JP2009041834A - Ventilation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect air pressure by a differential pressure sensor when wind to the opposite direction enters from an exhaust port of a ventilation device. <P>SOLUTION: A body 1 is provided with a suction port 2 for sucking indoor air and the exhaust port 3 for exhausting the air to the outside. A fan 4 for exhausting the air is provided inside the body 1. A fan motor 5 for driving the fan is connected to the fan 4. The exhaust port 3 is provided with a differential pressure sensor 6 capable of measuring positive pressure, negative pressure, and wind pressure. The fan motor 5 and the differential pressure sensor 6 are controlled by a control means 7. An air-flowing direction in the exhaust port 3 and wind pressure can be detected by the differential pressure sensor 6. When strong outside wind enters the exhaust port 3, the ventilation device can stop the fan motor 5 and make a shutter 11 in a closed status. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ventilation fan that ventilates a room.

  Conventionally, this type of ventilation device uses a differential pressure sensor to adjust the damper opening so as to achieve a set air volume (see, for example, Patent Document 1).

Hereinafter, the ventilation apparatus will be described with reference to FIG. A ventilator was constructed that detects the differential pressure between the wind tunnel and the wind tunnel with a differential pressure sensor and adjusts the damper opening so as to achieve the set air volume. The differential pressure sensor only needs to be able to detect either positive pressure or negative pressure because the direction of air flow is a constant direction.
JP 2001-65937 A

  However, in such a ventilator, there is a problem that the differential pressure sensor cannot detect the pressure of the air when the reverse wind flows from the exhaust port.

  The present invention solves the above-described problems, and provides a ventilator that is provided with a differential pressure sensor that can detect both positive pressure and negative pressure at an exhaust port, and that can detect the air flow direction and wind pressure at the exhaust port. The purpose is to do.

  Moreover, in the conventional ventilator, when strong external winds, such as a typhoon, penetrate | invade into an exhaust port, it is requested | required that an external wind may enter into the inside of a ventilator main body.

  The present invention solves such a conventional problem, and provides a ventilator capable of stopping a fan motor and closing a shutter when strong outside wind enters an exhaust port. It is aimed.

  Further, the conventional ventilator is required to stably detect the detection value of the differential pressure sensor, operate and stop the fan motor without causing malfunction, and further open and close the shutter.

  The present invention solves such a conventional problem. When the detected value of the differential pressure sensor is within a predetermined value, the fan motor is operated and stopped, and the shutter is opened or closed. It aims to provide a ventilator that can be used.

  Further, in the conventional ventilation device, when the operation is stopped due to the outside wind or the like, it is required to automatically start the operation.

  An object of the present invention is to solve such a conventional problem and to provide a ventilator capable of automatically resuming operation after a predetermined time has elapsed after stopping.

  Moreover, in the conventional ventilation apparatus, it was requested | required that an external wind might not penetrate | invade indoors.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a ventilation device in which a shutter is provided at an indoor suction port so that outside air does not enter.

  Moreover, in the conventional ventilator, it was requested | required that the air volume of several inlets may be made the same.

  This invention solves such a conventional subject, and provides the ventilation apparatus which can adjust the opening degree of the shutter provided in the several suction inlet, and can make the air volume from a suction inlet the same. The purpose is that.

  Further, in the conventional ventilator, it has been required to ventilate the room by opening or closing the shutter in conjunction with the operation and stop of the ventilator and the natural inlet with the shutter.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a ventilator capable of ventilating when the ventilator is operated and the shutter is opened in conjunction with the natural inlet with the shutter. It is said.

  In order to achieve the above object, the ventilator of the present invention is provided with a differential pressure sensor capable of detecting both positive pressure and negative pressure at the exhaust port.

  By this means, the air flow direction and the wind pressure at the exhaust port can be detected.

  Further, according to the present invention, when a strong outside wind such as a typhoon enters the exhaust port, the fan motor is stopped and the shutter is closed.

  By this means, a ventilator capable of preventing damage to the fan motor due to reverse rotation of the fan motor by external wind and rusting of the main body due to rainwater intrusion can be obtained.

  Further, the present invention controls the fan motor and the shutter when the detected value of the differential pressure sensor is within a predetermined value.

  By this means, it is possible to obtain a ventilator that can prevent malfunction due to the influence of a sudden change in the differential pressure sensor.

  Further, according to the present invention, when the operation is stopped due to outside wind or the like, the operation is automatically started from the stop after a predetermined time.

  By this means, it is possible to obtain a ventilator that can ventilate the room without stopping the ventilator even if the influence of the outside wind is eliminated.

  In addition, the present invention provides a shutter at an indoor suction port to prevent outside air from entering.

  By this means, it is possible to obtain a ventilator that can prevent outside air from entering the room through the air inlet.

  Further, the present invention automatically adjusts the opening degree of the shutter provided at the plurality of suction ports.

  By this means, a ventilator that can make the air volume of the plurality of suction ports the same is obtained.

  In the present invention, the operation and stop of the ventilator are linked with the natural intake port with the shutter.

  By this means, it is possible to obtain a ventilator that can automatically open and close the shutter of the natural intake port without forgetting the opening and closing operation of the natural intake port.

  ADVANTAGE OF THE INVENTION According to this invention, the ventilation apparatus which can detect the flow direction and wind pressure of the air of an exhaust port can be provided.

  Moreover, according to this invention, the ventilation apparatus which can prevent the damage of the main body by the damage of the fan motor by external wind, or rainwater invasion can be provided.

  In addition, according to the present invention, it is possible to provide a ventilator that can prevent malfunction due to the influence of a rapid fluctuation of the differential pressure sensor.

  Further, according to the present invention, it is possible to provide a ventilator that does not continue to stop even if there is no influence from the outside wind.

  Moreover, according to this invention, the ventilation apparatus which can prevent that an external wind penetrate | invades into a room | chamber interior from an indoor suction inlet can be provided.

  Moreover, according to this invention, the ventilation apparatus which can make the air volume of several suction inlets the same can be provided.

  Moreover, according to this invention, the ventilator which can open and close the shutter of a natural inlet automatically can be provided.

  According to the first aspect of the present invention, a fan motor that exhausts indoor air and a differential pressure sensor that can detect a positive pressure and a negative pressure at an exhaust port in order to detect the pressure of the exhausted air are provided. The air flow direction and the wind pressure at the exhaust port can be detected.

  Also, the fan motor that discharges indoor air, the differential pressure sensor that can detect positive pressure and negative pressure at the exhaust port to detect the pressure of the exhaust air, and exhaust to block outdoor air from the outside With a shutter at the mouth, the fan motor is operated or stopped by a change in the pressure value detected by the differential pressure sensor due to the external wind from the outside, and the shutter is opened or closed. It has the effect of preventing rusting of the main body due to motor breakage or rainwater intrusion.

  Further, in the ventilator, when the detected value of the differential pressure sensor is within a predetermined value, the fan motor is operated or stopped, and the shutter is opened or closed. Has the effect of preventing malfunction.

  In the ventilator, the fan motor is stopped by the detection value of the differential pressure sensor, and when the shutter is closed, the operation is resumed at a predetermined time. Has no effect.

  In addition, a shutter is provided at the suction port so that the outside air is not blown into the room side, and has an action of preventing the outside air from entering the room through the indoor suction port.

  In addition, shutters are provided at the plurality of air intakes on the indoor side, and only when the initial power is turned on, the shutters are sequentially opened or closed so that the pressure values detected by the differential pressure sensors are the same. It adjusts the opening of the shutter, and has the effect of preventing outside air from entering the room through the air inlet.

  In addition, a natural air intake with a shutter is provided in the room, and when the ventilator is operated or stopped, it is linked with the ventilator to open or close the shutter, and the natural air intake shutter is automatically opened or closed Has the effect of

(Embodiment 1)
As shown in FIGS. 1 and 2, the main body 1 is provided with a suction port 2 for sucking indoor air and an exhaust port 3 for discharging air to the outside, and a fan 4 for discharging air inside the main body 1. The fan 4 is connected to a fan motor 5 for driving the fan, and the exhaust port 3 is provided with a differential pressure sensor 6 capable of measuring positive pressure, negative pressure and wind pressure, and the fan motor 5 The differential pressure sensor 6 is controlled by a control means 7.

  In the above configuration, when the fan motor 5 is stopped and outside wind does not enter from the exhaust port 3, the output from the differential pressure sensor 6 outputs a stop voltage 8, and when the fan motor 5 operates, The positive pressure voltage 9 is output from the pressure sensor 6, the fan motor 5 is stopped, and the negative pressure voltage 10 is output from the differential pressure sensor 6 when outside wind enters the exhaust port 3 from the outside. become.

  For example, the stop voltage 8 is set to output a voltage of about 2 to 3 V from the differential pressure sensor 6.

  For example, the positive pressure voltage 9 is output from the differential pressure sensor 6 as a voltage of about 3 to 5 V.

  For example, the negative pressure voltage 10 is output from the differential pressure sensor 6 as a voltage of about 0 to 3V.

  Although the differential pressure sensor 6 has been described as a sensor that can detect both positive pressure and negative pressure, a sensor that can detect only positive pressure or negative pressure is used, and the positive pressure and the negative pressure are switched by a tube or the like. The same effect can be obtained.

(Embodiment 2)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 3 shows that the main body 1 is provided with a suction port 2 for sucking indoor air and an exhaust port 3 for discharging air to the outside, and a fan 4 for discharging air is provided inside the main body 1. A fan motor 5 for driving the fan is connected to the fan 4, and a differential pressure sensor 6 capable of measuring positive pressure, negative pressure, and wind pressure is provided at the exhaust port 3, and the fan motor 5 and the differential pressure are measured. The sensor 6 is controlled by a control means 7, and a shutter 11 is provided inside the exhaust port 3, and the shutter 11 opens and closes the exhaust port 3 by a shutter drive motor 12 provided outside the exhaust port 3. The shutter drive motor 12 is controlled by the control means 7.

  In the above configuration, when an operation signal (not shown) is received by the main body 1, a strong external wind such as a typhoon that operates the fan motor 5 and opens the shutter 11 to the exhaust port 3. When entering, the differential pressure sensor 6 outputs the negative pressure voltage 10, and when the control means 7 receives the signal, the control means 7 stops the fan motor 5 and closes the shutter drive motor 12. A signal indicating the state is transmitted, and the shutter 11 is closed.

  The shutter 11 may have a simple structure that simply opens and closes the air path of the exhaust port 3.

  The shutter drive motor 12 includes, for example, a stepping motor, a gear motor, and a solenoid.

  The control means 7 is a board on which a microcomputer, a transistor, a relay and the like are mounted.

(Embodiment 3)
The same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the positive voltage 9 and the stop voltage 8 and the negative voltage 10 which are the outputs of the differential pressure sensor 6 are not stable DC voltages, but are influenced by outside winds and opening / closing of indoor doors. The output of the differential pressure sensor 6 fluctuates due to the influence and the influence of the opening / closing state of the window.

  According to the above situation, the positive voltage 9 is provided with a positive voltage upper limit voltage 13 and a positive voltage lower limit voltage 14, and if it is within the voltage range, it is determined that positive pressure is generated, and the stop voltage 8 is stopped. A voltage upper limit voltage 15 and a stop voltage lower limit voltage 16 are provided, and if it is within the voltage range, it is determined that the operation is stopped, and a negative voltage upper limit voltage 17 and a negative voltage lower limit voltage 18 are provided for the negative voltage 10 in the previous period, If it is within the voltage range, it can be determined that negative pressure is generated, the fan motor 5 can be operated and stopped, and the shutter 11 can be opened or closed.

  The difference between the positive voltage upper limit voltage 13 and the positive voltage lower limit voltage 14 is about 0.5V.

  The difference between the stop voltage upper limit voltage 15 and the stop voltage lower limit voltage 16 is about 0.5V.

  The difference between the negative voltage upper limit voltage 17 and the negative voltage lower limit voltage 18 is about 0.5V.

(Embodiment 4)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, the exhaust port 3 for discharging indoor air to the outdoors by the fan motor 5 is provided, and the differential pressure sensor 6 capable of measuring positive pressure, negative pressure and wind pressure is provided in the exhaust port 3. The fan motor 5 and the differential pressure sensor 6 are controlled by a control means 7, and when the fan motor 5 is in operation, the positive pressure voltage 9 is output from the differential pressure sensor 6, and a typhoon or the like. When a strong outside wind enters the exhaust port 3, the differential pressure sensor 6 outputs the negative pressure voltage 10, and when the fan motor 5 stops, the differential pressure sensor 6 outputs the stop voltage 8. The fan motor 5 and the differential pressure sensor 6 are controlled by a control means 7.

  In the above configuration, when a strong external wind such as a typhoon enters the exhaust port 3 during the operation period 19 of the fan motor 5, the differential pressure sensor 6 outputs the negative pressure voltage 10 and the control means 7 is predetermined. When the voltage is received, the control means 7 stops the fan motor 5 for a predetermined stop period 21 and, after a predetermined time, starts re-handling in the re-operation period 22, It is possible to ventilate the room without stopping the ventilation device.

  Note that the fan motor 5 is stopped when the negative pressure detection period 20 continues for one minute as an example.

  In the stop period 21, as an example, after about 1 hour has elapsed, the fan motor 5 is operated again, and when the negative voltage 10 is detected again, the fan motor 5 is repeatedly stopped.

(Embodiment 5)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 6 shows that the main body 1 is provided with the suction port 2 for sucking indoor air and the exhaust port 3 for discharging air outdoors, and the fan 4 for discharging air is provided inside the main body 1. The fan motor 5 for driving the fan is connected to the fan 4, and the differential pressure sensor 6 capable of measuring positive pressure, negative pressure and wind pressure is provided at the exhaust port 3, and the fan motor is provided. 5 and the differential pressure sensor 6 are controlled by the control means 7, and a suction shutter 23 is provided inside the suction port 2, and the suction shutter 23 is driven by a suction shutter drive motor 24 provided outside the suction port 2. The suction shutter drive motor 24 is controlled by the control means 7 by opening or closing the suction port 2.

  In the above-described configuration, when the operation signal (not shown) is received by the main body 1, the fan motor 5 is operated and the suction shutter 23 is opened, and a strong outside wind such as a typhoon is generated in the exhaust port 3. If the control means 7 receives the signal, the control means 7 stops the fan motor 5 and the suction shutter drive motor 24. A closed signal is transmitted to the suction shutter 23, and the suction shutter 23 is closed.

  The suction shutter 23 may have a simple structure that simply opens and closes the air passage of the suction port.

  Examples of the suction shutter drive motor 24 include a stepping motor, a gear motor, and a solenoid.

  The control means 7 is a board on which a microcomputer, a transistor, a relay and the like are mounted.

(Embodiment 6)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 7 shows that the main body 1 is provided with the suction port 2 and the suction port A2a for sucking indoor air, and the exhaust port 3 for exhausting air to the outside. The fan 4 is provided. The fan 4 is connected to the fan motor 5 for driving the fan. The exhaust port 3 is provided with the differential pressure sensor 6 capable of measuring positive pressure, negative pressure, and wind pressure. The fan motor 5 and the differential pressure sensor 6 are controlled by the control means 7, and a suction shutter 23 and a suction shutter A23a are provided inside the suction port 2 and the suction port A2a, and the suction shutter 23 and the suction shutter A23a are provided. Are a suction shutter drive motor 24 and a suction shutter drive mode provided outside the suction port 2 and the suction port A2a. The suction shutter drive motor 24 and the suction shutter drive motor A24a performs opening and closing operations of the intake port 2 and the inlet A2a is controlled by the control unit 7 by A24a.

  In the above configuration, when the initial power is turned on, the control means 7 drives the suction shutter drive motor A24a to close the suction shutter A23a in order to close the suction shutter A23a of the suction port A2a. Further, in order to open the suction shutter 23 of one of the suction ports 2, the suction shutter drive motor 24 is driven to open the suction shutter 23, and the control means 7 operates the fan motor 5 to The positive pressure voltage 9 of the differential pressure sensor 6 is detected and stored as data A (not shown) in the control means 7. Next, the control means 7 is configured to store the suction shutter 23 of the suction port 2. Is closed, the suction shutter drive motor 24 is driven to close the suction shutter 23. Further, in order to open the suction shutter A23a of one of the suction ports A2a, the suction shutter drive motor A24a is driven to open the suction shutter A23a, and the control means 7 The positive voltage 9 is detected and stored in the control means 7 as data B (not shown), the suction shutter 23 and the suction shutter A 23a are fully opened, and the data A and the data B are compared to determine the value. The suction shutter 23 or the suction shutter A 23a that has been in an open state with a large amount of data is closed by 10 ° to reduce the air volume.

  In addition, although the opening degree of the suction shutter 23 or the suction shutter A23a was 10 degrees as an example, it changes with duct diameters or air volume.

  The control means 7 is a board on which a microcomputer, RAM, EEPROM, etc. are mounted.

(Embodiment 7)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 8, a suction grill 25 is provided in the room, connected to the suction port 2 of the main body 1 by a suction duct 26, indoor air is sucked into the main body 1, and the sucked air is The exhaust port 3 provided in 1 is connected to a bend cap 27 provided outside and an exhaust duct 28 to be exhausted to the outside. The outdoor air is supplied by a natural intake port 29, and the natural intake port 29 has the control A natural inlet shutter 30 that can be opened and closed by a signal from the means 7 is provided.

  In the above configuration, when the main body 1 starts operation, an opening signal (not shown) is transmitted from the control means 7 to the natural intake port 29, the natural intake port shutter 30 is opened, and the main body 1 is opened. When the operation is stopped, a closing signal (not shown) is transmitted from the control means 7 to the natural intake port 29, and the natural intake port shutter 30 is closed.

  A differential pressure sensor capable of detecting positive pressure and negative pressure is provided in the ventilator, and the present invention can be applied to a ventilator capable of detecting the air flow direction and the wind pressure at the exhaust port.

Configuration diagram of Embodiment 1 of the present invention Same voltage diagram Configuration diagram of Embodiment 2 of the present invention Voltage diagram of Embodiment 3 of the present invention Voltage time diagram of Embodiment 4 of the present invention Configuration diagram of Embodiment 5 of the present invention Configuration diagram of Embodiment 6 of the present invention Configuration diagram of Embodiment 7 of the present invention Configuration diagram of conventional ventilation fan

Explanation of symbols

1 Body 2 Suction port 2a Suction port A
3 Exhaust port 4 Fan 5 Fan motor 6 Differential pressure sensor 7 Control means 8 Stop voltage 9 Positive voltage 10 Negative voltage 11 Shutter 12 Shutter drive motor 13 Positive voltage upper limit voltage 14 Positive voltage lower limit voltage 15 Stop voltage upper limit voltage 16 Stop voltage lower limit voltage 17 Negative voltage upper limit voltage 18 Negative voltage lower limit voltage 19 Operation period 20 Negative pressure detection period 21 Stop period 22 Re-operation period 23 Suction shutter 23a Suction shutter A
24 Suction shutter drive motor 24a Suction shutter drive motor A
25 Suction grill 26 Suction duct 27 Bend cap 28 Exhaust duct 29 Natural inlet 30 Natural inlet shutter

Claims (7)

A ventilator characterized by providing a fan motor for discharging indoor air and a differential pressure sensor capable of detecting positive pressure and negative pressure at an exhaust port in order to detect the pressure of the discharged air. The fan motor that discharges indoor air, the differential pressure sensor that can detect positive and negative pressure at the exhaust port to detect the pressure of the exhaust air, and the exhaust port to block outside air from the outside The shutter according to claim 1, further comprising a shutter, wherein the fan motor is operated or stopped by a change in pressure value detected by the differential pressure sensor due to outside wind from outside, and the shutter is opened or closed. Ventilation device. The ventilator according to claim 1, wherein when the detected value of the differential pressure sensor is within a predetermined value in the ventilator, the fan motor is operated or stopped and the shutter is opened or closed. The ventilator according to claim 1, wherein when the fan motor is stopped and the shutter is closed by the detected value of the differential pressure sensor in the ventilator, the operation is resumed at a predetermined time. The ventilator according to claim 1, wherein a shutter is provided at the suction port so that outside air is not blown into the room. Shutters are provided at multiple air intakes on the indoor side, and only when the initial power is turned on, the multiple shutters are opened and closed in order. The ventilation apparatus according to claim 1, wherein the ventilation apparatus is adjusted. The ventilator according to claim 1, wherein a natural air inlet with a shutter is provided in the room, and the shutter is opened and closed in conjunction with the ventilator when the ventilator is operated or stopped.

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