JP5655368B2 - Bathroom ventilator - Google Patents

Description

The present invention relates to a bathroom ventilating device equipped with air volume adjusting device that will be installed in the inlet air from the bathroom.

  2. Description of the Related Art Conventionally, a ventilation device for a bathroom has been proposed which has a ventilation function for sucking air from a bathroom or the like and discharging it to the outside, and a function for sucking air from a bathroom or the like and blowing hot air or the like to perform heating or the like.

  Such a ventilator for a bathroom is installed on the ceiling of the bathroom, and an air inlet and outlet are arranged facing the bathroom. In order to prevent air in the bathroom from leaking during heating without ventilation, etc., and to adjust the ventilation air volume, a damper that can be opened and closed is provided at the air inlet to the fan for ventilation. (For example, refer to Patent Document 1).

  In addition, a technique for controlling the rotational speed of a damper motor has been proposed for the purpose of reducing vibration noise (see, for example, Patent Document 2).

JP 2004-125373 A JP 2004-003796 A

  Since the ventilation device for bathrooms sucks in air in the bathroom, various components in the air may adhere to the suction port or the like. For this reason, when the component in air is sticky, there exists a problem that the damper in a stop position adheres and it becomes impossible to open and close a suction inlet.

  Thus, a technique for preventing the sticking by opening and closing the damper at regular intervals has been proposed, but when the damper moves regardless of the operation of the bather or the like, there may be a case where the user feels uncomfortable. Furthermore, in the technology for controlling the rotational speed of the damper motor, the torque can be increased by lowering the rotational speed of the damper motor. However, when the rotational speed of the damper motor decreases, the time required to open and close the damper becomes longer. Etc. The waiting time becomes longer.

The present invention has been made to solve such a problem, and prevents the air passage adjusting member that opens and closes the air inlet from the bathroom from sticking and suppresses an increase in the operating time of the air passage adjusting member. and to provide a bathroom ventilating device equipped with air volume adjusting device that is.

In order to solve the problems described above , the present invention provides a suction port through which bathroom air is sucked in, a blow-out port through which bathroom air sucked in from the suction port is blown out, and sucks in bathroom air from the suction port. controlling a blower means for blowing the air outlet and full air sucked, the air volume regulating device having the suction port of the air passage opening through which air bathroom sucked by the blowing means, the air blowing means and air flow rate adjusting device from The air volume adjusting device is provided in the air passage opening portion of the suction port, and the opening degree is adjusted by a rotating operation, and the air passage opening portion is closed between the air passage opening portion and the air passage opening portion. An air path adjusting member in which a gap is formed and a drive unit having a motor for driving the air path adjusting member are provided, and the air path adjusting member is at a distal end portion in a direction orthogonal to the axis of the rotation operation and at a stop position. Air passage opening facing the tip of the air passage adjustment member Gap is formed between the circumferential direction of the inner surface, the motor is a stepping motor, the control unit includes a drive signal for rotating the motor at a predetermined torque, a driving signal for rotating at a predetermined rotational speed, the air passage adjustment Switching is performed according to the opening degree information from the stop position of the member, and the opening degree information is a bathroom ventilation device which is the number of pulses of the input signal excited in the stepping motor.

  In the present invention, when driving of the motor is started with a drive signal that obtains a predetermined generated torque, and it is determined that the opening from the stop position of the air path adjusting member specified by the opening information has become a predetermined angle, The motor is driven by switching to a drive signal that provides a rotational speed of.

  At the start of driving of the motor, a predetermined torque that can peel off the fixing of the air path adjusting member is obtained, so that malfunction due to the fixing is prevented. In addition, when the air path adjusting member is fixed, if the motor can be detached after the start of driving the motor, the rotation speed that can open and close the air path adjusting member in a predetermined time can be obtained. An increase in the operation time of the member is suppressed.

  According to the present invention, by switching the drive signal that prioritizes the generated torque and the drive signal that prioritizes the rotation speed and controlling the air path adjusting member, it is possible to prevent the occurrence of malfunction due to the adhering of the air path adjusting member, And the increase in the operation time of an air path adjustment member can be suppressed.

It is a block diagram which shows an example 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 side view which shows an example of the air volume adjustment apparatus of this Embodiment. It is a top view which shows an example of the air volume adjustment apparatus of this Embodiment. It is a side view which shows an example of the air volume adjustment apparatus of the modification of this Embodiment. It is a functional block diagram which shows an example of the control function of the ventilation apparatus of this Embodiment.

Hereinafter, with reference to the accompanying drawings, illustrating the embodiments of the bathroom ventilating equipment of the present invention.

<Configuration example of ventilation device of the present embodiment>
FIG. 1 is a configuration diagram illustrating an example of a ventilator according to the present embodiment, and FIG. 2 is a configuration diagram illustrating an example of installation of the ventilator according to the present embodiment. As an example of the ventilator according to the present embodiment, a bathroom A ventilation drying / heating apparatus will be described.

  In this example, the ventilation device 1A is a bathroom ventilation drying and heating device installed in the bathroom 100, and includes a circulation fan 11 that sucks and circulates air and a ventilation fan 12 that sucks and exhausts air. The circulation fan 11 is an example of a blowing unit, and is attached to the circulation fan motor 11M with the direction of the rotation axis as a vertical direction, and is disposed in a circulation fan case 11a that forms an air passage along a tangential direction of the circulation fan 11.

  On the lower surface of the main body 10, a circulation fan suction port 11 b is formed on the lower surface of the circulation fan case 11 a along the axial direction of the circulation fan 11, and the circulation fan outlet is connected to the air path along the tangential direction of the circulation fan 11. 11c is formed.

  When the circulation fan 11 is rotationally driven by the circulation fan motor 11M, air is sucked from the circulation fan suction port 11b, and the air sucked from the circulation fan suction port 11b is blown out from the circulation fan outlet 11c.

  The ventilation device 1A includes a heater 10H. The heater 10H is an example of a heating unit. For example, a PTC heater is used, and is attached near the circulation fan outlet 11c. Thus, when the circulation fan 11 is rotationally driven and the heater 10H is energized, warm air is blown out from the circulation fan outlet 11c.

  The ventilation fan 12 is an example of a blowing unit, and is attached to the ventilation fan motor 12M with the direction of the rotation axis as a vertical direction, and is disposed in a ventilation fan case 12a that forms an air passage along the tangential direction of the ventilation fan 12.

  A ventilation fan inlet 12b is formed on the upper surface of the ventilation fan case 12a along the axial direction of the ventilation fan 12, and an air path along the tangential direction of the ventilation fan 12 is formed on the side surface of the ventilation fan case 12a. A connected ventilation fan outlet 12c is formed.

  When the ventilation fan 12 is rotationally driven by the ventilation fan motor 12M, air is sucked from the ventilation fan suction port 12b, and the air sucked from the ventilation fan suction port 12b is blown out from the ventilation fan outlet 12c.

  The main body 10 of the ventilation device 1A includes a main body case 13 in which a circulation fan case 11a and a ventilation fan case 12a are accommodated. The main body case 13 is made of, for example, a metal such as iron, and is attached in a form in which the ventilation fan case 12a overlaps the upper side of the circulation fan case 11a.

  In the ventilation device 1A, an exhaust port 13EA connected to the ventilation fan outlet 12c is formed on one side surface of the main body case 13, and an exhaust duct joint 14EA is attached to the exhaust port 13EA.

  Further, the ventilation device 1A is connected to the other side surface of the main body case 13 on the inside of the main body case 13 with one ventilation air passage formed on the circulation fan case 11a and the upper side of the ventilation fan case 12a. Two sub suction ports 13BA are formed, and the sub suction duct joint 14BA is attached to the sub suction port 13BA.

  The ventilation device 1A has a ventilation air inlet 15EA connected to the ventilation fan air inlet 12b on the lower surface of the main body 10 by an air passage formed on the side of the ventilation fan case 12a, and the air volume that opens and closes the air inlet 15EA. An adjustment device 16 is provided.

  The air volume adjusting device 16 includes a suction opening / closing damper 16EA that opens and closes the ventilation suction opening 15EA, and a damper motor 16M that drives the suction opening / closing damper 16EA. The suction opening / closing damper 16EA is an example of an air path adjusting member, and is driven by a damper motor 16M configured by a stepping motor to open / close the ventilation suction opening 15EA and close the suction opening / closing damper 16EA from the bathroom 100 shown in FIG. Air suction is stopped. Moreover, the amount of air sucked from the bathroom 100 is adjusted by adjusting the opening of the suction opening / closing damper 16EA.

  In the ventilator 1 </ b> A, a front panel 17 is detachably attached to the lower surface of the main body 10. The front panel 17 is formed with an inlet grille 17a facing the circulation fan inlet 11b and the ventilation inlet 15EA, and formed with an outlet grille 17b facing the circulation fan outlet 11c.

  As shown in FIG. 2, the ventilator 1 </ b> A is configured such that the front panel 17 attached to the main body 10 is exposed to the ceiling panel 101 of the bathroom 100, and the main body 10 is installed on the ceiling panel 101.

  Further, in the ventilation device 1A, an exhaust duct 18EA is connected to the exhaust duct joint 14EA. Further, in the ventilator 5, the sub suction duct 18BA is connected to the sub suction duct joint 14BA.

  In the ventilator 1A, an outdoor grill 19EA connected to the exhaust duct 18EA is installed on the outer wall of a building (not shown). Further, in the ventilation device 1A, a sub suction grille 19BA connected to the sub suction duct 18BA is installed in the washroom undressing room 110 adjacent to the bathroom 100. A sub-suction grill connected to the sub-suction duct may be installed in another room (not shown) such as a toilet.

<Configuration example of the air volume adjusting device of the present embodiment>
FIG. 3 is a side view showing an example of the air volume adjusting device of the present embodiment, and FIG. 4 is a plan view showing an example of the air volume adjusting device of the present embodiment. Next, the air volume attached to the ventilation device 1A Details of the adjusting device will be described.

  The air volume adjusting device 16A of the present embodiment includes a ventilation suction port 15EA through which air passes, a suction port opening / closing damper 16EA that opens and closes the ventilation suction port 15EA, and a damper driving unit 20A that drives the suction port opening / closing damper 16EA. The ventilation inlet 15EA is an example of an air passage opening, and is configured by forming an opening of a predetermined shape in the damper frame 30A.

  The damper frame 30A includes an air passage forming frame portion 31A in which the ventilation suction port 15EA is formed, and a mounting portion 32A in which the damper driving unit 20A is mounted. The damper frame 30A is configured by a part integrally molded with a predetermined resin material or a combination of parts molded with a predetermined resin material.

  The air passage forming frame portion 31A has a predetermined height along the direction in which air passes, and the ventilation inlet 15EA is formed in a space surrounded by the air passage forming frame portion 31A. The mounting portion 32A is configured by providing a space independent of the ventilation suction port 15EA on one outer side of the first side surface portion 33 facing the air passage forming frame portion 31A.

  The inlet opening / closing damper 16EA is configured by a flat plate-like component that matches the shape of the ventilation inlet 15EA. The suction opening / closing damper 16EA is configured by a part integrally molded with a predetermined resin material or a combination of parts molded with a predetermined resin material.

  The suction opening / closing damper 16EA includes a shaft 16a serving as a fulcrum for the operation of opening and closing the ventilation suction opening 15EA. The suction port opening / closing damper 16EA has a shaft 16a supported by a bearing portion 34 formed on the opposing first side surface portion 33 of the damper frame 30A, and opens and closes the ventilation suction port 15EA by a rotation operation with the shaft 16a as a fulcrum.

  The damper drive unit 20A includes a damper motor 16M, a drive gear 21 attached to the drive shaft of the damper motor 16M, and a damper gear 22 attached to the shaft 16a of the inlet opening / closing damper 16EA. The damper motor 16M is attached to the mounting portion 32A of the damper frame 30A.

  The damper gear 22 is attached to one shaft 16 a of the suction opening / closing damper 16 </ b> EA projecting from the mounting portion 32 </ b> A, and meshes with the drive gear 21. The damper gear 22 is a gear having a large diameter and a large number of teeth with respect to the drive gear 21, and is configured to obtain a predetermined reduction ratio by a combination of the drive gear 21 and the damper gear 22. The damper gear 22 is configured by a part of a semicircular arc or the like corresponding to the rotational operation angle of the suction opening / closing damper 16EA, so that the occupation area can be reduced.

  When the damper motor 16M rotates, the driving force of the damper motor 16M is transmitted to the damper gear 22, and the inlet opening / closing damper 16EA rotates about the shaft 16a. As a result, the ventilation inlet 15EA is opened and closed by the rotational operation of the inlet opening / closing damper 16EA from the closed position where the ventilation inlet 15EA is closed by the inlet opening / closing damper 16EA to the open position where the ventilation inlet 15EA is opened.

  The air volume adjusting device 16 </ b> A includes a mounting protrusion 25 </ b> A provided with a butting protrusion 25 against which the butting section 23 formed on the damper gear 22 is abutted. The abutting projection 25 is an example of a position restricting portion, and is formed at a position where the abutting portion 23 of the damper gear 22 is abutted when the suction port opening / closing damper 16EA is rotated to the closed position where the ventilation suction port 15EA is closed. Thereby, the position of the suction opening / closing damper 16EA rotated to the closed position is regulated.

<Modification of the air volume adjusting device of the present embodiment>
FIG. 5 is a side view showing an example of an air volume adjusting device according to a modification of the present embodiment. The air volume adjusting device 16B of the modification of the present embodiment is arranged in parallel with the first suction opening / closing damper 16EA1 that opens and closes the ventilation suction opening 15EA and the first suction opening / closing damper 16EA1, and the ventilation suction opening 15EA. A second suction port opening / closing damper 16EA2 that opens and closes the first suction port, and a damper driving unit 20B that drives the first suction port opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2.

  The damper frame 30B includes an air passage forming frame portion 31B in which the ventilation suction port 15EA is formed and a mounting portion 32B in which the damper driving unit 20B is mounted. The damper frame 30B is configured by a part integrally molded with a predetermined resin material or a combination of parts molded with a predetermined resin material.

  The air passage forming frame portion 31B has a predetermined height along the direction in which air passes, and the ventilation suction port 15EA is formed in a space surrounded by the air passage forming frame portion 31B. The mounting portion 32B is configured by providing a space independent of the ventilation suction port 15EA outside the side surface portion of the air passage forming frame portion 31B.

  The first suction opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 are an example of an air path adjusting member, and are configured by flat plate-like components that are matched with the shape of the ventilation suction opening 15EA by two dampers. The first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 are configured by a part integrally molded with a predetermined resin material or a combination of parts molded with a predetermined resin material.

  The first suction opening / closing damper 16EA1 includes a shaft 16a serving as a fulcrum for the operation of opening and closing the ventilation suction opening 15EA. The first suction port opening / closing damper 16EA1 has a shaft 16a supported by a bearing portion formed on the opposing side surface portion of the damper frame 30B, and opens and closes the ventilation suction port 15EA by a rotation operation using the shaft 16a as a fulcrum.

  The second suction opening / closing damper 16EA2 includes a shaft 16b serving as a fulcrum for the operation of opening / closing the ventilation suction opening 15EA. The second suction port opening / closing damper 16EA2 has a shaft 16b supported by a bearing portion formed on the opposing side surface portion of the damper frame 30B, and opens and closes the ventilation suction port 15EA by a rotating operation using the shaft 16b as a fulcrum.

  The damper drive unit 20B includes a damper motor 16M, a drive gear 21 attached to the drive shaft of the damper motor 16M, a first damper gear 22A attached to the shaft 16a of the first suction opening / closing damper 16EA1, and a second suction. A second damper gear 22B attached to the shaft 16b of the opening / closing damper 16EA2 is provided. The damper motor 16M is attached to the mounting portion 32B of the damper frame 30B.

  The first damper gear 22 </ b> A is attached to one shaft 16 a of the first suction opening / closing damper 16 </ b> EA <b> 1 protruding from the mounting portion 32 </ b> B and meshes with the drive gear 21. The first damper gear 22A is a gear having a large diameter and a large number of teeth with respect to the drive gear 21, and is configured to obtain a predetermined reduction ratio by a combination of the drive gear 21 and the first damper gear 22A. The first damper gear 22A is configured by a part of a semicircular arc or the like corresponding to the rotational operation angle of the first inlet opening / closing damper 16EA1, and the occupied area can be reduced.

  The second damper gear 22B is attached to one shaft 16b of the second inlet opening / closing damper 16EA2 protruding from the mounting portion 32B, and meshes with the first damper gear 22A. The second damper gear 22B is a gear having the same diameter and the same number of teeth as the first damper gear 22A, and is configured to reverse the rotation direction by a combination of the first damper gear 22A and the second damper gear 22B. The second damper gear 22B is configured by a part of a semicircular arc or the like corresponding to the rotational operation angle of the second suction opening / closing damper 16EA2, and the occupied area can be reduced.

  When the damper motor 16M rotates, the driving force of the damper motor 16M is transmitted to the first damper gear 22A, and the first inlet opening / closing damper 16EA1 rotates about the shaft 16a. Further, when the first damper gear 22A rotates, the driving force of the damper motor 16M is transmitted to the second damper gear 22B via the first damper gear 22A, and the second inlet opening / closing damper 16EA2 uses the shaft 16b as a fulcrum. Rotate.

  Accordingly, the first suction port opening / closing damper 16EA1 and the first suction port opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2 from the closed position to close the ventilation suction port 15EA to the open position to open the ventilation suction port 15EA, and The ventilation suction port 15EA is opened and closed by the rotating operation of the second suction port opening / closing damper 16EA2 in the opposite reverse direction.

  The air volume adjusting device 16B includes an abutment protrusion 25 on the mounting part 32B, against which the abutment part 23 formed on the first damper gear 22A is abutted. When the first suction port opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2 are rotated to the closed position where the ventilation suction port 15EA is closed, the butting projection portion 25 is pushed by the butting portion 23 of the first damper gear 22A. It is formed at the position where it is applied. Thereby, the positions of the first suction opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 rotated to the closed position are restricted.

<Control function example of ventilator>
FIG. 6 is a functional block diagram illustrating an example of a control function of the ventilation device of the present embodiment. In the ventilation device 1A, a circulation fan motor 11M that drives the circulation fan 11 described in FIG. 1 and a ventilation fan motor 12M that drives the ventilation fan 12 are connected to a control unit 51 that includes a CPU, a memory, and the like. Also, a suction port opening / closing damper 16EA of the air volume adjusting device 16A, a damper motor 16M that drives the first suction opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2 of the air volume adjusting device 16B, a heater 10H, and an operation unit 52. Etc. are connected.

  The control unit 51 is an example of a control unit, and executes, for example, a heating operation mode, a ventilation operation mode, a drying operation mode, and a cool air operation mode by a program stored in a memory (not shown) or the like.

  These operation modes are selected, for example, when a user such as a bather operates the operation unit 52 which is a remote control device independent of the main body of the bathroom air conditioner 1, and the control unit 51 selects the selected operation mode. The circulation fan motor 11M, the ventilation fan motor 12M, the damper motor 16M, the heater 10H and the like are controlled according to the program to be executed.

  In the control for opening and closing the suction port opening / closing damper 16EA of the air volume adjusting device 16A or the first suction port opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2 of the air volume adjusting device 16B, the control unit 51 controls the suction port opening / closing damper 16EA. In accordance with the opening degree information from the stop position, etc., control is performed to switch the generated torque and the rotational speed of the damper motor 16M.

  In other words, the control unit 51 switches between the first drive signal for obtaining a predetermined generated torque by the damper motor 16M and the second drive signal for obtaining a predetermined rotation speed, so that the inlet opening / closing damper 16EA of the air volume adjusting device 16A is switched. Alternatively, the opening / closing control of the first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 of the air volume adjusting device 16B is performed.

  The damper motor 16M is a stepping motor, and the generated torque and the rotational speed are controlled by the frequency of the input signal. When the frequency of the input signal is low, the damper motor 16M has a large generated torque and a low rotational speed. Further, when the frequency of the input signal is high, the rotation speed is large and the generated torque is small.

  Therefore, the first drive signal is an input signal having a frequency lower than that of the second drive signal. For example, the frequency of the first drive signal is 100 pps, and the frequency of the second drive signal is 200 pps. Moreover, the control part 51 is the opening number information which switches a drive signal, and is the number of pulses of the input signal excited to the damper motor 16M, and the inlet opening / closing damper 16EA of the air volume adjusting device 16A or the first air inlet of the air volume adjusting device 16B The opening degree from the stop position of the opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 is determined.

  Then, the controller 51 starts driving the damper motor 16M with the first drive signal, and based on the number of pulses of the input signal excited to the damper motor 16M, the opening from the stop position of the inlet opening / closing damper 16EA and the like is a predetermined angle. When it is determined that the motor has reached the second drive signal, the damper motor 16M is driven.

<Operation example of the ventilation device of the present embodiment>
Next, with reference to each figure, the operation example of the ventilation apparatus and air volume adjustment apparatus of this Embodiment is demonstrated. The ventilation device 1A sucks air into the main body 10 from the front panel 17, functions to blow out the sucked air from the front panel 17, functions to heat air blown from the front panel 17, and from the front panel 17 and the sub suction grille 19BA. The air sucked into the main body 10 through the sub suction duct 18BA is blown out to the exhaust duct 18EA.

  Thereby, 1 A of ventilation apparatuses suck | inhale the air of the bathroom 100 from the front panel 17 to the main-body part 10, and energize the heater 10H and blow off the heated air from the front panel 17 to the bathroom 100, thereby giving warm air to the bathroom 100. The heating mode which blows out is performed.

  In addition, the ventilation device 1A passes the air in the bathroom 100 sucked into the main body 10 from the front panel 17 and the air in the other room sucked into the main body 10 from the sub suction grill 19BA through the sub suction duct 18BA through the exhaust duct 18EA. By exhausting the outdoor grill 19EA to the outside, a ventilation mode for exhausting air from the bathroom 100 or the like is executed.

  Furthermore, the ventilator 1A circulates the air in the bathroom 100, energizes the heater 10H and blows out warm air, and exhausts the air in the bathroom 100. A drying mode for drying is executed. Moreover, the cool air mode which cools the time of bathing etc. in summer is performed by performing the operation | movement which exhausts the air in the bathroom 100, circulating the air in the bathroom 100, without energizing the heater 10H.

  In the heating mode, the heater 10H is energized and the circulation fan motor 11M is driven. Further, the suction opening / closing damper 16EA of the air flow adjusting device 16A or the first suction opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 of the air flow adjusting device 16B are moved to the closed position to close the ventilation suction opening 15EA. The ventilation fan motor 12M is driven.

  In the operation of closing the inlet opening / closing damper 16EA of the air volume adjusting device 16A or the first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 of the air volume adjusting device 16B, the control unit 51 uses the first drive signal. The drive of the damper motor 16M is started.

  When the controller 51 determines from the number of pulses of the input signal excited to the damper motor 16M that the opening from the stop position of the suction opening / closing damper 16EA and the like has reached a predetermined angle, the controller 51 switches to the second drive signal and switches the damper motor 16M. Drive. When the control unit 51 determines that the suction opening / closing damper 16EA and the like have moved to the closed position from the number of pulses of the input signal excited in the damper motor 16M, the control unit 51 stops driving the damper motor 16M.

  As a result, the air in the bathroom 100 is sucked in by the circulation fan 11 from the suction grill 17a of the front panel 17, and the air sucked in by the circulation fan 11 is heated by the heater 10H, from the blowout grill 17b of the front panel 17. Hot air is blown out into the bathroom 100.

  Further, air from the other room is sucked by the ventilation fan 12 through the sub suction duct 18BA from the sub suction grill 19BA installed in the wash-dressing room 110, and is exhausted from the outdoor grill 19EA through the exhaust duct 18EA.

  In the heating mode, the ventilation inlet 15EA is closed by the inlet opening / closing damper 16EA of the air volume adjusting device 16A or the first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 of the air volume adjusting device 16B. From the inlet grille 17a of the front panel 17, the air in the bathroom 100 is not sucked by the ventilation fan 12, and the heated air in the bathroom 100 is prevented from being exhausted.

  In the ventilation mode, the inlet opening / closing damper 16EA of the air volume adjusting device 16A, or the first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 of the air volume adjusting device 16B are moved to the open position to open the ventilation inlet 15EA. Open and drive the ventilation fan motor 12M. Circulation fan motor 11M is not driven.

  In the operation of opening the inlet opening / closing damper 16EA of the air volume adjusting device 16A, or the first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 of the air volume adjusting device 16B, the control unit 51 uses the first drive signal. The drive of the damper motor 16M is started.

  When the controller 51 determines from the number of pulses of the input signal excited to the damper motor 16M that the opening from the stop position of the suction opening / closing damper 16EA and the like has reached a predetermined angle, the controller 51 switches to the second drive signal and switches the damper motor 16M. Drive. When the control unit 51 determines that the suction opening / closing damper 16EA and the like have moved to a predetermined closed position from the number of pulses of the input signal excited in the damper motor 16M, the control unit 51 stops driving the damper motor 16M.

  Thereby, the air in the bathroom 100 is sucked in by the ventilation fan 12 from the suction grill 17a of the front panel 17, and is exhausted from the outdoor grill 19EA to the outside through the exhaust duct 18EA. Further, the air in the other room is sucked in by the ventilation fan 12 from the sub suction grille 19BA through the sub suction duct 18BA, and exhausted to the outdoors from the outdoor grill 19EA through the exhaust duct 18EA.

  In the dry mode, the heater 10H is energized and the circulation fan motor 11M is driven. In addition, the suction port opening / closing damper 16EA of the air volume adjusting device 16A or the first suction opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2 of the air volume adjusting device 16B are moved to the open position by the same control as that in the ventilation mode. The suction port 15EA is opened and the ventilation fan motor 12M is driven.

  As a result, the air in the bathroom 100 is sucked in by the circulation fan 11 from the suction grill 17a of the front panel 17, and the air sucked in by the circulation fan 11 is heated by the heater 10H, from the blowout grill 17b of the front panel 17. Hot air is blown out into the bathroom 100.

  Further, the air in the bathroom 100 is sucked in by the ventilation fan 12 from the suction grill 17a of the front panel 17, and is exhausted from the outdoor grill 19EA to the outside through the exhaust duct 18EA. Further, air from the other room is sucked by the ventilation fan 12 through the sub suction duct 18BA from the sub suction grill 19BA installed in the bathroom undressing room 110, and exhausted from the outdoor grill 19EA through the exhaust duct 18EA.

  In the cool air mode, the circulation fan motor 11M is driven without energizing the heater 10H. In addition, the suction port opening / closing damper 16EA of the air volume adjusting device 16A or the first suction opening / closing damper 16EA1 and the second suction port opening / closing damper 16EA2 of the air volume adjusting device 16B are moved to the open position by the same control as that in the ventilation mode. The suction port 15EA is opened and the ventilation fan motor 12M is driven.

  As a result, the air in the bathroom 100 is sucked by the circulation fan 11 from the suction grill 17a of the front panel 17, and the air sucked by the circulation fan 11 is blown out from the blowout grill 17b of the front panel 17 to the bathroom 100.

  Further, the air in the bathroom 100 is sucked in by the ventilation fan 12 from the suction grill 17a of the front panel 17, and is exhausted from the outdoor grill 19EA to the outside through the exhaust duct 18EA. Further, air from the other room is sucked by the ventilation fan 12 through the sub suction duct 18BA from the sub suction grill 19BA installed in the bathroom undressing room 110, and exhausted from the outdoor grill 19EA through the exhaust duct 18EA.

  Now, in the ventilation mode, the drying mode, and the cool air mode described above, the inlet opening / closing damper 16EA of the air volume adjusting device 16A, or the first inlet opening / closing damper 16EA1 and the second inlet opening / closing damper 16EA2 of the air volume adjusting device 16B are opened. By moving to a position and opening the ventilation inlet 15EA, the air in the bathroom 100 is sucked from the ventilation inlet 15EA.

  Thereby, the air containing moisture is sucked from the ventilation suction port 15EA. Moreover, when a bath agent, a hair spray, etc. are used in the bathroom 100 or the wash-dressing room 110, the air containing the component is inhaled from the ventilation inlet 15EA.

  When air containing moisture or the like is sucked from the ventilation suction port 15EA, the shaft 16a of the suction port opening / closing damper 16EA, the shafts 16a, 16b of the first suction port opening / closing damper 16EA1, and the second suction port opening / closing damper 16EA2, or the suction port Chalk or adhesive components adhere to the gap between the opening / closing damper 16EA or the first suction opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 and the ventilation suction opening 15EA, and the suction opening / closing damper 16EA, Alternatively, the first suction opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 may be fixed at the stop position.

  Therefore, in the control for opening / closing the suction opening / closing damper 16EA of the stopped air volume adjusting device 16A or the first suction opening / closing damper 16EA1 and the second suction opening / closing damper 16EA2 of the air volume adjusting device 16B, the control unit 51 is The drive of the damper motor 16M is started by a first drive signal that can obtain a predetermined generated torque.

  The first drive signal is an input signal having a frequency lower than that of the second drive signal, and the torque generated by the damper motor 16M is increased. Thereby, when driving of the damper motor 16M is started by the first drive signal, even when the suction opening / closing damper 16EA or the like is fixed at the stop position, the fixing can be peeled and the suction opening / closing damper 16EA or the like can be moved. .

  Further, the suction opening / closing damper 16EA or the like is not directly attached to the drive shaft of the damper motor 16M, but a predetermined reduction ratio is obtained by a combination of the driving gear 21 of the damper motor 16M and the damper gear 22 of the suction opening / closing damper 16EA. As a result, the torque generated by the damper motor 16M can be amplified and the suction opening / closing damper 16EA can be rotated with a larger operating torque, so that it can be reliably peeled off when the sticking occurs.

  On the other hand, when the damper motor 16M is driven by the first drive signal, the rotational speed is lowered, and therefore the time required for opening and closing the suction opening / closing damper 16EA and the like becomes longer. Therefore, in consideration of the opening from the stop position where the suction opening / closing damper 16EA and the like can be peeled off, the second drive that obtains a predetermined rotational speed from the first drive signal that provides a predetermined generated torque. The switching angle of the drive signal switched to the signal is set as the opening degree information.

  The second drive signal is an input signal having a frequency higher than that of the first drive signal, and the rotational speed of the damper motor 16M is increased. Accordingly, when it is determined that the opening from the stop position of the suction opening / closing damper 16EA or the like has reached the switching angle of the driving signal, the first driving signal is switched to the second driving signal to drive the damper motor 16M. Compared with the operation driven at, the rotational speed of the damper motor 16M is increased, and the inlet opening / closing damper 16EA and the like can be moved at a high speed.

  Therefore, the time required for opening and closing the inlet opening / closing damper 16EA and the like can be reliably peeled off when the sticking occurs without significantly increasing the time required for the opening and closing. In a ventilation device 1A such as a bathroom ventilation drying / heating device installed in the bathroom 100, when a bather or the like operates the operation unit 52 to switch the exercise mode, it takes a long time to open and close the suction opening / closing damper 16EA and the like. The time from the operation to the start of operation becomes longer.

  For this reason, by switching the first drive signal giving priority to torque and the second drive signal giving priority to the rotation speed and driving the damper motor 16M, it is possible to securely remove the adhering, while the suction opening / closing damper 16EA, etc. An increase in waiting time for bathers and the like can be prevented by preventing the time required for opening and closing from becoming long.

  Here, control of gradually increasing the frequency of the input signal to the second drive signal after starting the drive of the damper motor 16M with the first drive signal is conceivable. However, since the generated torque gradually decreases, the opening and closing of the suction port In some cases, the damper 16EA or the like cannot be peeled off.

  For this reason, after starting the drive of the damper motor 16M with the first drive signal, the frequency of the input signal is kept constant until the opening from the stop position of the suction opening / closing damper 16EA, etc. reaches the drive signal switching angle. The predetermined generated torque is obtained, and the peeling of the sticking is promoted.

  Since the damper motor 21M is a stepping motor, the control unit 51 determines the opening from the stop position of the inlet opening / closing damper 16EA and the like based on the number of pulses of the input signal excited to the damper motor 16M. In this example, the number of pulses of the input signal for rotating the suction opening / closing damper 16EA and the like by 10 ° is set as the drive signal switching angle.

  However, when the suction opening / closing damper 16EA is fixed, the number of pulses of the input signal may not be proportional to the actual angle of the suction opening / closing damper 16EA and the like. Therefore, the opening degree information that is the switching angle of the drive signal may not represent the actual angle of the suction opening / closing damper 16EA and the like.

  On the other hand, in a configuration in which a rotary encoder is provided in the rotating part of a damper motor or the like and the rotation angle can be detected, the actual operating angle of the inlet opening / closing damper 16EA or the like is detected as opening information and used for switching the drive signal. May be.

  Further, as the opening degree information, it may be determined over time that the opening degree from the stop position of the suction opening / closing damper 16EA or the like becomes the switching angle of the drive signal. Further, position information other than the angle may be detected by a sensor or the like.

  The present invention is applied to a ventilator that is provided with a damper that can be opened and closed at an air suction port, and that is installed in a place where the sucked air contains a sticky or sticking component.

  DESCRIPTION OF SYMBOLS 1A ... Ventilator, 11 ... Circulation fan, 12 ... Ventilation fan, 15EA ... Ventilation suction inlet, 16EA ... Suction inlet opening / closing damper, 16M ... Damper motor, 51 ... Control part

Claims (3)

A suction port where the air in the bathroom is sucked in,
An outlet from which the bathroom air sucked from the inlet is blown out;
Blowing means for sucking in the bathroom air from the suction port, and blowing out the bathroom air sucked in from the suction port from the air outlet;
An air volume adjusting device having an air passage opening in the suction port through which the bathroom air sucked in by the blowing means passes;
A control unit for controlling the air blowing means and the air volume adjusting device;
The air volume adjusting device is provided at the air passage opening of the suction port, and the opening degree is adjusted by a rotating operation, and the air flow adjusting device is closed between the air passage opening and the air passage opening. An air path adjusting member in which a gap is formed;
A drive unit having a motor for driving the air path adjusting member ;
The air path adjustment member has a gap between a front end portion in a direction orthogonal to the axis of rotation and a circumferential inner surface of the air path opening portion facing the front end portion of the air path adjustment member at a stop position. Formed,
The motor is a stepping motor,
The control unit switches between a drive signal for rotating the motor at a predetermined generated torque and a drive signal for rotating at a predetermined rotation speed according to opening information from the stop position of the air path adjustment member,
The opening information, bathroom ventilating device, wherein the a number of pulses of the input signal is excited to the stepping motor. The control unit starts driving the motor with a drive signal with a low input signal frequency and a predetermined generated torque compared to a drive signal that obtains a predetermined rotation speed, and responds to the opening information. The bathroom ventilator according to claim 1, wherein the motor is driven by switching to a second drive signal that provides a predetermined rotational speed. The drive unit includes a drive gear attached to the shaft of the motor;
A drive gear attached to the shaft of the motor; and a drive gear attached to the shaft of the motor.
The bathroom ventilation apparatus according to claim 1 or 2, wherein

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