JP4775670B2 - Bathroom Dryer - Google Patents

Description

  The present invention relates to a bathroom dryer that performs heating and ventilation in a bathroom.

  As such a bathroom dryer, one that controls the number of rotations of a motor that rotates a fan based on electric power supplied from a commercial power source and a duty control signal is known. In many cases, the voltage of commercial power supplied to Japanese homes is 100V, but 200V commercial power is also supplied to deal with electrical appliances that consume relatively large amounts of power. In order to cope with such a situation, there are an increasing number of cases where bathroom dryers are also available in 100V specification and 200V specification.

By the way, if a 200V bathroom dryer or air conditioner is connected to a 100V commercial power supply, the power supply voltage assumed by the electrical system of the bathroom dryer or air conditioner is insufficient, so the motor speed is lower than intended. Become. In view of this, it has been proposed to detect a mismatch between a power supply voltage supplied from a commercial power supply and a voltage supported by an air conditioner using a motor, that is, an erroneous connection to a different voltage power supply (for example, Patent Document 1 below). reference).
Japanese Patent No. 3801667

  The prior art described in Patent Document 1 is configured to detect the voltage value of the actually connected power supply voltage based on the duty control signal input to the motor and the rotation speed information of the motor. Yes. More specifically, as described in Paragraph Nos. 0031 to 0034 of Patent Document 1, during the control operation of the air conditioner, the duty control information output from the duty control unit is acquired and the rotational speed is detected. The current rotation number of the motor output from the unit is acquired. Then, the power supply voltage is determined based on the acquired duty control information and rotation speed information, and the voltage of the commercial power supply to which the air conditioner is connected is known.

  By the way, although such a conventional technique is an effective power supply voltage determination method in general air-conditioning equipment, inconvenience occurs when applied to a bathroom dryer installed and used in an environment such as a bathroom. The present inventors have found out. Since the bathroom dryer is literally installed in the bathroom, regardless of whether the corresponding power supply voltage of the device is 100V or 200V, the plug is not plugged into the outlet and connected to the power supply. The wiring is routed up to and directly connected. Therefore, if the installation contractor makes an incorrect connection during the installation work, the user cannot correct the incorrect connection by itself so as to replace the plug, and it is necessary to call the installation contractor again. In view of such a situation, the conventional technology described above is configured to determine an erroneous connection during the control operation, so the actual connection is actually found after the installer leaves. As a result, the installation contractor must be called again.

  Therefore, in the present invention, even when the power supply work is performed with direct connection wiring, it is possible to grasp the erroneous connection to the different voltage power source during the installation work, and after the installation work, the installation contractor is called again to make the incorrect connection. It aims at providing the bathroom dryer which can avoid the situation which is made to correct.

In order to solve the above problems, a bathroom dryer according to claim 1 of the present application is a bathroom dryer that heats and ventilates a bathroom by driving a motor, and includes a control means for controlling the motor. The control means includes a power supply detection unit that detects power supply from a commercial power source, and an initial check execution unit that performs an operation check of the bathroom dryer, and applies a control voltage to the motor. The motor controls rotation of the motor, and the control means corresponds to an intermediate duty ratio corresponding to an intermediate control pressure between a minimum control voltage and a maximum control voltage applied to the motor, and corresponds to the intermediate duty ratio. predetermined rotational speed of said motor by has stored in advance as an intermediate rotational speed, the initial check execution unit, in response to said power supply detection unit detects the power supply from the commercial power source When an initial check for performing power supply voltage abnormality determination is performed, and it is determined that the voltage supplied from the commercial power supply and the voltage corresponding to the bathroom dryer are inconsistent as a result of the execution of the initial check , and issued a warning for notifying the abnormal power supply voltage, in the initial check, the rotational speed of the case of controlling the motor at the intermediate duty ratio, the power supply voltage abnormality when it becomes equal to or less than the intermediate rotational speed It is characterized by judging .

  In the present invention, it is determined as an initial check whether or not the voltage supplied from the commercial power supply and the voltage corresponding to the bathroom dryer are inconsistent, and when it is determined that they are inconsistent, the power supply voltage It is supposed to issue an alarm for notifying that it is abnormal. Therefore, even if the installer who installs the bathroom dryer makes a connection error, the initial check is performed in response to detection of power supply from the commercial power supply. It is possible to know whether or not there is an erroneous connection automatically when the power supply from the power source is detected. As a result, it is possible to prevent the installation contractor from leaving with an incorrect connection and to ensure the connection to a normal power source.

  When a control voltage corresponding to the voltage that the bathroom dryer originally supports is applied, the minimum control voltage that is the lower limit and the maximum control voltage that is the upper limit are determined by the number of rotations of the motor corresponding to the minimum control voltage. Also, the motor speed corresponding to the maximum control voltage is increased. In addition, the same tendency occurs when a control voltage corresponding to a voltage lower or higher than the voltage originally supported by the bathroom dryer is applied, and the tendency of the difference becomes more noticeable as the corresponding voltage increases. It becomes. Therefore, for example, when the power supplied from a 100 V commercial power supply is compared with the case where power is supplied from a 200 V commercial power supply to a bathroom dryer of 200 V specification, the number of rotations of the motor corresponding to the minimum control voltage is compared. The difference is small, and the motor speed difference corresponding to the maximum control voltage is large. On the other hand, in the bathroom, there are various factors that affect the rotation state of the motor, such as the temperature of the bathroom and the adhesion of shampoo to the fan. The rotation of the motor can be obtained even if a specific voltage is applied to the motor. Numbers vary. Therefore, it is effective to perform an initial check with the duty ratio and rotation speed corresponding to the maximum control voltage in order to avoid misjudgment. In the present invention in which the initial check is performed, it is assumed that the user feels uncomfortable. Therefore, the motor is controlled by an intermediate duty ratio corresponding to the intermediate control voltage between the minimum control voltage and the maximum control voltage, and the intermediate rotational speed of the motor corresponding to the intermediate duty ratio is compared with the actual rotational speed. Thus, it is possible to achieve a synergistic effect of improving the determination accuracy and reducing the noise.

Further, in the bathroom drying machine according to the present invention, the control means, it is also preferable to perform the initial check by controlling the rotation of the motor control voltage between said intermediate control voltage and the maximum control voltage .

  In this aspect, since the initial check is executed by controlling the rotation of the motor with the control voltage between the intermediate control voltage and the maximum control voltage, erroneous determination can be avoided more reliably.

  According to the present invention, even when the power supply work is performed by direct connection wiring, it is possible to grasp the erroneous connection to the different voltage power source by performing the initial check at the time of the installation work, and again after the installation work. It is possible to provide a bathroom dryer capable of avoiding a situation in which an installer is called to correct an incorrect connection.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  The bathroom dryer according to the embodiment of the present invention has a circulation mode for sucking air in the bathroom and ejecting the air in the direction of the bathroom via a heater, and a ventilation mode for sucking the air in the bathroom and discharging it outside the bathroom. In addition to providing it, it is possible to ventilate the bathroom, which is the second room other than the bathroom. The arrangement of the bathroom dryer will be described with reference to FIG. As shown in FIG. 1, bathroom dryer DM is attached to the ceiling of bathroom BR. The bathroom dryer DM can suck air in the bathroom BR and eject the air in the direction of the bathroom BR via a heater (not shown in FIG. 1). The bathroom dryer DM can also suck the air in the bathroom BR and discharge it outside the bathroom through the duct D1. The bathroom dryer DM can also suck air in the bathroom SR through the duct SR2 connected to the suction port SR1 provided on the ceiling of the bathroom SR, and discharge the air outside the bathroom through the duct D1.

  Then, the external appearance of bathroom dryer DM is demonstrated, referring FIG. FIG. 2A is a rear perspective view of the bathroom dryer DM, and FIG. 2B is a front perspective view of the bathroom dryer DM. The bathroom dryer DM includes a front-side cover 30 and a main body case 10 that covers the back and side surfaces.

  As shown in FIG. 2 (a), the side surface of the main body case 10 is provided with a ventilation port 12 for discharging air during ventilation, and air is supplied from a washroom as a second chamber to the opposite side. A suction port 11 outside the bathroom is provided. Further, a blower motor FM for rotating a blower housed in the main body case 10 is exposed at the opening on the back surface of the main body case 10. Furthermore, as shown in FIG.2 (b), the cover 30 is provided with the bathroom suction port 13 which sucks in the air in a bathroom, and the circulation blower outlet 14 which blows off the heated air.

  Here, in order to explain the inside of the bathroom dryer DM, a cross-sectional view in the direction along the ventilation port 12 from the suction port 11 outside the bathroom is shown in FIG. As shown in FIG. 3, a partition wall member 20, a blower 15, and a damper 16 are arranged in the main body case 10 in order from the bathroom suction port 13. The blower 15 is configured to rotate according to the rotation of the blower motor FM, suck air from the suction port 151, and eject air from the blower port 152.

  A damper 16 is disposed at the tip of the blower outlet of the blower 15. The damper 16 is a rotary rotary damper, and plays a role of directing the air blown from the blower outlet 152 of the blower 15 to one or both of the ventilation air passage 101 and the circulation air passage 102.

  As shown in FIG. 3, the ventilation air passage 101 communicates the air outlet 152 and the ventilation port 12 of the blower 15, and the circulation air passage 102 communicates the air outlet 152 and the circulation air outlet 14 of the blower 15. Yes. Therefore, the ventilation passage composed of the ventilation air passage 101 and the circulation air passage 102 forms a bifurcated branch portion that divides the air into each, and the damper 16 is disposed at a position corresponding to the bifurcated branch portion.

  A heater 18 accommodated in a heater case 17 is disposed at the circulation outlet 14 connected to the end of the circulation air passage 102. A louver 19 is disposed downstream of the heater 18.

  As described above, the air ejected from the blower outlet 152 of the blower 15 is distributed to the respective air paths by the damper 16. The correspondence between the position of the damper 16 and each mode of the ventilation mode, the circulation mode, and the clothing drying mode will be described with reference to FIGS. FIG. 4 is a diagram schematically showing a cross-sectional view in a direction along the ventilation port 12 from the outside bathroom suction port 11 of the bathroom dryer DM. FIG. 5 is a diagram illustrating the position of the damper 16 in the ventilation mode. FIG. 6 is a diagram illustrating the position of the damper 16 in the circulation mode. FIG. 7 is a diagram illustrating the position of the damper 16 in the clothes drying mode.

  As shown in FIG. 4, the damper 16 partially opens from the first position 16 a that completely blocks the circulation air passage 102 to the second position 16 b that completely closes the ventilation air passage 101, and further below the ventilation air passage 101. And it is comprised so that it may rotate to the 3rd position 16c which blocks up. As shown in FIG. 5, when the damper 16 is located at the first position 16 a, the circulation air passage 102 is completely blocked by the damper 16 and is blown out from the outlet 152 of the blower 15. All the air flows to the ventilation air passage 101 and is exhausted from the ventilation opening 12. Therefore, the mode in this case is a ventilation mode for ventilating the air in the bathroom BR.

  As shown in FIG. 6, when the damper 16 is located at the second position 16 b, the ventilation air passage 101 is completely blocked by the damper 16 and is blown out from the outlet 152 of the blower 15. All the air flows to the circulation air passage 102 and is circulated from the circulation outlet 14 into the bathroom BR. Therefore, the mode in this case is a circulation mode in which air in the bathroom BR is circulated.

  As shown in FIG. 7, when the damper 16 is positioned at the third position 16c, the upper side of the ventilation air passage 101 is blocked and the lower side of the bathroom BR is opened, and the blower 15 blows off. A part of the air blown out from the outlet 152 flows to the ventilation air passage 101 and the rest flows to the circulation air passage 102. Accordingly, a part of the air blown out from the blower 15 is discharged from the ventilation port 12 and the remaining part is circulated from the circulation outlet 14 into the bathroom BR. Accordingly, the mode in this case is a clothing drying mode in which ventilation is performed while circulating a part of the air in the bathroom BR.

  Control unit CU for controlling the position control of the damper 16 as described above, the blower control of the blower 15, the energization of the heater 18, etc. (corresponding to the control means of the present invention and functions as a power supply detection unit and an initial check execution unit) Is attached to the main body case 10. A control system including the control unit CU will be described with reference to FIG. FIG. 8 is a control block diagram of the bathroom dryer DM according to the embodiment of the present invention.

  The control unit CU includes a CPU 21 that performs arithmetic processing and a memory 22 that stores information. The remote controller 400 transmits an operation signal to the control unit CU by a user's operation. Based on the received operation signal, the control unit CU drives the blower motor FM to rotate the blower 15, drives the damper motor M <b> 1 to change the stop position of the damper 16, or drives the heater 18. Can be. The CPU 21 can refer to information stored in the memory 22 as appropriate, perform processing based on the information, and store new information in the memory 22.

  FIG. 9 is an external view of the remote controller 400 of the bathroom dryer DM according to the embodiment of the present invention. The remote controller 400 is a user interface for the user to operate the bathroom dryer DM. The panel 410 of the remote controller 400 is provided with operation mode switches corresponding to each of a plurality of operation modes that can be executed by the bathroom dryer DM. Specifically, three operation mode switches, a ventilation mode switch 420, a heating mode switch 430, and a clothing drying mode switch 440, are provided, and the user can select an operation mode corresponding to the operation mode that the bathroom dryer DM wants to execute. Turn on the switch.

  Further, the panel 410 is provided with a liquid crystal display unit 450, and various information relating to operation settings of the bathroom dryer DM such as operation time, temperature of air blown from the circulation outlet 14, operation start time, operation end time, and the like. Is displayed. Further, various information on operation such as occurrence of abnormality is displayed on the liquid crystal display unit 450. In addition, the panel 410 is provided with a speaker 490, which sounds when an abnormality occurs and emits a notification sound. The user can change each setting as appropriate by moving the cursor displayed on the liquid crystal display unit 450 using the instruction switches 460a and 460b and turning on the confirmation switch 470. In addition, the panel 410 is provided with an end switch 480 that is turned on when the operation of the bathroom dryer DM is ended.

  In the case of this embodiment, the power supplied to the blower motor FM, the damper motor M1, and the heater 18 is supplied from the power supply circuit S1 via the control unit CU. The power supply circuit S1 is directly connected to a commercial power source PS provided in a house where the bathroom dryer DM is installed, and power is supplied from the commercial power source PS. The bathroom dryer DM of the present embodiment has a function of automatically determining by the control unit CU as an initial check whether it is connected to a commercial power supply having a voltage different from the corresponding power supply voltage. The determination flow will be described with reference to FIG. In the description of FIG. 10, when the flag F is “0”, it indicates that no error code is output, and when the flag F is “1”, it indicates that an error code is output.

  It is determined whether the flag F is “1”, that is, whether an error code is output (step S01). If the flag F is “1”, the process proceeds to step S11. If the flag F is not “1”, the process proceeds to step S02.

  If the flag F is not “1” in step S01, it is determined whether or not power is supplied from the commercial power source PS (step S02). This determination determines that power is supplied from the commercial power source PS when the commercial power source PS and the power supply circuit S1 are connected and the power supplied from the commercial power source PS is transferred to the control unit CU. ing. According to such a determination method, even if the installer forgets to turn on the main power switch (not shown), the initial check can be executed. However, when the commercial power supply PS and the power supply circuit S1 are connected and the main power switch (not shown) of the bathroom dryer DM is turned on, it can be determined that power is supplied from the commercial power supply PS. This is a preferred embodiment. As a result of the determination in step S02, if it is determined that power is supplied from the commercial power source PS, the process proceeds to step S03. If it is determined that power is not supplied from the commercial power source PS, the process proceeds to step S01. Return.

  In step S02, when it is detected that power is supplied from the commercial power source PS, the control unit CU performs an initial check. Therefore, first, the execution of the initial check is notified (step S03). Specifically, information such as “during initial check” is displayed on the liquid crystal display unit 450 illustrated in FIG. 9, and a sound such as “initial check is being performed” is emitted from the speaker 490.

  After the notification in step S03, the control unit CU applies a control voltage of 4V to the blower motor FM (step S04). As shown in FIG. 11, the control voltage of 4V is set as an intermediate control voltage between the minimum control voltage (3V) and the maximum control voltage (5V) applied to the blower motor FM. As shown in FIG. 11, the control unit CU stores a duty ratio corresponding to the control voltage and the rotation speed of the blower motor FM in correspondence with the duty ratio. In FIG. 11, the control voltage-rotation speed curve when the lower limit voltage 180V in the case of the commercial power supply voltage 200V is applied to the bathroom dryer DM having a device configuration with a corresponding voltage of 200V is “AC180V”, and the corresponding voltage is A control voltage-rotational speed curve when an upper limit voltage 110V in the case of a commercial power supply voltage 100V is applied to a bathroom dryer DM having a device configuration of 200V is shown as “AC110V”. In the present embodiment, the intermediate control voltage is set so as to be an intermediate value between the minimum control voltage value and the maximum control voltage value, but a value closer to the maximum control voltage value than the intermediate value is set as the intermediate control voltage. It is also preferable to set.

  When the control unit CU applies a control voltage to the blower motor FM in step S04, it is determined whether or not the elapsed time has passed 20 seconds (step S05). After the control unit CU applies a control voltage to the blower motor FM and 20 seconds have elapsed, the rotational speed of the blower motor FM is measured (step S06).

  It is determined whether the time during which the rotation speed of the blower motor FM measured in step S06 is equal to or less than the previously stored intermediate rotation speed (990 rpm in the present embodiment) continues for 10 seconds (step S07). As shown in FIG. 11, the intermediate rotation speed of 990 rpm is a predetermined threshold value corresponding to the intermediate control voltage. When the commercial power supply voltage is 100V (applied voltage 110V to the bathroom dryer DM), when the intermediate control voltage is applied to the blower motor FM, the standard rotational speed is about 800 rpm. Further, when the commercial power supply voltage is 200V (applied voltage 180V to the bathroom dryer DM), when the intermediate control voltage is applied to the blower motor FM, the standard rotational speed is about 1200 rpm. The reason why the intermediate rotational speed is set to 990 rpm is because it is an approximately intermediate value between these values. By setting in this way, for example, when the commercial power supply voltage is normally connected to a terminal of 200 V, the rotational speed of the blower motor FM does not fall below 1200 rpm even if the commercial power supply voltage fluctuates. If the rotation speed of the motor FM is 990 rpm or less, it can be determined that the connected commercial power supply voltage is 100V.

  In the present embodiment, the intermediate control voltage is set to the middle between the minimum control voltage and the maximum control voltage. The blower motor obtained in the case of the commercial power supply voltage of 100V and 200V in the minimum control voltage. This is because the rotation speed of FM is close and there is a risk of erroneous determination. In addition, at the maximum control voltage, although the rotational speed of the blower motor FM obtained when the commercial power supply voltage is 100V and 200V is separated, the amount of air blown from the blower 15 is large and noise is increased. This is to make the user uncomfortable.

  As a result of the determination in step S07, if the time during which the rotation speed of the blower motor FM is equal to or lower than the intermediate rotation speed continues for 10 seconds or more, the voltage is connected to the different voltage power source and the voltage corresponding to the bathroom dryer DM and the commercial power source PS. Is determined to be in an inconsistent state, and the flag F is set to “1” and stored in the memory 22 (step S08). After step S08, the process returns to step S01.

  If the flag F is “1” as a result of the determination in step S01, an abnormality notification process is executed (step S11). The abnormality notification is executed by displaying an abnormality message on the liquid crystal display unit 450 (see FIG. 9) or by producing a sound indicating an abnormality from the speaker 490 (see FIG. 9).

  After notifying the abnormality in step S11, it is determined whether the connection between the commercial power source PS and the bathroom dryer DM is released (step S12). If the connection between the commercial power source PS and the bathroom dryer DM is not released, the process returns to step S01. If the connection between the commercial power source PS and the bathroom dryer DM is released, the corresponding part of the memory 22 with the flag F being “1” is deleted, and the flag F is stored as “0” (step S13). . After rewriting the flag F, the process returns to step S01.

It is a figure for demonstrating the arrangement | positioning aspect of the bathroom dryer of this embodiment. It is a figure for demonstrating the external appearance of the bathroom dryer of this embodiment. It is a figure for demonstrating the inside of a bathroom dryer. It is a figure for demonstrating operation | movement of the damper inside a bathroom dryer. It is a figure for demonstrating operation | movement of the damper inside a bathroom dryer. It is a figure for demonstrating operation | movement of the damper inside a bathroom dryer. It is a figure for demonstrating operation | movement of the damper inside a bathroom dryer. It is a figure for demonstrating the control structure of a bathroom dryer. It is a figure for demonstrating the remote control shown in FIG. It is a power supply abnormality determination flowchart of a bathroom dryer. It is a control voltage-rotation speed curve used for power supply abnormality determination shown in FIG.

Explanation of symbols

10: Main body case 11: Outside suction port 12: Ventilation port 13: Bathroom suction port 14: Circulation outlet 15: Blower 16: Damper 16a: First position 16b: Second position 16c: Third position 17: Heater case 18 : Heater 19: Louver 20: Partition member 22: Memory 30: Cover 101: Ventilation air passage 102: Circulation air passage 151: Suction port 152: Air outlet 400: Remote control 410: Panel 420: Ventilation mode switch 430: Heating mode switch 440 : Clothing drying mode switch 450: Liquid crystal display unit 460 a: Instruction switch 470: Confirm switch 480: End switch 490: Speaker BR: Bathroom CU: Control unit D1: Duct DM: Bathroom dryer FM: Blower motor M1: Damper motor PS: Commercial Power supply S1: Power supply circuit SR: Washroom SR1: Suction port SR2: Duct

Claims (2)

A bathroom dryer that heats and ventilates the bathroom by driving a motor;
Control means for controlling the motor,
The control means includes a power supply detection unit that detects power supply from a commercial power source, and an initial check execution unit that performs an operation check of the bathroom dryer, and applies a control voltage to the motor Which controls the rotation of the motor,
The control means includes an intermediate duty ratio corresponding to an intermediate control voltage between a minimum control voltage and a maximum control voltage applied to the motor, and an intermediate rotation of a predetermined rotational speed of the motor corresponding to the intermediate duty ratio. Stored in advance as a number,
The initial check execution unit executes an initial check for performing power supply voltage abnormality determination in response to the power supply detection unit detecting power supply from a commercial power source, and as a result of execution of the initial check, If the voltage and the bathroom dryer supplied from the commercial power source is determined to a voltage corresponding is inconsistent is to issued a warning for notifying the abnormal power supply voltage, in the initial check, the intermediate duty A bathroom dryer characterized by determining that the power supply voltage is abnormal when the rotational speed when the motor is controlled by the ratio is equal to or lower than the intermediate rotational speed .   2. The bathroom dryer according to claim 1, wherein the control unit performs the initial check by controlling rotation of the motor with a control voltage between the intermediate control voltage and the maximum control voltage. .

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