JP6714161B2 - Bathroom Dryer - Google Patents

Description

The present invention relates to a bathroom dryer including a damper that switches an air passage.

In the bathroom dryer, a stepping motor is used to rotate and move the damper that switches the air passage. See for example US Pat.

Patent No. 5655368

The damper of the bathroom dryer not only switches the air passage in each operation mode during heating, drying and ventilation, but also has the function of a shutter that suppresses the outside air from entering the bathroom dryer when the bathroom dryer is not operating. It is preferable. When functioning as a shutter, a voltage is applied to the stepping motor to hold the damper at the position where the ventilation air passage is closed. If the same voltage as when driving the damper is applied to the stepping motor when the damper is held at the position where the ventilation air passage is closed, the stepping motor generates heat equivalent to that when the bathroom dryer is operating, and the heat causes the stepping motor to be heated. There is a risk that the grease and the resin inside will deteriorate and the life of the stepping motor will be shortened.

The present invention has been made in view of the above, and an object thereof is to obtain a bathroom dryer capable of extending the life of the bathroom dryer by reducing the heat generation of the motor.

In order to solve the above-mentioned problems and to achieve the object, a bathroom dryer according to the present invention has an intake port for sucking air in the bathroom, and the bathroom air sucked from the intake port is blown into the bathroom. A circulation air passage that connects the circulation outlet in the bathroom and the intake, an outside air outlet that blows the bathroom air sucked from the intake to the outside of the bathroom, and a ventilation air passage that connects the intake. An air blower for sucking air in the bathroom from the intake port and guiding the air in the bathroom sucked from the intake port to the circulation outlet in the bathroom or the air outlet outside the bathroom. Further, the bathroom dryer has a rotary damper whose opening degree is adjusted by a rotating operation to open and close the outside air outlet of the bathroom at a position in a range from a first position where the circulation air passage is closed to a second position where the ventilation air passage is closed. , A voltage that is set by selecting the applied voltage value corresponding to the operation mode of the air blower from a plurality of different preset voltage values in conjunction with the switching of the operation mode of the air blower and the motor that changes the opening of the rotary damper. A setting unit and a motor drive control unit that controls the drive of the motor by applying a voltage to the motor according to the applied voltage value set by the voltage setting unit. The plurality of different voltage values are a first voltage value that causes the motor to generate a first torque for rotating the rotary damper to a position in the range from the first position to the second position, and a voltage lower than the first voltage value. A second voltage value that causes the motor to generate a second torque for holding the rotary damper in the second position. The voltage setting unit increases and sets at least one of the first voltage value and the second voltage value based on the integrated energization time obtained by accumulating the energization time to the motor.

INDUSTRIAL APPLICABILITY The bathroom dryer according to the present invention has an effect of reducing the heat generation of the motor, thereby obtaining a bathroom dryer capable of extending the life of the bathroom dryer.

Sectional drawing which shows the structure of the main body of the bathroom dryer concerning Embodiment 1 of this invention. It is a figure which shows the structure of the main body of the bathroom dryer concerning Embodiment 1 of this invention, and is a figure which notches a part of side surface and shows a stepping motor. The schematic diagram which shows the installation example of the bathroom dryer concerning Embodiment 1 of this invention. The perspective view which shows the external appearance which looked at the bathroom dryer concerning Embodiment 1 of this invention from the lower side which is the bathroom side. The figure which shows the function structure of the bathroom dryer concerning Embodiment 1 of this invention. The figure which shows an example of the hardware constitutions of the processing circuit in Embodiment 1 of this invention. Sectional drawing which shows the position of the damper at the time of ventilation operation of the bathroom dryer concerning Embodiment 1 of this invention. Sectional drawing which shows the position of the damper at the time of heating operation and operation stop of the bathroom dryer concerning Embodiment 1 of this invention. Sectional drawing which shows the position of the damper at the time of the drying operation of the bathroom dryer concerning Embodiment 1 of this invention. The figure which shows an example of the position of the rotary damper and the applied voltage value applied to a stepping motor at the time of switching the driving mode from operation stop of the bathroom dryer concerning this Embodiment 1 to ventilation operation. The flowchart which shows the control procedure of the stepping motor at the time of switching the driving mode from operation stop of the bathroom dryer concerning Embodiment 1 of this invention to ventilation operation. The figure which shows an example of the position of the rotary damper and the applied voltage value applied to a stepping motor at the time of switching the driving mode from ventilation operation of the bathroom dryer to operation stop state concerning Embodiment 1 of this invention. The flowchart which shows the control procedure of the stepping motor at the time of switching the driving mode from the ventilation driving|running of the bathroom dryer concerning Embodiment 1 of this invention to the driving|operation stop state. The figure which shows the example of a change of the set value of the applied voltage value applied to a stepping motor corresponding to aged deterioration in the bathroom dryer concerning Embodiment 1 of this invention.

Hereinafter, a bathroom dryer according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a sectional view showing a configuration of a main body 21 of a bathroom dryer 100 according to the first embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the main body 21 of the bathroom dryer 100 according to the first embodiment of the present invention, and is a diagram showing the stepping motor 13 with a part of the side surface cut away. FIG. 3 is a schematic diagram showing an installation example of the bathroom dryer 100 according to the first embodiment of the present invention. FIG. 4 is a perspective view showing an external appearance of the bathroom dryer 100 according to the first embodiment of the present invention as viewed from the lower side which is the bathroom 52 side. FIG. 5: is a figure which shows the function structure of the bathroom dryer 100 concerning Embodiment 1 of this invention. The vertical direction below is the vertical direction when the bathroom dryer 100 is installed in the bathroom 52.

The bathroom dryer 100 according to the first embodiment is a ceiling-installed bathroom dryer installed on the ceiling surface 53 of the bathroom 52. The bathroom dryer 100 includes a main body 21 and a control switch 22 that are communicatively connected by a communication line 23. The main body 21 includes a sirocco fan 2 that is a blower and a fan motor 7 that is a drive source of the sirocco fan 2 inside a main body case 1 installed on a ceiling in a bathroom. The main body case 1 includes an intake port 10 for taking in the air from the bathroom 52 into the main body case 1, and an in-bathroom circulation outlet 8 for blowing out the air blown from the sirocco fan 2 into the bathroom 52. Is provided downward when installed, that is, in the lower portion on the bathroom 52 side. By rotating the sirocco fan 2 by the fan motor 7, the air in the bathroom 52 is sucked into the main body case 1 from the intake port 10 and an airflow that blows out into the main body case 1 is generated to generate ventilation air and circulating air. ..

In the main body case 1, an exhaust duct connecting portion 5 is provided above the air passage for the air flow blown from the sirocco fan 2. On the side surface of the exhaust duct connecting portion 5, an outside-bath outlet 5a connected to the exhaust duct 51 communicating with the outside is provided.

The bathroom dryer 100 has a circulation air passage 61 formed in the main body case 1 for performing ventilation, drying and heating of the bathroom, and a ventilation air passage 62 for performing ventilation of the bathroom. The circulation air passage 61 is formed by the circulation orifice 15 that is a bottom plate that defines the air passage to the circulation outlet 8 in the bathroom and the main body case 1, and the air blown out from the sirocco fan 2 is the first outlet. This is the first air passage that advances to the circulation outlet 8 in the bathroom. The ventilation air passage 62 is a second air passage for advancing the air flow blown by the sirocco fan 2 from the circulation air passage 61 to the outside air outlet 5a of the bathroom which is the second air outlet. The airflow blown from the sirocco fan 2 flows from the circulation air passage 61 through the ventilation connection port 16 to the outdoor air outlet 5a.

Further, the bathroom dryer 100 removes dust in the air sucked into the heater 4 and the sirocco fan 2, which heats the circulating air that is the air blown out from the circulating air outlet 8 in the bathroom through the first air passage. And a filter 6. The heater 4 is arranged inside the body case 1 and above the circulating air outlet 8 in the bathroom. The heater 4 is driven by a control power source supplied from a power source section 31 described later. Further, the energization of the control power source to the heater 4 is controlled by the relay unit 17. The filter 6 is arranged between the sirocco fan 2 and the intake port 10 on the air inflow side of the sirocco fan 2.

In addition, the bathroom dryer 100 is provided with a rotary damper 3 for branching the air flow blown from the sirocco fan 2 to change the air passage inside the main body case 1, the outside air outlet 5a and the circulating air in the bathroom. Prepared on the upstream side of the outlet 8. The rotary damper 3 is arranged below the ventilation connection port 16 between the sirocco fan 2 and the heater 4 in the circulation air passage 61, and is formed in a plate shape having a convex shape on the ventilation connection port 16 side. ..

The rotary damper 3 is a rotary damper that rotates around a damper rotary shaft 14 provided at the base end, and is a drive unit that is connected to the damper rotary shaft 14 via a speed reducer that combines a plurality of gears. The opening degree is changed by rotating the motor 13, and the positioning is performed. By adjusting the opening degree of the rotary damper 3, the opening degree of the first air passage and the opening degree of the second air passage are adjusted. Further, the rotary damper 3 constitutes a part of the circulation air passage 61 and the ventilation air passage 62.

The rotary damper 3 is rotatable upward to a position where it contacts the top plate 1a of the main body case 1 and closes the ventilation connection port 16. Further, the rotary damper 3 contacts the circulation orifice 15 in the downward direction and closes the downstream side of the circulation air passage 61 so that the upstream side of the circulation air passage 61 communicates with the ventilation connection port 16 and the outside bathroom outlet 5a. It can be rotated to the position.

The lower side of the bathroom dryer 100, which is the bathroom 52 side, is covered with the design panel 11. Below the circulating air outlet 8 in the bathroom in the design panel 11, there is provided a panel circulating air outlet 12 in the bathroom for blowing out the air blown from the circulating air outlet 8 in the bathroom into the bathroom 52.

Above the fan motor 7, components related to control and power supply of the bathroom dryer 100 are arranged on the control board 9. The bathroom dryer 100 includes a power supply unit 31 as a component related to the power supply. The power supply unit 31 is connected to a commercial AC power supply, which is an external power supply 54, by a power supply line 56. The power supply unit 31 generates control power for operating each component of the bathroom dryer 100 from the AC power supplied from the external power supply 54 via the breaker 55, and each unit of the main body 21 of the bathroom dryer 100. Supply control power to. Note that, in FIG. 5, illustration of a part of the power supply line connecting the power supply unit 31 and each component is omitted.

The bathroom dryer 100 includes a first controller 32, which is a controller that controls the entire bathroom dryer 100, and a voltage value for driving the stepping motor 13, as components related to the control of the bathroom dryer 100. Both the voltage setting unit 33 to be set, the motor drive control unit 34 for controlling the drive of the stepping motor 13, the first storage unit 35 for storing information related to the control of the bathroom dryer 100, and the control switch 22. And a first communication unit 36 that performs bidirectional communication. As the first storage unit 35, a non-volatile storage device is used so that the stored information is not erased even when the energization to the bathroom dryer 100 is cut off.

The first controller 32 is a controller that controls the entire interior of the bathroom dryer 100, including control of the rotary damper 3. The first controller 32 controls the operation and stop of the bathroom dryer 100 according to the instruction information of the operation of the bathroom dryer 100 transmitted from the control switch 22. The first controller 32 controls the operation of the bathroom dryer 100, that is, a ventilation operation that discharges the air in the bathroom 52 to the outside, and a heating operation that circulates the air in the bathroom 52 and blows warm air to the bathroom 52. , And the drying operation in which hot air is blown into the bathroom 52 and air in the bathroom 52 is discharged at the same time. The first control unit 32 controls the operation of the bathroom dryer 100 by controlling the switching of the operation mode of the sirocco fan 2 and the driving of the heater 4 according to the operation instruction information transmitted from the control switch 22.

The voltage setting unit 33 interlocks with the switching of the operation mode of the sirocco fan 2 by the first control unit 32, and performs stepping from a plurality of different voltage values which are predetermined voltage values corresponding to the plurality of operation modes of the sirocco fan 2. The applied voltage value applied to the stepping motor 13 to control the driving of the motor 13 is selected and set in the voltage setting unit 33. The plurality of different voltage value candidates are individually determined for the ventilation operation, the heating operation, the drying operation, and the operation stop time, and are stored in the voltage setting unit 33 in advance. The voltage setting unit 33 may set the voltage value for driving the stepping motor 13 in the first storage unit 35.

Motor drive control unit 34, the voltage function for indicia pressure to the stepping motor 13 based on the pulse signal outputted from the pulse oscillator for detecting the driving angle of the voltage setting unit voltage value set at 33 and a stepping motor 13 Have.

The first control unit 32 is realized, for example, as a processing circuit having the hardware configuration shown in FIG. FIG. 6 is a diagram showing an example of the hardware configuration of the processing circuit according to the first embodiment of the present invention. When the first control unit 32 is realized by the processing circuit shown in FIG. 6, the first control unit 32 is realized by the processor 101 executing the program stored in the memory 102. Further, a plurality of processors and a plurality of memories may cooperate to realize the above function. Further, some of the functions of the first control unit 32 may be implemented as an electronic circuit, and the other parts may be implemented using the processor 101 and the memory 102.

Further, each of the voltage setting unit 33, the motor drive control unit 34, and the first communication unit 36 may be configured to be realized by the processor 101 similarly executing the program stored in the memory 102. Good. Also, a plurality of processors and a plurality of memories may cooperate to realize the respective functions of the voltage setting unit 33, the motor drive control unit 34, and the first communication unit 36. In addition, some of the functions of the voltage setting unit 33, the motor drive control unit 34, and the first communication unit 36 may be implemented as electronic circuits, and the other parts may be implemented using the processor 101 and the memory 102. You may

The processor and the memory for realizing one of the voltage setting unit 33, the motor drive control unit 34, and the first communication unit 36 include a first control unit 32, a voltage setting unit 33, and a motor drive control unit. It may be the same as the processor and memory that realize the other components of the unit 34 and the first communication unit 36, or may be a different processor and memory.

When disposing the bathroom dryer 100 on the ceiling surface 53 of the bathroom 52, as shown in FIG. 3, the main body case 1 is inserted from the bathroom 52 side into an opening (not shown) provided in the ceiling surface 53 of the bathroom 52. The main body case 1 is arranged in parallel with the ceiling surface 53 by pressing the flange 1b provided on the outer periphery of the lower surface of the main body case 1 against the ceiling surface 53. Then, the body case 1 is fixed to the ceiling surface 53 by screwing the flange 1b to the ceiling surface 53 of the bathroom 52. Then, the outside air outlet 5a of the bathroom is connected to the exhaust duct 51 provided in the back of the ceiling. The control board 9 is connected to the control switch 22 installed on the wall of the dressing room by a communication line 23.

The bathroom dryer 100 has a control switch 22 connected to the control board 9 via a communication line 23. The control switch 22 receives various operation commands related to the operation of the bathroom dryer 100, such as the operation mode, the operation intensity, and the timer, and transmits them to the first controller 32. The control switch 22 has, as main components, a second communication unit 41 that communicates with the main body 21 via the communication line 23 to send and receive information, an operation unit 42 that receives a setting operation, and a bathroom dryer 100. A display unit 43 that displays various kinds of information such as the operating state, a second storage unit 44 that stores information regarding the setting operation of the bathroom dryer 100, and a second control unit 45 that controls the operation of the control switch 22. doing. The second communication unit 41, the operation unit 42, the display unit 43, the second storage unit 44, and the second control unit 45 can exchange information with each other.

The second communication unit 41 performs bidirectional communication with the first communication unit 36. The second communication unit 41 receives operation instruction information for remotely controlling the operation of the bathroom dryer 100 from the second control unit 45. The second communication unit 41 transmits the received instruction information to the first communication unit 36 of the bathroom dryer 100. The second communication unit 41 also receives various types of information from the first communication unit 36 of the bathroom dryer 100. The second communication unit 41 transmits the received information to the second control unit 45.

The operation unit 42 is an interface for remotely controlling the operation of the bathroom dryer 100, and receives an instruction from the user regarding the operation of the bathroom dryer 100. In the operation unit 42, the bathroom dryer is started, such as starting the operation of the bathroom dryer 100, stopping the operation of the bathroom dryer 100, selecting the operation mode of the bathroom dryer 100, setting the operation intensity, setting the timer, and canceling the display of the filter maintenance sign. A user can arbitrarily select various functions related to the operation of the machine 100. The operation unit 42 transmits the received various information to the second control unit 45.

The display unit 43 displays various information received by the operation unit 42 and various information such as a filter maintenance sign to notify the user.

As the second storage unit 44, a non-volatile storage device is used so that the stored information is not erased even when the energization to the bathroom dryer 100 is cut off.

The second control unit 45 controls the operation of the control switch 22 based on the instruction information received from the operation unit 42. The second control unit 45 transmits the information received from the operation unit 42 to the first communication unit 36 of the bathroom dryer 100 via the second communication unit 41. In addition, the second control unit 45 controls to display various information on the display unit 43. The second control unit 45 performs control to store information regarding the control of the control switch 22 and information stored in the first storage unit 35 in the second storage unit 44.

The second control unit 45 is realized, for example, as a processing circuit having the hardware configuration shown in FIG. When the second control unit 45 is realized by the processing circuit shown in FIG. 6, the second control unit 45 is realized by the processor 101 executing the program stored in the memory 102. Further, a plurality of processors and a plurality of memories may cooperate to realize the above function. Further, some of the functions of the second control unit 45 may be implemented as an electronic circuit, and the other parts may be implemented using the processor 101 and the memory 102.

Further, the second communication unit 41 may be configured to be realized by the processor 101 similarly executing the program stored in the memory 102. In addition, a plurality of processors and a plurality of memories may cooperate to realize the function of the second communication unit 41. Further, some of the functions of the second communication unit 41 may be implemented as an electronic circuit, and the other parts may be implemented using the processor 101 and the memory 102. Further, the processor and the memory for realizing the second communication unit 41 may be the same as the processor and the memory for realizing the second control unit 45, or may be different processors and memories.

Next, the ventilation operation, the heating operation, and the drying operation of the bathroom dryer 100 according to the first embodiment will be described with reference to FIGS. 7 to 9. FIG. 7: is sectional drawing which shows the position of the damper at the time of ventilation operation of the bathroom dryer 100 concerning Embodiment 1 of this invention. FIG. 8: is sectional drawing which shows the position of the damper at the time of heating operation and operation stop of the bathroom dryer 100 concerning Embodiment 1 of this invention. FIG. 9 is a cross-sectional view showing the position of the damper during the drying operation of the bathroom dryer 100 according to the first embodiment of the present invention.

The position of the rotary damper 3 during the ventilation operation of the bathroom dryer 100 is the lowermost position of the movable range in which the rotary damper 3 is rotationally movable as shown in FIG. 7, and the lower surface of the rotary damper 3 is the circulation orifice 15. Is the first position in which the circulating air passage 61 is closed by contacting with. That is, in the ventilation operation, the rotary damper 3 rotates downward to a position where the lower surface of the rotary damper 3 contacts the circulation orifice 15, and the downstream side of the circulation air passage 61, that is, the heater 4 side is closed. Then, the circulation air passage 61 is connected to the ventilation air passage 62 through the ventilation connection port 16.

Therefore, during the ventilation operation, the air sucked from the intake port 10 forms an air passage that passes through the sirocco fan 2, the circulation air passage 61, the ventilation connection opening 16, the ventilation air passage 62, and the outdoor air outlet 5a. As a result, the air in the bathroom 52 in which the bathroom dryer 100 is installed flows in the ventilation air passage 62 through the circulation air passage 61 and is exhausted from the outside air outlet 5a to the exhaust duct 51 to ventilate the bathroom 52. To be done.

When the rotary damper 3 is in the first position, the rotary damper 3 is pressed against the circulation orifice 15 side by the weight of the rotary damper 3 and the wind pressure of the air flow flowing from the circulation air passage 61 toward the ventilation air passage 62. To be For this reason, even if the position of the rotary damper 3 is not fixed by the excitation of the stepping motor 13, the position of the rotary damper 3 is fixed to the first position. Therefore, it is not necessary to hold the rotary damper 3 in the first position by the torque of the stepping motor 13.

On the other hand, as shown in FIG. 8, the position of the rotary damper 3 when the bathroom dryer 100 is stopped and during heating operation is such that the upper surface of the rotary damper 3 contacts the top plate 1a of the main body case 1 and the ventilation air passage 62 is formed. It is the second position to close. That is, when the operation is stopped and the heating operation is performed, the rotary damper 3 rotates upward to a position where the upper surface of the rotary damper 3 contacts the top plate 1a of the main body case 1, and the ventilation connection port 16 is closed. Then, the air can flow into only the downstream side of the circulation air passage 61 leading to the circulation outlet 8 in the bathroom. Further, the heater 4 is energized during the heating operation.

During the heating operation, the air in the bathroom 52 blown from the sirocco fan 2 and flowing into the circulation air passage 61 is blown into the bathroom 52 through the heater 4. The air passing through the heater 4 is heated and blown into the bathroom 52 as warm air, so that the bathroom 52 can be heated.

When the rotary damper 3 is in the second position, it is necessary to lift and hold the rotary damper 3 at the uppermost position of the movable range. Further, the rotary damper 3 has a role as a shutter for preventing outside air from entering the room through the exhaust duct 51 and the outside bathroom outlet 5a when the bathroom dryer 100 is stopped. Therefore, the wind pressure of the outside wind flowing into the bathroom dryer 100 through the exhaust duct 51 and the outside bathroom outlet 5a can be endured, that is, the rotary damper 3 is pushed by the outside wind and does not move. It is necessary to excite the stepping motor 13 and hold the rotary damper 3 in the second position by the torque of the stepping motor 13.

Further, the position of the rotary damper 3 during the drying operation of the bathroom dryer 100 is a damper position between the first position and the second position as shown in FIG. 9, and the rotary damper 3 has the circulation orifice 15 and the main body case. The predetermined third position does not contact any of the top plates 1a. At this time, the rotary damper 3 is positioned closer to the top plate 1a than the intermediate position between the circulation orifice 15 and the top plate 1a of the main body case 1. As a result, air can flow from the ventilation connection port 16 into both the air passages on the downstream side of the circulation air passage 61 in which the heater 4 is disposed and the ventilation air passage 62. That is, when the rotary damper 3 is in the third position, the air flow blown out from the sirocco fan 2 causes the air passage on the exhaust side that exhausts the air in the bathroom 52 to the exhaust duct 51 and the air in the bathroom 52 to the bathroom. And the air passage on the circulation side for circulation to 52. Further, the heater 4 is energized during the heating operation.

When the position of the rotary damper 3 is changed from the predetermined third position during the drying operation of the bathroom dryer 100, the air volume ratio of the air flow distributed to the air passage on the exhaust side and the air passage on the circulation side is changed, or the rotary damper 3 is changed. Vibration may occur. For this reason, the stepping motor 13 is excited so that the position of the rotary damper 3 does not shift even if the wind pressure of the airflow blown from the sirocco fan 2 is received, and the torque of the stepping motor 13 causes the rotary damper 3 to move to the third position. Must be held in position.

Next, the control of the stepping motor 13 at the time of switching the operation mode from the operation stop state to the ventilation operation in the bathroom dryer 100 will be described. FIG. 10 shows an example of the position of the rotary damper 3 and the applied voltage value applied to the stepping motor 13 when the operation mode of the bathroom dryer 100 according to the first embodiment of the present invention is switched from the stop operation to the ventilation operation. FIG. In FIG. 10, the position and applied voltage value of the rotary damper 3 are shown in chronological order from the left side.

In the bathroom dryer 100, when the stepping motor 13 is driven to rotate the rotary damper 3 to a position in the range from the first position to the second position described above in conjunction with the switching of the operation mode, the stepping motor 13 The stepping motor 13 is excited by applying the voltage of the predetermined first voltage value A to the motor 13. The first voltage value is an applied voltage value that causes the stepping motor 13 to generate a first torque for rotating the rotary damper 3 at a position in the range from the first position to the second position.

Further, in the bathroom dryer 100, when the operation is stopped and the heating operation is performed, the voltage value is lower than the voltage A which is the first voltage value, and the predetermined second voltage for holding the rotary damper 3 in the second position. The stepping motor 13 is excited by applying the value of the voltage B. The second voltage value is relative to the wind pressure of the external wind flowing into the bathroom dryer 100 via the exhaust duct 51 and the bathroom outside air outlet 5a without the rotation damper 3 moving due to the weight of the rotary damper 3. The rotation damper 3 does not move, and the applied voltage value can be set to a low value within a range in which the stepping motor 13 can generate the second torque that can hold the rotation damper 3 in the second position. Further, in the bathroom dryer 100, the same effect as described above can be obtained by setting the excitation voltage to be lower than the voltage A during the heating operation.

That is, in the bathroom dryer 100, the excitation voltage for driving the stepping motor 13 during the operation stop and the heating operation is the first voltage for rotating the rotary damper 3 between the first position and the second position. It is made lower than the voltage A which is the value. Thus, Bathroom dryer 100, as compared with the case of indicia pressurizing the rotary damper 3 to the stepping motor 13 is also the same excitation voltage and the excitation voltage when the operation stop or the heating operation of the bathroom dryer 100 for rotating operation, It is possible to reduce the power consumption of the stepping motor 13 during the operation stop and the heating operation.

Further, in the bathroom dryer 100, no voltage is applied to the stepping motor 13 during the ventilation operation. That is, the applied voltage value during the ventilation operation is set to 0V. During the ventilation operation, the rotary damper 3 is located at the bottom of the movable range, and the rotary damper 3 is pressed against the circulation orifice 15 by the weight of the rotary damper 3 and the wind pressure of the air flow flowing through the ventilation air passage 62. Therefore, it is not necessary to excite the stepping motor 13 to hold the rotary damper 3 in the first position.

By not exciting the stepping motor 13 during the ventilation operation, the bathroom dryer 100 can reduce the heat generation amount of the stepping motor 13 and suppress the temperature rise of the stepping motor 13. As a result, deterioration of components such as grease and resin gears inside the stepping motor 13 due to heat generation in the stepping motor 13 can be suppressed, and the life of the stepping motor 13 can be extended. Further, the bathroom dryer 100 can reduce the power consumption of the stepping motor 13 by not exciting the stepping motor 13 during the ventilation operation.

FIG. 11 is a flowchart showing the control procedure of the stepping motor 13 when the operation mode of the bathroom dryer 100 according to the first embodiment of the present invention is switched from the operation stop to the ventilation operation.

When the bathroom dryer 100 is stopped, the applied voltage value applied to the stepping motor 13 is set to the voltage B that is the predetermined second voltage value for holding the rotary damper 3 in the second position. Therefore, the voltage of the voltage B is applied to the stepping motor 13 to excite the stepping motor 13.

Here, when the first control unit 32 receives the operation mode switching instruction information to the ventilation operation from the control switch 22, the first control unit 32 performs control to switch the operation mode of the sirocco fan 2 to the ventilation operation and the operation mode to the ventilation operation. And transmits the switching instruction information to the voltage setting unit 33.

When the voltage setting unit 33 receives the instruction to switch the operation mode to the ventilation operation in step S10, the voltage setting unit 33 causes the stepping motor 13 to interlock with the operation mode switching of the sirocco fan 2 in the first controller 32 in step S20. The applied voltage value to be applied is changed and set from the voltage B to the voltage A. The voltage setting unit 33 transmits information on the voltage A, which is the set applied voltage value, to the motor drive control unit 34.

Upon receiving the information of the voltage A, the motor drive control unit 34 applies the voltage of the voltage A to the stepping motor 13 to drive the stepping motor 13 and move the rotary damper 3 to the first position in step S30. Then, the voltage of the voltage A is applied to the stepping motor 13 while the rotary damper 3 is in the moving position from the first position to the second position.

Next, the voltage setting unit 33 determines in step S40 whether or not a predetermined time has elapsed after the position of the rotary damper 3 has reached the first position. The motor drive control unit 34 can determine that the position of the rotary damper 3 has reached the first position based on the pulse signal output from the pulse oscillator.

If the predetermined time has not elapsed and the result in step S40 is No, the process returns to step S20. That is, the voltage setting unit 33 leaves the setting of the applied voltage value applied to the stepping motor 13 at the voltage A, and transmits the information of the voltage A to the motor drive control unit 34. Then, the motor drive control unit 34 continues to apply the voltage of the voltage A to the stepping motor 13. That is, the motor drive control unit 34 changes the setting of the applied voltage value applied to the stepping motor 13 even after the rotary damper 3 reaches the first position in order to surely bring the rotary damper 3 into contact with the circulation orifice 15. Until that time, an extra voltage of the voltage A is applied to the stepping motor 13 by the predetermined number of pulses.

When the rotary damper 3 is not reliably abutted against the circulation orifice 15, there is a gap between the rotary damper 3 and the circulation orifice 15, and the rotary damper 3 vibrates due to the air blow during the ventilation operation, causing abnormal noise. It may occur. As described above, it is not necessary to excite the stepping motor 13 to hold the rotary damper 3 in the first position. However, even after the position of the rotary damper 3 reaches the first position, the voltage of the voltage A is continuously applied to the stepping motor 13 and the stepping motor 13 is excited until a certain time elapses, so that the rotary damper 3 is reliably driven. It can be in a state of abutting against the circulation orifice 15. Accordingly, when changing the applied voltage applied to the stepping motor 13, the excitation voltage of the stepping motor 13 can be changed after the position of the rotary damper 3 is surely adjusted, and abnormal noise is prevented. be able to.

When the predetermined time has elapsed and Yes in step S40, the voltage setting unit 33 changes the setting of the applied voltage value applied to the stepping motor 13 from voltage A to 0V in step S50. The voltage setting unit 33 transmits the information of 0 V which is the set applied voltage value to the motor drive control unit 34.

When the motor drive control unit 34 receives the information of the applied voltage value of 0V, the application of the voltage to the stepping motor 13 is stopped in step S60. As described above, it is not necessary to excite the stepping motor 13 to hold the rotary damper 3 in the first position. By performing the above processing, a series of control of the stepping motor 13 at the time of switching the operation mode from the operation stop of the bathroom dryer 100 to the ventilation operation is completed. Note that step S40 may be omitted.

Next, control of the stepping motor 13 when switching the operation mode from the ventilation operation to the operation stop state in the bathroom dryer 100 will be described. FIG. 12 is an example of the position of the rotary damper 3 and the applied voltage value applied to the stepping motor 13 when the operation mode is switched from the ventilation operation to the operation stop state of the bathroom dryer 100 according to the first embodiment of the present invention. FIG. In FIG. 12, the position and applied voltage value of the rotary damper 3 are shown in chronological order from the left side. FIG. 13 is a flowchart showing a control procedure of the stepping motor 13 at the time of switching the operation mode from the ventilation operation to the operation stop state of the bathroom dryer 100 according to the first embodiment of the present invention.

During the ventilation operation, the rotary damper 3 is in the first position, which is the lowermost part of the movable range , and the rotary damper 3 is rotated by its own weight and the wind pressure of the air flow flowing from the circulation air passage 61 toward the ventilation air passage 62. 3 is pressed to the circulation orifice 15 side. Therefore, the position of the rotary damper 3 is fixed to the first position without fixing the position of the rotary damper 3 by positioning the stepping motor 13 by exciting the stepping motor 13. Therefore, since it is not necessary to excite the stepping motor 13, no voltage is applied to the stepping motor 13, so that the applied voltage value is set to 0V.

In this state, when the first control unit 32 receives the operation mode switching instruction information to the operation stop state from the control switch 22, the first control unit 32 performs the control of switching the operation mode of the sirocco fan 2 to the operation stop state and the operation stop state. The operation mode switching instruction information to the voltage setting unit 33 is transmitted to the voltage setting unit 33.

When the voltage setting unit 33 receives the instruction to switch the operation mode to the operation stop state in step S110, the voltage setting unit 33 operates in conjunction with the operation mode switching of the sirocco fan 2 in the first control unit 32 in step S120. The applied voltage value applied to is changed from the applied voltage 0V to the voltage A and set. The voltage setting unit 33 transmits information on the voltage A, which is the set applied voltage value, to the motor drive control unit 34.

Upon receiving the information of the voltage A, the motor drive control unit 34 applies the voltage of the voltage A to the stepping motor 13 to drive the stepping motor 13 and move the rotary damper 3 to the second position in step S130. Then, the voltage of the voltage A is applied to the stepping motor 13 while the rotary damper 3 is in the moving position from the first position to the second position.

Next, the voltage setting unit 33 determines in step S140 whether or not a predetermined time has elapsed after the position of the rotary damper 3 has reached the second position. The motor drive control unit 34 can determine that the position of the rotary damper 3 has reached the second position based on the pulse signal output from the pulse oscillator.

If the predetermined time has not elapsed and the result in step S140 is No, the process returns to step S120. That is, the voltage setting unit 33 leaves the setting of the applied voltage value applied to the stepping motor 13 at the voltage A, and transmits the information of the voltage A to the motor drive control unit 34. Then, the motor drive control unit 34 continues to apply the voltage of the voltage A to the stepping motor 13. In other words, the motor drive control unit 34 reliably applies the rotary damper 3 to the top plate 1a of the main body case 1 so that the applied voltage value applied to the stepping motor 13 even after the rotary damper 3 is in the second position. Until the setting of is changed, an extra voltage of the voltage A is applied to the stepping motor 13 by the predetermined number of pulses.

When the rotary damper 3 is not surely abutted against the top plate 1a of the main body case 1, a gap is left between the rotary damper 3 and the top plate 1a of the main body case 1, and when the heating operation is performed after that. The blower may vibrate the rotary damper 3 and cause abnormal noise. Even after the position of the rotary damper 3 reaches the second position, the voltage of the voltage A is continuously applied to the stepping motor 13 until the stepping motor 13 is excited until the fixed time elapses. It can be in a state of abutting against one top plate 1a. As a result, when changing the applied voltage applied to the stepping motor 13, the excitation voltage of the stepping motor 13 can be changed after surely positioning the rotary damper 3, and the generation of abnormal noise can be prevented. ..

If the predetermined time has elapsed and Yes in step S140, the voltage setting unit 33 changes the setting of the applied voltage value applied to the stepping motor 13 from voltage A to voltage B in step S150. The voltage setting unit 33 transmits information on the voltage B, which is the set applied voltage value, to the motor drive control unit 34.

When the motor drive control unit 34 receives the information on the voltage B that is the applied voltage value, the motor drive control unit 34 applies the voltage of the voltage B to the stepping motor 13 in step S160 to excite the stepping motor 13. The bathroom dryer 100 excites the stepping motor 13 with the voltage of the voltage B, which is lower than the voltage A in the operation stopped state, so that the voltage of the voltage A for rotating the rotary damper 3 is stopped. as compared with the case where indicia pressurized to the stepping motor 13, it is possible to reduce the power consumption of the stepping motor 13 upon stopping at.

Further, the bathroom dryer 100 operates the voltage of the voltage A for rotating the rotary damper 3 by exciting the stepping motor 13 with the voltage of the voltage B which is lower than the voltage A in the operation stop state. compared with the case of mark pressurized to the stepping motor 13 even in a stopped state, reducing the amount of heat generated by the stepping motor 13, it is possible to suppress an increase in the temperature of the stepping motor 13. As a result, deterioration of components such as grease and resin gears inside the stepping motor 13 due to heat generation in the stepping motor 13 can be suppressed, and the life of the stepping motor 13 can be extended.

By performing the above processing, a series of control of the stepping motor 13 at the time of switching the operation mode from the ventilation operation of the bathroom dryer 100 to the operation stop state is completed.

Further, when the operation mode is switched from the ventilation operation to the heating operation in which the position of the rotary damper 3 is the same as the second position where the operation is stopped, the same processing as when switching the operation mode from the ventilation operation to the operation stopped state is performed. The same effect as above is obtained. The heater 4 is turned on during the heating operation.

Further, at least one of the voltage A and the voltage B may have the same voltage value as the voltage value that turns on the relay unit 17. In this case, the type of control power supplied from the power supply unit 31 can be reduced, and the processing of the power supply unit 31 is reduced. The voltage value for turning on the relay unit 17 may be the applied voltage C that is different from both the voltage A and the voltage B.

In the bathroom dryer 100 according to the first embodiment described above, the rotary damper 3 is located at the second position, and the rotary damper 3 is held at the second position when the bathroom dryer 100 is stopped and during heating operation. The excitation voltage of the stepping motor 13 is reduced to a voltage B lower than the voltage A within the range where it is possible. Thereby, the bathroom dryer 100 can reduce the heat generation amount in the stepping motor 13 and suppress the temperature rise of the stepping motor 13. As a result, the bathroom dryer 100 can suppress deterioration of components such as grease and resin gears inside the stepping motor 13 due to heat generation in the stepping motor 13, and can extend the life of the stepping motor 13. .. Further, Bathroom dryer 100, without sign pressurizing a large voltage more than necessary during shut-down and the heating operation to the stepping motor 13, it is possible to reduce the power consumption of the stepping motor 13.

Further, in the bathroom dryer 100 according to the first embodiment described above, during the ventilation operation in which the rotary damper 3 is located at the first position which is the lowermost part of the movable range , the applied voltage value is set to 0V and stepping is performed. The voltage is not applied to the motor 13. Thereby, the bathroom dryer 100 can reduce the heat generation amount in the stepping motor 13 and suppress the temperature rise of the stepping motor 13. As a result, the bathroom dryer 100 can suppress deterioration of components such as grease and resin gears inside the stepping motor 13 due to heat generation in the stepping motor 13, and can extend the life of the stepping motor 13. .. Further, Bathroom dryer 100, because it does not mark pressurizing the voltage to the stepping motor 13 during ventilation operation, it is possible to reduce the power consumption of the stepping motor 13.

That is, the bathroom dryer 100 can individually set the voltage applied to the stepping motor 13 to an appropriate voltage value required during the rotation operation of the stepping motor 13 and during the holding at the second position, It is possible to reduce power consumption and extend the life of the stepping motor 13.

FIG. 14 is a diagram showing an example of changing the set value of the applied voltage value applied to the stepping motor 13 in the bathroom dryer 100 according to the first embodiment of the present invention in response to deterioration over time. In anticipation of a decrease in the torque of the stepping motor 13 due to deterioration over time, gradually increase the applied voltage during driving and excitation of the stepping motor 13 from the value at the start of use of the stepping motor 13 in accordance with the usage period of the stepping motor 13. It is preferable to set a high value. For example, in consideration of a torque decrease due to aged deterioration of the stepping motor 13 after 10 years, the set value of the applied voltage is increased by 0.5 V each time the usage period of two years elapses from the start of use of the stepping motor 13.

The period of use of the stepping motor 13 can be determined by the integrated energization time of the stepping motor 13, which is the sum of energization times of the stepping motor 13 since the bathroom dryer 100 was first energized. The integrated energization time is configured by combining a voltmeter that detects energization from the power supply unit 31 to the stepping motor 13 and a time measuring device that can measure the time during which the voltmeter detects energization to the bathroom dryer 100. it can. The integrated energization time can also be measured by a general energization time measuring timer. As the time measuring device, a timer function or a timer device built in the microcomputer is used. The method for measuring the cumulative energization time is not limited to the above method.

By setting the first voltage value high based on the cumulative energization time, the excitation voltage required to rotate the rotary damper 3 can be maintained for a long period of time, and the stepping motor 13 can have a long life. is there. Further, by setting the second voltage value high based on the cumulative energization time, the torque required to hold the rotary damper 3 in the second position can be maintained for a long period of time, and the stepping motor 13 has a long life. Is possible.

In addition, the bathroom dryer 100 does not need to use the stepping motor 13 that has a large torque at the start of use and is expensive in order to ensure the required torque even after deterioration over time. Therefore, the bathroom dryer 100 can use the inexpensive stepping motor 13.

Therefore, according to the bathroom dryer 100 according to the first embodiment, it is possible to obtain the bathroom dryer capable of extending the life of the bathroom dryer by reducing the heat generation.

The configurations shown in the above embodiments show an example of the content of the present invention, and can be combined with other known techniques, and the configurations of the configurations are possible without departing from the gist of the present invention. It is also possible to omit or change parts.

1 main body case, 1a top plate, 1b flange, 2 sirocco fan, 3 rotation damper, 4 heater, 5 exhaust duct connection part, 5a outside air outlet, 6 filter, 7 fan motor, 8 circulating air outlet in bathroom, 9 control Substrate, 10 Intake port, 11 Design panel, 12 Bathroom panel circulation outlet, 13 Stepping motor, 14 Damper rotary shaft, 15 Circulation orifice, 16 Ventilation connection port, 17 Relay section, 21 body, 22 Control switch, 23 Communication line , 31 power supply unit, 32 first control unit, 33 voltage setting unit, 34 motor drive control unit, 35 first storage unit, 36 first communication unit, 41 second communication unit, 42 operation unit, 43 display unit, 44th 2 storage unit, 45 second control unit, 51 exhaust duct, 52 bathroom, 53 ceiling surface, 54 external power supply, 55 breaker, 56 power supply line, 61 circulation air passage, 62 ventilation air passage, 100 bathroom dryer, 101 processor, 102 memory.

Claims (7)

An air intake that sucks in the air in the bathroom,
A circulation air passage that communicates the in-bathroom circulation outlet with which the air in the bathroom sucked from the air inlet is blown into the bathroom and the air inlet,
A bathroom air outlet that blows out the bathroom air sucked from the air inlet to the outside of the bathroom, and a ventilation air passage that connects the air inlet to the air outlet.
An air blower that sucks air from the bathroom from the air inlet and guides the air from the air sucked from the air inlet to the circulating air outlet in the bathroom or the air outlet outside the bathroom.
The position of the range from the first position to close the air circulation duct to a second position to close the ventilation air passage, the rotary damper opening is adjustable by the rotating operation to open and close said full outer outlet,
A motor for changing the opening of the rotary damper,
In conjunction with switching the operation mode of the blower unit, a voltage setting unit that selects and sets an applied voltage value corresponding to the operation mode of the blower unit from a plurality of different predetermined voltage values,
A motor drive control unit that controls the drive of the motor by applying a voltage to the motor according to the applied voltage value set by the voltage setting unit;
Equipped with
The plurality of different voltage values are
A first voltage value that causes the motor to generate a first torque for rotating the rotary damper to a position in a range from the first position to the second position;
A second voltage value that is lower than the first voltage value and that causes the motor to generate a second torque for holding the rotary damper in the second position;
Only including,
The voltage setting unit increases and sets at least one of the first voltage value and the second voltage value based on an integrated energization time obtained by accumulating energization times to the motor,
A bathroom dryer characterized by. The voltage setting unit sets the applied voltage value to 0 V when the rotary damper is held at the first position while the blower unit is operating.
The bathroom dryer according to claim 1, wherein: The voltage setting unit sets the applied voltage value to the second voltage value when the rotary damper is held at the second position while the blower unit is not operating.
The bathroom dryer according to claim 1 or 2 . The voltage setting unit sets the applied voltage value to the second voltage value when the rotary damper is held at the second position while the blower unit is operating.
The bathroom dryer according to any one of claims 1 to 3, wherein: The voltage setting unit sets the applied voltage value to the first voltage value, and after the rotary damper reaches from the first position to the second position, or from the second position to the first position. After reaching, changing the applied voltage value after a lapse of a predetermined time,
The bathroom dryer according to any one of claims 1 to 4 , characterized in that : A heater for heating the air blown from the circulation outlet in the bathroom,
A relay section for controlling the energization of the heater,
Equipped with
At least one of the first voltage value and the second voltage value is the same voltage value as the voltage value that turns on the relay unit,
The bathroom dryer according to any one of claims 1 to 5, wherein: The motor is a stepping motor,
The bathroom dryer according to any one of claims 1 to 6 , wherein:

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