Air shower

Abstract

Reduce the total time required for the air jet to pass through. [Solution] An air shower that has a function to determine the number of people entering the room, and adjusts the airflow, duration, or both of the air shower's fan based on the result of this determination.

Description

Technical Field

[0001] The present invention relates to an air shower.

Background Art

[0002] Air shower devices for blowing dust off the human body or articles are widely used. An example thereof is disclosed in Patent Document 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 discloses that when the air volume of an air jet becomes less than or equal to a threshold value, the air volume of the air jet is adjusted.

[0005] On the other hand, in recent years, as the use of air showers has spread, it has been expected to reduce the time required to pass through the air shower. Consideration of such new requirements and problems has not been made in Patent Document 1.

[0006] Therefore, an object of the present invention is to provide an air shower that can adjust the operation of an air shower device and reduce the total time required to pass through the air shower.

Means for Solving the Problems

[0007] An example for solving the above problems is as follows.

[0008] An air shower having a function of determining the number of people entering a room and adjusting the operation of the air volume, time, or both of the fan of the air shower according to the result of the determination.

Effects of the Invention

[0009] According to the present invention, it is possible to provide an air shower that can reduce the total time required to pass through the air shower.

[0010] Further aspects of the present invention and its effects will become clear throughout the entire specification below. [Brief explanation of the drawing]

[0011] [Figure 1] This is an example of an air shower control algorithm. [Figure 2] This is an example of an algorithm for determining the number of people using an air shower. [Figure 3A] This is a schematic front view diagram of an air shower system. [Figure 3B] This is a schematic diagram illustrating the internal workings of an air shower system. [Figure 3C] This is a schematic diagram illustrating the internal workings of an air shower system. [Figure 4A] This is an example of a label for an air shower device. [Figure 4B] This is an example of a label for an air shower device. [Figure 4C] This is an example of a label for an air shower device. [Figure 4D] This is an example of a notification regarding an air shower device. [Figure 5A] This is an example of an air shower system configuration. [Figure 5B] This is an example of an air shower system configuration. [Figure 5C] This is an example of an air shower system configuration. [Figure 6] This is an example of an air shower control algorithm. [Figure 7] This is an example of an air shower control algorithm. [Figure 8] This is an example of an air shower control algorithm. [Figure 9] This is an example of an air shower control algorithm. [Figure 10]This is an example of the control algorithm for an air shower. [Figure 11] This is an example of the control algorithm for an air shower. [Figure 12] This is an example of the control algorithm for an air shower. [Figure 13] This is an example of the control algorithm for an air shower. [Figure 14] This is an example of the control algorithm for an air shower. [Figure 15] This is an example of the control of an air shower.

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings as necessary.

Embodiment

[0013] Figure 1 is an example of the control algorithm for an air shower. In S01, the number of people is discriminated. This is a step of discriminating the number of people entering the room of the air shower at the same time. In S02, it is determined whether the number of people > the specified value. If YES, in S03, the setting of the air jet is changed and the air volume is increased. Instead, the time may be increased, or both the time and the air volume may be increased. For example, when the specified value is 2 people, when there are 3 or more people, it proceeds to S03. When there are 2 people or less, it proceeds to S04 as NO.

[0014] In S03, by increasing one or both of the air volume and the time, it becomes possible to perform necessary dust removal even when the number of people equal to or more than the specified value enter the air shower device at the same time, and an increase in the number of people for simultaneous dust removal and a shortening of the total dust removal time are realized.

[0015] In S04, it is determined whether the number of people < the specified value. If YES, the current set airflow is considered excessive, and in S05, the air jet setting is changed to reduce the airflow. This avoids unnecessary energy consumption and enables a low-power air shower. If NO, the current setting is considered appropriate, and the current setting is maintained. Alternatively, instead of reducing the airflow, the time can be reduced, or a combination of reducing airflow and reducing time may be used.

[0016] After setting the appropriate air shower airflow according to the number of people entering the air shower system, S06 confirms that the entrance door is closed or locked.

[0017] Next, in S07, the air jet is performed according to the set conditions. After the air jet is completed, in S08, the exit door opens or the lock on the exit door is released.

[0018] Figure 2 shows an example of a people counting algorithm. It uses one of various pieces of information to determine the number of people. This corresponds to the process leading up to step S01 in Figure 1.

[0019] S11 is a method that uses image recognition with a camera for identification. S12 is a method that uses heat source counting with an infrared sensor or IR camera for identification. S13 is a method that performs individual authentication using ID cards or wireless ID tags held by people entering the air shower, and then counts and tallys the number of people. S14 is a method that uses a weight sensor built into the air shower device to measure the weight on the floorboard inside the air shower device, divides it by a set value for the weight per person, and determines the number of people. This is a method that is commonly used for determining the number of people in elevator systems, etc.

[0020] S15 is a simulated count. Instead of accurately counting the actual number of people entering the air shower system, this method sets the number of people as virtual data based on the operating time of the air shower system per unit time, or on past operating data and setting data of the air shower system. This is a low-cost method that can be used in environments where many air shower systems are installed, such as factories and food processing plants, where the time when many people pass through the air shower system simultaneously is specified, without increasing the amount of hardware such as installing cameras. Examples of times when many people pass through the air shower system simultaneously include the time before work starts, lunch breaks, rest periods, and the time immediately after work ends.

[0021] At least one of these various pieces of information is used to determine the number of people in S01.

[0022] Figure 3A is an example of a schematic front view diagram of an air shower system. 100 is the air shower housing, and 010 is one of the doors, which in the diagram is an image of the entrance door. 102 is the display device.

[0023] Figure 3B is an example of a schematic internal diagram of an air shower system. 110 is an example of a means for determining the number of people, such as a camera or sensor. 120 is the floorboard, and 102 is the other door, which in the diagram is an image of the exit door. Note that the blower fan and blower motor built into the air shower system are known and therefore are not shown.

[0024] Figure 3C is another example of a schematic internal diagram of an air shower device. The difference from Figure 3B is that it has a weight sensor 121, which corresponds to S14 in Figure 2. This measures the load applied to the floor plate 120, divides it by the set assumed weight per person, and determines the number of people. Note that the weight sensor 121 can be any type, such as a piezoelectric sensor, load sensor, or strain sensor, as long as it can ultimately be converted to weight.

[0025] The air shower of the present invention can reduce the total time required for dust removal and thus reduce the waiting time for air shower users by allowing multiple people to enter the room and perform dust removal on multiple people simultaneously. However, for this to be possible, it is desirable that air shower users be able to clearly understand whether multiple people are allowed to enter the room at the same time.

[0026] The air shower system shown in Figure 3A, for example, is equipped with a display device 102 on the outer surface of the device on the entrance side, allowing air shower users to clearly understand whether multiple people are allowed to enter the room at the same time. The installation location is not particularly limited, but preferably it is in a location that is clearly visible, and in particular, it is desirable that it be installed above the entrance door where it is not visually obscured.

[0027] Figures 4A to 4C show examples of information displayed on the display device 102. Figure 4A shows an example where the number of people who can enter the room at the same time is displayed numerically. Figure 4B shows an example where the number of people is displayed using pictograms. This has the advantage of being visually and intuitively understandable. Figure 4B shows an example where information corresponding to the number of people who can enter the room is presented using, for example, the position and color of the light emission, or a lamp.

[0028] Furthermore, the number of people allowed to enter the air shower can be communicated to users through methods other than display devices. Figure 4D shows an example where the number of people allowed to enter is indicated by sound. The circles in the figure represent sounds, and the spaces between the circles represent silence.

[0029] 103A indicates that only one person is allowed inside at a time. The system beeps once, followed by a period of silence, and then another beep. This allows air shower users to understand that only one person is allowed inside at a time. An example of this system would be a beep followed by a period of silence, and then another beep.

[0030] In room 103B, the maximum number of people allowed is two. This is indicated by two beeps, followed by a period of silence, and then two more beeps. This allows air shower users to understand that only two people can enter at the same time. One example of this would be a series of beeps followed by a period of silence, and then another series of beeps.

[0031] Similarly, room 103C has a maximum capacity of 3 people.

[0032] Thus, methods other than visual displays can also be used to inform air shower users of the number of people allowed in the room. The advantage of using sound for notification is that it can be applied to existing air shower equipment without hardware modifications by adding functionality through software. For this reason, it is a particularly effective method when applying an algorithm like the one shown in Figure 1 to an existing air shower.

[0033] Figure 5A shows an example of the air shower system configuration. The information acquisition device 200 acquires information on the number of people entering the room. This is exemplified by steps S11 to S15 in Figure 1.

[0034] Based on the acquired information on the number of people, the command device 201 determines at least one of the fan's airflow rate or duration. This corresponds to the execution of steps S02 to S05 in Figure 1. At the same time, the device retrieves or modifies predefined values ​​as necessary in communication with the storage device 205.

[0035] The display device 102 displays information on the number of people who can enter the room at the same time, as instructed by the command device 201.

[0036] The command device 201, corresponding to S07 in Figure 1, instructs the fan motor 203 to blow air for dust removal. The time, airflow, or both are predetermined, for example, by performing steps S02 to S05.

[0037] Prior to issuing the instruction to start the fan, the control device 201 instructs the door locking device 204 to lock the entrance door. This corresponds to S06 in Figure 1.

[0038] 206 is a communication device. The command device 201 may receive instructions for operating conditions from an external control center or the like via the communication device 206.

[0039] Figure 5B corresponds to Figure 5A. When determining the number of people using a pseudo-count as shown in S15 of Figure 2, time information is required. Therefore, when implementing a pseudo-count function like S15 in Figure 2, it is necessary to have a timer 210. Note that this timer may also be a function of a clock.

[0040] Figure 5C is a diagram corresponding to Figure 5A. The difference from Figure 5A is that the communication device 206 is connected to the monitoring device 207 via the public communication line 208.

[0041] Here, the public communication line 208 includes mobile phone lines and internet lines.

[0042] Furthermore, the monitoring device 207 may also be a management device located in the user's factory's operation center or on the management side of a management company contracted to operate the air shower system.

[0043] The monitoring device 207 allows for more detailed configuration of various settings for the air shower system. For example, when construction work is being carried out in the factory, the air shower system itself can be set to allow multiple people to enter simultaneously, unlike the usual settings. Also, when the operating rate decreases due to holidays, the airflow and duration of the air shower can be set to the minimum. Furthermore, appropriate conditions can be set for sudden changes in work shifts or when overtime work is required for the entire company. [Examples]

[0044] Figure 6 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically identical to Embodiment 1. Regarding the differences, we will explain them mainly in terms of the differences from Figure 1 of Embodiment 1.

[0045] In Figure 6, the concept of "number of people per unit time > specified value" is used as S22. This is a replacement for S02 in Figure 1, "number of people > specified value". Similarly, the concept of "number of people per unit time < specified value" is used as S24. This is a replacement for S04 in Figure 1, "number of people < specified value".

[0046] The control algorithm in Figure 1, as an example, makes a judgment after each air shower operation. In contrast, the control algorithm in Figure 6 is based on the concept of making a judgment and controlling based on the number of people per unit of time.

[0047] This concept is particularly suitable for performing a simulated count, as shown in S15 of Figure 2. That is, the number of people per unit time can be considered as the number of times the air shower operates per unit time. In such cases, dedicated devices such as cameras, weight sensors, and ID authentication devices for counting the actual number of people are not necessarily required, and it becomes possible to apply this to existing air showers through software improvements such as adding an algorithm. [Examples]

[0048] Figure 7 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically identical to Figure 6 of Embodiment 2. The difference is that in Figure 7, S23 is used instead of S03 in Figure 6, and the specified value is increased simultaneously with the change in the air jet setting. Similarly, in Figure 7, S25 is used instead of S05 in Figure 6, and the specified value is decreased simultaneously with the change in the air jet setting.

[0049] This allows for the appropriate value of the number of people per unit of time to be used as correction information to make appropriate adjustments to the default value. [Examples]

[0050] Figure 8 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically the same as Figure 7 of Embodiment 3. The difference is that the information of the specified value is received from the command device 201 as S30 and modified.

[0051] This allows for more detailed settings to be reflected and controlled, particularly from the monitoring device 207 in Figure 5C. [Examples]

[0052] Figure 9 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically identical to Figure 8 of Embodiment 4. The difference is that information on changes in the specified values ​​is fed back to the command device 201 as S31 and S32.

[0053] This allows for more appropriate settings for controlling the air shower. Furthermore, by feeding back the corrected default value information to the storage device 205, default value settings that better reflect actual operating conditions can be achieved. [Examples]

[0054] Figure 10 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically identical to that in Figure 6.

[0055] The difference is that instead of the person identification shown in S01 in Figure 6, S41 counts the operating time of the air shower per unit time.

[0056] Then, in S42, if the count > specified value, i.e., if the operating time of the air shower exceeds a predetermined value, it is assumed that there is a high possibility that the number of people passing through the air shower is large and there is a waiting line to enter. In S03, the settings of the air shower are changed to increase either the airflow volume or the duration, or both, and in exchange, the number of people allowed to enter at the same time is increased.

[0057] Furthermore, in S44, if the count < specified value, i.e., the operating time of the air shower falls below a preset specified value, it is assumed that there are few people passing through the air shower and that there is a high possibility that there is no waiting to enter. In this case, in S05, the settings of the air shower are changed to reduce one or both of the air volume and / or time of the air shower, and in exchange, the number of people allowed to enter at the same time is reduced. Information on the change in the number of people allowed to enter at the same time will be made known, for example, by the display device 102.

[0058] In this embodiment, management is possible using a simple metric, operating time per unit of time. Therefore, without installing hardware such as cameras, ID sensors, or weight sensors, it is possible to improve the operational efficiency of existing air showers and reduce waiting times for entry simply by changing the control algorithm. [Examples]

[0059] Figure 11 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically the same as that in Figure 10. The difference is that in S43, the specified value is increased when the air shower settings are changed, and in S45, the specified value is decreased when the air shower settings are changed.

[0060] In this embodiment, in addition to the effects of Embodiment 6, appropriate adjustments to the specified values ​​in response to changes in the entry status of entrants are achieved. [Examples]

[0061] Figure 12 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically the same as Figure 11. The difference is that the information of the specified value is received from the command device 201 as S30 and modified.

[0062] This allows for more detailed settings to be reflected and controlled, particularly from the monitoring device 207 in Figure 5C. [Examples]

[0063] Figure 13 shows an example of the air shower control algorithm in this embodiment. This embodiment is basically the same as that in Figure 12. The difference is that information on changes in the specified values ​​is fed back to the command device 201 as S31 and S32.

[0064] This allows for more appropriate settings for controlling the air shower. Furthermore, by feeding back the corrected default value information to the storage device 205, default value settings that better reflect actual operating conditions can be achieved. [Examples]

[0065] This embodiment uses one of the following in combination with any of Examples 1 to 9. (A) The default value is reset periodically. This is to avoid the accumulation of unexpected errors due to long-term continuous operation. (B) The default value information for each time period from the previous day is temporarily set as the default value information for the current day. This allows for more precise settings to be defined as the initial default values. (C) The default value information for each time period on the same day of the previous week is temporarily set as the default value information for the current day. This allows for more accurate settings to be defined as the initial default values. (D) Set a lower threshold on days when the facility is closed. This will allow the total operation of the air showers to be reduced on days when the facility is expected to be less operational than on normal days. (E) The monitoring device reduces the specified value information on days or times when a large number of entries are expected. This makes it possible to shorten the waiting time for entry in advance. (F) The monitoring device will increase the air jet pressure on days or times when a large number of entries are expected. This will allow for a reduction in waiting times for entry. (G) The monitoring device schedules and manages the aforementioned specified values. This makes it possible to shorten the waiting time for entering the room in advance. [Examples]

[0066] Figure 14 shows an example of the air shower control algorithm in this embodiment.

[0067] This embodiment is the same as Figures 10 to 13 in that it uses the operating time per unit time, but it provides a detailed explanation of how to pre-set the operating conditions.

[0068] In S50, X1 is the past, hourly, per-unit airjet cumulative operating time, and Y1 is the past, average, per-unit airjet cumulative operating time. Here, "past" can be set in various ways as needed, such as the previous day or the same day of the previous week. Also, "hourly" does not necessarily mean every hour, but can be set in various ways, such as every 30 minutes or other time intervals.

[0069] As an example, in the following explanation, X1 will be the cumulative operating time of the air jet per hour, and Y1 will be the value obtained by dividing the cumulative operating time of the air jet over 24 hours by 24 to get the value per unit time.

[0070] In S51, X1 and Y1 are compared hourly. This reveals that, depending on the time period, X1 will exceed Y1. Then, in S52, the system compares and derives whether there are any time periods where X1 > Y1.

[0071] In S53, if there is a time period where S52 is YES, the number of people who can pass through simultaneously will be increased for that time period, and a flag will be set to extend the ventilation time. If NO, no particular setting changes will be made.

[0072] This comparison is performed for all time periods, and in S54, settings are created for each time period. For example, this process is performed shortly after 0:00 on the current day, based on X1 and Y1 from 0:00 to 24:00 on the previous day.

[0073] In S54, for the time-based settings created, S55 sets (A) to indicate that multiple people can pass through during time periods when the number of people who can pass through simultaneously increases, and to extend the ventilation time.

[0074] In S54, for the time-based settings created, no flags or settings are assigned in S56 for the time periods where the number of people who can pass through simultaneously is specified as (B).

[0075] As a result, during time period (A), instead of allowing two people to pass through at the same time, measures will be taken to enhance the air shower to maintain dust removal capabilities even when air jets are applied to multiple people at once, such as doubling the air jet's blowing time or doubling the air jet's airflow. During time period (B), for example, only one person will pass through at a time.

[0076] Based on the above, for example, during time slot (A), two people will be treated simultaneously, and the air shower will be set to 20 seconds, while during time slot (B), one person at a time will be treated, and the air shower will be set to 10 seconds.

[0077] At first glance, the total time required may appear the same between (A) and (B), but in reality, when passing through the air shower, there is incidental time before and after the air jet treatment, such as the time it takes for the entrance door to open and lock, and the time it takes for the exit door to open and for the person to complete their exit. Even when multiple people enter at the same time, this incidental time hardly increases. Therefore, by processing multiple people simultaneously, it is possible to increase the number of people who can be processed by air jet treatment per hour, reduce waiting times, and reduce the total processing time.

[0078] In 1982 (S57), the air jet system was put into operation.

[0079] For example, after a day of operation of the air jet system, in S58, X2 is obtained as the actual value of the operation result, which is the cumulative air jet operating time per unit time for each hour. By accumulating this X2 for one day and dividing it by the total number of unit times, in S59, Y2 is obtained as the average cumulative air jet operating time per unit time.

[0080] In S60, when air jet operation is automated, X2 and Y2 are used as the basis, and in S62, X2 is made into a new X1, and Y2 is made into a new Y1, and then the process returns to S50 again.

[0081] In S60, if the air jet operation is not automated, requires administrator approval, or involves proposing changes to the administrator, then in S61, you can suggest presenting and proposing an operation program and schedule to the administrator. Alternatively, you can suggest replacing X2 with a new X1, and Y2 with a new Y1.

[0082] If the administrator approves, the process proceeds to S62. If the administrator puts it on hold, disagrees, or does not take action, the process returns to S50 in S63, maintaining the original X1 and Y1 values.

[0083] In this embodiment, the indication that multiple people can pass through in S55 can be shown using, for example, the various display methods shown in Figures 4A to 4D.

[0084] Furthermore, while S52 uses a relative size for determination, adding or multiplying by some constant allows for greater flexibility in the settings. For example, it could allow multiple people to pass through during time periods where Y1 exceeds 50%.

[0085] According to this embodiment, for example, during times when the number of users of the air shower system is higher than at other times, such as the start of work hours, lunchtime, and break times, efficient passage through the air shower becomes possible, resulting in a reduction in waiting time and overall passage time.

[0086] Furthermore, during the process from 1986 to 1988, administrators could arbitrarily set the conditions for the air jet based on their past knowledge and understanding.

[0087] Furthermore, the replacement of X2 with X1 and Y2 with Y1 in S62 does not necessarily have to be done simultaneously; it also includes cases where only one is replaced, for example, only X2 is replaced with a new X1, while Y1 remains the original Y1. This is from the perspective of suppressing frequent changes in air jet conditions and simplifying management.

[0088] As described above, according to the above technical concept, it is possible to achieve both a reduction in total waiting time to enter the room and dust removal. [Examples]

[0089] Figure 15 shows an example of air shower control. The horizontal axis represents time, and the vertical axis represents the integrated air jet operating time per unit time. This can also be considered an explanation of Figure 14 from a different perspective.

[0090] First, the cumulative operating time of the air jet is averaged over the past period, such as the previous day or the previous week, to derive the cumulative operating time of the air jet per unit time. This value is then used as is, or a constant is added to or multiplied to derive the threshold S70.

[0091] In the past, such as the previous day or the previous week, time periods where the cumulative air jet operating time per unit time exceeded the threshold S70 are designated as UP, and time periods where it fell below that threshold, or time periods when the air shower was not operating, are designated as LW. Note that although the diagram shows the calculation being done in 30-minute intervals, the target time can be calculated in other ways.

[0092] In the diagram, during periods when UP, i.e., the accumulated air jet time per unit time, exceeds the threshold S70, the air jet time for that period is set to C seconds in the air jet schedule used the following day. This is S71 in the diagram. Similarly, during periods when it falls below the threshold S70, the air jet time for that period is set to D seconds in the air jet schedule used the following day. This is S72 in the diagram.

[0093] C seconds > D seconds. That is, the air jet time is increased during the time period when the cumulative air jet time per unit time is long. Also, when the time period is C seconds, instead of increasing the air jet time, it is possible to use the air jet simultaneously for multiple people. This can be said to apply S55 in Figure 14 during the C-second time period. Similarly, S56 in Figure 14 can be applied during the D-second time period.

[0094] Air jet operations on the day are carried out according to the air jet schedule created in advance.

[0095] As a concrete example, let's set C seconds to 20 seconds and D seconds to 10 seconds. During periods when the threshold S70 is exceeded, these periods are considered congested, and instead of increasing the air jet time per person, multiple people are allowed to enter the room at the same time. This reduces the total time required to pass through the air jet, or the waiting time for workers.

[0096] The cumulative air jet operating time per unit time period for each time slot on that day will be the most recent and historical cumulative air jet operating time.

[0097] Using this information, a new AirJet schedule for the following day is created.

[0098] The historical data used during creation can be from the previous week, or any other period, and can be set at the administrator's discretion.

[0099] The created air jet schedule may be automatically applied, or it may be automatically generated by the system, with the decision of whether or not to adopt it left to the administrator.

[0100] Furthermore, although only one threshold is set in Figure 15, multiple thresholds may be set. In that case, the air jet time and the number of people entering the room simultaneously may be set in multiple stages according to the thresholds. This will further reduce the total time required to pass through the air shower, or the waiting time for workers to enter the air shower, especially in large air jet systems.

[0101] As described above, according to the above technical concept, it is possible to achieve both a reduction in total waiting time to enter the room and dust removal.

[0102] As long as the ideas and concepts disclosed in the above descriptions are used, any modifications or similar examples thereof are also included within the scope of the present invention.

[0103] Furthermore, an example of the present invention described using the above embodiments can also be expressed as follows.

[0104] <Part 1> An air shower that has a function to determine the number of people entering the room, and adjusts the airflow, duration, or both of the air shower's fan based on the result of this determination. <Part 2> The air shower described in <Part 1> has a function to notify the number of people allowed to enter. <Part 3> The notification function is an air shower as described in <Part 2> that uses one of the following: numbers, colors, lights, images, pictograms, or sounds. <Part 4> The aforementioned number of entrants is determined by using either the actual measured value, the number of air shower users per unit time, or the air shower operating time per unit time, as described in <Part 1> of the air shower. <Part 5> The aforementioned determination is made based on whether the value is greater than or less than a specified value, as described in <Part 1> of the air shower. <Part 6> If the number of people entering the room exceeds the specified value, the air shower fan's airflow is increased, the duration is extended, or both are performed as described in <5> of the air shower. <Part 7> If the number of people entering the room falls below the specified value, the air shower described in <5> reduces the airflow of the air shower fan, shortens the duration, or does both. <Part 8> The air shower described in <Part 1>, wherein the determination of the number of people entering the room is performed using one of the following methods: person identification using a camera, person identification using an infrared sensor, person identification using an ID authentication function, or person identification by weight. <Part 9> The air shower described in <Part 5> determines the aforementioned specified value per unit time. <Part 10> The aforementioned specified value is set by referring to past specified value information for the air shower described in <Part 9>. <Part 11> The air shower described in <Item 9> overwrites the registered default value information if the value exceeds or falls below the aforementioned default value. <Part 12> The air shower described in <Part 10> manages the aforementioned specified values ​​through scheduling. <Part 13> The aforementioned specified value can be set from an external monitoring device via a communication line, as described in <Part 12>. <Part 14> The aforementioned specified values ​​are set based on the specified value information for each time period of the previous day, as described in <Part 12> of the air shower. <Part 15> The aforementioned specified values ​​are set based on the specified value information for each time period of the previous week for the air shower described in <Part 12>. <Part 16> Instead of the number of people entering the room, X1 is the cumulative air jet operating time per unit time for each time period in the past, and Y1 is the average cumulative air jet operating time per unit time in the past. For time periods when X1 exceeds Y1, multiple people are allowed to pass through, and the airflow of the air shower fan is increased, or the duration is extended, or both. This is the air shower described in <Part 4>. <Part 17> The determination of the time period in which X1 exceeds Y1 is made by comparing it with a value obtained by adding a constant to or multiplying Y1 by a constant, as described in <Part 16> of the air shower. <Part 18> The air shower described in <Part 16> uses X1 and Y1 to create pre-configured air jet settings for each time period. <Part 19> During the time period when multiple people are passing through, the air shower described in <Item 18> will notify that multiple people can enter using one of the following: numbers, colors, lights, images, pictograms, or sounds. <Part 20> The air shower described in <Part 19> measures the cumulative air jet operating time per unit time for each time period as X2, calculates the average cumulative air jet operating time per unit time based on X2 as Y2, and sets one or both of X2 and Y2 as a new X1 or Y1. [Explanation of symbols]

[0105] 100: Air shower enclosure 101: One Door 102:Display device 103: The other door 110: Cameras, sensors 120: Floorboards 121: Weight sensor 200: Information acquisition device 201: Command device 203: Fan motor 204: Door locking device 205: Storage device 206: Communication equipment 207: Monitoring device 208: Public communication line

Claims

1. An air shower that has a function to determine the number of people entering the room, and adjusts the airflow, duration, or both of the air shower's fan based on the result of this determination.

2. The air shower according to claim 1, which has a function to notify the number of people allowed to enter the room.

3. The air shower according to claim 2, wherein the notification function uses any of the following: numbers, colors, lights, images, pictograms, or sounds.

4. The air shower according to claim 1, wherein the number of people entering the room is determined by using an actual measurement, the number of air shower users per unit time, or the air shower operating time per unit time.

5. The air shower according to claim 1, wherein the determination is made based on whether it is greater than or less than a specified value.

6. The air shower according to claim 5, wherein if the number of people entering the room exceeds the specified value, the airflow of the air shower fan is increased, the duration is extended, or both are performed.

7. The air shower according to claim 5, wherein if the number of people entering the room falls below the specified value, the airflow of the air shower fan is reduced, the duration is shortened, or both are performed.

8. The air shower according to claim 1, wherein the determination of the number of people entering the room is performed using one of the following methods: person identification using a camera, person identification using an infrared sensor, person identification using an ID authentication function, or person identification by weight.

9. The air shower according to claim 5, wherein the aforementioned specified value is determined per unit time.

10. The air shower according to claim 9, wherein the aforementioned specified value is set by referring to past specified value information.

11. The air shower according to claim 9, which overwrites the registered specified value information if the value exceeds or falls below the specified value.

12. The air shower according to claim 10, which schedules and manages the aforementioned specified value.

13. The air shower according to claim 12, wherein the aforementioned specified value can be set from an external monitoring device via a communication line.

14. The air shower according to claim 12, wherein the aforementioned specified value is set based on the specified value information for each time period of the previous day.

15. The air shower according to claim 12, wherein the aforementioned specified value is set based on the specified value information for each time period of the previous week.

16. The air shower according to claim 4, wherein instead of the number of people entering the room, X1 is the cumulative air jet operating time per unit time for each time period in the past, and Y1 is the average cumulative air jet operating time per unit time in the past, and for time periods when X1 exceeds Y1, multiple people are allowed to pass through, and the airflow of the air shower fan is increased, or the duration is extended, or both.

17. The air shower according to claim 16, wherein the determination of the time period in which X1 exceeds Y1 is made by comparing it with a value obtained by adding a constant to or multiplying Y1 by a constant, and then reversing the result.

18. The air shower according to claim 16, wherein the settings for the air jets for each time period are created in advance using the aforementioned X1 and Y1.

19. The air shower according to claim 18, wherein during the time period when multiple people are passing through, the fact that multiple people can enter is notified using a number, color, lamp, image, pictogram, or sound.

20. The air shower according to claim 19, wherein X2 measures the cumulative air jet operating time per unit time for each time period, and Y2 calculates the average cumulative air jet operating time per unit time based on X2, and one or both of X2 and Y2 can be set as a new X1 or Y1.

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