even fail. Therefore, timely filter replacement is necessary to maintain air purification. Manual maintenance is very inefficient and prone to delays. Therefore, designing an elevator car that can automatically purify and disinfect the air, and automatically replace the filter to ensure the dust holding capacity remains below the set value, would play a positive role in controlling virus transmission. Summary of the Invention

[0006] The purpose of this invention is to provide an air-purifying elevator car with virus disinfection function, which can purify and disinfect the air inside the car and can automatically replace the HEPA filter assembly.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] An air-purifying elevator car with virus disinfection function includes a car body and a vertical air purifier installed inside the car body. The vertical air purifier includes an air circulation and purification host, an air inlet, a control box door, and an air outlet. The air circulation and purification host is connected to the air inlet and the air outlet through a pipe. The air circulation and purification host is equipped with a fan, a HEPA filter assembly, and an automatic filter replacement mechanism.

[0009] The fan draws air from the car into the air circulation and purification unit through the air inlet. After being filtered by the HEPA filter assembly, the air is discharged from the air outlet, thus purifying and disinfecting the air inside the car. The air circulation and purification unit can accommodate multiple HEPA filter assemblies at once. An automatic filter replacement mechanism automatically replaces the HEPA filter assemblies. Operators can replace HEPA filter assemblies in batches by opening the control box door, effectively reducing the frequency of filter replacement.

[0010] In order to achieve automatic filter replacement, the air circulation and purification unit includes a filter installation slot, a filter clamping and fixing mechanism, and a drive unit. Multiple HEPA filter assemblies are placed in the filter installation slot. The drive unit pushes the HEPA filter assemblies to move and controls the filter clamping and fixing mechanism to open or close via hydraulic lines, thereby removing the old filter assembly and replacing it with a new filter assembly, thus achieving automatic filter replacement.

[0011] The HEPA filter assembly is mounted on the filter mounting slot. To ensure that the HEPA filter assembly does not spatially interfere with the filter clamping mechanism during storage, operation, and recycling, the HEPA filter assembly can automatically flip in the horizontal plane. This guarantees that the filter clamping mechanism can be installed in the space above and below the HEPA filter assembly when it is in operation.

[0012] To ensure the stability of the filter replacement operation and reduce the power source, the drive unit uses only one servo motor to control the opening and closing of the filter clamping mechanism and the pushing of the HEPA filter assembly, while ensuring the stability of the operation logic.

[0013] The servo motor rotates once, going through four stages. In the first stage, the filter clamping and fixing mechanism is in the closed state, and the HEPA filter assembly does not move. In the second stage, the filter clamping and fixing mechanism opens, and the HEPA filter assembly does not move. In the third stage, the filter clamping and fixing mechanism is in the open state, the HEPA filter assembly is pushed down one working position, the filter at the bottom of the working area is replaced and enters the recycling area, and the filter at the bottom of the storage area enters the working area. In the fourth stage, the filter clamping and fixing mechanism closes, the HEPA filter assembly does not move, and finally returns to the initial first stage, completing one operation cycle and ending the filter replacement operation. The next filter replacement operation repeats the above cycle.

[0014] Preferably, multiple HEPA filter assemblies are stacked and working simultaneously in the working area. When the filter is replaced, the filter at the bottom of the working area is moved to the recycling area, and a new filter is added from the storage area. This improves the utilization rate of the filter.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The air circulation and purification unit purifies and disinfects the air inside the elevator car, maintaining air quality and providing a guarantee for epidemic prevention.

[0017] Second, the filters inside the air circulation and purification unit can be automatically replaced, thus ensuring the continuity of equipment operation and reducing the workload of maintenance personnel.

[0018] III. The filter replacement process includes opening the filter clamping mechanism, replacing the HEPA filter assembly, and closing the filter clamping mechanism. These three actions are powered by a single motor, resulting in a simple structure and high stability.

[0019] Fourth, multiple HEPA filter assemblies are stacked and working simultaneously in the working area. When the filter is replaced, the filter at the bottom of the working area is moved to the recycling area, and a new filter is added from the storage area, thereby improving the utilization rate of the filter. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the vertical air purifier in this invention.

[0023] Figure 3 This is a diagram showing the internal structure of the air circulation and purification host in this invention.

[0024] Figure 4 This is a schematic diagram of the filter screen clamping and fixing mechanism.

[0025] Figure 5 This is a schematic diagram of the HEPA filter assembly.

[0026] Figure 6 A schematic diagram of the filter screen mounting groove.

[0027] Figure 7 This diagram shows the sliding state of the HEPA filter assembly within the filter mounting slot.

[0028] Figure 8 for Figure 7 Top view.

[0029] Figure 9 This is a structural diagram of the driving unit.

[0030] Figure 10 This is a timing diagram showing the operation of the end face cam and spiral pusher after they are unfolded in the drive unit.

[0031] Figure 11 This is a flowchart illustrating the working process of the air circulation and purification host in this invention.

[0032] In the diagram: 1--Car body; 2--Vertical air purifier; 21--Air inlet; 22--Control box door; 23--Air outlet; 3--Air circulation and purification main unit; 31--HEPA filter assembly; 3101--Filter body; 3102--Filter frame; 3103--Sliding seat; 3104--Elastic connecting piece; 3105--Slide groove; 3106--Pulley; 3107--Baffle; 32--Fan; 33--Filter clamping and fixing mechanism; 3301--Fixing bracket; 3302--Guide rail; 3303--Upper slider; 3304- - Lower slider; 3305-- Connecting rod; 3306-- Hydraulic push rod; 3307-- Return spring; 3308-- Upper ventilation pipe; 3309-- Lower ventilation pipe; 34-- Filter screen mounting slot; 3401-- First baffle; 3402-- Second baffle; 3403-- Third baffle; 3404-- Slide rail; 35-- Drive unit; 3501-- Servo motor; 3502-- Drive shaft; 3503-- End face cam; 3504-- Spiral pusher; 3505-- Main hydraulic cylinder; 3506-- Rotary wheel; 36-- Hydraulic pipeline; 4-- Pipeline. Detailed Implementation

[0033] like Figure 1 As shown, an air-purifying elevator car with virus disinfection function includes a car body 1. A vertical air purifier 2 is installed inside the car body 1. The vertical air purifier 2 includes an air circulation and purification unit 3, an air inlet 21, a control box door 22, and an air outlet 23. Figure 2 As shown, the air circulation and purification host 3 is connected to the air inlet 21 and the air outlet 23 through the pipe 4. The air circulation and purification host 3 is equipped with a fan 32, a HEPA filter assembly 31 and an automatic filter replacement mechanism.

[0034] The fan 32 draws air from the car into the air circulation and purification unit 3 through the air inlet 21. After being filtered by the HEPA filter assembly 31, the air is discharged from the air outlet 23, thus purifying and disinfecting the air inside the car. The air circulation and purification unit 3 can accommodate multiple HEPA filter assemblies 31 at once. An automatic filter replacement mechanism can automatically replace the HEPA filter assemblies 31. After opening the control box door 22, operators can replace the HEPA filter assemblies 31 in batches, effectively reducing the frequency of filter replacement.

[0035] In order to achieve automatic filter replacement, such as Figure 3 As shown, the air circulation and purification host 3 includes a filter installation slot 34, a filter clamping and fixing mechanism 33, and a drive unit 35. Multiple HEPA filter assemblies 31 are placed on the filter installation slot 34. The drive unit 35 pushes the HEPA filter assemblies 31 to move and controls the filter clamping and fixing mechanism 33 to open or close via hydraulic lines 36, thereby removing the old filter assembly and replacing it with a new filter assembly, thus realizing automatic filter replacement.

[0036] like Figure 4 As shown, the filter clamping and fixing mechanism 33 includes a fixing frame 3301, a guide rail 3302, an upper slider 3303, a lower slider 3304, a connecting rod 3305, a hydraulic push rod 3306, a return spring 3307, an upper ventilation pipe 3308, and a lower ventilation pipe 3309. The guide rail 3302 is mounted on the fixing frame 3301. The upper slider 3303 and the lower slider 3304 are mounted on the guide rail 3302. The hydraulic push rod 3306 is horizontally mounted in the middle of the fixing frame 3301. The hydraulic push rod is connected to the drive unit 35 through a hydraulic pipeline 36. The hydraulic push rod 3306 is connected to the upper slider 3303 and the lower slider 3304 through the connecting rod 3305. The return spring 3307 is mounted on the outer end of the upper slider 3303 and the lower slider 3304. The upper ventilation pipe 3308 and the lower ventilation pipe 3309 are respectively mounted on the upper slider 3303 and the lower slider 3304.

[0037] The working principle of the filter clamping and fixing mechanism 33 is as follows: When the drive unit 35 controls the hydraulic push rod 3306 to extend through the hydraulic pipeline 36, the hydraulic push rod 3306 drives the upper slider 3303 to move upward through the connecting rod 3305, while the lower slider 3304 moves downward. As a result, the distance between the upper ventilation pipe 3308 and the lower ventilation pipe 3309 increases, and the HEPA filter assembly 31 between the upper ventilation pipe 3308 and the lower ventilation pipe 3309 can be removed without resistance. When the new HEPA filter assembly 31 enters between the upper ventilation pipe 3308 and the lower ventilation pipe 3309, the hydraulic push rod 3306 retracts, the distance between the upper ventilation pipe 3308 and the lower ventilation pipe 3309 decreases, and the return spring 3307 provides a preload force to clamp the HEPA filter assembly 31 between the upper ventilation pipe 3308 and the lower ventilation pipe 3309.

[0038] The HEPA filter assembly 31 is mounted on the filter mounting slot 34. To ensure that the HEPA filter assembly 31 does not interfere with the filter clamping and fixing mechanism 33 in space during the storage, operation, and recycling phases, the HEPA filter assembly 31 can automatically flip in the horizontal plane. This ensures that the filter clamping and fixing mechanism 33 can be installed in the space above and below the HEPA filter assembly 31 when it is in operation.

[0039] like Figure 5 As shown, the HEPA filter assembly 31 includes a filter body 3101, a filter frame 3102, a sliding seat 3103, an elastic connecting piece 3104, a groove 3105, a lever 3106, and a baffle 3107. The filter body 3101 is fixedly installed inside the filter frame 3102. The filter frame 3102 and the sliding seat 3103 are connected by the elastic connecting piece 3104. A groove 3105 is provided in the center of the sliding seat 3103. A lever 3106 is provided on one side of the sliding seat 3103. A baffle 3107 is provided on the filter frame 3102.

[0040] like Figure 6 As shown, the filter mounting groove 34 includes a first baffle 3401, a second baffle 3402, a third baffle 3403, and a slide rail 3404. Multiple HEPA filter assemblies 31 are mounted on the slide rail 3404. The first baffle 3401 is located in the storage area a of the slide rail 3404, abutting against the baffle plate 3107 of the HEPA filter assembly 31 located in the storage area a. The second baffle 3402 is located in the working area b of the slide rail 3404, abutting against the baffle plate 3107 of the HEPA filter assembly 31 located in the working area b. The third baffle 3403 is located in the recycling area c of the slide rail 3404, abutting against the baffle plate 3107 of the HEPA filter assembly 31 located in the recycling area c.

[0041] like Figure 7 and 8 As shown, during installation, the sliding seat 3103 of the HEPA filter assembly 31 is fitted onto the slide rail 3404 from the top. Preferably, the groove 3105 on the sliding seat 3103 is a cross groove. When the sliding seat 3103 is installed on the filter mounting groove 34, the sliding seat 3103 can slide in a straight line but will not rotate. During installation, the elastic connecting piece 3104 is bent, and the baffle 3107 of the HEPA filter assembly 31 is held against by the first baffle 3401. When the drive unit 35 moves the HEPA filter assembly 31 downward, the HEPA filter assembly 31 in the storage area a of the slide rail 3404 enters the working area b of the slide rail 3404, and at the same time, the HEPA filter assembly 31 in the working area b of the slide rail 3404 enters the recycling area c. When the HEPA filter assembly 31 enters the working area b from the storage area a, the elastic connecting piece 3104 pops open until the second baffle 3402 abuts against the baffle 3107 of the HEPA filter assembly 31. Similarly, when the HEPA filter assembly 31 enters the recycling area c from the working area b, the elastic connecting piece 3104 continues to pop open until the third baffle 3403 abuts against the baffle 3107 of the HEPA filter assembly 31.

[0042] When the filter needs to be replaced, the drive unit 35 first controls the filter clamping and fixing mechanism 33 to open the upper ventilation pipe 3308 and the lower ventilation pipe 3309. Then, when the drive unit 35 moves the HEPA filter assembly 31 downward, the HEPA filter assembly 31 at the bottom of the working area b will enter the recycling area c, and the HEPA filter assembly 31 at the bottom of the storage area a will enter the working area b. During the process of crossing the area, due to the action of the return spring 3307, the filter body 3101 will shift in position in the plane, thereby avoiding interference with the filter clamping and fixing mechanism 33. Finally, the drive unit 35 controls the filter clamping and fixing mechanism 33 to open the upper ventilation pipe 3308 and close the lower ventilation pipe 3309. The automatic filter replacement action is completed, and the system enters a new working state.

[0043] To ensure the stability of the filter replacement operation and reduce the power source, the drive unit 35 uses only one servo motor 3501 to control the opening and closing action of the filter clamping and fixing mechanism 33 and the pushing action of the HEPA filter assembly 31, and to ensure the stability of the operation logic.

[0044] The specific structure of the drive unit 35 is as follows, such as Figure 9As shown, the drive unit 35 includes a servo motor 3501, a drive shaft 3502, an end face cam 3503, a spiral pusher 3504, a main hydraulic cylinder 3505, and a rotating wheel 3506. The servo motor 3501 is connected to the drive shaft 3502. The end face cam 3503 and the rotating wheel 3506 are mounted on the drive shaft 3502. The end face cam 3503 cooperates with the main hydraulic cylinder 3505. The main hydraulic cylinder 3505 is connected to the hydraulic push rod 3306 of the filter screen clamping and fixing mechanism 33 through a hydraulic pipeline 36, thereby controlling the opening and closing action of the filter screen clamping and fixing mechanism 33. A spiral pusher 3504 is provided on the outside of the rotating wheel 3506. The spiral pusher 3504 cooperates with the paddle 3106 of the HEPA filter assembly 31. When the rotating wheel 3506 rotates one revolution, the spiral pusher 3504 controls the HEPA filter assembly 31 to move downward one working position.

[0045] like Figure 10 The diagram shows the working timing of the end face cam and the spiral pusher in the drive unit after they are unfolded. The servo motor 3501 rotates once, going through four stages. In the first stage S1, the main hydraulic cylinder 3505 is in an uncompressed state, and the corresponding filter screen clamping and fixing mechanism 33 is in a closed state, with no movement of the HEPA filter screen assembly 31. In the second stage S2, the main hydraulic cylinder 3505 triggers a compression action, and the corresponding filter screen clamping and fixing mechanism 33 opens, with no movement of the HEPA filter screen assembly 31. In the third stage S3, the main hydraulic cylinder 3505 is in a compressed state, and the corresponding filter screen clamping and fixing mechanism 33 is in an open state. The HEPA filter screen assembly 31 is pushed down one working position, the filter screen at the bottom of the working area is replaced and enters the recycling area, and the filter screen at the bottom of the storage area enters the working area. In the fourth stage S4, the main hydraulic cylinder 3505 triggers an extension action, and the corresponding filter screen clamping and fixing mechanism 33 closes, with no movement of the HEPA filter screen assembly 31. Finally, it returns to the initial first stage S1, and one operation cycle ends, the screen changing operation ends, and the next screen changing operation repeats the above cycle.

[0046] To ensure that the HEPA filter assembly 31 does not get stuck during movement, it is preferable to set a counterweight or elastic block in the initial section of the slide rail 3404 of the filter mounting groove 34 to ensure that the HEPA filter assembly 31 is provided with thrust.

[0047] The working process diagram of the air circulation purification host of the present invention is as follows: Figure 11As shown, the staff inserts multiple new HEPA filter assemblies 31 into the storage area a of the filter installation slot 34. If there are old HEPA filter assemblies 31 that need to be removed in the recycling area, they are taken out. The air circulation and purification host 3 determines whether the filter needs to be replaced. If so, the drive unit 35 of the air circulation and purification host 3 is activated, entering the second stage S2. The filter clamping and fixing mechanism 33 opens. In the third stage S3, the HEPA filter assembly 31 is pushed to a working position. It is checked whether the HEPA filter assembly 31 in the working area b is intact. If it is not intact, the third stage S3 is repeated until the HEPA filter assembly 31 in the working area b is found to be intact. In the fourth stage S4, the filter clamping and fixing mechanism 33 closes, and finally, the first stage is entered. The filter clamping and fixing mechanism 33 is in the closed state, the fan 32 is started, and the air purification is turned on.

[0048] In this embodiment, multiple HEPA filter assemblies 31 operate simultaneously in the working area. When a filter needs replacing, the filter at the bottom of the working area is moved to the recycling area, and a new filter is added from the storage area. This design improves filter utilization. Alternatively, only one filter could be installed in the working area.

[0049] The above-disclosed embodiments are merely specific examples of this patent, but this patent is not limited thereto. For those skilled in the art, any modifications made without departing from the principles of this invention should be considered to fall within the scope of protection of this invention.

Claims

1. An air-purifying elevator car with virus disinfection function, comprising a car body (1), wherein a vertical air purifier (2) is installed inside the car body (1), characterized in that: The vertical air purifier (2) includes an air circulation and purification unit (3), an air inlet (21), a control box door (22), and an air outlet (23). The air circulation and purification unit (3) is connected to the air inlet (21) and the air outlet (23) through a pipe (4). The air circulation and purification unit (3) is equipped with a fan (32), a HEPA filter assembly (31), and an automatic filter replacement mechanism. The air circulation and purification unit (3) includes a filter mounting slot (34), a filter clamping and fixing mechanism (33), and a drive unit (35). Multiple HEPA filter assemblies (31) are placed on filter mounting slots (34). A drive unit (35) pushes the HEPA filter assemblies (31) to move and controls the filter clamping and fixing mechanism (33) to open or close via hydraulic lines (36). The filter clamping and fixing mechanism (33) includes a fixed frame (3301), a guide rail (3302), an upper slider (3303), a lower slider (3304), a connecting rod (3305), a hydraulic push rod (3306), a return spring (3307), an upper ventilation pipe (3308), and a lower ventilation pipe (3309). The guide rail (3302) is mounted on the fixed frame (3301), and the upper slider (3303) and lower slider (3304) are mounted on the guide rail (3302). The hydraulic push rod (3306) is horizontally mounted in the middle of the fixed frame (3301). The hydraulic push rod is connected to the drive unit (35) through the hydraulic pipeline (36). The hydraulic push rod (3306) is connected to the upper slider (3303) and the lower slider (3304) through the connecting rod (3305). A return spring (3307) is provided at the outer end of the upper slider (3303) and the lower slider (3304). The upper ventilation pipe (3308) and the lower ventilation pipe (3309) are respectively provided on the upper slider (3303) and the lower slider (3304).The HEPA filter assembly (31) includes a filter body (3101), a filter frame (3102), a sliding seat (3103), an elastic connecting piece (3104), a groove (3105), a lever (3106), and a baffle (3107). The filter body (3101) is fixedly installed inside the filter frame (3102). The filter frame (3102) and the sliding seat (3103) are connected by the elastic connecting piece (3104). A groove (3105) is provided in the center of the sliding seat (3103). A lever (3106) is provided on one side of the sliding seat (3103). A baffle (3107) is provided on the filter frame (3102). The filter mounting groove (34) includes a first baffle (3401), a second baffle (3402), a third baffle (3403), and a slide rail (3404). The slide rail (3404) is equipped with multiple HEPA filter assemblies (31). A first baffle (3401) is provided in the storage area (a) of the slide rail (3404), which abuts against the baffle plate (3107) of the HEPA filter assembly (31) in the storage area (a). A second baffle (3402) is provided in the working area (b) of the slide rail (3404), which abuts against the baffle plate (3107) of the HEPA filter assembly (31) in the working area (b). A third baffle (3403) is provided in the recycling area (c) of the slide rail (3404). The third baffle (3403) abuts against the baffle (3107) of the HEPA filter assembly (31) in the recovery zone (c); the drive unit (35) includes a servo motor (3501), a drive shaft (3502), an end face cam (3503), a spiral pusher (3504), a main hydraulic cylinder (3505), and a rotating wheel (3506). The servo motor (3501) is connected to the drive shaft (3502). The end face cam (3503) and the rotating wheel (3506) are mounted on the drive shaft (3502). The end face cam (3503) cooperates with the main hydraulic cylinder (3505). The main hydraulic cylinder (3505) is connected to the hydraulic push rod (3306) of the filter clamping and fixing mechanism (33) through a hydraulic line (36). This controls the clamping and releasing action of the filter clamping mechanism (33). A spiral pusher (3504) is provided on the outside of the rotating wheel (3506). The spiral pusher (3504) cooperates with the lever (3106) of the HEPA filter assembly (31). When the rotating wheel (3506) rotates one revolution, the spiral pusher (3504) controls the HEPA filter assembly (31) to move downward one working position.

2. The air-purifying elevator car with virus disinfection function according to claim 1, characterized in that: The groove (3105) on the sliding seat (3103) is a cross groove.

3. The air-purifying elevator car with virus disinfection function according to claim 1, characterized in that: A counterweight or elastic block is set in the initial section of the slide rail (3404) of the filter screen mounting groove (34).

4. The air-purifying elevator car with virus disinfection function according to claim 1, characterized in that: The working area (b) has a capacity to accommodate multiple HEPA filter assemblies (31) operating simultaneously.

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