JP2005143790A - Washing/drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing/drying machine having a filter for collecting dust, lint, etc. in which the deposition of the lint on an air sending path, an air fan, etc. and breakage of the filter, etc. are prevented even when the filter is removed during operation. <P>SOLUTION: In the washing/drying machine, a rotary drum is disposed inside a water receiving tub elastically supported by a washing and drying machine main body, circulation air is given into the water receiving tub by an air sending means, the lint, etc. included in the circulation air is collected by the filter and the presence/absence of the filter is judged by a presence/absence judging means, and the rotary drum is driven by a motor. In such a washing and drying machine, the deposition of the lint on the air sending path, the air fan, etc, and breakage of the filter, etc. can be prevented by making a control means interrupt an operation sequence in the case of judging that the filter is removed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a washing / drying machine having a filter for collecting dust, lint, and the like in a ventilation path.

Conventionally, this type of washing / drying machine prevents lint such as lint generated by drying of the laundry from accumulating on the blowing path, the blowing fan, and the like when the laundry is dried. A filter that collects lint is provided in the ventilation path, and the lint collected on the filter is removed and cleaned as needed so that the ventilation effect is not reduced. Moreover, in order to make this filter easy to remove by cleaning, it is detachably mounted (see, for example, Patent Document 1).
JP 2002-159791 A

  However, in the conventional washer-dryer, when the user started the operation after attaching the filter, the operation was continued even if the filter was removed during the operation. When the operation is continued with the filter detached as described above, the lint cannot be collected by the filter, and there is a problem that the lint accumulates on the blower path or the blower fan.

  In addition, there is a problem that the removed filter hits the rotating part and generates abnormal noise or the filter is damaged.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and aims to prevent lint accumulation on a blower path, a blower fan, and the like, filter breakage, and the like even when a filter is detached during operation.

  In order to solve the above-mentioned conventional problems, the washing / drying machine of the present invention has a central axis of rotation in a horizontal direction or an inclination direction in a water receiving tank elastically supported by the washing / drying machine body and having an opening on the front surface or the upper surface. The rotating drum is enclosed, the opening of the water receiving tank is covered with a lid, the circulating air is blown into the water receiving tank by the blowing means, and dust and lint contained in the circulating air are collected by the filter and the filter The presence / absence of the filter is determined by the filter presence / absence determining means, and the rotating drum is driven by a motor. The control means interrupts the operation sequence when it is determined by the filter presence / absence determining means that the filter has run out. is there.

  Thus, when the filter is removed during operation, the operation sequence is interrupted to stop the blower fan and stop the circulating air. Also, the motor is stopped to stop the rotating drum.

  The washing and drying machine of the present invention can prevent lint such as dust and lint from accumulating on the air blowing path and the air blowing fan by stopping the circulating air even when the filter is removed during operation. Further, by stopping the rotating drum, it is possible to prevent the filter removed during operation from hitting the rotating part and generating abnormal noise, or the filter from being damaged.

  1st invention accommodates the laundry and has a rotating drum which has a rotation center axis in a horizontal direction or an inclination direction, and includes the said rotating drum, has an opening part in the front surface or an upper surface, and is elastically supported by the washing machine main body. A water receiving tank, a lid that covers the opening of the water receiving tank, a blowing means that blows circulating air into the water receiving tank, and a removable unit that collects dust, lint, etc. that are being blown by the blowing means A filter, a filter presence / absence determination unit that determines presence / absence of the filter, a motor that drives the rotating drum, and a control unit that controls a series of washing and drying operations, the control unit including the filter presence / absence determination unit When it is judged that the filter has run out, the operation is interrupted.If the filter is removed during operation and the lint cannot be collected, the circulating air is stopped. It is thereby possible to prevent the lint dust and lint to such air flow path and the blower fan is deposited. Further, by stopping the operation of the rotating drum, it is possible to prevent the removed filter from hitting the rotating part and generating an abnormal noise or damaging the filter.

  In a second aspect based on the first aspect, the filter presence / absence determination means is configured by a magnet built in the filter and a magnetic force determination means for determining the presence / absence of the magnet by magnetic force. Yes, the filter presence / absence determination means can determine the presence / absence without contact with the filter. Therefore, even if the filter is installed inside the water receiving tank and the filter presence / absence determining means is installed outside the water receiving tank, the presence / absence of the filter can be determined without having a special structure such as waterproofing. In addition, it becomes easy to waterproof the filter presence / absence determining means, and an increase in cost can be prevented.

  According to a third invention, in the first or second invention, the control means applies a brake to the motor when it is determined that the filter is lost during the operation of the motor. Even if the filter is removed, the motor can be stopped in a short time, and the time when the removed filter hits the rotating part and generates an abnormal noise can be suppressed to a shorter time. Further, it is possible to prevent the filter from being damaged to the maximum.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the apparatus includes a lid opening detection unit that detects opening and closing of the lid, and the control unit determines that the filter is lost and stops the operation. In this case, the operation is resumed when the lid opening detecting means detects the closure of the lid, and when the filter is detached and the operation is stopped, the operation is resumed as soon as the filter is attached. It can prevent and improve safety. In addition, it approaches the vicinity of where the filter is supposed to be installed and prevents it from restarting before it is properly inserted, and the rotating part hits the filter in the middle of installation or circulating air containing lint passes through the filter. It is possible to prevent the user from passing through without doing so.

  According to a fifth aspect of the present invention, in the fourth aspect, the control means treats the sequence for restarting the operation the same as the opening and closing of the lid, and the filter is removed when the drum rotates at a high speed. Even if the operation is stopped, the operation can be resumed safely without restarting the lid without opening a special operation sequence. The drum can be returned to the state of rotating at high speed.

  6th invention is equipped with the temperature measurement means which measures the temperature in the said water receiving tank in any one invention of the said 1st-5th, The control means is the input from the said temperature measurement means being high temperature When the operation for forcibly lowering the temperature in the water receiving tank is performed, the determination by the filter presence / absence determination means is ignored, and the temperature is forcibly set even when the filter is lost. The operation to lower the temperature can be continued, and the temperature in the cabinet can be lowered in a short time.

  In a seventh aspect of the present invention, in any one of the first to sixth aspects of the invention, there is provided display means for displaying that the filter has disappeared, and the control means has no filter in the display means when the filter is exhausted. When the operation is stopped because the filter has been removed during operation, the user can be informed of this, preventing it from being mistaken for a malfunction and improving usability. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
As shown in FIG. 2, the rotating drum 1 is formed in a bottomed cylindrical shape, and a large number of water passage holes 2 are provided on the entire surface of the rotating drum 1. The rotating drum 1 is rotatably disposed in the water receiving tank 3. A rotation axis (rotation center axis) 4 is provided at the rotation center of the rotary drum 1 in an inclined direction, and the axial center direction of the rotary drum 1 is inclined downward from the front side toward the back side. A motor 5 attached to the back surface of the water receiving tank 3 is connected to the rotating shaft 4 to drive the rotating drum 1 to rotate in the forward and reverse directions. Several protruding plates 6 are provided on the inner wall surface of the rotating drum 1.

  The opening provided in the upward inclined surface on the front side of the water receiving tub 3 is covered with a lid 7 so that it can be opened and closed. By opening the lid 7, the laundry can be taken in and out of the rotary drum 1 through the clothing entrance 8. . Since the lid 7 is provided on the inclined surface facing upward, when the laundry is taken in and out, it can be performed without bending the waist. By operating the lid lock means 9, the lid 7 can be locked, and even if the user wants to open it, it can be prevented from being opened.

  The water receiving tub 3 is suspended from the washing machine body 10 so as to be swingable by a spring body 11, one end of the drainage path 12 is connected to the lower part of the water receiving tub 3, and the other end of the drainage path 12 is connected to the drainage valve 13. The washing water in the water receiving tub 3 is connected and drained. The water supply valve 14 supplies water into the water receiving tank 3 through the water supply path 15. One end of the water supply line 15 is connected to the dehumidification line 18 of the water receiving tank 3.

  In the present embodiment, the rotary shaft 4 is provided in the tilt direction at the rotation center of the rotary drum 1, and the axial center direction of the rotary drum 1 is tilted downward from the front side toward the back side. However, the rotating shaft 4 may be provided in the horizontal direction at the rotation center of the rotating drum 1, and the axial center direction of the rotating drum 1 may be disposed in the horizontal direction.

  The present embodiment has a drying function for drying the laundry in the rotating drum 1, exhausts the air in the water receiving tub 3 to dehumidify it, and heats it to dry warm air to receive the water again. A circulation ventilation path for blowing air into the tank 3 is formed.

  That is, as shown in FIG. 3, by rotationally driving a blower fan (blower unit) 16 disposed in the circulation blower path, an air flow is generated in the circulation blower path, and the air in the rotary drum 1 passes through. The water is exhausted from the exhaust port 17 of the water receiving tank 3 to the dehumidifying conduit 18 through the water hole 2. The dehumidification pipe line 18 is cooled by spraying water supplied from the water supply path 15, cools the air containing water discarded from the water receiving tank 3, and dehydrates the water by dew condensation.

  The air duct 19 connected to the dehumidifying duct 18 forms a duct that guides air to the back side of the water receiving tank 3 through a filter 20 disposed in the vicinity of the clothing entrance 8. It is connected to the heating pipe line 21 arranged on the side. As shown in FIG. 4, the heating pipe 21 forms a flow path in an arc shape above the motor 5 attached to the back surface of the water receiving tank 3, and air is blown to the connection position with the blow pipe 19 inside thereof. A fan 16 is disposed, a blower opening 22 leading to the water receiving tank 3 is formed at the other end, and a heater 23 is disposed at an arc-shaped bent portion.

  The air passing through the heating pipe 21 is heated to a predetermined temperature by the heater 23, blown into the water receiving tank 3 from the blower opening 22 as dry hot air, and supplied into the rotating drum 1 through the water passage hole 2. Therefore, the laundry agitated by the rotation of the rotating drum 1 is dehydrated by the dry warm air and the drying proceeds. The laundry is dried by repeating this air circulation for a required time.

  As shown in FIG. 4, the filter 20 is provided with a filter insertion portion 24 at the periphery of the clothing entrance 8 formed in the water receiving tub 3 so that the filter 20 can be attached and detached in an upwardly inclined direction from within the opening of the clothing entrance 8. Is arranged. The part which becomes the handle 20a for attaching / detaching the filter 20 is located so that it may become a part of peripheral part of the clothing entrance / exit 8. As shown in FIG. The handle 20a portion is formed in an arc shape by cutting off a part of the clothing entrance 8 that opens in a circular shape, and the filter 20 is connected to the dehumidifying conduit 18 and connected to the heating conduit 21 in the air passage of the air duct 19. It is attached to the part where it is located.

  As shown in FIG. 5, a magnet 25 is attached to the filter 20, and by inserting the filter 20 into the filter insertion portion 24, magnetic force determination means (filters attached to the outside of the filter insertion portion 24) Presence / absence determination means) 26 can be located in the vicinity. The magnetic force determination means 26 can determine whether the filter 20 is attached by the magnetic force of the magnet 25.

  The control device 27 is configured as shown in FIG. 1, and controls the operation of the motor 5, the drain valve 13, the water supply valve 14, the blower fan 16, the heater 23, the lid lock means 9, etc., and washing, rinsing, dehydrating, Control means 28 comprising a microcomputer for sequentially controlling a series of drying steps is provided. The control means 28 inputs information from the input setting means 29 for setting the driving course, etc., and displays the information on the display means 30 based on the information to inform the user, and the input setting means 29 starts operation. Is set, the water level detecting means 31 for detecting the water level in the water receiving tank 3, the lid opening detecting means 32 for detecting the opening and closing of the lid, and the magnetic force for determining the attachment of the filter based on the presence or absence of the magnet 25 attached to the filter. Data from the judging means 26 and the like are input and the operations of the drain valve 13, the water supply valve 14, the blower fan 16, the heater 23, the lid lock means 9 and the like are controlled via the load driving means 33, and washing / drying operations are performed. . The thermistor (temperature measuring means) 34 is configured to measure the temperature in the water receiving tank 3 and determine whether or not the temperature is high.

  During the washing / drying operation, the control unit 28 controls the rotation of the motor 5 by controlling the inverter 37 via the drive circuit 36 based on the information from the position detection unit 35 that detects the position of the rotor of the motor 5. I am doing so. Although the motor 5 is a direct current brushless motor, although not shown, it is composed of a stator having a three-phase winding and a rotor having a two-pole permanent magnet disposed on the ring, and the stator has a three-phase winding. The first winding 5a, the second winding 5b, and the third winding 5c to be configured are wound around an iron core provided with a slot.

  The inverter 37 is constituted by a switching element composed of a parallel circuit of a power transistor (IGBT) and a reverse conducting diode. A series circuit of a first switching element 37a and a second switching element 37b, a series circuit of a third switching element 37c and a fourth switching element 37d, and a fifth switching element 37e and a sixth switching element 37f A series circuit is configured, and the series circuit of each switching element is connected in parallel.

  Here, both ends of the series circuit of the switching elements are input terminals, connected to a DC power source, and output terminals are respectively connected to connection points of two switching elements constituting the series circuit of the switching elements. The output terminal is connected to the U terminal, V terminal, and W terminal of the three-phase winding, and the U terminal, V terminal, and W terminal are connected by the on / off combination of two switching elements constituting the series circuit of the switching element. The three states are positive voltage, zero voltage, and release, respectively.

  The on / off of the switching element is controlled by the control means 28 based on information from the three position detection means 35a, 35b, 35c made of the Hall IC. The position detection means 35a, 35b, and 35c are disposed on the stator so as to face the permanent magnets of the rotor at an electrical angle of 120 degrees.

  During one rotation of the rotor, the three position detection means 35a, 35b, and 35c each output a pulse at an electrical angle of 120 degrees. The control means 28 detects when the signal state of any of the three position detection means 35a, 35b, 35c changes, and based on the signals of the position detection means 35a, 35b, 35c, the switching elements 37a-37f. By changing the on / off state, the U terminal, the V terminal, and the W terminal are brought into three states of positive voltage, zero voltage, and release, and the first winding 5a, the second winding 5b, and the third winding of the stator. The coil 5c is energized to create a magnetic field and rotate the rotor.

  The switching elements 37a, 37c, and 37e are each controlled by pulse width modulation (PWM). For example, the rotational speed of the rotor is controlled by controlling the energization ratio between high and low at a repetition frequency of 10 kHz. The control means 28 detects the cycle each time the signal state of any of the three position detection means 35a, 35b, 35c changes, calculates the rotational speed of the rotor from that period, and sets it to the set rotational speed. The switching elements 37a, 37c, and 37e are PWM-controlled.

  The commercial power source 38 is connected to the inverter 37 via a DC power source conversion device including a diode bridge 39, a choke coil 40, and a smoothing capacitor 41. However, this is an example, and the configuration of the DC brushless motor 5, the configuration of the inverter 37, and the like are not limited thereto.

  As shown in FIG. 6, the input setting means 29 includes a washing time setting switch 29a for setting the washing time, a rinsing frequency setting switch 29b for setting the rinsing frequency, a dehydration time setting switch 29c for setting the dehydration time, and a drying time. A drying time setting switch 29d, a course setting switch 29e, a start / pause switch 29f, a power-on switch 29g, a power-off switch 29h, and the like. The display means 30 includes a washing time display section 30a, a rinse count display section 30b, It has a dehydration time display unit 30c, a drying time display unit 30d, a course setting display unit 30e, a number display unit 30f for displaying remaining time and abnormal contents, and the like.

  Here, the control means 28 detects the removal of the filter at any time during the intermittent dehydration process or the dehydration process, and when the filter is removed, the brake is applied to stop the rotation of the motor and prompt the installation of the filter. ing. When the filter is attached again, the operation returns to the beginning of the intermittent dehydration process in the same manner as when the lid is opened, and the operation is performed again.

  The operation of the above configuration will be described with reference to FIGS. First, when performing the dehydration process, the control means 28 operates the lid lock means 9 in step 42 so that the lid 7 is not opened. This is to prevent a dangerous state because if the user suddenly opens the lid 7 during high-speed rotation, it takes time to stop the motor 5 even though the motor 5 is braked.

  Next, an intermittent dehydration process is started, and in step 43, the motor 5 is driven to gradually increase the rotational speed of the rotary drum 1. This process is performed in order to prevent clothing from becoming unbalanced in the rotating drum 1 and increasing vibration when the number of rotations is increased at once. Although details are omitted, it is detected whether or not the vibration becomes unbalanced before the vibration becomes large due to unbalance. In addition, when the number of rotations is increased at a stretch in a state where moisture is contained in the clothing, water generated from the clothing is not sufficiently drained, and the rotation of the rotating drum 1 may be prevented in the water receiving tank 3, Do it to prevent it too. The change in the number of revolutions is controlled as shown in FIG. 8 and is made unbalanced by adjusting the degree to increase the number of revolutions and providing a time for maintaining the number of revolutions at 90 r / min or 150 r / min. It is prepared to be able to rotate at high speed without any problems.

  Even during such control, the filter removal is detected at step 44. This is detecting that the filter 20 provided with the magnet 25 is attached to the filter insertion part 24 by detecting that the magnet 25 exists near the magnetic force determination means 26. If the magnetic force determining means 26 determines that the magnet 25 is present nearby, that is, if it is determined that the filter 20 is attached to the filter insertion portion 24, the process proceeds to step 45.

  In step 45, it is determined whether or not the lid 7 is open based on the determination result of the lid opening detection means 32. If the lid is closed, the process proceeds to step 46 to determine whether the target rotational speed has been reached. That is, it is determined whether the intermittent dehydration process may be terminated. If the target rotational speed has not yet been reached, the process returns to step 43, and the rotational speed is gradually increased again.

  If the target rotational speed has been reached in step 46 (for example, 900 r / min), that is, if the point A in FIG. 8 has been reached, the process proceeds to step 47 and the process proceeds to the dehydration process. Here, in order to manage the time of the dehydration process, measurement of the dehydration time is started.

  Next, at step 48, the motor 5 is controlled so as to maintain the target rotational speed. Thereafter, in step 49 and step 50, the filter removal and the lid opening are detected. These operations are the same as those in step 44 and step 45. If it is determined that neither the filter is removed nor the lid is opened, it is determined in step 51 whether a dehydration time (for example, 12 minutes) has elapsed. If not, the process returns to step 48 and the dehydration process is continued.

  If the dehydration time has elapsed, the dehydration process is terminated and the process proceeds to the next process.

  If it is determined in step 44 or step 49 that the filter has been removed, there is a possibility that the filter 20 is rolling in the rotary drum 1. In the case of step 49, the filter 20 falls during the rotation at a high speed of 900 r / min. In order to prevent these, in step 52, a display indicating that the filter has been removed is displayed on the numeric display unit 30f. For example, it is possible to notify the user that the filter has been removed by displaying U16.

  Next, at step 53, the motor 5 is braked. This is not only to interrupt the operation but also to prevent the filter 20 from being damaged to the maximum by urgently stopping the motor 5. This is because the rotating drum 1 connected to the motor 5 does not readily stop when the operation is interrupted, and continues to rotate for 2 minutes or longer.

  Thereafter, in step 54, the lid lock means 9 is stopped and the lock is released in order to prompt the attachment of the filter 20. With these operations, the user can open the lid 7 and attach the filter 20 to the filter insertion portion 24 in accordance with the display of U16 displayed on the number display portion 30f.

  Thereafter, in step 55, the process waits for the lid 7 to be closed, returns to step 42, and repeats from the intermittent dehydration process. This is because the rotating drum 1 has been stopped once, so there is a high possibility that the balance of clothing has been lost, and it is necessary to start again from the intermittent dehydration process so that unbalance does not occur. These are the same operations as when the lid 7 is suddenly opened. Since an operation that avoids the inconvenience caused by the rotation of the rotating drum 1 is necessary, it is possible to prevent a complicated sequence from occurring by performing the same operation as the opening of the lid. be able to.

  If it is determined in step 45 or step 50 that the lid is open, for safety, the motor 5 is braked and emergency stop is performed in step 53. Originally, the lid lock means 9 is driven in this process and the lid 7 cannot be opened. However, if the lid 7 is opened during the high speed rotation and the hand is put in, it will lead to an unsafe situation. Because of that. Thereafter, the process proceeds to step 54 and step 55, waits for the lid to close, and returns to step 42. These are the same as the filter removal detection.

  As described above, in the present embodiment, the control means 28 interrupts the operation sequence when the magnetic force determination means 26 determines that the filter 20 is lost, so that the filter 20 removed during operation becomes a rotating part. It can be prevented that abnormal noise is generated by hitting or the filter 20 is damaged.

  Further, since the presence or absence of the filter is determined by the magnet 25 built in the filter 20 and the magnetic force determination means 26 that determines the presence or absence of the magnet 25 by the magnetic force, the filter 20 is installed in the water receiving tank 3. However, the magnetic force determination means 26 can determine the presence or absence of the filter 20 in a non-contact manner without having a special structure such as a waterproof treatment, thereby preventing an increase in cost.

  Further, when the control means 28 determines that the filter 20 is lost during the operation of the motor 5, the motor 5 is braked. Even if the filter 20 is removed during the operation, the motor 5 can be applied in a short time. Can be stopped, and the time during which the removed filter 20 hits the rotating part to generate an abnormal noise can be reduced to a shorter time. Further, it is possible to prevent the filter 20 from being damaged to the maximum extent.

  In addition, when the control means 28 determines that the filter 20 is lost and the operation is stopped, the operation is resumed when the lid opening detection means 32 detects the lid closing, and the filter 20 is disconnected. When the operation is interrupted, it is possible to prevent the operation from being suddenly resumed as soon as the filter 20 is attached, thereby improving safety. Further, it is possible to prevent the filter 20 from approaching the vicinity where the filter 20 should be originally attached and restarting the operation before the filter 20 is properly inserted, and to prevent the rotating part from hitting the filter 20 being attached.

  In addition, the control means 28 is configured so that the sequence for restarting the operation is the same as the opening and closing of the lid 7, and when the rotary drum 1 is rotating at a high speed, the filter 20 is removed and the operation is stopped. However, when resuming the operation, the same operation as when the lid 7 is opened and closed can be performed, and the operation can be safely resumed without incorporating a special operation sequence. Can be returned to the rotating state.

  Further, the control means 28 displays that the filter has been removed on the display means 30 when the filter 20 is removed and the operation is interrupted, and the operation is performed because the filter 20 is removed during the operation to the user. Can inform you that you have stopped. As a result, it is possible to prevent the interruption of the operation from being mistaken for a failure and improve the usability.

  In this embodiment, the rotational speed control method for intermittent dehydration is shown in FIG. 8, but these controls are merely examples, and the same effect can be obtained by other rotational speed controls.

(Embodiment 2)
In the present embodiment, when the control means 28 detects the removal of the filter during the drying stroke operation, the control means 28 applies a brake to stop the rotation of the motor 5 and prompts the filter 20 to be attached. When the inside is hot, the lid lock means 9 is stopped so that the lock is not released. Other configurations are the same as those of the first embodiment, and detailed description thereof is omitted.

  The operation of the above configuration will be described with reference to FIG. First, when performing a drying process, the control means 28 operates the lid lock means 9 in step 56 so that the lid 7 is not opened. This is to prevent a dangerous state because if the user suddenly opens the lid 7 during high-speed rotation, it takes time to stop the motor 5 even though the motor 5 is braked. Moreover, when the inside of the rotating drum 1 is high temperature, it is also for preventing the danger that a user will open a cover easily and touch a high temperature part accidentally.

  Next, in step 57, the motor 5 is driven to rotate the rotating drum 1 to promote drying, and the heater 23 is operated to drive the blower fan 16. By these, the dehumidification pipe line 18, the filter 20, the blower pipe line 19, the heating pipe line 21, the heater 23, and the blower opening 22 are generated from the exhaust port 17 to promote drying. The filter 20 collects lint such as dust and lint.

  Next, at step 58 and step 59, the filter removal and the lid opening are detected even during the drying stroke operation. These operations are the same as step 44 and step 45 in the first embodiment. If it is determined that neither the filter is removed nor the lid is opened, it is determined in step 60 whether the drying is completed. If it is determined that the process has not been completed, the process returns to step 57 to continue drying.

  If it is determined in step 60 that drying has been completed, the motor 5 is braked in step 61, the blower fan 16 is stopped, and the heater 23 is turned off. Thereafter, the drying process is terminated and the process proceeds to the next process.

  If it is determined in step 58 that the filter has been removed, there is a possibility that the filter 20 is rolling in the rotary drum 1, and there is a high possibility of breakage. In order to prevent these, in step 62, a display indicating that the filter has been removed is displayed on the numeric display unit 30f. For example, it is possible to notify the user that the filter has been removed by displaying U16.

  Next, at step 63, the motor 5 is braked. This is to prevent the filter 20 from being damaged to the maximum by urgently stopping the motor 5.

  Thereafter, in step 64, the internal temperature of the rotating drum 1 is measured, and if it is determined that the temperature is not high (for example, less than 54 ° C.), the process proceeds to step 65, and the lid lock means 9 is turned on in order to prompt the filter 20 to be attached. Stop and unlock. With these operations, the user can open the lid 7 and attach the filter 20 to the filter insertion portion 24 in accordance with the display of U16 displayed on the number display portion 30f. If it is determined in step 64 that the internal temperature of the rotating drum 1 is higher than a predetermined temperature (for example, 54 ° C.), the process proceeds to step 66 and the lid is not unlocked.

  Next, in step 66, the process waits for the lid 7 to close, returns to step 56, and performs the drying operation again.

  If it is determined in step 59 that the lid is open, for safety, the motor 5 is braked and emergency stop is performed in step 63. Originally, in this process, the lid lock means 9 is driven, so the lid 7 cannot be opened. However, if the lid 7 is opened and the hand is put in during high-speed rotation, it will lead to an unsafe situation. Is going for. Thereafter, the process proceeds to step 64, and the process returns to step 56 through the same process as when the filter is removed.

  As described above, in the present embodiment, the control means 28 interrupts the operation sequence when the magnetic force determination means 26 determines that the filter 20 is lost, so that the filter 20 removed during operation becomes a rotating part. It can be prevented that abnormal noise is generated by hitting or the filter 20 is damaged.

  Further, since the presence or absence of the filter 20 is determined by the magnet 25 built in the filter 20 and the magnetic force determination means 26 that determines the presence or absence of the magnet 25 by the magnetic force, the filter 20 is installed in the water receiving tank 3. Even if it does not have a structure such as a special waterproofing treatment, the magnetic force determination means 26 can determine the presence or absence of the filter 20 in a non-contact manner, and an increase in cost can be prevented.

  In addition, when the control means 28 determines that the filter 20 has run out during the drying operation, the operation is interrupted and the motor 5 is braked. Even when it cannot be recovered, the circulation air is stopped by interrupting the operation of the blower fan 16, and lint such as dust and lint can be prevented from accumulating on the blower path and the blower fan 16. . Further, it is possible to reduce the time during which the removed filter 20 hits the rotating portion and generates an abnormal noise in a shorter time. Further, it is possible to prevent the filter 20 from being damaged to the maximum extent.

  In addition, when the control means 28 determines that the filter 20 is lost and the operation is stopped, the operation is resumed when the lid opening detection means 32 detects the lid closing, and the filter 20 is disconnected. When the operation is stopped, it is possible to prevent the operation from being restarted suddenly after the filter 20 is attached, so that lint collection can be reliably performed and safety can be improved. Moreover, it approaches the vicinity of the place where the filter 20 is supposed to be attached, prevents the operation from restarting before it is properly inserted, and prevents the circulation air from flowing without passing through the filter 20 during the attachment. Lint recovery can be performed.

  In addition, the control means 28 is configured so that the sequence for restarting the operation is the same as the opening and closing of the lid 7, and when the rotary drum 1 is rotating at a high speed, the filter 20 is removed and the operation is stopped. However, when resuming the operation, the same operation as when the lid 7 is opened and closed can be performed, and the operation can be safely resumed without incorporating a special operation sequence. Can be returned to the rotating state.

  Further, the control means 28 determines that the filter 20 has been lost during the drying operation, and prevents the lock from being released when the water receiving tank 3 is hot even when the operation is interrupted. It is possible to avoid the danger of opening the lid 7 and touching the high temperature part.

  In addition, the control means 28 displays that the filter has been removed on the display means 30 when the filter 20 is disconnected and the operation is interrupted. The user can be informed that the operation has been canceled. As a result, it is possible to prevent the interruption of the operation from being mistaken for a failure and improve the usability.

(Embodiment 3)
In the present embodiment, the control means 28 drives the lid lock means 9 when the inside of the water receiving tank 3 is higher than a predetermined temperature when the power is turned on, prevents the lid from opening, and presses the start / pause switch 29f. In this operation, the motor 5 and the blower fan 16 are operated to lower the temperature in the water receiving tank 3 (forced cool-down). At this time, even if a filter removal is detected, the operation is not interrupted. The operation is performed to lower the temperature. Other configurations are the same as those of the first embodiment, and detailed description thereof is omitted.

  In the above configuration, the operation will be described with reference to FIG. First, when the power is turned on, in step 67, the control means 28 determines whether or not the inside of the water receiving tank 3 is higher than a predetermined temperature (for example, 54 ° C.). If it is determined that the temperature is not high (less than 54 ° C.), these processes are terminated, and the next process is started.

  If it is determined in step 67 that the temperature is higher than the predetermined temperature (54 ° C. or higher), the lid lock means 9 is operated in step 68 to lock the lid so that it does not open. This is because there is a risk that the user opens the lid 7 and touches the high temperature part when the water receiving tank 3 is hot, and is locked for safety. Thereafter, in step 69, it is determined whether the start / pause switch 29f has been pressed. If not, the process returns to step 67.

  If it is determined in step 69 that the start / pause switch 29f has been pressed, the process proceeds to step 70 to start forced cool-down operation.

  In step 70, the motor 5 and the blower fan 16 are driven. Thereby, the temperature of the water receiving tank 3 which has been high can be lowered. Although this is for safety, the washing machine body 10 cannot be used by saying that the inside of the refrigerator is hot. This is clearly unusable. Therefore, the function of forcibly lowering the temperature of the water receiving tank 3 is added by pressing the start / pause switch 29f.

  Next, in step 71, it is determined whether the temperature in the water receiving tank 3 is higher than a predetermined temperature. If the temperature is high (for example, 54 ° C. or higher), the process returns to Step 70 and the drive of the motor 5 and the blower fan 16 is continued.

  If it is determined in step 71 that the temperature is not high, the motor 5 and the blower fan 16 are stopped in step 72, the lid lock means 9 is stopped and unlocked in step 73, and the next process is performed. Move.

  In this step 70 and step 71, a problem occurs when the filter 20 is removed. When the filter 20 was removed during operation, there was a function to interrupt the operation. However, if the filter 20 is detached and the operation is interrupted during the forced cool-down operation, the temperature cannot be lowered. Furthermore, if the inside of the cabinet is hot, the lid 7 cannot be opened, and it will just wait for the temperature to drop naturally. In particular, in the case of a drum-type washing and drying machine, since the degree of sealing is high, a considerable time is required until the temperature naturally decreases, and the time during which it cannot be used is long. A similar phenomenon occurs when the filter 20 is removed during the drying operation. At this time, it will naturally wait until the temperature drops.

  Therefore, it is not determined whether the filter 20 is removed during the forced cool-down operation in steps 70 and 71. That is, during the forced cool-down operation, it means that the operation is continued even if the filter 20 is removed.

  As described above, in the present embodiment, the control means 28 interrupts the forced cool-down operation even if the magnetic force determination means 26 determines that the filter 20 is lost when the interior is higher than a predetermined temperature. Even if the filter 20 is removed, the temperature in the cabinet can be lowered in a short time.

  The high determination temperature is determined as 54 ° C. as an example, but the same effect can be obtained even if the determination temperatures in step 67 and step 71 are changed. Further, by lowering the determination temperature in step 71 than in step 67, an effect of reliably lowering the internal temperature can be expected.

  As described above, the washer / dryer according to the present invention can accumulate lint such as dust and lint on the blowing path and the blowing fan even when the filter is removed during the operation, and the filter removed during the operation. Can be prevented from hitting the rotating part and generating abnormal noise or damage to the filter, so that it is useful as a washing dryer that collects lint by the filter.

1 is a partially block circuit diagram of a washing and drying machine according to Embodiment 1 of the present invention. Side sectional view of the washer / dryer Side sectional view which shows the circulation ventilation path which ventilates in the water-receiving tank of the same washing and drying machine Front view showing a filter mounted state of the washer / dryer Top view showing the filter of the washing and drying machine Enlarged front view of the operation section of the washer / dryer Operation flowchart of the washer / dryer Explanatory drawing of the rotational speed control method of intermittent dehydration process of the washing and drying machine Operation flowchart of the washing and drying machine according to the second embodiment of the present invention. Operation flowchart of the washer-dryer according to the third embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating drum 3 Water receiving tank 5 Motor 7 Lid 16 Blower fan (blower means)
20 Filter 25 Magnet 26 Magnetic force determination means (filter presence / absence determination means)
28 control means 30 display means 32 lid open detection means 34 thermistor (temperature measurement means)

Claims (7)

A rotating drum for storing laundry and having a central axis of rotation in a horizontal direction or an inclined direction; a water receiving tub containing the rotating drum and having an opening on the front surface or the upper surface and elastically supporting the washing machine body; A lid that covers the opening of the water receiving tank; a blowing means that blows circulating air into the water receiving tank; a removable filter that collects dust, lint, and the like that is being blown by the blowing means; and A filter presence / absence judging means for judging presence / absence; a motor for driving the rotating drum; and a control means for controlling a series of washing and drying operations, wherein the control means judges that the filter presence / absence judging means has run out of a filter. A washing and drying machine that interrupts operation when it is done. The washing / drying machine according to claim 1, wherein the filter presence / absence determination unit includes a magnet built in the filter and a magnetic force determination unit that determines presence / absence of the magnet by a magnetic force. The washing / drying machine according to claim 1 or 2, wherein when the control unit determines that the filter is lost during operation of the motor, the motor is braked. A lid opening detecting means for detecting opening and closing of the lid is provided, and when the control means judges that the filter is lost and the operation is stopped, the operation is resumed when the lid opening detecting means detects the lid closing. The washing / drying machine according to any one of claims 1 to 3. 5. The washing / drying machine according to claim 4, wherein the control means treats the sequence for restarting the operation the same as opening and closing the lid. Temperature measuring means for measuring the temperature in the water receiving tank, and when the control means determines that the input from the temperature measuring means is higher than a predetermined temperature, ignores the determination by the filter presence / absence determining means, and The washing / drying machine according to any one of claims 1 to 5, wherein an operation for forcibly lowering the temperature in the receiving tank is performed. The washing unit according to any one of claims 1 to 6, further comprising display means for displaying that the filter has been lost, wherein the control means displays that the filter has been lost on the display means when the filter is lost. Dryer.

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