JP2010048485A - Ventilation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation device capable of performing predetermined ventilating operation after ventilation is actually required after a person enters a room. <P>SOLUTION: In the ventilation device 1A, a weak operation mode for performing ventilation with first air quantity and a strong operation mode for performing ventilation with second air quantity larger than the first air quantity are set. The control part 4 counts waiting time T1 required for preparation of predetermined operation by a timer 5 when a person is detected by a human sensor 6 during operation in the weak operation mode, and switches the weak operation mode to the strong operation mode when the waiting time T1 passes. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ventilator that ventilates a sanitary space such as a toilet.

  Conventionally, a ventilator that can forcibly ventilate using a fan is installed in a small room such as a toilet. In such a ventilator, a technique for performing ventilation operation by strongly switching the air volume when an infrared sensor or the like detects that a person has entered the toilet has been proposed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2-57840

  When ventilating a toilet, etc., it is not necessary to ventilate with a strong air flow immediately after entering the room. However, in the conventional ventilation device, when it is detected that a person has entered the room, the control is performed so that the air flow is instantaneously switched to a strong air volume, so there is a problem that the time for rotating the fan at a high speed becomes longer and the power consumption increases. .

  The present invention has been made to solve such a problem, and it is an object of the present invention to provide a ventilator capable of performing a predetermined ventilation operation after a person actually enters a room after ventilation is actually required. And

  In order to solve the above-described problem, the ventilator according to the present invention has a predetermined operation waiting time elapse when a person is detected by a ventilation means for ventilating a sanitary space and a detection means for detecting a person's entry / exit in the sanitary space. And a control means for controlling the ventilation means to perform the ventilation operation.

  In the ventilator according to the present invention, when it is detected that a person has entered the sanitary space, the ventilation operation is performed after a waiting time required for the person to prepare for a predetermined operation has elapsed. For example, if the weak operation mode in which ventilation is performed with the first air volume and the strong operation mode in which ventilation is performed with the second air volume larger than the first air volume is set, the ventilation operation is always performed in the weak operation mode, and When it is detected that a person has entered the sanitary space, the ventilation operation is performed by switching the weak operation mode to the strong operation mode after the standby time of a predetermined operation has elapsed.

  According to the ventilator of the present invention, after a person enters the sanitary space, the ventilation operation can be performed after the time when ventilation is actually required, and the power consumption associated with the ventilation operation can be suppressed. it can.

  Hereinafter, an embodiment of a ventilation device of the present invention will be described with reference to the drawings.

<Configuration example of ventilation device of the present embodiment>
FIG. 1 is a functional block diagram illustrating an example of a control function of the ventilator according to the present embodiment, and FIG. 2 is a configuration diagram illustrating an installation example of the ventilator according to the present embodiment. 1A of ventilation apparatuses of this Embodiment are equipped with the motor 3 which rotationally drives the fan 2, the control part 4 which controls the drive of the motor 3, and the timer 5 which measures the drive time of the motor 3, etc., and the presence or absence of a person A human sensor 6 is connected to detect.

  The fan 2 and the motor 3 are examples of ventilation means, and have a function of performing ventilation by exhausting indoor air to the outside. The ventilation device 1A is a toilet as a sanitary space in the building 100 as shown in FIG. 101. The human sensor 6 is an example of a detection unit, and is installed in the toilet 101 to detect a person's entrance / exit.

  In the building 100, another ventilator 1B having an exhaust function for exhausting indoor air to the outside is installed in the hallway 102, for example. In the building 100, an air supply device 1C having an air supply function for supplying outdoor air into the room is installed in a room 103 such as a living room or a living room.

  The ventilation device 1A, the ventilation device 1B, and the air supply device 1C are always operated, and the outside air OA is supplied from the air supply device 1C to the room 103 as a supply air SA with a predetermined air volume. The supply air SA supplied to the room 103 passes through an undercut UC of the door 104, a gallery or the like (not shown), and is discharged from the toilet 101 to the outside by the ventilator 1A as the exhaust air EA and from the corridor 102 to the outside by the ventilator 1B. Is discharged.

  As a result, fresh outside air OA is taken into the room, and dirty room air is exhausted to the outside of the room, thereby ventilating the building.

  The ventilation device 1A is configured such that the number of rotations of the motor 3 can be switched, for example, in two stages, and the exhaust is performed with a weak operation mode in which exhaust is performed with a first air volume, and with a second air volume greater than the first air volume. The strong driving mode is set.

  The control unit 4 is an example of a control unit, and switches between the weak driving mode and the strong driving mode based on whether or not the human sensor 6 detects a person. The control unit 4 sets a waiting time T1 until switching to the strong driving mode when a human sensor 6 is detected during driving in the weak driving mode. When the human sensor 6 detects a person during driving in the weak driving mode, the control unit 4 counts the standby time T1 with the timer 5, and switches to the strong driving mode when the standby time T1 elapses. In addition, if the person is not detected by the human sensor 6 during the waiting time T1, the weak driving mode is continued.

  Moreover, the control part 4 sets the residual odor removal operation time T2 until it switches to weak driving mode, when a person is not detected by the human sensor 6 during driving | operation in strong driving mode. The controller 4 counts the residual odor removal operation time T2 with the timer 5 when the human sensor 6 detects no person during the strong operation mode, and when the residual odor removal operation time T2 has elapsed, the weak operation mode Switch to.

  If a person is detected by the human sensor 6 during the residual odor removal operation time T2, the strong driving mode is continued, and then the residual odor is detected by the timer 5 from the time when the human sensor 6 detects no person. The removal operation time T2 is counted, and when the residual odor removal operation time T2 elapses, the mode is switched to the weak operation mode.

<First operation example of the ventilator of the present embodiment>
FIG. 3 is a flowchart showing a first operation example of the ventilator according to the present embodiment. FIG. 4 is a time chart showing a first operation example of the ventilator according to the present embodiment. A first operation example of the ventilation device 1A of the present embodiment will be described with reference to FIG.

  The ventilator 1A is always operated, and the control unit 4 uses the first air volume as shown in step SA1 in FIG. 3 when the human sensor 6 does not detect a person and there is no person in the toilet 101. Ventilate operation in weak operation mode where exhaust is performed.

  When a person enters the toilet 101, as shown in step SA2 in FIG. 3, when the control unit 4 detects a person with the human sensor 6 during driving in the weak driving mode, as shown in step SA3, the timer 5 To count the waiting time T1. When the standby time T1 has elapsed, as shown in step SA4, the ventilation operation is performed by switching to the strong operation mode.

  It can be seen that the time required for preparation from the time the person enters the toilet 101 to the start of the stool takes about 7 to 15 seconds, taking into account the clothes undressing operation and the seating operation on the toilet seat. there were. For this reason, after a person enters the toilet 101, the odor is actually generated after, for example, 12 seconds.

  Therefore, if the waiting time T1 from when the human sensor 6 detects a person to when switching to the strong driving mode is set to 12 seconds, for example, the weak driving mode is continued until the time when odor is expected to occur, and the odor It will be switched to the strong driving mode after the time when it is expected to occur. Thereby, the operation time in the strong operation mode in which the motor 3 is rotated at a higher speed than the weak operation mode is shortened, and the power consumption due to driving the motor 3 can be suppressed, leading to an energy saving effect.

  As shown in step SA5 in FIG. 3, the control unit 4 monitors the output of the human sensor 6 and continues the strong driving mode when the human sensor 6 continues to detect a person. On the other hand, when no person is detected by the human sensor 6, the residual odor removal operation time T2 is counted by the timer 5 as shown in step SA6. When the residual odor removal operation time T2 elapses, the process returns to step SA1 and is weak. Switch to operation mode. In this example, the residual odor removal operation time T2 is set to 12 minutes, for example.

  If a person is detected by the human sensor 6 during the residual odor removal driving time T2, as shown in FIG. 4B, the strong driving mode is continued, and then the human sensor 6 does not detect the person. The remaining odor removal operation time T2 is counted by the timer 5 from the point of time, and when the remaining odor removal operation time T2 elapses, the mode is switched to the weak operation mode.

<The 2nd example of operation of the ventilator of this embodiment>
FIG. 5 is a flowchart showing a second operation example of the ventilator according to the present embodiment. FIG. 6 is a time chart showing a second operation example of the ventilator according to the present embodiment. A second operation example of the ventilation device 1A of the present embodiment will be described with reference to FIG.

  The ventilator 1A is always operated, and the control unit 4 uses the first air volume as shown in step SB1 in FIG. 5 in a state where the human sensor 6 does not detect a person and there is no person in the toilet 101. Ventilate operation in weak operation mode where exhaust is performed.

  When a person enters the toilet 101, as shown in step SB2 of FIG. 5, when the control unit 4 detects a person with the human sensor 6 during driving in the weak driving mode, as shown in step SB3, the timer 5 To count the waiting time T1. Then, when the standby time T1 has elapsed, as shown in step SB4, the ventilation operation is performed by switching to the strong operation mode. On the other hand, if no person is detected by the human sensor 6 during the waiting time T1, the process returns to step SB1 to continue the weak driving mode.

  As described above, the preparation time from when a person enters the toilet 101 to the start of a stool takes approximately 12 seconds, for example. Therefore, if the waiting time T1 from when the human sensor 6 detects a person to when switching to the strong driving mode is set to 12 seconds, for example, the weak driving mode is continued until the time when odor is expected to occur, and the odor It will be switched to the strong driving mode after the time when it is expected to occur. Thereby, the power consumption by driving the motor 3 can be suppressed, leading to an energy saving effect.

  On the other hand, the time from when the person entered the toilet 101 to the end of the urine was within about 1 minute, and the stool was more than 1 minute. Therefore, if the waiting time T1 from when the human sensor 6 detects a person to when switching to the strong driving mode is set to, for example, 1 minute, the weak driving mode is continued when the person enters the toilet 101 by urine. When the toilet 101 is entered by stool, the mode is switched to the strong driving mode. Thereby, the operation time in the strong operation mode in which the motor 3 is rotated at a higher speed than the weak operation mode is shortened, and the power consumption due to driving the motor 3 can be suppressed, leading to an energy saving effect.

  As shown in step SB5 in FIG. 5, the control unit 4 monitors the output of the human sensor 6 and continues the strong driving mode if the human sensor 6 continues to detect a person. On the other hand, when no person is detected by the human sensor 6, the residual odor removal operation time T2 is counted by the timer 5 as shown in step SB6. When the residual odor removal operation time T2 elapses, the process returns to step SB1 and is weak. Switch to operation mode.

  As shown in step SB7, the control unit 4 monitors the output of the human sensor 6 during the residual odor removal operation time T2. When the human sensor 6 detects a person, the next person enters the toilet 101. Determination is made and the waiting time T1 is counted by the timer 5 as shown in step SB8. Then, when the waiting time T1 has elapsed, it is determined that the next person has entered the toilet 101 by stool, the process returns to step SB4, and the strong driving mode is continued. In the subsequent processing, when a person is not detected by the human sensor 6, the residual odor removal operation time T2 is counted again, and when the residual odor removal operation time T2 has elapsed, the process returns to step SB1 to switch to the weak operation mode.

  On the other hand, as shown in FIG. 6, if no person is detected by the human sensor 6 during the waiting time T1, it is determined that the next person has entered the toilet 101 by urine, and the remaining odor removal operation time is determined by the timer 5. The remaining time of T2 is counted, and when the residual odor removal operation time T2 elapses, the process returns to step SB1 to switch to the weak operation mode.

  For example, when the standby time T1 is set to 1 minute and the residual odor removal operation time T2 is set to 12 minutes, the human sensor 6 detects a person after the residual odor removal operation time T2 has passed 6 minutes, and the standby time T1 When the human sensor 6 detects no person within one minute, the strong operation mode is continued for about 5 minutes, which is the remaining time of the residual odor removal operation time T2, and then the operation mode is switched to the weak operation mode.

  If the next person enters the toilet 101 by urine during the residual odor removal operation time T2, the strong operation mode is continued again during the residual odor removal operation time T2 after the next person leaves the toilet 101. There is no need to do it. Therefore, when the next person enters the toilet 101 during the residual odor removal operation time T2 and leaves the room during the standby time T1, the strong operation mode is continued for the remaining time of the residual odor removal operation time T2. , Can reduce power consumption.

<Modification of the operation of the ventilation device of the present embodiment>
In the first operation example and the second operation example described above, the ventilation device 1A is always operated in the weak operation mode and performs so-called 24-hour ventilation. On the other hand, when a person is detected by the human sensor 6, the ventilation operation may be started. For example, the control unit 4 does not perform the ventilation operation without driving the motor when the human sensor 6 does not detect a person and there is no person in the toilet 101.

  When the person enters the toilet 101 and the person is detected by the human sensor 6, the control unit 4 counts the standby time T1 with the timer 5, and starts the ventilation operation in the strong operation mode when the standby time T1 elapses. .

  In the ventilator 1 </ b> A, the human sensor 6 is connected as a detection unit, but a lighting switch of the toilet 101 may be used as the detection unit. For example, when the toilet 101 is turned on, it is determined that a person has entered the toilet 101, and when the toilet 101 is turned off, it may be determined that the person has left the toilet 101.

  The present invention is applied to a ventilation fan that is installed in a toilet and forcibly ventilates.

It is a functional block diagram which shows an example of the control function of the ventilation apparatus of this Embodiment. It is a block diagram which shows the example of installation of the ventilation apparatus of this Embodiment. It is a flowchart which shows the 1st operation example of the ventilation apparatus of this Embodiment. It is a time chart which shows the 1st operation example of the ventilation apparatus of this Embodiment. It is a flowchart which shows the 2nd operation example of the ventilation apparatus of this Embodiment. It is a time chart which shows the 2nd operation example of the ventilation apparatus of this Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1A ... Ventilator, 2 ... Fan, 3 ... Motor, 4 ... Control part, 5 ... Timer, 6 ... Human sensor, 101 ... Toilet

Claims (6)

A ventilation means for ventilating the sanitary space;
And a control means for controlling the ventilation means to perform a ventilation operation after a waiting time of a predetermined operation when a detection means for detecting a person entering and exiting the sanitary space detects the person. Ventilation device. The control means is configured to set a weak operation mode in which ventilation is performed with a first air volume by controlling the ventilation means and a strong operation mode in which ventilation is performed with a second air volume larger than the first air volume. 2. The ventilation according to claim 1, wherein the ventilation operation is performed by switching the weak operation mode to the strong operation mode after elapse of a predetermined operation waiting time when a person is detected by the detection means while performing the normal ventilation operation. apparatus. When a person is not detected by the detection unit during the ventilation operation in the strong operation mode, the control unit switches the strong operation mode to the weak operation mode and continues the ventilation operation after the residual odor removal operation time has elapsed. The ventilation apparatus according to claim 2. The control means, after detecting a person by the detection means, when a person is not detected by the detection means during a waiting time of a predetermined operation, continues the ventilation operation in a weak operation mode,
The ventilation apparatus according to claim 2, wherein if a person is continuously detected by the detection means after a predetermined operation standby time has elapsed, the ventilation operation is performed by switching the weak operation mode to the strong operation mode. 3. The sanitary space is a toilet, and the waiting time for a predetermined operation is set based on a time required for preparation until a person starts a stool after entering the toilet. Ventilation device. The ventilation apparatus according to claim 4, wherein the sanitary space is a toilet, and a waiting time for a predetermined operation is set based on a time required for the person to enter the toilet and finish the urination.

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