Space decontamination equipment

Abstract

To provide a space decontamination device capable of maintaining drug solution gas density for decontamination in a space which is a decontamination processing object to required density, even when omitting a structure of a gas density measurement sensor which is represented by a hydrogen peroxide gas density measurement sensor.SOLUTION: A space decontamination device 100 comprises: a drug solution tank 20 storing a drug solution for decontamination; a decontamination gas generation part 50 for generating a decontamination gas from the drug solution for decontamination stored in the drug solution tank 20; a volume input part 40 inputting the volume of the decontamination space; and a control part 60 for controlling the amount of the decontamination gas generated by the decontamination gas generation part 50 and a supply time of the decontamination gas, for maintaining preset density of the decontamination gas for a prescribed period, in the decontamination space on the basis of the volume input by the volume input part 40.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a space decontamination apparatus. [Background technology]

[0002] A spatial decontamination device is provided for decontamination treatment using hydrogen peroxide gas in medical and nursing care facilities, as well as in rooms where an unspecified number of people enter and exit. A configuration such as that disclosed in Patent Document 1 (JP Patent Publication No. 2018-114202) is known as such a spatial decontamination device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-114202 A Summary of the Invention [Problem to be solved by the invention]

[0004] The spatial decontamination device disclosed in Patent Document 1 is equipped with a hydrogen peroxide gas concentration measurement sensor. The hydrogen peroxide gas concentration measurement sensor requires annual calibration and replacement every two years, which makes maintenance complicated and increases running costs. Furthermore, neglecting this maintenance can result in incomplete decontamination processing. [Means for solving the problem]

[0005] The present invention has been made to solve the above problems, and has the following object: That is, the present invention provides a space decontamination device that can maintain the decontamination chemical gas concentration at a required concentration in the space to be decontaminated, even if the configuration of a gas concentration measurement sensor, such as a hydrogen peroxide gas concentration measurement sensor, which is troublesome to maintain and causes high running costs, is omitted.

[0006] As a result of intensive research by the inventors to solve the above problems, the inventors have come up with the following configuration: That is, the present invention includes a liquid tank that contains a decontamination liquid, a decontamination gas generating unit that generates a decontamination gas from the decontamination liquid contained in the liquid tank, a volume input unit that inputs a volume of a decontamination space, and a control unit that controls the amount of decontamination gas generated and the supply time of the decontamination gas generated by the decontamination gas generating unit based on the volume input by the volume input unit so that the concentration of the decontamination gas in the decontamination space continues to be a preset concentration for a predetermined period of time; and a measuring instrument that measures the weight of the decontamination liquid contained in the liquid tank, and the control unit controls the amount of the decontamination gas generated by the decontamination gas generation unit based on the volume input by the volume input unit and the weight measured by the measuring instrument. This is a space decontamination device characterized by the above.

[0007] This makes it possible to omit the configuration of a gas concentration sensor, such as a hydrogen peroxide gas concentration measuring sensor, thereby making it possible to provide a space decontamination device that is easy to maintain and contributes to reducing running costs, while also being able to appropriately maintain the decontamination chemical gas concentration required for decontamination.

[0009] This makes it possible to easily control the amount of decontamination gas to be supplied to the decontamination space based on the weight of the decontamination liquid contained in the liquid tank.

[0010] Also, The present invention includes a liquid tank for storing a decontamination liquid, a decontamination gas generating unit for generating a decontamination gas from the decontamination liquid stored in the liquid tank, a volume input unit for inputting a volume of a decontamination space, and a control unit for controlling the amount of decontamination gas generated and the supply time of the decontamination gas generated by the decontamination gas generating unit based on the volume input by the volume input unit so that a preset concentration of the decontamination gas in the decontamination space is maintained for a predetermined period of time. A measuring instrument for measuring the amount of the decontamination liquid supplied from the liquid tank to the decontamination gas generation unit. and The control unit controls the amount of the decontamination gas generated by the decontamination gas generation unit based on the volume input by the volume input unit and the supply amount measured by the measuring device. This is a space decontamination device that features the following:

[0011] This makes it possible to easily control the amount of decontamination gas generated and supplied to the decontamination space based on the amount of decontamination chemical liquid supplied to the decontamination gas generator.

[0012] It is preferable that the decontamination apparatus further comprises a blower fan for discharging the decontamination gas remaining in the decontamination space to the outside of the decontamination space after the decontamination treatment of the decontamination space.

[0013] It is also preferable that the decontamination apparatus further comprises a decontamination device that renders the decontamination gas remaining in the decontamination space harmless by a catalyst after the decontamination treatment of the decontamination space.

[0014] These features make it possible to make the decontamination space safe after the decontamination process.

[0015] It is also preferable that the control unit executes a process of calculating the operation time of the blower fan or the decontaminator based on the volume input by the volume input unit, and a process of operating the blower fan or the decontaminator for at least the operation time after decontamination processing of the decontamination space.

[0016] This makes it possible to automatically make the decontamination space safe after the decontamination process.

[0017] It is also preferable that the device further comprises a communication means capable of communicating with an electronic device having a communication function, and the control unit transmits a notification guide to the electronic device via the communication means after the operation time has elapsed.

[0018] This makes it possible to quickly know when it is safe to enter the decontamination space after the decontamination process. Effect of the Invention

[0019] By adopting the configuration of the spatial decontamination device of the present invention, it is possible to omit the configuration of a gas concentration sensor, such as a hydrogen peroxide gas concentration measurement sensor, which makes it easy to maintain and contributes to reducing running costs, and provides a spatial decontamination device that can appropriately maintain the concentration of decontamination chemical gas required for decontamination. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a perspective view of the spatial decontamination apparatus according to the present embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II in FIG. [Diagram 3] 3 is a view seen from the direction of the arrow III in FIG. 1 with a side panel of the spatial decontamination apparatus in this embodiment removed. [Figure 4] 4 is an enlarged view showing the state of the inside part of the housing at part IV in FIG. 3. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the spatial decontamination apparatus 100 according to the present invention will be specifically described with reference to the drawings. As shown in FIG. 1 and FIG. 2, the spatial decontamination apparatus 100 in this embodiment includes a rectangular parallelepiped housing 10, a chemical tank 20 arranged in the housing 10, a spray nozzle 30, a volume input unit 40, a decontamination gas generating unit 50, a control unit 60, and a power supply unit 70. In this embodiment, a configuration using hydrogen peroxide as the decontamination chemical is described, but the decontamination chemical is not limited to hydrogen peroxide, and other known decontamination chemicals can also be used. Hereinafter, the decontamination chemical may be simply referred to as the chemical or hydrogen peroxide.

[0022] In the present embodiment, the housing 10 is provided with handles 12 on a pair of opposing outer peripheries on the top surface, and casters 14 are provided on each corner of the bottom surface of the housing 10, so that the operator can move the housing 10 as needed. In addition, a power outlet 16 is provided on the rear surface of the housing 10 in the present embodiment. The power outlet 16 is electrically connected to a power supply unit 70, which is connected to a commercial power supply (not shown). This allows power to be supplied to an electrically-powered accessory 80 via the power outlet 16. Examples of the electrically-powered accessory 80 include a blower fan that exhausts hydrogen peroxide gas to the outside of the room after decontamination processing, and a detoxifier that renders hydrogen peroxide gas harmless using a catalyst.

[0023] The liquid tank 20 is accommodated in the internal space of the housing 10, and hydrogen peroxide can be easily supplied to the liquid tank 20 by flipping up an openable lid 22 disposed on the upper surface of the housing 10. A scale 24 indicating the storage capacity is provided on the inner wall surface of the liquid tank 20. In addition, a measuring device 26 for measuring the weight of the hydrogen peroxide contained in the liquid tank 20 is disposed below the liquid tank 20 in this embodiment, and the measuring device 26 is fixed to the liquid tank 20. The weight data of the hydrogen peroxide measured by the measuring device 26 is transmitted in real time to the storage means 64 of the control unit 60 after the decontamination processing operation by the spatial decontamination apparatus 100 is started. The weight data transmitted from the measuring device 26 can also be tared in advance.

[0024] In addition, a drain pipe 28 drawn out to the side of the housing 10 is provided at the bottom of the chemical tank 20. A drain valve 29 is provided in the drain pipe 28. When the spatial decontamination apparatus 100 is used, the user closes the drain valve 29, and when the spatial decontamination apparatus 100 is not used or is being transported, the user opens the drain valve 29 and performs a process of discharging the chemical liquid in the chemical tank 20 from the drain pipe 28 to a predetermined container. By providing such a drain pipe 28 and a drain valve 29, it is possible to prevent accidents such as leakage of the chemical liquid during transportation of the spatial decontamination apparatus 100, and to safely handle the spatial decontamination apparatus 100. In addition, a liquid delivery pipe (not shown) that delivers the chemical liquid contained in the chemical tank 20 to the decontamination gas generation unit 50 is connected to the bottom of the chemical tank 20. The chemical liquid is delivered by a tube pump 90. Here, the two-fluid nozzle 51, which is a part of the decontamination gas generation unit 50, and the chemical tank 20 are connected by a liquid delivery pipe.

[0025] In this embodiment, two spray nozzles 30 are arranged side by side with their openings on the upper surface of the housing 10. The spray tubes 32 arranged in the spray nozzles 30 are individually rotatable around a vertical axis. The spray nozzles 30 are arranged at the most downstream position of a flow passage 56 described later.

[0026] The volume input unit 40 is disposed on the upper surface of the housing 10. The volume input unit 40 in this embodiment is capable of inputting the volume of the decontamination target room, which is the decontamination space, and of inputting a measurement data transmission command for making the measuring device 26 measure the weight of the hydrogen peroxide solution contained in the chemical tank 20 and for transmitting the measurement data to the storage means 64. The volume input unit 40 has a number input unit (not shown) for inputting any number and a command input unit (not shown) for selecting and transmitting a preset command, but a keyboard-like configuration may also be adopted. Note that the volume measurement of the decontamination target room in this embodiment is calculated by the user measuring the three-dimensional dimensions of the decontamination target room using a laser distance measuring device or the like.

[0027] The decontamination gas generator 50 in this embodiment is for generating hydrogen peroxide gas to be supplied to the room to be decontaminated, and includes a two-fluid nozzle 51, an air compressor 52, a regulator 53, an outside air intake fan 54, a heater 55, and a flow passage 56. The two-fluid nozzle 51 is supplied with a chemical solution from a tube pump 90, and compressed air compressed by the air compressor 52 and then adjusted to a predetermined pressure by the regulator 53 is supplied. The two-fluid nozzle 51 is disposed in a state in which the nozzle faces downward (facing the outside air intake fan 54) so ​​as to spray a mist of hydrogen peroxide solution in the direction of the downward arrow in FIG. 2 in the vertical path of the flow passage 56. The air compressor 52 compresses the outside air taken in from an outside air intake port (not shown) disposed on the outer surface of the housing 10. The compressed air generated by the air compressor 52 is supplied to the regulator 53 and adjusted to a predetermined pressure. The compressed air adjusted by the regulator 53 is supplied to the two-fluid nozzle 51.

[0028] The outside air intake fan 54 is disposed at the bottom of the housing 10, and supplies the outside air taken in from an outside air intake port disposed on the outer surface of the housing 10 through a flow passage 56 that communicates from the outside air intake fan 54 to the position of the spray nozzle 30. The outside air taken in by the outside air intake fan 54 flows along the flow passage 56 as shown in the direction of the dashed arrow in FIG. 2. A heater 55 is disposed adjacent to the outside air intake fan 54 in the horizontal path of the flow passage 56, and the outside air taken in the flow passage 56 is heated to a predetermined temperature. The outside air heated to the predetermined temperature is pushed out by the outside air taken in by the outside air intake fan 54 and is supplied toward the two-fluid nozzle 51 (spray nozzle 30). By causing the mist of hydrogen peroxide sprayed from the two-fluid nozzle 51 to collide head-on with the air heated by the heater 55, the mist of hydrogen peroxide can be reliably vaporized and released as hydrogen peroxide gas from the spray nozzle 30 toward the outside of the housing 10.

[0029] The control unit 60 has a communication means 62, a storage means 64, an operation control program PGM stored in the storage means 64, a timer 66, and a calculation means 68. The communication means 62 has a Web server function capable of wireless communication, and can communicate with an electronic device (not shown) having a communication function, such as a user's smartphone, but the specific form of communication is not particularly limited. In addition, since FIG. 3 is a schematic diagram, the communication means 62 is shown as being arranged together with other components of the control unit 60 in a position close to the control unit 60, but the actual communication means 62 is arranged in the volume input unit 40. In addition, the user can remotely check the progress of the decontamination process of the spatial decontamination device 100 and control the operation by accessing the control unit 60 via the communication means 62 using a Web browser installed on the user's smartphone.

[0030] The calculation means 68 controls the amount of hydrogen peroxide gas sprayed per unit time from the spray nozzle 30 based on the operation control program PGM. Specifically, the operation of the decontamination gas generation unit 50 is controlled so that the hydrogen peroxide gas concentration in the decontamination target room is a predetermined value based on the volume of the decontamination target room transmitted to the storage means 64, the weight of the hydrogen peroxide solution contained in the chemical tank 20, and the elapsed time of the decontamination process by the timer 66. More specifically, the calculation means 68 calculates the concentration of hydrogen peroxide gas in the decontamination target room based on the volume of the decontamination target room and the cumulative weight of the hydrogen peroxide gas sprayed from the spray nozzle 30 (the difference between the measured weights of the hydrogen peroxide solution contained in the chemical tank 20 before and after the elapse of a predetermined time). In addition, the calculation means 68 executes a process of causing the decontamination gas generation unit 50 to generate hydrogen peroxide gas at maximum output until the predetermined gas concentration stored in the storage means 64 is reached.

[0031] When the hydrogen peroxide gas concentration in the decontamination target room reaches the predetermined gas concentration, the calculation means 68 reduces the amount of hydrogen peroxide gas generated by the decontamination gas generation unit 50 based on the operation control program PGM, and maintains the hydrogen peroxide gas concentration in the decontamination target room at the predetermined gas concentration for a predetermined time. Such operation control of the amount of hydrogen peroxide gas generated by the decontamination gas generation unit 50 and its supply time can be calculated in advance by spray experiments in a plurality of decontamination target rooms having different decontamination volumes. After maintaining the predetermined hydrogen peroxide gas concentration in the decontamination target room for a predetermined time, the calculation means 68 stops the generation of hydrogen peroxide gas by the decontamination gas generation unit 50 and operates the electric accessory 80, which is a blower fan or a decontaminator, based on the operation control program PGM. By operating the electric accessory 80 after the decontamination process in this way, the hydrogen peroxide gas concentration in the decontamination target room can be reduced to a safe level. In addition, if there is a communication between the room to be decontaminated and the outside, a decontamination blower fan can be used, and if there is no communication between the room to be decontaminated and the outside, a decontamination device can be suitably used.

[0032] Prior to operating the electrically-operated accessory 80, the calculation means 68 calculates the operating time for operating the electrically-operated accessory 80 based on the volume input from the volume input unit 40. Then, after the operation of the decontamination gas generation unit 50 has stopped (after the decontamination process of the room to be decontaminated), the calculation means 68 performs a process of operating the electrically-operated accessory 80 for at least the calculated operating time (which may be calculated in advance). After the operating time has elapsed, the calculation means 68 also performs a process of sending a notification to the user's smartphone via the communication means 62 that it is now possible to enter the room to be decontaminated. By the calculation means 68 (control unit 60) performing such an operation control process of the electrically-operated accessory 80 after the decontamination process of the room to be decontaminated, the decontamination process of the room to be decontaminated and the subsequent process can be performed fully automatically.

[0033] In this embodiment, since the user stops the operation of the electrically-operated accessory 80 after entering the room to be decontaminated, the room to be decontaminated can be made safer. In addition, a configuration can be adopted in which the computing means 68 executes a process to stop the operation of the electrically-operated accessory 80 when the electrically-operated accessory 80 operates for an automatic stop time obtained by multiplying the operating time calculated by the computing means 68 based on the volume of the room to be decontaminated by a safety factor.

[0034] Next, a method for decontaminating a room to be decontaminated using the spatial decontamination apparatus 100 in this embodiment will be described. The user carries the spatial decontamination apparatus 100 into the room to be decontaminated, checks the power capacity of the commercial power source in the room to be decontaminated, connects the spatial decontamination apparatus 100, and turns on the power of the spatial decontamination apparatus 100. It is preferable to arrange the spatial decontamination apparatus 100 at the center of the room to be decontaminated. In addition, the user cleans the room to be decontaminated and removes organic matter so that decontamination with hydrogen peroxide gas is possible. In conjunction with this cleaning, the equipment in the room to be decontaminated is also protected. Specifically, the sensor part of the equipment using a chemical sensor is protected, the doors in the room are opened, and the placed objects are exposed, and the placed objects such as beds and mattresses are treated so that contact with the decontamination chemical gas is ensured.

[0035] The user also measures the temperature and humidity of the room to be decontaminated. If the temperature and humidity are outside the operating range of the spatial decontamination apparatus 100, the user operates an air conditioner or the like to adjust the temperature and humidity of the room to be decontaminated to be within the operating range of the spatial decontamination apparatus 100. The user also connects the decontaminator as the electric accessory 80 to the power outlet 16 of the housing 10. The user also covers the vents and fire alarms in the room to be decontaminated with a covering accessory (not shown) to prevent gas leakage from the vents and false activation of the fire alarms. The user also covers the parts of the room to be decontaminated except for the entrance and exit. The user also measures the three-dimensional dimensions of the room to be decontaminated using a distance measuring device such as a laser range finder, calculates the room volume, and inputs the room volume to the spatial decontamination apparatus 100 using the volume input unit 40.

[0036] The user also places chemical indicators (not shown) that react with hydrogen peroxide gas at multiple locations on the walls of the room to be decontaminated. The user then connects the circulator to a commercial power source and turns on the circulator. The user opens the open / close lid 22 of the chemical tank 20 and supplies hydrogen peroxide to the chemical tank 20. The amount of hydrogen peroxide supplied to the chemical tank 20 corresponds to the room volume input in advance. The amount of hydrogen peroxide supplied according to the room volume can also be displayed on the back of the open / close lid 22 or on the scale 24 of the chemical tank 20. The user also starts the web browser of the smartphone and accesses the communication means 62 (a website for operating the spatial decontamination apparatus 100) to check the connection between the smartphone and the spatial decontamination apparatus 100.

[0037] Then, the user goes outside the room through the entrance of the decontamination target room, seals the entrance, and places a sign at the entrance saying "No entry to the ground". The order of the steps up to this point is not particularly limited, so the order of the steps can be changed as appropriate within the physically possible range. Next, the user operates the operation website of the spatial decontamination device 100 using a web browser, and issues an instruction to start the decontamination process of the spatial decontamination device 100. When the spatial decontamination device 100 receives an instruction to start the decontamination process, it performs a predetermined decontamination process based on the operation control program PGM, and then performs a process to reduce the hydrogen peroxide gas concentration in the decontamination target room to a predetermined concentration using the catalytic treatment device. When the series of processes described above are completed, the calculation means 68 transmits a notification of permission to enter the decontamination target room to the user's smartphone via the communication means 62.

[0038] After receiving a notification on their smartphone that they are permitted to enter the room to be decontaminated, the user enters the room to be decontaminated, checks the reaction state of the chemical indicator, and after confirming that the decontamination process has been carried out appropriately, ventilates the room, etc., and waits outside again. After this, the user measures the residual gas concentration with a hydrogen peroxide gas concentration meter, confirms that it is below the specified concentration, completes the decontamination process, and removes the protective measures, etc., to restore the room to its original state.

[0039] The above describes the form of the spatial decontamination apparatus 100 in this embodiment, but this embodiment is an example of the present invention, and the technical scope of the present invention is not limited to this embodiment. For example, in this embodiment, the calculation means 68 controls the operation of the decontamination gas generation unit 50 based on the difference in the measured weight of the hydrogen peroxide solution contained in the chemical tank 20 before and after the passage of a predetermined time, but is not limited to this form. The calculation means 68 can also adopt a form in which the operation of the decontamination gas generation unit 50 is controlled based on the volume of the chemical solution supplied from the chemical tank 20 to the decontamination gas generation unit 50 and the volume of the room to be decontaminated.

[0040] In addition, a configuration using a liquid supply pump (a pump having a function of measuring the amount of liquid supply) capable of supplying liquid chemicals to the two-fluid nozzle 51 (decontamination gas generating unit 50) and measuring the amount of liquid chemicals supplied can be adopted. In this case, the installation of the measuring device 26 can be omitted, and the computing means 68 can calculate the liquid chemical gas concentration in the room to be decontaminated based on the cumulative amount of liquid chemicals supplied measured and transmitted by the liquid supply pump and the volume of the room to be decontaminated, and perform output control of the decontamination gas generating unit 50 (control of the amount of decontamination gas generated and the supply time).

[0041] In the above embodiment, the communication between the user's smartphone and the spatial decontamination apparatus 100 is described as being performed by communication between the smartphone's web browser and the communication means 62 having a web server function, but the present invention is not limited to this form. A dedicated application capable of communicating with the communication means 62 of the spatial decontamination apparatus 100 may be installed on the smartphone, and the operation of the spatial decontamination apparatus 100 may be controlled by the smartphone using the dedicated application and the communication means 62.

[0042] It is also possible to adopt a configuration in which various modified examples of the embodiment described above are appropriately combined. [Explanation of symbols]

[0043] 10: Housing 12: Handle, 14: Caster, 16: Power outlet 20: Chemical tank 22: Opening and closing cover, 24: Scale, 26: Measuring instrument, 28: Drain pipe, 29: Drain valve 30: Spray nozzle 32: Spray tube 40: Volume input section 50: Decontamination gas generation unit 51: 2-fluid nozzle, 52: air compressor, 53: regulator, 54: Outdoor air intake fan, 55: Heater, 56: Air passage 60: Control unit 62: communication means, 64: storage means, 66: timer, 68: calculation means 70: Power supply section 80: Electric accessories 90: Tube pump 100: Space decontamination equipment PGM: Motion control program

Claims

1. A chemical tank for storing a decontamination chemical; a decontamination gas generating unit that generates a decontamination gas from the decontamination chemical liquid contained in the chemical liquid tank; A volume input unit for inputting the volume of the decontamination space; a control unit that controls the amount of the decontamination gas generated by the decontamination gas generation unit and a supply time of the decontamination gas so that a concentration of the decontamination gas in the decontamination space continues to be a preset concentration for a predetermined period of time based on the volume input by the volume input unit; A measuring instrument for measuring the weight of the decontamination liquid contained in the liquid tank, The control unit controls the amount of the decontamination gas generated by the decontamination gas generation unit based on the volume input by the volume input unit and the weight measured by the measuring instrument.

2. A chemical tank for storing a decontamination chemical; a decontamination gas generating unit that generates a decontamination gas from the decontamination chemical liquid contained in the chemical liquid tank; A volume input unit for inputting the volume of the decontamination space; a control unit that controls the amount of the decontamination gas generated by the decontamination gas generation unit and a supply time of the decontamination gas so that a concentration of the decontamination gas in the decontamination space continues to be a preset concentration for a predetermined period of time based on the volume input by the volume input unit; A measuring instrument for measuring the amount of the decontamination liquid supplied from the chemical tank to the decontamination gas generation unit, The control unit controls the amount of decontamination gas generated by the decontamination gas generation unit based on the volume input by the volume input unit and the supply amount measured by the measuring instrument.

3. 3. The space decontamination apparatus according to claim 1, further comprising a blower fan that exhausts the decontamination gas remaining in the decontamination space to the outside of the decontamination space after the decontamination process of the decontamination space.

4. The control unit is A process of calculating an operation time of the blower fan based on the volume input by the volume input unit; 4. The space decontamination apparatus according to claim 3, further comprising: a process of operating the blower fan for at least the operation time after the decontamination process of the decontamination space.

5. 3. The space decontamination apparatus according to claim 1, further comprising a decontaminator that renders the decontamination gas remaining in the decontamination space harmless by a catalyst after the decontamination process of the decontamination space.

6. The control unit is A process of calculating an operation time of the eliminator based on the volume input by the volume input unit; 6. The space decontamination apparatus according to claim 5, further comprising: a process of operating the decontamination device for at least the operation time after the decontamination process of the decontamination space.

7. The electronic device further includes a communication means capable of communicating with the electronic device having a communication function, 7. The spatial decontamination apparatus according to claim 4, wherein the control unit transmits a notification to the electronic device via the communication means after the operation time has elapsed.

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