JP2008220449A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily take out clothes after the end of a dewatering process. <P>SOLUTION: During the dewatering process, the unbalanced load amount and position of the clothes stuck inside a rotary drum 5 and rotated are detected by unbalance detection means 18. A control means 17 stops the rotary drum 5 at a position for turning an unbalanced load position to an almost upper part after the end of the dewatering step by the output of the unbalance detection means 18. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine that performs washing / dehydration and drying in the same rotating drum.

  In a drum-type washing machine, clothes are put into a rotating drum filled with detergent and water in the washing process, and the drum is rotated at a relatively low speed (the clothes do not stick to the drum inner wall when the drum is in the upper position due to centrifugal force) By repeating normal rotation and reversal for a predetermined time at the rotation speed), the clothes are repeatedly rotated and dropped in the drum (hereinafter referred to as tumbling), and the clothes are repeatedly beaten against the inner wall of the drum for cleaning.

  When the washing process is completed, the washing water is drained, clean water is poured into the drum, the drum is rotated in the same manner as the washing process, and the detergent components and dirt are removed from the clothes. Rotating the drum at high speed during rinsing (clothing sticks to the inner wall of the drum by centrifugal force at any position of the drum and separates moisture from the clothing to allow dehydration from the clothing to improve rinsing time and improve performance) Speed) is also considered.

  When the rinsing is completed, the rinsing water is drained, the drum is rotated at a high speed, and a dehydration process is performed in which the moisture of the clothes is separated from the drum by centrifugal force. When performing only washing and hanging and drying, when the dehydration process is completed, the clothes are taken out from the drum and are hung on a clothesline or the like to be dried.

  Some drum-type washing machines have a drying function, and the drying process can be performed continuously with clothes in the drum. In this case, after the dehydration process is completed, the drum is rotated in the forward and reverse directions at a relatively low speed as in the washing process, and dry air is circulated in the drum to evaporate moisture from the clothes in the drum. Generally, the clothes in the drum are dried by recondensing and draining the evaporated water from the outside of the main body.

  However, in such a drum-type washing / drying machine, after the dehydration process is completed, the clothes are stopped in a state where they are stuck to the inner wall of the drum by centrifugal force. It was difficult to take out clothes from the drum. Also, when hanging dehydrated clothing in such a state, wrinkles due to dehydration are tightly attached to the clothing, and thus there is an inconvenience that the wrinkles must be stretched and dried.

Furthermore, when it sets so that it may carry out to a drying process automatically, it will be in the state which clothes were sticking to the drum inner wall at the time of completion | finish of a dehydration process, and will enter a drying process in this state. For this reason, the drum is rotated while the clothes are stuck for a while after entering the drying process, and the dry air only passes through the central space in the drum. For this reason, it is difficult for dry air to pass through the interior of the garment, the drying of the garment does not proceed, it takes a long time to finish the drying, and the power consumption required for the drying increases accordingly. For this reason, there is disclosed a configuration in which a rotating stirring drum is provided in a rotating drum, and stuck clothes are scraped off by the stirring blade (for example, see Patent Documents 1 and 2).
JP-A-3-51080 Japanese Patent Laid-Open No. 3-121094

  In such a conventional drum-type washing machine or drum-type washing / drying machine, since dehydration is performed by centrifugal force, the clothes are stopped on the inner wall of the drum with a considerable force at the end of the dehydration process. For this reason, when taking out clothes from a drum, it is necessary to take out clothes so that it may peel off one by one, and it was very difficult to take out.

  Also, when hanging dehydrated clothing in such a state, the wrinkles produced by dehydration are quite tight on the clothing, so that there is an annoyance that the wrinkles must be stretched and dried.

  Further, when the process automatically shifts to the drying process after the dehydration process, the drying process is started in a state where the clothes are stuck to the inner wall of the rotating drum due to the high speed rotation of the rotating drum. When drying is performed in such a state, the clothes remain firmly attached to the inner wall of the rotating drum, and even if the drying air enters the rotating drum, it is difficult for the drying air to pass into the clothes. Only evaporation from the part proceeds. For this reason, the drying time of the clothes is significantly increased, and the drying efficiency is poor, so that the power consumption is increased.

  In order to solve these problems, the clothes attached to the inner wall of the rotating drum in the dehydration process are immediately peeled off, making it easy to take out the clothes and keeping the clothes loose without having to stretch the wrinkles by hand. This makes it possible to stretch out wrinkles. Further, in the drying process, it is necessary to tumbl the clothing by the rotation of the rotating drum so that the dry air uniformly hits the clothing.

  The present invention solves the above-described conventional problems, and immediately removes the sticking of clothes generated in the dehydration process, creates a state in which the clothes move well during drying, increases drying efficiency, and dries in a short time with less power consumption. An object of the present invention is to provide a drum type washing machine that can be used.

  In order to solve the above-described conventional problems, a drum-type washing machine according to the present invention includes a water tub supported in a main body, a cylindrical rotating drum rotatably provided in the water tub by a driving device, and the rotation Control means for controlling the process of washing, dewatering and drying the laundry contained in the drum, and unbalance detection for detecting the unbalanced load amount and position of the clothing stuck and rotating in the rotating drum during the dewatering process And the control means is configured to stop the rotating drum at a position where the uneven load position is substantially above after the dehydration process is finished, based on the output of the unbalance detection means.

  As a result, the position of the unbalance is detected during the spin-drying rotation, and the rotation of the rotating drum is stopped almost at the top of the unbalance. It becomes easy to fall, and the clothes can be peeled off without using another scraping means such as a stirring blade. Therefore, it is easy to take out the clothes after the dehydration process is finished, and those that perform drying can shorten the drying time.

  The drum type washing machine of the present invention facilitates the removal of clothes after the dehydration process, and can be efficiently dried when continuous drying is performed.

  1st invention wash | cleans and spin-dry | dehydrates the water tank supported in the main body, the cylindrical rotating drum rotatably provided in the said water tank by the drive device, and the laundry accommodated in the said rotating drum. A control means for controlling the drying process; and an unloading detection means for detecting an unbalanced load amount and a position of the garment that is stuck and rotated in the rotating drum during the dehydration process, and the control means is configured to detect the unbalancing. By means of the output of the means, the rotary drum is stopped at a position where the offset load position is substantially upward after the dehydration step. As a result, the position of the unbalance is detected during the spin-drying rotation, and the rotation of the rotating drum is stopped almost at the top of the unbalance. It is easy to fall off, and it is easy to remove clothes without using another scraping means such as a stirring blade, but it is easy to take out clothes at the end of the dehydration process. Will disappear.

  In the second aspect of the invention, in particular, the control means of the first aspect of the invention provides a position where the maximum uneven load position is substantially above after the dehydration process is completed when there are a plurality of uneven loads on the clothes stuck in the rotating drum. Since the rotating drum is stopped at the above position, by placing the place with the largest weight upward, the clothes can be more reliably dropped and the clothes stuck to the rotating drum can be peeled off. .

  In the third aspect of the invention, in particular, the control means of the first or second aspect of the invention controls the driving device so as to swing the rotating drum after the dehydration process, so that the vibration of the rotating drum is added to the weight of clothes. Since it adds, clothing will be more easily peeled off more reliably.

  In the fourth aspect of the invention, in particular, the control means of the third aspect of the invention controls the driving device so that the swing angle of the rotary drum is 180 degrees or less, so that the position of the uneven load of the garment is ensured. Since it is possible to obtain the maximum vibration that can remain in a position where the clothes can be peeled off, the clothes can be peeled off more reliably.

  In the fifth aspect of the invention, in particular, the control means of the third or fourth aspect of the invention provides a larger swing angle and maximum swing speed as the unbalanced load of the garment stuck in the rotating drum is smaller. By controlling at least one to increase the time, if the peeling force due to gravity is small due to the unbalanced load state of the clothing, the peeling force due to rocking will be increased, and the clothing will be peeled off more reliably and without waste. It is something that can be done.

  In the sixth aspect of the invention, in particular, the control means of the third or fourth aspect of the invention is configured such that the higher the dehydration rotational speed of the rotating drum set manually or from the outside automatically set by programming, or the longer the rotating time, By controlling at least one so that the moving angle and the maximum swing speed are increased or the swing time is lengthened, the swing angle and the maximum By increasing the moving speed or increasing the swing time, the peeling force is increased, and the clothes can be peeled off more reliably and without waste.

(Embodiment 1)
FIG. 1 is a simplified view of a longitudinal section of a drum-type washing machine according to a first embodiment of the present invention. As shown in FIG. 1, a cylindrical water tub 3 supported by a plurality of elastic bodies 2 is provided inside a main body 1 of a drum-type washing machine so as to absorb vibrations during washing and dehydration. . Inside the water tank 3, a cylindrical rotating drum 5 that accommodates clothes 4 to be washed or dried, such as clothes, is configured to be rotated by a driving motor 6 as a driving device. A number of small holes 5a are provided.

  On the front surface of the main body 1, there are provided an opening 1a for taking in and out the garment 4 and a door 7 for opening and closing the opening 1a. The opening 3 a of the water tank 3 is water-tightly connected to the opening 1 a of the main body 1 by a bellows 8. The bottom of the aquarium 3 has a drain port 9 for discharging washing water, and is connected to a drain hose 11 via a drain valve 10, and its tip is led out of the machine.

  Further, in the case of a drum type washing and drying machine having a drying function, a blowing means 12 for blowing dry air into the rotary drum 5 and a circulation air passage 13 are provided, and in the middle of the circulation air passage 13, taken from clothing. A dehumidifying means 14 for returning the water vapor to the water again and draining it to the outside and a heating means 15 for reheating the dehumidified air to dry air are provided.

  The drive motor 6 that drives the rotary drum 5 is provided with a rotational position detecting means 6b that detects the rotational position of the rotor 6a of the drive motor that is related to the position of the rotary drum 5. Further, as shown in FIG. 2, a torque detection means 16 for detecting the magnitude of the torque of the drive motor 6 by an electric current or the like is provided inside a control means 17 for controlling the entire main body, and the rotational position detection means 6b and the torque are detected. An uncrowding detection means 18 for calculating an unbalanced position by the detection means 16 is also incorporated in the control means 17.

  In the above configuration, when the washing process and the rinsing process are finished and the dehydration process is started, the unbalance detection means 18 incorporated in the control means 17 calculates the unbalance due to the uneven load of the garment 4 in the rotary drum 5. For example, the periodic variation of the torque applied to the drive motor 6 is measured by the torque detection means 16, and the positional relationship of the rotary drum 5 at that time is detected by the rotation position detection means 6b. Is configured to determine.

  This method is the same as the method of measuring the actual vibration and calculating the positional relationship with the drive motor 6 as well as the method of measuring the torque and current value by the torque detection means 16. It is also possible to measure the deflection of the rotating shaft 19 of the drive motor 6.

  As shown in FIG. 3A, the unbalanced position of the garment 4 is detected, and the rotary drum 5 is stopped so that the maximum unbalanced position of the garment 4 is substantially upward when the dehydration is completed. As a result, the garment 4a above the rotating drum 5 is heavier than the other attached portion of the garment 4b, so that it hangs down and is easily peeled off from the inner wall surface of the rotating drum 5. Once the clothes are peeled off, the clothes connected to the surroundings also fall off from the inner wall surface of the rotating drum 5 in a chained manner due to the weight of the clothes, and the clothes 4 are separated as shown in FIG. Accumulate downward. Therefore, the garment 4 is in a relatively disjointed state, and it is easy to take out the garment with little tangling.

  In this state, when the drying process is started, since the clothes 4 are peeled off from the inner wall of the rotary drum 5, the clothes 4 are tumbled at a predetermined rotational speed, and once go to the vicinity of the uppermost part of the rotary drum 5, and then rotate from there. It falls below the drum 5. Therefore, since the dry air passing through the rotary drum 5 hits the clothing 4 and can contact the dry air in a state where the clothing 4 spreads, moisture can be quickly taken away from the clothing 4 and the drying performance can be improved.

  In addition, in the rotation by dehydration, the uneven load position of the garment 4 is not always one. Therefore, when the rotary drum 5 stops at the position where the maximum unbalanced load is obtained in the unbalanced position, the position is almost upward. As a result, the unbalanced load due to the garment 4 is always the largest, resulting in a large gravity, and the garment 4 is most easily peeled off.

(Embodiment 2)
Next, the drum type washing machine in Embodiment 2 will be described based on FIG. After completion of the dehydration process, the garment 4 attached to the inner wall of the rotary drum 5 stops so that the offset load position is substantially upward. In this state, there is no problem if the garment 4 is peeled off due to gravity, but there may be a case where the garment 4 does not peel off. Therefore, after the dehydration process is completed and the rotary drum 5 is stopped, the drive motor 6 is controlled to swing the rotary drum 5. This makes it easier for the garment 4 to peel off due to the gravity due to the uneven load of the garment 4 and the inertial force due to the swing.

  Further, by controlling the above-described swing angle to 180 degrees or less, the uneven load position 4a of the garment 4 swings between the positions D and E shown in FIG. Therefore, the gravity due to the unbalanced load always works in the direction (gravity direction) to be peeled off from the inner wall of the rotary drum 5 and the garment 4 can be peeled off more reliably.

  Furthermore, the garment 4 is controlled by controlling at least one of the swing angle and the maximum swing speed so that the swing time is longer as the unbalanced load of the garment 4 attached to the inner wall of the rotating drum 5 is smaller. When the unbalanced load is small, the peeling force due to gravity is small, so the peeling force due to swinging can be increased, and the garment 4 can be peeled off more reliably and without waste.

  Further, the higher the dehydration rotation number of the rotary drum 5 set manually or automatically by programming, or the longer the rotation time, the greater the sticking force of the garment 4 to the inner wall of the rotary drum 5, so the swing angle By controlling at least one so that the maximum swing speed is large or the swing time is long, the garment 4 can be reliably peeled off.

  As described above, the drum-type washing machine according to the present invention facilitates the removal of clothes after the dehydration process, and can be efficiently dried when continuous drying is performed. It is also useful as a drum type washer / dryer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified diagram of a longitudinal section of a drum-type washing and drying machine according to Embodiment 1 of the present invention. Block diagram of the drum-type washer / dryer (A) (b) Operation explanatory diagram of the drum type washing and drying machine Operation | movement explanatory drawing of the drum type washing-drying machine in Embodiment 2 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 3 Water tank 5 Rotating drum 6 Drive motor (drive device)
6b Rotation position detection means 17 Control means 18 Uncrowd detection means

Claims (6)

Controls the steps of washing, dehydrating and drying the water tank supported in the body, a cylindrical rotating drum rotatably provided in the water tank by a driving device, and the laundry stored in the rotating drum. Control means, and unbalance detection means for detecting the unbalanced load amount and position of the clothing that is stuck and rotated in the rotary drum during the dehydration step, and the control means performs dehydration according to the output of the unbalance detection means. A drum-type washing machine in which the rotating drum is stopped at a position where the uneven load position is substantially above after the process is completed. The control means is configured to stop the rotating drum at a position where the maximum uneven load position is substantially above after the dehydration step when there are a plurality of uneven loads of clothing stuck in the rotating drum. The drum type washing machine as described. The drum-type washing machine according to claim 1 or 2, wherein the control means controls the drive device to swing the rotating drum after the dehydration step. The drum-type washing machine according to claim 3, wherein the control means controls the driving device so that the swing angle of the rotary drum is 180 degrees or less. The control means controls at least one of the swinging angle and the maximum swinging speed so that the swinging time becomes longer as the unbalanced load of the clothes stuck in the rotating drum is smaller. The drum type washing machine as described. The control means increases the swing angle and maximum swing speed as the dewatering rotation number of the rotating drum set manually or programmed automatically from the outside is higher or the rotation time is longer, or the swing time is longer. The drum type washing machine according to claim 3 or 4, wherein at least one is controlled so as to become.