JP2023133075A - Private room booth - Google Patents

Abstract

To provide a private room booth which can provide a user of a proper air-conditioning effect according to a situation of the user.SOLUTION: For the purpose of the present invention, a private room booth 1 in a certain form of the present disclosure comprises: a room space 3; an air duct unit 2 having an exhaust air duct 21 for exhausting air in the room space 3, and a circulation air duct 22 for making air in the room space 3 circulate; a blower 4 for sending out air to the exhaust air duct 21 and the circulation air duct 22; a gas sensor 5 for measuring a gas concentration of a prescribed gas contained in air in the room space 3; and a control part 10 for controlling the blower 4 and the air duct unit 2. When a circulation mode is set, the control part 10 acquires the gas concentration which is measured by the gas sensor 5, when an acquisition result is equal to or lower than a threshold, the control part operates the blower 4 by a first output in a ventilation mode, and when the acquisition result exceeds the threshold, the control part operates the blower 4 by a second output which is larger than the first output in the ventilation mode.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to private booths.

2. Description of the Related Art Air conditioners that supply air to a predetermined room are known. For example, Patent Document 1 discloses a technique for supplying air introduced into an air supply path into a smoking booth. In this technology, the smoking booth has a double structure with an inner panel and an outer panel, and a side panel is provided as a ventilation passage.The lower part of this ventilation passage is used as an air supply passage, and the lower part is partitioned as an exhaust passage. have The upper part of the inner panel is provided with a suction hole that communicates with the exhaust passage, and the lower part of the inner panel is provided with an outlet that supplies the air introduced into the air supply passage into the booth chamber.

Japanese Patent Application Publication No. 2006-349246

The inventors of the present application have obtained the following new understanding regarding private booths. It is desirable to provide adequate ventilation for private booths where users may stay for long periods of time. However, the amount of carbon dioxide emitted into the booth varies depending on the user of the booth, and insufficient or excessive ventilation may occur. The booth described in Patent Document 1 continuously performs a certain amount of ventilation in order to ventilate the smoking booth where the smoker stays only for a short time. Therefore, this booth is designed to adjust the ventilation amount according to the characteristics of the user. There is room for improvement from the perspective of controlling.

One of the objects of the present disclosure is to provide a private booth that can control the amount of ventilation according to the characteristics of the user.

In order to solve the above problems, a private booth according to an embodiment of the present invention has a living space where at least one person can stay, an exhaust air passage for exhausting the air in the living space to the outside, and a circulation space for circulating the air in the living space. an air duct unit having a circulating air duct, a blower that sends air to at least one of the exhaust air duct and the circulation air duct, and a gas sensor that measures the gas concentration of a predetermined gas contained in the air in a living space. and a control unit that controls the blower and the air path unit. The control unit operates in a circulation mode in which the air in the living space is circulated by controlling the air duct unit to close the exhaust air duct and opening the circulation air duct, and an operation to control the air duct unit to open the exhaust air duct. and a ventilation mode in which the air in the living space is ventilated by closing the circulation air path.Acquires the gas concentration measured by the gas sensor in the circulation mode, and when the obtained result is below a threshold value, the ventilation mode The blower is operated with a first output, and when the obtained result exceeds a threshold value, the blower is operated with a second output larger than the first output in ventilation mode.

Note that expressions of the present disclosure converted between methods, devices, systems, recording media, computer programs, etc. are also effective as aspects of the present disclosure.

According to the present disclosure, it is possible to provide a private booth that can control the amount of ventilation according to the characteristics of the user.

FIG. 1 is a diagram schematically showing an example of a private booth in the first embodiment. FIG. 2 is a block diagram showing the system configuration of the private booth in the first embodiment. FIG. 3 is a timing chart showing an example of the operation of the private booth in the first embodiment. FIG. 4 is a flowchart showing an example of the operation of the private booth in the first embodiment. FIG. 5 is a side view showing the configuration of a private booth in the second embodiment. FIG. 6 is a partial front view showing the configuration of a private booth in the second embodiment.

Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the accompanying drawings. In the embodiments and modified examples, the same or equivalent components and members are given the same reference numerals, and redundant explanations will be omitted as appropriate. Further, the dimensions of members in each drawing are shown enlarged or reduced as appropriate to facilitate understanding. Furthermore, in each drawing, some members that are not important for explaining the embodiments are omitted.

Also, although ordinal terms such as first, second, etc. are used to describe various components, these terms are used only to distinguish one component from another; The components are not limited by this.

(Embodiment 1)
A private booth 1 according to a first embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 is a diagram schematically showing an example of a private booth 1. As shown in FIG. FIG. 2 is a block diagram showing the private booth 1. As shown in FIG. The private booth 1 includes a living space 3, an air path unit 2, a blower 4, a gas sensor 5, a control section 10, and an operation input section 35.

The living room space 3 is a space where at least one person can stay. Although there is no particular limitation on the living space 3, the living space 3 in this example is a private room for one person equipped with a chair, desk, etc. for remote work or study. As an example, the living room space 3 includes business equipment such as a chair and a desk.

The blower 4 is an electric fan that can send air to at least one of the exhaust air path 21 and the circulation air path 22 under the control of the control unit 10 . The blower 4 of this example can send air from the living room space 3 sucked in from the suction section 41 to one of the exhaust air path 21 and the circulation air path 22 from the delivery section 42 via the air path unit 2. For example, a sirocco fan can be used as the blower 4. The blower 4 may include a filter for purifying the air. The blower 4 can be placed, for example, under a desk or a chair in the living room space 3.

The air passage unit 2 includes an exhaust air passage 21, a circulation air passage 22, and an air passage switching section 23. The air passage unit 2 can be placed, for example, under a desk or a chair in the living room space 3. The exhaust air path 21 is an air path for exhausting air in the living room space 3 to the outside. In the example of FIG. 1, the upstream side of the exhaust air passage 21 is connected to the first outlet part 231 of the air passage switching unit 23, and the downstream side of the exhaust air passage 21 is connected to the exhaust port 24 under the floor. The air sent out from the first outlet section 231 is exhausted to the outside through the exhaust port 24.

The circulation air passage 22 is an air passage for circulating air in the living room space 3. In the example of FIG. 1, the upstream side of the circulating air passage 22 is connected to the second outlet part 232 of the air passage switching section 23, and the downstream side of the circulating air passage 22 communicates with the living room space 3. The air sent out from the second outlet section 232 is supplied to the living room space 3.

The air passage switching unit 23 can switch the air passage configuration by opening and closing the exhaust air passage 21 and the circulation air passage 22 based on the control of the control unit 10. The air path switching section 23 can be configured to include, for example, a solenoid valve. The air path switching section 23 has an inlet section 233, a first outlet section 231, and a second outlet section 232. The inlet section 233 is connected to the delivery section 42 of the blower 4 . The air path switching section 23 supplies the air supplied to the inlet section 233 to either the first outlet section 231 or the second outlet section 232.

The air passage unit 2 operates in a circulation mode in which the exhaust air passage 21 is closed and the circulation air passage 22 is opened in order to circulate the air in the living space 3, and in a circulation mode in which the exhaust air passage 21 is opened in order to ventilate the air in the living space 3. It has a ventilation mode in which it opens and closes the circulation air passage 22. The air passage unit 2 can switch between circulation mode and ventilation mode based on the control of the control unit 10.

In the circulation mode, the air path switching section 23 closes the first outlet section 231 and allows the air sent from the blower 4 to the inlet section 233 to pass through the second outlet section 232 to the circulation air path 22 . In the circulation mode, air in the living room space 3 is sucked into the suction section 41 of the blower 4, and is supplied from the delivery section 42 of the blower 4 to the living room space 3 through the circulating air passage 22, thereby performing circulation. At this time, since the amount of air in the living room space 3 is constant, only a small amount of air enters the living room space 3 from the air supply port 25.

In the ventilation mode, the air path switching section 23 closes the second outlet section 232 and allows the air sent from the blower 4 to the inlet section 233 to pass through the first outlet section 231 to the exhaust air path 21 . In the ventilation mode, air in the living room space 3 is sucked into the suction section 41 of the blower 4, and is exhausted to the outside from the delivery section 42 of the blower 4 through the exhaust air passage 21 and the exhaust port 24. At this time, since the living room space 3 becomes a negative pressure, outside air is sucked into the living room space 3 through the air supply port 25, and ventilation is performed.

The gas sensor 5 measures the concentration of a predetermined type of gas contained in the air in the living room space 3 . The gas sensor 5 measures the concentration of a predetermined type of gas based on a known principle. The gas sensor 5 can be placed near a desk in the living room space 3, for example.

In this example, the predetermined type of gas includes carbon dioxide. People with a large metabolic rate may emit a large amount of carbon dioxide and be sensitive to heat. Therefore, by quantifying the concentration of carbon dioxide, which is correlated with the metabolic rate, and using it for ventilation control, it is possible to reduce the amount of carbon dioxide in the living space 3. Concentration can be maintained below a certain level. As a result, the user 8 (hereinafter simply referred to as "user 8") in the living room space 3 can be provided with a comfortable thermal and cold environment.

In this example, the predetermined type of gas includes a selected gas selected in advance from among gases whose odor can be perceived by humans (hereinafter referred to as "odorous gas"). Examples of odorous gases include ethyl acetate, ammonia, isovaleric acid, nonenal, etc., which are caused by body odor and sweat odor. If the concentration of odor gas is high, the comfort of the user 8 will be reduced. Therefore, by quantifying the concentration of the odor gas and using it for ventilation control, the concentration of the odor gas in the living room space 3 can be maintained below a certain level. As a result, it is possible to provide the user 8 with a comfortable environment regarding odor.

The control unit 10 will be explained. Each of the functional blocks shown in FIG. 2 can be realized in terms of hardware using elements and mechanical devices such as a computer's CPU (Central Processing Unit), and in terms of software, it can be realized by a computer program. Here we describe the system that will be realized by these collaborations. Therefore, those skilled in the art who have been exposed to this specification will understand that these functional blocks can be realized in various ways by combining hardware and software.

The control unit 10 controls the operations of the blower 4 and the air passage unit 2, and also controls the private booth 1 in an integrated manner. The control unit 10 can be placed, for example, under a desk or a chair in the living room space 3. The control unit 10 in this example mainly includes a gas concentration acquisition unit 11, an air blowing control unit 12, an air path control unit 13, a timing management unit 14, an operation acquisition unit 15, and a communication unit 16. .

The gas concentration acquisition unit 11 can acquire the gas concentration measured by the gas sensor 5. The air blowing control unit 12 can control the air blowing output of the air blower 4. The air path control section 13 can switch the air path unit 2 between the circulation mode and the ventilation mode by controlling the air path switching section 23. The timing management section 14 can manage the timing at which the air path unit 2 is switched between the circulation mode and the ventilation mode.

The concentration of gases emitted by people changes over time. For example, by quantifying this gas concentration at predetermined intervals and using it for ventilation control, a comfortable environment in the living space 3 can be maintained for a long time. For this reason, the control unit 10 of the embodiment includes a timing management unit 14 for switching the air path unit 2 between the circulation mode and the ventilation mode at a predetermined timing.

The timing management unit 14 holds a preset switching schedule and can alternately switch between the circulation mode and the ventilation mode based on the schedule. As an example, as shown in FIG. 3, the timing management unit 14 switches from the ventilation mode to the circulation mode every preset period P1. The period P1 can be set through experiments, simulations, etc. from the viewpoint of ensuring a desired level of comfort in the living room space 3.

The operation acquisition unit 15 acquires an operation input from the user 8 to the operation input unit 35 (for example, an ON/OFF operation of the blower 4). The operation input section 35 receives an operation input from the user 8 and provides the input result to the operation acquisition section 15 through a wired or wireless information transmission means. The operation input unit 35 can also function as a remote control provided in the living room space 3.

The communication unit 16 exchanges information with external devices via a network NW such as the Internet, a LAN such as Wi-Fi (registered trademark), short-range communication such as Bluetooth (registered trademark), NFC (near field communication), etc. can. Examples of external devices include a host control device, a server, and a mobile terminal (for example, the smartphone 36).

In the above description, an example was shown in which the operation input unit 35 is an independent device, but these can also be realized by a smartphone 36 that is a mobile terminal carried by the user 8. That is, by communicating with the control unit 10 through the communication unit 16, the smartphone 36 can provide input information to the control unit 10 and receive information from the control unit 10. As a result, the smartphone 36 can be used as the operation input section 35.

An example of ventilation control for the private booth 1 will be explained with reference to a timing chart. FIG. 3 is a timing chart showing an example of ventilation control of the private booth 1. FIG. 3(A) shows the mode of the air path unit 2 (hereinafter also referred to as "air path mode"). FIG. 3(B) shows the obtained results of the gas concentration measured by the gas sensor 5 when the circulation mode is set. FIG. 3(C) shows the output of the blower 4. FIG. 3(D) shows the timing of ventilation control.

The ventilation mode of the private booth 1 changes the output of the blower 4 (first output F1 or second output F2) according to the obtained gas concentration result. In the circulation mode of the private booth 1, the output of the blower 4 can be set to be the same as the ventilation mode or to a different output (third output F3). Here, the output of the blower 4 may be the air pressure sent out by the blower 4, or may be the amount of air sent out per unit time of the blower 4. In this example, the output of the blower 4 is the amount of air sent out per unit time.

The private booth 1 is normally operated in the ventilation mode as shown in FIG. 3(A), and is switched to the circulation mode at the timing (T1 to T3) of acquiring the gas concentration. Assuming that the blower 4 is initially operated at the first output F1, the obtained result of the gas concentration during the measurement period E at the first timing T1 is below the threshold T, so as shown in FIG. 3(C), In the ventilation mode leading to the second timing T2, the blower 4 is operated at the first output F1.

Since the obtained gas concentration result during the measurement period F at the second timing T2 exceeds the threshold T, the blower 4 is operated at the second output F2 in the subsequent ventilation mode, as shown in FIG. 3(C). Ru.

Since the obtained result of the gas concentration during the measurement period G at the third timing T3 is below the threshold value T, the blower 4 is operated at the first output F1 in the subsequent ventilation mode, as shown in FIG. 3(C). . In this way, in the private booth 1, a routine is repeated in which the output of the blower 4 in the ventilation mode is changed based on the gas concentration in the circulation mode. Further, in the private booth 1, the blower 4 continues to operate at the second output F2 until the obtained gas concentration becomes equal to or less than the threshold value T.

As an example, the second output F2 of the blower 4 in the ventilation mode can be set in a range of 110% or more and 200% or less of the first output F1. Further, the third output F3 of the blower 4 in the circulation mode can be set in a range of 50% or more and 150% or less of the first output F1.

An example of the gas concentration threshold T for various gases will be explained. (1) The threshold value T of the gas concentration of carbon dioxide can be set to 800 ppm. (2) The threshold value T of the gas concentration of ethyl acetate can be set to 0.3 ppm. (3) The ammonia gas concentration threshold T can be set to 0.1 ppm. (4) The threshold value T of the gas concentration of isovaleric acid can be set to 0.00005 ppm. (5) The threshold value T of the gas concentration of nonenal can be set to 0.001 ppm.

An example of the operation of the private booth 1 will be explained with reference to a flowchart. FIG. 4 is a flowchart showing the operation S110 of the private booth 1. Operation S110 begins in ventilation mode. When operation S110 is started, the control unit 10 determines whether a first timing T1 for switching to the circulation mode has been reached (step S111). If it is not the switching timing (N in step S111), the control unit 10 returns the process to the beginning of step S111 and repeats step S111.

When the switching timing has been reached (Y in step S111), the control unit 10 switches to the circulation mode (step S112). After executing step S112, the control unit 10 acquires the gas concentration measured by the gas sensor 5 when the circulation mode is set (step S113). In this step, the gas concentration can be obtained after maintaining the circulation mode for a predetermined period of time. This maintenance period can be set by experiment, simulation, etc. from the viewpoint of ensuring a desired level of gas concentration measurement accuracy.

After executing step S113, the control unit 10 determines whether the gas concentration acquired from the gas sensor 5 exceeds the threshold T (step S114).

When the acquired gas concentration is less than or equal to the threshold value T (N in step S114), the control unit 10 switches to ventilation mode (step S115) and operates the blower 4 at the first output F1 (step S116). After executing step S116, the control unit 10 returns the process to the beginning of step S111 and repeats the process from step S111 onwards.

If the obtained gas concentration exceeds the threshold T (Y in step S114), the control unit 10 switches to ventilation mode (step S117) and operates the blower 4 at the second output (step S118). After executing step S118, the control unit 10 returns the process to the beginning of step S111 and repeats the process from step S111 onwards.

Each step of operation S110 is an example, and various modifications are possible.

The features of the private booth 1 configured as described above will be explained. The private booth 1 of the first embodiment has a living room space 3 in which at least one person can stay, an exhaust air passage 21 for exhausting the air in the living room space 3 to the outside, and a circulation passageway for circulating the air in the living room space 3. an air path unit 2 having an air path 22; a blower 4 that sends air to at least one of the exhaust air path 21 and the circulation air path 22; and detecting the gas concentration of a predetermined gas contained in the air in the living space 3. and a control unit 10 that controls the blower 4 and the air path unit 2. The air passage unit 2 operates in a circulation mode in which the exhaust air passage 21 is closed and the circulation air passage 22 is opened in order to circulate the air in the living space 3, and in a circulation mode in which the exhaust air passage 21 is opened in order to ventilate the air in the living space 3. It has a ventilation mode in which it opens and closes the circulation air passage 22. The control unit 10 acquires the gas concentration detected by the gas sensor 5 when the circulation mode is set, and when the acquired result is less than the threshold T, the control unit 10 operates the blower 4 at the first output F1 in the ventilation mode, and controls the acquired result. exceeds the threshold T, the blower 4 is operated in the ventilation mode with a second output F2 that is larger than the first output F1.

According to this configuration, depending on the gas concentration in the living room space 3, when the gas concentration is high (gas concentration>threshold value T), the blower 4 outputs a larger output than when the gas concentration is low (gas concentration≦threshold value T). Since the user 8 is operated, ventilation control can be performed according to the amount of carbon dioxide emitted by the user 8. As a result, the amount of ventilation is controlled according to the characteristics of the user 8, so that the comfort of the living room space 3 can be improved. Further, when the gas concentration is low, the blower 4 is operated at a low output, so that unnecessary power consumption can be reduced and an increase in running costs can be suppressed.

In addition, if you measure the gas concentration in ventilation mode while introducing outside air into the living space 3, the measurement result of the gas concentration will be unstable due to the influence of the outside air, but when the air in the living space 3 is circulated in the circulation mode. Since the gas concentration is measured at , the influence of the outside air is small and the variation in the gas concentration measurement results can be reduced. As a result, the comfort of the living space 3 can be improved by performing ventilation control based on stable measurement results.

An overview of one aspect of the present disclosure is as follows. The private booth (1) of this embodiment includes a living room space (3) where at least one person can stay, an exhaust air passage (21) for exhausting air from the living room space (3) to the outside, and a living room space (3). an air passage unit (2) having a circulation air passage (22) for circulating air; and a blower (4) for sending air to at least one of the exhaust air passage (21) and the circulation air passage (22) , a gas sensor (5) that measures the gas concentration of a predetermined gas contained in the air in the living space (3), and a control unit (10) that controls the blower (4) and the air path unit (2). . The control unit (10) controls the air passage unit (2) to operate in a circulation mode in which the air in the living space (3) is circulated by closing the exhaust air passage (21) and opening the circulation air passage (22). and a ventilation mode in which the air in the living space (3) is ventilated by controlling the air path unit (2) to open the exhaust air path (21) and close the circulation air path (22). , obtain the gas concentration measured by the gas sensor (5) in the circulation mode, and when the obtained result is below the threshold, operate the blower (4) at the first output in the ventilation mode, and when the obtained result exceeds the threshold; In the ventilation mode, the blower (4) is operated with a second output larger than the first output.

As an example, the predetermined gas mentioned above includes carbon dioxide.

As an example, the above-mentioned predetermined gas includes a selected gas selected in advance from gases whose odor can be perceived by humans.

As an example, the control unit 10 switches the air passage unit (2) between a circulation mode and a ventilation mode at a predetermined timing.

(Embodiment 2)
Embodiment 2 will be described below with reference to FIGS. 5 and 6. FIG. 5 is a side view showing the configuration of the private booth 1a. FIG. 6 is a partial front view showing the configuration of the private booth 1a.

[overall structure]
In the second embodiment, the private booth 1a includes an air passage unit 2a instead of the air passage unit 2.

The air passage unit 2a realizes an air passage configuration for each of the circulation mode and the ventilation mode in the private booth 1a, and is arranged in the internal space provided in the chair. The air passage unit 2a has an outdoor exhaust air passage 21a and an indoor exhaust air passage 21b instead of the exhaust air passage 21.

The outdoor exhaust air passage 21a is arranged downstream of the exhaust air passage switching unit 27 in the ventilation mode, and has one end connected to the exhaust outlet 272 and the other end connected to the outdoor exhaust port 24a.

The indoor exhaust air passage 21b is arranged upstream of the exhaust air passage switching unit 27 in the circulation mode and the ventilation mode, and has one end connected to the exhaust side inlet 271 and the other end connected to the indoor exhaust port 24b. .

The air passage unit 2a has an outdoor exhaust port 24a and an indoor exhaust port 24b instead of the exhaust port 24.

The outdoor exhaust port 24a is an opening that is disposed on the floor that constitutes the living room space 3 and is used to exhaust the air that has been conveyed to the outdoor exhaust air passage 21a from the living room space 3.

The indoor exhaust port 24b is an opening that is disposed below the seat of the chair and sucks air from the living room space 3 into the indoor exhaust air passage 21b.

The air path unit 2a includes an air supply side air path switching section 26 and an exhaust side air path switching section 27 instead of the air path switching section 23.

The air supply side air passage switching unit 26 can switch the air passage configuration by opening and closing the circulation air passage 22, the outdoor air supply air passage 28a, and the indoor air supply air passage 28b based on the control of the control unit 10a. The air supply side air path switching section 26 has an air supply side inlet section 261, an air supply side outlet section 262, and a circulation side outlet section 263.

The air supply side inlet portion 261 communicates with the air supply port 25 by connecting to the outdoor air supply air passage 28a.

The air supply side outlet part 262 communicates with the suction part 41 provided in the blower 4 by connecting to the indoor air supply air path 28b.

The circulation side outlet section 263 is connected to the circulation air passage 22 and thereby communicates with the circulation side inlet section 273 provided in the exhaust side air passage switching section 27 .

The exhaust side air passage switching unit 27 can switch the air passage configuration by opening and closing the circulation air passage 22, the outdoor exhaust air passage 21a, and the indoor exhaust air passage 21b based on the control of the control unit 10a. The exhaust side air path switching section 27 has an exhaust side inlet section 271, an exhaust side outlet section 272, and a circulation side inlet section 273.

The exhaust side inlet portion 271 communicates with the indoor exhaust port 24b by connecting to the indoor exhaust air passage 21b.

The exhaust side outlet portion 272 communicates with the outdoor side exhaust port 24a by connecting to the outdoor side exhaust air passage 21a.

The circulation side inlet section 273 communicates with the circulation side outlet section 263 provided in the air supply side air path switching section 26 by connecting to the circulation air path 22 .

The air passage unit 2a has an air supply air passage 28 for conveying external air to the living room space 3.

The air supply air passage 28 has an outdoor air supply air passage 28a and an indoor air supply air passage 28b.

The outdoor air supply air passage 28a is arranged upstream of the air supply air passage switching section 26 in the ventilation mode, and has one end connected to the air supply side inlet section 261 and the other end connected to the air supply port 25.

The indoor air supply air passage 28b is arranged downstream of the air supply air passage switching unit 26 in the circulation mode and the ventilation mode, and has one end connected to the air supply outlet 262 and the other end connected to the suction unit 41. .

The air passage unit 2a has a nozzle side air passage 29.

The nozzle-side air passage 29 is arranged upstream of the blower 4 in the circulation mode and the ventilation mode, and has one end connected to a delivery section 42 provided in the blower 4 and the other end connected to the blower nozzle 50. The nozzle side air passage 29 extends along a wall surface 33 connected to a ceiling surface 31 and a floor surface 32 that constitute the living room space 3, and a part thereof is exposed from the chair. When a plurality of blower nozzles 50 are arranged, the nozzle side air passage 29 is configured to include a branch pipe (such as a Y branch pipe) used to branch and merge the air flow, and is configured to include a branch pipe (such as a Y branch pipe) that is used to branch and merge the air flow. can be distributed to a plurality of blow nozzles 50.

Unlike the arrangement in the first embodiment, the air supply port 25 is arranged in an internal space provided in the chair.

Unlike the first embodiment, the circulation air passage 22 has one end connected to the circulation side inlet part 273 and the other end connected to the circulation side outlet part 263, so that the air supply side air passage switching part 26 and the exhaust side are connected. It communicates with the air path switching section 27.

Based on the control of the control unit 10a, the air passage unit 2a closes the outdoor exhaust air passage 21a and the outdoor air supply air passage 28a, and closes the indoor air exhaust air passage 21b, the circulation air passage 22, and the indoor air supply air passage. By opening 28b, an air path configuration for generating an air flow (AF1 in FIG. 5) circulating in the living room space 3 is realized.

The air passage unit 2a closes the circulation air passage 22 under the control of the control unit 10a, and closes the outdoor air exhaust air passage 21a, the indoor air exhaust air passage 21b, the outdoor air supply air passage 28a, and the indoor air supply air passage. By opening 28b, an air path configuration for generating an air flow (AF2 in FIG. 5) for ventilating the air in the living room space 3 is realized.

The private booth 1a includes four blow nozzles 50 arranged in parallel near the top surface 31. Here, the vicinity of the top surface 31 indicates the side closer to the top surface 31 than the middle between the top surface 31 and the floor surface 32, and more specifically, the area between the top surface 31 and the blower nozzle 50. Indicates that a predetermined space that allows ventilation is provided.

In the circulation mode, the blower nozzle 50 directs the airflow AF1 guided through the indoor exhaust air path 21b, the circulation air path 22, the indoor air supply air path 28b, and the nozzle side air path 29 from the top surface 31 side to the floor surface 32. Blow out towards. Further, in the ventilation mode, the blowing nozzle 50 blows out the airflow AF2 guided through the supply air path 28 and the nozzle side air path 29 from the top surface 31 side toward the floor surface 32. The blower nozzle 50 is erected from one wall surface 33a forming the wall surface 33 toward an opposing wall surface 33b forming the wall surface 33 and disposed opposite to the one wall surface 33a, and has a rectangular shape having a longitudinal direction in the direction in which it is erected. It is formed. The blower nozzle 50 has a nozzle outlet 51 .

The nozzle outlet 51 is formed in a rectangular shape having a short side 51a and a long side 51b, and is an opening that blows out the airflow AF1 or the airflow AF2 into the living room space 3 as an airflow AF3 shown in FIG. The long side 51b is provided along the direction in which the blower nozzle 50 is erected, that is, the direction from one wall surface 33a to the opposite wall surface 33b.

The blow nozzles 50 are arranged at equal intervals along the short side 51a.

The attraction standby space 60 is a space formed with a predetermined interval between the upper end of the blow nozzle 50 and the top surface 31. The attraction waiting space 60 is a three-dimensional space that is horizontally connected (continuous) along the top surface 31 , and its top surface has approximately the same area as the top surface 31 .

The induced air path 70 is a space provided between the air blowing nozzles 50 arranged in parallel, and guides the induced air flow (AF4 in FIG. 6) from the top surface 31 toward the floor surface 32.

The induced airflow AF4 is an airflow generated by being attracted by the air flow (airflow AF3) blown out from the blower nozzle 50, and is a flow of air that flows from the induced waiting space 60 toward the floor surface 32 via the induced air path 70. It is a flow.

The control method for the air path unit 2a is different from that in the first embodiment. Therefore, the private booth 1a includes a control section 10a.

The control section 10a differs from the first embodiment in that it includes an air path control section 13a instead of the air path control section 13, and is the same as the first embodiment in other respects. In the control unit 10a, descriptions of the same components as in the first embodiment will be omitted.

The air path control section 13a can switch the air path unit 2a between the circulation mode and the ventilation mode by controlling the air supply side air path switching section 26 and the exhaust side air path switching section 27.

[Features etc.]
The features of the private booth 1a configured as described above will be explained.

In the private booth 1a, air flow (airflow AF3 and induced airflow AF4) directed from the top surface 31 toward the floor surface 32 is generated by the blower nozzle 50 provided near the top surface 31, so that air flows in the living room space 3. It is possible to suppress the creation of a space (space where air stagnates) where there is no (or where air flow is small) (space where air stagnates). As a result, in the circulation mode, by suppressing bias in the gas concentration distribution in the living space 3 and increasing uniformity, ventilation control can be performed based on more stable measurement results, making the living space 3 more comfortable. can further improve performance.

Further, by combining the induced airflow AF4 with the airflow AF3, an airflow with high straightness along the blowing direction can be obtained. By increasing the straightness of the airflow, the attenuation of wind speed in the direction of movement (direction from the ceiling 31 to the floor 32) is suppressed, thereby further suppressing the creation of a space in which air stagnates in the living space 3. can do. As a result, in the circulation mode, it is possible to further improve the uniformity of the gas concentration in the living space 3, and it is also possible to perform ventilation control based on stable measurement results, further improving the comfort of the living space 3. can do.

The present disclosure has been described above based on Embodiment 1 and Embodiment 2. It will be understood by those skilled in the art that this example is merely an example, and that various modifications can be made to the combinations of these components or processing processes, and that such modifications are also within the scope of the present disclosure. .

[Modified example]
Modifications will be described below. In the drawings and description of the modification, the same or equivalent components and members as in the embodiment are given the same reference numerals. Explanations that overlap with those of the embodiment will be omitted as appropriate, and configurations that are different from the first embodiment will be mainly explained.

In the description of the embodiment, an example was shown in which it is determined whether the gas concentration exceeds the threshold T using the result of one measurement of the gas concentration, but the present invention is not limited to this. For example, the average value of the results of multiple gas concentration measurements may be used as the gas concentration for comparison, and it may be determined whether or not this exceeds the threshold value T. For example, the increase value of the gas concentration per unit time may be specified, the specified result may be used as the gas concentration for comparison, and it may be determined whether or not this exceeds the threshold value T. As an example, when the increase value of the gas concentration of carbon dioxide per unit time is used as the gas concentration for comparison, the threshold value T can be set to 50 ppm/min. By using the increased gas concentration value to determine, ventilation can be increased to provide more comfort before the gas concentration rises to an uncomfortable level.

In the description of the embodiment, an example was shown in which the concentration of each component of the odor gas is determined based on a threshold value, but the present invention is not limited thereto. For example, an odor sensor may be used as the gas sensor 5 to measure the gas concentration, and the measurement results may be determined based on a threshold value. The threshold value in this case can be set to a density lower than the density that the user 8 feels uncomfortable based on experiments, simulations, and the like.

Any combination of the above constituent elements is also effective as an aspect of a technical idea that abstracts the embodiments and modifications. For example, an embodiment may be combined with any explanatory matter of another embodiment, or a modified example may be combined with any explanatory matter of the embodiment and other modified examples.

The embodiments and modifications have been described above. In understanding the technical idea that abstracts the embodiments and modifications, the technical idea should not be interpreted to be limited to the contents of the embodiments and modifications. The embodiments and modifications described above are merely specific examples, and many design changes such as changing, adding, or deleting components are possible. In the examples, contents that allow such design changes are emphasized by adding the notation "Example". However, design changes are allowed even if there is no such notation.

The private booth according to the present disclosure can be used as a private room for work or study.

1 Private booth 1a Private booth 2 Air path unit 2a Air path unit 21 Exhaust air path 21a Outdoor exhaust air path 21b Indoor exhaust air path 22 Circulation air path 23 Air path switching section 231 First outlet section 232 Second outlet section 233 Inlet section 24 Exhaust port 24a Outdoor side exhaust port 24b Indoor side exhaust port 25 Air supply port 26 Air supply side air path switching section 261 Air supply side inlet section 262 Air supply side outlet section 263 Circulation side exit section 27 Exhaust side air path switching section Section 271 Exhaust side inlet section 272 Exhaust side outlet section 273 Circulation side inlet section 28 Air supply air path 28a Outdoor air supply air path 28b Indoor air supply air path 29 Nozzle side air path 3 Living room space 31 Top surface 32 Floor surface 33 Wall surface 33a - Wall surface 33b Opposing wall surface 4 Air blower 41 Suction section 42 Sending section 5 Gas sensor 8 User 10 Control section 10a Control section 11 Gas concentration acquisition section 12 Air blowing control section 13 Air path control section 13a Air path control section 14 Timing management section 15 Operation acquisition section 16 Communication unit 35 Operation input unit 36 Smartphone 50 Air blowing nozzle 51 Nozzle outlet 51a Short side 51b Long side 60 Induced waiting space 70 Induced air path F1 First output F2 Second output F3 Third output T1 First timing T2 Second timing T3 Third timing E Measurement period F Measurement period G Measurement period T Threshold

Claims (7)

A living space where at least one person can stay,
an air passage unit having an exhaust air passage for exhausting air in the living space to the outside, and a circulation air passage for circulating air in the living space;
a blower that sends air to at least one of the exhaust air path and the circulation air path;
a gas sensor that measures the gas concentration of a predetermined gas contained in the air in the living space;
a control unit that controls the blower and the air path unit;
Equipped with
The control unit controls a circulation mode in which air in the living space is circulated by controlling the air duct unit to close the exhaust air duct and opening the circulation air duct, and controls the air duct unit. a ventilation mode in which the air in the living space is ventilated by an operation of opening the exhaust air passage and an operation of closing the circulation air passage;
Obtaining the gas concentration measured by the gas sensor in the circulation mode, when the obtained result is below a threshold value, operate the blower at a first output in the ventilation mode, and when the obtained result exceeds the threshold value, The private booth is configured to operate the blower at a second output higher than the first output in the ventilation mode. The predetermined gas includes carbon dioxide.
The private booth according to claim 1. The predetermined gas includes a selected gas selected in advance from gases whose odor can be detected by humans.
The private booth according to claim 1 or 2. The control unit switches the air path unit between the circulation mode and the ventilation mode at a predetermined timing.
A private booth according to any one of claims 1 to 3. A blowing nozzle installed near a top surface constituting the living room space and blowing out airflow guided through at least the circulation air path from the side of the top surface toward a floor surface forming the living space. Private booth described in item 1. The blow nozzle is
The private booth according to claim 5, further comprising a nozzle outlet having short sides and long sides and blowing out the airflow. The blow nozzle is
The private booth according to claim 6, wherein a plurality of private booths are arranged in parallel along the direction of the short side.

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