Driving device of rotating body and mist capturing device

Abstract

This invention relates to a drive device for a rotating body that can detect an incorrect installation state of the rotating body before the shaft insertion hole of the rotating body engages with the motor shaft. The drive device for a rotating body, in which the motor shaft (6a) of a rotating body motor (6) is inserted into the shaft insertion hole (5a) of a rotating body (5), includes: a control unit (12) that, when the rotation of the rotating body (5) begins, reduces the output to the rotating body motor (6) after the rotational speed of the rotating body motor (6) reaches the determination speed, and determines whether the rotating body (5) is in a correct or incorrect installation state based on subsequent changes in the rotational state of the motor shaft (6a); and a reporting unit (14) that reports if the control unit (12) determines that the rotating body (5) is in an incorrect installation state, thus enabling the detection of an incorrect installation state of the rotating body (5) through the report from the reporting unit (14).

Description

Technical Field

[0001] This invention relates to a driving device for rotating bodies such as filters and fans in a range hood, as well as a mist collection device for range hoods. Background Technology

[0002] In the past, there was a type of range hood that used a motor to rotate the filter, fan, and other components.

[0003] For example, Patent Document 1 discloses a range hood in which a filter consisting of a rotating body with multiple holes is fitted into the shaft of a filter motor, and the filter is rotated at high speed by rotating the filter motor at high speed to prevent oil contained in the fumes from seeping into the interior of the range hood.

[0004] Patent Document 1: Japanese Patent No. 7341481

[0005] Prolonged use of a range hood can sometimes lead to the filter becoming contaminated with grease and other substances. In such cases, the filter is usually removed from the motor shaft for cleaning and then reinstalled on the motor shaft.

[0006] The filter needs to be installed in the correct mounting position so that it can rotate as part of the motor shaft. However, when a filter that has been removed from the motor shaft is reinstalled on the motor shaft, it is sometimes installed in the incorrect mounting position where it rotates relative to the motor shaft instead of rotating as part of the motor shaft.

[0007] If the filter motor is rotated at high speed under this incorrect installation condition, the motor shaft and the filter's shaft insertion hole will rub against each other, generating strong friction and scratches. These scratches will melt due to frictional heat, causing the motor shaft and shaft insertion hole to seize up. As a result, problems such as the filter being unable to be disassembled or difficult to disassemble may occur.

[0008] This problem is not limited to the device that drives the filter of the range hood; it also occurs in the device that drives the fan and the device that drives rotating bodies other than the range hood. Summary of the Invention

[0009] The present invention was made to solve the above-mentioned problems, and its object is to provide a drive device for a rotating body that can detect an incorrect installation state of the rotating body before the motor shaft of the rotating body motor and the shaft insertion hole of the rotating body are engaged.

[0010] The rotating body driving device of the present invention mounts the rotating body by inserting the motor shaft of a rotating body motor through a shaft insertion hole in the rotating body, and rotates the rotating body by rotating the rotating body motor. It includes: a control unit for determining the mounting state of the rotating body; an input unit for inputting the start and stop of rotation of the rotating body to the control unit; a detection unit for detecting the rotational speed of the motor shaft; and a reporting unit. The determination of the mounting state of the rotating body by the control unit is performed as follows: if there is an input indicating the start of rotation of the rotating body in the control unit, after increasing the rotational speed of the rotating body motor to a determination rotational speed lower than the normal rotational speed of the rotating body motor, the output to the rotating body motor is reduced. Based on the change in the rotational state of the motor shaft after reducing the output to the rotating body motor, it is determined whether the rotating body is in a correct or incorrect mounting state. If it is determined that the rotating body is in an incorrect mounting state, a report is made by the reporting unit.

[0011] In the drive device for the rotating body of the present invention, it can be configured such that, after a predetermined time has elapsed after reducing the output to the motor for the rotating body, if the rotational speed of the motor shaft detected by the detection unit is below a predetermined rotational speed, it is determined that the rotating body is not in an correct installation state and a report is made by the reporting unit.

[0012] In the drive device for the rotating body of the present invention, it can be configured such that the output to the motor for the rotating body is reduced until it stops, and after a predetermined time has elapsed since the output to the motor for the rotating body stops, if the rotational speed of the motor shaft detected by the detection unit is below a predetermined rotational speed, it is determined that the rotating body is not in an correct installation state and a report is made by the reporting unit.

[0013] According to the drive device of the rotating body, the rotational speed of the motor shaft after a specified time has elapsed since the output of the motor to the rotating body stops is significantly different when the rotating body is in the correct installation state and when the rotating body is not in the correct installation state, so the installation state of the rotating body can be determined more accurately.

[0014] In the drive device for the rotating body of the present invention, it can be configured to monitor the manner in which the rotational speed of the motor shaft decreases after reducing the output to the motor for the rotating body by detecting the rotational speed of the motor shaft detected by the detection unit. If the rotational speed of the motor shaft decreases rapidly, it is determined that the rotating body is not in an correct installation state, and a report is made by the reporting unit.

[0015] In the drive device for the rotating body of the present invention, the control unit can be configured such that when it determines that the rotating body is in a correct installation state, it rotates the motor for the rotating body at a normal rotation speed, and when it determines that the rotating body is not in a correct installation state, it stops the output to the motor for the rotating body and maintains the output stopped.

[0016] According to the drive device of the rotating body, if the rotating body is in the correct installation state, the rotating body will rotate at the normal rotation speed after the installation state is determined. Therefore, after the installation state is determined, there is no need to perform an operation to rotate at the normal speed.

[0017] If the rotating body is not in the correct installation state, it will stop after the installation state is determined and will not rotate at the normal rotation speed. Therefore, it can prevent the motor shaft from getting stuck in the shaft insertion hole of the rotating body, and it can also prevent the rotating body from contacting and breaking other parts due to incorrect installation.

[0018] In the drive device for the rotating body of the present invention, it can be configured such that when the control unit determines that the rotating body is not in an correct installation state, it stops outputting to the motor for the rotating body. The drive device for the rotating body has a storage unit that stores the result that the rotating body is determined to be in an incorrect installation state. When the result that the rotating body is determined to be in an incorrect installation state is stored in the storage unit, even if there is an input indicating that the rotation of the rotating body has started, the control unit maintains the stop of outputting to the motor for the rotating body.

[0019] According to the drive device of the rotating body, even if the rotating body is not installed in the correct state, the rotating body will not rotate even if the input unit inputs the start of rotation of the rotating body to the control unit again. Therefore, it can prevent the motor shaft from getting stuck in the shaft insertion hole of the rotating body, and can prevent the rotating body from contacting and breaking with other parts.

[0020] In the drive device for the rotating body of the present invention, it can be configured such that when the control unit determines that the rotating body is not in an correct installation state, it stops outputting to the motor for the rotating body. The drive device for the rotating body has a storage unit that stores the result of determining that the rotating body is not in an correct installation state. When the result of determining that the rotating body is not in an correct installation state is stored in the storage unit, even if there is an input indicating that the rotation of the rotating body has started, the control unit maintains the stop of outputting to the motor for the rotating body and does not perform the determination of the installation state of the rotating body again.

[0021] According to the drive device of the rotating body, if it is determined that the installation state of the rotating body is incorrect, the determination of the installation state of the rotating body will not be performed again, thus reducing the load involved in determining the installation state of the rotating body.

[0022] The actions that occur during the judgment of the installation state of the rotating body will not be performed repeatedly, so there will be no discomfort from repeatedly performing the actions that occur during the judgment.

[0023] In the drive device for the rotating body of the present invention, it can be configured such that when the control unit determines that the rotating body is not in an correct installation state, it stops outputting to the motor for the rotating body. The drive device for the rotating body has a storage unit that stores the result of determining that the rotating body is not in an correct installation state. When the result of determining that the rotating body is not in an correct installation state is stored in the storage unit, even if there is an input indicating that the rotation of the rotating body has started, the control unit maintains the stop of outputting to the motor for the rotating body and reports again through the reporting unit.

[0024] According to the drive device of the rotating body, if the operation to start the rotation of the rotating body is performed but the rotating body does not rotate, the user may feel uneasy. However, the user can discover that the installation status of the rotating body is incorrect through the report unit, thus preventing the user from feeling uneasy.

[0025] In the driving device for the rotating body of the present invention, it can be configured such that if there is an input from the input unit indicating that the rotation of the rotating body has stopped, the control unit resets the storage of the result in the storage unit that the rotating body is not in the correct installation state.

[0026] According to the drive device of the rotating body, the storage of the result that the rotating body is not in the correct installation state in the above-mentioned storage unit is reset, so that when the rotating body is installed again after the installation state of the rotating body is judged, the operation of judging the installation state of the rotating body can be performed.

[0027] The fog collection device of the present invention is a fog collection device equipped with a drive device for the rotating body of the present invention.

[0028] The driving device for the rotating body of the present invention can have the following structure.

[0029] (1) A drive device for a rotating body, which mounts the rotating body by inserting the motor shaft of a rotating body motor through a shaft insertion hole of the rotating body, and rotates the rotating body by rotating the rotating body motor, comprising: a control unit for determining the mounting state of the rotating body; an input unit for inputting the rotation start and rotation stop of the rotating body to the control unit; a detection unit for detecting the rotation speed of the motor shaft; and a reporting unit, wherein the determination of the mounting state of the rotating body by the control unit is performed as follows: if there is an input indicating the rotation start of the rotating body in the control unit, after increasing the rotation speed of the rotating body motor to a determination rotation speed lower than the normal rotation speed of the rotating body motor, the output to the rotating body motor is reduced; based on the change in the rotation state of the motor shaft after reducing the output to the rotating body motor, the device determines whether the rotating body is in a correct mounting state or not; if the device is determined to be in a incorrect mounting state, the device reports this via the reporting unit.

[0030] (2) The driving device for the rotating body according to (1) is characterized in that, after a predetermined time has elapsed after reducing the output to the motor for the rotating body, if the rotational speed of the motor shaft detected by the detection unit is below the predetermined rotational speed, it is determined that the rotating body is not in the correct installation state and a report is made by the reporting unit.

[0031] (3) The drive device for the rotating body according to (1) or (2) is characterized in that, after reducing the output to the motor for the rotating body until it stops, if the rotational speed of the motor shaft detected by the detection unit is below the specified rotational speed after a predetermined time has elapsed since the output to the motor for the rotating body stops, it is determined that the rotating body is not in the correct installation state and a report is made by the reporting unit.

[0032] (4) The drive device for the rotating body according to any one of (1) to (3) is characterized in that, by detecting the rotational speed of the motor shaft by the detection unit, the manner in which the rotational speed of the motor shaft decreases after reducing the output to the motor for the rotating body, if the rotational speed of the motor shaft decreases quickly, it is determined that the rotating body is not in the correct installation state, and a report is made by the reporting unit.

[0033] (5) The drive device for the rotating body according to any one of (1) to (4) is characterized in that, when the control unit determines that the rotating body is in a correct installation state, it rotates the motor for the rotating body at a normal rotation speed, and when it determines that the rotating body is not in a correct installation state, it stops the output to the motor for the rotating body and maintains the output stopped.

[0034] (6) The drive device for a rotating body according to any one of (1) to (5) is characterized in that, when the control unit determines that the rotating body is not in the correct installation state, it stops the output to the motor for the rotating body, and the drive device for the rotating body has a storage unit that stores the result that the rotating body is not in the correct installation state. When the result that the rotating body is not in the correct installation state is stored in the storage unit, even if there is an input that the rotation of the rotating body starts, the control unit maintains the stop of the output to the motor for the rotating body.

[0035] (7) The drive device for a rotating body according to any one of (1) to (6) is characterized in that, when the control unit determines that the rotating body is not in the correct installation state, it stops outputting to the motor for the rotating body, and the drive device for the rotating body has a storage unit that stores the result that the rotating body is not in the correct installation state. When the result that the rotating body is not in the correct installation state is stored in the storage unit, even if there is an input that the rotation of the rotating body starts, the control unit maintains the stop of outputting to the motor for the rotating body and does not perform the determination of the installation state of the rotating body again.

[0036] (8) The drive device for a rotating body according to any one of (1) to (7) is characterized in that, when the control unit determines that the rotating body is not in the correct installation state, it stops the output to the motor for the rotating body, and the drive device for the rotating body has a storage unit that stores the result that the rotating body is not in the correct installation state. When the result that the rotating body is not in the correct installation state is stored in the storage unit, even if there is an input that the rotation of the rotating body starts, the control unit maintains the stop of the output to the motor for the rotating body and reports again through the reporting unit.

[0037] (9) According to any one of (1) to (8), if there is an input from the input unit indicating that the rotation of the rotating body has stopped, the control unit resets the storage of the result in the storage unit that the rotating body is not in the correct installation state.

[0038] According to the drive device for the rotating body of the present invention, if the installation state of the rotating body is incorrect, the reporting unit reports and determines that the rotation speed is lower than the normal rotation speed of the rotating body. Therefore, it is possible to detect that the installation state of the rotating body is incorrect before the rotating body rotates at the normal rotation speed and the motor shaft and the shaft insertion hole of the rotating body are engaged. Attached Figure Description

[0039] Figure 1This is the front view of the fog collection device.

[0040] Figure 2 yes Figure 1 The diagram shows a cross-sectional view (AA) of the fog collection device.

[0041] Figure 3 yes Figure 2 Enlarged cross-sectional view of part B of the fog collection device shown.

[0042] Figure 4 This is a block diagram used to explain the motor drive control of a rotating body.

[0043] Explanation of reference numerals in the attached figures

[0044] 5… Rotating body; 5a… Shaft insertion hole; 6… Motor for rotating body; 6a… Motor shaft; 11… Motor drive unit; 12… Control unit; 13… Input unit; 13a… Rotation start operation button; 13b… Rotation stop operation button; 14… Reporting unit; 15… Storage unit. Detailed Implementation

[0045] based on Figure 1 and Figure 2 The overall structure of the fog collection device equipped with the driving device of the rotating body of the present invention will be described.

[0046] Figure 1 This is the front view of the fog collection device. Figure 2 yes Figure 1 The diagram shows a cross-sectional view (AA) of the fog collection device.

[0047] The fog collection device 1 includes a fan 3 that generates airflow within the device body 2, a fan motor 4 that rotates the fan 3, a rotating body 5 that is rotatably disposed within the device body 2 and has multiple holes for airflow, and a rotating body motor 6 that rotates the rotating body 5. The fan 3 is rotated to collect fog into the device body 2, and the fog is passed through the holes of the rotating body 5, thereby removing foreign matter contained in the fog and discharging fog without foreign matter outside the device body 2.

[0048] The mist-collecting device 1 of this embodiment is a range hood that collects and discharges fumes and other fumes generated during cooking by a heating cooker. The main body 2 of the device is a fume hood, and the rotating body 5 with holes is a filter.

[0049] The fog collection device 1 is not limited to range hoods. Fog refers to liquids such as water vapor and oil, and the fog collection device can also be the following devices.

[0050] A fume collection device installed near a heating cooker to capture fumes, steam, and other pollutants generated during cooking.

[0051] A dehumidifier that removes moisture from the air.

[0052] A collection device that draws in indoor air and mist and is placed in the middle of the duct or at the end of the duct.

[0053] The rotating body 5 and the rotating body motor 6 constitute the driving device for the rotating body of the present invention.

[0054] The following describes an embodiment of the drive device for the rotating body.

[0055] based on Figure 3 The mounting structure of the rotating body in the driving device of the rotating body is described. Figure 3 yes Figure 2 Enlarged sectional view of section B in the image.

[0056] like Figure 3 As shown, the rotating body 5 has a shaft insertion hole 5a through which the motor shaft 6a of the rotating body motor 6 is inserted, so that the shaft insertion hole 5a is fitted with the motor shaft 6a, and the rotating body 5 is locked by the locking mechanism 7 in such a way that the rotating body 5 will not fall off the motor shaft 6a, thereby installing the rotating body 5 on the motor shaft 6a.

[0057] By releasing the lock based on the locking mechanism 7, the rotating body 5 can be pulled out and disassembled from the motor shaft 6a.

[0058] The rotating body 5 and the rotating body motor 6 constitute the driving device for the rotating body of the present invention.

[0059] The following describes an embodiment of the drive device for the rotating body.

[0060] based on Figure 3 The mounting structure of the rotating body in the driving device of the rotating body is described. Figure 3 yes Figure 2 Enlarged sectional view of section B in the image.

[0061] like Figure 3 As shown, the rotating body 5 has a shaft insertion hole 5a through which the motor shaft 6a of the rotating body motor 6 is inserted and a boss groove 5b. By fitting the shaft insertion hole 5a into the motor shaft 6a, the motor pin 6b provided on the motor shaft 6a is fitted into the boss groove 5b. The rotating body 5 is locked in such a way that it will not fall off the motor shaft 6a by the locking mechanism 7, and the rotating body 5 is installed on the motor shaft 6a.

[0062] By releasing the lock based on the locking mechanism 7, the rotating body 5 can be pulled out and disassembled from the motor shaft 6a.

[0063] The locking mechanism 7 is the same as the loading and unloading device disclosed in Japanese Patent No. 7248340. It can move the locking piece 7a to a locked position where it engages with the small diameter portion 6c of the motor shaft 6a and to a locked-out position where it is released from the lock. The locking piece 7a is held in the locked position by a spring or the like. When the shaft insertion hole 5a of the rotating body 5 is engaged with the motor shaft 6a, the locking piece 7a moves to the locked-out position against the spring. When the rotating body 5 is pressed along the motor shaft 6a, the locking piece 7a moves to the small diameter portion 6c of the motor shaft 6a and thus moves to the locked position where it engages with the small diameter portion 6c. The rotating body 5 is locked in such a way that it will not fall off the motor shaft 6a.

[0064] By manually moving the locking piece 7a to the unlocked position, the rotating body 5 can be pulled out from the motor shaft 6a.

[0065] The locking mechanism 7 is not limited to this structure. For example, it can be a structure in which a threaded groove is formed at the front end of the motor shaft 6a, the nut is screwed into the threaded groove to lock the rotating body 5 in a way that prevents it from falling off, and the rotating body 5 can be released by loosening the nut. Alternatively, it can be a structure in which a locking pin is inserted into the motor shaft 6a through the rotating body 5 to prevent the rotating body 5 from falling off, and the locking pin is pulled out of the motor shaft 6a to release the lock and pull the rotating body 5 out of the motor shaft 6a.

[0066] based on Figure 4 The drive control of the rotating body motor 6 will be explained. Figure 4 This is a block diagram used to explain the motor drive control of a rotating body.

[0067] like Figure 4 As shown, it includes a power supply 10, a motor drive unit 11, a control unit 12, an input unit 13 for inputting rotation start and rotation stop to the control unit 12, a reporting unit 14, and a storage unit 15.

[0068] The motor drive unit 11 supplies current to the rotating body motor 6 to make the rotating body motor 6 rotate.

[0069] The control unit 12 sends the rotational speed of the rotating body motor 6 to the motor drive unit 11.

[0070] The motor drive unit 11 supplies the rotating body motor 6 with a current of intensity (current value) that causes the rotating body motor 6 to rotate at the transmitted rotational speed.

[0071] The rotating body is driven by motor 6, which rotates at a speed corresponding to the intensity (current value) of the current supplied from motor drive unit 11, and at a speed transmitted from control unit 12.

[0072] That is, the control unit 12 can control the rotation speed of the rotating body motor 6.

[0073] The rotating body motor 6 has the function of feeding back the rotational speed (rotational speed of motor shaft 6a) to the control unit 12, and this function has a detection unit for detecting the rotational speed of motor shaft 6a.

[0074] As a detection unit for detecting the rotational speed of motor shaft 6a, it can also be a speed detector that directly detects the rotational speed of motor shaft 6a, etc.

[0075] like Figure 1 As shown, the input section 13 is provided on the front surface of the device body 2, and has a rotation start operation button 13a for inputting the start of rotation and a rotation stop operation button 13b for inputting the stop of rotation.

[0076] The implementation is a range hood, so the start operation button 13a is the start button for the range hood, and the stop operation button 13b is the stop button for the range hood. The input unit 13 is equipped with a plurality of other operation buttons for operating the range hood.

[0077] There are range hoods that start operating in conjunction with the heating start of the cooking appliance and stop operating in conjunction with the heating stop of the cooking appliance. In this type of range hood, the control unit 12 can be input with the start of heating of the cooking appliance and with the stop of heating of the cooking appliance.

[0078] For example, the heating cooker sends a heating start signal when heating begins and a heating stop signal when heating ends. A signal receiver is installed in the range hood. If the signal receiver receives the heating start signal, it inputs rotation start to the control unit 12. If the signal receiver receives the heating stop signal, it inputs rotation stop to the control unit 12.

[0079] That is, the heating start and heating end of the heating cooker become the input unit 13 that inputs the rotation start and rotation end to the control unit 12.

[0080] If the input unit 13 inputs the start of rotation to the control unit 12, the control unit 12 sends the rotational speed of the rotating body motor 6 to the motor drive unit 11, and the motor drive unit 11 supplies the rotating body motor 6 with a current of an intensity that causes it to rotate at the rotational speed sent from the control unit 12, and the rotating body motor 6 rotates at the rotational speed sent from the control unit 12.

[0081] If the input unit 13 inputs a rotation stop signal to the control unit 12, the control unit 12 sets the rotation speed of the rotating body motor 6 to zero, that is, stops sending rotation speed to the motor drive unit 11, and the motor drive unit 11 stops supplying current to the rotating body motor 6, thus stopping the rotation of the rotating body motor 6.

[0082] Thus, the output to the rotating body motor 6 is controlled by the control unit 12. If the rotational speed sent from the control unit 12 is zero, the output to the rotating body motor 6 becomes zero, that is, the rotating body motor 6 stops. After the rotating body motor 6 stops, the motor shaft 6a rotates due to inertial torque, and then stops rotating.

[0083] Next, the procedure for determining the installation status of the rotating body 5 will be explained.

[0084] In the following description, a correct installation state of the rotating body 5 means that the motor pin 6b is engaged with the boss groove 5b, and the rotating body 5 is installed in a state where it rotates integrally with the motor shaft 6a. An incorrect installation state of the rotating body 5 means that the motor pin 6b is not engaged with the boss groove 5b, the rotating body 5 is installed in a state where it can rotate relative to the motor shaft 6a, and the rotating body 5 is not installed on the motor shaft 6a.

[0085] If the rotating body 5 is not installed correctly, the rotating body will rotate at high speed with the motor 6. The motor shaft 6a will rotate relative to the rotating body 5, causing the rotating body 5 to move slightly (loosen) relative to the motor shaft 6a. The motor shaft 6a and the shaft insertion hole 5a will rub against each other, generating strong friction and scratches. This part will melt due to frictional heat, making it impossible or difficult to disassemble the rotating body 5.

[0086] Whether the installation state of the rotating body 5 is correct or incorrect depends on the installation structure of the rotating body 5 described above, and is not limited to this description when the installation structure of the rotating body 5 is different.

[0087] The operation input unit 13 inputs the start of rotation of the rotating body 5 to the control unit 12 via the operation button 13a. Upon receiving the start of rotation input, the control unit 12 sends the determination of the rotational speed of the rotating body motor 6 to the motor drive unit 11. The motor drive unit 11, upon receiving the determination of the rotational speed, supplies the rotating body motor 6 with a current of the intensity (current value) required to rotate at the determination of the rotational speed. Thus, the rotating body motor 6 rotates at the determination of the rotational speed, and the motor shaft 6a rotates at the determination of the rotational speed. The rotational speed of the motor shaft 6a is fed back to the control unit 12.

[0088] The rotational speed used for judgment refers to a speed lower than the normal rotational speed, such as a speed at which the shaft insertion hole 5a of the rotating body 5 will not engage with the motor shaft 6a even if the rotating body motor 6 rotates in an incorrect installation state. For example, a speed of 1000 rpm or less, more preferably 500 rpm or less.

[0089] Rotational speed usually refers to the rotational speed set according to the purpose of rotating the body when the rotating body is rotated by the driving device of the rotating body.

[0090] At this time, the control unit 12 gradually accelerates the rotational speed sent to the motor drive unit 11 from zero to the judgment rotational speed, and the motor drive unit 11 gradually increases the current supplied to the rotating body motor 6 from zero to a predetermined intensity, so the rotating body motor 6 slowly rises to the judgment rotational speed.

[0091] Therefore, even if the rotating body 5 is not installed correctly, it is possible to prevent the shaft insertion hole 5a of the rotating body 5 from seizing with the motor shaft 6a.

[0092] That is, if the rotating body motor 6 rises rapidly to the speed of judgment, sometimes the shaft insertion hole 5a of the rotating body 5 may get stuck with the motor shaft 6a if the installation state of the rotating body 5 is not correct.

[0093] If the rotational speed of the motor shaft 6a fed back to the control unit 12 becomes the judgment rotational speed, the control unit 12 will reduce the rotational speed sent to the motor drive unit 11 from the judgment rotational speed to zero.

[0094] The motor drive unit 11 reduces the intensity of the current supplied to the rotating body motor 6 to zero.

[0095] As a result, the current supplied to the rotating body motor 6 becomes zero, and the output to the rotating body motor 6 stops.

[0096] That is, after the rotational speed of the rotating body motor 6 rises to the judgment rotational speed, the control unit 12 reduces the output to the rotating body motor 6 to zero.

[0097] As a result, no current is supplied to the rotating body motor 6, so the motor shaft 6a rotates only by the inertial torque of the motor shaft 6a and the inertial torque of the rotating body 5 (hereinafter referred to as the inertial torque of the motor shaft 6a).

[0098] Afterwards, the control unit 12 measures the time from the start of the output to the rotating body motor 6. After a specified time has elapsed, it compares the rotational speed of the motor shaft 6a fed back from the rotating body motor 6 with the preset specified rotational speed. If the rotational speed of the motor shaft 6a is below the specified rotational speed, it is determined that the installation state of the rotating body 5 is incorrect.

[0099] That is, if the installation state of the rotating body 5 is incorrect, the rotating body 5 and the motor shaft 6a rotate relative to each other. Therefore, the inertial torque of the motor shaft 6a is small, and the time until the motor shaft 6a stops rotating is short. As a result, the rotational speed of the motor shaft 6a becomes slower than the specified rotational speed after a specified time.

[0100] If the control unit 12 determines that the installation state of the rotating body 5 is incorrect, it reports the result of the incorrect installation state of the rotating body 5 through the reporting unit 14, and stores the result of the incorrect installation state of the rotating body 5 in the storage unit 15.

[0101] Reporting unit 14 is a unit that uses sound, light, voice generator, display unit, etc. to report the result that the installation status of the rotating body 5 is incorrect.

[0102] In addition, the report from reporting unit 14 can be a temporary report or a continuous report, such as continuously keeping the light on.

[0103] Alternatively, the reporting unit 14 can be configured as a smartphone or a remote control for remotely operating the drive device of the rotating body. The result of incorrect installation of the rotating body 5 can be reported by sending information indicating that the installation status of the rotating body 5 is incorrect to the smartphone or the remote control.

[0104] Thus, if the installation state of the rotating body 5 is incorrect, the reporting unit 14 will report and determine that the rotation speed is lower than the normal rotation speed of the rotating body 5. Therefore, it can detect that the installation state of the rotating body 5 is incorrect before the rotating body 5 rotates at the normal rotation speed and the motor shaft 6a and the shaft insertion hole 5a of the rotating body 5 are engaged.

[0105] Furthermore, the reporting unit 14 reports even when the rotating body 5 is not installed on the motor shaft 6a, thus enabling the detection that the rotating body 5 was forgotten to be installed.

[0106] Furthermore, if the control unit 12 determines that the installation state of the rotating body 5 is incorrect, it maintains the output to the rotating body motor 6 and stops it.

[0107] Therefore, if the rotating body 5 is not in the correct installation state, the rotating body 5 will continue to stop even after the installation state is determined, and will not rotate at the normal rotation speed. This can prevent the motor shaft 6a from getting stuck in the shaft insertion hole 5a of the rotating body 5, and can also prevent the rotating body 5 from continuing to rotate in an incorrect installation state and coming into contact with other parts and being damaged.

[0108] If the rotational speed of the motor shaft 6a is faster than the specified rotational speed, the control unit 12 determines that the installation state of the rotating body 5 is correct.

[0109] That is, when the rotating body 5 is installed correctly, the rotating body 5 and the motor shaft 6a rotate as one. Therefore, the inertia of the motor shaft 6a is large, and the time until the motor shaft 6a stops rotating is long. Therefore, the rotation speed of the motor shaft 6a is faster than the specified rotation speed after a specified time.

[0110] When the control unit 12 determines that the installation state of the rotating body 5 is correct, the control unit 12 sends the normal rotation speed to the motor drive unit 11, and the motor drive unit 11 supplies the rotating body motor 6 with a current of intensity that causes the rotating body motor 6 to rotate at the normal rotation speed, and the rotating body motor 6 rotates at the normal rotation speed.

[0111] Therefore, when the rotating body 5 is installed on the motor shaft 6a in the correct installation state, the rotating body 5 automatically rotates at the normal rotation speed without any operation after the installation state of the rotating body 5 is determined, so there is no need for special operation to make the rotating body 5 rotate at the normal rotation speed.

[0112] The rotational speed of the motor shaft 6a after a specified time elapsed since the output of the motor 6 to the rotating body stops differs significantly between the case where the rotating body 5 is correctly installed and the case where the rotating body 5 is incorrectly installed, thus enabling a more accurate determination of the installation status of the rotating body 5.

[0113] That is, after the output of the motor 6 to the rotating body stops, the motor shaft 6a rotates only by inertia. Therefore, the motor shaft 6a and the rotating body 5 rotate as one, and the rotating body 5 with greater inertia rotates faster after a specified time when it is in the correct installation state. The rotating body 5 with less inertia rotates relative to the motor shaft 6a and the rotating body 5, and its rotation speed is slower after a specified time when it is in the incorrect installation state. The speed difference is large, and it is easy to judge whether the installation state of the rotating body 5 is correct or incorrect. Therefore, it can be judged accurately.

[0114] The installation status of the rotating body 5 can also be determined as follows.

[0115] Instead of reducing the output of the rotating body motor 6 to a stop, after a specified time has elapsed after reducing it to a specified output, the rotational speed of the motor shaft 6a fed back from the rotating body motor 6 is compared with a preset specified rotational speed. If the rotational speed of the motor shaft 6a is below the specified rotational speed, it is determined that the installation state of the rotating body 5 is incorrect.

[0116] The specified output is preferably based on the fact that the rotational force of the rotating body motor 6 supplied with current is less than the inertial torque of the rotating motor shaft 6a, and the motor shaft 6a decelerates due to the inertial torque and stops over time.

[0117] The specified time in this case is preferably shorter than the specified time for the previously described case where the output of the motor 6 for the rotating body is reduced to a stop.

[0118] Explain the action of making such a judgment.

[0119] Similar to the previous description, after the rotational speed of the rotating body motor 6 is increased to the judgment rotational speed, and the rotational speed of the motor shaft 6a (rotational speed of the rotating body motor 6) fed back to the control unit 12 is increased to the judgment rotational speed, the control unit 12 reduces the rotational speed of the rotating body motor 6 sent to the motor drive unit 11 from the judgment rotational speed to a predetermined rotational speed greater than zero, and the motor drive unit 11 reduces the intensity of the current supplied to the rotating body motor 6 to a predetermined current intensity slightly stronger than zero, and sets the rotational speed of the rotating body motor 6 to a predetermined rotational speed slower than the judgment rotational speed, thereby reducing the output to the rotating body motor 6 to a predetermined output.

[0120] The control unit 12 measures the time from when the rotational speed of the motor shaft 6a fed back from the rotating body motor 6 reaches a predetermined rotational speed (i.e., from when the output to the rotating body motor 6 decreases to a predetermined output). After the predetermined time has elapsed, the control unit 12 compares the rotational speed of the motor shaft 6a fed back from the rotating body motor 6 with the predetermined rotational speed. If the rotational speed of the motor shaft 6a is below the predetermined rotational speed, it determines that the installation state of the rotating body 5 is incorrect. The control unit 12 reports this through the reporting unit 14 and stores the result that the installation state of the rotating body 5 is incorrect in the storage unit 15.

[0121] Furthermore, the control unit 12 does not send the rotational speed of the rotating body motor 6 to the motor drive unit 11, but stops the output to the rotating body motor 6 and maintains the output stopped.

[0122] The specified rotational speed in this case is preferably slower than the specified rotational speed in the case where the output of the motor 6 to the rotating body is reduced to a stop, as previously described.

[0123] The actions taken after determining the installation status of the rotating body 5 are the same as those described previously.

[0124] The installation status of the rotating body 5 can be determined as follows.

[0125] As previously described, after the rotational speed of the rotating body motor 6 rises to the judgment rotational speed, the control unit 12 reduces the rotational speed of the rotating body motor 6 sent to the motor drive unit 11 from the judgment rotational speed to a predetermined rotational speed, and reduces the intensity of the current supplied from the motor drive unit 11 to the rotating body motor 6 to a predetermined intensity, thereby decelerating the rotational speed of the rotating body motor 6 to the predetermined rotational speed and reducing the output of the rotating body motor 6 to a predetermined level.

[0126] That is, after the rotational speed of the rotating body motor 6 rises to the judgment rotational speed, the control unit 12 reduces the output to the rotating body motor 6 to the specified output.

[0127] Therefore, the rotational speed of the motor shaft 6a of the rotating body motor 6 is reduced from the determined rotational speed to the specified rotational speed, and then rotates at the specified rotational speed.

[0128] If the rotational speed of the motor shaft 6a fed back becomes the predetermined rotational speed (that is, after the rotational speed of the rotating body motor 6 sent to the motor drive unit 11 decreases from the judgment rotational speed to the predetermined rotational speed), the control unit 12 monitors the manner in which the rotational speed of the motor shaft 6a fed back by the rotating body motor 6 decreases. If the rotational speed of the motor shaft 6a decreases quickly, it is determined that the rotating body 5 is not in the correct installation state. If the rotational speed of the motor shaft 6a decreases slowly, it is determined that the rotating body 5 is in the correct installation state.

[0129] That is, the way in which the rotational speed of the rotating body 5 decreases refers to the speed at which it decelerates per unit time (speed reduction gradient). If the rotating body 5 is installed correctly, the rotating body 5 and the motor shaft 6a rotate as one. Therefore, the inertial torque (rotational resistance) of the motor shaft 6a is large, the speed at which it decelerates per unit time is slow (speed reduction gradient is gentle), and the way in which the rotational speed of the motor shaft 6a decreases is slow.

[0130] If the rotating body 5 is not installed correctly, it will rotate relative to the motor shaft 6a. Therefore, the inertial torque (rotational resistance) of the motor shaft 6a is small, the deceleration rate per unit time is fast (the speed reduction gradient is steep), and the rotational speed of the motor shaft 6a decreases quickly.

[0131] At this time, the specified rotational speed of the rotating body motor 6 only needs to be slower than the speed used for judgment, but it is preferable to set it to the speed at which the motor shaft 6a decelerates due to the inertial torque. That is, it is preferable to set the intensity of the current supplied to the rotating body motor 6 to the speed at which the motor shaft 6a of the rotating body motor 6 decelerates due to the inertial torque.

[0132] In this way, the way in which the rotational speed of the motor shaft 6a decreases from the specified rotational speed differs significantly depending on whether the installation state of the rotating body 5 is correct or incorrect, thus making it easier to determine the installation state of the rotating body 5.

[0133] For example, the speed at which the rotational speed of the motor shaft 6a decreases when the rotating body 5 is correctly installed is compared with the speed of the previously set decrease. If the speed of the currently monitored decrease of the rotational speed of the motor shaft 6a is higher than the speed of the previously set decrease, it is determined that the installation state of the rotating body 5 is incorrect; if it is lower than the speed of the previously set decrease, it is determined that the installation state of the rotating body 5 is correct.

[0134] The actions taken after determining the installation status of the rotating body 5 are the same as those described previously.

[0135] Furthermore, although detailed explanations are omitted, the installation status of the rotating body 5 can be determined by reducing the output to the rotating body motor 6 to zero after the rotational speed of the rotating body motor 6 rises to the judgment rotational speed and the rotational speed of the motor shaft 6a decreases after the output stops.

[0136] Based on the above description, the operation for determining the installation state of the rotating body 5 in the drive device of the rotating body of the present invention is as follows: if there is an input indicating the start of rotation of the rotating body 5 in the control unit 12, the rotating body motor 6 is rotated at a determination rotation speed that is lower than the normal rotation speed of the rotating body motor 6, and then the output to the rotating body motor 6 is reduced. Based on the change in the rotation state of the motor shaft 6a after the output to the rotating body motor 6 is reduced, it is determined whether the rotating body 5 is in a correct installation state or not.

[0137] The change in rotational state refers to the change in the deceleration state of the rotational speed of the motor shaft 6a, which is determined by the speed of rotation.

[0138] Next, the structure of the control unit 12 will be explained.

[0139] After the control unit 12 determines that the installation state of the rotating body 5 is incorrect, if the user operates the rotation start operation button 13a to make the rotating body 5 rotate, the rotating body 5 may rotate, and sometimes the motor shaft 6a may get stuck in the shaft insertion hole 5a of the rotating body 5, or the rotating body 5 may come into contact with other parts and be damaged.

[0140] To prevent this situation, the control unit 12 is configured as follows.

[0141] The control unit 12 is configured such that, when the storage unit 15 stores the result that the rotating body 5 is not in the correct installation state, and the operation input unit 13 inputs the start of rotation of the rotating body 5 to the control unit 12 via the operation button 13a, it does not send the rotation speed of the rotating body motor 6 to the motor drive unit 11, but maintains the output to the rotating body motor 6 stopped.

[0142] If it is the control unit 12 of this structure, after the control unit 12 determines that the installation state of the rotating body 5 is incorrect, even if the user inputs the start of rotation of the rotating body 5 from the input unit 13 to the control unit 12, the control unit 12 will not supply current to the rotating body motor 6 from the motor drive unit 11, and the rotating body motor 6 will not rotate.

[0143] Therefore, even if the rotation start signal for the rotating body 5 is input again from the input unit 13 to the control unit 12 when the rotating body 5 is not in the correct installation state, the rotating body 5 will not rotate. This prevents the motor shaft 6a from getting stuck in the shaft insertion hole 5a of the rotating body 5 and prevents the rotating body 5 from coming into contact with other parts and being damaged.

[0144] If the installation status of the rotating body 5 is determined to be incorrect after the user operates the rotation start operation button 13a to rotate the rotating body 5, the previously described determination of the installation status of the rotating body 5 may be performed, which may sometimes apply a load to the rotating body 5 and cause discomfort to the user.

[0145] To prevent this situation, the control unit 12 is configured as follows.

[0146] The control unit 12 is configured such that, when the storage unit 15 stores the result that the rotating body 5 is not in the correct installation state, and the user inputs the start of rotation of the rotating body 5 to the control unit 12 by operating the operation button 13a of the operation input unit 13, the rotation speed of the rotating body motor 6 is not sent to the motor drive unit 11, and the installation state judgment operation of the rotating body 5 is not performed again.

[0147] If it is the control unit 12 of this structure, after determining that the installation state of the rotating body 5 is incorrect, when the user inputs the start of rotation of the rotating body 5 to the control unit 12 by using the operation button 13a of the operation input unit 13, the current is not supplied from the motor drive unit 11 to the rotating body motor 6, the rotating body motor 6 will not rotate, and the installation state judgment action of the rotating body 5 will not be performed again.

[0148] Therefore, if it is determined that the installation state of the rotating body 5 is incorrect, the determination of the installation state of the rotating body 5 will not be performed again, thus reducing the load involved in determining the installation state of the rotating body 5.

[0149] The actions that occur during the determination of the installation state of the rotating body 5 will not be performed repeatedly, so the user will not feel uncomfortable due to repeated actions during the determination.

[0150] If the user determines that the installation state of the rotating body 5 is incorrect and the rotating body 5 does not rotate when the user operates the rotation start operation button 13a in order to rotate the rotating body 5, the user may feel uncomfortable.

[0151] To prevent this situation, the control unit 12 is configured as follows.

[0152] The control unit 12 is configured such that, when the storage unit 15 stores the result that the rotating body 5 is not in the correct installation state, and the operation input unit 13 inputs the start of rotation of the rotating body 5 by the operation button 13a, it does not send the rotation speed of the rotating body motor 6 to the motor drive unit 11, but maintains the output to the rotating body motor 6 stopped, and reports the result that the installation state of the rotating body 5 is incorrect through the reporting unit 14.

[0153] If it is the control unit 12 of this structure, after determining that the installation state of the rotating body 5 is incorrect, even if the user inputs the start of rotation of the rotating body 5 from the input unit 13 to the control unit 12, the current is not supplied from the motor drive unit 11 to the rotating body motor 6, the rotating body motor 6 will not rotate, and the reporting unit 14 will report again.

[0154] Therefore, although the operation to start the rotation of the rotating body 5 is performed, the rotating body 5 does not rotate, and the incorrect installation state of the rotating body 5 can be detected by the report from the reporting unit 14, thus preventing the user from feeling uneasy.

[0155] If the control unit 12 is in a state where the storage unit 15 stores the result that the rotating body 5 is not in the correct installation state, even if the rotation start operation button 13a of the operation input unit 13 does not perform the action of judging the installation state of the rotating body 5, then after judging that the installation state of the rotating body 5 is incorrect, when the user disassembles and reinstalls the rotating body 5, the installation state of the rotating body 5 cannot be judged.

[0156] To prevent this situation, the control unit 12 is configured as follows.

[0157] The configuration is such that if the storage unit 15 stores the result that the rotating body 5 is not in the correct installation state, and the rotation stop operation button 13b of the input unit 13 inputs the rotation stop of the rotating body 5 to the control unit 12, then the storage of the result that the rotating body 5 is not in the correct installation state in the storage unit 15 is reset.

[0158] If it is the control unit 12 of this structure, after determining that the installation state of the rotating body 5 is incorrect, the storage of the result that the rotating body 5 is not in the correct installation state is reset by using the rotation stop operation button 13b of the user operation input unit 13. Therefore, the rotation start of the rotating body motor 6 is input to the control unit 12 by the rotation start operation button 13a of the operation input unit 13, and the control unit 12 can determine the installation state of the rotating body 5.

[0159] Therefore, after determining that the installation state of the rotating body 5 is incorrect, if the user disassembles and reinstalls the rotating body 5, the storage of the result that the rotating body 5 is not in the correct installation state is reset by using the rotation stop operation button 13b of the user operation input unit 13. Then, the rotation start of the rotating body motor 6 is input to the control unit 12 by using the rotation start operation button 13a of the operation input unit 13, and the control unit 12 performs the determination of the installation state of the rotating body 5.

[0160] Furthermore, the block diagram used to explain the motor drive control of the rotating body is not limited to... Figure 4 The structure shown is acceptable as long as it can perform the actions described in the instruction manual.

Claims

1. A driving device for a rotating body, wherein the rotating body is mounted by inserting the motor shaft of a motor into a shaft insertion hole of the rotating body, and the rotating body is rotated by rotating the motor, characterized in that, It includes: a control unit for determining the installation status of the rotating body; an input unit for inputting the start and stop of rotation of the rotating body to the control unit; a detection unit for detecting the rotational speed of the motor shaft; and a reporting unit. The control unit determines the installation state of the rotating body as follows: If there is an input indicating the start of rotation of the rotating body in the control unit, after increasing the rotation speed of the rotating body motor to a determination rotation speed lower than the normal rotation speed of the rotating body motor, the output to the rotating body motor is reduced. Based on the change in the rotation state of the motor shaft after reducing the output to the rotating body motor, it is determined whether the rotating body is in a correct installation state or not. If it is determined that the rotating body is in an incorrect installation state, a report is made through the reporting unit.

2. The driving device for a rotating body according to claim 1, characterized in that, If, after a predetermined time has elapsed since the output to the motor for the rotating body has been reduced, the rotational speed of the motor shaft detected by the detection unit is below a predetermined rotational speed, then the rotating body is determined to be in an incorrect installation state, and a report is made through the reporting unit.

3. The driving device for a rotating body according to claim 1, characterized in that, Reduce the output of the motor to the rotating body until it stops. If, after a predetermined time has elapsed since the output of the motor to the rotating body stops, the rotational speed of the motor shaft detected by the detection unit is below a predetermined rotational speed, it is determined that the rotating body is not in an correct installation state, and a report is made by the reporting unit.

4. The driving device for a rotating body according to claim 1, characterized in that, By detecting the rotational speed of the motor shaft by the detection unit, the method of decreasing the rotational speed of the motor shaft after reducing the output to the motor of the rotating body is monitored. If the rotational speed of the motor shaft decreases rapidly, it is determined that the rotating body is not in an correct installation state, and a report is made through the reporting unit.

5. The driving device for a rotating body according to claim 1, characterized in that, If the control unit determines that the rotating body is in the correct installation state, it causes the rotating body motor to rotate at the normal rotation speed. If it determines that the rotating body is not in the correct installation state, it stops the output to the rotating body motor and maintains the output stopped.

6. The driving device for a rotating body according to claim 1, characterized in that, If the control unit determines that the rotating body is not installed correctly, it stops outputting power to the motor of the rotating body. The drive device for the rotating body has a storage unit that stores the result that the rotating body is determined to be in an incorrect installation state. If the storage unit stores a result indicating that the rotating body is not in the correct installation state, the control unit will maintain the stop of the output to the motor of the rotating body even if there is an input indicating that the rotating body is starting to rotate.

7. The driving device for a rotating body according to claim 1, characterized in that, If the control unit determines that the rotating body is not installed correctly, it stops outputting power to the motor of the rotating body. The drive device for the rotating body has a storage unit that stores the result that the rotating body is determined to be in an incorrect installation state. If the storage unit stores a result indicating that the rotating body is not in the correct installation state, the control unit will maintain the output to the motor of the rotating body stopped even if there is an input indicating that the rotating body is starting to rotate, and will not perform the installation state judgment operation of the rotating body again.

8. The driving device for a rotating body according to claim 1, characterized in that, If the control unit determines that the rotating body is not installed correctly, it stops outputting power to the motor of the rotating body. The drive device for the rotating body has a storage unit that stores the result that the rotating body is determined to be in an incorrect installation state. If the storage unit stores a result indicating that the rotating body is not in the correct installation state, the control unit will maintain the output to the motor of the rotating body stopped even if there is an input indicating that the rotating body has started rotating, and will report again through the reporting unit.

9. The driving device for a rotating body according to any one of claims 6 to 8, characterized in that, If there is an input from the input unit indicating that the rotation of the rotating body has stopped, the control unit resets the storage of the result in the storage unit that the rotating body is not in the correct installation state.

10. A fog collection device, characterized in that, A driving device for a rotating body as described in claim 1.

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