Method for storing fluorine resin coating steel plate

Abstract

To provide a ventilation method for ventilating a target space so as to prevent droplets containing bacteria or viruses emitted from an infected person from floating in an indoor space.SOLUTION: A ventilation method sends a signal of an anemometer (3) to a control device (2) while observing an indoor wind speed with the anemometer, using ventilation devices (6), (7) comprising an air supply device (8) having an air supply fan (4) and an exhaust device (9) having an exhaust device (5) in a target space (S) in order to prevent droplets containing bacteria or viruses emitted from an infected person from floating in the target space (S), and causes the control device to control the ventilation devices (6), (7), thereby ventilating the target space so as to prevent the droplets from floating.SELECTED DRAWING: Figure 1

Description

Detailed Description of the Invention

Technical Field

[0001] The present disclosure relates to a ventilation method.

Background Art

[0002] Patent Document 1 discloses a supply and exhaust system that detects the room pressure of a target space by detecting the wind speeds of a supply fan and an exhaust fan in the target space where supply air and exhaust air are provided.

[0003] Further, Patent Document 2 also discloses a push-pull type ventilation device composed of a push part and a pull part for harmful gases generated during welding work and painting work.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Appropriately ventilating an indoor space where people tend to gather, such as a hospital waiting room, a seminar room, or a live house, is important from the perspective of infection control. For example, in an indoor space with a relatively high density of multiple people, if there is a person infected with a microorganism such as a virus, the risk of infection to other people increases due to the air in which the droplets of the infected person float. Poliomyelitis (polio), tuberculosis, diphtheria, severe acute respiratory syndrome (limited to those with the pathogen being the SARS coronavirus of the genus Coronaviridae), avian influenza (H5N1), Middle East respiratory syndrome (MERS), and avian influenza (H7N9), which are classified as Class II in terms of infectiousness, are mainly transmitted by droplet infection.

[0006] In addition, it has been suggested that measles, rubella, influenza, novel coronavirus infection, MRSA, etc., which are classified into five categories in terms of the mode of infection, are also transmitted by droplet infection. There is also a risk that the indoor air containing such droplets may leak to the outside. Infection occurs because the virus or pathogen discharged from the infected person without delay floats in the indoor air regardless of the presence or absence of the infected person. For this reason, it is important that the virus or pathogen discharged from the infected person does not float in the indoor air even for a short time. However, conventionally, there has been no device that pays attention to this point and controls the flow rate of indoor air.

[0007] Clarifying the conditions under which droplets from the body float in indoor air is important in designing the device.

[0008] The present inventors have clarified Table 1 below. (For example, Reference 2) The calculation is performed according to Bernoulli's theorem. Although the theorem holds strictly for ideal air without vortices, it has been put into practical use for measuring the air speed in exhaust pipes and the speed of aircraft.

Non-Patent Document 2

Table 1

[0009] The wind speed in the living area of an air-conditioned room is stipulated to be 0.5 m / sec or less in the Building Standards Law and the Building Management Law. From this condition, droplets with a radius of 20 μm or less cannot float indoors with a downward air current of 0.5 m / sec or less.

[0009] Droplets are classified into those with a diameter of 2.5 μm or more and those with a diameter of 2 μm or less. The former are saliva droplets and the latter are aerosol droplets. Droplets with a diameter of 2.5 μm or more fall to the ground 2 to 3 m away after leaving the mouth. Droplets with a diameter of 2 μm or less are thought to float in the air for a long time. Droplets that cause droplet infection are aerosol droplets, and it is important for infection prevention to control them so that they do not float.

[0010] An object of the present invention is to keep the air flow in the target space at a wind speed of 0.5 m / sec or less to 0.05 m / sec or more in the direction of gravity.

[0011] An object of the present disclosure is to provide a ventilation method for controlling the air flow in a room in the direction of gravity.

Means for Solving the Problems

[0012] An embodiment of the present disclosure is a ventilation method in which the air flow in the target space (S) is formed from the upper direction to the lower direction in the same direction as gravity in the target space (S) by an air supply device (8) and an exhaust device (9).

[0013] The air flow in the space described above is measured by an anemometer installed in the target space, and the result is transmitted to the control unit (2) without delay, and is controlled from 0.5 m / sec or less to 0.05 m / sec of the wind speed defined by the Building Standards Act and the Building Management Act.

[0014] In the embodiment of the present disclosure, the position of the air supply device that controls the air flow is installed in the upper part of the sky or the upper part of the wall. The other exhaust device in a pair is installed in the lower part of the floor or the wall (12). These are used in pairs. At this time, there are at least 4 pairs or more of combinations, but they can be installed according to the shape of the target space.

[0015] The anemometer (3) for measuring the air flow described above includes a hot-wire anemometer, a vane anemometer (sometimes called a propeller anemometer), a Pitot tube anemometer, or a manometer anemometer.

[0016] In the above anemometer, the Pitot tube anemometer and the manometer anemometer are suitable for measuring wind speeds of 5 m / s or more. Since the hot wire anemometer and the vane anemometer are suitable for measuring wind speeds of 0.05 m / s or more, the hot wire anemometer and the vane anemometer are suitable for the present invention.

[0017] The first aspect of the present disclosure includes the air supply device (8) and the exhaust device (9) in the target space (S). The anemometer measures the wind speed and sends information to the control device (2) without delay. The control device that receives the information controls at least one of the air supply device (8) and the exhaust device (9) to maintain the air flow rate in the target space in the direction of gravity at 0.5 m / s or less to 0.05 m / s.

[0018] The second aspect of the present disclosure is as in the first aspect, The exhaust air volume of the exhaust device is made larger than the supply air volume of the air supply device, and the air flow rate in the target space is controlled to be maintained at 0.5 m / s or less to 0.05 m / s or more in the direction of gravity.

[0019] The third aspect of the present disclosure is as in the second aspect, By keeping the exhaust air volume of the exhaust device constant and controlling the supply air volume of the air supply device, the air flow rate in the target space is controlled to be maintained at 0.5 m / s or less to 0.05 m / s or more in the direction of gravity.

[0020] The fourth aspect of the present disclosure is as in the second aspect, By keeping the supply air volume of the air supply device constant and controlling the exhaust air volume of the exhaust device, the air flow rate in the target space of the target space is controlled to be maintained at 0.5 m / s or less to 0.05 m / s in the direction of gravity.

[0021] The fifth aspect of the present disclosure is as in the second aspect, By simultaneously controlling the supply air volume of the air supply device and the exhaust air volume of the exhaust device, the air flow rate in the target space is controlled to be maintained at 0.5 m / s or less to 0.05 m / s or more in the direction of gravity.

[0022] Figure 1 is an example of the present invention. In the sixth aspect of the present disclosure, in the second, third, fourth, and fifth aspects, Figure 1 shows an aspect in which the position (11) of the supply port for supplying air to the target space (S) is on the ceiling, and the position (12) of the discharge port for exhausting air is at the lower part of the wall.

[0023] Figure 2 is an example of the present invention. In the seventh aspect of the present disclosure, in the second, third, fourth, and fifth aspects, Figure 2 shows an aspect in which the position (11) of the supply port for supplying air to the target space (S) is on the ceiling, and is at a farther distance from the position (12) of the discharge port for exhausting air.

[0024] Figure 3 is an example of the present invention. In the eighth aspect of the present disclosure, in the second, third, fourth, and fifth aspects, Figure 3 shows an aspect in which the position (11) of the supply port for supplying air to the target space (S) is above the wall, and the position (12) of the discharge port for exhausting air is at the lower part of the wall.

[0025] Figure 4 is an example of the present invention. In the ninth aspect of the present disclosure, in the second, third, fourth, and fifth aspects, Figure 4 shows an aspect in which the position (11) of the supply port for supplying air to the target space (S) is on the ceiling, and the position (12) of the discharge port for exhausting air is on the floor.

[0026] Figure 5 is an example of the present invention. In the tenth aspect of the present disclosure, in the second, third, fourth, and fifth aspects, Figure 5 shows an aspect in which the position (11) of the air supply port to the target space (S) is above the wall, and the position (12) of the discharge port for exhausting air is at the lower part of the wall.

[0027] Figure 6 is an example of the present invention. In the eleventh aspect of the present disclosure, in the second, third, fourth, and fifth aspects, FIG. 6 shows a mode in which even if two rooms are separated by a partition or the like, the air flow is continuous, and among the target spaces (S1) and (S2), the position (11) of the air supply port of (S2) is on the ceiling, and the position (12) of the exhaust port for exhausting air is at the lower part of the wall of (S1).

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following preferred embodiments are merely illustrative in nature and do not limit the present invention, its applications, or their uses. The thick arrows shown in FIGS. 1, 2, 3, 4, 5, and 6 indicate the air flow. For example, (10) in FIG. 1. Embodiment 1

[0030] As shown in FIG. 1, the ventilation system (1) of the present disclosure controls the air flow generated in the target space (S) to a speed of 0.5 m / s or less to 0.05 m / s or more in the direction of gravity in order to prevent droplets regarded as infectious substances from rising and floating in the target space (S). These infectious substances refer to bacteria and viruses floating in the air. The target spaces (S) are the indoor spaces (S), (S1), and (S2) shown in FIGS. 1, 2, 3, 4, 5, and 6 of the present disclosure. FIG. 6 shows the case where there are multiple rooms in the target space. The indoor space (S) is partitioned by the ceiling surface, wall surfaces, and floor surface. An air supply port (11) is formed in the upper part of the ceiling surface or wall surface of the indoor space. At the same time, an exhaust port (12) is formed in the lower part of the wall surface or the floor surface of the same target space as this air supply port.

[0031] Regarding the timing of ventilation of the target space, in business premises where the usage time is determined, such as offices, cafeterias, and conference rooms, considering labor costs, power on and off can be set by a timer. In the case of irregular use, such as banquet halls, live houses, and concert halls, people judge the timing of ventilation. When people use it constantly, ventilation is carried out for 24 hours. Ventilation device

[0032] Regarding the ventilation devices (6) and (7), the ventilation devices (6) and (7) that ventilate the air in the indoor space (S) each have an air supply device (8) that supplies air to the room and an exhaust device (9) that discharges the air in the same room.

[0033] The air supply device (8) consists of an air supply duct (7) and an air supply fan (4). The air supply duct is, for example, a duct. One end of the air supply duct (7) is connected to the air supply port (11) of the indoor space (S). The other end of one end of the air supply duct (7) is connected to the outside. The air supply fan (4) is arranged in the air supply duct (7). The air supply fan (4) sends air into the supply duct (7) in the direction of the thick arrow (10). The air supply fan rotates variably according to the instructions of the control device (2).

[0034] The exhaust device (9) consists of an exhaust passage (6) and an exhaust fan (5), just like the air supply passage. The exhaust passage (6) is, for example, a duct. One end of the exhaust passage is connected to the exhaust port (12) of the indoor space (S). The other end of one end of the exhaust passage is connected to the outside. The exhaust fan (5) is arranged in the exhaust passage. The exhaust fan (5) sends air to the exhaust cylinder in the direction of the thick arrow (10‘). The exhaust fan rotates variably according to the instructions of the control device (2). An anemometer

[0035] Install at least one anemometer in the indoor spaces (S), (S1) and (S2). The obtained wind speed information is transmitted to the control device (2) wirelessly or by wire, and the control device (2) controls the air supply fan, the exhaust fan or both fans so that the wind speed in the indoor spaces (S), (S1) and (S2) becomes from 0.5 m / s or less to 0.05 m / s or more.

[0036] An anemometer suitable for the present invention is a hot-wire anemometer, a vane anemometer (sometimes called a propeller anemometer), a Pitot tube anemometer, or a manometer anemometer, among which are a hot-wire anemometer and a vane anemometer. These are small and lightweight and can be carried, but they may also be fixed. The obtained wind speed information can be sent wirelessly or by wire. The control unit

[0037] Based on the information obtained by the anemometer, the control unit automatically controls the air supply fan, the exhaust fan or both fans so that the wind speed in the indoor spaces (S), (S1) and (S2) becomes from 0.5 m / s or less to 0.05 m / s or more in a method programmed in advance. The control unit may be a commercially available product as long as it is a computer device that automatically controls upon receiving the signal of the anemometer. Also, a control device equipped with sequence control software adapted to the specifications of the air supply fan (4) and the exhaust fan (5) according to the indoor space may be used. Control of wind speed

[0038] The control unit (2) controls the wind speed in the indoor spaces (S), (S1), and (S2) by controlling at least one of the air supply device (8) and the exhaust device (9). Specifically, the control unit (2) controls the rotation speed of at least one of the air supply fan (4) and the exhaust fan (5) that supplies air to the indoor space based on the information obtained by the anemometer (3) installed in the indoor space, so as to maintain a wind speed of 0.05 m / s or more and 0.5 m / s or less.

Industrial Applicability

[0039] As described above, the present disclosure is useful for a ventilation system.

Explanation of Signs

Claims

1. The present invention measures the wind speed in the indoor space with an anemometer (3) while controlling the air flow in the target space (S) in the direction of gravity using ventilation devices (6) and (7), and at the same time, a control device (2) controls the air supply device (8) and the exhaust device (9) constituting the ventilation devices (6) and (7). A ventilation method characterized by this.

2. In controlling the air flow in the target space (S) in the direction of gravity using ventilation devices (6) and (7), the ventilation method according to claim 1, characterized in that the air flow rate is controlled to a speed of 0.05 m / s or more from 0.5 m / s or less.

3. In claims 1 and 2, the ventilation devices (6) and (7) are a ventilation device comprising an air supply device (8) for supplying air to the target space (S) and an exhaust device (9) for discharging air from the target space (S), a ventilation method characterized in that the control device (2) controls at least one of the air supply fan mounted on the air supply device (8) and the exhaust fan mounted on the exhaust device (9) so that the air flow rate in the target space (S) becomes the target wind speed while measuring with an anemometer (3).

4. In claim 3, the target space (S) also includes a plurality of target spaces divided into two or more, even when the plurality of target spaces are the target space (S1) and the target space (S2), a ventilation method in which the air flow velocities in their interiors are controlled to the target wind speed by a ventilation device, an anemometer, and a control device.

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