KR20230066881A - Apparatus for preventing airborne congestion by using sweeping flow and vehicle equipped with the apparatus - Google Patents

Abstract

The present invention relates to an apparatus for preventing airborne infection using a sweeping flow and a vehicle equipped with the apparatus. More specifically, the present invention relates to an apparatus for preventing the spread of airborne infections by blocking the dispersion of droplets by using a sweeping flow for sweeping the air from the head to toe of a patient in a vehicle, and a vehicle equipped with the apparatus for preventing infection. According to the present invention, provided are an apparatus for preventing infection from airborne pathogens in a vehicle where it is impossible to perform social distancing when an infectious disease is prevalent, and a vehicle equipped with the apparatus. In addition, the apparatus can be installed at locations where people are consistently seated such as an office and restaurant, as well as a vehicle, and can prevent the spread of infection in such spaces where many people gather.

Description

Apparatus for preventing airborne congestion by using sweeping flow and vehicle equipped with the apparatus {Apparatus for preventing airborne congestion by using sweeping flow and vehicle equipped with the apparatus}

The present invention relates to a device for preventing airborne infection using a sweeping flow and to a vehicle equipped with the device, and more particularly, to diffusion of droplets using a sweeping flow that sweeps air from above a patient's head down in a vehicle. It relates to an infection prevention device that blocks infection and a vehicle equipped with such an infection prevention device.

The coronavirus outbreak in 2019 is characterized by respiratory infections caused by strong droplets through inhalation as well as direct contact. A vehicle for transporting a person infected with the coronavirus needs a device to prevent infection of a passenger. As an actual example, in the early days of the COVID-19 epidemic, there is a case in which taxis with vinyl partitions were operated at Incheon International Airport to transport returnees or patients suspected of being infected. In the case of such a simple vinyl partition, there is an advantage that it is easy to install and collect, but there is a problem that infection may occur during the transportation process because it is difficult to completely seal between the driver's seat and the cabin.

In addition, due to the absence of an internal quarantine system and air conditioning system, it is difficult to disinfect and quarantine, and the effect of disinfection and quarantine cannot be confirmed, so there is a problem that cross-contamination between the first passenger and the next passenger cannot be ignored.

Accordingly, in preparation for a shortage of ambulances, there is a need for an anti-infectious multi-seater vehicle capable of transporting the elderly or patients suspected of respiratory diseases such as coronavirus.

JP 2019-188864 A

The present invention has been devised to solve this problem, and an object of the present invention is to provide a device for preventing infection due to breathing in a vehicle in which social distancing is impossible during an epidemic of infectious disease, and a vehicle equipped with such a device.

In addition, another object is to install such a device not only in a vehicle but also in a location where people are seated in a fixed manner, such as an office or restaurant, to prevent the spread of infection in a space where such a large number of people gather.

In order to achieve the above object, an airborne infection prevention device using a sweeping flow installed in an indoor space according to the present invention includes a blower installed on an upper part of the indoor space and sending wind downward; and an intake unit installed at a lower portion of the indoor space, absorbing wind sent from the blower unit and discharging it to the outside of the indoor space.

The blower unit may include a pair of one-shaped blower pipes installed in parallel.

The blowing unit may include a filter for filtering pollutants in the air flowing into the indoor space from the outside.

The intake unit may include a suction port for sucking in air descending from the blowing unit; an intake space in which the inhaled air is collected; and an exhaust port for discharging air from the intake space.

The intake unit may include an intake fan for effectively absorbing wind sent from the blower unit and discharging it to the outside.

The intake unit may include a filter for filtering pollutants in the air discharged to the outside through the exhaust port immediately before discharge.

The intake unit may include a filter for filtering pollutants in the air sucked through the intake port.

The intake port may be formed on a side surface of the intake unit, and the exhaust port may be formed on a rear surface of the intake unit.

According to another aspect of the present invention, an infection prevention vehicle including an airborne infection prevention device using the sweeping flow is disclosed.

The infection-preventing vehicle may further include a blocking barrier between seats in the first row and seats in the second row in order to block contaminants from infected passengers on board.

The infection-preventing vehicle may further include an assistive boarding and disembarking seat capable of rotating, lifting up, and down in an electric manner for boarding and alighting of the disabled or the elderly.

The infection-preventing vehicle may further include a wheelchair slope installed at the rear end of the infection-preventing vehicle for boarding and disembarking of the wheelchair.

According to the present invention, there is an effect of providing a device for preventing infection due to breathing in a vehicle in which social distancing is impossible during an epidemic of an infectious disease, and a vehicle equipped with such a device.

In addition, by installing such a device not only in a vehicle but also in a location where people are seated in a fixed manner, such as an office or restaurant, there is an effect of preventing the spread of infection in a space where a large number of people gather.

1 is a cross-section of a vehicle equipped with an infection prevention device according to the present invention, and is a view for explaining an air conditioner.
Figure 2 is a schematic diagram showing the movement of the blowing unit and the intake unit and wind of the infection prevention device according to the present invention.
Figure 3 is a cross-section of a vehicle equipped with an infection prevention device according to the present invention, and is a view for explaining a blocking barrier.
4 is a cross-section of a vehicle equipped with an infection prevention device according to the present invention, and is a view for explaining an assistive seat for getting on and off.
Figure 5 is a cross-section of a vehicle equipped with an infection prevention device according to the present invention, a view for explaining a wheelchair boarding slope provided in the vehicle.
6 is a diagram showing modeling and design variables for flow analysis of the operation of an air conditioner among infection prevention devices according to the present invention.
7 is a view showing a cross section selected for the flow analysis of FIG. 6;
Fig. 8 is a diagram showing flow analysis results in cross section 1 among the cross sections in Fig. 7;
Fig. 9 is a diagram showing flow analysis results in cross section 2 among the cross sections in Fig. 7;
Fig. 10 is a diagram showing flow analysis results in cross section 3 of the cross section in Fig. 7;
Fig. 11 is a diagram showing flow analysis results in section 4 among the sections in Fig. 7;
12 is a diagram showing the flow of the entire inside of the vehicle by the air conditioner of the infection prevention device according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor appropriately uses the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, various alternatives may be used at the time of this application. It should be understood that there may be equivalents and variations.

1 is a cross-section of a vehicle 200 equipped with an infection prevention device 100 according to the present invention, and is a view for explaining an air conditioner 110 of the infection prevention device 100.

Figure 1 (a) is a cross-sectional view of the vehicle 200 on which the infection prevention device 100 is mounted, viewed from above, and Figure 1 (b) is a view from the rear end of the vehicle 200, showing the infection prevention device 100 It is a diagram showing ventilation, intake, and exhaust by the air conditioner 110 as arrows.

The infection prevention device 100 operates to prevent infection in the indoor space. Here, the indoor space may be various spaces such as offices and restaurants where a large number of people gather, and in FIGS.

The air conditioning device 110 of the infection prevention device 100 is installed on the upper part of the indoor space and blows the wind downward, and the blower 111 installed on the lower part of the indoor space and the wind blown from the blower 111 and an intake unit 112 that absorbs and discharges the air to the outside of the corresponding indoor space. At this time, the blower 111 includes a pair of one-shaped blower pipes 111 installed in parallel, as shown in FIGS. 1 (a) and (b). The blower 111 may be attached to the ceiling of the indoor space, but is not limited thereto, and may be attached to left and right side parts as shown in FIG. 1(b).

The blower 111 blows the wind downward so as to be almost vertical, as indicated by the arrow in FIG. 1(b). In order to effectively absorb the wind blown out in this way, it is preferable to have an intake fan in the intake unit 112 . The intake fan serves to absorb the wind coming down and discharge it to the outside of the indoor space.

In addition, in order to prevent pollutants from being discharged to the outside of the indoor space, the intake unit 112 may include a filter for filtering pollutants in the air at a position immediately before being discharged. Such a filter may be composed of a high-efficiency particulate air (HEPA) filter, which is a high-performance air purification filter.

In addition, the blower 111 may also have a filter for filtering pollutants in the outside air at a position immediately before blowing air into the indoor space when external air is introduced and blown. Such a filter may also be configured as a high-efficiency particulate air (HEPA) filter, which is a high-performance air purification filter.

The intake part 112 may also be installed as a pair of one-shaped tubes similar to the blower part 111 at the bottom, but in a place where it is difficult to create such a space, such as inside a vehicle, in a specific location such as a dead zone inside the vehicle may be provided. A preferred embodiment of the intake unit 112 will be described with reference to FIG. 2 below.

Figure 2 is a schematic diagram showing the movement of the blowing unit 111 and the intake unit 112 and wind of the infection prevention device according to the present invention.

An intake unit 112 in the form of a console box may be installed between the lower sheets in order to prevent the air coming down from the upper blowing unit 111 from bouncing up and mixing the flows. The intake part 112 sucks in air from intake ports on the left and right sides, and the sucked air passes through the inner space of the box (hereinafter referred to as 'intake space') and discharges it to the rear exhaust port, and the air discharged to the rear of the vehicle It is sucked back into the inlet of to create a flow that moves to the top and comes down through the blower 111.

As described above with reference to FIG. 1 , in order to prevent pollutants from being discharged to the outside of the indoor space, HEPA for filtering pollutants in the air is placed at a position immediately before being discharged from the intake unit 112, that is, at the exhaust port ( High Efficiency Particulate Air (HEPA) filters may be provided. In addition to this, a PRE filter, which is a preprocessing filter, may be attached to a suction port through which air is sucked from the intake unit 112 . With this filter, the intake unit 112 purifies the air swept down from the upper end, thereby creating a flow of clean indoor air.

The intake unit 112 as described with reference to FIG. 2 can also be installed in various spaces such as offices and restaurants where many people gather, as well as inside the vehicle illustrated in FIG. 2 .

3 is a cross-section of a vehicle 200 equipped with an infection prevention device 100 according to the present invention, and is a view for explaining the blocking barrier 120.

As one component of the infection prevention device 100, the blocking barrier 120 may be installed between the first row and the driver's seat of the vehicle 200 to prevent infection during transportation.

4 is a cross-section of a vehicle 200 equipped with an infection prevention device 100 according to the present invention, and is a view for explaining the getting on and off assist seat 130.

As shown in FIG. 4 (b), the getting on and off assist seat 130 is driven by an electric method for easy boarding of the disabled, the elderly, etc., rotates, and lifts down and lifts from the outside of the vehicle. up), etc. are configured to be possible.

5 is a cross-section of a vehicle 200 equipped with an infection prevention device 100 according to the present invention, and is a view for explaining a wheelchair boarding slope 140 provided in the vehicle 200.

As shown in FIG. 5 (b), a wheelchair boarding slope 140 is installed outside the rear end of the vehicle to assist in getting on and off the wheelchair.

6 is a diagram showing modeling and design variables for flow analysis of the operation of an air conditioner among infection prevention devices according to the present invention.

6(b) shows a conventional air conditioner model 10 and a flow model 20 of an airborne infection prevention device using the sweeping flow of the present invention. The internal structure of the second and third rows was simplified by assuming that patients and guardians were on board in the second row, and a total of 596,212 meshes were made of poly-hexacore.

In the conventional air conditioner model 10, air is blown into the interior space from four upper air vents, and exhaust is provided at the lower rear side. In the flow model 20 of the airborne infection prevention device using the sweeping flow of the present invention, as described with reference to FIG. An outlet portion of the intake unit 112 that absorbs air from the blower unit 111 by an intake fan is shown.

D11, D12, D21 and D22 are given conditions, D11 and D12 mean two initial conditions applied to the conventional air conditioner model 10, and D21 and D22 are the airborne infection prevention device using the sweeping flow of the present invention. This means two initial conditions applied to the flow model 20.

D11 has no side inflow and ACH (mass flow rate) is 57, D12 has side inflow and ACH is 57, D21 has side inflow and ACH is 20, and finally D22 has side air It was set to a state where there was inflow and ACH was 57. During the breathing process of the occupant, the velocity at the nose was assumed to be 22 m/s. The methodology and boundary conditions for the analysis are shown in the table below.

[Table 1]

Hereinafter, the flow analysis results will be described with reference to FIGS. 7 to 12 .

FIG. 7 is a view showing a cross section selected for the flow analysis of FIG. 6 .

As shown in FIG. 7, section 1 (P1), section 2 (P2), section 3 (P3), and section 4 (P4) are selected sections, and the flow for each section is referred to with reference to FIGS. 8 to 11 below. Explain the analysis results.

FIG. 8 is a diagram showing flow analysis results in cross section 1 among the cross sections in FIG. 7 , and FIG. 9 is a diagram showing flow analysis results in cross section 2 .

Section 1 is a patient seat, and section 2 is a protector seat.

Looking at the results for section 1, it can be seen that air flows backward toward the rear of the occupant at 15 m/s in the case of D11, D12, and D22. In this case, if a passenger in the second row or a passenger in the rear wheelchair seat is an infected person, there is a high possibility that droplets will propagate and the guardian will also be infected due to the air flowing backward.

However, in the case of D21, except for the upper flow (red arrow), it can be seen that the rest of the flow is vortexing at the rear side. In the case of section 2 (protective magnet), it can be confirmed that the flow similar to that of section 1 (patient seat) is shown. This tendency means that air distribution occurs stably when the mass flow rate of ACH is smaller than that of the initial condition (ACH 57).

FIG. 10 is a view showing flow analysis results in section 3 (rear side of second-row seats) among the sections in FIG. 7 .

In the case of D11 and D12, it can be seen that the air is directed upward. As described above through the analysis of section 1 and section 2, this is interpreted as a result generated in the upper part with the lower air flowing backward.

In the case of D21, it is not that there is no flow to the top, but it is a very low level, and a flow is generated from the top to the bottom at a speed of 071 m/s behind the seat.

FIG. 11 is a view showing flow analysis results in section 4 (front part of second-row occupants) among the sections in FIG. 7 .

In the case of D11, D12, and D22, it can be confirmed through simulation results that the air flow reversed from the rear of the seat also affects the front. However, in the case of D21, it can be confirmed that there is no reverse flow phenomenon.

12 is a diagram showing the flow of the entire inside of the vehicle by the air conditioner of the infection prevention device according to the present invention.

Referring to the results of FIGS. 7 to 11 and FIG. 12, as a result, the flow model 20 of the airborne infection prevention device using the sweeping flow of the present invention is more internal than the existing air conditioner flow model 10 It was confirmed that the air distribution performance was excellent, and in particular, the design such as the D21 showed a more desirable result because the exhaust air flow did not flow back to the second row seats because the ACH was appropriately used.

10: flow model of a conventional air conditioner
20: Flow model of the airborne infection prevention device using the sweeping flow of the present invention
100: airborne infection prevention device using sweeping flow
110: air conditioner
111: blower
112: intake part
120: bulkhead
130, 130.1, 130.2: Rotating lift seat
140: wheelchair slope
200: vehicle

Claims (12)

An airborne infection prevention device using a sweeping flow installed in an indoor space,
a blower installed on the upper part of the indoor space and sending wind downward; and,
An air intake unit installed below the indoor space, absorbing the wind sent from the blower unit and discharging it to the outside of the indoor space.
Airborne infection prevention device using a sweeping flow comprising a. The method of claim 1,
the blower,
To have a pair of one-shaped blow pipes installed in parallel
Airborne infection prevention device using a sweeping flow, characterized in that. The method of claim 1,
the blower,
Providing a filter for filtering pollutants in the air flowing into the indoor space from the outside
Airborne infection prevention device using a sweeping flow, characterized in that. The method of claim 1,
the intake part,
a suction port for sucking in the air coming down from the blower;
an intake space in which the inhaled air is collected; and
Exhaust port for discharging air from the intake space
An airborne infection prevention device using a sweeping flow, characterized in that it comprises a. The method of claim 4,
the intake part,
Having an intake fan for effectively absorbing wind sent from the blower unit and discharging it to the outside.
Airborne infection prevention device using a sweeping flow, characterized in that. The method of claim 4,
the intake part,
Equipped with a filter for filtering pollutants in the air discharged to the outside through the exhaust port immediately before discharge
Airborne infection prevention device using a sweeping flow, characterized in that. The method of claim 4,
the intake part,
Having a filter for filtering pollutants in the air sucked through the inlet
Airborne infection prevention device using a sweeping flow, characterized in that. The method of claim 4,
The inlet is formed on the side of the intake part,
The exhaust port is formed on the rear side of the intake part.
Airborne infection prevention device using a sweeping flow, characterized in that. An infection prevention vehicle comprising the airborne infection prevention device using the sweeping flow of claim 1. The method of claim 9,
Further providing a blocking barrier between the first row seats and the second row seats to block contaminants from infected passengers on board.
Infection prevention vehicle characterized by. The method of claim 9,
Further provision of an assistive boarding and disembarking seat that can be rotated, lifted up and down in an electric manner for boarding and disembarking of the disabled or the elderly.
Infection prevention vehicle characterized by. The method of claim 9,
Further comprising a wheelchair slope installed at the rear end of the infection-preventing vehicle for boarding and disembarking of the wheelchair
Infection prevention vehicle characterized by.

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