JPH0328641A - Multichamber ventilation fan - Google Patents

Abstract

PURPOSE:To vary suction air windages between rooms in response to using state and to suitably ventilate them by sending a signal to control means by detecting variation in the using state of the room by a sensor, and moving a damper by the control means to regulate the opening area of a suction port. CONSTITUTION:A variable resistor 10 is regulated by considering the sizes of a bathroom A and a lavatory B in which a main suction port 1A communicates with a sub suction port 1B at the time of installation and building state of a suction duct 3. Either light emitting side 7g or 7k of first and second photocouplers is radiated according to amplitude relationship between a signal E of a movable piece 10a of the resistor 10 and a signal F of a position detection piece 11 in a damper unit 7 for regulating windage at the side 7g or 7k of first or second photocoupler, a motor 7a is so rotated that the signal F becomes equal to the signal E. The opening area of the port 1A is regulated to regulate the ratio of suction air windages of the port 1A to 1B.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a multi-room ventilation fan that simultaneously ventilates multiple rooms.

2. Description of the Related Art Conventional ventilation fans for multiple rooms have been constructed as shown in FIGS. e and 7, for example, although no specific references can be cited. That is, the base unit 101 and the slave unit 102 are connected by a duct 103, and the ventilation fan 104 is provided only in the base unit 101, and is not provided in the slave unit 102. Here, since the intake passage on the main unit 101 side is shaped to have an overwhelmingly smaller ventilation resistance than the intake passage on the slave unit 102 side, the intake air volume on the main unit 101 side is smaller than that on the slave unit 102 side. big. Normally, the installation location (room) is selected taking into consideration this difference in intake air volume, but
If you want to increase the ventilation capacity on the second side, as shown in FIG.
By partially blocking 6 with a shielding plate 107, the suction air volume of the master unit 101 is reduced, and the suction air volume of the slave unit 102 is increased by that amount.

Problems to be Solved by the Invention In such a conventional structure, when installing a ventilation fan, the base unit 10
Although it was possible to partially block the ventilation port toe of the louver 106 that covers the air intake port of the main unit 101 with a shielding plate 107, it was possible to change the ratio of air intake between the main unit 101 and the slave unit 102. It was difficult to provide adequate ventilation. That is, when installing the chivalrous fan, the main unit 101 and the slave unit 10
2. Size of installation location (room) and base unit 101 and slave unit 102
The ratio of intake air volume between the main unit 101 and the slave unit 102 is adjusted in consideration of the pressure loss of the piping connecting the Sufficient ventilation air volume can be obtained in both rooms for regular ventilation, not when steam etc. is generated.

However, when taking a bath, a large amount of steam is generated from the bathtub, and this steam cannot be sufficiently exhausted, resulting in insufficient ventilation.

The present invention solves these problems and provides a multi-room ventilation fan that performs appropriate ventilation by changing the ratio of intake air volume between each room depending on the usage status of each room requiring ventilation. The purpose is to

Means for Solving the Problems In order to achieve the above object, the first means of the present invention is to directly communicate the lower opening of a ventilation fan body with a built-in blower into the room and use it as a main suction port, An opening provided on at least one side is connected to another chamber via an intake duct to serve as a sub-intake port, and at least one of the main suction port and the sub-suction port is connected by adjusting the opening area of the main suction port and the sub-suction port. The structure of a multi-room ventilation fan is provided with a damper that adjusts the ratio of ventilation air volume, a sensor that detects changes in the usage status of the room, and a control means that controls the operation of the damper in response to an output signal from the sensor. It was something like that.

A second method that deviates from the above purpose is to connect the bottom opening of the ventilation fan body with one built-in blower directly into the room to serve as the main suction port, and use the opening provided on at least one side to connect to other rooms. It communicates through the intake duct and serves as a sub-intake port,
A damper that adjusts the opening area of at least one of the main suction port and the sub-suction port to adjust the ratio of ventilation air volume between each room, and a damper that detects changes in the usage status of the room in at least one of the rooms. a manually operated variable impedance body in another room; and a control means for controlling the operation of the damper in response to the outputs of the sensor and the variable impedance body in the damper. It was something like that.

According to the structure of the first means, when the usage status of the room in which the sensor is installed changes, the sensor detects this and sends a signal to the control means, and the control means that receives the signal moves the damper to its place. The opening area of the suction port is adjusted by moving a fixed amount, and the ratio of ventilation air volume in each room is automatically adjusted in response to changes in the usage status of the room.

With the structure of the second means, the above-mentioned sensor automatically adjusts the ratio of ventilation airflow between each room, and a person manually operates the variable impedance body installed in the required room with sensitivity to obtain the desired ventilation airflow. After setting, the air volume distribution between each room is automatically performed by the control means that receives the output of the variable impedance body.

Embodiment First, an embodiment according to the first means of the present invention will be described based on FIGS. 1 to 3.

In the figure, the main suction port 1 on the lower side is installed in the opening in the ceiling of bathroom A.
At the same time, the sub-intake port 1B on the side is communicated via the air intake duct 3 with the suction grill 2 installed on the ceiling of the washroom B (which also serves as a dressing room) adjacent to the bathroom A, and the exhaust air is A box-shaped ventilation fan main body 5 that communicates with the outside through a duct 4 has a blower 6 therein, and the air inlet 6a of the blower 6 is opposed to the main inlet 1A, and the sub-inlet 1B The ventilation resistance of the intake air is made smaller on the main suction port 1A side than on the main suction port 1A side. 1, in the main suction port 1A located in the ventilation passage that communicates the suction port 6a of the blower 6 with the inside of the bathroom A,
A damper unit 7 is provided to adjust the air volume by adjusting the opening area, and a humidity sensor 8 that detects humidity and changes its resistance value is provided on the bathroom A side of the main suction port 1A. A human body detection sensor 9 that detects a human body and changes its resistance value is provided on the B side, and the humidity sensor 8 and the human body detection sensor 9 are connected to the control means 7C provided in the damper unit 7. 9 is connected. And the control 7C is,
A position detecting piece of a position detecting means 7b is provided on a cand on a light emitting side 7q of a first photocoupler that is optically coupled to the excitation coil 7e of a relay having an a contact 7d on the output side and its drive circuit 7f. 11 is connected to the anode, the movable piece 10a of the variable resistor 10 that connects the humidity sensor 'y'8 and the human body detection sensor 9 in series is connected, and the relay has an a contact end h on the output side of the casing. The movable piece 10a is connected to the cathode of the light emitting side 7k of the second photocoupler which is optically coupled to the excitation coil 7l and its drive circuit 7j, and the position detection piece 11 is connected to the anode. are doing. and a position detection means 7b, a humidity sensor 8,
A bridge circuit is formed by the variable resistor 10 and the human body detection sensor 9, and the movable piece 10a and the position detection piece 11 detect the balance of this bridge circuit.

When installing the multi-room ventilation fan configured as described above, first, check the size of the rooms of bathroom A and washroom B where the main suction port 1A and sub-suction port 1B communicate with each other, and the size of the air intake duct 3. When the variable resistor 10 is adjusted in consideration of the construction condition, the signal E of the movable piece 10a of the variable resistor 10 is and the signal F from the position detection piece 11 in the damper unit T that adjusts the air volume.
The light emitting side 7 (J, 7k) of the photocoupler is made to emit light, and the motor 7a is rotated according to the sequence shown in Fig. 3 so that the signal F becomes equal to the signal E, and the opening area of the main suction port 1A is The ratio of the suction air volume between the main suction port 1A and the sub suction port 1B is adjusted by adjusting the ratio of the suction air volume between the main suction port 1A and the sub suction port 1B. If the signal E is larger than F, the second photocoupler's light emitting sensor 7k is applied with a reverse bias voltage and does not emit light, but the first photocoupler's light emitting device IJIIJ 7q is applied with a forward bias voltage. The light is emitted, the drive circuit 7f becomes conductive and the excitation coil 7e of the relay is energized, and the a contact 7d is closed (ON) L.
, the motor 7a rotates in reverse and operates in the direction of closing the door. Then, in conjunction with the rotation of the motor 7a, the position detection piece 11
When the signal F is increased and the signal E and the signal F become equal, the state shown in FIG. 3 (3) is reached, both the a contacts yd and γh are opened (OFF) and the motor 7a stops. The damper is fixed, and the ratio of the suction air volume between the main suction port 1A and the sub suction port 1B is adjusted. Next, when the multi-room ventilation fan is operating in this state, a large amount of steam suddenly occurs from the bathtub in bathroom A during bathing, etc., and the humidity in the bathroom increases, the humidity sensor 8 detects this. Its resistance value increases and the signal E
The magnitude of signal F becomes smaller than the magnitude of signal F, as shown in FIG.
), the motor 7a rotates forward, that is, rotates in the direction of opening the damper, increasing the amount of suction air from the main suction port 1A and decreasing the amount of suction air from the sub suction port 1B, thereby performing ventilation. On the other hand, if the humidity in bathroom A is low and someone is in washroom B, the human body detection sensor may be activated. 9 detects a human body, the resistance value increases, the magnitude of signal E becomes larger than the magnitude of signal F, and the state shown in Fig. 3 (1) is reached, the damper moves in the closing direction, and the damper moves from the sub suction port 1B. increases the suction air volume of
Ventilation will be performed by reducing the intake air volume from the main suction port.

Next, an embodiment according to the second means of the present invention will be described based on FIGS. 4 and 6.

This embodiment has the following features compared to the first embodiment according to the first means described above. That is, in the first embodiment, the suction grill 2 provided in the washroom B is equipped with a human body detection sensor 9 and connected to one end of the variable resistor 10, whereas in the second embodiment, the A variable resistor 12, which is an example of a variable impedance body, is provided on the wall of location B, and is connected to one end of the variable resistor 10.

The operation of the multi-room ventilation fan constructed as above will be explained below.

If both Bathroom A and Washroom B are constantly ventilated (ventilation is performed under conditions where there are no sudden changes), and someone enters the washroom, for example in the winter, strong ventilation may cause the cold. Since it feels uncomfortable, a person manually removes the variable resistor 1.
Change the resistance value of 2 to reduce the ventilation air volume. The operation of the damper unit 7 at this time is the same as that in the first embodiment, so a description thereof will be omitted. Furthermore, in the summer or when there is a strong odor, strong ventilation is desired based on human sensitivity, so the variable resistor 12 is changed in the opposite way to the above to increase the ventilation air volume.

As described above, according to this embodiment, the humidity sensor 8 automatically exhausts the steam that suddenly occurs in the bathroom A, and the ventilation of the washroom B is not based on the mechanical detection of the sensor, but is performed manually. Desired ventilation can be achieved depending on sensitivity.

In this embodiment, the variable resistor 12 is installed in the washroom B as a variable resistance element, but when it is installed in the bathroom A and the air volume is manually adjusted when taking a bath in winter, the variable resistor 12 is installed in the other washroom B. Even if the human body detection sensor 9 is provided, the operation and effect are not different from those of the above embodiment.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, ventilation of multiple rooms can be achieved by automatically adjusting the ratio of ventilation air volume between each room according to changes in the usage status of each room. adjustable,
This can be achieved efficiently with one blower.

1.In addition to automatically and uniformly adjusting the air volume according to the usage status of the room, it is also possible to manually set the desired air volume in the required room, and then adjust the air volume distribution between each room after setting. Since this can be done automatically, it is possible to achieve the effect that ventilation can be performed accurately and without effort based on human sensitivity.

[Brief explanation of drawings]

FIG. 1 is an installation diagram of a multi-room ventilation fan showing an embodiment of the first means of the present invention, FIG. 2 is a circuit diagram of the damper unit, FIG. 3 is an operation sequence diagram of the damper unit, and FIG. The figure is an installation diagram of a multi-room ventilation fan showing an embodiment of the second means of the present invention, Figure 5 is a circuit diagram of the same damper unit, Figure e is an installation diagram of a conventional multi-room ventilation garden, and Figure FIG. 7 is a perspective view of the same louver. 1A: Main suction port, 1B: Sub-suction port, 3: Intake duct, 6: Ventilation fan body, 6: Blower , 7... Damper unit l-, 7c... Control means, 8... Humidity sensor, 9... Human body detection sensor, 12...
...Machihen resistance body.

Claims (2)

[Claims] (1) The opening on the bottom of the ventilation fan body with one built-in blower communicates directly into the room to serve as the main suction inlet, and the opening on at least one side of the fan body communicates with the other room via an intake duct to serve as a secondary inlet. At least one of the main suction port and the auxiliary suction port is provided with a damper that adjusts the opening area of the damper to adjust the ratio of ventilation air volume between each room, and a sensor that detects changes in the usage status of the room. , and control means for controlling the operation of the damper in response to the output signal of the sensor. (2) The opening on the bottom of the ventilation fan body with one built-in blower communicates directly with the room to serve as the main suction inlet, and the opening on at least one side of the fan body communicates with the other room via an intake duct to serve as a secondary inlet. A damper that adjusts the opening area of at least one of the main suction port and the auxiliary suction port to adjust the ratio of ventilation air volume between each room is installed as a suction port in at least one of the rooms, and a damper is installed in at least one of the main suction ports and a damper that adjusts the ratio of ventilation air volume between the rooms. A multi-chamber system comprising a sensor for detecting a change in the temperature, a manually operated variable impedance body in another chamber, and a control means for controlling the operation of the damper in response to the outputs of the sensor and the variable impedance body in the damper. ventilation fan.