WO2022091439A1

WO2022091439A1 - Blower device

Info

Publication number: WO2022091439A1
Application number: PCT/JP2021/004954
Authority: WO
Inventors: 和宏谷口; 一平小田; 篤長田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2020-10-30
Filing date: 2021-02-10
Publication date: 2022-05-05
Also published as: JPWO2022091439A1

Abstract

A blower device (10) comprises a pair of long ducts (20) arranged parallel to each other, and a first blower (30) that is positioned between the pair of ducts (20) and blows air into each of the pair of ducts (20). Each of the pair of ducts (20) is provided with a long jet (23), along the longitudinal direction thereof, through which an airflow is jetted in a first direction by using air blowing.

Description

Blower

The present invention relates to a blower.

Various techniques for generating airflow in space have been proposed. Patent Document 1 discloses a blower assembly for generating an air flow in a room.

Japanese Unexamined Patent Publication No. 2012-132459

The present invention provides a blower capable of blowing out an air flow having excellent straightness.

The blower device according to one aspect of the present invention is a first blower that is located between a pair of long ducts arranged in parallel and the pair of ducts and blows air into each of the pair of ducts. Each of the pair of ducts is provided with a long outlet along the longitudinal direction of the duct, and an outlet for blowing out airflow toward the first direction by the ventilation.

The blower according to one aspect of the present invention can blow out an air flow having excellent straightness.

FIG. 1 is a diagram showing a blower device according to an embodiment and a space in which the blower device is installed. FIG. 2 is a schematic diagram for explaining the operation of the blower according to the embodiment. FIG. 3 is an external perspective view of the blower device according to the embodiment. FIG. 4 is a top view, a front view, a bottom view, and a side view of the blower device according to the embodiment. FIG. 5 is a block diagram showing a functional configuration of the blower device according to the embodiment. FIG. 6 is a flowchart of an operation example 1 of the blower according to the embodiment. FIG. 7 is a flowchart of the operation example 2 of the blower according to the embodiment. FIG. 8 is a flowchart of an operation example 3 of the blower according to the embodiment. FIG. 9 is a flowchart of an operation example 4 of the blower according to the embodiment. FIG. 10 is a flowchart of an operation example 5 of the blower according to the embodiment. FIG. 11 is a flowchart of an operation example 6 of the blower according to the embodiment. FIG. 12 is a diagram showing configuration example 1 of the airflow control system according to the embodiment. FIG. 13 is a top view of the desk on which the shapes of the pair of outlets are projected. FIG. 14 is a diagram showing configuration example 2 of the airflow control system according to the embodiment. FIG. 15 is a diagram showing a configuration example 3 of the airflow control system according to the embodiment.

Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that all of the embodiments described below show comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, the order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the components in the following embodiments, the components not described in the independent claims are described as arbitrary components.

Note that each figure is a schematic diagram and is not necessarily exactly illustrated. Further, in each figure, the same reference numerals may be given to substantially the same configurations, and duplicate explanations may be omitted or simplified.

(Embodiment)
[Rough configuration]
First, the configuration of the blower device according to the embodiment will be described. FIG. 1 is a diagram showing a blower device according to an embodiment and a space in which the blower device is installed. FIG. 2 is a schematic diagram for explaining the operation of the blower according to the embodiment.

As shown in FIGS. 1 and 2, the blower device 10 according to the embodiment is a device installed on the ceiling 83 of the space 80 and blows out an air flow downward. The blower device 10 includes a pair of ducts 20 arranged in parallel, a first blower 30, and a second blower 40. In FIG. 2, the first blower 30 and the second blower 40 are not shown.

The first blower 30 and the second blower 40 blow air into the pair of ducts 20, so that each of the pair of ducts 20 blows an air flow downward from the outlet 23. Then, the space 81 between the pair of ducts 20 becomes a negative pressure, and the air in the space 82 above the pair of ducts 20 is attracted to the space 81. As a result, the blower device 10 can blow out an airflow having excellent straightness, which is a combination of the airflow blown out from the outlets 23 of the pair of ducts 20 and the airflow based on the attracted air, downward. The blower device 10 can form a so-called air curtain (sheet-like airflow) in the space 80 by blowing out such an airflow having excellent straightness. The sheet-shaped airflow is schematically illustrated by a broken line arrow in FIG. 1 and a dot in FIG.

The blower 10 is installed above furniture such as a desk 90, and blows airflow toward an opening 91 provided in the desk 90, for example. This forms an air curtain between the two users sitting across the opening 91. According to the air curtain formed by the blower device 10, it is possible to prevent the droplets emitted by one user (shown by small circles in FIG. 2) from reaching the other user.

The droplets emitted by one user may contain infectious substances, and the droplets containing infectious substances contribute to the spread of infectious diseases. The blower 10 can suppress the spread of the infectious disease by suppressing the droplets emitted by the user from reaching the other user. In the configuration in which the air curtain is formed by the air flow (downflow) from the upper side to the lower side like the blower device 10, the droplets fly up as compared with the configuration in which the air curtain is formed by the air flow (upflow) from the lower side to the upper side. Hateful. Therefore, the effect of suppressing the spread of infectious diseases by the blower 10 is high.

[Constitution]
Next, a more specific configuration of the blower device 10 will be described. FIG. 3 is an external perspective view of the blower device 10. FIG. 4A is a top view of the blower device 10, and FIG. 4B is a front view of the blower device 10. FIG. 4C is a bottom view of the blower device 10, and FIG. 4D is a side view of the blower device 10.

The blower device 10 includes a pair of ducts 20, a first blower 30, and a second blower 40. The blower 10 may be provided with at least one blower, and may be provided with only the first blower 30 among the first blower 30 and the second blower 40. First, a pair of ducts 20 will be described.

Each of the pair of ducts 20 has a long shape with the Y-axis direction as the longitudinal direction. The pair of ducts 20 are arranged side by side in the X-axis direction intersecting the Y-axis direction. That is, the pair of ducts 20 are arranged in parallel. A gap (the above-mentioned space 81) is provided between the pair of ducts 20.

More specifically, the duct 20 has a hollow rectangular parallelepiped shape. The upper surface of the duct 20 and the two side surfaces are closed. That is, no opening is provided on the upper surface of the duct 20 and the two side surfaces. Each of the pair of ducts 20 is made of, for example, a resin material, but may be made of a lightweight metal material such as aluminum.

Of the pair of ducts 20, the duct 20 located on the front side (X-axis plus side) is not provided with an opening on the front surface, but is provided with a vent 21 and a vent 22 on the back surface (the vent port 21 and the vent 22 are provided on the back surface). See (b) in FIG. 4). Of the pair of ducts 20, the duct 20 located on the back side (X-axis minus side) is not provided with an opening on the back surface, but is provided with a vent 21 and a vent 22 on the front surface.

The vent 21 is connected to the inside of the housing 31 of the first blower 30, and the first blower 30 blows air into each of the pair of ducts 20 through the vent 21. Further, the vent 22 is connected to the inside of the housing 41 of the second blower 40, and the second blower 40 blows air into each of the pair of ducts 20 through the vent 22. The air flow due to the blown air of the first blower 30 and the second blower 40 is shown by a broken line arrow in FIG. 4 (a).

An outlet 23 is provided on the lower surface of each of the pair of ducts 20. The outlet 23 is shown by diagonal hatching in FIG. 4 (c). The outlet 23 has a long shape along the longitudinal direction (Y-axis direction) of the duct 20. When each of the first blower 30 and the second blower 40 blows air into the pair of ducts 20, an air flow downward (Z-axis minus direction) is blown out from the outlet 23. As shown in the enlarged view of FIG. 2, in the cross section of the outlet 23, the width (length in the X-axis direction) of the outlet 23 becomes narrower toward the lower side. For example, the width of the outlet 23 becomes exponentially narrower toward the bottom.

Next, the first blower 30 will be described. The first blower 30 is located between the pair of ducts 20 at one end (the end on the plus side of the Y axis) of the pair of ducts 20 in the longitudinal direction, and blows air into each of the pair of ducts 20. .. The first blower 30 has a housing 31 and a fan 32.

The housing 31 has a hollow rectangular parallelepiped shape, and at least the end on the plus side of the Y-axis is open (see (d) in FIG. 4). Further, the front surface of the housing 31 is in contact with the back surface of the duct 20 on the front side of the pair of ducts 20, and a ventilation port 31a communicating with the ventilation port 21 of the duct 20 on the front side is provided on the front surface of the housing 31. Be done. The back surface of the housing 31 is in contact with the front surface of the duct 20 on the back side of the pair of ducts 20, and the back surface of the housing 31 is provided with a ventilation port 31a communicating with the ventilation port 21 of the duct 20 on the back side. The housing 31 is made of, for example, a resin material, but may be made of a lightweight metal material such as aluminum.

The fan 32 is housed inside the housing 31, takes in air from the Y-axis plus side end of the housing 31, and blows air to each of the two air outlets 31a. The first blower 30 has a drive circuit (not shown) including a motor and the like in the housing 31, and the drive circuit rotates a fan 32 around an axis along the longitudinal direction of a pair of ducts 20. The arrangement of the fans 32 (direction of the rotating shaft, etc.) is an example. The fan 32 may be arranged in any way as long as air can be sent into each of the pair of ducts 20.

Next, the second blower 40 will be described. The second blower 40 is located between the pair of ducts 20 at the other end (the end on the minus side of the Y axis) of the pair of ducts 20 in the longitudinal direction, and blows air into each of the pair of ducts 20. .. The second blower 40 has a housing 41 and a fan 42.

The housing 41 has a hollow rectangular parallelepiped shape, and at least the end on the minus side of the Y-axis is open (not shown). Further, the front surface of the housing 41 is in contact with the back surface of the duct 20 on the front side of the pair of ducts 20, and a ventilation port 41a communicating with the ventilation port 22 of the duct 20 on the front side is provided on the front surface of the housing 41. Be done. The back surface of the housing 41 is in contact with the front surface of the duct 20 on the back side of the pair of ducts 20, and the back surface of the housing 41 communicates with the ventilation port 22 of the duct 20 on the back side of the pair of ducts 20. A mouth 41a is provided. The housing 41 is made of, for example, a resin material, but may be made of a lightweight metal material such as aluminum.

The fan 42 is housed inside the housing 41, takes in air from the end on the minus side of the Y axis of the housing 41, and blows air to each of the two air outlets 41a. The second blower 40 has a drive circuit (not shown) including a motor or the like in the housing 41, and the drive circuit rotates a fan 42 around an axis along the longitudinal direction of a pair of ducts 20. The arrangement of the fan 42 (direction of the rotating shaft, etc.) is an example. The fan 42 may be arranged in any way as long as it can send air into each of the pair of ducts 20.

In the blower device 10 described above, the first blower 30 and the second blower 40 are arranged between the pair of ducts 20. As a result, the first blower 30 and the second blower 40 also function as members for keeping the distance between the pair of ducts 20 constant. In the blower device 10, a space 81 is formed between the pair of ducts 20 by the first blower 30 and the second blower 40, and between the first blower 30 and the second blower 40 in the longitudinal direction, and air is formed in the space 81. Is attracted, so it is possible to blow out an air flow with excellent straightness.

Further, if the first blower 30 and the second blower 40 are arranged between the pair of ducts 20, the noise radiated by the first blower 30 and the second blower 40 can be suppressed by the pair of ducts 20.

Further, a part of the first blower 30 (housing 31) is located above the upper surface of the pair of ducts 20. Similarly, a part of the second blower 40 (housing 41) is located above the upper surface of the pair of ducts 20.

As described above, in the blower device 10, the air curtain can be efficiently formed by attracting air from the space 82 above the pair of ducts 20. If a part of the first blower 30 and the second blower 40 protrudes above the pair of ducts 20, a space 82 is secured above the pair of ducts 20 when the blower 10 is attached to the ceiling 83. be able to. The blower device 10 may be attached to the ceiling 83 by connecting the upper surfaces of the first blower 30 and the second blower 40 to the ceiling 83, or may be suspended from the ceiling 83 by a wire or the like. .. The wire in this case is connected to at least one of the upper surfaces of the first blower 30 and the second blower 40 and the upper surfaces of the pair of ducts 20.

Further, the blower device 10 is provided with a first blower 30 at one end in the longitudinal direction and a second blower 40 at the other end in the longitudinal direction. According to such a configuration, it is possible to make the intensity distribution (wind speed distribution) in the longitudinal direction of the airflow (wind) blown out from the pair of ducts 20 uniform. If the strength distribution in the longitudinal direction is made uniform, the blower 10 can uniformly attract air from the space 82 above in the longitudinal direction, and the air curtain can be formed uniformly in the longitudinal direction.

In order to make the intensity distribution of the airflow blown out from the pair of ducts 20 uniform in the longitudinal direction, the central portion C in the longitudinal direction of the pair of ducts 20 (indicated by a broken line in FIGS. 4A and 4B). The (shown) may be provided with a partition plate (partition member), if necessary. Further, in order to make the strength distribution of the airflow blown from the pair of ducts 20 uniform in the longitudinal direction, the strength of the blown air of the first blower 30 and the strength of the blown air of the second blower 40 are set to be the same, for example. Will be done.

[Functional configuration]
Next, the functional configuration of the blower device 10 will be described. FIG. 5 is a block diagram showing a functional configuration of the blower device 10. In FIG. 5, in addition to the blower device 10, an information terminal 61, a distance measuring sensor 62, a motion sensor 63, a camera 64, and a microphone 65 are also shown. The distance measuring sensor 62, the motion sensor 63, the camera 64, and the microphone 65 are provided in the blower device 10, and may be built in the blower device 10.

The blower device 10 includes a first blower 30, a second blower 40, a control unit 51, and a storage unit 52. The control unit 51 and the storage unit 52 are built in, for example, the blower device 10.

The control unit 51 controls the blowing strength of the first blower 30 (for example, the rotation speeds of the fan 32 and the fan 42) and the blowing strength of the second blower 40. The strength of the blast can be rephrased as the air volume or the wind speed. The control unit 51 controls, for example, to match (match the same strength) the strength of the blown air of the first blower 30 and the strength of the blown air of the second blower 40. As a result, the blower device 10 can make the intensity distribution of the airflow blown out from the pair of ducts 20 uniform in the longitudinal direction.

Further, the control unit 51 can perform wired communication or wireless communication with each of the information terminal 61, the distance measuring sensor 62, the motion sensor 63, the camera 64, the microphone 65, and the like. The control unit 51 determines the strength of the blower of the first blower 30 and the strength of the blower of the second blower 40 based on the information obtained by communication from the information terminal 61, the distance measuring sensor 62, the motion sensor 63, the camera 64, and the microphone. Control the strength of the blast.

The control unit 51 is realized by, for example, a microcomputer, but may be realized by a processor. The function of the control unit 51 is realized, for example, by executing a computer program stored in the storage unit 52 by a microcomputer or the like constituting the control unit 51.

The storage unit 52 stores various information necessary for the control unit 51 to control the blowing strength of the first blower 30 and the blowing strength of the second blower 40, a computer program, and the like. It is a device. The storage unit 52 is realized by, for example, a semiconductor memory. The storage unit 52 may be built in the control unit 51.

The information terminal 61 is an information terminal in which a user inputs information in order to control the blower device 10. The information terminal 61 is, for example, a general-purpose device such as a personal computer, a smartphone, or a tablet terminal, but may be a dedicated device (for example, a dedicated remote controller) of the blower device 10.

The distance measuring sensor 62 measures the distance from the blower device 10 to the target surface, and outputs distance information indicating the measured distance. The target surface is a surface substantially facing the lower surface of the blower device 10 (the surface on which the outlet 23 is provided), and is, for example, the upper surface of the desk 90. The range-finding sensor 62 is, for example, a TOF (Time Of Light) type laser range-finding sensor that emits infrared laser light and detects the reflected infrared laser light, but may be another range-finding sensor.

The motion sensor 63 senses the presence or absence of a person staying in the space 80 in which the blower device 10 is installed, and outputs information indicating the presence or absence of a person in the space 80. The motion sensor 63 is, for example, a pyroelectric sensor that senses infrared rays emitted from a human body.

The camera 64 captures an image (moving image and still image) in the space 80 in which the blower device 10 is installed, and outputs image information of the captured image. The camera 64 is, in other words, an image sensor. The camera 64 is, for example, a surveillance camera.

The microphone 65 acquires the sound in the space 80 in which the blower 10 is installed, and outputs the sound information of the acquired sound. The microphone 65 is, in other words, a sound sensor.

[Operation example 1]
The blower device 10 controls the blower strength of the first blower 30 and the blower strength of the second blower 40 based on the distance from the blower device 10 to the target surface (for example, the upper surface of the desk 90). be able to. Hereinafter, operation example 1 of such a blower device 10 will be described. FIG. 6 is a flowchart of an operation example 1 of the blower device 10.

The user inputs the distance from the blower 10 to the target surface in the information terminal 61. The user may input the distance numerically, or may input the distance option presented by the information terminal 61. It should be noted that such an input is performed by, for example, a builder (a worker belonging to the construction company) when the blower device 10 is installed on the ceiling 83 of the space 80. That is, the user is, for example, a builder. The information terminal 61 outputs distance information indicating the input distance to the blower device 10. The user may be a general user.

The control unit 51 of the blower device 10 acquires the output distance information (S11), and based on the distance indicated by the acquired distance information, the strength of the blower of the first blower 30 and the blower of the second blower 40. The strength of is controlled (S12). Specifically, the control unit 51 strengthens the blowing of the first blower 30 and the blowing of the second blower 40 as the distance indicated by the distance information becomes longer. As a result, the blower device 10 can bring the air curtain formed by the blower device 10 to the upper surface of the desk 90.

The distance information acquired in step S11 may be distance information indicating the measured value measured by the distance measuring sensor 62. That is, the control unit 51 may acquire the distance information from the distance measuring sensor 62.

Further, when the distance information acquired in step S11 indicates the measured value measured by the distance measuring sensor 62, the distance threshold value may be input to the information terminal 61. When the control unit 51 determines that the distance indicated by the distance information measured by the ranging sensor 62 is larger than the threshold value of the distance input to the information terminal 61, the control unit 51 determines that the distance indicated by the distance information measured by the ranging sensor 62 is greater than the threshold. The blow of the first blower 30 and the second blower is strengthened more than when it is determined that is equal to or less than the threshold value of the distance input to the information terminal 61.

[Operation example 2]
The blower device 10 may control the blower strength of the first blower 30 and the blower strength of the second blower 40 based on the presence or absence of a person in the space 80 below the blower device 10. Hereinafter, operation example 2 of such a blower device 10 will be described. FIG. 7 is a flowchart of the operation example 2 of the blower device 10.

The motion sensor 63 senses infrared rays emitted from the human body, and outputs information indicating the presence or absence of a person in the space 80 to the blower 10 based on the sensing result.

The control unit 51 of the blower device 10 acquires the output information indicating the presence or absence of a person (S21), and based on the presence or absence of the person indicated by the acquired information, the strength of the blower of the first blower 30 and the first (2) The strength of the blower of the blower 40 is controlled (S22). Specifically, the control unit 51 strengthens the ventilation of the first blower 30 and the ventilation of the second blower 40 when there are people in the space 80, as compared with the case where there are no people in the space 80. As described above, the blower device 10 can operate efficiently by strengthening the blower when there is a person in the space 80 and there is a high need to block the droplets. The control unit 51 may stop the ventilation of the first blower 30 and the ventilation of the second blower 40 when there is no person in the space 80.

Further, the control unit 51 acquires image information of the image in the space 80 output by the camera 64 in step S21, and after step S21, processes the acquired image information to determine the presence or absence of a person. May be good. In this case, various existing processes for detecting a person from an image are used. In this way, the control unit 51 may use the camera 64 instead of the motion sensor 63 to determine the presence or absence of a person.

[Operation example 3]
The blower device 10 may control the blower strength of the first blower 30 and the blower strength of the second blower 40 based on the staying time of a person in the space 80 below the blower 10. Hereinafter, operation example 3 of such a blower device 10 will be described. FIG. 8 is a flowchart of an operation example 3 of the blower device 10.

The control unit 51 of the blower device 10 acquires the output information indicating the presence or absence of the person (S31), and calculates the staying time of the person in the space 80 based on the acquired information (S32). The control unit 51 can calculate, for example, the staying time of a person by accumulating the time that the acquired information indicates that the person exists. The dwell time is reset when the acquired information indicates that no one is present.

Next, the control unit 51 controls the blowing strength of the first blower 30 and the blowing strength of the second blower 40 based on the calculated staying time (S33). Specifically, the control unit 51 strengthens the ventilation of the first blower 30 and the ventilation of the second blower 40 as the staying time of the person in the space 80 is longer.

If a person stays in space 80 for a long time, it is estimated that there are many droplets contained in the air. As described above, the blower device 10 can operate efficiently by strengthening the blower when a person stays in the space 80 for a long time and there is a high need to block droplets. The control unit 51 may stop the ventilation of the first blower 30 and the ventilation of the second blower 40 when there is no person in the space 80.

Further, the control unit 51 may calculate the staying time of a person by acquiring the image information of the image in the space 80 output by the camera 64 in step S31 and processing the image information in step S32. In this case, various existing processes for detecting a person from an image are used. As described above, the control unit 51 may calculate the staying time of a person by using the camera 64 instead of the motion sensor 63.

[Operation example 4]
The blower device 10 controls the blower strength of the first blower 30 and the blower strength of the second blower 40 based on whether or not a person's mask is worn in the space 80 below the blower device 10. May be good. Hereinafter, operation example 4 of such a blower device 10 will be described. FIG. 9 is a flowchart of an operation example 4 of the blower device 10.

The camera 64 captures an image in the space 80 and outputs the image information of the captured image to the blower 10.

The control unit 51 of the blower device 10 acquires the output image information (S41) and processes the acquired image information to determine whether or not a person existing in the space 80 is wearing a mask (S42). Specifically, the control unit 51 detects a person reflected in the image by processing the acquired image information, and based on whether or not the nose and mouth are reflected in the face portion of the detected person. It is possible to determine whether or not a mask is worn. In addition, other existing processes (algorithms) may be used to determine whether or not the mask is worn.

Next, the control unit 51 controls the blowing strength of the first blower 30 and the blowing strength of the second blower 40 based on the determination result of whether or not the mask is worn (S43). Specifically, when the person present in the space 80 is not wearing the mask, the control unit 51 blows the first blower 30 and the second blower more than when the person is wearing the mask. Strengthen the blast of 40. As described above, the blower device 10 can operate efficiently by strengthening the blower when the person existing in the space 80 does not wear the mask and there is a high need to block the droplets.

When there are a plurality of people in the space 80, the control unit 51 may use the first blower 30 as compared with the case where all of them are wearing masks if there is even one person who is not wearing a mask. And the blow of the second blower 40 are strengthened. When there are a plurality of people in the space 80, the control unit 51 strengthens the blower of the first blower 30 and the blower of the second blower 40 as the number of people who do not wear the mask increases. May be good.

[Operation example 5]
The blower device 10 controls the blower strength of the first blower 30 and the blower strength of the second blower 40 based on the amount of speech (speaking time) of a person in the space 80 below the blower 10. You may. Hereinafter, an operation example 5 of such a blower device 10 will be described. FIG. 10 is a flowchart of an operation example 5 of the blower device 10.

The microphone 65 acquires the sound in the space 80 and outputs the sound information of the acquired sound to the blower 10.

The control unit 51 of the blower device 10 acquires the output sound information (S51), and calculates the amount of human speech in the space 80 based on the acquired sound information (S52). For example, the control unit 51 considers the length of the period in which the volume (sound pressure level) becomes a predetermined value or more in a unit period (for example, about several minutes to 10 minutes) as the utterance amount (utterance time). As a method for specifying the period during which a person is speaking, another existing method such as a method for performing waveform analysis may be used.

Next, the control unit 51 controls the blowing strength of the first blower 30 and the blowing strength of the second blower 40 based on the calculated utterance amount (S53). Specifically, the control unit 51 controls the blowing strength of the first blower 30 and the blowing strength of the second blower 40 in the next unit period based on the amount of utterance in one unit period. The control unit 51 strengthens the blowing of the first blower 30 and the blowing of the second blower 40 in the next unit period as the amount of utterance in one unit period increases.

When the amount of speech of a person in the space 80 is large, it is estimated that there are many droplets contained in the air. As described above, the blower device 10 can operate efficiently by strengthening the blower when the amount of speech of a person in the space 80 is large and it is highly necessary to block the droplets. The control unit 51 stops the blowing of the first blower 30 and the blowing of the second blower 40 when no person is speaking in the space 80 (when the volume does not exceed a predetermined value in a unit period). You may let me.

[Operation example 6]
The blower device 10 may control the blower strength of the first blower 30 and the blower strength of the second blower 40 based on the utterance volume of a person in the space 80 below the blower 10. Hereinafter, operation example 6 of such a blower device 10 will be described. FIG. 11 is a flowchart of an operation example 6 of the blower device 10.

The control unit 51 of the blower device 10 acquires the output sound information (S61), and calculates the utterance volume of a person in the space 80 based on the acquired sound information (S62). The control unit 51 specifies, for example, a period in which the volume (sound pressure level) becomes a predetermined value or more in a unit period (for example, about several minutes to 10 minutes), and considers the average volume in the specified period as the utterance volume. As a method for specifying the period during which a person is speaking, another existing method such as a method for performing waveform analysis may be used.

Next, the control unit 51 controls the blowing strength of the first blower 30 and the blowing strength of the second blower 40 based on the calculated utterance volume (S63). Specifically, the control unit 51 controls the blowing strength of the first blower 30 and the blowing strength of the second blower 40 in the next unit period based on the utterance volume in one unit period. The control unit 51 strengthens the blowing of the first blower 30 and the blowing of the second blower 40 in the next unit period as the utterance volume in one unit period becomes louder.

When the volume of a person's utterance in the space 80 is high (that is, when the person is speaking in a loud voice), it is estimated that there are many droplets contained in the air. As described above, the blower device 10 can operate efficiently by strengthening the blower when the volume of speech by a person in the space 80 is high and there is a high need to block droplets. The control unit 51 stops the blowing of the first blower 30 and the blowing of the second blower 40 when no person is speaking in the space 80 (when the volume does not exceed a predetermined value in a unit period). You may let me.

[Structure example 1 of airflow control system]
The present invention may be realized as an airflow control system including a blower 10. FIG. 12 is a diagram showing configuration example 1 of the airflow control system according to the embodiment.

As shown in FIG. 12, the airflow control system 100 according to the embodiment includes a blower 10, a cabinet fan 70, and a desk 90. The desk 90 is an example of furniture.

The blower device 10 is an example of the first blower device. The blower 10 is installed above the furniture such as the desk 90, and blows the airflow toward the opening 91 provided in the desk 90, for example. That is, the desk 90 is provided with an opening 91 for passing the airflow blown from each of the outlets 23 of the pair of ducts 20.

The cabinet fan 70 is an example of the second blower. The cabinet fan 70 is installed in the internal space 86 of the wall 84 provided in the space 80. The cabinet fan 70 sucks the air blown to the floor 85 by the blower 10 from the opening 84a provided at the bottom of the wall 84 and toward the upper space 87 above the ceiling 83 (that is, upward). ) Send. The cabinet fan 70 has an air filter, a blower fan, and the like, and is a unit realized by accommodating these components in a housing.

Such an airflow control system 100 can discharge aerosols (sprays, etc.) contained in the air blown to the floor 85 by the blower device 10 to the outside of the space 80. Therefore, the airflow control system 100 can suppress the spread of infectious diseases in the space 80.

If the airflow blown out by the blower 10 hits the upper surface of the desk 90, the aerosol may be scattered near the upper surface of the desk 90. Therefore, the opening 91 is made to have a size sufficiently larger than the pair of outlets 23 so that the airflow does not hit the upper surface of the desk 90. FIG. 13 is a top view of the desk 90 on which the shapes of the pair of outlets 23 are projected.

As shown in FIG. 13, when the pair of outlets 23 are projected on the upper surface of the desk 90, the pair of outlets 23 are all located in the area where the opening 91 is provided. This projection is performed perpendicular to the upper surface of the desk 90 so that the shape of the outlet appears at the position of the upper surface of the desk 90 in actual size. The length of the opening 91 (length in the Y-axis direction) is longer than the length of the outlet 23, and the width of the opening 91 (length in the X-axis direction) is longer than the width of the outlet 23. This prevents the airflow blown out by the blower 10 from hitting the upper surface of the desk 90.

[Airflow control system configuration example 2]
The airflow control system including the blower device 10 is not limited to the configuration like the airflow control system 100. FIG. 14 is a diagram showing configuration example 2 of the airflow control system according to the embodiment.

As shown in FIG. 14, the airflow control system 100a includes a blower 10, a cabinet fan 70, and a desk 90.

In the airflow control system 100a, a suction port 92 is provided on the upper surface of the desk 90. Further, the airflow control system 100a includes an intake path 93 (duct) that connects the suction port 92 and the opening 84a provided in the lower part of the wall 84. As a result, the cabinet fan 70 can suck air from the suction port 92.

The blower device 10 is installed above furniture such as a desk 90, and blows an air flow toward a suction port 92 provided in the desk 90. That is, the airflow blown out from each of the outlets 23 of the pair of ducts 20 is taken into the suction port 92 without leakage. Therefore, in the airflow control system 100a, the amount of air sucked from the suction port 92 is set to be larger than the amount of air blown from the blower device 10.

The cabinet fan 70 is installed in the internal space 86 of the wall 84 provided in the space 80. The cabinet fan 70 sucks air from the suction port 92 through the intake path 93 through the opening 84a provided in the lower part of the wall 84, and sends the air toward the upper space 87 above the ceiling 83 (that is, upward). do. The cabinet fan 70 has an air filter, a blower fan, and the like, and is a unit realized by accommodating these components in a housing.

Such an airflow control system 100a can discharge aerosols (sprays, etc.) generated from a person by the blower device 10 to the outside of the space 80. Therefore, the airflow control system 100 can suppress the spread of infectious diseases in the space 80.

The opening area of the suction port 92 does not have to be larger than the projected area of the pair of outlets 23. By setting the amount of air sucked from the suction port 92 to be larger than the amount of air blown from the blower device 10, it is possible to suppress the leakage of aerosol from the upper surface of the desk 90.

[Structure example 3 of airflow control system]
FIG. 15 is a diagram showing a configuration example 3 of the airflow control system according to the embodiment. As shown in FIG. 15, the airflow control system 100b according to the embodiment includes a blower 10, a cabinet fan 70, and a desk 90.

In the airflow control system 100b, a suction port 92 is provided on the upper surface of the desk 90. Further, the airflow control system 100b is provided with an intake passage 93 (duct) for connecting the suction port 92 and the cabinet fan 70 arranged directly below the suction port 92. The suction port 92 is provided with a high-performance filter 94 capable of collecting fine particles. The high-performance filter 94 is, for example, a HEPA (High Efficiency Particulate Air) filter. The high-performance filter 94 has a function of collecting aerosols contained in the air sucked from the suction port 92 and purifying the air. By providing the high-performance filter 94 in the vicinity of the suction port 92, the user can easily replace the high-performance filter 94 and maintain the high-performance filter 94.

The blower device 10 is installed above furniture such as a desk 90, and blows an air flow toward a suction port 92 provided in the desk 90. That is, the airflow blown out from each of the outlets 23 of the pair of ducts 20 is taken into the suction port 92 without leakage. Therefore, in the airflow control system 100b, the amount of air sucked from the suction port 92 is set to be larger than the amount of air blown from the blower device 10.

The cabinet fan 70 is installed below the desk 90. The cabinet fan 70 sucks air from the suction port 92 through the intake path 93, passes through the high-performance filter 94, and sends the purified air into the space 80. The cabinet fan 70 has a blower fan and the like, and is a unit realized by accommodating these components in a housing.

Such an airflow control system 100b can purify the air in the space 80 by purifying the aerosol (sprays, etc.) generated from a person by the blower 10 and returning it to the space 80. Therefore, the airflow control system 100b can suppress the spread of the infectious disease in the space 80.

[Modification example]
In the above embodiment, the blower 10 is installed on the ceiling 83 and blows out an air flow downward. However, the blower device 10 may be installed on the wall 84 and blow out an air flow toward the side (for example, in the front-back and left-right directions). The blower device 10 may blow out an air flow in an arbitrary direction according to the installation state. Hereinafter, this arbitrary direction is described as the first direction. The direction opposite to the first direction is described as the second direction.

[Effects, etc.]
As described above, the blower device 10 is located between the pair of long ducts 20 arranged in parallel and the pair of ducts 20, and blows air into each of the pair of ducts 20 first. It is equipped with a blower 30. Each of the pair of ducts 20 is provided with an outlet 23 which is a long outlet 23 along the longitudinal direction of the duct 20 and in which an air flow toward the first direction is blown out by blowing air.

In such a blower device 10, a space 81 is formed between the pair of ducts 20 by the first blower 30, and air is attracted to the space 81, so that an airflow having excellent straightness can be blown out. Further, in such a blower device 10, the first blower 30 can also function as a member for keeping the distance between the pair of ducts 20 constant. Further, the noise radiated by the first blower 30 can be suppressed by the pair of ducts 20.

Further, for example, a part of the first blower 30 protrudes from the pair of ducts 20 in the second direction opposite to the first direction.

In such a blower device 10, it becomes easy to form a space (for example, a space 82) in the direction opposite to the outlet 23 of the pair of ducts 20. The blower device 10 can blow out an air flow having high straightness by attracting air from the formed space to the space 81.

Further, for example, the blower device 10 further includes a second blower 40 located between the pair of ducts 20 and blowing air into each of the pair of ducts 20. The first blower 30 is located between the pair of ducts 20 at one end of the pair of ducts 20, and the second blower 40 is located between the pair of ducts 20 at the other end of the pair of ducts 20. do.

Such a blower device 10 can make the strength distribution of the airflow blown out from the pair of ducts 20 uniform in the longitudinal direction.

Further, for example, each of the first blower 30 and the second blower 40 has a fan (fan 32 and fan 42) that rotates around an axis along the longitudinal direction.

In such a blower device 10, each of the first blower 30 and the second blower 40 blows air along the longitudinal direction of the pair of ducts 20, so that the strength distribution of the airflow blown out from the outlet 23 in the longitudinal direction. Can be made uniform.

Further, for example, the blower device 10 further includes a control unit 51 that controls to match the blower strength of the first blower 30 with the blower strength of the second blower 40.

Further, for example, a downward airflow is blown out from each outlet 23 of the pair of ducts 20.

Such a blower device 10 can blow out an air flow having excellent straightness toward the bottom.

Further, for example, the airflow toward the desk 90 is blown out from each of the outlets 23 of the pair of ducts 20, and the airflow blown out from each of the outlets 23 of the pair of ducts 20 is passed through the desk 90. An opening 91 is provided. The desk 90 is an example of furniture.

Such a blower 10 can form an air curtain (air flow wall) on the desk 90.

Further, for example, when the shape of each outlet 23 of the pair of ducts 20 is projected toward the desk 90, the shape of the outlet 23 is located in the area where the opening 91 is provided.

Such a blower device 10 can prevent the airflow blown by the blower device 10 from hitting the upper surface of the desk 90.

Further, for example, an air flow toward the target surface is blown out from each outlet 23 of the pair of ducts 20. The blower device 10 further includes a control unit 51 that controls the blower strength of the first blower 30 based on the distance from the blower device 10 to the target surface. The target surface is, for example, the upper surface of the desk 90, but may be the upper surface of the floor 85 or the like.

Such a blower device 10 can operate so that the airflow blown to the blower device 10 reaches the target surface.

Further, for example, the longer the distance, the stronger the air blown by the first blower 30.

Such a blower device 10 can bring the airflow blown from the blower device 10 to the target surface. That is, the blower device 10 can stably form an air curtain.

Further, for example, the blower device 10 further includes a control unit 51 that controls the blower strength of the first blower 30 based on the presence or absence of a person in the space 80 in which the blower device 10 is installed.

Such a blower device 10 operates efficiently by strengthening the blower when a person is present in the space 80 (that is, when it is highly necessary to block the droplets by the airflow blown from the blower device 10). Can be done.

Further, for example, the blower device 10 further includes a control unit 51 that controls the blower strength of the first blower 30 based on the staying time of a person in the space 80 in which the blower device 10 is installed.

Such a blower 10 can operate efficiently by strengthening the blow when a person stays for a long time (that is, when it is highly necessary to block the droplets by the airflow blown from the blower 10). can.

Further, for example, the blower device 10 further includes a control unit 51 that controls the blower strength of the first blower 30 based on whether or not a person wears a mask in the space 80 in which the blower device 10 is installed.

Such a blower 10 operates efficiently by strengthening the blow when a person is not wearing a mask (that is, when it is highly necessary to block the droplets by the airflow blown from the blower 10). be able to.

Further, for example, the blower device 10 further includes a control unit 51 that controls the blower strength of the first blower 30 based on the amount of speech spoken by a person in the space 80 in which the blower device 10 is installed.

Such a blower device 10 can operate efficiently by strengthening the blower when the amount of speech of a person is large (that is, when it is highly necessary to block the droplets by the airflow blown from the blower device 10). can.

Further, for example, the blower device 10 further includes a control unit 51 that controls the blower strength of the first blower 30 based on the utterance volume of a person in the space 80 in which the blower device 10 is installed.

Such a blower device 10 can operate efficiently by strengthening the blower when a person's utterance volume is high (that is, when it is highly necessary to block the droplets by the airflow blown from the blower device 10). can.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

For example, in the above embodiment, the blower device includes a pair of long ducts arranged in parallel, but may include three or more long ducts arranged in parallel. That is, the blower may be provided with at least two ducts.

Further, the order of processing described in the above embodiment is an example. The order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel. Further, another processing unit may execute the processing executed by the specific processing unit.

Further, in the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

Further, each component may be realized by hardware. For example, each component may be a circuit (or an integrated circuit). These circuits may form one circuit as a whole, or may be separate circuits from each other. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.

Further, the general or specific embodiment of the present invention may be realized by a recording medium such as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable CD-ROM. Further, it may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program and a recording medium. For example, the present invention may be realized as a building to which the airflow control system of the above embodiment is applied. Further, the present invention may be executed as a control method of a blower executed by a computer such as the control unit of the above embodiment, or may be realized as a program for causing a computer to execute such a control method. good. Further, the present invention may be realized as a computer-readable non-temporary recording medium in which such a program is recorded.

In addition, it is realized by a form obtained by applying various modifications to each embodiment that a person skilled in the art can think of, or by arbitrarily combining the components and functions in each embodiment within the range not deviating from the gist of the present invention. Also included in the present invention.

10 Blower 20 Duct 23 Blowout 30 First blower 40 Second blower 51 Control unit 80 Space 90 Desk (furniture)
91 Aperture C Central

Claims

A pair of long ducts arranged in parallel,
It is located between the pair of ducts and is equipped with a first blower that blows air into each of the pair of ducts.
A blower device in which each of the pair of ducts is provided with a long outlet along the longitudinal direction of the duct, and an outlet for blowing out airflow toward the first direction by the blower.
The blower according to claim 1, wherein a part of the first blower protrudes from the pair of ducts in a second direction opposite to the first direction.
Further, a second blower located between the pair of ducts and blowing air into each of the pair of ducts is provided.
The first blower is located between the pair of ducts at one end of the pair of ducts.
The blower according to claim 1 or 2, wherein the second blower is located between the pair of ducts at the other end of the pair of ducts.
The blower according to claim 3, wherein each of the first blower and the second blower has a fan that rotates around an axis along the longitudinal direction.
The blower according to claim 3 or 4, further comprising a control unit that controls to match the strength of the blow of the first blower with the strength of the blow of the second blower.
The blower according to any one of claims 1 to 5, wherein a downward airflow is blown out from each of the outlets of the pair of ducts.
An air flow toward the fixture is blown out from each of the outlets of the pair of ducts.
The blower according to any one of claims 1 to 6, wherein the fixture is provided with an opening for passing an air flow blown from each of the outlets of the pair of ducts.
The blower according to claim 7, wherein when the shape of the outlet of each of the pair of ducts is projected toward the fixture, the shape is located in the area where the opening is provided.
An air flow toward the target surface is blown out from each of the outlets of the pair of ducts.
The one according to any one of claims 1 to 8, wherein the blower further includes a control unit that controls the strength of the blower of the first blower based on the distance from the blower to the target surface. Blower.
The blower according to claim 9, wherein the control unit strengthens the blower of the first blower as the distance becomes longer.
The blower according to any one of claims 1 to 8, further comprising a control unit for controlling the strength of the blower of the first blower based on the presence or absence of a person in the space where the blower is installed. ..
The blower according to any one of claims 1 to 8, further comprising a control unit for controlling the blower strength of the first blower based on the staying time of a person in the space where the blower is installed. Device.
Further, the item according to any one of claims 1 to 8, further comprising a control unit for controlling the strength of the blown air of the first blower based on whether or not a person wears a mask in the space where the blower is installed. Blower.
The blower according to any one of claims 1 to 8, further comprising a control unit for controlling the blower strength of the first blower based on the amount of speech spoken by a person in the space where the blower is installed. Device.
The blower according to any one of claims 1 to 8, further comprising a control unit for controlling the blower strength of the first blower based on the utterance volume of a person in the space where the blower is installed. Device.