JP-7856395-B2 - Disinfection system

JP7856395B2JP 7856395 B2JP7856395 B2JP 7856395B2JP-7856395-B2

Inventors

久保田謙三
藤本卓也
西野優希

Assignees

大和ハウス工業株式会社

Dates

Publication Date: 20260511
Application Date: 20210915

Claims (7)

A disinfection system that uses ozone to disinfect a designated space, An ozone release unit that releases ozone into the aforementioned space, An irradiation unit capable of irradiating the ozone released by the ozone emission unit with ultraviolet light capable of promoting the decomposition of ozone, A circulation unit capable of circulating the air within the aforementioned space, It is equipped with, The irradiation unit is It includes a first irradiation unit capable of irradiating ultraviolet light into the air circulated by the aforementioned circulation unit, The aforementioned circulation unit is The air drawn in from the intake port can be discharged back into the space from the exhaust port. The first irradiation unit is, It is provided in at least one of the exhaust port and the intake port, and is configured to irradiate ultraviolet light across the port, and to irradiate ultraviolet light along the line through which the air passes , The aforementioned space is the interior space of the building, The aforementioned circulation unit is This is an air conditioning system that provides air conditioning for the aforementioned space. A location different from the ozone emission unit arranged within the aforementioned space is provided, Disinfection system.
The first irradiation unit is, Provided at both the exhaust port and the intake port, The disinfection system according to claim 1.
The irradiation unit is Including a second irradiation unit installed on the upper part of the corner portion of the wall that partitions the space, A sterilization system according to claim 1 or claim 2.
The aforementioned space is the interior space of the booth, The booth is further provided with an exhaust section located at the bottom of the booth, which communicates the inside and outside of the booth. The irradiation unit is The exhaust section includes a third irradiation unit capable of irradiating ultraviolet light onto a line through which air passes, The disinfection system according to claim 1.
The system further comprises a control unit capable of controlling the irradiation unit, The control unit, After the ozone emission unit has finished releasing ozone, the irradiation unit starts irradiation. A disinfection system according to claim 1 or claim 4 .
The system further includes a locking mechanism for locking and unlocking a door that allows access to the aforementioned space. The control unit, Before the ozone emission unit begins to release ozone, the door is locked by the locking unit, and after the irradiation unit has finished irradiating, the door is unlocked. The disinfection system according to claim 5.
The ultraviolet light emitted from the aforementioned irradiation unit has a wavelength range of 254 to 280 nm. A sterilization system according to claim 1, or any one of claims 4 to 6 .

Description

This invention relates to a disinfection system technology that uses ozone to disinfect a predetermined space. Conventional techniques for disinfecting a designated space using ozone are publicly known. For example, as described in Patent Document 1. The ozone sterilization and deodorization device described in Patent Document 1 can release ozone from an ozone air generation unit located within the device body. By installing this ozone sterilization and deodorization device in a guest room of an accommodation facility, the guest room can be sterilized. However, since the concentration of ozone (ozone concentration) does not decrease immediately after release, there is a need to improve convenience after ozone-based disinfection. Japanese Patent Publication No. 2018-143581 (a) A floor map of a hotel to which the disinfection system according to the first embodiment of the present invention is applied. (b) A diagram showing a guest room and the disinfection system.A diagram showing the driving pattern.(a) Diagram showing a rapid exhaust pattern. (b) Diagram showing a rapid exhaust pattern.(a) Diagram showing the standard pattern. (b) Diagram showing the standard exhaust pattern.A diagram showing a guest room and disinfection system according to the second embodiment.A diagram showing the operating pattern according to the second embodiment.A diagram showing a two-step disinfection pattern.A diagram showing the check-in and check-out times for each guest room.A diagram showing the allocated cleaning time.A diagram showing the state after the allocation of cleaning and disinfection time has been completed.(a) A diagram showing a guest room and disinfection system according to the third embodiment. (b) A diagram showing a bathroom disinfection pattern.(a) A diagram showing the sterilization system according to the fourth embodiment. (b) A diagram showing the arrangement of the irradiation unit.This figure shows the results of an experiment on the effect of UV-C irradiation on promoting the reduction of ozone concentration.A flowchart showing the first sterilization process performed by the control unit.A diagram showing a first alternative example of the sterilization system according to the fourth embodiment. (b) A diagram showing the arrangement of the irradiation unit.A diagram showing a second alternative example of the sterilization system according to the fourth embodiment. (b) A diagram showing a work booth.A flowchart illustrating the second sterilization process performed by the control unit. The following describes the configuration of Hotel 1, where the disinfection system 20 according to the first embodiment is installed, with reference to Figure 1. Hotel 1 is an accommodation facility for guests (those using guest rooms 10). Hotel 1 consists of a multi-story building. Hotel 1 has multiple guest rooms 10. Note that Figure 1(a) shows the guest room 10 on the second floor of Hotel 1, omitting the guest rooms 10 on other floors. Guest room 10 comprises a bedroom 11, a corridor 12, and a unit bathroom 13. The bedroom 11 is furnished with a bed 11a and a table 11b, etc. The unit bathroom 13 is partitioned from the bedroom 11 and the corridor 12. The unit bathroom 13 is equipped with a bathroom exhaust fan 13a. The bathroom exhaust fan 13a operates 24 hours a day, exhausting the air inside guest room 10 to the outside of Hotel 1. The guest room 10 is ventilated throughout the day by introducing outside air through the corridor, etc. The bathroom exhaust fan 13a is configured to allow for stepwise adjustment of the airflow. More specifically, the bathroom exhaust fan 13a is configured to allow for adjustment from the lowest airflow setting to "24-hour ventilation," "low," and "high." Normally (when 24-hour ventilation is performed), the bathroom exhaust fan 13a operates at the "24-hour ventilation" setting. Furthermore, the bathroom ventilation fan 13a can be operated at either a "low" or "high" airflow setting by the user or other operator. Note that the guest room 10 does not necessarily need to be ventilated 24 hours a day using the bathroom ventilation fan 13a; for example, 24-hour ventilation could be performed using a dedicated ventilation fan. As described above, guest room 10 is a space used by different guests. During the period between a guest's check-out and the next guest's check-in (hereinafter referred to as the "changeover period"), cleaning staff perform preparation work for the changeover. This preparation work involves preparing the environment of guest room 10 so that the next guest can use it. This preparation work includes cleaning guest room 10. The disinfection system 20 is for disinfecting the guest rooms 10 of Hotel 1 during the room changeover period. More specifically, the disinfection system 20 disinfects the guest rooms 10 from the completion of the room changeover preparation work until the end of the room changeover period. As shown in Figure 1(b), the disinfection system 20 c