Ventilation device

Abstract

To provide a ventilation device capable of adjusting an air volume using a separate sensor without preparing a dedicated sensor.SOLUTION: A ventilation device 10a changes an air volume in response to activation of an external device. The ventilation device 10a comprises: a fan 15; a motor 14 that rotates the fan 15; a motor drive control unit 13 that controls the drive of the motor 14; a power supply terminal block 11 to which a voltage for driving the motor 14 is input from a power supply 30; and an external input terminal 121 to which a voltage is input when the external device is operating. The motor drive control unit 13 controls the air volume by changing a rotation speed of the motor 14 based on whether a voltage is input to the external input terminal 121.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a blower device capable of adjusting the air volume in conjunction with the operation of an external device.

Background Art

[0002] The required ventilation volume of a room in a building varies depending on the type of room and is defined by the Building Standards Law and the like. For example, the required ventilation volume of a machinery room is determined based on the calorific value of the equipment stored in the machinery room. Also, the required ventilation volume of a living room is determined based on the number of people in the living room.

[0003] In a machinery room, the calorific value of the equipment fluctuates depending on whether the equipment is turned on or off. In a living room, there are fluctuations in the number of people present. And the required ventilation volume of a room changes depending on the state of the room. For this reason, in the law regarding the improvement of the energy consumption performance of buildings, it is recommended to avoid unnecessary energy consumption by using sensors such as temperature sensors or carbon dioxide (CO2) sensors to check the state of the room and automatically adjusting the ventilation air volume based on the state of the room.

[0004] Therefore, it can be said that in a blower device, a function of checking the surrounding state using a sensor or the like and adjusting the air volume is necessary.

[0005] For example, Patent Document 1 discloses a blower device provided with a human body sensor that detects heat emitted from a human body within the range where blowing is possible and outputs information on the direction of the presence of a person, and adjusts the air volume and the blowing direction based on the output information from the human body sensor.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, the blower device described in Patent Document 1 has a function of obtaining information from a human body sensor and controlling the air volume. And the human body sensor included in the blower device described in Patent Document 1 is a dedicated sensor for the blower device, and sensors of other devices with different specifications cannot be used.

[0008] In recent years, with the promotion of energy conservation, the use of devices with sensors has been increasing. For example, it has become common to use lights with human presence sensors in the toilets of buildings.

[0009] However, when a light with a human presence sensor and a blower device with a human presence sensor are arranged in the same room, a plurality of sensors with the same role are arranged in the same room, resulting in wasteful costs and being unfavorable from the perspective of energy conservation. And in the blower device, there is a problem that the configuration and control become complicated by providing a sensor.

[0010] The present disclosure has been made in view of the above, and an object thereof is to obtain a blower device capable of adjusting the air volume by using a sensor of another device without providing a dedicated sensor.

Means for Solving the Problems

[0011] In order to solve the above-described problems and achieve the object, a blower device according to the present disclosure is a blower device that changes the air volume in conjunction with the activation of an external device. The blower device includes a fan, a motor that rotates the fan, a motor drive control unit that controls the drive of the motor, a power supply terminal block to which a voltage for driving the motor is input from a power source, and an external input terminal to which a voltage is input during the operation of the external device. The motor drive control unit controls the air volume by changing the rotation speed of the motor based on the presence or absence of the input of the voltage to the external input terminal.

Effects of the Invention

[0012] According to the present disclosure, an effect is achieved in that a blower device capable of adjusting the air volume can be obtained by using a sensor of another device without providing a dedicated sensor.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

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Figure 8

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Figure 10

Figure 11

Figure 12

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Figure 14

Modes for Carrying Out the Invention

[0014] The air blower device according to the embodiment will be described in detail below with reference to the drawings.

[0015] Embodiment 1. FIG. 1 is an image diagram showing the usage mode of the air blower device system 100 according to Embodiment 1. The arrow in FIG. 1 indicates the air flow in the exhaust of the toilet 1. In the air blower device system 100 according to Embodiment 1, the air blower 10a, which is the air blower device 10, is installed in the ceiling space of a room in the building, and the air in the room is exhausted through a duct. In Embodiment 1, the case where the air blower 10a is installed in the ceiling space 3 of the toilet 1 in a commercial building and the air in the toilet 1 is exhausted through a duct will be described.

[0016] As shown in FIG. 1, the air blower device system 100 according to Embodiment 1 is installed in the toilet 1 of a commercial building that is an office building. The air blower 10a is installed in the ceiling space 3 of the toilet 1. In FIG. 1, the space below the ceiling 2 is the toilet 1. In FIG. 1, the space above the ceiling 2 is the ceiling space 3 of the toilet 1. An exhaust port 4 is installed in the ceiling 2 of the toilet 1.

[0017] The air blower 10a is connected to an indoor duct 6a and an outdoor duct 6b. The air blower 10a and the exhaust port 4 are connected via the indoor duct 6a.

[0018] One end of the indoor duct 6a is connected to the exhaust port 4 and communicates with the interior of the toilet 1, and the other end is connected to the air blower 10a. In the indoor duct 6a, the air of the toilet 1 sucked from the exhaust port 4 flows from the exhaust port 4 toward the air blower 10a.

[0019] One end of the outdoor duct 6b communicates with the outside, and the other end is connected to the air blower 10a. In the outdoor duct 6b, the air of the toilet 1 sucked from the exhaust port 4 and flowing into the air blower 10a flows from the air blower 10a toward the outside.

[0020] FIG. 2 is a diagram showing the configuration of the blower system 100 according to Embodiment 1. FIG. 2 shows the electrical connection of each component together with the configuration of the blower system 100. FIG. 3 is a diagram showing an image of the connection of some components in the blower system 100 according to Embodiment 1. FIG. 3 shows an image of the connection of the power supply 30, the contact 23, the external input terminal block 12, and the light 24 in the blower system 100. The blower system 100 according to Embodiment 1 includes a blower 10a, a light 20 with a human sensor, and a power supply 30.

[0021] The power supply 30 is electrically connected to each of the blower 10a and the light 20 with a human sensor, and applies a voltage to each of the blower 10a and the light 20 with a human sensor. The power supply 30 is electrically connected to a power supply terminal block 11 (to be described later) of the blower 10a by an electric wire 311. Further, the power supply 30 is electrically connected to a contact 23 (to be described later) of the light 20 with a human sensor by an electric wire 312.

[0022] The light 20 with a human sensor is an external device provided outside the blower 10a, is installed on the ceiling 2 of the toilet 1, detects the presence or absence of a person in the toilet 1, and lights up when it detects that there is a person in the toilet 1. The blower 10a is installed in the ceiling space 3 of the toilet 1, and the light  20 with a human sensor is installed on the ceiling 2 of the toilet 1. In a broad sense, it can be said that both the blower 10a and the light 20 with a human sensor are installed in the toilet 1.

[0023] The light 20 with a human sensor includes a human sensor 21, a light control unit 22, a contact 23, and a light 24.

[0024] The human sensor 21 is installed on the ceiling 2 in a region adjacent to the entrance / exit 5 of the toilet 1, and detects the presence or absence of a person in the toilet 1 at a predetermined cycle. When the human sensor 21 detects a person in the toilet 1, the human sensor 21 transmits a person detection signal, which is a signal indicating that a person in the toilet 1 has been detected, to the light control unit 22.

[0025] The light control unit 22 controls the lighting of the light 24 based on the presence or absence of a person in the toilet 1. When there is a person in the toilet 1, the light control unit 22 performs control to turn on the light 24. When there is no person in the toilet 1, the light control unit 22 performs control to turn off the light 24.

[0026] When the light control unit 22 receives a person detection signal transmitted from the presence sensor 21, it turns on the contact 23 and performs control to turn on the light 24. When the light control unit 22 turns on the contact 23, a voltage is applied from the power supply 30 to the light 24. That is, the power supply 30 and the contact 23 function as a live voltage contact. When the person detection signal from the presence sensor 21 is interrupted, the light control unit 22 turns off the contact 23 and performs control to turn off the light 24.

[0027] The first power transmission unit 25 is an electric wire that electrically connects the contact 23 and the light 24. And the second power transmission unit 26 is provided branching from the first power transmission unit 25.

[0028] The second power transmission unit 26 is an electric wire that electrically connects the external input terminal block 12 (to be described later) of the blower 10a and the first power transmission unit 25. That is, the external input terminal block 12 of the blower 10a and the contact 23 are electrically connected via the first power transmission unit 25 and the second power transmission unit 26.

[0029] Thereby, when the contact 23 is in the on state, the voltage applied from the power supply 30 to the contact 23 is also transmitted to the external input terminal block 12 of the blower 10a via the first power transmission unit 25 and the second power transmission unit 26. The external input terminal block 12 transmits the voltage transmitted from the contact 23 via the first power transmission unit 25 and the second power transmission unit 26 to the motor drive control unit 13.

[0030] On the other hand, when the contact 23 is in the off state, the voltage applied from the power supply 30 to the contact 23 is not transmitted to the light 24. For this reason, when the contact 23 is in the off state, the voltage applied from the power supply 30 to the contact 23 is not transmitted to the external input terminal block 12 of the blower 10a.

[0031] The light 24 is lit by the voltage applied from the power supply 30 via the contact 23.

[0032] The air blower 10a always performs the exhaust operation of the air in the toilet 1 except during a predetermined period such as a holiday of a commercial building. The air blower 10a includes a power supply terminal block 11, an external input terminal block 12, a motor drive control unit 13, a motor 14, and a fan 15.

[0033] When a voltage is applied from the power supply 30 to the power supply terminal block 11 of the air blower 10a and the voltage is transmitted to the motor 14 via the motor drive control unit 13, the motor 14 is driven and the fan 15 rotates.

[0034] Also, when a voltage is applied to the external input terminal block 12 of the air blower 10a, the input from the motor drive control unit 13 to the motor 14 is changed and the air volume is changed.

[0035] The external input terminal block 12 has its input side connected to the second power transmission unit 26 of the light 20 with a human sensor, and its output side electrically connected to the motor drive control unit 13. The external input terminal block 12 is provided with an external terminal which is a terminal to which a voltage is applied from an external device of the air blower 10a. That is, the external input terminal block 12 is provided with an external input terminal 121 which is an external terminal and to which a voltage is input from the contact 23 of the light 20 with a human sensor via the first power transmission unit 25 and the second power transmission unit 26.

[0036] When the voltage applied from the power supply 30 to the contact 23 of the light 20 with a human sensor is transmitted from the light 20 with a human sensor, the external input terminal block 12 transmits the voltage to the motor drive control unit 13. Specifically, when the contact 23 of the light 20 with a human sensor is turned on, the voltage applied from the power supply 30 to the contact 23 is applied via the first power transmission unit 25 and the second power transmission unit 26. The external input terminal block 12 transmits the voltage applied from the contact 23 via the first power transmission unit 25 and the second power transmission unit 26 to the motor drive control unit 13.

[0037] The motor drive control unit 13 is electrically connected to each of the power supply terminal block 11, the external input terminal block 12, and the motor 14. The motor drive control unit 13 has a function of outputting to the motor 14 using the input from the power supply terminal block 11, and a control function of controlling the said function. The motor drive control unit 13 outputs a drive voltage for driving the motor 14, which is an input to the motor 14, to the motor 14 to control the drive of the motor 14.

[0038] In normal exhaust operation, the motor drive control unit 13 controls the drive of the motor 14 in the first operation mode. Also, when the light 20 with a human presence sensor lights up, that is, when the light 24 lights up, the motor drive control unit 13 controls the drive of the motor 14 in the second operation mode.

[0039] When the light 20 with a human presence sensor lights up, it is the case where the voltage applied from the power supply 30 to the contact 23 when the contact 23 of the light 20 with a human presence sensor turns on is input to the external input terminal block 12 via the first power transmission unit 25 and the second power transmission unit 26, and it can be said that the said voltage is input from the external input terminal block 12 to the motor drive control unit 13.

[0040] On the other hand, when the light 20 with a human presence sensor is not lit, the contact 23 of the light 20 with a human presence sensor is in an off state, and it is the case where the voltage applied from the power supply 30 to the contact 23 is not input to the external input terminal block 12.

[0041] The first operation mode is the operation mode of the blower 10a at the first air volume, and it is the operation mode of the blower 10a when the light 20 with a human presence sensor is not lit, that is, when the light 24 is not lit.

[0042] The second operation mode is the operation mode of the blower 10a at the second air volume, which is the operation mode of the blower 10a when the light 20 with a human presence sensor is lit, that is, when the light 24 is lit. The air volume of the blower 10a in the second operation mode is larger than the air volume of the blower 10a in the first operation mode. That is, the rotation speed of the motor 14 in the second operation mode is larger than the rotation speed of the motor 14 in the first operation mode.

[0043] Therefore, in the blower system 100, when the light 20 with a human presence sensor changes from the off state to the on state, the drive voltage for turning on the light 20 with a human presence sensor is applied from the power supply 30 to the external input terminal 121, which is the external terminal of the external input terminal block 12 of the blower 10a. When the drive voltage for turning on the light 20 with a human presence sensor is applied from the power supply 30 to the external input terminal block 12, the external input terminal block 12 transmits the voltage to the motor drive control unit 13. When the drive voltage for turning on the light 20 with a human presence sensor is transmitted from the external input terminal block 12, the motor drive control unit 13 changes the input to the motor 14 so as to change the rotation speed of the motor 14 and thus change the air volume of the blower 10a. As a result, in the blower 10a, when the light 20 with a human presence sensor is lit, the input from the motor drive control unit 13 to the motor 14 is changed, and the air volume of the blower 10a is changed.

[0044] The required ventilation volume of Toilet 1 is defined as in the following formula (1) in the Building Standards Law. Also, in order to prevent odor leakage from Toilet 1, it is necessary to keep the inside of Toilet 1 under negative pressure at all times. For this reason, the blower 10a always performs an exhaust operation in the first operation mode. Also, even when the operation in the second operation mode is not performed, the blower 10a can secure the required ventilation volume only by the operation in the first operation mode.

[0045] Required ventilation volume [m 3 / h] = Room volume [m 3 × Required ventilation times per hour [times / h] ···(1) Required ventilation times per hour: 5 to 15 [times / h, depending on the type of living room]

[0046] The hourly required ventilation rate is the number of times of replacing the indoor air per hour, that is, the number of times required within one hour.

[0047] Here, a specific example of the required ventilation volume of Toilet 1 will be described. The following example is an example of the combination of the room volume, required ventilation volume, first air volume, and second air volume of Toilet 1.

[0048] · Room volume of Toilet 1: 100 [m 3 = Floor area 50 [m 2 × Ceiling height 2 [m] · Hourly required ventilation rate: 5 to 15 [times / h] · Required ventilation volume: 100 [m 3 × 5 [times / h]= 500 to, 100 [m 3 × 15 [times / h]= 1500 [m 3 / h] · First air volume: Air volume when the light 20 with a human presence sensor is off = 500 [m 3 / h] · Second air volume: Air volume when the light 20 with a human presence sensor is on = 1500 [m 3 / h]

[0049] As described above, the hourly required ventilation rate of Toilet 1 is 5 to 15 [times / h]. In the air supply device system 100, when the light 20 with a human presence sensor is on, the ventilation air volume is set to the ventilation air volume at which the hourly required ventilation rate of Toilet 1 becomes 15 [times / h]. Also, in the air supply device system 100, when the light 20 with a human presence sensor is off, the ventilation air volume is set to the ventilation air volume at which the hourly required ventilation rate of Toilet 1 becomes 5 [times / h]. Thereby, in the air supply device system 100, while always satisfying the required ventilation volume of Toilet 1, the odor can be exhausted immediately when the odor occurs.

[0050] Also, for example, when the ventilation target is an office, the hourly required ventilation rate is 6 [times / h]. In this case, a specific example of the required ventilation volume of the office is as follows.

[0051] · Room volume of the office: 325 [m 3 = Floor area 130 [m2 × Ceiling height 2.5 [m] · Required number of air changes per hour: 6 [times / h] · Required air change volume: 325 [m 3 × 6 [times / h] = 1950 [m 3 / h]

[0052] Next, the operation of the blower device system 100 according to Embodiment 1 will be described. FIG. 4 is a flowchart for explaining the operation of the blower device system 100 according to Embodiment 1.

[0053] In step S110, it is determined whether a voltage is applied to the external input terminal block 12. Specifically, the motor drive control unit 13 determines whether a voltage is applied to the external input terminal block 12. The motor drive control unit 13 determines whether a voltage is applied to the external input terminal block 12 by determining whether a voltage is input from the external input terminal block 12 to the motor drive control unit 13.

[0054] Whether a voltage is applied to the external input terminal block 12 can be paraphrased as whether a voltage is input to the external input terminal 121 of the external input terminal block 12, can be paraphrased as whether a voltage is input from the external input terminal block 12 to the motor drive control unit 13, and can also be paraphrased as whether the light 20 with a human sensor is lit.

[0055] If it is determined that no voltage is applied to the external input terminal block 12, then in step S110, it is No, and the process proceeds to step S120. If it is determined that a voltage is applied to the external input terminal block 12, then in step S110, it is Yes, and the process proceeds to step S130.

[0056] In step S120, the blower device 10a operates at the first air volume, that is, in the first operation mode. Specifically, the motor drive control unit 13 outputs a voltage of the first pattern to the motor 14 to control the drive of the motor 14 in the first operation mode. Thereby, the blower device 10a operates in the first operation mode. In the first operation mode, the blower device 10a operates at the first air volume. Then, the process returns to step S110.

[0057] In step S130, the blower device 10a operates at the second air volume, that is, in the second operation mode. Specifically, the motor drive control unit 13 outputs a voltage of the second pattern to the motor 14 to control the drive of the motor 14 in the second operation mode. Thereby, the blower device 10a starts operating in the second operation mode. In the second operation mode, the blower device 10a operates at the second air volume which is larger than the first air volume that is the air volume of the blower device 10a in the first operation mode. That is, in the second operation mode, the motor 14 is driven at a rotation speed higher than the rotation speed of the motor 14 in the first operation mode. Then, the process returns to step S110.

[0058] As described above, in the blower device system 100 according to Embodiment 1, the first power transmission unit 25 from the contact 23 to the light 24 in the light 20 with a human sensor is electrically connected to the external input terminal block 12 of the blower device 10a. When there is no voltage applied to the external input terminal block 12, the motor drive control unit 13 of the blower device 10a controls the drive of the motor 14 in the first operation mode to control the air volume of the blower device 10a at the first air volume. When there is a voltage applied to the external input terminal block 12, the motor drive control unit 13 controls the drive of the motor 14 in the second operation mode to control the air volume of the blower device 10a at the second air volume.

[0059] When the motor drive control unit 13 of the blower device 10a controls the motor 14 in the first operation mode and a voltage applied from the power supply 30 to the contact point 23 is input to the external input terminal block 12, the motor drive control unit 13 controls the motor 14 in the second operation mode. That is, when a voltage is input to the external input terminal block 12 while the motor drive control unit 13 controls the air volume of the blower device 10a at the first air volume, the air volume of the blower device 10a is changed to the second air volume in conjunction with the lighting of the light with a human sensor 20.

[0060] In this way, in the blower device system 100, the blower device 10a does not directly obtain the information of the human sensor 21 of the light with a human sensor 20, which is a device outside the blower device 10a, to control the air volume. That is, in the blower device system 100, the contact point 23 switched by the light with a human sensor 20 based on the information of the human sensor 21 is connected to the external input terminal 121 of the blower device 10a. Then, the blower device 10a can adjust the air volume based on the presence or absence of voltage applied to the external input terminal 121 by using the detection information of the human sensor 21 of the light with a human sensor 20.

[0061] The presence or absence of lighting of the light with a human sensor 20 is synonymous with the presence or absence of a person in the toilet 1. Therefore, the blower device 10a according to the first embodiment realizes an energy-saving operation in which the required ventilation frequency per hour is adjusted within a range of 5 times or more and 15 times or less / h according to the presence or absence of a person in the toilet 1.

[0062] In the air blower system 100, the adjustment of the air volume of the air blower 10a is controlled by using the first power transmission unit 25 and the second power transmission unit 26 from the contact 23 to the light 24 in the light with a human presence sensor 20. That is, in the air blower system 100, based on the input from the contact 23 in the light with a human presence sensor 20 to the external input terminal block 12 of the air blower 10a via the first power transmission unit 25 and the second power transmission unit 26, the motor drive control unit 13 increases the rotation speed of the motor 14 to increase the air volume of the air blower 10a. Therefore, in the air blower system 100, the specifications of the human presence sensor 21 of the light with a human presence sensor 20 are not limited, and it is possible to combine the light with a human presence sensor 20 having any human presence sensor 21 with the air blower 10a.

[0063] In the case of an air blower including a dedicated human presence sensor for detecting the presence or absence of a person in the toilet 1 and a sensor information processing functional unit for processing information from the dedicated human presence sensor, by processing the information output from the dedicated human presence sensor in the sensor information processing functional unit, the input transmitted from the motor drive control unit to the motor is changed to vary the air volume. And even in an air blower having such a configuration, it is possible to realize an energy-saving operation in which the required ventilation rate per hour is adjusted within the range of 5 or more and 15 or less times / h according to the presence or absence of a person in the toilet 1.

[0064] Here, when a light with a human presence sensor is installed in the toilet 1, unless the specifications of the human presence sensor of the air blower and the human presence sensor of the light with a human presence sensor are exactly the same, it is necessary to arrange human presence sensors independently for the air blower and the light with a human presence sensor, respectively.

[0065] On the other hand, the blower 10a of the blower system 100 does not include a dedicated human presence sensor for detecting the presence or absence of a person in the toilet 1 and a sensor information processing function unit for processing information from the dedicated human presence sensor. Therefore, compared with a blower equipped with a dedicated human presence sensor and a sensor information processing function unit, the blower 10a can simplify its configuration and control, and an inexpensive blower 10a can be obtained. Also, since the blower 10a does not include a dedicated human presence sensor and a sensor information processing function unit, in the blower system 100, human presence sensors with the same role are not duplicated in the toilet 1, no unnecessary cost is consumed, and it is preferable from the viewpoint of energy saving.

[0066] In addition, in the first embodiment, the case where the blower system 100 is installed in the toilet 1 of a commercial building which is an office building has been shown, but the applicable location of the blower system 100 is not limited to the toilet 1 of a commercial building.

[0067] As described above, the blower system 100 according to the first embodiment has the effect that a blower 10a capable of adjusting the air volume can be obtained by using the human presence sensor 21 of the light 20 with a human presence sensor which is a separate device without a dedicated human presence sensor.

[0068] Second Embodiment. FIG. 5 is an image diagram showing the usage form of the blower system 200 according to the second embodiment. The arrow in FIG. 5 indicates the flow of air in the ventilation of the machine room 7. The blower system 200 according to the second embodiment performs indoor waste heat removal by installing a blower in a room in a building and supplying air to and exhausting the room through a duct. In the second embodiment, a case will be described where an air supply blower 10b and an exhaust blower 10c which are blowers 10 are installed in the machine room 7 of a commercial building, and the indoor waste heat of the machine room 7 is removed by supplying air to the machine room 7 and exhausting the machine room 7 through a duct.

[0069] As shown in FIG. 5, the air blower system 200 according to Embodiment 2 is installed in the machine room 7 of a commercial building which is an office building. In the machine room 7, there is arranged a device 40 which is an external device provided outside the air blower 10 and operates with heat generation. The required ventilation volume of the machine room 7 is defined based on the heat generation amount of the device 40 and the upper limit temperature inside the machine room 7.

[0070] FIG. 6 is a diagram showing the configuration of the air blower system 200 according to Embodiment 2. Regarding the components of the air blower system 200 that are the same as those in Embodiment 1, the same reference numerals as in Embodiment 1 are used, and detailed descriptions thereof are omitted. The air blower system 200 according to Embodiment 2 includes an air supply blower 10b, an exhaust blower 10c, a first device 40a, a second device 40b, and a power supply 30.

[0071] The power supply 30 is electrically connected to each of the air supply blower 10b, the exhaust blower 10c, the first device 40a, and the second device 40b, and applies a voltage to each of the air supply blower 10b, the exhaust blower 10c, the first device 40a, and the second device 40b.

[0072] The power supply 30 is electrically connected to the power supply terminal block 11 of the air supply blower 10b by an electric wire 321. Further, the power supply 30 is electrically connected to the power supply terminal block 11 of the exhaust blower 10c by an electric wire 322. Further, the power supply 30 is electrically connected to a power supply terminal block 41 (to be described later) of the first device 40a by an electric wire 323 having a function as a driving power supply wire of the first device 40a. Further, the power supply 30 is electrically connected to a power supply terminal block 41 (to be described later) of the second device 40b by an electric wire 324 having a function as a driving power supply wire of the second device 40b. And a branch wire 325 and a branch wire 326 are provided branching from the electric wire 323. Also, a branch wire 327 and a branch wire 328 are provided branching from the electric wire 324.

[0073] The branch wire 325 is a wire that electrically connects the external input terminal block 12 of the air supply blower 10b and the wire 323. That is, the external input terminal block 12 of the air supply blower 10b and the power supply 30 are electrically connected via the wire 323 and the branch wire 325.

[0074] The branch wire 326 is a wire that electrically connects the external input terminal block 12 of the exhaust blower 10c and the wire 323. That is, the external input terminal block 12 of the exhaust blower 10c and the power supply 30 are electrically connected via the wire 323 and the branch wire 326.

[0075] The branch wire 327 is a wire that electrically connects the external input terminal block 12 of the air supply blower 10b and the wire 324. That is, the external input terminal block 12 of the air supply blower 10b and the power supply 30 are electrically connected via the wire 324 and the branch wire 327.

[0076] The branch wire 328 is a wire that electrically connects the external input terminal block 12 of the exhaust blower 10c and the wire 324. That is, the external input terminal block 12 of the exhaust blower 10c and the power supply 30 are electrically connected via the wire 324 and the branch wire 328.

[0077] The first device 40a is air conditioning equipment that is a device 40 that operates with heat generation and is installed in the machine room 7. That is, when the first device 40a operates, heat is radiated from the first device 40a into the air in the machine room 7, and the temperature of the machine room 7 rises.

[0078] The second device 40b is elevator equipment that is a device 40 that operates with heat generation and is installed in the machine room 7. That is, when the second device 40b operates, heat is radiated from the second device 40b into the air in the machine room 7, and the temperature of the machine room 7 rises.

[0079] The first device 40a and the second device 40b, which are devices 40, have the following common configuration.

[0080] The device 40 includes a power supply terminal block 41, a drive unit 42, and a device control unit 43.

[0081] The power supply terminal block 41 has its input side electrically connected to the power supply 30 and its output side electrically connected to the drive unit 42 and the device control unit 43. The power supply terminal block 41 applies the voltage applied from the power supply 30 to the drive unit 42 and the device control unit 43.

[0082] When the start switch 44a of the first device 40a, which is the start switch 44 of the device 40, is turned on and the first device 40a shifts from the stop state to the start state, a first voltage is applied from the power supply 30 to the power supply terminal block 41 of the first device 40a via the electric wire 323. The first voltage is a drive voltage for driving the first device 40a.

[0083] At this time, the first voltage is also applied from the power supply 30 to the external input terminal block 12 of the air supply blower 10b via the electric wire 323 and the branch electric wire 325.

[0084] The external input terminal block 12 of the air supply blower 10b transmits the first voltage applied from the power supply 30 via the electric wire 323 and the branch electric wire 325 to the motor drive control unit 13 of the air supply blower 10b.

[0085] Then, the first voltage is also applied from the power supply 30 to the external input terminal block 12 of the exhaust blower 10c via the electric wire 323 and the branch electric wire 326.

[0086] The external input terminal block 12 of the exhaust blower 10c transmits the first voltage applied from the power supply 30 via the electric wire 323 and the branch electric wire 326 to the motor drive control unit 13 of the exhaust blower 10c.

[0087] Similarly, when the start switch 44b of the second device 40b, which is the start switch 44 of the device 40, is turned on and the second device 40b transitions from the stopped state to the startup state, a second voltage is applied from the power supply 30 to the power terminal block 41 of the second device 40b via the electric wire 324. The second voltage is a drive voltage for driving the second device 40b.

[0088] At this time, a second voltage is also applied from the power supply 30 to the external input terminal block 12 of the air supply blower 10b via the electric wire 324 and the branch electric wire 327.

[0089] The external input terminal block 12 of the air supply blower 10b transmits the second voltage applied from the power supply 30 via the electric wire 324 and the branch electric wire 327 to the motor drive control unit 13 of the air supply blower 10b.

[0090] And a second voltage is also applied from the power supply 30 to the external input terminal block 12 of the exhaust blower 10c via the electric wire 324 and the branch electric wire 328.

[0091] The external input terminal block 12 of the exhaust blower 10c transmits the second voltage applied from the power supply 30 via the electric wire 324 and the branch electric wire 328 to the motor drive control unit 13 of the exhaust blower 10c.

[0092] The drive unit 42 operates by the voltage input from the power supply 30 via the power terminal block 41. Also, the drive unit 42 operates under the control of the device control unit 43.

[0093] When the start switch 44 of the device 40 is turned on, the device control unit 43 controls the operation of the drive unit 42.

[0094] The air supply blower 10b is a blower installed in the machine room 7 and performs air supply to the machine room 7 via a duct. The air supply blower 10b is installed near the ceiling 8 on one end side in the machine room 7.

[0095] The exhaust blower 10c is installed in the machine room 7 and is a blower that exhausts the air in the machine room 7 through a duct. The exhaust blower 10c is installed near the ceiling 8 on the other end side in the machine room 7.

[0096] In the air supply system 200, the air supply blower 10b supplies air to the machine room 7, and the exhaust blower 10c exhausts the air in the machine room 7, thereby ventilating the machine room 7 and discharging the heat in the room. The air supply blower 10b and the exhaust blower 10c always perform the air ventilation operation of the machine room 7 except during a predetermined period such as holidays of commercial buildings.

[0097] The air supply blower 10b is connected to an outdoor duct 6c and an indoor duct 6d.

[0098] One end of the outdoor duct 6c communicates with the outside, and the other end is connected to the air supply blower 10b. The outdoor air sucked from the outside flows toward the air supply blower 10b through the outdoor duct 6c.

[0099] One end of the indoor duct 6d communicates with the inside of the machine room 7, and the other end is connected to the air supply blower 10b. The outdoor air sucked from the outside and flowing into the air supply blower 10b flows from the air supply blower 10b toward the inside of the machine room 7 through the indoor duct 6d.

[0100] The exhaust blower 10c is connected to an indoor duct 6e and an outdoor duct 6f.

[0101] One end of the indoor duct 6e communicates with the inside of the machine room 7, and the other end is connected to the exhaust blower 10c. The air in the machine room 7 sucked from the inside of the machine room 7 flows toward the exhaust blower 10c through the indoor duct 6e.

[0102] The outdoor duct 6f has one end communicating with the outdoors and the other end connected to the exhaust blower 10c. The air in the interior of the machine room 7 that is sucked into the outdoor duct 6f from the interior of the machine room 7 and flows to the exhaust blower 10c flows from the exhaust blower 10c toward the outdoors.

[0103] The supply blower 10b and the exhaust blower 10c have the same configuration as the blower 10a according to Embodiment 1.

[0104] In addition, in Embodiment 2, an external input terminal block 12 of the supply blower 10b is provided with an external input terminal 122 to which a voltage is applied from a power source 30. A first voltage is applied to the external input terminal 122 from the power source 30 via an electric wire 323 and a branch electric wire 325. Also, a second voltage is applied to the external input terminal 122 from the power source 30 via an electric wire 324 and a branch electric wire 327.

[0105] The external input terminal block 12 of the supply blower 10b transmits the voltage applied from the power source 30 to the motor drive control unit 13 of the supply blower 10b.

[0106] In addition, in Embodiment 2, an external input terminal block 12 of the exhaust blower 10c is provided with an external input terminal 123 to which a voltage is applied from a power source 30. A first voltage is applied to the external input terminal 123 from the power source 30 via an electric wire 323 and a branch electric wire 326. Also, a second voltage is applied to the external input terminal 123 from the power source 30 via an electric wire 324 and a branch electric wire 328.

[0107] The external input terminal block 12 of the exhaust blower 10c transmits the voltage applied from the power source 30 to the motor drive control unit 13 of the exhaust blower 10c.

[0108] When the motor drive control unit 13 of the air supply blower 10b is in the stopped state, if at least one of the devices 40 installed in the machine room 7 is activated, that is, if at least one of the first device 40a and the second device 40b is activated, it performs control to start driving the motor 14 and control to start the air supply operation of the air supply blower 10b.

[0109] When the motor drive control unit 13 of the exhaust blower 10c is in the stopped state, if at least one of the devices 40 installed in the machine room 7 is activated, that is, if at least one of the first device 40a and the second device 40b is activated, it performs control to start driving the motor 14 of the exhaust blower 10c and control to start the exhaust operation of the exhaust blower 10c.

[0110] When at least one of the devices 40 installed in the machine room 7 is activated, it means that a voltage is input from the power supply 30 to the external terminals of the external input terminal block 12 of the blower 10 installed in the machine room 7. When the device 40 is in the stopped state, no voltage is input from the power supply 30 to the external terminals of the external input terminal block 12 of the blower 10.

[0111] Also, when the first device 40a is activated, it corresponds to the case where a first voltage is applied from the power supply 30 to the external input terminal 122 of the external input terminal block 12 of the air supply blower 10b via the electric wire 323 and the branch electric wire 325.

[0112] Also, when the first device 40a is activated, it corresponds to the case where a first voltage is applied from the power supply 30 to the external input terminal 123 of the external input terminal block 12 of the exhaust blower 10c via the electric wire 323 and the branch electric wire 326.

[0113] Also, when the second device 40b is activated, it corresponds to the case where a second voltage is applied from the power supply 30 to the external input terminal 122 of the external input terminal block 12 of the air supply blower 10b via the electric wire 324 and the branch electric wire 327.

[0114] When the second device 40b is activated, it corresponds to the case where a second voltage is applied from the power supply 30 to the external input terminal 123 of the external input terminal block 12 of the exhaust blower 10c via the electric wire 324 and the branch electric wire 328.

[0115] The motor drive control unit 13 of the air supply blower 10b determines whether the voltage input to the motor drive control unit 13 from the external input terminal block 12 of the air supply blower 10b is the first voltage or the second voltage. When the motor drive control unit 13 of the air supply blower 10b determines that the first voltage has been input to the motor drive control unit 13, it determines that the first device 40a has been activated. When the motor drive control unit 13 of the air supply blower 10b determines that the second voltage has been input to the motor drive control unit 13, it determines that the second device 40b has been activated.

[0116] When the motor drive control unit 13 of the air supply blower 10b determines that the first voltage and the second voltage have been input to the motor drive control unit 13, it determines that the first device 40a and the second device 40b have been activated. When the motor drive control unit 13 of the air supply blower 10b determines that the first voltage and the second voltage have not been input to the motor drive control unit 13, it determines that the first device 40a and the second device 40b are stopped.

[0117] The motor drive control unit 13 of the exhaust blower 10c determines whether the voltage input to the motor drive control unit 13 from the external input terminal block 12 of the exhaust blower 10c is the first voltage or the second voltage. When the motor drive control unit 13 of the exhaust blower 10c determines that the first voltage has been input to the motor drive control unit 13, it determines that the first device 40a has been activated. When the motor drive control unit 13 of the exhaust blower 10c determines that the second voltage has been input to the motor drive control unit 13, it determines that the second device 40b has been activated.

[0118] When the motor drive control unit 13 of the exhaust air blower device 10c determines that the first voltage and the second voltage are input to the motor drive control unit 13, it determines that the first device 40a and the second device 40b have started. When the motor drive control unit 13 of the exhaust air blower device 10c determines that the first voltage and the second voltage are not input to the motor drive control unit 13, it determines that the first device 40a and the second device 40b are stopped.

[0119] In addition, after starting the drive of the motor 14, each motor drive control unit 13 of the supply air blower device 10b and the exhaust air blower device 10c, when all the devices 40 installed in the machine room 7 are stopped, that is, when both the first device 40a and the second device 40b are stopped, performs control to drive the motor 14 for a predetermined time and then performs control to stop the drive of the motor 14.

[0120] Therefore, when at least one device 40 is started from the state where all the devices 40 installed in the machine room 7 are stopped, the voltage is applied to the external terminals of the external input terminal blocks 12 of the supply air blower device 10b and the exhaust air blower device 10c from the power supply 30. Each external input terminal block 12 of the supply air blower device 10b and the exhaust air blower device 10c transmits the voltage applied from the power supply 30 to each motor drive control unit 13 of the supply air blower device 10b and the exhaust air blower device 10c.

[0121] Then, when a voltage is input from the external input terminal block 12, each motor drive control unit 13 of the supply air blower device 10b and the exhaust air blower device 10c performs control to start the drive of each motor 14 of the supply air blower device 10b and the exhaust air blower device 10c. That is, each motor drive control unit 13 of the supply air blower device 10b and the exhaust air blower device 10c changes the air volume of each of the supply air blower device 10b and the exhaust air blower device 10c from 0 to a predetermined air volume.

[0122] That is, when at least one of the first device 40a and the second device 40b starts up from the state where the first device 40a and the second device 40b are stopped, the driving voltage for driving the starting device 40 is applied from the power supply 30 to the external input terminals 122 and 123 which are the external terminals of the external input terminal block 12 of the air supply blower 10b and the exhaust blower 10c. When the driving voltage for driving the starting device 40 is applied from the power supply 30 to the external input terminal block 12 of the air supply blower 10b and the exhaust blower 10c, the external input terminal block 12 transmits the voltage to the motor drive control unit 13. When the voltage is transmitted from the external input terminal block 12, the motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c changes the input to the motor 14 so as to change the rotational speed of the motor 14 and thus change the air volume. Thereby, in the air supply blower 10b and the exhaust blower 10c, the input from the motor drive control unit 13 to the motor 14 is changed from 0 to a predetermined input, and the air volume of the air supply blower 10b and the exhaust blower 10c can be changed.

[0123] Unlike the toilet 1 described above, the required ventilation volume of the machinery room 7 is determined from the heat generation amount in the room. When power is applied to the device 40 installed in the machinery room 7, it generates heat when operating. The heat generation amount of the device 40 varies depending on the type of the device 40. Therefore, the air blower system 200 always ventilates the machinery room 7 with the required ventilation volume by changing the air volume of the air supply blower 10b and the exhaust blower 10c, that is, the ventilation air volume, according to the operating device 40.

[0124] Here, a method for obtaining the required ventilation volume of the machinery room 7 will be described. The required ventilation volume of the machinery room 7 is calculated by the following formula (2).

[0125] Required ventilation volume [m 3 / h] = 3600×H / {ρ×Cp×(ti - to)} ···(2) H: Heat generation amount [kW] ρ: Air density (1.2 [kg / m 3 ) Cp: Specific heat of air (1.006 [kJ / kg·K]) ti: Target indoor temperature [°C] to: Outdoor air temperature [°C] 1 [kW] = 3600 [kJ / h]

[0126] The following is an example of the required ventilation volume to maintain the indoor temperature at the target room temperature of 40°C under the conditions of the following device 40.

[0127] <Conditions of device 40> · Equipment capacity: 1000 [kVA] · Power factor on the load side: 0.95 · Transformer power loss: 3 [%] · Outdoor air temperature: 30 [°C] · Heat generation inside the transformer is all released indoors · Transformer... Oil-immersed self-cooled type

[0128] The heat generation amount of device 40 under the above conditions is calculated as follows.

[0129] Heat generation amount = Equipment capacity × Power factor × Transformer power loss = 1000 × 0.95 × 0.03 = 28.5 [kW]

[0130] The required ventilation volume to maintain the indoor temperature at the target room temperature of 40°C under the conditions of the above device 40 is calculated as follows.

[0131] Required ventilation volume = (3600 × 28.5) / {1.2 × 1.006 × (40 - 30)} = 8500 [m 3 / h]

[0132] Here, a specific example of the required ventilation volume of the machine room 7 will be described. The example shown below is an example of a combination of the conditions of the machine room 7 and the operating conditions of the supply air blower 10b and the exhaust air blower 10c which are the air supply blowers 10 of the air supply device 10.

[0133] <Conditions of machine room 7> · Heat generation amount of the first device 40a: 10 [kW] · Heat generation amount of the second device 40b: 5 [kW] · Required room temperature: 40 [°C] · Outside air temperature (supply air temperature): 30 [°C] <Operating conditions of the air blower 10> · Ventilation air volume during operation of the first device 40a: 2982 [m 3 / h] · Ventilation air volume during operation of the second device 40b: 1491 [m 3 / h] · During operation of both the first device 40a and the second device 40b: 4473 [m 3 / h] · Ventilation air volume when the devices are not operating: 0 [m 3 / h]

[0134] Figure 7 is a diagram showing an example of the relationship between the air volume of the air blower 10 and the operating state of the devices in the air blower system 200 according to Embodiment 2. Each of the motor drive control units 13 of the supply air blower 10b and the exhaust air blower 10c controls the air volume according to the conditions shown in FIG. 7, for example.

[0135] When the first device 40a and the second device 40b are in the stopped state, the air volumes of the supply air blower 10b and the exhaust air blower 10c are 0.

[0136] When the first device 40a is started and in the operating state, and the second device 40b is in the stopped state, the air volumes of the supply air blower 10b and the exhaust air blower 10c are the first air volume.

[0137] When the first device 40a is in the stopped state, and the second device 40b is started and in the operating state, the air volumes of the supply air blower 10b and the exhaust air blower 10c are the second air volume.

[0138] When the first device 40a and the second device 40b are started and in the operating state, the air volumes of the supply air blower 10b and the exhaust air blower 10c are the third air volume.

[0139] In this case, the magnitude relationship between the first air volume and the second air volume is determined by the heat generation amounts of the first device 40a and the second device 40b. Further, the third air volume is the total air volume of the first air volume and the second air volume.

[0140] Further, the first air volume corresponds to, for example, the ventilation air volume during the operation of the first device 40a: 2982 [m 3 / h] shown in the <operating conditions of the blower device 10> described above. The second air volume corresponds to, for example, the ventilation air volume during the operation of the second device 40b: 1491 [m 3 / h] shown in the <operating conditions of the blower device 10> described above. The third air volume corresponds to, for example, the ventilation air volume during the operation of both the first device 40a and the second device 40b: 4473 [m 3 / h] shown in the <operating conditions of the blower device 10> described above. The air volume in the stop mode corresponds to the ventilation air volume: 0 [m 3 / h] without device operation shown in the <operating conditions of the blower device 10> described above.

[0141] Next, the operation of the blower device system 200 according to Embodiment 2 will be described. FIG. 8 is a flowchart for explaining the operation of the blower device system 200 according to Embodiment 2.

[0142] In step S210, it is determined whether or not a voltage of the first device 40a is applied to the external input terminal block 12 of the air supply blower device 10b and the exhaust blower device 10c. Specifically, each motor drive control unit 13 of the air supply blower device 10b and the exhaust blower device 10c determines whether or not a first voltage, which is a drive voltage for driving the first device 40a, is applied to the external input terminal block 12 of each of the air supply blower device 10b and the exhaust blower device 10c.

[0143] Each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c determines whether a first voltage has been transmitted from the respective external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c to the motor drive control unit 13, thereby determining whether the voltage of the first device 40a is applied to the external input terminal block 12.

[0144] If it is determined that the voltage of the first device 40a is not applied to the external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c, then it becomes No in step S210 and proceeds to step S220. If it is determined that the voltage of the first device 40a is applied to the external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c, then it becomes Yes in step S210 and proceeds to step S250.

[0145] In step S220, it is determined whether the voltage of the second device 40b is applied to the external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c. Specifically, each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c determines whether the second voltage, which is the drive voltage for driving the second device 40b, is applied to the respective external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c.

[0146] If it is determined that the voltage of the second device 40b is not applied to the external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c, then it becomes No in step S220 and proceeds to step S230. If it is determined that the voltage of the second device 40b is applied to the external input terminal blocks 12 of the air supply blower 10b and the exhaust blower 10c, then it becomes Yes in step S220 and proceeds to step S240.

[0147] In step S230, the air supply blower 10b and the exhaust blower 10c are set to the stopped state. Specifically, each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c performs control to stop the motor 14. Then, the process returns to step S210.

[0148] In step S240, the air supply blower 10b and the exhaust blower 10c operate at a predetermined second air volume. Specifically, each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c performs control to drive each motor 14 in the operation mode of the predetermined second air volume. Then, the process returns to step S210.

[0149] In step S250, it is determined whether a voltage of the second device 40b is applied to the external input terminal block 12 of the air supply blower 10b and the exhaust blower 10c. Specifically, each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c determines whether a second voltage, which is a drive voltage for driving the second device 40b, is applied to the external input terminal block 12 of the air supply blower 10b and the exhaust blower 10c, respectively.

[0150] If it is determined that no voltage of the second device 40b is applied to the external input terminal block 12 of the air supply blower 10b and the exhaust blower 10c, then it is No in step S250 and the process proceeds to step S260. If it is determined that a voltage of the second device 40b is applied to the external input terminal block 12 of the air supply blower 10b and the exhaust blower 10c, then it is Yes in step S220 and the process proceeds to step S270.

[0151] In step S260, the air supply blower 10b and the exhaust blower 10c operate at a predetermined first air volume. Specifically, each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c performs control to drive each motor 14 in the operation mode of the predetermined first air volume. Then, the process returns to step S210.

[0152] In step S270, the air supply blower 10b and the exhaust blower 10c operate at a predetermined third air volume. Specifically, each motor drive control unit 13 of the air supply blower 10b and the exhaust blower 10c performs control to drive each motor 14 in an operation mode of a predetermined third air volume. Then, the process returns to step S210.

[0153] As described above, in the blower system 200 according to the second embodiment, the external input terminal block 12 of the air supply blower 10b and the power source 30 are electrically connected via the electric wire 323 that functions as the driving power wire of the first device 40a and the branch wire 325, thereby having a mechanism for varying the air volume of the air supply blower 10b in accordance with the startup of the first device 40a. Further, in the blower system 200, the external input terminal block 12 of the air supply blower 10b and the power source 30 are electrically connected via the electric wire 324 that functions as the driving power wire of the second device 40b and the branch wire 327, thereby having a mechanism for varying the air volume of the air supply blower 10b in accordance with the startup of the second device 40b.

[0154] Further, in the blower system 200, the external input terminal block 12 of the exhaust blower 10c and the power source 30 are electrically connected via the electric wire 323 that functions as the driving power wire of the first device 40a and the branch wire 326, thereby having a mechanism for varying the air volume of the exhaust blower 10c in accordance with the startup of the first device 40a. Further, in the blower system 200, the external input terminal block 12 of the exhaust blower 10c and the power source 30 are electrically connected via the electric wire 324 that functions as the driving power wire of the second device 40b and the branch wire 328, thereby having a mechanism for varying the air volume of the exhaust blower 10c in accordance with the startup of the second device 40b.

[0155] By having the above configuration, when at least one of the devices 40 installed in the machine room 7 starts up from a state where all the devices 40 are stopped, the air volume of the supply air blower 10b and the exhaust air blower 10c can be varied in accordance with the startup of the device 40. That is, by having the above configuration, when the first device 40a or the second device 40b starts up, the air volume of each of the supply air blower 10b and the exhaust air blower 10c can be changed from 0 to a predetermined air volume.

[0156] Thereby, when at least one of the devices 40 installed in the machine room 7 starts up from a state where all the devices 40 are stopped, the ventilation of the machine room 7 can be immediately started, and the heat of the devices 40 installed in the machine room 7 can be immediately exhausted from the machine room 7.

[0157] For example, a supply air blower and an exhaust air blower are provided in the machine room 7, a temperature sensor is arranged in the machine room 7, or a temperature sensor is provided in the blower, and the rise in the indoor temperature due to the heat generation of the devices 40 installed in the machine room 7 is detected, so that the air volume of the blower can be varied and the indoor temperature of the machine room 7 can be maintained below the upper limit temperature. In this case, a dedicated temperature sensor and a sensor information processing functional unit for processing the information output from the dedicated temperature sensor are required. However, in the case of such a configuration, since the air volume of the blower is varied based on the rise in the indoor temperature of the machine room 7 detected by the temperature sensor, the exhaust heat of the machine room 7 is not performed unless the indoor temperature of the machine room 7 becomes high.

[0158] When exhausting the heat of the machine room 7 from a state where the indoor temperature of the machine room 7 has already become high, it is necessary to lower the indoor temperature so as not to exceed the upper limit temperature of the indoor temperature. Therefore, the instantaneous ventilation air volume of the air supply blower and the exhaust blower is larger than that of the air supply blower 10b and the exhaust blower 10c according to the second embodiment that immediately exhausts heat against the heat generation of the device 40. When the air volume of the air supply blower and the exhaust blower is varied by the motor drive control unit of the air supply blower and the exhaust blower, the power consumption and the ventilation air volume are in the relationship of the following formula (3). For this reason, increasing the air volume of the air supply blower and the exhaust blower is directly linked to the deterioration of power consumption.

[0159] Power consumption ∝ ventilation air volume 3 ···(3)

[0160] On the other hand, when at least one device 40 starts up from a state where all the devices 40 installed in the machine room 7 have stopped, the blower system 200 according to the second embodiment can immediately start the ventilation of the machine room 7 and can immediately exhaust the heat of the devices 40 installed in the machine room 7 from the machine room 7. Therefore, it is not necessary to instantaneously increase the air volume of the air supply blower 10b and the exhaust blower 10c.

[0161] Therefore, the blower system 200 according to the second embodiment can perform energy-saving operation when ventilating the machine room 7 and exhausting the indoor heat of the machine room 7.

[0162] In addition, since the air supply blower 10b and the exhaust blower 10c of the blower system 200 do not include a dedicated temperature sensor and a sensor information processing function unit, the configuration and control can be simplified compared to the air supply blower and the exhaust blower including a dedicated temperature sensor and a sensor information processing function unit, and an inexpensive air supply blower 10b and an exhaust blower 10c can be obtained.

[0163] Embodiment 3. In Embodiment 3, a form will be described in which when the external contact terminal block 16 of the blower device 10 is short-circuited, the input transmitted from the motor drive control unit 13 to the motor 14 is changed and the air volume of the blower device 10 can fluctuate. The blower device system 300 according to Embodiment 3 is such that the blower device 10d, which is the blower device 10, is installed in the ceiling space of a room in a building, and the air in the room is exhausted through a duct. In Embodiment 3, a case will be described in which the blower device 10d is installed in the ceiling space 3 of Toilet 1 in a commercial building, and the air in Toilet 1 is exhausted through a duct. That is, in Embodiment 3, the blower device system 300 is in a usage form in which the blower device 10d is arranged at the position of the blower device 10a in FIG. 1.

[0164] FIG. 9 is a diagram showing the configuration of the blower device system 300 according to Embodiment 3. In FIG. 9, the electrical connections of each component are shown together with the configuration of the blower device system 300. FIG. 10 is a diagram showing an image of the connection of some components in the blower device system 300 according to Embodiment 3. In FIG. 10, an image of the connection of the first power supply 33, the contact 23, the external contact terminal block 16, the motor drive control unit 13, and the light 24 in the blower device system 300 is shown. For components having the same configuration as in Embodiment 1 in the blower device system 300, the same reference numerals as in Embodiment 1 are used, and detailed description thereof is omitted. The blower device system 300 according to Embodiment 3 includes a blower device 10d, a light 20 with a human sensor, a first power supply 33, and a second power supply 34.

[0165] The first power supply 33 is electrically connected to the light 20 with a human sensor and applies a voltage to the light 20 with a human sensor. The first power supply 33 is electrically connected to the contact 23 of the light 20 with a human sensor by an electric wire 351. Specifically, the first power supply 33 is electrically connected to the contact 23 of the light 20 with a human sensor by a positive electrode wire 3511 and a negative electrode wire 3512, which are the electric wire 351. And a branch wire 353 is provided branching from the electric wire 351. Specifically, the branch wire 353 is provided branching from the positive electrode wire 3511.

[0166] The branch wire 353 is a wire that electrically connects the positive electrode wire 3511 of the wire 351 and the external contact terminal block 16 of the blower device 10d. That is, the positive electrode wire 3511 of the wire 351 and the external contact terminal block 16 of the blower device 10d are electrically connected via the branch wire 353.

[0167] The contact 23 is electrically connected to the light 24 by the wire 352. Specifically, the contact 23 is electrically connected to the light 24 by the positive electrode wire 3521 and the negative electrode wire 3522 which are the wire 352. And a branch wire 354 is provided branching from the wire 352. Specifically, the branch wire 354 is provided branching from the positive electrode wire 3521.

[0168] The branch wire 354 is a wire that electrically connects the positive electrode wire 3521 of the wire 352 and the external contact terminal block 16 of the blower device 10d. That is, the positive electrode wire 3521 of the wire 352 and the external contact terminal block 16 of the blower device 10d are electrically connected via the branch wire 354.

[0169] The contact 23 has a positive electrode wire 231 electrically connected to the positive electrode wire 3511 of the wire 351 and the positive electrode wire 3521 of the wire 352, and a negative electrode wire 232 electrically connected to the negative electrode wire 3512 of the wire 351 and the negative electrode wire 3522 of the wire 352. A voltage application changeover switch 233 to the light 24 is provided on the positive electrode wire 231 of the contact 23.

[0170] The external contact terminal block 16 is a terminal block that electrically connects the outside of the external contact terminal block 16 and the motor drive control unit 13. The external contact terminal block 16 is electrically connected to the motor drive control unit 13 of the blower device 10d by the wire 355. Specifically, the external contact terminal block 16 is electrically connected to the motor drive control unit 13 by the first wire 3551 and the second wire 3552 which are the wire 355.

[0171] The external connection terminal block 16 is provided with external terminals that are electrically connected to the external changeover switch 233 of the blower device 10d. That is, the external connection terminal block 16 is provided with an external connection terminal 124 that is an external terminal and is electrically connected to the positive electrode wire 3511 of the wire 351 via the branch wire 353. The external connection terminal 124 is electrically connected to the first wire 3551 of the wire 355 inside the external connection terminal block 16. Further, the external connection terminal block 16 is provided with an external connection terminal 125 that is an external terminal and is electrically connected to the positive electrode wire 3521 of the wire 352 via the branch wire 354. The external connection terminal 125 is electrically connected to the second wire 3552 of the wire 355 inside the external connection terminal block 16.

[0172] The second power source 34 is electrically connected to the blower device 10d and applies a voltage to the blower device 10d. The second power source 34 is electrically connected to the power supply terminal block 11 of the blower device 10d by the wire 356.

[0173] When the external connection terminal block 16 short-circuits, the external connection terminal block 16 performs control to change the air volume of the blower device 10d. When the contact 23 is turned on, in a circuit in which a signal current flows into a drive circuit (not shown) that the motor drive control unit 13 has within the motor drive control unit 13, the resistance fluctuates, and the value of the signal current flowing into the drive circuit fluctuates.

[0174] When the contact 23 is turned on, a loop circuit is formed in which the motor drive control unit 13, the external connection terminal 124 of the external connection terminal block 16, the contact 23, the external connection terminal 125 of the external connection terminal block 16, and the motor drive control unit 13 are electrically connected in this order. When the contact 23 is turned on, the signal current flowing into the drive circuit of the motor drive control unit 13 flows through this loop circuit to the drive circuit in addition to the path through which the signal current flows when the contact 23 is off. For this reason, the resistance value related to the path through which the signal current flows fluctuates, and the value of the signal current flowing into the drive circuit fluctuates accordingly.

[0175] When the contact 23 is turned on, the external contact terminals 124 and 125 are connected in a state where there is no potential difference, and a signal current flows. In this case, when the contact 23 is turned on, the voltage of the first power supply 33 is applied to the light 24, but the voltage of the first power supply 33 is not applied to the external contact terminals 124 and 125 of the external contact terminal block 16. Therefore, the contact 23 is connected with voltage so as to function as a live voltage contact in the human presence sensor-equipped light 20, and is used without voltage so as to function as a non-live voltage contact in the blower unit 10d. As described above, when the contact 23 is turned on, the external contact terminal block 16 is connected so that the signal current of the motor drive control unit 13 flows between the external contact terminal 124 and the external contact terminal 125 via the contact 23.

[0176] In Embodiment 3, the short circuit of the external contact terminal block 16 means that the signal current of the motor drive control unit 13 flows between the external contact terminal 124 and the external contact terminal 125. Specifically, the signal current of the motor drive control unit 13 flows between the motor drive control unit 13 and the external contact terminal 124 and the external contact terminal 125 via the contact 23. Further, the short circuit of the external contact terminal block 16 can be paraphrased as follows: when the contact 23 is turned on, the resistance increases in the circuit in which the signal current of the motor drive control unit 13 flows, and the value of the signal current fluctuates.

[0177] When the external contact terminal block 16 is short-circuited, the drive circuit performs control to change the air volume of the blower unit 10d. The drive circuit controls the drive of the motor 14 based on the value of the signal current entering the drive circuit, thereby controlling the air volume of the blower unit 10d. When the drive circuit knows the value of the signal current entering the drive circuit and detects a change in the value of the signal current, the drive circuit changes the input from the drive circuit to the motor 14 and performs control to change the air volume of the blower unit 10d.

[0178] That is, the motor drive control unit 13 detects the value of the signal current in the motor drive control unit 13, and when detecting a change in the value of the signal current, changes the input from the motor drive control unit 13 to the motor 14 and performs control to change the air volume of the blower unit 10d.

[0179] In the air blower system 300, the contact 23 functions as a no-voltage contact with respect to the air blower 10d. That is, when the contact 23 is in the on state, the voltage applied from the first power source 33 to the contact 23 is transmitted to the light 24, and the light 24 lights up. Also, when the contact 23 is in the on state, the external contact terminal block 16 is short-circuited.

[0180] FIG. 11 is a diagram showing the configuration of the air blower 10 alone of the air blower system 300 according to Embodiment 3. In FIG. 11, the second power source 34 is also shown. The electric wire 161 in FIG. 11 corresponds to the branch electric wire 353, a part of the positive electrode electric wire 3511 of the electric wire 351, the positive electrode electric wire 231 of the contact 23, a part of the positive electrode electric wire 3521 of the electric wire 352, and the branch electric wire 354 in FIGS. 9 and 10. The changeover switch 162 in FIG. 11 corresponds to the changeover switch 233 in FIG. 10. FIG. 12 is a diagram showing the configuration of the light 20 with a human sensor of the air blower system 300 according to Embodiment 3. In FIG. 12, the first power source 33 is also shown.

[0181] When the changeover switch 162 of the air blower 10d shown in FIG. 11 is turned on, the external contact terminal block 16 is short-circuited, and the external contact terminal 124 and the external contact terminal 125 have the same potential. That is, when the changeover switch 162 of the air blower 10d shown in FIG. 11 is turned on, the external contact terminal 124 and the external contact terminal 125 of the external contact terminal block 16 are conducted and short-circuited via the electric wire 161 and the changeover switch 162 to have the same potential.

[0182] The air blower system 300 shown in FIG. 9 is configured by combining the air blower 10d shown in FIG. 11 and the light 20 with a human sensor shown in FIG. 12.

[0183] In the air blower system 300, in normal exhaust operation, the motor drive control unit 13 controls the drive of the motor 14 in the first operation mode. Further, when the external contact terminal block 16 is short-circuited, the motor drive control unit 13 controls the drive of the motor 14 in the second operation mode. That is, in the air blower system 300, when the external contact terminal block 16 is short-circuited, the input from the motor drive control unit 13 to the motor 14 is changed, and the air volume of the air blower 10d is changed.

[0184] In the air blower system 300, by electrically connecting the external contact terminals 124 and 125 of the external contact terminal block 16 to the changeover switch 233 of the contact 23 of the human presence sensor-equipped light 20, the external contact terminal block 16 is short-circuited in accordance with the lighting of the light 24. That is, in the air blower system 300, the external contact terminal 124 is electrically connected to the positive electrode wire 3511 of the wire 351 via the branch wire 353, and the external contact terminal 125 is electrically connected to the positive electrode wire 3521 of the wire 352 via the branch wire 354, whereby the external contact terminal block 16 is short-circuited in accordance with the lighting of the light 24.

[0185] Next, the operation of the air blower system 300 according to Embodiment 3 will be described. FIG. 13 is a flowchart for explaining the operation of the air blower system 300 according to Embodiment 3.

[0186] In step S310, it is determined whether or not the external contact terminal block 16 is short-circuited. Specifically, the motor drive control unit 13 determines whether or not the external contact terminal block 16 is short-circuited. The motor drive control unit 13 determines whether or not the external contact terminal block 16 is short-circuited by determining the variation in the value of the signal current in the motor drive control unit 13.

[0187] Whether or not the external contact terminal block 16 is short-circuited can be paraphrased as whether or not the human presence sensor-equipped light 20 is lit.

[0188] When it is determined that the terminal block 16 for external contacts is not short-circuited, it becomes No in step S310 and proceeds to step S320. When it is determined that the terminal block 16 for external contacts is short-circuited, it becomes Yes in step S310 and proceeds to step S330.

[0189] In step S320, the blower 10d operates at the first air volume, that is, in the first operation mode. Specifically, the motor drive control unit 13 outputs a voltage of the first pattern to the motor 14 to control the drive of the motor 14 in the first operation mode. Thereby, the blower 10d operates in the first operation mode. In the first operation mode, the blower 10d operates at the first air volume. Then, it returns to step S310.

[0190] In step S330, the blower 10d operates at the second air volume, that is, in the second operation mode. Specifically, the motor drive control unit 13 outputs a voltage of the second pattern to the motor 14 to control the drive of the motor 14 in the second operation mode. Thereby, the blower 10d starts operating in the second operation mode. In the second operation mode, the blower 10d operates at a second air volume that is larger than the first air volume which is the air volume of the blower 10d in the first operation mode. That is, in the second operation mode, the motor 14 is driven at a rotational speed higher than the rotational speed of the motor 14 in the first operation mode. Then, it returns to step S310.

[0191] In the above-described Embodiment 1, by electrically connecting the first power transmission unit 25, which is the power transmission unit from the contact 23 of the human sensor-equipped light 20 to the light 24, to the terminal block 12 for external input, it was possible to change the air volume of the blower 10a in accordance with the lighting of the light 24.

[0192] On the other hand, in the blower system 300 according to Embodiment 3, the external contact terminal 124 of the external contact terminal block 16 is electrically connected to the contact 23 of the light with a human sensor 20 via the branch wire 353 and the positive electrode wire 3511 of the wire 351, and the external contact terminal 125 of the external contact terminal block 16 is electrically connected to the contact 23 of the light with a human sensor 20 via the branch wire 354 and the positive electrode wire 3521 of the wire 352. By doing so, the external contact terminal block 16 is short-circuited in accordance with the lighting of the light 24. That is, in the blower system 300, the external contact terminal 124 and the external contact terminal 125 of the external contact terminal block 16 are electrically connected to the changeover switch 233, so that the external contact terminal block 16 is short-circuited in accordance with the lighting of the light 24. Then, when the external contact terminal block 16 is short-circuited, the motor drive control unit 13 changes the input from the motor drive control unit 13 to the motor 14 and changes the air volume of the blower 10d. Thereby, in the blower system 300, it is possible to change the air volume of the blower 10d in accordance with the lighting of the light 24.

[0193] In the blower system 100 according to Embodiment 1, it is necessary to match the power supply specifications of the light with a human sensor 20 and the power supply specifications of the blower 10a according to Embodiment 1.

[0194] On the other hand, in the blower system 300 according to Embodiment 3, since the blower 10d uses the contact 23 in a non-voltage manner so as to function as a non-voltage contact, it is not necessary to match the power supply specifications of the light with a human sensor 20 and the power supply specifications of the blower 10d, and the same effect as that of the blower 10a according to Embodiment 1 can be obtained. Thereby, in the blower system 300, it is possible to combine a blower 10d with any specification and a light with a human sensor 20 with any specification, and the degree of freedom of the system configuration of the blower system 300 is improved.

[0195] As described above, the blower system 300 according to Embodiment 3 can obtain the same effects as the blower 10a according to Embodiment 1 without matching the power supply specifications of the light 20 with a human presence sensor and the power supply specifications of the blower 10d, and the degree of freedom in the system configuration of the blower system 300 is improved.

[0196] Subsequently, the hardware configurations of the control units according to Embodiments 1 to 3 described above will be described. Some functions of the motor drive control unit 13 of the blower 10 and the light control unit 22 of the light 20 with a human presence sensor according to Embodiments 1 to 3 are each realized, for example, as a processing circuit having the hardware configuration shown in FIG. 14. FIG. 14 is a diagram showing an example of the hardware configuration of the processing circuit according to Embodiments 1 to 3. When some functions of the motor drive control unit 13 of the blower 10 and the light control unit 22 of the light 20 with a human presence sensor according to Embodiments 1 to 3 are each realized by the processing circuit shown in FIG. 14, some functions of the motor drive control unit 13 of the blower 10 and the light control unit 22 of the light 20 with a human presence sensor according to Embodiments 1 to 3 are each realized by the processor 401 executing a program stored in the memory 402. Further, a plurality of processors and a plurality of memories may cooperate to realize some functions of the motor drive control unit 13 of the blower 10 and the light control unit 22 of the light 20 with a human presence sensor according to Embodiments 1 to 3. Further, a part of some functions of the motor drive control unit 13 of the blower 10 and the light control unit 22 of the light 20 with a human presence sensor according to Embodiments 1 to 3 may be mounted as an electronic circuit, and the other parts may be realized using the processor 401 and the memory 402.

[0197] The configurations shown in the above embodiments are examples, and it is possible to combine them with other known techniques, it is also possible to combine the embodiments with each other, and it is also possible to omit or change a part of the configuration without departing from the gist.

Description of Reference Numerals

[0198] 1 Toilet, 2,8 Ceiling, 3 Ceiling space, 4 Exhaust port, 5 Entrance / exit, 6a,6d,6e Indoor duct, 6b,6c,6f Outdoor duct, 7 Machine room, 10,10a,10d Air blower, 10b Supply air blower, 10c Exhaust air blower, 11,41 Power supply terminal block, 12 External input terminal block, 13 Motor drive control unit, 14 Motor, 15 Fan, 16 External contact terminal block, 20 Light with human sensor, 21 Human sensor, 22 Light control unit, 23 Contact, 24 Light, 25 First power transmission unit, 26 Second power transmission unit, 30 Power supply, 40 Equipment, 40a First equipment, 40b Second equipment, 42 Drive unit, 43 Equipment control unit, 100,200,300 Air blower system, 121,122,123 External input terminal, 124,125 External contact terminal, 231 Positive electrode wire, 232 Negative electrode wire, 162,233 Changeover switch, 161,311,312,321,322,323,324,351,352,355,356 Electric wire, 325,326,327,328,353,354 Branch wire, 401 Processor, 402 Memory.

Claims

1. A blower device that changes the air volume in conjunction with the startup of an external device, comprising: a fan; a motor that rotates the fan; a motor drive control unit that controls the drive of the motor; a power supply terminal block to which a voltage for driving the motor is input from a power supply; an external input terminal to which a voltage is input during operation of the external device; and the motor drive control unit controls the air volume by changing the rotation speed of the motor based on the presence or absence of voltage input to the external input terminal. A blower device characterized by the above.

2. The blower device according to claim 1, wherein the motor drive control unit performs control to increase the rotation speed of the motor when a voltage is input from the external device to the external input terminal. The blower device according to claim 1, characterized by the above.

3. The blower device according to claim 1, wherein when a voltage is input from the external device to the external input terminal while the motor drive control unit is controlling the rotation speed of the motor at a first rotation speed, the motor drive control unit controls the motor at a second rotation speed greater than the first rotation speed. The blower device according to claim 1, characterized by the above.

4. The external device includes a human presence sensor, a light, and a contact disposed between the light and the power supply to switch the energization state from the power supply to the light, and is installed in a room where the blower device is installed. The light is a light with a human presence sensor that lights up when a person is detected by the human presence sensor. The external input terminal is electrically connected to the contact. When the contact is turned on and the light lights up, the voltage of the power supply applied to the contact is input to the external input terminal. The blower device according to claim 2 or 3, characterized by the above.

5. The external device includes a drive unit that operates with heat generation, and a power supply terminal block to which a voltage for driving the drive unit is input from a power supply, and is a device installed in a room where the blower device is installed. The external input terminal is electrically connected to a wire that inputs voltage from the power supply to the power supply terminal block of the external device. When the external device is started up, the voltage of the power supply applied to the power supply terminal block of the external device is input to the external input terminal. The blower device according to claim 2 or 3, characterized by the above.

6. A blower device that changes the air volume in conjunction with the startup of an external device, comprising: a fan; a motor that rotates the fan; a motor drive control unit that controls the drive of the motor; A power supply terminal block to which a voltage for driving the motor is input from a power supply, An external contact terminal block electrically connected to the motor drive control unit, Comprising, The motor drive control unit changes the rotational speed of the motor based on the presence or absence of a short circuit in the external contact terminal block to control the air volume, A blower device characterized by the above.

7. The external device includes a human presence sensor, a light, and a contact disposed between the light and the power supply to switch the energization state from the power supply to the light, and is installed in a room where the blower device is installed, and the light turns on when a person is detected by the human presence sensor. A light with a human presence sensor, The external contact terminal block is connected to the contact without voltage and short-circuits when the contact is turned on and the light with the human presence sensor lights up, The blower device according to claim 6, characterized by the above.

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