WO2021084647A1

WO2021084647A1 - Air-conditioning system and control device

Info

Publication number: WO2021084647A1
Application number: PCT/JP2019/042550
Authority: WO
Inventors: 浩之安田; 智祐成井; 修一村山; 裕希川野; 仁川▲崎▼; 夏美田村
Original assignee: 三菱電機ビルテクノサービス株式会社; 三菱電機株式会社
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-05-06
Also published as: JPWO2021084647A1

Abstract

An air-conditioning system (60) includes an air conditioner (70) and a control unit (90). The air conditioner (70) has an air outlet (22) or the like directed toward a room (10) and blows air through the air outlet (22) or the like to perform air conditioning. After the air conditioner (70) starts air conditioning (S10), the control unit (90) acquires the measured wind speed information and position information from a wind speed sensor device (140) equipped with an air speed sensor (142) disposed in the room (10) (S16). The control unit (90) estimates the wind speed distribution over a wide area by performing parameter fitting to match a wind speed distribution template prepared in advance to the acquired wind speed information and position information (S22).

Description

Air conditioning system and control device

The present invention relates to an air conditioning system and a control device.

Wind speed, along with temperature and humidity, affects the comfort that air conditioning gives to occupants (hereinafter referred to as "comfort"). If the wind speed around the occupants in the room to be air-conditioned can be grasped, it is possible to control the air-conditioning to improve the comfort of each person.

Patent Document 1 below describes that when the relationship between the distance from the air conditioner and the wind speed is memorized and the position of the person is estimated, the wind speed around the person is estimated based on the memorized relationship. ing. Further, Patent Document 1 below describes that an anemometer is attached to a remote controller or a smartphone capable of operating an air conditioner, and the wind speed measured by the anemometer is estimated as the wind speed around a person.

Patent Document 2 below describes controlling a plurality of air conditioners so as to satisfy the environment settings of each person present in the space to be air-conditioned. Specifically, the air conditioner is installed based on the performance information of the air conditioner such as the wind speed and the wind direction uniquely determined by the prior experiment, the floor plan information of the target space, the arrangement information of the air conditioner, and the occupant information. I'm in control.

JP-A-2017-3195 Japanese Unexamined Patent Publication No. 2016-156511

In Patent Document 1 above, the wind speed is estimated based on the relationship between the distance from the air conditioner and the wind speed. However, it is not clear what the wind speed will be when the air conditioner has a plurality of air outlets, or when the air conditioner is located at a position other than the front of the air outlets. Also, it is not realistic to have everyone have an anemometer. Therefore, in order to grasp the wind speed distribution in the room in detail, it is conceivable to install a large number of wind speed sensors or perform a detailed fluid simulation, but a lot of labor and cost are required.

In Patent Document 2 above, control is performed using a wind speed and a wind direction uniquely determined by conducting an experiment in advance. For this reason, there is a concern that there may be a discrepancy with the state in which air conditioning is actually performed.

An object of the present invention is to obtain the wind speed distribution by air conditioning by a simple method and to enable the use for air conditioning control.

The air-conditioning system according to the present invention is a terminal device having an air-conditioning port directed toward a room, blowing air from the air-blowing port to air-condition the room, and a wind speed sensor arranged in the room. From, the wind speed position acquisition means for acquiring the wind speed information measured in the vicinity of the terminal device and the position information of the terminal device, and the wind speed distribution template prepared in advance, the acquired wind speed information and the position information. It is characterized by comprising an estimation means for estimating a wide range of wind speed distribution in the room in accordance with the above.

In one aspect of the present invention, the air conditioner includes two or more of the air outlets, and the estimation means applies the same template to the air blower range of each of the air outlets, performs the same parameter fitting, and performs the same parameter fitting. It is characterized by estimating the wind speed distribution.

In one aspect of the present invention, the template is formed symmetrically with respect to the center line in the blowing direction.

In one aspect of the present invention, the wind speed position acquisition means acquires the wind speed information measured by a plurality of the wind speed sensors arranged on substantially the same horizontal plane, and the estimation means is substantially the same as the wind speed sensor. It is characterized in that the wind speed distribution is estimated for the horizontal plane of.

In one aspect of the present invention, the wind speed at each position of the plurality of people satisfies the blowing condition based on the person position acquisition means for acquiring the information on the positions of the plurality of people in the room and the estimated wind speed distribution. As described above, the air conditioner is provided with a control means for controlling the blowing air.

In one aspect of the present invention, the air conditioner has a changing means for changing at least one of the air volume, the wind direction, and the temperature in response to a user's instruction, and when the change is made by the changing means, the above-mentioned It is characterized in that it is provided with a correction means for correcting the wind speed distribution.

One aspect of the present invention is characterized in that a correction means for correcting the wind speed distribution is provided when the layout related to air conditioning in the room is changed.

In one aspect of the present invention, the measured value estimated value comparing means for comparing the measured value of the wind speed newly measured by the wind speed sensor with the estimated value based on the estimated wind speed distribution, and the measured value estimated value comparing means. As a result of the comparison according to the above, when the accuracy of the estimated value is worse than the predetermined value, the wind speed distribution is corrected by the correction means.

In one aspect of the present invention, the measured value estimated value comparing means for comparing the measured value of the wind speed newly measured by the wind speed sensor with the estimated value based on the estimated wind speed distribution, and the measured value estimated value comparing means. As a result of the comparison according to the above, when the accuracy of the estimated value is worse than a predetermined value, an output means for calling attention is provided.

In one aspect of the present invention, the room is divided into a plurality of areas based on the layout information related to air conditioning in the room, and the estimation means distributes the wind speed by a method different for each divided area. Is characterized by estimating.

The control device according to the present invention is a control device that has an air blower directed toward a room and controls an air conditioner that blows air from the air blower to perform air conditioning in the room, and is arranged in the room. The wind speed position acquisition means for acquiring the wind speed information measured in the vicinity of the terminal device and the position information of the terminal device from the terminal device provided with the wind speed sensor, and the wind speed distribution template prepared in advance. It is characterized by comprising an estimation means for estimating a wide range of wind speed distribution in the room by adapting to the information of the above and the information of the position.

According to the present invention, since the template is used, it is easy to estimate the wind speed distribution in the room to be air-conditioned.

It is the schematic of the room where the air-conditioning system which concerns on embodiment air-conditions. It is a block diagram which shows the functional structure of an air conditioning system. It is a flowchart which shows the flow of processing in an air conditioning system. It is a figure which shows the setting example of a coordinate area and a coordinate. It is a figure which shows the setting example of the coordinate area in the whole room. It is a figure which shows the example of the template of the velocity distribution. It is a figure which shows the example of another template of the velocity distribution. It is a figure which shows the example of the arrangement of the wind speed sensor. It is a figure which shows the example of finding the position of an estimated value. It is a figure which shows the example which performs the area division according to the layout. It is a figure which shows the example which layout is changed.

The embodiment will be described below with reference to the drawings. In the description, specific embodiments are shown for ease of understanding, but these are examples of embodiments, and various other embodiments can be taken.

First, the situation in which the air conditioning system according to the embodiment is introduced will be described with reference to FIG. As an air-conditioning target, an indoor 10 which is an office in a building is illustrated. FIG. 1 is a view showing the room 10 from above. The room 10 is a rectangular space surrounded by wall surfaces 12 on all sides. Doors and windows are provided on the wall surface 12, but the illustration is omitted in FIG.

Two

indoor units

20 and 30, which are devices installed in the building among the air conditioners constituting the air conditioning system, are attached to the ceiling of the room 10. The indoor unit 20 has four

air outlets

22, 24, 26, and 28 directed toward the room 10, and the indoor unit 30 has four

air outlets

32, 34, 36, and 38 directed toward the room 10. There is. The

indoor units

20 and 30 are devices that perform cooling operation and heating operation of the indoor 10 by circulating a refrigerant and exchanging heat with an outdoor unit (not shown). The cooled or heated air is blown into the room 10 from the air outlet 22 or the like with a set air volume and direction.

In the room 10, three

square desks

40, 44, 48 are installed, and one

chair

42, 46, 50 is provided for each. Each pair of

desks

40, 44, 48 and

chairs

42, 46, 50 is assigned to a resident (typically an employee) in room 10. The occupants spend most of their time in the office sitting in the

chairs

42, 46, and 50.

In the room 10, one round desk 52 for meetings is installed, and three

chairs

54, 56, 58 are provided around it. The occupants gather around the round desk 52 and select

appropriate chairs

54, 56, and 58 to sit down when having a meeting or the like.

If the occupants are sitting on

chairs

42, 46, 50, 54, 56, 58, or if they continue to stand at a specific point without moving, the air outlets 22 of the

indoor units

20 and 30 Therefore, it will be continuously blown. The wind speed of the air sent from the air outlet 22 and the like, together with the temperature and humidity, is a factor that determines the comfort of air conditioning in the indoor 10 spaces. Therefore, in the air-conditioning system according to the embodiment, the maximum wind speed is prevented so that each occupant does not receive a very strong wind speed while sitting on the

chairs

42, 46, 50, 54, 56, 58. The ventilation is controlled under the limited ventilation conditions. In addition, if necessary, the blowing control is performed under the blowing conditions with a limited minimum wind speed so as to receive the blowing at a certain wind speed. This aims to improve the overall air-conditioning comfort of the room 10.

FIG. 2 is a block diagram showing an outline of the functional configuration of the air conditioning system 60. The air conditioning system 60 includes an air conditioner 70, a wind speed sensor device 140, a PC 150, a smartphone 160, and a mobile partition 170.

The air conditioner 70 is a device that air-conditions the room 10. The air conditioner 70 includes an outdoor unit and computer hardware as hardware in addition to the

indoor units

20 and 30 shown in FIG. In the air conditioner 70, these hardwares are used to form a heating / cooling mechanism 72, a blowing mechanism 74, a setting changing unit 80, and a control unit 90.

The heating / cooling mechanism 72 is a mechanism for heating or cooling air by exchanging heat between the

indoor units

20 and 30 and the outdoor unit via a refrigerant. The heating and cooling settings are basically performed by instructions from the central monitoring room of the building, but adjustment instructions from the user can also be received through the setting changing unit 80.

The blower mechanism 74 is a mechanism for blowing air from the blower ports 22 and the like of the

indoor units

20 and 30. The air blowing mechanism 74 is provided with an air volume adjusting unit 76 and an air direction adjusting unit 78. The air volume adjusting unit 76 adjusts the amount of air sent out from the air outlet 22 or the like per unit time. The air volume is adjusted by adjusting the wind speed of the air to be sent out. The wind direction adjusting unit 78 changes the angle of the air outlet 22. In the wind direction adjustment, for example, a change for strengthening the degree of downward movement, a change for increasing the degree of upward movement, a change for swinging between upward and downward directions, and the like are performed. Wind direction adjustment may change the wind direction within the horizontal direction. The ventilation setting is basically performed by the instruction from the central monitoring room of the building, but the adjustment instruction from the user can also be received through the setting change unit 80. Further, the air conditioner 70 has a function of setting the ventilation by controlling the control unit 90, as will be described later.

The setting changing unit 80 is an example of the changing means, and receives an operation from the user to change the operation of the air conditioner 70. The setting changing unit 80 can adjust, for example, the temperature, the wind direction, the air volume, and the like.

The control unit 90 is a control device that controls the air conditioner 70. The control unit 90 controls computer hardware such as a processor that performs arithmetic processing, a memory that stores data, and a transmission / reception circuit for transmitting / receiving to / from an external device by software such as an OS (Operating System) and an application program (application). It works by doing. Although the control unit 90 is assumed to be built in the air conditioner 70 in the embodiment, it can be constructed by using, for example, an external computer set to enable communication. In the control unit 90, a wind speed distribution estimation unit 100, a blower control unit 120, and a correction determination unit 130 are constructed by an application.

The wind speed distribution estimation unit 100 estimates the wind speed distribution for a wide area in the room 10. The wide range means a range wider than the local range in which the wind speed sensor device 140 measures the wind speed, and does not necessarily mean the entire area of the room 10. The wind speed distribution is expressed in a mathematical formula format, a map format, a tabular format, or the like as a function of the position in the room 10, for example. The wind speed distribution estimation unit 100 is provided with a wind speed position acquisition unit 102, a layout acquisition unit 104, an area division unit 106, a parameter fitting unit 108, and a correction processing unit 110.

The wind speed position acquisition unit 102 is an example of the wind speed position acquisition means, and acquires wind speed information and position information from the wind speed sensor device 140.

The layout acquisition unit 104 acquires air conditioning-related layout information from the PC 150. The air-conditioning-related layout information refers to information on the shape related to the air flow in the room 10 and the arrangement of articles and the like (this is called a layout). The layout information includes information on the arrangement of the wall surface 12, doors, windows, etc., which is the boundary of the room 10, and information on the arrangement of large equipment such as a library and a partition. Further, the layout information includes information on the

indoor units

20 and 30, that is, information on the positions of the

indoor units

20 and 30 in the room 10 and the position and direction of the air outlet 22 and the like. Further, the layout information includes layout information regarding seats of people such as

desks

40, 44, 48, 52 and chairs 42, 46, 50, 54, 56, 58 provided in the room 10.

The area division unit 106 is an example of the division means, and divides the area for obtaining the wind speed distribution in the room 10 into a plurality of areas based on the layout information regarding the shape of the room 10. That is, the wind speed distribution is estimated by a different method for each area.

The parameter fitting unit 108 is an example of the estimation means, and performs parameter fitting on a model of the wind speed distribution expressed using the parameters (this is called a template) to obtain a wind speed distribution suitable for the room 10. As a result, the wind speed distribution in the room 10 is estimated. Templates include, for example, polynomials in space coordinates (for example, first-order polynomials, second-order polynomials, third-order polynomials, etc.), Fourier series in space coordinates, and exponential functions in space coordinates. There are things that are done. A template using a polynomial will be illustrated later. The Fourier series is, for example, a feature that makes it easy to express a rotationally symmetric wind speed distribution in polar coordinates, or expresses wind speeds from a plurality of

indoor units

20 and 30 arranged in a grid pattern in orthogonal linear coordinates. It has the feature that it is easy to do. The exponential function has a feature that it is easy to express the attenuation of the wind speed at a position away from the air outlet 22 and the like. The template is not limited to the one expressed by an expression, and may be expressed in a map format or a tabular format having values at a large number of grid points in space. The template has parameters whose values are undecided, and it is possible to adapt the template to the actual wind speed by performing parameter fitting based on the wind speed information and position information acquired by the wind speed position acquisition unit 102. Become. Parameter fitting is performed, for example, by the method of least squares.

The correction processing unit 110 is an example of the correction means, and once corrects the estimated wind speed distribution. The correction is performed when the correction determination unit 130 determines that the correction is necessary. The correction may be to re-perform the parameter fitting by the parameter fitting unit 108, or to change a part of the result of the parameter fitting already performed (for example, only the constant term).

The blower control unit 120 is an example of the control means, determines the blower mode in the air conditioner 70, and gives an instruction to the blower mechanism 74. The blast control unit 120 is provided with a person position acquisition unit 122, an estimated value calculation unit 124, and a blast condition determination unit 126.

The person position acquisition unit 122 is an example of the person position acquisition means, and acquires information on the position of a resident in the room 10. For example, the person position acquisition unit 122 acquires seating information from the PC 150 and compares it with the layout information about the seats acquired by the layout acquisition unit 104 to obtain information on the positions of a plurality of occupants in the room 10. Obtainable. In addition, the person position acquisition unit 122 can obtain the position information of the occupant by acquiring the position information from the smartphone 160 possessed by the occupant in the room 10.

The estimated value calculation unit 124 obtains the estimated value of the wind speed at the position of the occupant in the room 10 acquired by the person position acquisition unit 122 based on the wind speed distribution estimated by the wind speed distribution estimation unit 100.

The ventilation condition determination unit 126 determines whether or not the estimated value of the wind speed at the position of the occupant obtained by the estimation value calculation unit 124 satisfies the ventilation condition. As the blowing condition, the maximum wind speed or the minimum wind speed can be set. Specifically, it is possible to give a condition that the wind speed is equal to or less than the preset maximum wind speed or equal to or more than the minimum wind speed at the positions of all the occupants in the room 10 or all the occupants who are seated. it can. It is also possible to set the time average value of the wind speed as the blowing condition. Specifically, there is a condition that the time average value of the wind speed is within a predetermined range at the positions of all the occupants in the room 10. The blowing conditions may be different depending on the temperature. Further, when the air volume or the wind direction is changed by the setting changing unit 80, the blowing conditions may also be changed. The ventilation conditions can be given by the administrator through, for example, the PC 150.

The blast control unit 120 determines the blast control mode based on the determination result in the blast condition determination unit 126. Specifically, when the current blast condition determination unit 126 determines that the blast condition is satisfied, the current state is maintained. On the other hand, if the ventilation conditions are not satisfied, the air volume is reduced or increased, or the wind direction is changed so as to satisfy the ventilation conditions. The blower control unit 120 transmits an instruction to execute the determined control mode to the blower mechanism 74. The blower control unit 120 confirms whether or not the blower condition is actually satisfied as a result of instructing the blower mechanism 74 to blow air, and if not, repeats a series of processes again. May be good.

The correction determination unit 130 determines whether or not the wind speed distribution estimated by the wind speed distribution estimation unit 100 needs to be corrected based on the determination conditions. The determination condition is a condition for whether or not to perform correction. The determination condition is set by the administrator through, for example, the PC 150. The correction determination unit 130 includes an actual measurement value estimation value comparison unit 132, a ventilation setting change processing unit 134, a layout change processing unit 136, and an alert output unit 138.

The measured value estimation value comparison unit 132 is an example of the actual measurement value estimation value comparison means, and the wind speed distribution (that is, the estimated value) estimated by the wind speed distribution estimation unit 100 is the wind speed information acquired by the wind speed position acquisition unit 102 after the estimation. (That is, the measured value) is compared. The correction determination unit 130 determines whether or not the accuracy of the estimated value is within a predetermined range in light of the determination conditions.

The ventilation setting change processing unit 134 acquires the setting change information based on the user instruction from the setting change unit 80. In this case, the correction determination unit 130 determines whether or not the already estimated wind speed distribution should be corrected by changing the setting. As the determination condition in this case, for example, whether the setting change instructs a large air volume change or a large wind direction change is set. If the determination condition is satisfied, the correction determination unit 130 determines that correction is necessary.

The layout change processing unit 136 acquires information regarding the layout change. When the layout change information is acquired, the correction determination unit 130 determines the necessity of correction in light of the determination conditions. Examples of the information regarding the layout change acquired by the layout change processing unit 136 include information regarding the opening / closing of the moving partition 170 shown in the figure, as well as information such as opening / closing of the door and opening / closing of the window. The determination condition is set from the viewpoint of whether or not the acquired layout change significantly changes the air flow in the room 10. For example, it is set that the correction is necessary when the moving partition 170 is opened and closed, and the correction is not necessary when the door or window is opened and closed.

The alert output unit 138 is an example of an output means, and when it is determined by the correction determination unit 130 that correction is necessary, an alert message calling attention is output as an image or voice. For example, the alert output unit 138 outputs an alert message to a log file (referring to an automatically created electronic management record) in the control unit 90, which is not shown. This allows the manager to perceive that the wind speed distribution needs to be corrected. The alert output unit 138 can also display an alert message on the display screen of the PC 150.

The wind speed sensor device 140 is a device including a wind speed sensor 142 and a position sensor 144. The wind speed sensor device 140 can be constructed by attaching the wind speed sensor 142 to, for example, a movable terminal device such as a PC or a smartphone. The wind speed sensor 142 is at least a sensor capable of measuring the wind speed, and may further be capable of measuring the wind direction. The principle of the wind speed sensor 142 is not particularly limited, and various types such as a wind turbine type, an ultrasonic type, and a thermal type can be used. The position sensor 144 is a sensor that can identify the position in the room with a certain degree of accuracy. Examples of the position sensor 144 include a sensor based on the principle of triangulation of radio waves. The accuracy allowed for the position sensor 144 depends on the accuracy required for the estimated wind speed distribution. For example, when the wind speed distribution is performed on a horizontal plane (in other words, a specific height level), it is sufficient for the position sensor 144 to obtain the horizontal position, even if the vertical position cannot be obtained. Good.

The PC 150 is a terminal device for controlling the operation of the control unit 90 in the air conditioner 70. The PC 150 is provided with a layout input unit 152 and an attendance input unit 154. The layout input unit 152 is for inputting the above-mentioned layout information. The occupancy input unit 154 is for inputting occupancy information such as whether or not the occupant is in the room 10 or whether or not the occupant is in a predetermined seat. In the PC 150, it is possible to further set the reference of the area division in the area division unit 106 of the wind speed distribution estimation unit 100 and the selection of the template to be adopted in the parameter fitting unit 108. Further, from the PC 150, it is also possible to set the ventilation condition of the ventilation condition determination unit 126 in the ventilation control unit 120, set the correction determination condition in the correction determination unit 130, and the like.

The smartphone 160 is a portable terminal device held by a resident. The smartphone 160 is provided with a position sensor 162. The position sensor 162 is a sensor that can identify a position in a room with a certain degree of accuracy, such as a sensor based on the principle of triangulation of radio waves. The position information acquired by the smartphone 160 is transmitted to the air conditioner 70. As a result, the person position acquisition unit 122 of the air blower control unit 120 of the air conditioner 70 can acquire the position information of the occupants.

The moving partition 170 is a mobile partition provided in the room 10, and is a facility that affects the air flow in the room 10. By opening the moving partition 170, the room 10 is divided into two small rooms, and by closing the moving partition 170, the room 10 becomes one large room. The moving partition 170 is provided with a sensor 172. The sensor 172 detects whether the moving partition 170 is open or closed. The detection information by the sensor 172 is transmitted to the air conditioner 70.

Subsequently, the operation of the air conditioning system 60 will be described with reference to FIG. FIG. 3 is a flowchart showing an example of processing in the air conditioning system 60.

In the process shown in FIG. 3, it is assumed that the air conditioner 70 first starts air conditioning (S10) without receiving any special ventilation control. In this state, the manager of the air conditioner 70 sets the wind speed sensor devices 140 at several places in the room 10 (S12). In the wind speed sensor device 140, the wind speed sensor 142 acquires the wind speed information, and the position sensor 144 acquires the position information (S14). The wind speed sensor device 140 transmits the acquired wind speed information and position information to the control unit 90 of the air conditioner 70 (S16).

Further, the administrator operates the layout input unit 152 of the PC 150 to input the layout information, and operates the attendance input unit 154 to input the presence information (S18). The PC 150 transmits the input layout information and presence information to the control unit 90 of the air conditioner 70 (S20).

In the control unit 90 of the air conditioner 70, the parameter fitting unit 108 of the wind speed distribution estimation unit 100 performs parameter fitting to the template and constructs an estimation formula that gives the wind speed distribution (S22). In the ventilation control unit 120 of the control unit 90, the person position acquisition unit 122 acquires the position of each seat of the occupant, and the estimated value calculation unit 124 calculates the estimated value of the wind speed in each seat (S24). Then, the ventilation condition determination unit 126 of the ventilation control unit 120 determines whether or not the ventilation in each seat satisfies the ventilation condition (S26). If so, maintain the current ventilation. If not satisfied, the ventilation control unit 120 determines a new ventilation mode and instructs the ventilation mechanism 74 (S28). The blower mechanism 74 changes the blower according to the instruction (S30).

Here, focusing on steps S22 to S26, a specific example will be given to supplementarily explain the processing mode. First, regarding the construction of the estimation formula in step S22, in the embodiment shown below, almost the same amount of air is blown from each of the air outlets 22 and the like in the

indoor units

20 and 30, and the center of the air blowing direction. It is assumed that the air is blown symmetrically with respect to the line. In addition, the wind speed distribution shall be determined only for an appropriate horizontal plane in the room 10 (for example, the average head or chest height of the occupants). Therefore, in the horizontal plane around the

indoor units

20 and 30, coordinate systems are set in the vicinity of the air outlets 22 and the like, and the same wind speed distribution template is applied to each of the set coordinate systems.

4 and 5 are diagrams showing a process of setting a coordinate system in the room 10. FIG. 4 shows the periphery of the indoor unit 20 in FIG. 1, and FIG. 5 shows the entire area of the indoor unit 10.

In the example shown in FIG. 4, the circumference of the indoor unit 20 is divided into eight coordinate regions A, B, C, D, E, F, G, and H at an angle of 45 degrees about the indoor unit 20. There is. Each coordinate area A to H defines a spatial range for setting the coordinate system. Of these, the coordinate areas A and B are the areas in which the air from the air outlet 22 is dominant, the coordinate areas C and D are the areas in which the air from the air outlet 24 is dominant, and the coordinate areas E and F are the areas in which the air is blown. The air blown from the air outlet 26 is the dominant range, and the coordinate areas G and H are the areas where the air blown from the air outlet 28 is dominant.

For each coordinate area A to H, xy orthogonal straight line coordinates are set. In the case of the periphery of the blower port 22, the center line in the blower direction (this is a line passing through the center in the longitudinal direction of the blower port 22 and extending outward in the longitudinal direction) is defined as the x-axis. The x-axis is also a boundary line separating the coordinate regions A and B. In the coordinate areas A and B, the y-axis perpendicular to the x-axis is set. Similarly, the xy orthogonal linear coordinates are set in the coordinate regions C to H. The xy orthogonal linear coordinates set in the coordinate area A and the coordinate area B, the coordinate area C and the coordinate area D, the coordinate area E and the coordinate area F, and the coordinate area G and the coordinate area H are between the respective coordinate areas. It is line symmetric with respect to the x-axis passing through. Further, the xy orthogonal linear coordinates set in the coordinate regions A to H are rotationally symmetric at 90 degrees with respect to the center of the indoor unit 20. The xy orthogonal linear coordinates given here are an example, and other coordinate systems such as orthogonal curvilinear coordinates such as polar coordinates can be used.

FIG. 5 is a diagram for explaining the setting of the coordinate region when two

indoor units

20 and 30 are present in the room 10, as shown in FIG. In this case, first, as shown in FIG. 4, eight coordinate regions A to H in which the air blown from each air outlet 22 or the like of the indoor unit 20 is dominant are set around the indoor unit 20. Similarly, around the indoor unit 30, eight coordinate regions I to P in which the air from each air outlet 32 or the like of the indoor unit 30 is dominant are set. At this time, the coordinate area B and the coordinate area I, the coordinate area C and the coordinate area P, the coordinate area D and the coordinate area O, and the coordinate area E and the coordinate area N are in an overlapping relationship with each other until they reach the wall surface 12. is there. Therefore, the coordinate region is defined depending on which of the

indoor units

20 and 30 is dominant. In the example shown in FIG. 5, it is assumed that the performances of the

indoor units

20 and 30 are the same, and the coordinate area B and the coordinate area I are formed by the dividing line 180 equidistant from the

indoor units

20 and 30. The coordinate area C and the coordinate area P, the coordinate area D and the coordinate area O, and the coordinate area E and the coordinate area N are separated.

6 and 7 are diagrams illustrating an example of a wind speed distribution template. As described above, it is assumed that the same ventilation is performed in each of the coordinate regions A to P, and that the positions (x, y) in the respective xy orthogonal linear coordinates have the same wind speed distribution V (x, y). Assume. Therefore, in FIGS. 6 and 7, an example of a wind speed distribution template is displayed only for the coordinate region A.

FIG. 6 is a diagram showing the contour lines of the wind speed distribution V when the wind speed distribution V (x, y) is expressed by the linear equations of x and y as the following equation.

V (x, y) = ax + by + c ... (Equation 1)
In Equation 1, the real number parameters a, b, and c are undecided at the stage of the template, and are determined by performing parameter fitting so as to be close to the actual wind speed. In this template, when the parameter a is negative, the closer to the air outlet 22, the faster the wind speed, and when the parameter b is negative, the closer to the x-axis, which is the central axis of the air, the faster the wind speed. The distribution V (x, y) can be expressed.

FIG. 7 is a diagram showing the contour lines of the wind speed distribution V when the wind speed distribution V (x, y) is expressed by the quadratic equation of x and the linear equation of y as follows.

V (x, y) = a (x−b) ² + cy + d ・・・ (Equation 2)
The real number parameters a, b, c, and d are undecided at the stage of the template, and are determined by performing parameter fitting so as to be close to the actual wind speed. In this template, when the parameter a is negative and the parameter b is positive, the wind speed becomes maximum at the point of x = b, and when the parameter c is negative, the closer to the x-axis which is the central axis of the blast. It is possible to express the wind speed distribution V (x, y) in which the wind speed becomes faster.

In the examples shown in FIGS. 6 and 7, only the coordinate area A is shown, but the same wind speed distribution V (x, y) is applied to the other coordinate areas B to P. On the boundary line of the coordinate region, the value of the wind speed distribution V is continuous due to the symmetry of the coordinate system. Therefore, the wind speed distribution of the entire room 10 can be expressed in a simple format. The templates shown in FIGS. 6 and 7 are examples, and as described above, various templates using a polynomial of spatial coordinates, a Fourier series, an exponential function, or the like can be adopted. Further, the wind speed distribution may be obtained not only for a specific horizontal plane but also for a plurality of vertical levels (that is, a three-dimensional wind speed distribution is obtained).

Further, in the above description, the coordinate region directly below the

indoor units

20 and 30 in the indoor 10 is not mentioned. For the coordinate area directly under the

indoor units

20 and 30, it is conceivable to extend the xy orthogonal linear coordinates set in the surrounding coordinate areas A to P to the center of the

indoor units

20 and 30 and adopt the same template. .. However, when the template shown in FIG. 6 and Equation 1 is adopted, the wind speed is the highest immediately below the center of the

indoor units

20 and 30, so it is considered that a realistic wind speed is not given. On the other hand, when the templates shown in FIGS. 7 and 2 are adopted, the wind speed is weak directly under the

indoor units

20 and 30, and it is expected that a realistic wind speed distribution will be provided. In this way, when using a template that is simple to some extent, it is necessary to consider how realistic the wind speed distribution is. Another measure is to obtain the wind speed distribution in the area directly under the

indoor units

20 and 30 separately from the surrounding coordinate areas A to P. A mode for dividing the area for obtaining the wind speed distribution will be described later.

Next, the parameter fitting for the template will be explained. FIG. 8 is a diagram illustrating wind speed measurement for performing parameter fitting. FIG. 8 is a diagram corresponding to FIG. 5, and shows a state in which

wind speed sensors

190, 192, 194, and 196 are provided at four locations in the room 10. The wind speed sensor 190 and the like are provided in a horizontal plane at the same height at which the wind speed is to be measured. Since the wind speed generally has a temporal turbulence, the wind speed sensor 190 or the like measures the wind speed over a certain long time (for example, 1 minute or more). Further, in the wind speed sensor device 140 corresponding to the wind speed sensor 190 or the like, the position sensor 144 acquires the position information in the room 10.

In the example shown in FIG. 8, the wind speed sensor 190 is provided at the coordinates (x, y) = (x1, y1), and the wind speed sensor 192 is provided at the coordinates (x, y) = (x2,0). The wind speed sensor 194 is provided at the coordinates (x, y) = (x3, y3), and the wind speed sensor 196 is provided at the coordinates (x, y) = (x4, y4). Although these wind speed sensors 190 and the like are provided in different coordinate regions, since they utilize the symmetry as described above, the positions can be specified on a common coordinate axis. Further, this makes it possible to accurately estimate the wind speed distribution even if the number of installed wind speed sensors 190 or the like or the number of installed locations is reduced.

The acquired position and wind speed information is used for parameter fitting in the wind speed distribution template. For example, when using the template shown in FIG. 6 and Equation 1, there are three parameters a, b, and c to be determined. Therefore, the data obtained by the four wind speed sensors 190 and the like is larger than the number required to determine the three parameters a, b, and c. Therefore, for example, parameter fitting by the least squares method is performed to determine the parameters a, b, and c that minimize the difference from the four acquired data.

On the other hand, when using the template shown in FIG. 7 and Equation 2, there are four parameters a, b, c, and d to be determined. Therefore, parameter fitting that immediately determines the values of the parameters a, b, c, and d is possible based on the data obtained by the four wind speed sensors 190 and the like.

In the room 10, there is generally little disturbance and stable ventilation is performed. Therefore, for example, the four wind speed sensors 190 may be moved after an appropriate time has elapsed, and parameter fitting including the wind speed data may be performed at the moved positions. This makes it possible to improve the estimation accuracy of the wind speed distribution in the entire space.

As a result of parameter fitting, the wind speed distribution in the room 10 can be obtained. When a two-dimensional wind speed distribution is obtained using Equation 1 or Equation 2, the wind speed distribution is given by an estimation equation having the form of V (x, y). Further, when the three-dimensional wind speed distribution is obtained, the wind speed distribution is given by an estimation formula having the form of V (x, y, z) using the vertical coordinates z as well. Therefore, if appropriate position coordinates (x, y) or (x, y, z) are given, the wind speed at that position can be estimated.

FIG. 9 is a diagram showing an example of finding the position of a resident in the room in step S24. In FIG. 9, the desk 44 and the chair 46 shown in FIG. 1 are shown in the room 10. Here, assuming that the vicinity of the center of the chair 46 is the position of the occupant, the information on the position where the coordinates (x, y) = (x5, y5) is acquired is acquired. As a result, in step S24, the estimated value V (x5, y5) of the wind speed at this position can be acquired. Similarly, in step S24, the estimated value of the wind speed is acquired for the positions of all the occupants.

In step S26, it is determined whether or not the estimated values of the wind speeds at the obtained positions of all the occupants satisfy the ventilation condition. As the blowing condition, for example, a condition that the wind speed is equal to or less than a predetermined value Vmax is set. In the example shown in FIG. 9,

V (x5, y5) ≤ Vmax ... (Equation 3)
Is evaluated. Similarly, in step S26, it is evaluated whether or not the wind speed at the positions of all the occupants is Vmax or less.

As a result of the evaluation, if the wind speed at the positions of all the occupants is Vmax or less, it is judged that the ventilation conditions are satisfied and it is not necessary to change the ventilation settings. On the other hand, when the wind speed at the position of at least one occupant exceeds Vmax, it is determined that the ventilation condition is not satisfied. Therefore, for example, control for changing the wind direction or control for reducing the air volume is performed so as to satisfy the blowing condition. As a result, the comfort of the entire room 10 is ensured.

Next, with reference to FIG. 10, processing when the layout of the room 10 is complicated will be described. FIG. 10 is a diagram showing a room 200 similar to the room 10 shown in FIG. In FIG. 10, the same or similar configurations as those in FIG. 1 and the like are designated by the same reference numerals, and the description thereof will be omitted or simplified.

In FIG. 10, as in FIG. 1, two

indoor units

20 and 30 are provided in the room 200. However, the room 200 shown in FIG. 10 is different from the room 10 shown in FIG. 1 in that a partition 202 having a height close to the ceiling is provided. Since the air conditioning in the room 200 is affected by the partition 202, it is necessary to devise the estimation of the velocity distribution.

As shown in FIG. 10, a relatively narrow area 206 is formed in the room 200 by the partition 202 and the wall surface 12. This area 206 includes only the air outlet 28 of the indoor unit 20. Further, the shape of the wide area 204 not surrounded by the partition 202 is also complicated.

Therefore, in the example shown in FIG. 10, the room 200 is divided into a plurality of areas based on the layout information, and the ventilation is requested separately for each area. Specifically, the room 200 is divided into a wide area 204 and a narrow area 206, and the wider area 204 is divided into an area indicated by the symbol S located behind the partition 202 when viewed from the indoor unit 20, and other areas. It is divided into and.

In the area of the wide area 204 excluding the range indicated by the reference numeral S, the coordinate area is set in the same manner as in the example of FIG. 5, and the coordinate areas A to E are set around the indoor unit 20. .. However, the range of the coordinate areas A and E is set narrower than that in the example of FIG. In these coordinate areas A to E and the coordinate areas I to P around the indoor unit 30, the wind speed distribution can be obtained in the same manner as in the case described with reference to FIG. 5 and the like.

On the other hand, in the area indicated by the symbol S in the wide area 204, the air blown from the air outlet 22 of the indoor unit 20 does not reach directly. Therefore, in this area, for example, a process assuming that the wind speed is zero is performed. Alternatively, for this area only, for example, the templates shown in FIG. 6 and Equation 1 are applied, and parameter fitting based on the actual wind speed is performed to estimate the wind speed distribution.

For the narrow area 206, the wind speed distribution is estimated by performing parameter fitting based on the actual wind speed after applying an appropriate template in consideration of the influence of the partition 202 and the wall surface 12.

In this way, for areas where it is difficult to apply the same wind speed distribution as other areas, parameter fitting is performed again after applying the same or different template as other areas. This makes it possible to estimate the wind speed distribution suitable for the actual situation in the area.

Next, a case where a layout change occurs will be described with reference to FIG. FIG. 11 is a diagram corresponding to FIG. 5, in which the room 210 is separated into two

areas

212 and 214 by a moving partition 170. The moving partition 170 has a floor-to-ceiling height, and when closed, there is almost no air flow between the

areas

212 and 214. On the other hand, when the moving partition 170 is opened, the room 10 becomes a single large space as shown in FIG. 1 or FIG.

Here, first consider the state in which the moving partition 170 is open. In this case, as described with reference to FIG. 5 and the like, the coordinate areas A to P are set for the room 10, and the velocity distribution can be obtained by performing parameter fitting on the template. In this state, it is assumed that the moving partition 170 is closed and the state shown in FIG. 11 is reached. In this case, the sensor 172 of the moving partition 170 detects the closed state and transmits it to the control unit 90 of the air conditioner 70.

In the control unit 90, the layout change processing unit 136 of the correction determination unit 130 recognizes the layout change of the moving partition 170. Then, the correction determination unit 130 determines whether or not the velocity distribution should be corrected according to the determination conditions set in advance.

Judgment conditions and correction modes can be set in various ways. In the example of FIG. 11, the provision of the moving partition 170 narrows the coordinate areas B, C, D, and E around the indoor unit 20, and the coordinate areas I, N, O, and P around the indoor unit 30. Becomes wider. Therefore, as a determination condition, it is assumed that correction is required when opening and closing the moving partition 170. Then, assuming that the wind speed distribution from the air outlet 22 and the like basically does not change, the estimation formula of V (x, y) that gives the wind speed distribution is not changed, and the coordinate regions B, C, D, E, I, N, An embodiment in which the range of O and P is changed between the state shown in FIG. 5 and the state shown in FIG. 11 can be mentioned.

If it is determined that correction is necessary, it is possible to make another correction. For example, for the coordinate regions C and D in the area 212, it is conceivable to correct the wind speed distribution based on the measured values of the wind speed sensor 194 shown in FIG. Specifically, when the measured value in the wind speed sensor 194 increases by α (α is a real number and can be positive or negative), V + α is corrected by adding α to the initial wind speed distribution V in the coordinate regions C and D. It is conceivable that the wind speed distribution will be used later. As another example, when the measured value in the wind speed sensor 194 increases β times (β is a positive real number and may be smaller than 1 or larger than 1), the initial coordinate regions C and D are initially set. It is conceivable that βB obtained by multiplying the wind speed distribution v by β is used as the corrected wind speed distribution. Similarly, it is conceivable to correct the coordinate regions O and P in the area 214 based on the measured values of the wind speed sensor 196 shown in FIG.

Correction can be performed in cases other than layout changes. For example, in the flowchart shown in FIG. 3, after changing the ventilation in step S30, it is conceivable to make a correction to match the wind speed information newly input from the wind speed sensor device 140. That is, when the estimated value of the wind speed distribution and the actually measured value actually measured by the wind speed sensor device 140 are different, the wind speed distribution may be corrected. The judgment condition for correction is that the correction is performed when the difference in wind speed is greater than or equal to the predetermined value, or when the error in wind speed (the difference in wind speed divided by the measured value) is greater than or equal to the predetermined value. be able to.

The correction when the measured value and the estimated value are different may be performed by the mode described with reference to FIG. 11, that is, the correction of adding α to the estimated speed distribution, the correction of multiplying the estimated speed distribution by β, or the like. .. However, if the measured value and the estimated value are different, it is conceivable to make a correction so as to fundamentally review the estimation of the wind speed distribution. Therefore, a different template may be selected, and the parameter fitting may be performed again according to the measured value to estimate the wind speed distribution.

Further, the correction may be performed when the change is made by the setting change unit 80 of the air conditioner 70. When the user changes the temperature, the air volume, the air direction, or the like through the setting changing unit 80, the heating / cooling mechanism 72 and the blowing mechanism 74 in the air conditioner 70 perform blowing according to the change. Therefore, it may be necessary to correct the wind speed distribution estimated before that. Therefore, as the determination conditions for correction, correction is performed when the temperature setting changes by a predetermined value or more, the air volume changes by a predetermined value or more, or the wind direction changes by a predetermined value or more. be able to.

When making corrections, as described above, corrections may be made by adding α to the estimated speed distribution, by multiplying the estimated speed distribution by β, or by making corrections that change the template. Good. Alternatively, the parameter fitting may be performed again without changing the template.

If the correction determination condition is satisfied, the alert output unit 138 in the correction determination unit 130 of the air conditioner 70 may output the alert log. As a result, the administrator can grasp that the correction determination condition is satisfied.

In the above explanation, it is assumed that the wind speed measurement by the wind speed sensor device 140 is continuously performed. However, as long as the operation of the air conditioner 70 is stable, it is expected that the wind speed will be measured every time under the same operating conditions. Therefore, once the estimated wind speed distribution is memorized, the next time, when the temperature, air volume, wind direction, and layout are the same, the wind speed around the occupants is estimated based on the memorized wind speed distribution. You may do so. This makes it possible to control the wind speed even when the wind speed sensor device 140 is removed.

Further, in the above description, in order to use the same template around the air outlet 22 and the like, local xy orthogonal linear coordinates are introduced around the air outlet 22 and the like. However, for example, even if a single coordinate is introduced in the room 10, it is possible to use the same template around each of the air outlets 22 and the like. Specifically, mathematical processing may be performed to translate and rotate the template.

10 indoors, 12 wall surfaces, 20 indoor units, 22, 24, 26, 28 air outlets, 30 indoor units, 32, 34, 36, 38 air outlets, 40, 44, 48, 52 desks, 42, 46, 50, 54 , 56, 58 chairs, 60 air conditioning system, 70 air conditioner, 72 heating and cooling mechanism, 74 air blowing mechanism, 76 air volume adjustment unit, 78 wind direction adjustment unit, 80 setting change unit, 90 control unit, 100 wind speed distribution estimation unit, 102 wind speed Position acquisition unit, 104 layout acquisition unit, 106 area division unit, 108 parameter fitting unit, 110 correction processing unit, 120 ventilation control unit, 122 person position acquisition unit, 124 estimated value calculation unit, 126 ventilation condition determination unit, 130 correction determination Unit, 132 Measured value estimation value comparison unit, 134 Blower setting change processing unit, 136 Layout change processing unit, 138 Alert output unit, 140 Wind speed sensor device, 142 Wind speed sensor, 144 Position sensor, 152 Layout input unit, 154 Attendance input Department, 160 smartphone, 162 position sensor, 170 moving partition, 172 sensor, 180 dividing line, 190, 192, 194, 196 wind speed sensor, 200 indoor, 202 partition, 204, 206 area, 210 indoor, 212, 214 area.

Claims

An air conditioner that has a blower port facing the room and blows air from the blower port to air-condition the room.
A wind speed position acquisition means for acquiring wind speed information measured in the vicinity of the terminal device and position information of the terminal device from a terminal device provided with a wind speed sensor arranged in the room.
An estimation means for estimating a wide range of wind speed distribution in the room by matching the wind speed distribution template prepared in advance with the acquired wind speed information and the position information.
An air conditioning system characterized by being equipped with.
In the air conditioning system according to claim 1,
The air conditioner includes two or more of the air outlets.
The air conditioning system is characterized in that the estimation means applies the same template to the ventilation range of each of the ventilation ports, performs the same parameter fitting, and estimates the wind speed distribution.
In the air conditioning system according to claim 1,
The template is an air conditioning system characterized in that it is formed symmetrically with respect to the center line in the blowing direction.
In the air conditioning system according to claim 1,
The wind speed position acquisition means acquires the wind speed information measured by the plurality of wind speed sensors arranged on substantially the same horizontal plane, and obtains the wind speed information.
The air conditioning system is characterized in that the estimation means estimates the wind speed distribution on a horizontal plane substantially the same as the wind speed sensor.
In the air conditioning system according to claim 1,
A person position acquisition means for acquiring information on the positions of a plurality of people in the room, and
Based on the estimated wind speed distribution, a control means for controlling the ventilation by the air conditioner so that the wind speed at each position of the plurality of people satisfies the ventilation condition.
An air conditioning system characterized by being equipped with.
In the air conditioning system according to claim 1,
The air conditioner has a changing means for changing at least one of air volume, wind direction, and temperature in response to a user's instruction.
An air conditioning system comprising a correction means for correcting the wind speed distribution when a change is made by the change means.
In the air conditioning system according to claim 1,
An air-conditioning system comprising a correction means for correcting the wind speed distribution when there is a change in the air-conditioning-related layout in the room.
In the air conditioning system according to claim 1,
An actually measured value estimated value comparing means for comparing the actually measured value of the wind speed newly measured by the wind speed sensor with the estimated value based on the estimated wind speed distribution.
As a result of comparison by the measured value estimated value comparing means, when the accuracy of the estimated value is worse than a predetermined value, the correction means for correcting the wind speed distribution and the correction means.
An air conditioning system characterized by being equipped with.
In the air conditioning system according to claim 1,
An actually measured value estimated value comparing means for comparing the actually measured value of the wind speed newly measured by the wind speed sensor with the estimated value based on the estimated wind speed distribution.
As a result of comparison by the actually measured value estimated value comparing means, when the accuracy of the estimated value is worse than a predetermined value, an output means that calls attention is output.
An air conditioning system characterized by being equipped with.
In the air conditioning system according to claim 1,
A dividing means for dividing the room into a plurality of areas based on the layout information related to air conditioning in the room is provided.
The estimation means is an air conditioning system characterized in that the wind speed distribution is estimated by a method different for each divided area.
A control device having a blower port directed toward a room and controlling an air conditioner that blows air from the blower port to perform air conditioning in the room.
A wind speed position acquisition means for acquiring wind speed information measured in the vicinity of the terminal device and position information of the terminal device from a terminal device provided with a wind speed sensor arranged in the room.
An estimation means for estimating a wide range of wind speed distribution in the room by matching the wind speed distribution template prepared in advance with the acquired wind speed information and the position information.
A control device comprising.