JP-7856462-B2 - Dust removal system

Inventors

• 久保田 貴之
• 森 豊

Assignees

• 大和ハウス工業株式会社

Dates

Publication Date

20260511

Application Date

20220329

Claims (4)

1. It can be arranged along a passage path of an object that includes curved and straight sections in a plan view , and comprises a plurality of blowing units capable of blowing air toward the passage path, Multiple blowing units are arranged along the passage path at predetermined intervals from one another, thereby enabling them to intermittently blow air onto the object passing along the passage path. Multiple of the aforementioned air blowing units are arranged on both sides of the passage path, The air outlets of the multiple air blowing units arranged on both sides of the passage path are arranged opposite each other so as to be paired with respect to the passage path, and the predetermined intervals along the passage path are arranged to be the same as those of the straight section on the inside of the bent section. Dust removal system.
2. The multiple blower units are formed separately from each other. The dust removal system according to claim 1.
3. It further comprises an ion generating unit that generates ions capable of eliminating static electricity. A dust removal system according to claim 1 or claim 2.
4. The system further comprises a blower that supplies air to at least two of the aforementioned blowing units in a single operation. A dust removal system according to any one of claims 1 to 3.

Description

This invention relates to a dust removal system technology for removing dust adhering to people. Conventional technologies for dust removal systems that remove dust adhering to people are publicly known. For example, as described in Patent Document 1. Patent Document 1 describes a dust removal system (pollen separation device) installed at the entrances and exits of buildings. The dust removal system described in Patent Document 1 detects people entering and exiting a building and blows air towards the detected person, thereby removing dust (pollen, dirt, etc.) attached to them. Regarding the technology for such dust removal systems, there is a desire to further improve the dust removal rate. Japanese Patent Publication No. 2008-20130 A schematic plan view showing a dust removal system according to one embodiment of the present invention.Similarly, a schematic side view.A schematic side view showing the process of removing dust from a subject.A schematic plan view showing an example of a modified arrangement of the air blower units.This diagram shows the difference in dust removal rates between continuous and intermittent airflow. First, we will explain a method for efficiently removing dust using Figure 5. Figure 5 shows an example of an experiment in which air (wind) was blown onto an object to measure the extent to which dust attached to the object was removed (dust removal rate). Data (1) and Data (2) in Figure 5 show the dust removal rate when a continuous airflow (uninterrupted wind) is blown onto the target object. Data (1) shows an example where a continuous airflow was blown for 10 seconds. Data (2) shows an example where a continuous airflow was blown for 30 seconds. Data (3) and (4) in Figure 5 show the dust removal rate when intermittent airflow (air blown intermittently) is applied to an object. Data (3) shows an example where air was blown intermittently for 1 second 10 times (total airflow of 10 seconds). Data (4) shows an example where air was blown intermittently for 0.3 seconds 5 times (total airflow of 1.5 seconds). Note that the wind speed is assumed to be the same for all of the above data (1) to (4). From a comparison of data (1) and data (2) in Figure 5, it can be seen that with continuous airflow, the removal rate increases with longer processing time (airflow time). Furthermore, from a comparison of data (1) and data (3), it can be seen that intermittent airflow results in a higher removal rate for the same total processing time. Additionally, from a comparison of data (1) and data (4), and data (2) and data (3), it can be seen that the processing time required to obtain a comparable removal rate is shorter with intermittent airflow. From the above, it is clear that blowing intermittent airflow onto the object is preferable for efficient dust removal. Therefore, the following describes a dust removal system 1 (one embodiment of the present invention) capable of blowing intermittent airflow onto the object. The dust removal system 1 shown in Figure 1 removes dust adhering to a person or object (hereinafter referred to as "Target Person P" for convenience). Here, dust refers to airborne particles such as pollen. In addition to pollen, dust includes sand, fine dust, PM2.5 (particulate matter with a particle size of 2.5 μm or less). The dust removal system 1 mainly comprises a blower unit 10, an ion generation unit 20, a passage detection unit 30, a blower 40, and a control unit 50. The air blowing unit 10 discharges (blows) air towards the target person P. The air blowing unit 10 mainly comprises a housing 11 and an air outlet 12. The housing 11 shown in Figure 2 is formed in a hollow box shape. While the shape of the housing 11 is not particularly limited, from the viewpoint of space saving, it is desirable to make the front-to-back and side-to-side widths as small as possible. Furthermore, considering the need to blow air over the entire subject P (for example, from head to toe), it is desirable to make the vertical width (height) of the housing 11 larger than that of an average person. The air outlet 12 is the part that discharges air supplied from the blower 40, which will be described later. The air outlet 12 is formed on one side of the housing 11. The air outlet 12 is provided to connect the inside and outside of the housing 11. While the shape of the air outlet 12 is not particularly limited, it is desirable to form it in a vertically elongated shape extending from near the top end to near the bottom end of the housing 11, considering that air will be blown over the entire target person P. As shown in Figure 1, the dust removal system 1 comprises multiple air blowing units 10. The air blowing units 10 are arranged along the expected routes of movement for the target person P (hereinafter referred to as "travel routes W"). Examples of travel routes W include the paths used by the target person P entering and exiting a building, or passageways and corridors partitioned by walls,