WO2022134569A1 - 烘干机 - Google Patents

烘干机 Download PDF

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Publication number
WO2022134569A1
WO2022134569A1 PCT/CN2021/108561 CN2021108561W WO2022134569A1 WO 2022134569 A1 WO2022134569 A1 WO 2022134569A1 CN 2021108561 W CN2021108561 W CN 2021108561W WO 2022134569 A1 WO2022134569 A1 WO 2022134569A1
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WO
WIPO (PCT)
Prior art keywords
drum
induction motor
predetermined time
dryer
opening
Prior art date
Application number
PCT/CN2021/108561
Other languages
English (en)
French (fr)
Inventor
金田隆二
Original Assignee
青岛海尔洗衣机有限公司
Aqua株式会社
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 青岛海尔洗衣机有限公司, Aqua株式会社, 海尔智家股份有限公司 filed Critical 青岛海尔洗衣机有限公司
Publication of WO2022134569A1 publication Critical patent/WO2022134569A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/04—Control of operations performed in washing machines or washer-dryers  non-electrically
    • D06F33/06—Control of operations performed in washing machines or washer-dryers  non-electrically substantially mechanically
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 

Definitions

  • the present invention relates to a dryer.
  • a top open type dryer in which a clothes input port is provided in the upper part of the dryer casing.
  • the drum which is arrange
  • a drum opening into which laundry is taken in and out is formed on the peripheral surface of the drum, and the drum opening is provided so as to be openable and closable by a drum opening and closing cover (for example, refer to Patent Document 1).
  • the clothes can be put in from the clothes input port provided in the upper part of the cabinet, and the clothes can be taken out very easily.
  • the width direction can be freely designed while keeping the diameter of the drum large, so that installation places can be enriched.
  • an inverter motor is used for driving the drum, and the drum can be aligned while the rotation direction and rotation amount of the drum are finely controlled, but the inverter motor is very expensive.
  • the drum if the drum is driven by a relatively inexpensive induction motor, the drum cannot be reversed or the rotation amount of the drum can be finely controlled like an inverter motor, and it is difficult to properly perform the drum pairing. bit.
  • Patent Document 1 Japanese Patent Laid-Open No. 2003-251095
  • an object of the present invention is to appropriately implement drum alignment in a dryer that uses an induction motor to drive the drum.
  • the dryer according to the present invention is characterized by comprising: a box body having a clothes inlet for entering and leaving clothes; a substantially cylindrical drum rotatably disposed in the box body, and a peripheral surface of which is mounted with a A drum opening and closing cover for opening and closing a drum opening for entering and leaving clothes; an induction motor for rotationally driving the drum; and a control unit when a stop command is issued to the induction motor while the drum is rotating Next, the induction motor is controlled to align the drum so that the drum opening and closing cover of the drum is arranged in a range facing the clothes input port of the box.
  • the control unit rotates the drum so that the drum is rotated. After the drum opening and closing cover is stopped slightly ahead of the clothes input port of the case, the drum is positioned while rotating the drum intermittently.
  • the dryer of the present invention includes a drum position detection unit that detects that the drum is at a predetermined rotational position, and when the stop command is issued while the drum is rotating, the The control unit waits until a predetermined time T 1 elapses after the drum position detection unit detects that the drum is at a predetermined rotational position, stops the induction motor, and a predetermined time elapses from the time when the induction motor was stopped.
  • the induction motor is intermittently operated to rotate the drum intermittently, the intermittent operation is terminated when the drum position detection means detects that the drum is at a predetermined rotational position, and thereafter, wait until the elapse of If the predetermined time T 3 is not deviated from the predetermined rotational position of the drum by a predetermined angle ⁇ or more, the drum alignment is terminated.
  • the control unit waits until a predetermined time T 3 elapses from the time when the induction motor is stopped, and when the predetermined rotation position of the drum deviates by a predetermined angle ⁇ or more, Then, the intermittent operation of the induction motor is resumed.
  • the predetermined time T 1 , the predetermined time T 2 , and the intermittent operation are switched based on the rotational load of the induction motor when the stop command is issued.
  • the working time T ON and the non-working time T OFF and the prescribed time T 3 are switched based on the rotational load of the induction motor when the stop command is issued.
  • a rib is formed on the inner peripheral surface of the drum, and when the stop command is issued while the drum is rotating, the drum position sensor detects the The timing at which the induction motor is stopped after a predetermined time T1 elapses after the drum is positioned at a predetermined rotation position is the timing at which the rib will lift the laundry in the drum when the drum rotates.
  • the drum opening and closing cover of the drum can be arranged on the opposite side of the casing.
  • the drum alignment is performed so that the laundry inlets are opposed to each other. Therefore, regardless of the timing at which the stop command is issued while the drum is rotating, the drum opening and closing cover stops near the clothes inlet of the case when the drum is stopped, and the clothes can be easily put in and out of the drum.
  • the drum when the stop command is issued while the drum is rotating, the drum is rotated intermittently while the drum is rotated intermittently after the drum is opened and closed and the drum is rotated to a position slightly ahead of the vicinity of the clothes inlet of the case. Since the position is aligned, the drum can be quickly stopped so that the drum opening and closing cover of the drum is disposed in the range facing the laundry inlet of the case after the stop command is issued while the drum is rotating.
  • the present invention by appropriately setting a value such as the predetermined time T1 used for drum alignment, it is possible to reliably arrange the drum opening and closing cover in a range facing the clothes inlet of the case. Stop the rollers.
  • the senor when the drum is aligned by performing the intermittent operation of the drum, even if the drum opening/closing cover exceeds the range facing the laundry inlet of the box, the sensor can The intermittent operation of the motor is resumed, and the drum is stopped so that the drum opening and closing cover is disposed in the range facing the clothes inlet of the casing.
  • values such as the predetermined time T1 used for drum alignment are switched based on the rotational load of the induction motor when the stop command is issued. Therefore, for example, regardless of the amount of laundry in the drum, it is possible to reliably The drum is stopped so that the drum opening and closing cover is arranged in a range facing the clothes input port of the case.
  • the drum by stopping the induction motor at the timing when the rib is about to lift the laundry in the drum, the drum can be stopped quickly after the stop command is issued.
  • FIG. 1 is a schematic diagram which shows the structure of the dryer 1 which concerns on embodiment of this invention.
  • FIG. 2 shows the output from the magnetic sensor 12 when the drum rotates.
  • FIG. 3( a ) is a diagram showing the rotational position of the drum at time t 1 when the magnetic sensor 12 detects the first magnet 11 a
  • FIG. 3( b ) shows the detection of the second magnet 11 b by the magnetic sensor 12 A graph of the drum rotational position at the time point of time t2 .
  • FIG. 4 is a diagram showing the relationship between the rotational speed of the induction motor 6 and the load.
  • FIG. 5 is a block diagram showing an electrical configuration of the dryer 1 according to the present embodiment.
  • FIG. 6 is a flowchart showing the flow of drum alignment performed in the dryer 1 of the present embodiment.
  • FIG. 7 is a diagram showing a circuit for sensing the frequency of a power supply.
  • FIG. 8 is a diagram illustrating control when a stop command is issued in the dryer 1 according to the present embodiment.
  • FIG. 9( a ) is a diagram showing the relationship between the rotational speed of the drum 3 and the load amount
  • FIG. 9( b ) is a diagram showing the relationship between the predetermined time T 1 and the load amount.
  • FIG. 10 is a diagram showing the relationship between the time T 2 ′ until the drum 3 actually stops and the load amount.
  • FIG. 11 is a diagram illustrating the intermittent operation of the drum 3 .
  • FIG. 12( a ) is a diagram showing the relationship between the predetermined time T ON and the load amount
  • FIG. 12( b ) is a diagram showing the relationship between the predetermined time T OFF and the load amount.
  • FIG. 13 is a diagram illustrating the operation until the drum actually stops after the intermittent operation of the drum 3 is stopped.
  • FIG. 14 is a graph showing the relationship between the temperature in the drum 3 and the load amount.
  • the dryer 1 of the present embodiment is a circulation type dryer, and includes a box-shaped casing 2 and a drum 3 arranged in the casing 2 .
  • the dehumidification mechanism (heater, a blower fan, a heat pump, etc.) for removing moisture from the laundry in the drum 3 is arrange
  • FIG. 1 shows the state which the opening and closing cover 2c of the laundry input port 2a of the box 2 and the drum opening and closing cover 3c of the drum 3 are opened.
  • the box 2 shown in FIG. 1 has a substantially rectangular parallelepiped shape.
  • the upper surface of the box 2 is formed with a laundry inlet 2a through which the laundry is taken in and out of the drum 3, and an opening and closing lid 2c capable of opening and closing the laundry inlet 2a is attached.
  • the cabinet 2 is provided with an operation unit 18 (see FIG. 5 ) that includes a power button, a pause button, a button for performing various setting operations related to the drying operation, a start button for performing an operation start operation, and the like.
  • a drum 3 having a substantially cylindrical peripheral surface for accommodating clothes is arranged in the case 2 .
  • the drum 3 is pivotally supported so as to be rotatable about a horizontal axis.
  • the main shaft 5 is connected to the back surface of the drum 3, and this main shaft 5 is rotatably supported by the bearing which is not shown in figure.
  • the main pulley 5 a is attached to the main shaft 5 .
  • An induction motor 6 is provided at the bottom of the casing 2 , and a motor pulley 6 a is attached to the rotating shaft of the induction motor 6 .
  • the rotational power of the motor pulley 6a is transmitted to the main pulley 5a via the power transmission belt 8 . Thereby, when the induction motor 6 is driven, the drum 3 rotates about the main shaft 5a.
  • a drum opening 3a through which laundry is taken in and out of the drum 3 is formed on the peripheral surface of the drum 3, and a drum opening and closing cover 3c capable of opening and closing the drum opening 3a is attached.
  • a drum opening and closing cover 3c capable of opening and closing the drum opening 3a is attached.
  • Three lifting ribs 10 are provided on the inner peripheral surface of the drum 3 so as to protrude into the drum 3 .
  • the lift rib 10 is a protrusion for lifting the laundry accommodated in the drum 3 when the drum 3 rotates. Therefore, during the drying process, when the drum 3 is rotated by the driving force of the motor 6, the laundry in the drum 3 is lifted by the lifting ribs 10 and naturally falls.
  • the first magnet 11a and the second magnet 11b are attached to the outer peripheral surface of the drum 3 .
  • the 1st magnet 11a and the 2nd magnet 11b are arrange
  • a magnetic sensor 12 capable of detecting the first magnet 11a and the second magnet 11b is disposed on the bottom of the case 2. As shown in FIG. Therefore, as shown in FIG. 1 , when the drum 3 rotates once counterclockwise, the magnetic sensor 12 detects the second magnet 11b after the first magnet 11a is detected. Therefore, in the dryer 1, the rotation position of the drum 3 when the drum 3 rotates can be sensed by the 1st magnet 11a, the 2nd magnet 11b, and the magnetic sensor 12.
  • the magnetic sensor 12 when the drum 3 is rotating, as shown in FIG. 2 , the magnetic sensor 12 outputs a high output when the first magnet 11 a is detected (time t 1 ), and when the second magnet 11 b is detected (Time t 2 ) A low (Low) output is output.
  • the time from time t1 to time t1 ' at which the magnet 11a is detected next is a drum rotation period.
  • the drum rotation speed N (rpm) is calculated by 60/t a .
  • FIG. 3( a ) shows the drum rotational position (drum angle) at the time t1 when the magnetic sensor 12 detects the first magnet 11 a
  • FIG. 3( b ) shows the detection of the second magnet 11 b by the magnetic sensor 12
  • the drum rotation position (drum angle) at the time point of time t2 .
  • the drum opening-closing cover 3c of the drum 3 is arrange
  • the drum opens and closes the lid when it is between time t1 and time t2 (in the range of high output).
  • 3c is arrange
  • the drum opening and closing cover 3c is arranged in the range facing the laundry inlet 2a of the casing 2
  • the inner system controls the drum 3 to stop the drum 3 (hereinafter, this may be referred to as "roller alignment").
  • the drum 3 when a stop command is issued while the drum 3 is rotating, the drum 3 is rotated so that the drum opening and closing cover 3c is placed in a higher position than the laundry in the cabinet 2
  • the intermittent operation of the drum 3 is performed after the vicinity of the opening 2a, and the rotation of the drum 3 is controlled so that the drum opening and closing cover 3c is positioned opposite to the clothes input opening 2a of the box 2. stop within the range.
  • rotating the drum 3 so that the drum opening and closing cover 3c is arranged slightly in front of the vicinity of the clothes input port 2a of the case 2 means rotating the drum 3 so that the drum opening and closing cover 3c is arranged in the same position as the case 2 . near the range where the clothes input port 2a of 2a faces.
  • the stop instruction refers to, for example, including: a stop instruction automatically provided to end the drying process after a predetermined drying time after the drying process starts, a stop instruction provided when the pause button is operated by the user, A stop command provided when the power button is operated by the user and the power is turned off.
  • the rotational position of the drum 3 when the first magnet 11 a is detected by the magnetic sensor 12 is used as a predetermined rotation of the drum 3 when performing drum alignment. Location.
  • the rotational speed of the induction motor 6 is determined by the power supply frequency, for example, when the load (torque) applied to the induction motor 6 is zero, that is, the rotational speed N 0 of the drum during synchronous rotation is as follows.
  • R is the pulley transmission ratio of the drum 3 and the induction motor 6
  • f is the power frequency (50Hz or 60Hz in the case of Japan)
  • p is the number of poles of the motor.
  • FIG. 5 is a block diagram showing an electrical configuration of the dryer 1 according to the present embodiment.
  • the operation of the dryer 1 is controlled by the control unit 30 including a microcomputer.
  • the control unit 30 includes a central control unit (CPU) in charge of control of the entire system, and a memory is connected to the control unit 30 .
  • the control unit 30 causes the microcomputer to execute a program stored in the memory, thereby performing a predetermined operation, and the memory temporarily stores data and the like used for executing the program.
  • the memory stores the following detailed values, namely, the rotational speed NL at zero load, the rotational speed NH at the maximum rated load (R), the predetermined time T1 or T1L at zero load , and the maximum rated load ( R), the predetermined time T1 is T1H , the predetermined time T2 is T2L when the load is zero, and the predetermined time T2 is T2H when the maximum rated load (R ) is used.
  • the operation unit 18 , the induction motor 6 and the magnetic sensor 12 are connected to the control unit 30 .
  • step S1 the control unit 30 detects that the power supply of the dryer 1 is turned on based on the operation content of the operation unit 18 .
  • step S2 the control part 30 senses the power frequency of the power supply to which the dryer 1 is connected.
  • the power frequency can be sensed using, for example, the circuit shown in FIG. 7 .
  • R1 is a current limiting resistor for preventing overcurrent from flowing through the photocoupler
  • R2 is a resistor for preventing 5V and GND (Ground: wire ground) from flowing when the photocoupler is turned on. Resistor for current limiting of short circuit current.
  • the photocoupler is turned on/off corresponding to the AC power supply, whereby a rectangular wave output corresponding to the frequency of the power supply can be obtained.
  • step S3 the control unit 30 senses that the drying operation of the dryer 1 is started based on the operation content of the operation unit 18 . In this way, the control unit 30 rotates the drum 3 to perform the drying operation.
  • step S4 the control part 30 senses that the stop instruction
  • step S5 the control part 30 memorize
  • step S6 the control part 30 calculates predetermined time T1 based on the power supply frequency f sensed in step S2 and the rotation speed N of the drum 3 when the stop command of the dryer 1 stored in step S5 was issued.
  • the induction motor 6 when a stop command is issued, the induction motor 6 is not stopped immediately, but the magnetic sensor 12 waits until the first magnet 11 a is sensed. After reaching the first magnet 11a, as shown in FIG. 8(b), the induction motor 6 is stopped after a predetermined time T1 has elapsed. Even if the induction motor 6 is stopped while the drum 3 is rotating, the drum 3 continues to rotate due to inertial rotation thereafter, and stops after time T 2 ′ as shown in (c) of FIG. 8 . Therefore, the predetermined time T1 is adjusted so that after the induction motor 6 is stopped, the drum 3 continues to rotate due to inertial rotation, and the drum opening and closing cover 3c stops slightly ahead of the clothes inlet 2a of the casing 2.
  • the induction motor 6 is stopped when the predetermined time T1 elapses after the first magnet 11a is sensed.
  • the drum 3 can be stopped in a shorter time. Therefore, it is preferable that the 1st magnet 11a and the magnetic sensor 12 are arrange
  • the time T 2 ′ for the inertial rotation of the drum 3 is long, and when the load is large, the time T 2 ′ for the inertial rotation of the drum 3 is short. Conversely, when the load is small, the predetermined time T 1 needs to be shortened. Then, it is necessary to set the predetermined time T1 to be long.
  • the rotational speed of the drum 3 (the rotational speed of the induction motor 6 ) has a substantially linear relationship with the load amount. That is, when the rotational speed at zero load (no load) is NL and the rotational speed at the maximum rated load (R) is NH , the relationship between the load r and the rotational speed N is as follows. It should be noted that even if the load is zero, only the torque required to rotate the drum 3 is actually required, so NL and the above-mentioned synchronous rotation speed N 0 are not equal to each other.
  • N NL ⁇ (NL ⁇ NH ) ⁇ r/R ⁇
  • the relationship between the predetermined time T 1 and the load amount is shown in FIG. 9( b ), when the predetermined time T 1 in the case of no load is set as T 1L and the predetermined time T 1 when the rated load (R) is used Assuming T 1H , the relationship between the load amount r and the predetermined time T 1 is as follows.
  • T 1 T 1L + ⁇ (T 1H ⁇ T 1L ) ⁇ r/R ⁇
  • T 1 T 1L + ⁇ (T 1H ⁇ T 1L ) ⁇ (NL ⁇ N)/( NL ⁇ NH ) ⁇
  • the predetermined time T 1 can be calculated from the drum rotational speed N at the time when the stop command is issued. It should be noted that, as described above, the calculated value differs depending on the power supply frequency. Therefore, when the frequency differs depending on the region in the same transmission site as in Japan, it is necessary to measure T 1L , T 1H and the like in advance for each frequency. Use the value corresponding to the power frequency.
  • step S7 the control unit 30 repeatedly determines whether or not the first magnet 11 a has been detected based on the output of the magnetic sensor 12 . When it is determined by the control unit 30 that the first magnet 11a has been detected, the process proceeds to step S8.
  • step S8 the control unit 30 repeatedly determines whether or not the predetermined time T 1 calculated in step S6 has elapsed. When it is determined by the control unit 30 that the predetermined time T1 has elapsed, the process proceeds to step S9.
  • step S9 the control unit 30 stops the induction motor 6 .
  • step S10 the control part 30 calculates predetermined time T2 based on the power supply frequency f sensed in step S2, and the rotation speed N of the drum 3 when the stop command of the dryer 1 was issued.
  • the drum 3 is rotated intermittently after the drum opening/closing cover 3c is adjusted to stop slightly ahead of the vicinity of the clothes inlet 2a of the casing 2, and the drum 3 is aligned.
  • the predetermined time T2 elapses after the induction motor 6 is stopped, it is considered that the drum 3 has stopped, and the intermittent operation of the drum 4 is started.
  • the induction motor 6 After the induction motor 6 is stopped, it waits until the predetermined time T 2 at which the drum 3 should have stopped has elapsed.
  • the shorter the predetermined time T 2 the shorter the time until the drum opening/closing cover 3c is opened, which is preferable, but needs to be longer than the time T 2 ′ until the drum 3 actually stops.
  • the time T2' depends on the load amount, as follows.
  • T 2 ' T 2 ' L - ⁇ (T 2 ' L -T 2 ' H ) ⁇ r/R ⁇
  • the time T 2 ′ is the same as the predetermined time T 1 , if the rotational speed NL when the load is zero, the rotational speed NH when the maximum rated load ( R ) is the maximum rated load (R), and the time T 2 ′ when the load is zero, that is, T 2 are measured in advance ' L and time T 2 ' at the maximum rated load (R), that is, T 2 ' H , the time T 2 ' can be calculated from the drum rotation speed N at the time when the stop command was issued.
  • T 2 ′ T 2 ′ L ⁇ (T 2 ′ L ⁇ T 2 ′ H ) ⁇ ( NL ⁇ N)/( NL ⁇ NH ) ⁇
  • the predetermined time T 2 only needs to be longer than the time T 2 ′. Therefore, it is only necessary to set the ratio by adding a constant time Tc to T 2 ′ or multiplying T 2 ′ by a constant ratio Rt (1 or more). T 2 ' is long enough.
  • T 2 T 2 ′+Tc
  • T 2 T 2 ′ ⁇ Rt
  • the rotation speed N of the drum at the time when the stop command is issued can be determined in advance.
  • the predetermined time T 2 is calculated.
  • T 2 T 2L ⁇ (T 2L ⁇ T 2H ) ⁇ ( NL ⁇ N)/( NL ⁇ NH ) ⁇
  • step S11 the control unit 30 repeatedly determines whether or not the predetermined time T 2 calculated in step S10 has elapsed. When it is determined by the control unit 30 that the predetermined time T2 has elapsed , the process proceeds to step S12.
  • step S12 the control unit 30 calculates a predetermined time T ON based on the power frequency f sensed in step S2 and the rotational speed N of the drum 3 when the instruction to stop the operation of the dryer 1 stored in step S5 is issued.
  • the predetermined time T ON is the time during which the drum 3 is rotationally driven when the drum 3 is intermittently operated.
  • step S13 the control unit 30 calculates a predetermined time T OFF based on the power frequency f sensed in step S2 and the rotational speed N of the drum 3 when the instruction to stop the operation of the dryer 1 stored in step S5 is issued.
  • the predetermined time T OFF is the time during which the drum 3 is not rotationally driven when the drum 3 is intermittently operated.
  • step S14 the control part 30 performs intermittent operation of the drum 3 based on predetermined time T ON and predetermined time T OFF .
  • the induction motor 6 is repeatedly controlled to alternately repeat the operating state for a predetermined time T ON and the non-operating state for a predetermined time T OFF to rotate the drum 3 slowly. That is, in step 11, after the predetermined time T2 has elapsed and the drum 3 is rotated until the drum opening and closing cover 3c is slightly closer to the vicinity of the clothes inlet 2a of the box 2, the drum pairing is performed while the drum 3 is rotated intermittently.
  • the drum opening/closing cover 3c is positioned so as to be located in a range facing the laundry inlet 2a of the casing 2. As shown in FIG.
  • the predetermined time T ON and the predetermined time T OFF are in the opposite relationship as shown in FIG. 12( a ) and FIG. 12( b ).
  • the predetermined time T ON and the predetermined time T OFF are expressed by equations as follows.
  • T ON T ONL + ⁇ (T ONH -T ONL ) ⁇ r/R ⁇
  • T OFF T OFFL ⁇ (T OFFL ⁇ T ONH ) ⁇ r/R ⁇
  • T ON T ONL + ⁇ (T ONH -T ONL ) ⁇ (NL -N)/(NL -NH ) ⁇
  • T OFF T OFFL - ⁇ (T OFFL -T ONH )
  • step S15 the control unit 30 repeatedly determines whether or not the first magnet 11 a has been detected based on the output from the magnetic sensor 12 . When it is determined by the control unit 30 that the first magnet 11a has been detected, the process proceeds to step S16.
  • step S16 the control part 30 stops the intermittent operation of the drum 3 based on predetermined time T ON and predetermined time T OFF .
  • step S17 the control part 30 calculates predetermined time T3 based on the power supply frequency f sensed in step S2 and the rotation speed N of the drum 3 when the operation stop command of the dryer 1 stored in step S5 is issued.
  • the intermittent operation of the drum 3 when the intermittent operation of the drum 3 is performed, as shown in FIG. 13( a ), when the first magnet 11 a is detected by the magnetic sensor 12 , the intermittent operation of the drum 3 is terminated.
  • the drum 3 also performs inertial rotation after the intermittent operation is terminated. Therefore, after the intermittent operation is terminated, wait until the predetermined time T3 elapses and the drum 3 should have stopped. 12.
  • the position deviation angle ⁇ t of the first magnet 11a is detected and the position deviated from the position of the first magnet 11a detected by the magnetic sensor 12 is deviated by a predetermined angle ⁇ or more, the roller alignment is completed.
  • the predetermined time T3 As a calculation method of the predetermined time T3, it is first considered that the predetermined time T ON and the predetermined time T OFF of the above-mentioned intermittent operation of the drum 3 are adjusted so that the inertial rotation angle after the intermittent operation becomes substantially the same.
  • the predetermined time T3 can be a constant value regardless of the load amount.
  • the predetermined time T3 is set to a constant value regardless of the load amount.
  • step S18 the control unit 30 repeatedly determines whether or not a predetermined time T 3 has elapsed after the intermittent operation of the drum 3 is terminated.
  • the control unit 30 determines whether or not a predetermined time T 3 has elapsed after the intermittent operation of the drum 3 is terminated.
  • step S19 the control unit 30 repeatedly determines whether or not the second magnet 11 b has been detected based on the output from the magnetic sensor 12 .
  • the process proceeds to step S14.
  • it progresses to step S20.
  • step S20 the control part 30 complete
  • the dryer 1 of the present embodiment includes: a casing 2 having a clothes inlet 2a for taking in and out of clothes; The drum opening and closing cover 3c for opening and closing the drum opening 3a; the induction motor 6 for rotationally driving the drum 3; The induction motor 6 is controlled to perform the drum alignment so that the drum opening and closing cover 3c of the drum 3 is arranged in a range facing the laundry inlet 2a of the case 2 .
  • drum alignment is performed so that the cover 3c may be arrange
  • the control unit 30 rotates the drum 3 so that the drum opening and closing cover 3c of the drum 3 is in a higher ratio than the drum 3.
  • the drum alignment is performed while the drum 3 is intermittently rotated after the clothes input port of the box is stopped slightly in front.
  • the first magnet 11a, the second magnet 11b, and the magnetic sensor 12, which are drum position detection means for detecting the magnet 11a attached to the outer peripheral surface of the drum 3, are provided, and the drum 3 is stopped when the drum 3 is rotating.
  • the control unit 30 stops the induction motor 6 after the magnetic sensor 12 detects the magnet 11a attached to the outer peripheral surface of the drum 3, waits until a predetermined time T 1 elapses, stops the induction motor 6, and then stops the induction motor 6 after that.
  • the induction motor 6 is intermittently operated to rotate the drum 3 intermittently, and the intermittent operation is terminated when the magnetic sensor 12 detects the magnet 11a attached to the outer peripheral surface of the drum 3, and then waits for When the predetermined time T 3 has elapsed, if the magnet 11 b attached to the outer peripheral surface of the drum 3 is not detected by the magnetic sensor 12 , the drum alignment is completed.
  • the drum opening and closing cover 3c can be reliably disposed opposite to the laundry inlet 2a of the casing 2 Stop the drum 3 in such a way as to be within the set range.
  • the induction motor 6 is restarted when the magnetic sensor 12 detects the magnet 11b attached to the outer peripheral surface of the drum 3 after the predetermined time T 3 elapses from the time when the induction motor 6 is stopped. 6 intermittent operation.
  • the predetermined time T 1 , the predetermined time T 2 , the operating time T ON and the non-operating time T OFF during intermittent operation are switched based on the rotational load of the induction motor 6 when the stop command is issued and the prescribed time T 3 .
  • the predetermined time T1 and the like used for the drum alignment are switched based on the rotational load of the drum 3 when the stop command is issued. Therefore, regardless of the amount of laundry in the drum 3, for example, The drum can be reliably stopped so that the drum opening/closing cover 3c is arranged in the range facing the clothes input port 2a of the casing 2 .
  • the rib 10 is formed on the inner peripheral surface of the drum 3, and when a stop command is issued while the drum 3 is rotating, the magnetic sensor 12 detects the rib attached to the drum 3.
  • the timing when the magnet 11a on the outer peripheral surface waits until a predetermined time T1 elapses and stops the induction motor 6 is the timing when the rib 10 will lift the laundry in the drum 3 when the drum 3 rotates.
  • the drum 3 can be stopped quickly after the stop command is issued.
  • the predetermined time T3 is set to a constant value regardless of the load amount, but it is not limited to this.
  • the predetermined time T 3 may be calculated from the load amount in the same manner as the predetermined time T 1 and the predetermined time T 2 .
  • the formula for calculating the predetermined time T3 from the rotational speed N is as follows.
  • T 3 T 3L + ⁇ (T 3L ⁇ T 3H ) ⁇ ( NL ⁇ N)/( NL ⁇ NH ) ⁇
  • the method of calculating the predetermined time T 1 , the predetermined time T 2 , the predetermined time T ON , and the predetermined time T OFF in proportion to the load has been described, but the present invention is not limited to this.
  • these values are not proportional to the load amount, more accurate control can be performed by dividing the load amount into several levels and determining the optimum value for each level. That is, the optimum value may be set for each range of load amounts different from each other. It should be noted that the same applies to the predetermined time T 3 in the above-mentioned modification.
  • the method of estimating the load amount based on the rotational speed of the drum 3 has been described, but it is not limited to this.
  • a weight sensor may be provided on the main shaft 5 of the drum 3, and the load amount may be directly measured based on the weight of the laundry detected by the weight sensor.
  • the temperature in the drum 3 in the drying process changes as follows according to the load amount. Therefore, a temperature sensor that measures the temperature in the drum 3 may be provided, and the load amount may be estimated based on the temperature in the drum 3 detected by the temperature sensor.
  • the first magnet 11a, the second magnet 11b, and the magnetic sensor 12 are included as the drum position detection means for detecting the rotational position of the drum 3, but the structure of the drum position detection means is arbitrary.
  • the drum position detection unit may be, for example, a camera that photographs the drum 3 .
  • the induction motor 6 when the stop command is issued to the induction motor 6 while the drum 3 is rotating, the induction motor 6 is stopped at the timing when the rib 10 is about to lift the laundry in the drum 3 , but it is not limited to this. It is also possible that the induction motor 6 does not necessarily stop at the timing when the rib 10 is about to lift the laundry in the drum 3 .
  • the lifting rib 10 may not be provided on the inner peripheral surface of the drum 3 , or only one lifting rib 10 may be provided on the inner peripheral surface of the drum 3 of the dryer 1 .
  • the circulation type dryer 1 was demonstrated, it is not limited to this.
  • the present invention can be applied to the following dryers: for example, many ventilation holes are formed on the peripheral surface of the drum 3, during the drying process, the air from the air supply duct is supplied into the drum 3, and the air in the drum 3 passes through The exhaust duct is discharged to the outside of the case 2 .

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
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Abstract

一种能够在使用感应马达驱动滚筒的烘干机中适当地实施滚筒对位的烘干机。本发明的烘干机具备：箱体，具有供衣物出入的衣物投入口；大致圆筒形状的滚筒，旋转自如地配置于箱体内，在其周面配置有能够对供衣物出入的滚筒开口进行开闭的滚筒开闭盖；感应马达，用于对滚筒进行旋转驱动；以及控制单元，在滚筒正在旋转时停止指令被发给了感应马达的情况下，控制感应马达来进行滚筒对位以使滚筒的滚筒开闭盖配置于与箱体的衣物投入口对置的范围内。

Description

烘干机 技术领域
本发明涉及一种烘干机。
背景技术
滚筒式烘干机中有一种在烘干机的箱体上部设置衣物投入口的开顶(top open)式烘干机。在该烘干机中，具有以能绕沿水平方向的旋转轴旋转的方式配置在箱体内的滚筒。在滚筒的周面形成有供衣物出入的滚筒开口，该滚筒开口设置为能由滚筒开闭盖开闭(例如，参照专利文献1)。
在该开顶式烘干机中，能够从设于箱体上部的衣物投入口投入衣物，非常容易取出衣物。此外，能在将滚筒直径保持得大的状态下自由地设计宽度方向，因此能够丰富设置场所。
然而，在开顶式烘干机中，需要在停止滚筒时使设于滚筒的外周面的滚筒开闭盖与箱体上部的衣物投入口对置。因此，停止滚筒时的滚筒对位的控制是不可缺少的。
在专利文献1所记载的烘干机中，对滚筒的驱动使用变频马达，能够一边细微地控制滚筒的旋转方向、旋转量，一边进行滚筒对位，但变频马达非常昂贵。相对于此，在烘干机中，若设为由比较廉价的感应马达来进行滚筒的驱动，则无法如变频马达那样使滚筒反转或细微地控制滚筒的旋转量，难以适当地进行滚筒对位。
现有技术文献
专利文献
专利文献1：日本特开2003－251095号公报
发明内容
发明所要解决的问题
因此，本发明的目的在于，能够在使用感应马达来驱动滚筒的烘干机中适当地实施滚筒对位。
用于解决问题的方案
本发明的烘干机的特征在于，具备：箱体，具有供衣物出入的衣物投入口；大致圆筒形状的滚筒，旋转自如地配置于所述箱体内，在其周面装配有能够对供衣物出入的滚筒开口进行开闭的滚筒开闭盖；感应马达，用于对所述滚筒进行旋转驱动；以及控制单元，在所述滚筒正在旋转时停止指令被发给了所述感应马达的情况下，控制所述感应马达来进行滚筒对位以使所述滚筒的所述滚筒开闭盖配置于与所述箱体的所述衣物投入口对置的范围内。
优选的是，在本发明的烘干机中，在所述滚筒正在旋转时停止指令被发给了所述感应马达的情况下，所述控制单元在使所述滚筒旋转以使所述滚筒的所述滚筒开闭盖在比所述箱体的所述衣物投入口稍靠跟前处停止后，一边使所述滚筒间歇地旋转一边进行滚筒对位。
优选的是，在本发明的烘干机中，具备：滚筒位置检测单元，检测所述滚筒位于规定旋转位置的情况，在所述滚筒正在旋转时所述停止指令被发出的情况下，所述控制单元在由所述滚筒位置检测单元检测到所述滚筒位于规定旋转位置后，等待至经过规定时间T 1，使所述感应马达停止，在从使所述感应马达停止时起经过了规定时间T 2后，使所述感应马达间歇运转而使所述滚筒间歇地旋转，在由所述滚筒位置检测单元检测到所述滚筒位于规定旋转位置的时间点结束所述间歇运转，之后等待至经过规定时间T 3，若未从所述滚筒的规定旋转位置偏离规定角度θ以上，则结束滚筒对位。
优选的是，在本发明的烘干机中，所述控制单元从使所述感应马达停止时起等待至经过规定时间T 3，若从所述滚筒的规定旋转位置偏离了规定角度θ以上，则重新进行所述感应马达的间歇运转。
优选的是，在本发明的烘干机中，基于所述停止指令被发出时的所述感应马达的旋转负荷来切换所述规定时间T 1、所述规定时间T 2、所述间歇运转时的工作时间T ON和不工作时间T OFF以及所述规定时间T 3。
在本发明的烘干机中，在所述滚筒的内周面形成有提升筋，在所述滚筒正在旋转时所述停止指令被发出的情况下，在由所述滚筒位置传感器检测到所述滚筒位于规定旋转位置后等待至经过规定时间T 1而使所述感应马达停止的定时是在所述滚筒旋转时所述提升筋将要举起所述滚筒内的衣物的定时。
发明效果
根据本发明，能在不是由非常昂贵的变频马达来驱动滚筒的烘干机而是由比较廉价的感应马达来驱动滚筒的烘干机中以使滚筒的滚筒开闭盖配置于与箱体的衣物投入口对置的范围内的方式进行滚筒对位。因此，无论在滚筒正在旋转时停止指令在怎样的定时被发出，在滚筒停止时滚筒开闭盖都在箱体的衣物投入口附近停止，能容易地进行衣物相对于滚筒的出入。
根据本发明，在滚筒正在旋转时停止指令被发出的情况下，在滚筒开闭盖使滚筒旋转至比箱体的衣物投入口附近稍靠跟前处后，一边使滚筒间歇地旋转，一边进行滚筒对位，因此能在滚筒正在旋转时停止指令被发出后以使滚筒的滚筒开闭盖配置于与箱体的衣物投入口对置的范围内的方式使滚筒迅速停止。
根据本发明，通过适当地设定在进行滚筒对位时所使用的规定时间T 1等值，能可靠地以使滚筒开闭盖配置于与箱体的衣物投入口对置的范围内的方式停止滚筒。
根据本发明，在通过进行滚筒的间歇运转来进行了滚筒对位的情况下，即使在滚筒开闭盖超过了与箱体的衣物投入口对置的范围内的情况下，也能通过从感应马达的间歇运转起重新进行来以使滚筒开闭盖配置于与箱体的衣物投入口对置的范围内的方式停止滚筒。
根据本发明，基于停止指令被发出时的感应马达的旋转负荷来切换在进行滚筒对位时使用的规定时间T 1等值，因此，例如无论滚筒内的衣物的量如何，都能可靠地以使滚筒开闭盖配置于与箱体的衣物投入口对置的范围内的方式停止滚筒。
根据本发明，通过在提升筋将要举起滚筒内的衣物的定时使感应马达停止，能在停止指令被发出后使滚筒迅速停止。
附图说明
图1是表示本发明的实施方式的烘干机1的结构的示意图。
图2表示滚筒旋转时来自磁传感器12的输出。
图3的(a)是表示由磁传感器12检测到第一磁铁11a的时刻t 1的时间点的滚筒旋转位置的图，图3的(b)是表示由磁传感器12检测到第二磁铁11b的时刻t 2的时间点的滚筒旋转位置的图。
图4是表示感应马达6的转速与负荷的关系的图。
图5是表示本实施方式的烘干机1的电气结构的框图。
图6是表示本实施方式的烘干机1中进行的滚筒对位的流程的流程图。
图7是表示感测电源频率的电路的图。
图8是对本实施方式的烘干机1中停止指令被发出时的控制进行说明的图。
图9的(a)是表示滚筒3的转速与负荷量的关系的图，图9的(b)是表示规定时间T 1与负荷量的关系的图。
图10是表示滚筒3实际停止为止的时间T 2’与负荷量的关系的图。
图11是对滚筒3的间歇运转进行说明的图。
图12的(a)是表示规定时间T ON与负荷量的关系的图，图12的(b)是表示规定时间T OFF与负荷量的关系的图。
图13是对停止滚筒3的间歇运转后直至滚筒实际停止为止的动作进行说明的图。
图14是表示滚筒3内的温度与负荷量的关系的图。
附图标记说明
1：烘干机；2：箱体；2a：衣物投入口；3：滚筒；3a：滚筒开口；3c：滚筒开闭盖；6：感应马达；10：提升筋；11a：第一磁铁(滚筒位置传感器)；11b：第二磁铁(滚筒位置传感器)；12：磁传感器(滚筒位置传感器)；30：控制部(控制单元)。
具体实施方式
以下，基于附图对本发明的实施方式的烘干机1进行详细说明。
本实施方式的烘干机1是循环式烘干机，具备箱形的箱体2和配置于箱体2内的滚筒3。需要说明的是，在箱体2内配置有用于从滚筒3内的衣物中去除水分的除湿机构(加热器和鼓风扇、热泵等)，但省略其说明。需要说明的是，图1中图示出了箱体2的衣物投入口2a的开闭盖2c和滚筒3的滚筒开闭盖3c被打开的状态。
图1所示的箱体2为大致长方体形状。在箱体2的上表面形成有供衣物出入于滚筒3的衣物投入口2a，并且装配有能对该衣物投入口2a进行开闭的开闭盖2c。在箱体2设有操作部18(参照图5)，该操作部18配置有电源按钮、暂停按钮、进行关于烘干运转的各种设定操作的按钮、进行运转开始操作的开始按钮等。
在箱体2内配置有滚筒3，该滚筒3具有用于容纳衣物的大致圆筒形状的周面。滚筒3被轴支承为能以水平轴为中心旋转。
滚筒3的背面连接有主轴5，该主轴5由未图示的轴承旋转自如地支承。在主轴5装配有主带轮5a。在箱体2的底部设置有感应马达6，在感应马达6的旋转轴装配有马达带轮6a。马达带轮6a的旋转动力经由动力传动带8传递给主带轮5a。由此，当感应马达6被驱动时，滚筒3以主轴5a为中心旋转。
在滚筒3的周面形成有供衣物出入于滚筒3的滚筒开口3a，并且装配有能对该滚筒开口3a进行开闭的滚筒开闭盖3c。如图1所示，在滚筒3的滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内的状态下，在衣物投入口2a的开闭盖2c被打开后，能打开滚筒开闭盖3c。
在滚筒3的内周面以向滚筒3内突出的方式设有三个提升筋10。提升筋10是用于在滚筒3旋转时举起容纳于滚筒3的衣物的突起。因此，在烘干过程时，当滚筒3通过马达6的驱动力而旋转时，滚筒3内的衣物被提升筋10举起而自然落下。
在滚筒3的外周面装配有第一磁铁11a和第二磁铁11b。第一磁铁11a和第二磁铁11b以在滚筒3的旋转方向上远离的方式配置。此外，在箱体2的底部 配置有能检测第一磁铁11a和第二磁铁11b的磁传感器12。因此，如图1所示，在滚筒3逆时针旋转一周时，磁传感器12在检测到第一磁铁11a后，检测到第二磁铁11b。因此，在烘干机1中，能通过第一磁铁11a、第二磁铁11b以及磁传感器12来感测滚筒3旋转时的滚筒3的旋转位置。
在本实施方式中，在滚筒3正在旋转时，如图2所示，磁传感器12在检测到第一磁铁11a时(时刻t 1)输出高(High)输出，在检测到第二磁铁11b时(时刻t 2)输出低(Low)输出。需要说明的是，从时刻t 1到接下来检测到磁铁11a的时刻t 1’为止的时间为滚筒旋转周期。在滚筒旋转周期为t a秒的情况下，滚筒转速N(rpm)通过60/t a来计算。
图3的(a)表示由磁传感器12检测到第一磁铁11a的时刻t 1的时间点的滚筒旋转位置(滚筒角度)，图3的(b)表示由磁传感器12检测到第二磁铁11b的时刻t 2的时间点的滚筒旋转位置(滚筒角度)。在图3的(a)和图3的(b)中的任一种情况下，滚筒3的滚筒开闭盖3c均配置于与箱体2的衣物投入口2a对置的范围内。即，在箱体2的衣物投入口2a位于箱体2的上表面部的烘干机1中，若为时刻t 1与时刻t 2之间(高输出的范围内)，则滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内。
在本实施方式的烘干机1中，无论在滚筒3正在旋转时停止指令在怎样的定时被发出，都以使滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内的方式控制滚筒3使滚筒3停止(以下，有时将其称为“滚筒对位”)。
具体而言，在本实施方式的烘干机1中，在滚筒3正在旋转时停止指令被发出的情况下，在使滚筒3旋转以使滚筒开闭盖3c配置于比箱体2的衣物投入口2a附近稍靠跟前处后进行滚筒3的间歇运转(感应马达6的间歇运转)，由此控制滚筒3的旋转以使滚筒开闭盖3c在与箱体2的衣物投入口2a对置的范围内停止。
需要说明的是，使滚筒3旋转以使滚筒开闭盖3c配置于比箱体2的衣物投入口2a附近稍靠跟前处是指使滚筒3旋转以使滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围附近。例如，优选的是使滚筒3旋转以使滚筒开闭盖3c的旋转方向下游侧的端部配置于与箱体2的衣物投入口2a对置的范围的旋转方向上游侧的端部附近，而通过至少在图1中使滚筒3旋转以使滚筒开闭盖 3c配置于比主轴5靠右侧的区域后进行滚筒3的间歇运转，能结束滚筒对位，使滚筒3迅速停止。
在本实施方式中，停止指令是指例如包括：自动提供以便在烘干过程开始后经过预先确定的烘干时间结束烘干过程的停止指令、在暂停按钮被用户操作时提供的停止指令、在电源按钮被用户操作而电源断开时提供的停止指令等。
需要说明的是，在本实施方式中，图3的(a)所示，由磁传感器12检测到第一磁铁11a时的滚筒3的旋转位置在进行滚筒对位时用作滚筒3的规定旋转位置。
(感应马达6的转速)
感应马达6的转速由电源频率决定，因此例如在施加给感应马达6的负荷(转矩)为零时即同步旋转时的滚筒转速N 0如下。
N 0＝2·R·f/p
其中，R为滚筒3与感应马达6的带轮传动比，f为电源频率(在日本的情况下为50Hz或60Hz)，p为马达的极数。
实际上，由于感应马达6被施加负荷，因此会产生转矩(旋转力)。感应马达6的转速与负荷(转矩)的关系如图4所示。由图4可知，转矩越高即负荷大，则转速越慢。反过来说，能够通过测定转速来推定负荷的量。需要说明的是，同步转速与转矩的关系不是线性的，在实际使用中，若过度提高转矩，则转速会急剧下降，因此在接近同步转速的范围内使用该关系。因此，转速与转矩的关系能假定为大致线性。需要说明的是，烘干机1中的滚筒3的转速通常为50～60rpm左右。
图5是表示本实施方式的烘干机1的电气结构的框图。烘干机1的动作由包括微型计算机的控制部30来控制。控制部30具备负责整个系统的控制的中央控制部(CPU)，在该控制部30连接有存储器。此外，通过控制部30来使微型计算机执行存储于存储器的程序，由此进行预定的运转工作，并且存储器中临时存储有执行上述程序时所使用的数据等。
存储器中分别存储有以下详细说明的值，即负荷为零时的转速N L、最大额定负荷(R)时的转速N H、负荷为零时的规定时间T 1即T 1L、最大额定负荷(R) 时的规定时间T 1即T 1H、负荷为零时的规定时间T 2即T 2L、最大额定负荷(R)时的规定时间T 2即T 2H等。操作部18、感应马达6以及磁传感器12与控制部30连接。
基于图6对本实施方式的烘干机1中进行的滚筒对位的流程进行说明。
＜步骤S1＞
在步骤S1中，控制部30基于对操作部18进行的操作内容，检测到烘干机1的电源成为接通状态。
＜步骤S2＞
在步骤S2中，控制部30感测连接有烘干机1的电源的电源频率。电源频率能使用例如图7所示的电路来感测。在图7中，R1是用于使光电耦合器中不流过过电流的电流限制用电阻，R2是用于使光电耦合器接通时5V和GND(Ground：电线接地端)中不流过短路电流的电流限制用电阻。光电耦合器与交流电源对应地接通/断开，由此能得到与电源频率对应的矩形波输出。
＜步骤S3＞
在步骤S3中，控制部30基于对操作部18进行的操作内容，感测到烘干机1开始烘干运转。如此，控制部30使滚筒3旋转来进行烘干运转。
＜步骤S4＞
在步骤S4中，控制部30基于对操作部18进行的操作内容，感测到烘干机1的停止指令被发出。
＜步骤S5＞
在步骤S5中，控制部30存储烘干机1的运转停止指令被发出时的滚筒3的转速(感应马达6的转速)。
＜步骤S6＞
在步骤S6中，控制部30基于步骤S2中感测到的电源频率f与在步骤S5中存储的烘干机1的停止指令被发出时的滚筒3的转速N，计算出规定时间T 1。
(规定时间T 1)
在本实施方式的烘干机1中，如图8的(a)所示，在停止指令被发出时，不立即停止感应马达6而等待至磁传感器12感测第一磁铁11a，在感测到第一磁铁11a后，如图8的(b)所示，在经过了规定时间T 1后使感应马达6停止。即使在滚筒3正在旋转时停止感应马达6，之后滚筒3也会因惯性旋转而继续旋转，如图8的(c)所示，在时间T 2’后停止。因此，规定时间T 1被调整为使得：在使感应马达6停止后，滚筒3因惯性旋转而继续旋转，滚筒开闭盖3c在比箱体2的衣物投入口2a附近稍靠跟前处停止。
如上所述，在感测到第一磁铁11a后经过了规定时间T 1时使感应马达6停止，但若在如图8的(b)所示滚筒3内的提升筋10举起衣物的定时使感应马达6停止，则能够在更短的时间内使滚筒3停止。因此，优选的是，以在滚筒3内的提升筋10举起衣物的定时使感应马达6停止的方式配置第一磁铁11a和磁传感器12。
以下，对规定时间T 1的计算方法进行说明。
若负荷小则滚筒3惯性旋转的时间T 2’长，若负荷大则滚筒3惯性旋转的时间T 2’短，因此相反地，若负荷小则需要将规定时间T 1设短，若负荷大则需要将规定时间T 1设长。
如上所述，如图9的(a)所示，滚筒3的转速(感应马达6的转速)与负荷量具有大致线性的关系。即，当将负荷为零(无负荷)时的转速设为N L并将最大额定负荷(R)时的转速设为N H时，负荷r与转速N的关系如下。需要说明的是，即使负荷为零，实际上也需要仅使滚筒3旋转的转矩，因此N L与上述的同步转速N 0不是相等的值。
N＝N L－{(N L－N H)×r/R}
同样地，规定时间T 1与负荷量的关系如图9的(b)所示，当将无负荷的情况的规定时间T 1设为T 1L并将额定负荷(R)时的规定时间T 1设为T 1H时，负荷量r与规定时间T 1的关系如下。
T 1＝T 1L+{(T 1H－T 1L)×r/R}
当从上述两式中消去r/R时，该式如下。
T 1＝T 1L+{(T 1H－T 1L)×(N L－N)/(N L－N H)}
即，若预先测定负荷为零时的转速N L、最大额定负荷(R)时的转速N H、负荷为零时的规定时间T 1即T 1L以及最大额定负荷(R)时的规定时间T 1即T 1H，则能根据停止指令被发出的时间点的滚筒转速N来计算出规定时间T 1。需要说明的是，如上所述，该计算值因电源频率而不同，因此在如日本那样相同的发送地之中频率根据地域而不同的情况下，需要按频率预先测定T 1L、T 1H等，使用与电源频率对应的值。
＜步骤S7＞
在步骤S7中，控制部30基于磁传感器12的输出来反复判定是否检测到了第一磁铁11a。当由控制部30判定为检测到了第一磁铁11a时，进入步骤S8。
＜步骤S8＞
在步骤S8中，控制部30反复判定是否经过了步骤S6中计算出的规定时间T 1。当由控制部30判定为经过了规定时间T 1时，进入步骤S9。
＜步骤S9＞
在步骤S9中，控制部30停止感应马达6。
＜步骤S10＞
在步骤S10中，控制部30基于步骤S2中感测到的电源频率f与烘干机1的停止指令被发出时的滚筒3的转速N，计算出规定时间T 2。
(规定时间T 2)
在本实施方式的烘干机1中，在调整为使滚筒开闭盖3c在比箱体2的衣物投入口2a附近稍靠跟前处停止后，使滚筒3间歇地旋转，进行滚筒3的对位，但在使感应马达6停止后经过了规定时间T 2时，视为滚筒3已停止并开始滚筒4的间歇运转。
以下，对规定时间T 2的计算方法进行说明。
在使感应马达6停止后，等待至经过滚筒3应该已停止的规定时间T 2。该规定时间T 2越短越能缩短直至打开滚筒开闭盖3c为止的时间，因此优选，但需要设为比直至滚筒3实际停止为止的时间T 2’长。如上所述，如图10所示，时间T 2’取决于负荷量，如下。
T 2’＝T 2’ L－{(T 2’ L－T 2’ H)×r/R}
因此，时间T 2’与规定时间T 1同样地，若预先测定负荷为零时的转速N L、最大额定负荷(R)时的转速N H、负荷为零时的时间T 2’即T 2’ L以及最大额定负荷(R)时的时间T 2’即T 2’ H，则能根据停止指令被发出的时间点的滚筒转速N来计算出时间T 2’。
T 2’＝T 2’ L－{(T 2’ L－T 2’ H)×(N L－N)/(N L－N H)}
规定时间T 2只要比时间T 2’长即可，因此只要通过对T 2’加上恒定时间Tc或者对T 2’乘以恒定比率Rt(1以上)中的任一种方法设定为比T 2’长的时间即可。
T 2＝T 2’+Tc
T 2＝T 2’×Rt
即，若预先设定负荷为零时的规定时间T 2即T 2L和最大额定负荷(R)时的规定时间T 2即T 2H，则能根据停止指令被发出的时间点的滚筒转速N来计算出规定时间T 2。
T 2＝T 2L－{(T 2L－T 2H)×(N L－N)/(N L－N H)}
＜步骤S11＞
在步骤S11中，控制部30反复判定是否经过了步骤S10中计算出的规定时间T 2。当由控制部30判定为经过了规定时间T 2时，进入步骤S12。
＜步骤S12＞
在步骤S12中，控制部30基于步骤S2中感测到的电源频率f与在步骤S5中存储的烘干机1的运转停止指令被发出时的滚筒3的转速N，计算出规定时间T ON。规定时间T ON是在间歇运转滚筒3时对滚筒3进行旋转驱动的时间。
＜步骤S13＞
在步骤S13中，控制部30基于步骤S2中感测到的电源频率f与步骤S5中存储的烘干机1的运转停止指令被发出时的滚筒3的转速N，计算出规定时间T OFF。规定时间T OFF是在间歇运转滚筒3时不对滚筒3进行旋转驱动的时间。
＜步骤S14＞
在步骤S14中，控制部30基于规定时间T ON和规定时间T OFF来进行滚筒3的间歇运转。
(滚筒3的间歇运转、规定时间T ON、规定时间T OFF)
在本实施方式的烘干机1中，在烘干机1的停止指令被发出后经过规定时间T 2而滚筒3应该已停止后，如图11的(a)和图11的(b)所示，感应马达6反复进行使规定时间T ON的工作状态和规定时间T OFF的不工作状态交替反复的控制，使滚筒3缓慢旋转。即，在步骤11中经过规定时间T 2而使滚筒3旋转至滚筒开闭盖3c比箱体2的衣物投入口2a附近稍靠跟前处后，一边使滚筒3间歇地旋转，一边进行滚筒对位以使滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内。
使滚筒3间歇地旋转时的规定时间T ON很大程度上取决于负荷。即，若在负荷大时规定时间T ON过短，则滚筒3不旋转，相反，若在负荷小时规定时间T OFF过长，则滚筒3会因惯性而过度旋转，滚筒开闭盖3c不会在箱体2的衣物投入口2a附近停止。
此外，规定时间T OFF越短，滚筒对位的时间越短即可，但特别是在负荷小时，若规定时间T OFF过短，则在旋转了规定时间T ON的滚筒3停止前，感应马达6再次旋转，旋转会继续加速，滚筒开闭盖3c当然不会在箱体2的衣物投入口2a附近停止。即，规定时间T ON和规定时间T OFF处于如图12的(a)和图12的(b)所示的相反的关系。
通过算式来表示规定时间T ON和规定时间T OFF，如下。
T ON＝T ONL+{(T ONH－T ONL)×r/R}
T OFF＝T OFFL－{(T OFFL－T ONH)×r/R}
由此，与T 1、T 2’同样，当消去r/R时，能得到如下根据转速N计算出的式子。
T ON＝T ONL+{(T ONH－T ONL)×(N L－N)/(N L－N H)}
T OFF＝T OFFL－{(T OFFL－T ONH)
＜步骤S15＞
在步骤S15中，控制部30基于来自磁传感器12的输出，反复判定是否检测到了第一磁铁11a。当由控制部30判定为检测到了第一磁铁11a时，进入步骤S16。
＜步骤S16＞
在步骤S16中，控制部30停止基于规定时间T ON和规定时间T OFF的滚筒3的间歇运转。
＜步骤S17＞
在步骤S17中，控制部30基于步骤S2中感测到的电源频率f与步骤S5中存储的烘干机1的运转停止指令被发出时的滚筒3的转速N，计算出规定时间T 3。
(规定时间T 3)
在本实施方式的烘干机1中，在进行滚筒3的间歇运转时，如图13的(a)所示，当由磁传感器12检测到第一磁铁11a时，结束滚筒3的间歇运转。在结束间歇运转后滚筒3也会进行惯性旋转，因此在结束间歇运转后，等待至经过规定时间T 3而滚筒3应该已停止时为止，若如图13的(b)所示从由磁传感器12检测到第一磁铁11a的位置偏离角度θt并从由磁传感器12检测到第一磁铁11a的位置偏离规定角度θ以上，则结束滚筒对位。在结束间歇运转后，等待至经过规定时间T 3而滚筒3应该已停止时为止，若如图13的(c)所示从由磁传感器12检测到第一磁铁11a的位置偏离规定角度θ并从由磁传感器12检测到第一磁铁11a的位置偏离规定角度θ以上，则重新进行滚筒3的间歇运转。
以下，对规定时间T 3的计算方法进行说明。
作为规定时间T 3的计算方法，首先考虑以使间歇运转后的惯性旋转角度大致相同的方式调节上述的滚筒3的间歇运转的规定时间T ON和规定时间T OFF。在能够进行该调解的情况下，规定时间T 3可以使用无论负荷量如何都恒定的值。在本实施方式中，将规定时间T 3设为无论负荷量如何都恒定的值。
＜步骤S18＞
在步骤S18中，控制部30反复判定结束滚筒3的间歇运转后是否经过了规定时间T 3。当由控制部30判定为经过了规定时间T 3时，进入步骤S19。
＜步骤S19＞
在步骤S19中，控制部30基于来自磁传感器12的输出，反复判定是否检测到了第二磁铁11b。当由控制部30判定为检测到了第二磁铁11b时，进入步骤S14。此外，当由控制部30判定为未检测到第二磁铁11b时，进入步骤S20。
＜步骤S20＞
在步骤S20中，控制部30结束滚筒对位。即，在该状态下，滚筒3的滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内。
本实施方式的烘干机1具备：箱体2，具有供衣物出入的衣物投入口2a；大致圆筒形状的滚筒3，旋转自如地配置于箱体2内，装配有能对供衣物出入的滚筒开口3a进行开闭的滚筒开闭盖3c；感应马达6，用于对滚筒3进行旋转驱动；以及控制部30，在滚筒3正在旋转时停止指令被发给了感应马达6的情况下，控制感应马达6来进行滚筒对位以使滚筒3的滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内。
当采用这样的结构时，能在不是由非常昂贵的变频马达来驱动滚筒的烘干机而是由比较廉价的感应马达6来驱动滚筒3的烘干机1中以使滚筒3的滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内的方式进行滚筒对位。因此，无论在滚筒3正在旋转时停止指令在怎样的定时被发出，在滚筒停止时滚筒开闭盖3c都在箱体2的衣物投入口2a附近停止，能容易地进行衣物相对于滚筒3的出入。
在本实施方式的烘干机1中，在滚筒3正在旋转时停止指令被发给了感应马达6的情况下，控制部30在使滚筒3旋转以使滚筒3的滚筒开闭盖3c在比箱体的衣物投入口稍靠跟前处停止后，一边使滚筒3间歇地旋转一边进行滚筒对位。
当采用这样的结构时，在滚筒3正在旋转时停止指令被发出的情况下，在滚筒开闭盖3c使滚筒3旋转至比箱体2的衣物投入口2a附近稍靠跟前处后，一边使滚筒3间歇地旋转，一边进行滚筒对位，因此能以使滚筒3的滚筒开闭盖 3c配置于与箱体2的衣物投入口2a对置的范围内的方式使滚筒3迅速停止。
在本实施方式的烘干机1中，具备检测装配于滚筒3的外周面的磁铁11a的滚筒位置检测单元即第一磁铁11a、第二磁铁11b以及磁传感器12，在滚筒3正在旋转时停止指令被发出的情况下，控制部30在由磁传感器12检测到装配于滚筒3的外周面的磁铁11a后，等待至经过规定时间T 1，使感应马达6停止，在从使感应马达6停止时起经过了规定时间T 2后，使感应马达6间歇运转而使滚筒3间歇地旋转，在由磁传感器12检测到装配于滚筒3的外周面的磁铁11a的时间点结束间歇运转，之后等待至经过规定时间T 3，若未由磁传感器12检测到装配于滚筒3的外周面的磁铁11b，则结束滚筒对位。
当采用这样的结构时，通过适当地设定在进行滚筒对位时所使用的规定时间T 1等值，能可靠地以使滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内的方式停止滚筒3。
在本实施方式的烘干机1中，从使感应马达6停止时起等待至经过规定时间T 3，若由磁传感器12检测到装配于滚筒3的外周面的磁铁11b，则重新进行感应马达6的间歇运转。
当采用这样的结构时，在使滚筒3间歇地旋转而进行了滚筒对位的情况下，即使在滚筒开闭盖3c超过了与箱体2的衣物投入口2a对置的范围内的情况下，也能通过从感应马达6的间歇运转起重新进行来以使滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内的方式停止滚筒3。
在本实施方式的烘干机1中，基于停止指令被发出时的感应马达6的旋转负荷来切换规定时间T 1、规定时间T 2、间歇运转时的工作时间T ON和不工作时间T OFF以及规定时间T 3。
当采用这样的结构时，基于停止指令被发出时的滚筒3的旋转负荷来切换在进行滚筒对位时使用的规定时间T 1等值，因此，例如无论滚筒3内的衣物的量如何，都能可靠地以使滚筒开闭盖3c配置于与箱体2的衣物投入口2a对置的范围内的方式停止滚筒。
在本实施方式的烘干机1中，在滚筒3的内周面形成有提升筋10，在滚筒3正在旋转时停止指令被发出的情况下，在由磁传感器12检测到装配于滚筒3 的外周面的磁铁11a后等待至经过规定时间T 1而使感应马达6停止的定时是在滚筒3旋转时提升筋10将要举起滚筒3内的衣物的定时。
当采用这样的结构时，通过在提升筋10将要举起滚筒3内的衣物的定时使感应马达6停止，能在停止指令被发出后使滚筒3迅速停止。
以上，对本发明的实施方式进行了说明，但本实施方式的结构并不限定于上述的方式，可以进行各种变形。
例如，在上述实施方式中，将规定时间T 3设为无论负荷量如何都恒定的值，但并不限于此。例如，也可以与规定时间T 1和规定时间T 2同样根据负荷量来计算规定时间T 3。其中，根据转速N计算出规定时间T 3时的公式如下。
T 3＝T 3L+{(T 3L－T 3H)×(N L－N)/(N L－N H)}
在上述实施方式中，对按照规定时间T 1、规定时间T 2、规定时间T ON以及规定时间T OFF与负荷量成比例的形式进行计算的方法进行了说明，但并不限于此。在这些值与负荷量不成比例的情况下，若将负荷量分为几个等级并按等级确定最佳值，则能够进行更准确的控制。即，也可以针对彼此不同的负荷量的范围按每个范围设定最佳值。需要说明的是，上述变形例的规定时间T 3也同样如此。
在上述实施方式中，对基于滚筒3的转速来推定负荷量的方法进行了说明，但并不限于此。例如，也可以是，在滚筒3的主轴5设置重量传感器，基于由该重量传感器检测到的衣物的重量来直接测定负荷量。此外，如图14所示，烘干过程中滚筒3内的温度根据负荷量如下进行变化。因此，也可以是，设置测定滚筒3内的温度的温度传感器，基于由该温度传感器检测到的滚筒3内的温度来推定负荷量。
在上述实施方式中，作为检测滚筒3的旋转位置的滚筒位置检测单元，具有第一磁铁11a、第二磁铁11b以及磁传感器12，但滚筒位置检测单元的结构是任意的。滚筒位置检测单元也可以是例如拍摄滚筒3的照相机。
在上述实施方式中，在滚筒3正在旋转时停止指令被发给了感应马达6的情况下，在提升筋10将要举起滚筒3内的衣物的定时使感应马达6停止，但不限于此。也可以是，感应马达6未必在提升筋10将要举起滚筒3内的衣物的定 时停止。
在上述实施方式中，对在滚筒3的内周面设有三个提升筋10的情况进行了说明，但提升筋10的数量是任意的。例如，既可以在滚筒3的内周面不设置提升筋10，也可以在烘干机1的滚筒3的内周面仅设置一个提升筋10。
在上述实施方式中，对循环式烘干机1进行了说明，但并不限于此。本发明能适用于如下的烘干机：例如在滚筒3的周面形成有许多通气孔，在烘干过程时，来自供气管道的空气被供给至滚筒3内，并且滚筒3内的空气经由排气管道向箱体2的外部排出。
其他的结构也可以在不脱离本发明的主旨的范围内进行各种变形。

Claims (6)

  1. 一种烘干机，其特征在于，具备：
    箱体，具有供衣物出入的衣物投入口；
    大致圆筒形状的滚筒，旋转自如地配置于所述箱体内，在其周面装配有能够对供衣物出入的滚筒开口进行开闭的滚筒开闭盖；
    感应马达，用于对所述滚筒进行旋转驱动；以及
    控制单元，在所述滚筒正在旋转时停止指令被发给了所述感应马达的情况下，控制所述感应马达来进行滚筒对位以使所述滚筒的所述滚筒开闭盖配置于与所述箱体的所述衣物投入口对置的范围内。
  2. 根据权利要求1所述的烘干机，其特征在于，
    在所述滚筒正在旋转时停止指令被发给了所述感应马达的情况下，所述控制单元在使所述滚筒旋转以使所述滚筒的所述滚筒开闭盖在比所述箱体的所述衣物投入口稍靠跟前处停止后，一边使所述滚筒间歇地旋转一边进行滚筒对位。
  3. 根据权利要求2所述的烘干机，其特征在于，
    具备：滚筒位置检测单元，检测所述滚筒位于规定旋转位置的情况，
    在所述滚筒正在旋转时所述停止指令被发出的情况下，所述控制单元在由所述滚筒位置检测单元检测到所述滚筒位于规定旋转位置后，等待至经过规定时间T 1，使所述感应马达停止，在从使所述感应马达停止时起经过了规定时间T 2后，使所述感应马达间歇运转而使所述滚筒间歇地旋转，在由所述滚筒位置检测单元检测到所述滚筒位于规定旋转位置的时间点结束所述间歇运转，之后等待至经过规定时间T 3，若未从所述滚筒的规定旋转位置偏离规定角度θ以上，则结束滚筒对位。
  4. 根据权利要求3所述的烘干机，其特征在于，
    所述控制单元从使所述感应马达停止时起等待至经过规定时间T 3，若从所述滚筒的规定旋转位置偏离了规定角度θ以上，则重新进行所述感应马达的间歇运转。
  5. 根据权利要求3或4所述的烘干机，其特征在于，
    基于所述停止指令被发出时的所述感应马达的旋转负荷来切换所述规定时间T 1、所述规定时间T 2、所述间歇运转时的工作时间T ON和不工作时间T OFF以及所述规定时间T 3。
  6. 根据权利要求3～5中任一项所述的烘干机，其特征在于，
    在所述滚筒的内周面形成有提升筋，
    在所述滚筒正在旋转时所述停止指令被发出的情况下，在由所述滚筒位置传感器检测到所述滚筒位于规定旋转位置后等待至经过规定时间T 1而使所述感应马达停止的定时是在所述滚筒旋转时所述提升筋将要举起所述滚筒内的衣物的定时。
PCT/CN2021/108561 2020-12-22 2021-07-27 烘干机 WO2022134569A1 (zh)

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