JP3529300B2 - Ventilation equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a fan motor for driving a fan for ventilation, and a control means for controlling drive power to the fan motor so that the amount of ventilation by the fan becomes a target air volume. The ventilation device.

[0002]

2. Description of the Related Art In a ventilation device having the above-mentioned structure, conventionally, as disclosed in, for example, Japanese Unexamined Patent Publication No. 57-189916, there is a rotation speed detecting means for detecting the rotation speed of the fan motor and the fan motor. A voltage detecting means for detecting an applied voltage is provided, and a control function of a required applied voltage for achieving the target air volume with respect to the rotational speed is previously stored in the memory as map data and detected by the rotational speed detecting means. The required applied voltage is obtained from the rotation speed and the control function, and the deviation between the required applied voltage and the actual applied voltage detected by the voltage detecting means is obtained,
If the absolute value of the deviation is larger than the set amount, there is a configuration in which the drive power (current value) of the fan motor is controlled to be increased or decreased by a certain amount depending on whether the deviation is positive or negative.

[0003]

The above-mentioned conventional structure is such that the air flow by the fan can be maintained at the target air flow regardless of, for example, changes in ventilation resistance. There was such a disadvantage, and there was room for improvement.

That is, in the above-mentioned conventional configuration, the control function (representing the relationship between the number of rotations to reach the target air volume and the required applied voltage) stores the measurement result obtained by an experiment in advance as map data. Therefore, the data indicating the relationship between the rotation speed and the applied voltage must be discrete data, not continuous data. Then, if the actually detected rotation speed (detected rotation speed) is different from the stored multiple rotation speed data (stored rotation speed), the value closest to the detected rotation speed among the stored rotation speeds. Will be used as a substitute value. Here, if the difference between the stored rotation speed and the detected rotation speed is as small as possible, it is possible to perform accurate air volume control using an appropriate stored rotation speed that is closer to the actual rotation speed, but reduce this difference. Therefore, it is necessary to increase the number of data to be stored and reduce the resolution of the map data, which is disadvantageous in that the storage means having a large capacity is required and the cost is high. Moreover, when the number of data is increased in this way, There is also a disadvantage that it takes time to retrieve data in the control operation.

Further, in the above-mentioned conventional configuration, the current value for the fan motor is controlled to be increased or decreased by a fixed amount in accordance with the voltage deviation. Even when the current value for the motor needs to be changed significantly, the current value is changed and adjusted by a fixed amount, so the change adjustment must be repeated multiple times until the target state is reached, and the processing time will be reduced. Therefore, there is a possibility that the process of changing and adjusting the current value of the fan motor cannot be performed quickly.

The present invention has been made by paying attention to such a point, and an object thereof is to employ a rational control configuration so that the fan motor is controlled when the fan motor is controlled so as to obtain a target air volume. The point is to provide a ventilation device that can be controlled to an appropriate state as quickly as possible.

[0007]

According to a characteristic structure of claim 1, a rotation speed detecting means for detecting the rotation speed of the fan, and a voltage detection for detecting an applied voltage applied to the fan motor. And a storage unit that stores a target air flow rate relational expression indicating a relationship between a fan rotation speed and a target applied voltage applied to the fan motor, in which the air flow rate by the fan becomes the target air flow rate. Is the deviation between the target applied voltage obtained from the fan rotational speed detected by the rotational speed detecting means and the target air volume relational expression and the current applied voltage detected by the voltage detecting means, and In order to reduce the deviation, the air volume control for changing and adjusting the applied voltage applied to the fan motor is executed in a state that the larger the deviation is, the larger the change adjustment amount is.

That is, the relationship between the fan rotation speed at which the air flow volume by the fan becomes the target air flow rate and the target applied voltage is stored as a target air flow rate relational expression, and the fan rotation number and the target air volume detected by the rotation speed detection means are stored. The target applied voltage that can obtain the target air volume is obtained from the relational expression. However, since the relationship between the rotation speed and the applied voltage is stored as an expression, that is, as a continuous correspondence relationship, As compared with the one in which the discrete data is stored as the map data as described above, the target applied voltage with respect to the detected rotation number can be accurately obtained with a small error. It is necessary to execute the processing for obtaining the applied voltage corresponding to the detected rotation speed from the map data group of, which is disadvantageous in that the processing takes time. It becomes capable of performing fast processing by obtaining the target applied voltage by the calculation based on the equation. Also, when the applied voltage applied to the fan motor is changed and adjusted to reduce the deviation, the applied voltage is changed and adjusted in such a state that the larger the deviation is, the larger the change adjustment amount is. In comparison with a configuration in which the change adjustment operation is repeated a plurality of times until the target state is reached, the adjustment adjustment is performed with a large change adjustment amount if the deviation is large. It is possible to quickly reach the target state by reducing the number as much as possible.

As a result, when controlling the fan motor so as to obtain the target air volume, the target applied voltage for achieving the target air volume can be obtained more accurately and the target applied voltage can be obtained more accurately than the conventional control. It will be possible to quickly perform required processing and change adjustment processing of applied voltage,
It has become possible to provide a ventilation device that can control the fan motor to an appropriate state as quickly as possible.

According to the characterizing feature of claim 1,
The storage means is configured to store a plurality of target air volume relational expressions corresponding to a plurality of types of target air volumes, and a designating means for selecting and designating one of the plurality of types of target air volumes is provided. The control means is configured to execute the air volume control using a target air volume relational expression corresponding to the target air volume designated by the designating means.

Therefore, it is possible to select an appropriate one of a plurality of target air volumes according to the usage situation, and to control the target air volume so that the target air volume can be achieved. Even if the target air volume is selected, the fan motor can be controlled to the proper state as quickly as possible.

Further, according to the characteristic construction of claim 1.
For example, the room is ventilated by the ventilation of the fan. Therefore, when the room is ventilated by the ventilation operation of the fan, the fan motor can be controlled as quickly as possible so that the ventilation air flow becomes the target air flow.

According to the feature configuration described in claim 2, wherein
In paragraph 1 , the fan draws air in the bathroom through the air intake path for the bathroom, sucks air for other rooms other than the bathroom through the air intake path for the other room, and passes air taken in from each room through the exhaust path. It is configured to be exhausted to the outside.

That is, by the ventilation by the fan,
Air in the bathroom is taken in through the air intake path for the bathroom, air in other rooms other than the bathroom is taken in through the air intake path for other rooms, and the air taken in from each room is exhausted to the outside through the exhaust path. As a result, it is possible to ventilate a plurality of rooms at the same time, and it is possible to control the fan motor to an appropriate state as quickly as possible so that the target air volume for ventilation is achieved when ventilation is performed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A case in which the ventilation device according to the present invention is applied to a ventilation device having a bathroom heating / drying function and a function of simultaneously ventilating multiple rooms will be described with reference to the drawings. As shown in FIGS. 1 and 9, the ventilation device has a ventilation fan 15 as a ventilation fan, and is installed on the ceiling of the bathroom BR so that the ventilation fan 15 acts on the bathroom BR. A suction grill 19 as an intake passage for another room provided on the ceiling of each of the main body M, the undressing room DR, and the toilet TR, and an intake duct connecting the suction grill 19 and the apparatus main body M so that the ventilation fan 15 acts as an intake air. 20, an exhaust grill 21 provided on the outer wall of the house, an exhaust duct 22 connecting the exhaust grill 21 and the apparatus main body M so that the suction air of the ventilation fan 15 is discharged from the exhaust grill 21, various controls of the ventilation device. Controlling unit 2
3, a main remote controller Cm provided in the undressing room DR and the like for instructing various operation information to the control unit 23, a sub remote controller Cs provided in the toilet TR, and the like.

The apparatus main body M comprises a ventilation unit M1 and a bathroom heating unit M2, and the ventilation unit M1 and the bathroom heating unit M2 are integrally assembled with the control unit 23. The ventilation device is configured to have a function of drying and heating the bathroom BR, in addition to a function of ventilating the dressing room DR, the toilet TR, and the bathroom BR.

The ventilator is, for example, as shown in FIG.
Installed in a house with excellent airtightness. In this house with excellent airtightness, each room LR other than the sanitary area including the bathroom BR, dressing room DR, and toilet TR is provided with an air supply port 25, and ventilation is provided between the sanitary area and each room LR. In order to make it possible, the door of each living room LR is provided with an undercut or a gutter.

The bathroom heating unit M2 will be described with reference to FIG. The bathroom heating unit M2 is opened at the lower side and has a casing 1 having an exhaust communication port 2 for exhausting ventilation air on one side surface, and a suction part 3 and a blowout part 4 serving as a bathroom air intake passage. The grill plate 5 is provided so as to close the lower side. A circulation air passage 6 that connects the suction portion 3 and the blow-out portion 4 is defined inside the casing 1, and the exhaust communication port 2 includes the suction portion 3
It is formed so as to communicate with the circulating air passage 6 in the middle of the circulating air passage 6 from the outlet to the outlet 4. Inside the circulation air passage 6, the circulation fan 7 that acts as an intake air to the suction portion 3 and that acts to send intake air to the blow-out portion 4 and the exhaust communication port 2 and the circulation air passage 6 are passed. A heat exchanger 8 for heating air is provided. The heat exchanger 8 is connected to a hot water circulation passage 9 for circulating and supplying hot water from an external heat source device (not shown), and the hot water circulation passage 9 is provided with the hot water supply to the heat exchanger 8. An intermittent thermal valve 10 is provided.

The ventilation unit M1 will be described with reference to FIG. The ventilation unit M1 is provided with a bathroom intake port 12 on one surface, two other room intake ports 13 on the other surface, and an exhaust port 14 on the other surface.
A ventilation fan 15 is provided in one of the three intake ports 12, 1
Intake air to 3, 13 and intake air to exhaust port 1
4 is provided so as to act as a ventilation device.

Then, the exhaust communication port 2 of the casing 1 for the bathroom heating unit and the casing 11 for the ventilation unit.
When the ventilation unit casing 11 is attached in a cantilevered manner to the side surface of the bathroom heating unit casing 1 in a cantilevered manner with the bathroom inlet unit 12 of FIG. Ventilation unit M in a state where intake air acts on circulation air passage 6 through communication port 2
1 and the bathroom heating unit M2 are integrally assembled.

Further, the exhaust communication port 2 is opened so that the ventilation fan 15 acts on the circulation air passage 6 to cause an intake action, and the exhaust communication port 2 is closed to provide the ventilation fan for the circulation air passage 6. There is provided a shutter device S that can be freely switched to a closed state in which the intake action by 15 is stopped. As shown in FIG. 1, the shutter device S includes a horizontal shaft body 16 disposed laterally at a substantially vertical center of the exhaust communication port 2 and the exhaust communication port 2 with respect to the horizontal shaft body 16.
The shutter plate 17 is pivotally supported at a substantially central portion so as to be swingable in a state in which the shutter plate 17 is in a vertical posture, and the shutter plate 17 is energized in a state in which the shutter plate 17 is in the vertical posture. It comprises an electromagnet 18 which is attracted to the upper end and held in a vertical posture.

When viewed from the bathroom heating unit M2 side, the electromagnet 18 is arranged so as to be attracted to the upper end portion of the back surface of the shutter plate 17 to prevent the electromagnet 18 from being exposed to the humidity of the bathroom BR. , To improve durability. When the electromagnet 18 is in the non-energized state, the shutter plate 17 swings to the ventilation unit M1 side due to the intake action of the ventilation fan 15 so that the shutter plate 17 is in the lateral position and the exhaust communication port 2 is opened. (See Figure 2). The shutter plate 17 is bent in a dogleg shape in a side view so that the lower portion is located closer to the ventilation unit M1 side than the upper portion in the closed state in which the shutter plate 17 is in the vertical posture, and is closed. A moment force is applied in the direction to smooth the closing operation.

Further, in the casing 1 for the bathroom heating unit, a temperature sensor 24 for detecting the temperature of the air in the bathroom BR sucked from the suction portion 3 is provided near the suction portion 3.

Then, the apparatus main body M configured as described above
Is installed with the bottom opening of the casing 1 for the bathroom heating unit facing the ventilation opening formed in the ceiling of the bathroom BR, and the grill plate 5 is attached from the lower side of the ceiling of the bathroom BR. Further, the other-room intake ports 13 of the ventilation unit M1 are connected to the intake grilles 19 of the undressing room DR and the toilet TR by the intake duct 20, and the ventilation unit M1 is connected.
The exhaust port 14 and the exhaust grill 21 are connected by an exhaust duct 22.

Therefore, the bathroom BR, the dressing room DR, and the toilet TR are ventilation target areas. Then, the ventilation fan 15 acts on the bathroom BR through the bathroom intake port 12, the exhaust communication port 2 and the circulation air passage 6, and through the other room intake ports 13 and the intake ducts 20, the undressing room DR. Inspires the toilet and the toilet TR. The shutter device S functions as a ventilation switching unit that can switch between an operating state in which the intake action of the ventilation fan 15 acts on the bathroom BR and a non-acting state in which the intake action of the ventilation fan 15 on the bathroom BR is reduced. The state in which the electromagnet 18 is energized corresponds to the non-acting state. In the non-acting state, as shown in FIG.
7 is held in the vertical position, and the exhaust communication port 2 is closed. Further, the state in which the electromagnet 18 is in the non-energized state corresponds to the above-mentioned operating state, and in that operating state, as shown in FIG. 2, the shutter plate 17 is brought into a sideways posture by the intake action of the ventilation fan 15. The exhaust communication port 2 is opened.

The ventilation device heats the bathroom BR in a dry operation mode (hereinafter abbreviated as dry mode), a cool air operation mode in which air in the bathroom BR is circulated (hereinafter abbreviated as cool air mode), and a bathroom BR. Heating operation mode (hereinafter,
In addition to the heating mode), various ventilation operation modes described below can be executed. The ventilation operation mode includes a normal ventilation mode in which the bathroom BR, the dressing room DR, and the toilet TR are ventilated at a normal air flow rate, and a dressing room DR and the toilet TR in which ventilation in the bathroom BR is stopped.
The normal ventilation mode in which the bathroom is off with the above normal ventilation volume, the 24-hour ventilation mode in which the bathroom BR, the dressing room DR, and the toilet TR are ventilated with a small ventilation volume smaller than the normal ventilation volume, and the ventilation of the bathroom BR is performed. 24 in the bathroom off state in which the dressing room DR and the toilet TR are ventilated at the small ventilation volume while stopped
The time ventilation mode can be executed.

As shown in FIG. 5, the main remote controller Cm has a drying switch 31 for instructing execution and stop of the drying mode, a drying lamp 32 for indicating that the drying mode is being executed, and execution and stop of the cool air mode. A cool breeze switch 33 for instructing, a cool breeze lamp 34 for indicating that the cool breeze mode is in execution, a heating switch 35 for instructing execution and stop of the heating operation mode, a heating lamp 36 for indicating that a heating mode is in execution, A 24-hour ventilation switch 37 for instructing the execution and stop of the 24-hour ventilation mode, a 24-hour ventilation lamp 38 for indicating that the 24-hour ventilation mode is being executed, a command for executing and stopping the normal ventilation mode,
In addition, a ventilation switch 39 that switches whether to turn off the bathroom in the 24-hour ventilation mode, a strong ventilation lamp 40 that indicates that the normal ventilation mode is being executed, a bathroom-off state in the normal ventilation mode or the 24-hour ventilation mode. There is provided a bathroom cut-off lamp 41 that indicates that, a timer switch 42 that sets a timer time, and a timer display section 43 that displays the timer time set by the timer switch 42.

The timer time which can be set by the timer switch 42 includes the operating time of each of the dry mode, the cool air mode, the heating operation mode and the normal ventilation mode, and the state of the bathroom being turned off during the execution of the 24-hour ventilation mode. You can set the time.

The drying switch 31, the cool air switch 33, the heating switch 35, and the 24-hour ventilation switch 37 are respectively
Every time it is operated, execution and stop are instructed alternately. The ventilation switch 39 is shown in FIG. 4, although details thereof are omitted in connection with the execution state of each operation mode by the drying switch 31, the cool air switch 33, the heating switch 35, and the 24-hour ventilation switch 37 each time it is operated. As described above, various operation information is commanded. In FIG. 4, A indicates a 24-hour ventilation mode in which the bathroom is off, B indicates a normal ventilation mode, C indicates a 24-hour ventilation mode, and D indicates an operation stop state in which the operation of the ventilation device is stopped. . Although not shown, the sub remote controller Cs is provided with a switch for instructing execution and stop of the normal ventilation mode when the bathroom is off.

When the execution of the 24-hour ventilation mode is instructed, the 24-hour ventilation lamp 38 is turned on, and the ventilation fan 15 is in a non-energized state. Operate with. Therefore, as shown in FIG. 2, since the shutter plate 17 is in a horizontal posture by the intake action of the ventilation fan 15 and the exhaust communication port 2 is opened, the bathroom BR, the changing room DR, and the toilet TR have a small ventilation amount. Is ventilated in. When the ventilation device is installed in a house having excellent airtightness as shown in FIG. 9, the ventilation is performed over substantially the entire area of the house along with the ventilation of the sanitary area including the bathroom BR, the dressing room DR, and the toilet TR. When the 24-hour ventilation switch 37 is pressed for 2 seconds or more, the 24-hour ventilation lamp 38 is turned off, the ventilation fan 15 is stopped, and
Exit the 4-hour ventilation mode.

As for the small air flow, the main remote controller C
80m ³ / by the air volume selector switch 44 built in m
It can be set to any of h, 100 m ³ / h and 120 m ³ / h. The small air flow, for example, in the case of ventilating over substantially the entire area of a house with excellent airtightness,
Set so that the ventilation rate of 0.5 times / h can be secured.

When the execution of the 24-hour ventilation mode in the bathroom-off state is instructed, the timer display section 43 is displayed, the bathroom-off lamp 41 is lit, and the electromagnet 18 is operated while the 24-hour ventilation lamp 38 is kept on. Is turned on and the ventilation fan 15 is set for closing the shutter (for example, about 6 seconds).
Then, the ventilation fan 15 is operated again with the small air flow rate. The previously set timer time is displayed on the timer display section 43, and the timer switch 42 can be used to set the timer time for turning off the bathroom while the 24-hour ventilation mode is being executed, if necessary. Therefore, while the ventilation fan 15 is temporarily stopped, as shown in FIG. 1, the shutter plate 17 is attracted by the electromagnet 18 to be in the vertical posture and the exhaust communication port 2 is closed, so that the ventilation of the bathroom BR is performed. In the state in which is stopped, the dressing room DR and the toilet TR are ventilated with a small amount of ventilation.

When the timer elapses during execution of the 24-hour ventilation mode with the bathroom turned off, the electromagnet 18 is de-energized and the normal 24-hour ventilation mode is executed.

When the normal ventilation mode is commanded, the timer display section 43 is displayed, the ventilation strong lamp 40 is turned on, and the electromagnet 18 is de-energized. Operate at a rotation speed that provides a normal ventilation volume that is greater than the volume. The normal air flow rate is preset to, for example, about 170 m ³ / h. The previously set timer time is displayed on the timer display section 43, and the timer time for executing the normal ventilation mode can be set by the timer switch 42 as necessary. Therefore, the shutter plate 17 is sucked by the intake action of the ventilation fan 15.
Is in a lateral position and the exhaust communication port 2 is opened, so that the bathroom BR, the dressing room DR, and the toilet TR are ventilated at a normal ventilation volume higher than the small ventilation volume.

Whether the ventilation switch 39 is pressed again,
When the timer time has elapsed, if the ventilation mode has not been executed for 24 hours before executing the normal ventilation mode, the display of the timer display unit 43 is stopped, the ventilation strong lamp 40 is turned off, and the ventilation fan 15 is turned on. Stop the operation to bring it to a stopped state. On the other hand, before performing normal ventilation mode, 2
When the 4-hour ventilation mode has been executed, the 24-hour ventilation mode is executed.

When the sub remote controller Cs is set to the "on" state and the execution of the normal ventilation mode in the bathroom off state is instructed, the strong ventilation lamp 40 and the bathroom off lamp 41 are turned on,
The electromagnet 18 is energized, the ventilation fan 15 is temporarily stopped for the shutter closing setting time, and then the ventilation fan 15 is operated again at the normal ventilation amount. Therefore, while the ventilation fan 15 is temporarily stopped, the shutter plate 17 is attracted by the electromagnet 18 to be in the vertical posture and the exhaust communication port 2 is closed, so that the ventilation of the bathroom BR is stopped and undressing is performed. The room DR and the toilet TR are ventilated. Therefore, because the bathroom BR is not ventilated, the changing room D
The ventilation volume of R and the toilet TR can be made larger than the normal ventilation volume.

When the sub remote controller Cs is set to the "OFF" state, if the ventilation mode is not executed for 24 hours before the normal ventilation mode of the bathroom OFF state is executed, the strong ventilation lamp 40 and the bathroom OFF lamp 41. Is turned off, the electromagnet 18 is de-energized, the ventilation fan 15 is stopped, and the operation is stopped. On the other hand, when the 24-hour ventilation mode is being executed before the normal ventilation mode in which the bathroom is turned off, the 24-hour ventilation mode is executed.

When the drying mode is instructed, the timer display section 43 is displayed, the drying lamp 32 is turned on, and the electromagnet 18 is turned on.
In a non-energized state, the ventilation fan 15 is operated at a rotation speed at which the ventilation amount becomes the normal ventilation amount, and
The thermal valve 10 is opened and the circulation fan 7 is operated. Further, based on the temperature detected by the temperature sensor 24, when the detected temperature becomes equal to or higher than the heating stop set temperature (for example, 50 ° C.), the thermal valve 10 is closed to supply hot water to the heat exchanger 8. When stopped and the detected temperature becomes equal to or lower than the set temperature for heating (for example, 40 ° C.), the thermal valve 10 is opened,
Hot water is circulated and supplied to the heat exchanger 8. Timer display 43
Indicates the previously set timer time. If necessary, the timer switch 42 can be used to set the timer time for the dry mode operation.

Therefore, the intake action of the ventilation fan 15 causes the shutter plate 17 to be in a horizontal posture and the exhaust communication port 2 is opened, so that the suction port 3 sucks the air from the bathroom BR to flow through the circulation air passage 6. Part of the air to be discharged is discharged through the exhaust communication port 2, and the remaining part is returned to the bathroom BR from the blowout part 4 after being heated by passing through the heat exchanger 8. Therefore, since the relative humidity of the bathroom BR decreases, the bathroom BR
Or the laundry etc. installed in the bathroom BR is dried. In parallel, the dressing room DR and the toilet TR are also ventilated.

Whether the dry switch 31 is pressed again,
When the timer time has elapsed, if the ventilation mode has not been executed for 24 hours before executing the drying mode, the display of the timer display unit 43 is stopped, the drying lamp 32 is turned off, and the thermal valve 10 is closed. Then, the ventilation fan 15 and the circulation fan 7 are stopped, and the operation is stopped. on the other hand,
If the 24-hour ventilation mode is being executed before the dry mode is executed, the 24-hour ventilation mode is executed.

When the cool breeze mode is commanded, the timer display section 43 is displayed, the cool breeze lamp 34 is turned on, and the electromagnet 18 is turned on.
In the state where is not energized, the ventilation fan 15 is operated at a rotation speed at which the ventilation amount becomes the normal ventilation amount, and the circulation fan 7 is operated. The previously set timer time is displayed on the timer display portion 43, and the timer time for the cool breeze mode operation can be set by the timer switch 42 as necessary.

Therefore, the intake action of the ventilation fan 15 causes the shutter plate 17 to be in a horizontal posture and the exhaust communication port 2 is opened, so that the suction port 3 sucks the air from the bathroom BR to pass the circulation air passage 6. A part of the flowing air is discharged through the exhaust communication port 2, and the remaining part is blown out from the blowout part 4.
Is returned to the bathroom BR. In parallel with that, the dressing room DR and the toilet TR are also ventilated.

Is the cool breeze switch 33 pressed again?
When the timer time has elapsed, if the ventilation mode has not been executed for 24 hours before executing the cool breeze mode, the display of the timer display unit 43 is stopped, the cool breeze lamp 34 is turned off, and the ventilation fan 15 and the circulation fan 15 are circulated. The fan 7 is stopped and the operation is stopped. On the other hand, if the ventilation mode was running for 24 hours before running the cool breeze mode,
Run the hour ventilation mode.

When the heating mode is commanded, 2
When the 4-hour ventilation mode is not executed, the timer display unit 43 is displayed, the heating lamp 36 is turned on, the thermal valve 10 is opened, and the circulation fan 7 is operated. When the 24-hour ventilation mode is being executed, in addition to the above-mentioned control, the electromagnet 18 is further energized to make the ventilation fan 1
5 is temporarily stopped for the set time for closing the shutter, and then the ventilation fan 15 is operated again with the small air flow rate. Further, when the detected temperature becomes equal to or higher than the set temperature for heating stop based on the detected temperature of the temperature sensor 24, the thermal valve 1
0 is closed, and when the detected temperature becomes equal to or lower than the heating set temperature, the thermal valve 10 is opened. The previously set timer time is displayed on the timer display section 43, and the timer switch 42 can be used to set the timer time for the heating mode operation, if necessary.

Therefore, when the heating mode is commanded while the 24-hour ventilation mode is being executed, as shown in FIG. 3, the shutter plate 17 is in the vertical posture and the exhaust communication port 2 is opened. In the closed state, the air sucked from the bathroom BR through the suction unit 3 passes through the heat exchanger 8 and is heated, and then returned from the blowing unit 4 to the bathroom BR, and
The dressing room DR and the toilet TR are ventilated. That is, the heating mode and the 24-hour ventilation mode with the bathroom turned off are executed in parallel. In this case, since the exhaust communication port 2 is closed, the heating performance of the bathroom BR is prevented from being deteriorated by the ventilation of the dressing room DR and the toilet TR.

Whether the heating switch 35 is pressed again,
When the timer time has elapsed, if the 24-hour ventilation mode is being executed before the heating mode is executed, the display of the timer display portion 43 is stopped, the heating lamp 36 is turned off,
The thermal valve 10 is closed and the circulation fan 7 is stopped. After that, when the preset time for heating maintenance (for example, about 1 hour) elapses, the electromagnet 18 is de-energized. Therefore, the 24-hour ventilation mode with the bathroom turned off is executed until the heating time setting time elapses, and the normal 24-hour ventilation mode is executed after the heating time setting time elapses. Become. When the heating switch 35 is pressed again or the timer time has elapsed, if the ventilation mode has not been executed for 24 hours before executing the heating mode, the display of the timer display portion 43 is stopped and the heating lamp 36 is turned off. Then
The thermal valve 10 is closed, the circulation fan 7 is stopped, and the operation is stopped.

Next, the fan control structure for driving the ventilation fan 15 in the control unit 23 will be described in detail. According to the operation mode at that time, the control unit 23 determines, for example, in the 24-hour ventilation mode that the ventilation amount by the ventilation fan is the three types of small ventilation amount (80 m).
³ / h, 100 m ³ / h, and 120 m ³ / h), the ventilation volume set by the air volume changeover switch 44 as the designation means becomes, and in the normal ventilation mode, the normal ventilation volume (170
m ³ / h), the drive power (specifically, the applied voltage) to the fan motor 45 that drives the ventilation fan 15 is controlled. The fan motor 45 is composed of a DC brushless motor.

Specifically, as shown in FIG. 6, in the fan control configuration, the drive power for the fan motor 45 that drives the ventilation fan 15 so that the ventilation amount by the ventilation fan 15 becomes the target air volume ( Specifically, the motor control means 46 for controlling the applied voltage), the rotation speed sensor 47 as the rotation speed detection means for detecting the rotation speed of the fan 15, and the voltage detection for detecting the applied voltage applied to the fan motor 45. The amount of ventilation by the voltage detection unit 48 and the fan 15 as means is set in advance so as to be a target air volume that is set in advance (a small amount of air as described above or an amount of air selected from the normal amount of ventilation). As a storage means for storing a target air volume relational expression showing a relationship between a set fan rotation speed and a target applied voltage to be applied to the fan motor 45 with respect to the fan rotation speed. It is configured to provide a respective non-volatile memory 49.

The motor control means 46 comprises a microcomputer, and a rotation speed sensor 47.
The target applied voltage corresponding to the target air volume is obtained from the fan rotational speed detected in step 1 and the target air volume relational expression, and the deviation between the target applied voltage and the current applied voltage detected by the voltage detector 48 is detected. Then, in order to reduce the deviation, the larger the deviation is, the larger the change adjustment amount is. Therefore, the air flow rate control for changing and adjusting the applied voltage is executed by obtaining the change adjustment amount with respect to the current applied voltage of the fan motor 45. I am configuring. That is, as shown in FIG. 6, the motor control means 46 has the target air flow rate relational expression selected according to the switching information of the air flow rate changeover switch 44 and the above-mentioned operation mode switching information, and the rotation speed sensor 47. A target voltage calculation unit 100 for obtaining the target applied voltage Vs from the fan rotation speed Nx detected at
And a comparison unit 101 that obtains a deviation between the current applied voltage Vo detected by the voltage detection unit 48 and a calculation unit that obtains a change adjustment amount in a state where the change adjustment amount increases as the deviation decreases so that the deviation decreases. 102 and a drive unit 103 that applies the applied voltage changed by the obtained change adjustment amount to the fan motor 45.

The target air volume relational expression written and stored in the memory 49 will be described. This relational expression is a fan motor such that a target air volume (here, the above four types of air volume) can be obtained by the fan rotation speed in a state where the fan rotation speed is changed in advance by an experiment using the ventilation fan 15. The voltage applied to 45 is measured, and, for example, as shown in FIG. 7, the relationship between the fan rotation speed and the target applied voltage applied to the fan motor 45 is measured so that the ventilation amount of the ventilation fan 15 becomes the target air amount. And the corresponding relationship between them is set as a polynomial as described later.

In a concrete example based on actual measurement data by the applicant
To explain, the target air volume is "80 m ³/ H ”
Represents the rotation speed as Y and the applied voltage as X.
And can be expressed as the following formula 1.

[0052]

[Number 1] Y = -0.4677X ² + 67.347X-1
06.09

Thereafter, in the same manner, the target air volume is "100.
m ³ / h ”is represented by the following formula 2, when the target air volume is“ 120 m ³ / h ”is represented by the following formula 3, and the target air volume is“ 170 m ³ / h ” Is expressed by the following equation 4. Then, it will be stored in the memory as such polynomial information.

[0054]

Y = −0.402X ² + 63.754X−93.863

[0055]

Y = −0.2929X ² + 58.23X−59.628

[0056]

[Number 4] Y = -0.1552X ² + 49.489X-4
1.378

Next, the control operation will be described. 4 above
When the execution of the ventilation operation is started in the state where any one of the target air volumes of the types is designated, first, the fan motor 45 is initially set to an initial set value (for example, a minimum voltage of 10).
V) is applied and driven. Then, the fan motor 45 is driven at the fan rotation speed corresponding to the magnitude of the ventilation resistance at that time. Then, the rotation speed sensor 47 detects the rotation speed of the fan at that time. Then, the target voltage calculation unit 100 detects the target air volume relational expression in which one of four types is selected according to the switching information of the air volume switching switch 44, the switching information of the operation mode, and the like, and the rotation speed sensor 47. The target applied voltage Vs for achieving the target air volume is obtained from the fan rotation speed Nx.

The target applied voltage V thus obtained
s and the current applied voltage Vo detected by the voltage detector 48
The deviation εn from the
In 2, in order to reduce the deviation εn, the change adjustment amount is obtained in a state where the change adjustment amount increases as the deviation εn increases. Specifically, the change adjustment amount MVm is calculated by the proportional-plus-integral (PI) control based on the deviation εn as shown in the following equation 5, and the drive unit 103 changes the change adjustment amount to the current applied voltage Vo. The applied voltage changed by MVm is supplied to the fan motor 45. Kp is a proportional constant and Ki is an integral constant.

[0059]

[Formula 5] MVm = Kp · εn + Ki · Σεn

Then, such control is repeatedly executed.
By doing so, in various ventilation modes as described above
It is possible to maintain an appropriate air volume. In FIG.
A change characteristic diagram of static pressure vs. air volume in such volume control
Shows. In the figure, the line L1 has a target air volume of "80 m.³
/ H ”, the target air volume of line L2 is
"100m³/ H ”, the line L3 is
The target air volume is "120m³/ H ”, it corresponds to
In L4, the target air volume is "170m. ³/ H ”
It corresponds. The line Q1 in the figure is as described above.
A characteristic line of average ventilation resistance in an airtight house is shown.
If the installation location is different and the ventilation resistance changes,
Even if it is the case, for example, the characteristic line is shown by a virtual line Q2 in the figure.
Change, the air volume (especially the small air volume characteristic) is not set.
The target air volume is controlled to be maintained.
The above relational expressions and specific numerical values are based on experiments.
However, the present invention is not limited to such numerical values, mathematical expressions, etc.
Not limited to.

Another Embodiment Next, another embodiment will be described. (1) In the above-described embodiment, when the change adjustment amount based on the voltage deviation εn is calculated, the steady error can be reduced by the proportional integration (PI) control. However, the present invention is not limited to such a configuration, and may be implemented by, for example, proportional (P) control, or various forms such as proportional derivative (PD) control and proportional integral derivative (PID) control.

[0062]

(2) In the above embodiment, the bathroom and the other two rooms (a dressing room and a toilet) other than the bathroom are simultaneously ventilated, but, for example, only the bathroom and the dressing room are ventilated. Ventilation may be performed in various modes, such as a configuration for ventilating a bathroom and a toilet, a configuration for ventilating only one of the rooms.

(3) Further, the invention of the present application is not limited to the ventilation device as described in the above-described embodiment, and other forms such as a ventilation device for ventilating combustion air to a combustion device such as a burner. It can also be applied to the ventilation device.

[Brief description of drawings]

FIG. 1 is a block diagram of a ventilation device and 2 in a state where the bathroom is off.
The figure which shows the ventilation state at the time of 4-hour ventilation mode execution

FIG. 2 is a block diagram of a ventilation device and a diagram showing a ventilation state during execution of a 24-hour ventilation mode.

FIG. 3 is a block diagram of a ventilation device and a diagram showing a ventilation state during execution of a heating mode.

FIG. 4 is a diagram showing driving information instructed by a main remote controller.

[Figure 5] Front view of the main remote controller

FIG. 6 is a control configuration diagram of a fan motor

FIG. 7 is a diagram showing a relationship between a rotation speed and an applied voltage.

FIG. 8 is a change characteristic diagram of static pressure and air volume.

FIG. 9 is a plan view of the house showing the installation state of the ventilation device.

[Explanation of symbols]

3 Bathroom air intake 15 fans 19 Other room intake passage 44 Designating means 45 fan motor 46 control means 47 Rotation speed detection means 48 voltage detection means 49 storage means BR bathroom DR, TR Other room Nx fan speed εn deviation Vs Target applied voltage Vo Current applied voltage

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuyuki Morimoto 1-52, Minami-shi Oka, Minato-ku, Osaka, Osaka 1-52 Harman Co., Ltd. (72) Inventor Hiroaki Doi 1-1-52 Oka, Minami-shi, Minato-ku, Osaka, Osaka No. Harman Co., Ltd. (72) Inventor Kosaku Imamura 1-152 Minami-shi Oka, Minato-ku, Osaka-shi, Osaka Within Harman Co., Ltd. (72) Inventor Katsuhiro Uchikawa 1-1-52 Minami-shi Oka, Minato-ku, Osaka Osaka Company Harman (56) Reference JP 57-118916 (JP, A) JP 8-140390 (JP, A) JP 11-63607 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 11/04

Claims (2)

(57) [Claims] 1. A fan motor for driving a ventilation fan, and a ventilation amount of the fan, which is a target air volume,
A ventilation device provided with a control means for controlling drive power to the fan motor, the rotation speed detecting means for detecting a rotation speed of the fan, and a voltage for detecting an applied voltage applied to the fan motor. And a storage unit that stores a target air flow rate relational expression indicating a relationship between a fan rotation speed and a target applied voltage applied to the fan motor, in which the air flow rate by the fan becomes the target air flow rate. The means obtains a deviation between the target applied voltage obtained from the fan rotational speed detected by the rotational speed detecting means and the target air volume relational expression and the current applied voltage detected by the voltage detecting means, In order to reduce the deviation, an air volume control is executed in which the applied voltage applied to the fan motor is changed and adjusted in a state where the change adjustment amount increases as the deviation increases. Configured <br/> as a plurality of eye said storage means, corresponding to the target air volume of more
It is configured to store the equation
Select and specify one of multiple target airflow rates
Designating means is provided, and the control means controls the target air volume designated by the designating means.
The air volume control is executed using the target air volume relational expression corresponding to
It is configured to perform ventilation of the room by ventilation by the fan.
Ventilation device configured . 2. The fan sucks air in the bathroom for the bathroom.
Intake through the airway and air from other rooms other than the bathroom
Was inhaled through the intake passage for another room and was inhaled from each room
It is configured to exhaust air to the outside through the exhaust passage.
And has claim 1 ventilation device according.