JP2013019564A - Blower and blower system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blower that can suppress unnecessary ventilation and achieve energy saving by performing detailed setting based on a plurality of pieces of input information.SOLUTION: The blower 1 having a motor 11 for rotating a fan arranged on a body includes: a sensor signal input terminal capable of inputting a sensor signal from a sensor 21; a control signal input terminal capable of inputting a control signal from control equipment 20; and a control part 8 for controlling the operation of the motor based on the input sensor signal and the control signal.

Description

  The present invention relates to a ventilating blower that can be externally controlled by various sensors and time switches.

  Conventionally, a time switch or the like is installed on a power supply circuit, and useless operation is suppressed by controlling operation of a ventilation fan according to a time zone. For example, the fan is operated only during working hours in an office or the like. In this example, useless operation of the blower is suppressed by stopping the blower outside the working hours, in which the worker is often absent.

  On the other hand, the operation of the blower may be controlled using information of a sensor installed to detect the state of the place where the blower ventilates. For example, as shown in Patent Document 1, based on occupant information by a human sensor, a blower is operated only when necessary to perform ventilation, and wasteful operation is suppressed.

JP 2009-264647 A

  However, according to the above conventional technique, in the operation control using the time switch, the blower is stopped regardless of the presence or absence of the person at the set time. For example, when considering toilet ventilation in an office building, the blower does not operate even when there are people using the toilet outside the set time.

  In addition, when the presence sensor is used, it is possible to control the operation based on the presence or absence of people. For example, in the same way as above, when considering toilet ventilation, if there are people, strong notch operation, within weekday working hours It was difficult to respond to the switching of driving according to the time zone, such as driving with a weak notch when there were no people, and stopping at night on weekdays and on holidays.

  Further, when considering using a time switch and a human sensor together, it is conceivable to connect the power switch in series or in parallel. However, if either setting is turned off when connected in series, the operation is stopped even in a situation where the operation of the ventilation fan is required. For example, if the setting of the time switch is stopped during toilet ventilation on a holiday, when the toilet is used for work on a holiday, etc., the human sensor is turned on but the fan is not operated because the time switch is turned off.

  Further, when the human sensor and the time switch are connected in parallel, the operation is wasted. For example, in toilet ventilation, the ventilation fan is always in operation during working hours on weekdays, and unnecessary ventilation occurs.

  The present invention has been made in view of the above, and performs a detailed operation setting based on a plurality of input information, thereby obtaining a blower capable of suppressing unnecessary ventilation and saving energy. For the purpose.

  In order to solve the above-described problems and achieve the object, the present invention is a blower including an electric motor that rotates a fan provided in a main body, and a sensor signal input terminal capable of inputting a sensor signal from a sensor; And a control signal input terminal capable of inputting a control signal from a control device, and a control unit for controlling the operation of the electric motor based on the input sensor signal and control signal.

  According to the present invention, by controlling the operation of the electric motor based on a plurality of information of the sensor signal and the control signal, unnecessary ventilation can be suppressed and energy saving can be achieved.

FIG. 1 is a block diagram illustrating a schematic configuration of a blower control system according to the first embodiment of the present invention. FIGS. 2-1 is a top view which shows schematic structure of the air blower concerning Embodiment 1 of this invention. FIGS. FIG. 2-2 is a side view illustrating a schematic configuration of the blower according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. FIG. 4A is a system diagram illustrating the blower and sensors connected thereto. FIG. 4-2 is a system diagram illustrating a blower and sensors connected to the blower according to the first modification of the first embodiment. FIG. 5 is a diagram illustrating the relationship between the input state from the sensors and the operating state of the blower. FIG. 6 is a system diagram of a blower and devices connected to the blower according to the second modification of the first embodiment.

  Below, the air blower and air blower system concerning embodiment of this invention are demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a block diagram illustrating a schematic configuration of a blower control system according to the first embodiment of the present invention. The control device 2 includes a power supply terminal 3, a power supply circuit 4, a sensor signal input terminal 5, a control signal input terminal 6, a control signal output terminal 7, a microcomputer (control unit) 8, a motor control circuit 9, a switching semiconductor 10, and a memory. The unit 23 is provided. These may all be mounted on one circuit printed board, or may be separately mounted on a plurality of circuit printed boards.

  A commercial AC power supply is connected to the power supply terminal 3. The power supply circuit 4 converts the power received at the power supply terminal 3 into specifications necessary for the operation of the blower 1. A sensor installed outside the blower 1 is connected to the sensor signal input terminal 5 in order to detect the state of the place where the blower 1 performs ventilation, and a signal from the sensor is input.

  The control signal input terminal 6 is connected to a control device provided outside the blower 1 in order to perform operation control such as a timer or a central control device in accordance with a time zone, or a signal line from another fan provided therewith. The control signal input terminal 6 receives an input of a control signal related to control output from the control device or another blower.

  The control signal output terminal 7 is a terminal that outputs part or all of the control signal input from the control signal input terminal 6 to the outside of the blower 1. The microcomputer 8 has a motor control circuit 9 based on a sensor signal from the sensor signal input terminal 5, a control signal from the control signal input terminal 6, and a setting state of a setting switch (not shown) provided separately such as a remote controller. The motor 11 is controlled through the switching semiconductor 10 and a control signal is output to the control signal output terminal 7. The output of the switching semiconductor 10 is connected to the electric motor 11 for rotating the blades of the blower 1 connected by lead wires from the circuit printed board.

  The power supply circuit 4 receives a single-phase 100 V, 200 V, or three-phase 200 V commercial AC power supply and converts it into a DC power supply 140 V for driving the motor and a DC 12 V and 5 V required for operating the microcomputer 8.

  The sensor signal input terminal 5 for connecting a sensor for detecting the state of the installation site is an input by a non-voltage a contact, and it is determined that an input has been made by short-circuiting the two terminals. Therefore, a human sensor that closes the contact when a person is detected, a temperature switch that opens and closes the contact depending on the room temperature, a humidity switch that opens and closes based on the room humidity, and the like can be connected. The sensor signal input terminal 5 is not limited to the input by the a contact but may be the input by the c contact.

  The control signal input terminal 6 for connecting a control device for collective control (for example, a time switch for performing collective control by time, a central control device of a building, etc.) is also an input by a no-voltage a contact, It is determined that an input has been made by short-circuiting the two terminals. Therefore, it is possible to connect a central controller having a specification for opening and closing the contacts, a time switch for opening and closing the contacts according to time, and the like. Note that the control signal input terminal 6 is not limited to the input by the a contact, but may be the input by the c contact.

  In addition, when a plurality of blowers 1 are used, the control signal input terminal 6 can be input with a control signal output from the control signal output terminal 7 of another blower 1 provided side by side. Connection is possible. When one blower 1 is used alone or used as the first master unit, the other blower 1 is not connected to the control signal input terminal 6.

  The control signal output terminal 7 transmits a control signal to the control signal input terminal 6 of another blower 1 connected downstream when the control signals are connected in series when a plurality of blowers 1 are used. It can be connected without polarity. When one blower 1 is used alone, or when used as a slave connected at the back of a slave when multiple units are used, no other blower 1 is connected to the control signal output terminal 7.

  The microcomputer 8 determines the operation of the electric motor 11 by judging from the input signals from the sensor signal input terminal 5, the control signal input terminal 6, and the setting state of a setting switch (not shown) provided separately such as a remote controller. An instruction to operate the motor is given to the control circuit 9. A control signal is output to the control signal output terminal 7. Thereby, a control signal is transmitted with respect to the subunit | mobile_unit (other blower 1) connected to the control signal output terminal 7. FIG. The electric motor control circuit 9 operates the switching semiconductor 10 that generates a sine wave alternating current necessary for driving the electric motor from a direct current power source based on an instruction issued from the microcomputer 8.

  Next, the overall configuration of the blower 1 will be described. FIGS. 2-1 is a top view which shows schematic structure of the air blower 1 concerning Embodiment 1 of this invention. FIGS. FIG. 2-2 is a side view illustrating a schematic configuration of the blower 1 according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG.

  As shown in FIGS. 2A and 2B, the blower 1 is configured by attaching a control device 2 to a box-shaped casing 15 and attaching a control device cover 12 so as to cover the control device 2. Duct connection flanges 13 a and 13 b for connecting a blower duct (not shown) are attached to the left and right sides of the casing 15.

  The mounting feet 14 are fixed to the casing 15 with screws and provided at four locations. By fixing the mounting foot 14 to a bolt or the like suspended from the ceiling of the building, fixing when installing the blower 1 is performed.

  As shown in FIG. 3, a side silencer 17 is installed on the side of the internal air passage of the casing 15, a center silencer 16 is installed in the center of the air passage, and a sirocco impeller connected to the motor 11 in the center. 18 is installed. As the sirocco impeller 18 rotates, the blower 1 blows air.

  Next, connection with sensors etc. in the case of operating the air blower 1 by 1 unit | set and operation | movement of the air blower 1 are demonstrated. FIG. 4A is a system diagram illustrating the blower 1 and sensors connected thereto. In addition, in order to make the connection relationship between each apparatus easy to understand, in FIG. 4A, the control device cover 12 is removed.

  The commercial power supply is connected to the power supply terminal 3 of the control device 2 of the blower 1 through the breaker 19 in the distribution board provided in the building to be installed, and power is supplied to the blower 1. Regarding the sensor for detecting the state of the ventilation place, in the present embodiment, a human sensor (sensor) 21 is provided in the ventilation place. The human sensor 21 is connected to the sensor signal input terminal 5 of the blower 1.

  The human sensor 21 inputs to the sensor signal input terminal 5 the resident information of the place where the blower 1 performs ventilation. For example, when toilet ventilation in an office building is considered, when a person enters the toilet, the human sensor 21 detects the person and closes the contact point, thereby inputting that the person has entered the control device 2. .

  For the control device for collective control, a time switch (control device) 20 is provided in the present embodiment. The time switch 20 is connected to the control signal input terminal 6. The setting of the time switch 20 is, for example, toilet ventilation in the office building where the blower 1 is installed. For example, considering work hours, Monday to Thursday is from 8:00 to 20:00, Friday is 8:00 The contact is closed during 17:30, and the contact is set to open at other times. These time settings may be changed as appropriate according to the actual usage of the building.

  FIG. 5 is a diagram illustrating the relationship between the input state from the sensors and the operating state of the blower 1. Table information shown in FIG. 5 is stored in the storage unit 23 of the control device 2 in advance. The microcomputer 8 controls the electric motor 11 so that the input state from the human sensor 21 and the time switch 20 and the operation state of the blower 1 have the relationship shown in the table information of FIG. Here, the weak operation is to operate with an air flow lower than the strong operation, and the air flow difference between the strong operation and the weak operation can be arbitrarily changed by setting with a switch (not shown), for example.

  When the sensor signal input from the human sensor 21 is off (a person is not detected) and the time switch 20 is also off, the operating state of the blower 1 is stopped (state 1). In the case of the toilet ventilation described above, the state 1 is assumed to be an unmanned state in the toilet outside a holiday or working hours.

  When the sensor signal input from the human sensor 21 is turned on (a person is detected) and the time switch 20 is turned off, the operating state of the blower 1 is a strong operation (state 2). In the case of the above-described toilet ventilation, it is assumed that state 2 is a case where a person enters the toilet and needs to be ventilated due to the use of the toilet by a holiday worker or an overtime worker who is out of work or working hours .

  When the sensor signal input from the human sensor 21 is off (the person is not detected) and the time switch 20 is turned on, the operation state of the blower 1 is weak (state 3). In the case of the toilet ventilation described above, it is assumed that the state 3 is within the working hours but is unattended in the toilet. Large amount of ventilation is not required because the toilet is unmanned, but it is assumed that there are many people on the floor, and the office room space is often exhausted from the toilet, so ensure ventilation For this reason, it is preferable to perform the weak operation, and therefore, the state 3 is set to the weak operation.

  When the sensor signal input from the human sensor 21 is turned on (a person is detected) and the time switch 20 is also turned on, the operation state of the blower 1 is a strong operation (state 4). In the case of the toilet ventilation described above, a state 4 is assumed when a person enters the toilet for working with the toilet during working hours.

  When the sensor signal input from the human sensor 21 is changed from on (person is detected) to off (person is not detected) in each of the driving states 1 to 4, as a function of the remaining operation It is also possible to change the operation of the blower 1 after continuing the operation in the state where the human sensor 21 is turned on for 1 to 10 minutes by setting a switch (not shown).

  FIG. 4-2 is a system diagram illustrating a blower and sensors connected to the blower according to the first modification of the first embodiment. Note that, similarly to FIG. 4-1, this figure is also shown with the control device cover 12 removed in order to make it easy to understand the connection relationship between the devices.

  In the first modification, a case where a plurality of blowers 1 are installed in an office building having a plurality of floors and control is performed using communication between the blowers 1 will be described as an example. Commercial power is connected and supplied to the power terminal 3 of the control device 2 of each blower 1 installed on each floor through breakers 19 and 19b installed in the distribution boards on each floor. A plurality of blowers 1 may be installed on the same floor.

  A control signal output terminal 7 of the first blower 1 (hereinafter referred to as “blower 1a”) serving as the master unit and a control signal input terminal 6 of the second blower 1 (hereinafter referred to as “blower 1b”) serving as the slave unit. Connecting. Similarly, the control signal output terminal 7 of the blower 1b serving as the second slave unit is connected to the control signal input terminal 6 of the blower 1 serving as the third slave unit (hereinafter also referred to as the blower 1c).

  As for the sensor for detecting the state of the ventilation place, the case where the human sensors 21 and 21b are connected will be described as an example as in the case shown in FIG. As shown in FIG. 4B, a human sensor 21 is connected to the blower 1a, and a human sensor 21b is connected to the blower 1b. That is, the human sensor is installed so as to have a one-to-one relationship with the blower installed on each floor. The human sensors 21 and 21 b are connected to the sensor signal input terminal 5, and presence information of a place where the blower 1 performs ventilation is input to the sensor signal input terminal 5. For example, in the case of toilet ventilation on the first floor of an office building, when a person enters the first floor toilet, the human sensor 21 detects the person and closes the contact, so that the person has entered the control device 2 Enter.

  The control device for collective control will be described by taking as an example a case where a time switch is connected, as in the case shown in FIG. The time switch 20 is connected only to the control signal input terminal 6 of the first blower 1a serving as the master unit, and is not connected to the control signal input terminal 6 of the blowers 1b and 1c serving as the slave units. The input state of the time switch 20 is transmitted to the slave unit through the control signal output terminal 7.

  The setting of the time switch 20 is set in the same way as described above when considering toilet ventilation in an office building. For example, in consideration of working hours, Monday to Thursday of weekdays is 8: 00 to 20: 00, and Friday is 8: 00 to 00: 00 The contact is closed during 17:30, and the contact is set to open at other times. These time settings may be changed as appropriate according to the actual usage of the building.

  Thus, when the air blower system which connects several air blowers 1 is constructed | assembled, about the state (for example, manned state) of the place (for example, toilet) where each air blower 1 ventilates, each air blower 1 is set. Information is obtained from connected sensors (for example, human sensors 21 and 21b). Information from a control device (for example, the time switch 20) for collective control is transmitted from the parent device to a child device connected downstream.

  Then, in each of the blowers 1 (1a to 1c), the microcomputer 8 so that the input states from the human sensors 21 and 21b and the time switch 20 and the operating state of the blower 1 have the relationship shown in FIG. Controls the electric motor 11.

  As described above, according to the blower 1 and the blower system according to the present embodiment and the modification 1 thereof, when a plurality of blowers 1 are used, it is not necessary to prepare a plurality of time switches. Thereby, cost can be suppressed.

  Moreover, the time setting change of the several air blower 1 can be performed simultaneously by one time switch setting change. Thereby, the effort which changes the time setting of the several air blower 1 can be reduced.

  Moreover, since the operation state of the blower 1 is switched by combining the input information, fine ventilation control is possible, and comfort is improved. For example, when considering ventilation of a toilet, it becomes possible to always ensure ventilation with a small air volume during times of high usage, and comfort is improved. Also, in office buildings, the ventilation of the entire office, including the living room space, is often considered by exhausting from the toilet. However, when ventilation is turned on / off using only human sensors, ventilation stops when there are no people in the toilet. In some cases, however, the ventilation of the entire office is stagnant. However, according to the present invention, the problem can be solved.

  In addition, it is possible to save energy by reducing blower operation power consumption and air conditioning load. When considering the ventilation of a toilet or hot water supply room, the required ventilation volume when in use and when not in use is very different, so if ventilation is always performed with the ventilation volume during use, useless ventilation occurs. For this reason, it is possible to reduce the fan operating power consumption by switching the ventilation amount as necessary. In addition, since air conditioned by ventilation is discharged to the outside, the air conditioning load is reduced by suppressing the ventilation amount.

  Generally, the capacity of the ON / OFF contact mounted on the human sensor or the time switch is smaller than the capacity required for controlling the blower 1, and it is necessary to prepare an electromagnetic contactor or the like separately. Since only a weak current flows through the contact point, the contact capacity is unlikely to be a problem. Also, the input method to the sensor signal input terminal 5 is a non-voltage a contact method that is often used for human sensors, time switches, temperature switches, humidity switches, and the like, and is highly versatile.

  FIG. 6 is a system diagram of a blower and devices connected to the blower according to the second modification of the first embodiment. In FIG. 6, the control device cover 12 is shown in a removed state for easy understanding of the connection relationship between the devices.

  In the second modification, a temperature sensor (sensor) 22 is a sensor that is connected to the sensor signal input terminal 5 and detects the state of the ventilation place. The temperature sensor 22 closes the contact when the temperature becomes higher than a set temperature, and operates according to the room temperature of the ventilation place.

  For example, when considering a warehouse or a machine room attached to an office building, the temperature sensor 22 closes the contact point when the temperature in the warehouse exceeds the set temperature, so that the room temperature reaches the set value in the control device 2. Is entered.

  The devices for collective control are time switches similar to those described above, and the settings are also made in consideration of working hours, for example, from Monday to Thursday on weekdays from 8:00 to 20:00, and from 8:00 to 17 on Fridays. : Set the contact to close during 30 and open the contact at other times. These time settings may be changed as appropriate according to the actual usage of the building.

  The microcomputer 8 controls the electric motor 11 so that the input state from the temperature sensor 22 and the time switch 20 and the operation state of the blower 1 have the relationship shown in FIG. Here, the weak operation is to operate with an air flow lower than the strong operation, and the difference in the air flow between the strong operation and the weak operation can be arbitrarily changed by setting a switch.

  When the sensor signal input from the temperature sensor 22 is off (below the set temperature) and the time switch 20 is also off, the operating state of the blower 1 is stopped (state 1). Considering the above-described example of ventilation in the warehouse, it is assumed as state 1 that the room temperature in the warehouse is equal to or lower than the set temperature during holidays or working hours.

  When the sensor signal from the temperature sensor 22 is turned on (set temperature or higher than the set temperature) and the time switch 20 is turned off, the operation state of the blower 1 is a strong operation (state 2). Considering the example of ventilation in the warehouse described above, it is assumed that state 2 is when the room temperature in the warehouse is higher than the set temperature or the set temperature and ventilation is required, although it is a holiday or outside working hours. .

  When the sensor signal input from the temperature sensor 22 is off (below the set temperature) and the time switch 20 is on, the operation state of the blower 1 is weak (state 3). Considering the above-described example of ventilation in the warehouse, it is assumed as state 3 that the room temperature in the warehouse is equal to or lower than the set temperature during working hours. Although the room temperature is below the set temperature, especially in warehouses that are frequently used, stagnation of air is often anxious when entering the room, and a minimum notch is ensured by a weak notch during working hours. In this way, comfort can be maintained.

  When the sensor signal input from the temperature sensor 22 is turned on (set temperature or set temperature or higher) and the time switch 20 is also turned on, the operating state of the blower 1 is a strong operation (state 4). Considering the above-described example of ventilation in the warehouse, it is assumed as state 4 that the room temperature in the warehouse exceeds the set temperature or the set temperature or more and ventilation is necessary during working hours.

  When the temperature sensor 22 changes from on (set temperature or above set temperature) to off (below set temperature) in each operation state, the operation in the state where the temperature sensor 22 is on as a function of the remaining operation is 1-10. It is also possible to change the operation of the blower 1 after continuing for a minute by setting with a switch.

Also, although an example of using the temperature sensor 22 in the second variation, sensors used is not limited thereto, a humidity sensor for opening and closing the contact by the set humidity, the opening and closing of the contacts by the CO ₂ concentration CO ₂ concentration sensor to perform, miscellaneous gas sensor to open and close the contact by the concentration of cigarette smoke and organic gas, odor sensor to open and close the contact by the degree of smell, dust sensor to open and close the contact by dust amount, etc. Can be used. That is, any type of sensor that opens and closes a contact point with respect to a threshold value can be used as a sensor that detects a state.

  As mentioned above, the air blower concerning this invention is useful for the air blower which switches an operation state according to the state and time of the room used as ventilation object.

1, 1a, 1b, 1c Blower 2 Control device 3 Power supply terminal 4 Power supply circuit 5 Sensor signal input terminal 6 Control signal input terminal 7 Control signal output terminal 8 Microcomputer (control unit)
DESCRIPTION OF SYMBOLS 9 Motor control circuit 10 Switching semiconductor 11 Motor 12 Control device cover 13a, 13b Duct connection flange 14 Mounting foot 15 Casing 16 Center part silencer 17 Side silencer 18 Sirocco impeller 19, 19b Breaker 20 Time switch (control device)
21, 21b Human sensor (sensor)
22 Temperature sensor (sensor)
23 Memory unit

Claims (8)

A blower provided with an electric motor for rotating a fan provided in the main body,
A sensor signal input terminal capable of inputting a sensor signal from the sensor;
A control signal input terminal capable of inputting a control signal from a control device;
A blower comprising: a control unit that controls operation of the electric motor based on the input sensor signal and the control signal.   The blower according to claim 1, further comprising a control signal output terminal that outputs the control signal input from the control signal input terminal to the outside. A storage unit that stores in advance a table in which the state of the sensor signal and the control signal and the operation state of the electric motor are associated;
The blower according to claim 1, wherein the control unit controls the operation of the electric motor with reference to the table. The sensor signal input terminal and the control signal input terminal are terminals corresponding to contact a or contact c,
In the table,
When the sensor signal is OFF and the control signal is OFF, the motor stops,
When the sensor signal is ON and the control signal is OFF, the motor operates with a strong notch,
When the sensor signal is OFF and the control signal is ON, the motor operates with a weak notch that is slower than the strong notch,
When the sensor signal is ON and the control signal is ON, the state of the sensor signal and the control signal is associated with the operation state of the motor so that the motor operates with the strong notch. The blower according to any one of claims 1 to 3. A blower according to claim 4;
A human contact sensor connected to the sensor signal input terminal and turned on when the presence of a person is detected;
A blower system comprising: a time switch connected to the control signal input terminal and having an a-contact or c-contact output that is turned on at a predetermined time. A blower according to claim 4;
A sensor connected to the sensor signal input terminal for detecting a predetermined temperature and turning on or off;
A blower system comprising: a time switch connected to the control signal input terminal and having an a-contact or c-contact output that is turned on at a predetermined time. A humidity sensor connected to the sensor signal input terminal, which detects a predetermined humidity and turns ON or OFF;
A blower system comprising: a time switch connected to the control signal input terminal and having an a-contact or c-contact output that is turned on at a predetermined time. A contact point or c contact point output CO ₂ sensor connected to the sensor signal input terminal and detecting ON or OFF by detecting a predetermined CO ₂ concentration;
A blower system comprising: a time switch connected to the control signal input terminal and having an a-contact or c-contact output that is turned on at a predetermined time.

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