JP2022155798A - Sterilization system - Google Patents

Abstract

To provide a sterilization system capable of properly sterilizing a guest room.SOLUTION: There is provided a sterilization system 20 for sterilizing a guest room 10 during a replacement period of the guest room 10 of a hotel 1, the sterilization system comprising: sterilization means for sterilizing the guest room 10 and including, an ozone generator 21 which can discharge a gas-state sterilization component into the guest room 10; and a control part 22 for determining one operation pattern out of a plurality of preset operation patterns of the sterilization means, so as to complete sterilization of the guest room 10 within a residual period until the replacement period finishes, according to priority sequence based on a prescribed reference.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a technology of a sterilization system for sterilizing a space in a building that users alternately use.

Conventionally, techniques for sterilizing a space used by users in a building are known. For example, it is as described in Patent Document 1.

The ozone sterilization deodorizer described in Patent Literature 1 can release ozone from an ozone wind generating section provided in the apparatus main body. By installing the ozone sterilizing deodorizer in a guest room of a lodging facility (a space used by different users in the building), the guest room can be sterilized.

In accommodation facilities, check-out and check-in times differ from guest room to guest room, so it is necessary to disinfect the guest room appropriately according to the check-out time and the like. However, Patent Document 1 does not describe sterilization of the guest room. For this reason, there has been a demand for a technology capable of properly sterilizing guest rooms.

JP 2018-143581 A

The present invention has been made in view of the above situation, and the problem to be solved is to provide a sterilization system that can appropriately sterilize a space that is used by different users. is.

The problems to be solved by the present invention are as described above, and the means for solving the problems will now be described.

That is, in claim 1, there is provided a sterilization system that sterilizes a space in a building that is used by users in turn during a replacement period, and is capable of releasing a gaseous sterilization component into the space. A sterilization means for sterilizing the space, including a device, and a priority order based on predetermined criteria so that the sterilization of the space is completed during the remaining period until the end of the replacement period. and control means for determining one of a plurality of preset operation patterns of the sterilization means.

In claim 2, the determined operation pattern includes a first period in which the sterilization component is released into the space by operation of the sterilization device, and a period in which the operation of the sterilization device is stopped. The operation timing of the sterilization device is set so that the second period until the sterilization component released in the first period is discharged from the space or deactivated is included in the remaining period. It is what is done.

In claim 3, in the plurality of operation patterns, in the first period, the target component concentration of the space by the sterilizing component is set to a first concentration based on a predetermined environmental standard. and a second operation pattern in which the target component concentration is set to a second concentration higher than the first concentration, wherein the first operation pattern is the second operation pattern The priority is set higher than the above.

In claim 4, the sterilization means includes a ventilation fan that promotes discharge of the sterilization component released into the space, and the plurality of operation patterns include the first period and the second period. In at least one of the periods, a third operation pattern in which the ventilation fan is operated at a first air volume, and a fourth operation pattern in which the ventilation fan is operated at a second air volume smaller than the first air volume. The fourth operation pattern is set higher in priority than the third operation pattern.

In claim 5, the space is a guest room of an accommodation facility, the ventilation fan is provided in a unit bath section in the guest room, and the sterilization device is a space different from the unit bath section in the guest room. and the third operation pattern includes a sixth operation pattern in which the ventilation fan is operated at the first air volume over the first period and the second period. It is included.

In claim 6, the plurality of operation patterns include a seventh operation pattern that repeats the first period and the second period twice with a predetermined interval, and the seventh operation pattern is set higher in priority than other operation patterns.

In claim 7, the space is each guest room of an accommodation facility, and the control means includes at least information about the priority and information about the replacement period of each guest room Based on predetermined allocation information, One of the plurality of operation patterns is assigned to each cabin.

In claim 8, the allocation information includes information on the number of guest rooms in which replacement preparation work performed by the worker during the replacement period can be performed in the same time zone.

As effects of the present invention, the following effects are obtained.

In claim 1, it is possible to appropriately sterilize the space used by users in exchange.

In claim 2, it is possible to optimize the operation of the sterilization device.

In claim 3, it is possible to achieve both sterilization of the space and suppression of a relatively high component concentration of the sterilization component.

In claim 4, it is possible to achieve both sterilization of space and energy saving effect.

In claim 5, the sterilizing component can be quickly distributed throughout the guest room.

In claim 6, it is possible to make it easier for the worker to perform replacement preparation work in the space after the disinfection.

In claim 7, it is possible to appropriately assign one operation pattern to each passenger room so as to match each replacement period.

In claim 8, it is possible to assign one operation pattern to each cabin in consideration of replacement preparation work for workers.

(a) A floor map of a hotel to which the sterilization system according to the first embodiment of the present invention is applied. (b) A diagram showing a guest room and a sterilization system. The figure which shows an operation pattern. (a) A diagram showing a rapid pattern. (b) A diagram showing a rapid exhaust pattern. (a) A diagram showing a standard pattern. (b) A diagram showing a standard exhaust pattern. The figure which shows the guest room and disinfection system which concern on 2nd embodiment. The figure which shows the driving|running pattern which concerns on 2nd embodiment. The figure which shows a double sterilization pattern. A diagram showing check-in and check-out times for each guest room. The figure which shows the state which allocated the cleaning time. The figure which shows the state which the allocation of cleaning time and disinfection time was completed. (a) A diagram showing a guest room and a sterilization system according to a third embodiment. (b) A diagram showing a bathroom disinfection pattern.

Below, with reference to Drawing 1, composition of hotel 1 provided with sanitization system 20 concerning a first embodiment is explained.

The hotel 1 is an accommodation facility for a user (a person who uses the guest room 10) to stay. A hotel 1 is composed of a multi-story building. A hotel 1 is provided with a plurality of guest rooms 10 . In addition, in FIG. 1(a), the guest room 10 on the second floor of the hotel 1 is shown, and the guest rooms 10 on other floors are omitted.

The guest room 10 comprises a bedroom 11 , a passageway 12 and a unit bath section 13 . The bedroom 11 is provided with a bed 11a, a table 11b, and the like. The unit bath section 13 is partitioned with respect to the bedroom 11 and the corridor 12 . The unit bath section 13 is provided with a bathroom ventilation fan 13a. The bathroom ventilation fan 13a operates 24 hours a day to exhaust the air in the guest room 10 to the outside of the hotel 1. - 特許庁The guest room 10 is ventilated all day long by introducing outside air into the guest room 10 through a corridor or the like. The bathroom ventilation fan 13a is configured so that the air volume can be adjusted stepwise. More specifically, the bathroom ventilation fan 13a is configured to be adjustable to "24-hour ventilation", "weak" and "strong" in order from the stage with the lowest air volume. The bathroom ventilating fan 13a normally operates with an air volume of "24-hour ventilation" (in the case of 24-hour ventilation). Further, the bathroom ventilating fan 13a can be operated in the state of "weak" or "strong" air volume by the operation of the user or the like. The guest room 10 does not necessarily need to be ventilated 24 hours a day by the bathroom ventilation fan 13a.

The guest room 10 configured as described above is a space that users use alternately. In the guest room 10, a cleaning staff performs replacement preparation work during the period from when a user checks out until when the next user checks in (hereinafter referred to as "replacement period"). The replacement preparation work refers to the work of preparing the environment of the guest room 10 so that the next user can use the guest room 10 . The replacement preparation work includes the cleaning work of the guest room 10 .

The sterilization system 20 is for sterilizing the guest room 10 of the hotel 1 during the replacement period. More specifically, the sterilization system 20 sterilizes the guest room 10 after the replacement preparation work is completed and before the replacement period elapses. As shown in FIG. 1(b), the sterilization system 20 includes an ozone generator 21 and a controller 22. As shown in FIG.

The ozone generator 21 is for generating a gaseous sterilizing component. A sterilizing component as used herein refers to a substance capable of killing bacteria or inactivating viruses. Moreover, the gaseous state refers to a state in which it can move along the flow of air. The ozone generator 21 can generate ozone as a disinfecting component. The ozone generator 21 is installed on the ceiling of the bedroom 11 and can release the generated ozone to the guest room 10 . The ozone generator 21 is provided in each passenger room 10 .

The control unit 22 is for controlling devices for sterilizing each guest room 10 (in the first embodiment, the bathroom ventilation fan 13a and the ozone generator 21). The control unit 22 includes an arithmetic processing device such as a CPU, a storage device such as a RAM and a ROM, and the like. Further, the control unit 22 stores various programs and the like for operating the sterilization system 20 in the storage device. The control unit 22 is configured to be able to communicate with a terminal (not shown) owned by a cleaning staff and/or an administrator, and can acquire the check-out time (scheduled time) of the guest room 10 from the terminal. The control unit 22 is configured to be capable of transmitting signals to the bathroom ventilation fan 13 a and the ozone generator 21 of each guest room 10 .

By transmitting a signal to the bathroom ventilation fan 13a, the control unit 22 can switch between starting and stopping the operation (operation) of the bathroom ventilation fan 13a and adjust the air volume. In addition, by transmitting a signal to the ozone generator 21, the control unit 22 can switch between starting and stopping the operation (operation) of the ozone generator 21 and adjust the amount of ozone generated. The control unit 22 can arbitrarily adjust the ozone concentration in the cabin 10 by adjusting the amount of ozone generated. The control unit 22 operates the ozone generator 21 to emit ozone into the cabin 10, thereby inactivating pathogens in the cabin 10 (killing bacteria or decomposing viruses to reduce the infectivity of pathogens. lost), and the guest room 10 can be sterilized.

Below, the outline of disinfection of the guest room 10 by the disinfection system 20 (control unit 22) will be described.

The sterilization of the guest room 10 by the sterilization system 20 is triggered by an instruction from the cleaning staff. More specifically, when the cleaner and/or the manager completes the replacement preparation work, the terminal is operated to input the check-in time of the guest room 10 to the control unit 22 . The control unit 22 controls the ozone generator 21 and the like so that disinfection of the guest room 10 is completed by the input check-in time. More specifically, the control unit 22 controls the ozone generator 21 so that the CT value (Concentration-Time Value) and the ozone concentration in the cabin 10 satisfy predetermined conditions until the sterilization of the cabin 10 is completed. etc.

Specifically, the CT value is the product of ozone concentration (ppm) and exposure time (min). Note that the exposure time refers to the time during which the object is exposed to ozone. By obtaining the CT value, it is possible to grasp to what extent pathogens have been inactivated. For example, when the CT value is 60, it can be determined that 90% or more of the predetermined pathogen has been inactivated. Such a relationship between the CT value and the rate at which pathogens can be inactivated is appropriately determined for each pathogen by experiments or the like.

The control unit 22 presets a target CT value (for example, 60) based on the relationship of the pathogens to be inactivated. The control unit 22 controls the ozone generator 21 and the like so that the CT value reaches a target value (to satisfy a predetermined condition) by the time the sterilization of the cabin 10 is completed.

Moreover, ozone may be harmful to the human body depending on its concentration. In consideration of such effects on the human body, working environment standards (standards that are desirable to be maintained) have been established for ozone concentration. Specifically, 0.1 ppm is defined as a work environment standard. When sterilizing the cabin 10, the control unit 22 reduces the ozone concentration of the cabin 10 to below the work environment standard (to satisfy a predetermined condition). Specifically, the controller 22 reduces the ozone concentration to 0.05 ppm or less. Hereinafter, the ozone concentration (0.05 ppm) when sterilization by ozone is completed is referred to as "completion ozone concentration".

In this way, when sanitizing the cabin 10, the control unit 22 causes the CT value to reach the target value and lowers the ozone concentration in the cabin 10 to the ozone concentration at completion or below. As a result, the control unit 22 inactivates the pathogen and enables the user to enter the guest room 10 . As shown in FIG. 2 , the control unit 22 is configured to be able to execute a plurality of operation patterns P10 as processing for disinfecting the cabin 10 .

The operation pattern P10 will be described below with reference to FIGS. 2 to 4. FIG.

The operation pattern P10 refers to the process of controlling the bathroom ventilation fan 13a and the ozone generator 21 as predetermined. The operation pattern P10 includes a rapid pattern P11, a rapid exhaust pattern P12, a standard pattern P13, and a standard exhaust pattern P14. 3 and 4 show the results of simulating the relationship between the ozone concentration in the cabin 10 and time when the execution of the rapid pattern P11 or the like is started at 11:40.

The rapid pattern P11 shown in FIGS. 2 and 3(a) is a pattern in which sterilization by ozone is completed in a relatively short period of time (compared to the standard pattern P13, etc., which will be described later). In the rapid pattern P11, the CT value reaches the target value in a short time by increasing the ozone concentration in the cabin 10 to a relatively high concentration. Specifically, when the rapid pattern P11 is executed, the control unit 22 starts the operation of the ozone generator 21 (at 11:40 in FIG. 3A), releases ozone into the cabin 10, Increase concentration. The control unit 22 continues the release of ozone for a predetermined period of time to increase the concentration of ozone in the cabin 10 to a predetermined concentration. Specifically, the control unit 22 increases the ozone concentration to approximately 1 ppm so as not to greatly exceed the working environment standard (0.1 ppm). Hereinafter, the time period during which ozone is released into the cabin 10 is referred to as "inactivation time period". Further, the ozone concentration (target concentration) to be increased during the deactivation time in the rapid pattern P11 and the rapid exhaust pattern P12, which will be described later, will be referred to as "first target concentration".

When the ozone concentration in the cabin 10 is increased to the first target concentration, the control unit 22 stops the ozone generator 21 (at 12:50 in FIG. 3(a)) and lowers the ozone concentration in the cabin 10 . When the control unit 22 lowers the ozone concentration in the cabin 10 to the ozone concentration at the time of completion or less (at 14:10 in FIG. 3A), the rapid pattern P11 ends. Hereinafter, the time from when the ozone generator 21 is stopped to when the ozone concentration is decreased to the ozone concentration at the time of completion or less is referred to as "standby time". Also, the sum of the inactivation time and the standby time (the time from the start to the end of the operation pattern P10) is referred to as "total time".

なお、上記数式１のＣは、客室１０のオゾン濃度［ｐｐｍ］である。Ｃ_０は、初期オゾン濃度［ｐｐｍ］である。Ｒは、気積［ｍ^３］である。ｎは、換気回数［回／ｈｏｕｒ］である。ｔは、タイムステップ［ｈｏｕｒ］である。Ｍは、オゾン発生量［ｍｇ／ｈｏｕｒ］である。Ｔは、半減期［ｈｏｕｒ］である。 In the rapid pattern P11, the deactivation time and the standby time are set in advance so that the CT value reaches the target value during the standby time and the ozone concentration in the cabin 10 is equal to or lower than the ozone concentration at the time of completion. Specifically, the deactivation time and the like are set by simulating the rapid pattern P11 using Equation 1 below.

Note that C in Equation 1 above is the ozone concentration [ppm] in the cabin 10 . _C0 is the initial ozone concentration [ppm]. R is the air volume [m ³ ]. n is the ventilation frequency [times/hour]. t is the time step [hour]. M is the ozone generation amount [mg/hour]. T is the half-life [hour].

When simulating the rapid pattern P11 using Equation 1 above, the volume of the cabin 10 is substituted for the air volume R. Also, the ventilation frequency in the 24-hour ventilation of the cabin 10 is substituted for the ventilation frequency n. Also, the amount of ozone generated by the ozone generator 21 is substituted for the generated amount M of ozone. Also, the value of the half-life of ozone in the cabin 10 is substituted for the half-life T.

In Equation 1 above, the ozone concentration is calculated in consideration of the influence of 24-hour ventilation in the cabin 10 . Specifically, as described above, the guest room 10 is ventilated all day long by the bathroom ventilation fan 13a. Therefore, when ozone is emitted into the guest room 10, part of the ozone is sucked by the bathroom ventilation fan 13a and discharged out of the guest room 10, and outside air is introduced into the guest room 10, resulting in a decrease in the ozone concentration in the guest room 10. It will happen. In the above formula 1, the ozone concentration of the outside air is assumed to be 0 ppm, and the influence of the 24-hour ventilation (degree of decrease in ozone concentration during the period determined by the time step t) is calculated by "C ₀ *R/R + nRt". ing.

Further, in the above formula 1, the theoretical value of the ozone concentration (the theoretical value of the ozone concentration that increases due to the operation of the ozone generator 21) is obtained by "M/R*2.14". By summing the theoretical value of the ozone concentration and the influence of 24-hour ventilation (C ₀ *R/R+nRt), the ozone concentration when ozone is emitted while operating the bathroom ventilation fan 13a is obtained. The combined results do not reflect the effects of natural ozone depletion (deactivation).

Therefore, in Equation 1 above, the ozone concentration in the cabin 10 is obtained by multiplying the above sum by "(1/2) ^t/T ", taking into consideration the effects of 24-hour ventilation and natural reduction.

FIG. 3(a) shows the results obtained by simulating the rapid pattern P11 using Equation 1 above and determining the inactivation time and standby time of the rapid pattern P11. In FIG. 3(a), the operation of the ozone generator 21 is started at 11:40, and the ozone concentration in the cabin 10 rises to the first target concentration (approximately 1 ppm) at 12:50 ("deactivation time”). Further, in FIG. 3A, the operation of the ozone generator 21 is stopped at this timing, and the ozone concentration is reduced to the completion ozone concentration (0.05 ppm) or less at 14:10 ("waiting time"). reference). In FIG. 3A, the area (CT value) of the graph in the range from 11:40 to 14:10 exceeds the target value.

As shown in FIGS. 2 and 3(a), in the rapid pattern P11, the inactivation time (11:40 to 12:50 in FIG. 3(a)) is " 70 minutes”. Also, the standby time (12:50 to 14:10 in FIG. 3A) is set to "80 minutes". Thus, the total time of the rapid pattern P11 is "150 minutes".

The rapid exhaust pattern P12 shown in FIGS. 2 and 3B is a pattern in which sterilization by ozone is performed in a shorter time than the rapid pattern P11. The rapid exhaust pattern P12 is different from the rapid pattern P11 in that the bathroom ventilation fan 13a is operated at an air volume ("strong") greater than that of the "24-hour ventilation" during the standby time.

FIG. 3(b) shows the results obtained by simulating the rapid exhaust pattern P12 using Equation 1 above and determining the deactivation time and standby time of the rapid exhaust pattern P12. In the rapid exhaust pattern P12, the ozone is sucked into the bathroom ventilation fan 13a with the "strong" air volume during the standby time, and is urged to be discharged out of the guest room 10, and the ozone concentration is completed in a shorter time than in the rapid pattern P11. It is as follows. Therefore, as shown in FIGS. 2 and 3, the standby time of the rapid exhaust pattern P12 is set to "40 minutes", which is shorter than that of the rapid pattern P11. The inactivation time of the rapid exhaust pattern P12 is set to "70 minutes", which is the same as the rapid pattern P11. Thus, the total time for the rapid exhaust pattern P12 is "110 minutes". When simulating the rapid exhaust pattern P12 with Equation 1 above, when calculating the ozone concentration during the standby time, the ventilation frequency when the air volume of the bathroom ventilation fan 13a is "strong" is substituted for the ventilation frequency n.

A standard pattern P13 shown in FIGS. 2 and 4A is a pattern in which sterilization is performed with an ozone concentration lower than that of the rapid pattern P11 and the rapid exhaust pattern P12. When the standard pattern P13 is performed, the control unit 22 causes the passenger compartment 10 to emit ozone to increase the ozone concentration in the passenger compartment 10 to a concentration lower than the first target concentration (the concentration increased by the rapid pattern P11 or the like). Then, the control unit 22 appropriately adjusts the amount of ozone generated and maintains the ozone concentration for a predetermined time (see the deactivation time shown in FIG. 4A).

After maintaining the ozone concentration for a predetermined time, the control unit 22 stops the operation of the ozone generator 21 and makes the ozone concentration in the cabin 10 equal to or lower than the ozone concentration at the time of completion (see the waiting time shown in FIG. 4(a)). In the standard pattern P13, the CT value reaches the target value by maintaining the ozone concentration during the deactivation time. According to the standard pattern P13, the cabin 10 can be sterilized with an ozone concentration that has less influence on the human body than the rapid pattern P11. Hereinafter, the ozone concentration (target concentration) maintained during the deactivation time in the standard pattern P13 and the standard exhaust pattern P14, which will be described later, will be referred to as "second target concentration".

The second target concentration is set based on the working environment standard (0.05 ppm) and the first target concentration (about 1 ppm). Specifically, it is set to 0.5 ppm, which is intermediate between the working environment standard and the first target concentration.

FIG. 4(a) shows the results obtained by simulating the standard pattern P13 using Equation 1 above and determining the inactivation time and standby time of the standard pattern P13. In the standard pattern P13, the ozone concentration in the cabin 10 is maintained at the second target concentration lower than the first target concentration. Therefore, as shown in FIGS. 2 and 4A, the inactivation time for the standard pattern P13 is set to "130 minutes", which is longer than the rapid pattern P11 and the rapid exhaust pattern P12. Also, the standby time is set to "50 minutes", which is shorter than the rapid pattern P11 and the rapid exhaust pattern P12. Thus, the total time for the standard pattern P13 is "180 minutes". When simulating the standard pattern P13 using Equation 1 above, a value necessary to maintain the second target concentration is appropriately substituted for the generated ozone amount M at the timing of maintaining the ozone concentration.

The standard exhaust pattern P14 shown in FIGS. 2 and 4(b) is a pattern in which sterilization by ozone is performed in a shorter time than the standard pattern P13. The standard exhaust pattern P14 differs from the standard pattern P13 in that the bathroom ventilator 13a is operated at an air volume ("strong") greater than that of the "24-hour ventilation" during the standby time.

FIG. 4(b) shows the results obtained by simulating the standard exhaust pattern P14 using Equation 1 above and determining the deactivation time and standby time of the standard exhaust pattern P14. In the standard exhaust pattern P14, the air volume of the bathroom ventilation fan 13a increases during the standby time. Therefore, as shown in FIGS. 2 and 4, the standby time of the standard exhaust pattern P14 is set to "30 minutes", which is shorter than that of the standard pattern P13. Also, the inactivation time is set to "130 minutes", which is the same as the standard pattern P13. Thus, the total time for the standard exhaust pattern P14 is "160 minutes". When simulating the standard exhaust pattern P14 with Equation 1 above, when calculating the ozone concentration during the standby time, the ventilation frequency when the air volume of the bathroom ventilation fan 13a is "strong" is substituted for the ventilation frequency n.

The control unit 22 presets a priority order for the operation pattern P10 configured as described above. The priority is an index indicating the degree of priority of execution of the driving pattern P10. In terms of priority, the higher order (higher order) is preferentially executed. The control unit 22 sets the priority based on the effects of ozone on the human body and the amount of energy consumption. Further, the control unit 22 prioritizes the effects on the human body among the effects on the human body and the amount of energy consumption, and sets the order of priority.

Specifically, the standard pattern P13 and the standard exhaust pattern P14 perform sterilization at a second target concentration lower than that of the rapid pattern P11 and the rapid exhaust pattern P12. can reduce the impact of Further, in the standard pattern P13, the air volume of the bathroom ventilation fan 13a is smaller than in the standard exhaust pattern P14, so the energy consumption is smaller than in the standard exhaust pattern P14. The control unit 22 sets "1" as the priority of the standard pattern P13, which has less impact on the human body and consumes less energy, among the operation patterns P10. Further, the control unit 22 sets "2" as the priority of the standard exhaust pattern P14, which has a small effect on the human body.

Further, the control unit 22 sets "3" as the priority of the rapid pattern P11, which has a low air volume (energy consumption) of the bathroom ventilation fan 13a, among the rapid pattern P11 and the rapid exhaust pattern P12. Also, the control unit 22 sets the priority of the remaining rapid exhaust pattern P12 to "4".

The operation of the sterilization system 20 will be described below.

The sterilization system 20 operates when the cleaning staff and/or the manager who have finished the replacement preparation work (cleaning work) input the check-in time. When the check-in time is input, the control unit 22 calculates the remaining time until check-in (the remaining period until the replacement period ends) based on the input result and the current time. Then, the control unit 22 determines one operation pattern to be executed from among the operation patterns P10 shown in FIG. 2 based on the remaining time and priority.

For example, if the remaining time is "160 minutes", the control unit 22 executes the operation pattern that can complete sterilization during the remaining time and has the highest priority. Specifically, the standard exhaust pattern P14, which has the highest priority among the operation patterns P10 in which the total time is 160 minutes or less, is executed.

Further, for example, when the remaining time is "180 minutes" or more, the control unit 22 executes the standard pattern P13 with the highest priority.

If there is no operation pattern P10 that can be executed during the remaining time (if the remaining time is shorter than the total time of the rapid exhaust pattern P12 that enables sterilization at the fastest speed), the control unit 22 uses ozone below the working environment standard. The ozone generator 21 is always operated at the concentration.

Further, if the operation of the bathroom ventilation fan 13a cannot be controlled due to the specifications of the bathroom ventilation fan 13a (the rapid exhaust pattern P12 and the standard exhaust pattern P14 cannot be executed), the control unit 22 determines the standard pattern based on the remaining time and priority. An operation pattern to be executed is determined from P13 and rapid pattern P11. For example, if the remaining time is "180 minutes" or more, the control unit 22 executes the standard pattern P13. Further, when the remaining time is "150 minutes" or more and less than "180 minutes", the control unit 22 executes the rapid pattern P11. If the remaining time is less than "150 minutes", the ozone generator 21 is always operated with the ozone concentration below the work environment standard.

Thus, in the sterilization system 20, if the check-in time is input to the control unit 22, the ozone generator 21 can be operated so that sterilization is completed by the check-in time. As a result, it is possible to easily (with a simple operation) sterilize the guest rooms 10 whose check-out and check-in times are different depending on the day. This makes it possible to easily disinfect the guest room 10 . In addition, it is possible to deodorize the cabin 10 with ozone.

Further, the control unit 22 can sterilize the cabin 10 with an appropriate operation pattern according to the effect of ozone on the human body and the amount of energy consumption by executing one operation pattern according to the priority.

In addition, the control unit 22 obtains the deactivation time and the waiting time such that the CT value reaches the target value and the ozone concentration in the cabin 10 becomes equal to or lower than the ozone concentration at the time of completion by simulation using Equation 1 above. . This allows the inactivation time and waiting time to be obtained easily (without experimentation).

As described above, the sterilization system 20 according to the first embodiment is a sterilization system 20 that sterilizes the guest rooms 10 of the hotel 1 during the replacement period of the guest rooms 10 (spaces used by users in the building). sterilization means for sterilizing the guest room 10 (ozone generator 21 and Bathroom ventilation fan 13a) and the room 10 are sterilized in the remaining period until the end of the replacement period, and according to the priority based on predetermined criteria (effect on the human body and energy consumption), and a control unit 22 (control means) that determines one of a plurality of operation patterns P10 of the sterilization means set in advance.

By configuring in this way, the guest room 10 can be appropriately sterilized according to a predetermined standard. In addition, the guest room 10 can be easily sterilized.

Further, the determined operation pattern includes a first period (inactivation time) during which the sterilizing component is discharged into the passenger compartment 10 by operation of the ozone generator 21, and a period of operation of the ozone generator 21. and a second period (waiting time) until the sterilizing component released in the first period is discharged or inactivated from the cabin 10 by the stop, and the remaining period includes the The operation timing of the ozone generator 21 is set.

By configuring in this way, pathogens are inactivated by the sterilizing component, and the concentration of the sterilizing component in the cabin 10 is reduced during the remaining period, so that the operation of the ozone generator 21 can be optimized.

Further, in the plurality of operation patterns P10, in the first period, the target component concentration of the cabin 10 by the sterilizing component is a first concentration (second target concentration), and the target component concentration is set to a second concentration (first target concentration) higher than the first concentration. A second operation pattern (rapid pattern P11 and rapid exhaust pattern P12) is included, and the first operation pattern is set higher in priority than the second operation pattern ( Figure 2).

By configuring in this way, the first operation pattern in which sterilization is performed in a state in which the concentration of the sterilization component in the passenger compartment 10 is low is preferentially executed, and the sterilization of the passenger compartment 10 and the sterilization component are relatively high. It is possible to achieve compatibility with suppressing the component concentration.

In addition, the hotel 1 which concerns on 1st embodiment is one form of implementation of the building which concerns on this invention.
Moreover, the guest room 10 which concerns on 1st embodiment is one form of implementation of the space which the user who concerns on this invention changes and uses.
Also, the ozone generator 21 according to the first embodiment is an embodiment of the sterilization apparatus according to the present invention.
Further, the ozone generator 21 and the bathroom ventilation fan 13a according to the first embodiment are an embodiment of the sterilization means according to the present invention.
Also, the control unit 22 according to the first embodiment is an embodiment of the control means according to the present invention.

Although the first embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, although the sterilization system 20 is applied to the hotel 1, it is not limited to this, and may be applied to lodging facilities other than the hotel 1, such as inns. Also, the sterilization system 20 may be applied to buildings other than accommodation facilities. In addition, the sterilization system 20 only needs to sterilize the space that the user changes and uses. good.

Also, although the disinfection of the guest room 10 is performed by ozone, the disinfection component is not particularly limited as long as it can inactivate pathogens. The sterilizing component may be, for example, ions, hypochlorous acid, or the like. It is desirable that the sterilizing component has a high sterilizing effect, such as ozone as in the first embodiment. According to this, the sanitization of the guest room 10 can be performed in a short time.

In addition, although the ozone generator 21 is always installed in the passenger compartment 10, it is not limited to this. can be anything.

Further, the place where the ozone generator 21 is installed is not limited to the bedroom 11, and may be installed in the corridor 12 or the unit bath section 13, for example.

Further, the number of operation patterns P10 is not particularly limited, and an appropriate number of operation patterns P10 may be set according to the volume of the cabin 10 or the like.

Also, the values of the deactivation time and the standby time in the operation pattern P10 are not particularly limited, and may be changed as appropriate depending on the volume of the cabin 10, the specifications of the ozone generator 21, and the like.

Also, in the operation pattern P10, the CT value reaches the target value during the standby time, but the timing at which the CT value reaches the target value can be any timing in the total time. For example, the CT value may reach the target value at the timing when the inactivation time ends.

Moreover, although the inactivation time and the waiting time are set based on the simulation result of the above Equation 1, they are not limited to this, and may be set based on the results of experiments or the like.

In addition, the control unit 22 sets the priority by taking into consideration the effect of ozone on the human body prior to the amount of energy consumption, but how the priority is set is not particularly limited. For example, the rapid exhaust pattern P11 and the standard pattern P13 that do not change the air volume of the bathroom ventilation fan 13a to "strong" are higher than the rapid exhaust pattern P12 and the standard exhaust pattern P14 that change the air volume of the bathroom ventilation fan 13a to "strong". can be given priority.

Thus, the sterilization means includes the bathroom ventilation fan 13a (ventilation fan) that promotes the discharge of the sterilization component (ozone) released into the guest room 10, and the plurality of operation patterns P10 include the first A third operation pattern (rapid Exhaust pattern P12 and standard exhaust pattern P14), and a fourth operation pattern (rapid pattern P11 and standard pattern P11 and standard pattern P13), and the fourth operation pattern is set higher in priority than the third operation pattern.

By configuring in this way, the second operation pattern, which consumes less energy, is preferentially executed, and both the sterilization of the passenger cabin 10 and the energy saving effect can be achieved.

Further, although the control unit 22 determines the driving pattern by inputting the check-in time, the driving pattern is not limited to this, and the driving pattern may be determined by inputting other information. For example, the control unit 22 may determine the operation pattern when information notifying the end of the cleaning work is input from the terminals of the cleaning staff and/or the manager. In this case, the control unit 22 can acquire the check-in time from a server or the like provided in the hotel 1 and determine the driving pattern based on the acquired result. With such a configuration, the cleaning staff and/or the manager can save the trouble of confirming the check-in time of the guest room 10, and the guest room 10 can be sterilized with a simpler operation.

Next, a sterilization system 120 according to a second embodiment will be described with reference to FIGS. 5 to 10. FIG.

The sterilization system 120 according to the second embodiment is similar to the first embodiment in that it creates a work schedule S (see FIG. 10) and can execute the double sterilization pattern P25 (see FIG. 7). It differs greatly from the sterilization system 20 . The work schedule S is information indicating the schedule of work (replacement preparation work and sterilization work) to be performed in the guest room 10 during the replacement period for each guest room 10 . Below, the said difference is demonstrated.

First, the configuration regarding creation of the work schedule S will be described. A control unit 122 of the sterilization system 120 according to the second embodiment shown in FIG.

The management system 130 manages information on the hotel 1 . The management system 130 is constructed in a predetermined server, for example. Various information is input to the management system 130 from a terminal or the like provided at the front desk of the hotel 1 . For example, the check-in and check-out times of each guest room 10, information on users (for example, the number, age, address, etc. of users who plan to stay in the guest room 10), and the scheduled working hours of cleaning staff who perform cleaning work. is entered.

The management system 130 can create information about the replacement period of each guest room 10 based on input results such as check-in time. The information about the replacement period refers to information that allows determination of the replacement period for each guest room 10 . FIG. 8 shows an example of the information. The time information shown in FIG. 8 includes whether or not the user is currently using the guest room 10 (before checking out), and whether or not the next user is scheduled to use the guest room 10 (scheduled to check in). , and the identification information of the guest room 10 (room number in FIG. 8).

The control unit 122 can receive information necessary for creating the work schedule S from the management system 130 configured as described above. Specifically, the control unit 122 can receive the time information shown in FIG. 8, information about users (the number of users, ages, addresses, etc.), and scheduled working hours of cleaning staff. The control unit 122 can calculate the maximum number of guest rooms that can be cleaned in the same time period (hereinafter referred to as the “maximum number of cleanings”) based on the reception result of the scheduled working hours. Also, the control unit 122 can evaluate the possibility of being infected with an infectious disease (infection risk) in each guest room 10 based on the reception result of the information about the user. Further, as will be described later, the control unit 122 stores the cleaning time (the time period for performing replacement preparation work), the sterilization time (the time period for sterilizing the cabin 10 with ozone), and the operation to be executed in the time information shown in FIG. By assigning the pattern P20, the work schedule S shown in FIG. 10 can be created. Further, the control unit 122 can present the work schedule S to the people involved in the hotel 1 by displaying the created work schedule S on a predetermined display device.

Next, the double sterilization pattern P25 will be described. As shown in FIG. 6, the operation pattern P20 of the second embodiment includes the double sterilization pattern P25 in addition to the operation pattern P10 (rapid pattern P11, etc.) according to the first embodiment.

The double sterilization pattern P25 shown in FIGS. 6 and 7 is a pattern in which the guest room 10 is sterilized before and after the cleaning work (performed twice in total). FIG. 7 shows the results of a simulation of the double sterilization pattern P25 using Equation 1 above. When executing the twice sterilization pattern P25, the control unit 122 sterilizes the passenger compartment 10 twice using the rapid exhaust pattern P12 (see FIG. 3B). More specifically, the control unit 122 performs the first sterilization (rapid exhaust pattern P12) (from 11:00 to 12:50 in FIG. 7) and waits until a predetermined time elapses (see FIG. 7 from 12:50 to 13:10). Then, the control unit 122 performs the second sterilization (from 13:10 to 15:00 in FIG. 5). Thus, the double sterilization pattern P25 includes two inactivation times and two waiting times (repeated twice).

In the double sterilization pattern P25, during standby (between the first sterilization and the second sterilization), the ozone concentration in the guest room 10 is equal to or lower than the completed ozone concentration. Therefore, in the double sterilization pattern P25, the cleaning work of the guest room 10 can be performed during standby (see "cleaning time" shown in FIG. 7). The control unit 122 can arbitrarily set the length of time to wait. In this way, the total time of the double sterilization pattern P25 is the sum of the two inactivation times and the two waiting times plus the cleaning work (waiting time).

The control unit 122 sets the priority of the operation pattern P20 including the double sterilization pattern P25 based on the infection risk of the cleaning staff to an infectious disease, the effect of ozone on the human body, and the amount of energy consumption. In addition, the control unit 122 prioritizes the infection risk among the infection risk, the effect on the human body, and the amount of energy consumption, and sets the order of priority.

Specifically, in the twice sterilization pattern P25, the guest room 10 is sterilized before and after the cleaning work. Therefore, the double sterilization pattern P25 can reduce the infection risk of the cleaning staff more than the rapid pattern P11, the rapid exhaust pattern P12, the standard pattern P13, and the standard exhaust pattern P14 in which sterilization is performed after the cleaning work. In this way, the double sterilization pattern P25 is a pattern that can most reduce the risk of infection among the operation patterns P20. The control unit 122 sets the priority of the double sterilization pattern P25 to "1", which is the highest priority.

Further, the control unit 122 prioritizes the remaining rapid pattern P11, rapid exhaust pattern P12, standard pattern P13, and standard exhaust pattern P14 based on the effects on the human body and energy consumption, as in the first embodiment. set. Specifically, the control unit 122 sets the priority of the standard pattern P13 to "2". Further, the control unit 122 sets the priority of the standard exhaust pattern P14 to "3". Also, the control unit 122 sets the priority of the rapid pattern P11 to "4". Further, the control unit 122 sets the priority of the rapid exhaust pattern P12 to "5".

Below, the creation processing of the work schedule S by the control unit 122 will be described.

The process of creating the work schedule S is performed in advance (before the user checks out). When starting the creation process, the control unit 122 receives information necessary for creating the work schedule S (the time information shown in FIG. 8, the information about the user, and the cleaning staff's scheduled work hours) from the management system 130 . The control unit 122 calculates the maximum cleaning number for each time period. Also, the control unit 122 calculates the replacement period (time from check-out to check-in) for each guest room 10 based on the time information shown in FIG.

Then, the control unit 122 allocates the cleaning time to each guest room 10 so that the cleaning work is completed within the calculated replacement period. At this time, the control unit 122 allocates the cleaning time in consideration of the sterilization of the guest room 10 . After that, the control unit 122 assigns an operation pattern with a higher priority and assigns a sterilization time according to the operation pattern. The allocation of cleaning time, sterilization time and operation pattern will be described below.

The allocation of cleaning time is described below. It should be noted that 2 hours of cleaning time will be allocated, except for exceptions, in consideration of the burden on the cleaning staff. In addition, an exceptionally one-hour cleaning time shorter than two hours (a time during which the cleaning work can be completed on schedule without overburdening the cleaning staff) shall be allocated.

First, the flow of allocating the cleaning time will be described. The control unit 122 provisionally allocates the cleaning time according to the replacement period of the guest rooms 10 . Then, the control unit 122 adjusts the cleaning time based on the maximum number of cleanings so that the cleaning is completed within the replacement period. In this way, the control unit 122 completes the allocation of the cleaning time. The flow of allocating the cleaning work will be specifically described below.

When temporarily allocating cleaning time, the control unit 122 determines whether the replacement period of the guest rooms 10 is 6 hours or longer. The control unit 122 temporarily allocates the cleaning time so that the guest room 10 can be sterilized by the two-time sterilization pattern P25 with the highest priority when the replacement period of the guest room 10 is 6 hours or longer. Specifically, in the two-time sterilization pattern P25, which has the highest priority, 110 minutes are required for one sterilization. Therefore, when allocating a cleaning time of two hours to the time information shown in FIG. 8, the control unit 122 allocates the cleaning time two hours after the check-out time to the guest rooms 10 whose replacement period is six hours or longer (see FIG. 8). See Room 201 shown on 9). As a result, it is possible to secure two hours of free time before and after the cleaning time, and to allocate the cleaning time so that the guest room 10 can be sterilized by the two-time sterilization pattern P25 having the highest priority.

On the other hand, when the replacement period of the guest room 10 is less than 6 hours, the control unit 122 temporarily allocates the cleaning time so that the guest room 10 can be disinfected with the standard pattern P13 or the like having the second priority or lower. Specifically, if the replacement period is less than 6 hours, if a cleaning time of 2 hours is allocated, 2 hours of free time cannot be secured before and after the cleaning time, so it is not necessary to execute the sterilization pattern P25 twice. . For this reason, the control unit 122 allocates two hours of cleaning time immediately after checkout when the replacement period of the guest rooms 10 is less than six hours. In this way, the control unit 122 lengthens the time from the end of the cleaning time to the check-in time as much as possible, and allocates the cleaning time so that the guest room 10 can be sterilized by the operation pattern (standard pattern P13, etc.) with the highest priority. .

Note that if two hours of cleaning time are assigned to the guest room 10 whose replacement period is three hours, the free time after the cleaning time will be one hour, and the rapid exhaust pattern P12 ( 110 minutes) cannot be assigned, and thus the operation pattern cannot be assigned. Therefore, the control unit 122 allocates a cleaning time of 1 hour (lower limit of cleaning time) as an exception to the guest room 10 whose replacement period is 3 hours, and secures 2 hours of free time after the cleaning time. In this way, the control unit 122 provisionally allocates the cleaning time so that the operation pattern can be allocated even to the guest room 10 whose replacement period is 3 hours. Note that if the replacement period is two hours or less, even if one hour of cleaning time is assigned, the operation pattern cannot be assigned. Therefore, if the replacement period is two hours or less, the control unit 122 allocates cleaning time (maximum of two hours) to the entire replacement period. Also, in this case, the control unit 122 always operates the ozone generator 21 at an ozone concentration equal to or lower than the working environment standard.

After provisionally assigning the cleaning time in this manner, the control unit 122 adjusts the cleaning time. Specifically, the control unit 122 compares the number of guest rooms 10 to which the cleaning time is assigned and the maximum number of cleanings for each time zone, and adjusts the cleaning time when the number of guest rooms 10 exceeds the maximum number of cleanings. do. At this time, the control unit 122 determines a part of the guest rooms 10 to which the cleaning time is adjusted from among the guest rooms 10 to which the cleaning time is allocated exceeding the maximum number of cleanings based on a predetermined standard. Then, the control unit 122 adjusts the cleaning time so that the determined cleaning time for the guest room 10 does not overlap with the time period exceeding the maximum number of cleanings.

For example, when the number of guest rooms 10 exceeds the maximum number of cleanings, the control unit 122 evaluates the infection risk of the cleaning staff in the guest rooms 10, and based on the evaluation result (predetermined criteria), the double sterilization pattern P25 among the guest rooms 10 in which the above can be performed, the cleaning time of the guest room 10 with a low risk of infection is staggered.

Specifically, the guest room 10 with a small number of checked-out users has a lower probability (infection risk) that a virus is brought into the guest room 10 than a guest room 10 with a large number of users. In addition, the guest room 10 checked out by a user from an area where the infectious disease is not spreading has a higher probability that the virus was brought into the guest room 10 than the guest room 10 checked out by a user from an area where the infectious disease is spreading. lower. The control unit 122 evaluates the infection risk as described above from the information on the user, and cleans the guest room 10 that has a low infection risk and is capable of executing the double sterilization pattern P25 (with a replacement period of 6 hours or more). shift time. In this way, as shown in FIG. 9, the control unit 122 maintains a state in which the double sterilization pattern P25 can be executed in the guest rooms 10 with a high infection risk, and prevents the number of guest rooms 10 from exceeding the maximum number of cleanings ( Adjust the cleaning time (so that the cleaning work is completed within the replacement period) and complete the cleaning time allocation.

Next, allocation of sterilization time and operation pattern will be described. After completing the allocation of the cleaning time, the control unit 122 can execute the operation pattern with the highest priority in the time (idle time) other than the cleaning time in the replacement period. , to assign a sterilization time and operation pattern to each cabin 10 . Specifically, when there is a free time of two hours or more before and after the disinfection time, the control unit 122 assigns the two-time disinfection pattern P25 with the highest priority and removes two hours before and after the cleaning time. Allocate fungus time. On the other hand, if there is no vacant time of two hours or more before and after the cleaning time, the control unit 122 assigns an operation pattern with the second or lower priority according to the vacant time after the cleaning time, and determines the total time of the operation pattern. Allocate disinfection time according to

The control unit 122 allocates the cleaning time, the sterilization time, and the like in this way, and creates the work schedule S shown in FIG. The work schedule S is displayed on a predetermined display device.

In this way, the control unit 122 sets (assigns) the cleaning time, the sterilization time, and the operation pattern at a stage prior to checkout, so that the cleaning and sterilization of each guest room 10 can be completed during the replacement period. information (work schedule S) can be presented. Thereby, each guest room 10 can be appropriately cleaned and disinfected.

In addition, the guest room 10 can be sterilized with the optimum operation pattern P20 (one operation pattern in which sterilization is completed during the sterilization time and has the highest priority) according to the allocated sterilization time.

As described above, in the plurality of operation patterns P20 of the second embodiment, the first period (inactivation time) and the second period (waiting time) are repeated twice with a predetermined period of time. , and the seventh operation pattern is given priority over other operation patterns (rapid pattern P11, rapid exhaust pattern P12, standard pattern P13, and standard exhaust pattern P14). The order is set high (Fig. 6).

By configuring in this way, the seventh operation pattern (double sterilization pattern P25) is preferentially executed, making it easier for cleaning staff to perform replacement preparation work (cleaning work) in the guest room 10 after sterilization. be able to.

Further, the space is each guest room 10 of the hotel 1 (accommodation facility), and the control unit 122 provides at least information on the priority order and information on the replacement period of each guest room 10 (time information shown in FIG. 8). One operation pattern among the plurality of operation patterns P20 is assigned to each passenger room 10 based on predetermined assignment information including.

By configuring in this way, it is possible to appropriately assign one operation pattern to each passenger room 10 so as to match the replacement period.

The allocation information also includes information (maximum number of cleanings) on the number of guest rooms that can be replaced in the same time slot by workers (cleaners) during the replacement period.

By configuring in this way, one operation pattern P20 can be assigned to each cabin 10 in consideration of replacement preparation work for workers.

In addition, the hotel 1 which concerns on 2nd embodiment is one form of implementation of the accommodation facility which concerns on this invention.

Although the second embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, the controller 122 allocates the cleaning time and the like and then allocates the sterilization time and the operation pattern, but the order of allocating the cleaning time and the like is not particularly limited.

Also, although the device to which the cleaning time and the sterilization time are assigned is the control unit 122, it is not limited to this, and may be a device other than the control unit 122 (for example, the management system 130, etc.).

Next, with reference to FIG. 11, a sterilization system 220 according to a third embodiment will be described. In addition, the arrow shown to Fig.11 (a) shows typically the flow of ozone.

As shown in FIG. 11( a ), the unit bath section 13 is partitioned with respect to the bedroom 11 and passageway 12 . Therefore, even if ozone is emitted from the ozone generator 21 in the bedroom 11, the ozone concentration may not be sufficiently distributed to the unit bath section 13, resulting in uneven ozone concentration.

The sterilization system 220 according to the third embodiment executes the bathroom sterilization pattern P36 in which the bathroom ventilator 13a is operated at an air volume larger than that for 24-hour ventilation during the inactivation time (the time during which the ozone generator 21 is operated), and ozone is generated. It is greatly different from the sterilization system 20 according to the first embodiment in that density unevenness is suppressed. Below, the said difference is demonstrated.

First, the bathroom ventilation fan 13a will be described. As described above, the bathroom ventilation fan 13a is configured so that the air volume can be adjusted stepwise ("24-hour ventilation", "weak" and "strong"). The bathroom ventilation fan 13a can change the air volume based on a signal from the control unit 222. FIG.

Next, the bathroom disinfection pattern P36 shown in FIG. 11(b) will be described. FIG. 11(b) shows the result of simulating the bathroom disinfection pattern P36 using Equation 2, which will be described later.

The bathroom sterilization pattern P36 controls the bathroom ventilation fan 13a and the like so that the CT value in the unit bath section 13 reaches the target value. When executing the bathroom disinfection pattern P36 (11:40 in FIG. 11(b)), the control unit 222 operates the ozone generator 21 and sets the bathroom ventilator 13a to a higher air volume than "24-hour ventilation". It is operated at "weak" and the ozone discharged into the bedroom 11 is drawn into the unit bath section 13 (see the arrow indicated by the dashed line in FIG. 11(a)). Accordingly, the control section 222 increases the ozone concentration in the unit bath section 13 (at 13:20 in FIG. 11(b)). The control unit 222 continues the release and withdrawal of ozone for a predetermined period of time, and increases the ozone concentration in the unit bath section 13 to a predetermined concentration (approximately 0.7 ppm) (see "deactivation time" shown in FIG. 11(b). ). As a result, the control section 222 suppresses uneven concentration in the unit bath section 13 and distributes ozone to the unit bath section 13 .

The control section 222 stops the operation of the ozone generator 21 when the ozone concentration in the unit bath section 13 is increased to a predetermined concentration. On the other hand, the control unit 222 does not return the air volume of the bathroom ventilation fan 13a to "24-hour ventilation", but continues to operate it at "weak". In this way, the control unit 222 continues to operate the bathroom ventilation fan 13a at “low” over the inactivation time and the neutralization period, and continues to draw ozone into the unit bath section 13 . When the control unit 222 lowers the ozone concentration of the bedroom 11 and the unit bath unit 13 to the completion ozone concentration or less (14:30 in FIG. 11(b)), the bathroom sterilization pattern P36 ends.

In the bathroom sterilization pattern P36, the inactivation time and the standby time are set in advance so that the CT value in the unit bath part 13 reaches the target value and the ozone concentration in the bedroom 11 and the unit bath part 13 is equal to or lower than the ozone concentration at the time of completion. is set to Specifically, the deactivation time and the like are set by simulating the bathroom sterilization pattern P36 using Equation 2 below.

Note that C'2 in Equation ₂ above is the ozone concentration [ppm] of the unit bath portion 13 . _C2 is the initial ozone concentration [ppm] of the unit bath section 13 . R ₂ is the air volume [m ³ ] of the unit bath section 13 . C ₁ is the ozone concentration [ppm] in the bedroom 11 . R ₁ is the air volume [m ³ ] of the bedroom 11; Other variables (air change frequency n, time step t and half-life T) are the same as in Equation 1 above.

When simulating the bathroom sterilization pattern P36 using Equation 2, the ventilation frequency when the air volume of the bathroom ventilation fan 13a is "weak" is substituted for the ventilation frequency n. The value of the half-life of ozone in the unit bath section 13 is substituted for the half-life T.

In the above formula 2, the amount of ozone in the unit bath section 13 that increases due to the operation of the bathroom ventilation fan 13a (drawing in ozone) is calculated by "(C ₁ -C ₂ )*nR ₁ t", and the amount of ozone in the unit bath section 13 is already calculated. Sum with the amount of ozone present (C ₂ *R ₂ ). Then, by dividing the total result by the air volume _R2 of the unit bath unit 13, the ozone concentration of the unit bath unit 13 when ozone is emitted while the bathroom ventilation fan 13a is operated at a "low" air volume is obtained. ing. The calculation result of the ozone concentration does not reflect the influence of the natural decrease of ozone.

Therefore, in Equation 2 above, the ozone concentration in the unit bath section 13 is obtained by multiplying the calculation result of the ozone concentration by "(1/2) ^t/T ", taking into consideration the effect of natural decrease.

FIG. 11(b) shows the results obtained by simulating the bathroom disinfection pattern P36 using Equation 2 above and obtaining the inactivation time and the standby time. In FIG. 11(b), the operation of the ozone generator 21 and the bathroom ventilation fan 13a (air volume "weak") is started at 11:40, and the ozone concentration in the unit bath section 13 is about 0.7 ppm ( (Concentration higher than the second target concentration (0.5 ppm)) (see "Inactivation time"). Further, in FIG. 11(b), the operation of the ozone generator 21 is stopped at this timing, and at 14:30 the ozone concentration is reduced to the completion ozone concentration (0.05 ppm) or less ("waiting time"). reference). In FIG. 11B, the area (CT value) of the broken line graph in the range from 11:40 to 14:30 exceeds the target value.

By executing the bathroom sterilization pattern P36, the control section 222 can cause the CT value in the unit bath section 13 to reach the target value and perform sterilization of the unit bath section 13 appropriately. In addition, the single ozone generator 21 can efficiently sterilize the unit bath section 13 in which the ozone generator 21 is not installed.

As described above, the space of the third embodiment is the guest room 10 of the hotel 1 (accommodation facility), the bathroom ventilation fan 13a (ventilation fan) is provided in the unit bath section 13 in the guest room 10, and the ozone generating The device 21 is provided in a space (bedroom 11) different from the unit bath section 13 in the guest room 10 so as to be able to release the sterilizing component, and the third operation pattern includes the first period (unusual activation time) and a sixth operation pattern (bathroom sterilization pattern P36) in which the bathroom ventilation fan 13a is operated at the first air volume over the second period (standby time).

By configuring in this way, ozone can be drawn into the unit bath section 13 from another space (bedroom 11 ), and the sterilizing component can be quickly distributed throughout the guest room 10 .

Although the third embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, in the bathroom sterilization pattern P36, the ozone generator 21 and the bathroom ventilation fan 13a are operated at the same timing during the inactivation time, but the operation timings of the ozone generator 21 and the bathroom ventilation fan 13a may be different from each other. . For example, the bathroom ventilation fan 13a may be delayed from the ozone generator 21 to change the air volume. As a result, ozone can be efficiently drawn into the unit bath section 13 from the bedroom 11 in which the ozone concentration has become high.

Further, in the bathroom disinfection pattern P36, the bathroom ventilation fan 13a is operated with a "low" air volume, but the air volume of the bathroom ventilation fan 13a can be changed as appropriate. For example, after the CT value reaches the target value, the air volume of the bathroom ventilation fan 13a may be changed from "weak" to "strong". Thereby, waiting time can be shortened.

Further, the control for operating the bathroom ventilation fan 13a during the deactivation time is not limited to the bathroom disinfection pattern P36 shown in FIG. For example, the control section 222 may operate the bathroom ventilation fan 13a during the deactivation time and maintain the ozone concentration of the unit bath section 13 at the second target concentration (0.5 ppm). As a result, the unit bath section 13 can be sterilized with an ozone concentration that has little effect on the human body.

Further, the control unit 222 may set a plurality of operation patterns for operating the bathroom ventilator 13a during the inactivation time, and set a priority order for the operation patterns.

1 Hotel (building)
10 Guest rooms (spaces used by users in turn)
13a Bathroom ventilation fan (sterilization means)
20 sterilization system 21 ozone generator (sterilization means)
P10 Operation pattern

Claims (8)

A sterilization system that sterilizes the space during the replacement period of the space used by users in the building,
sterilization means for sterilizing the space, including a sterilization device capable of releasing a gaseous sterilization component into the space;
One of a plurality of operation patterns of the sterilization means set in advance so that the sterilization of the space is completed in the remaining period until the end of the replacement period and according to the priority based on a predetermined standard a control means for determining the driving pattern;
A sterilization system comprising a The determined operation pattern includes:
a first period during which the sterilization component is released into the space by operation of the sterilization device;
a second period until the sterilizing component released during the first period is discharged or deactivated from the space by stopping the operation of the sterilizing device;
The operation timing of the sterilization device is set so that is included in the remaining period,
The sterilization system according to claim 1. In the plurality of operation patterns,
During the first period,
a first operation pattern in which a target component concentration of the space by the sterilizing component is set to a first concentration based on a predetermined environmental standard;
and a second operation pattern in which the target component concentration is set to a second concentration higher than the first concentration,
The priority of the first operation pattern is set higher than that of the second operation pattern.
The sterilization system according to claim 2. The sterilization means includes a ventilation fan that promotes discharge of the sterilization component released into the space,
In the plurality of operation patterns,
In at least one of the first period and the second period,
a third operation pattern for operating the ventilation fan at a first air volume;
and a fourth operation pattern in which the ventilation fan is operated at a second air volume smaller than the first air volume,
The fourth operation pattern has a higher priority than the third operation pattern,
The sterilization system according to claim 2 or 3. The space is a guest room of an accommodation facility,
The ventilation fan is provided in a unit bath part in the guest room,
The sterilization device is provided so as to be able to release the sterilization component to a space different from the unit bath part in the passenger room,
The third operation pattern includes
A sixth operation pattern in which the ventilation fan is operated at the first air volume over the first period and the second period,
The sterilization system according to claim 4. In the plurality of operation patterns,
A seventh operation pattern in which the first period and the second period are repeated twice with a predetermined period,
The seventh operation pattern is set to have a higher priority than other operation patterns,
The sterilization system according to any one of claims 2 to 5. The space is each guest room of an accommodation facility,
The control means is
Assigning one of the plurality of operation patterns to each cabin based on predetermined assignment information including at least information about the priority and information about the replacement period of each cabin;
The sterilization system according to any one of claims 1 to 6. The allocation information includes:
Information on the number of guest rooms that can be executed in the same time period by workers to prepare for replacement during the replacement period is included.
The sterilization system according to claim 7.

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