WO2018168417A1 - Washing machine - Google Patents

Washing machine Download PDF

Info

Publication number
WO2018168417A1
WO2018168417A1 PCT/JP2018/006973 JP2018006973W WO2018168417A1 WO 2018168417 A1 WO2018168417 A1 WO 2018168417A1 JP 2018006973 W JP2018006973 W JP 2018006973W WO 2018168417 A1 WO2018168417 A1 WO 2018168417A1
Authority
WO
WIPO (PCT)
Prior art keywords
washing
washing water
rotating cylinder
rotation
water
Prior art date
Application number
PCT/JP2018/006973
Other languages
French (fr)
Japanese (ja)
Inventor
倉掛　敏之
Original Assignee
パナソニックＩｐマネジメント株式会社
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.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201880017647.1A priority Critical patent/CN110431262B/en
Publication of WO2018168417A1 publication Critical patent/WO2018168417A1/en

Links

Images

Classifications

    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the present disclosure relates to a washing machine that performs washing of textile products such as clothing.
  • FIG. 12 is a schematic configuration diagram of a conventional washing machine.
  • a cyclone separator 154 is provided in a bath water supply path constituted by a first water supply pipe 151, a second water supply pipe 152, and a third water supply pipe 153.
  • the bath water supply pump 155 is driven at the time of washing, the water in the drum 156 is introduced into the cyclone separator 154 from the connection pipe 157, and the cyclone separator 154 is free from dirt, lint, etc. Impurities are removed.
  • the water from which impurities are removed is returned to the drum 156 through the second water supply pipe 152 and the first water supply pipe 151.
  • Patent Document 2 in a so-called vertical washing machine in which the rotation axis of the washing tub is set in the vertical direction, it is considered to separate lint and solid substances mixed in the washing water with a cyclone lint separator. Yes.
  • the foreign substances separated from the washing water include sebum and the like having a specific gravity lighter than that of the water and fine substances such as sebum, which are separated from the laundry, and therefore it is difficult to separate them with a liquid cyclone.
  • centrifugal separator in the washing water circulation path to separate foreign substances from the washing water. Centrifugation is performed by applying centrifugal force to washing water containing foreign matter. And it is common to make a centrifugal force act on the washing water in a rotation cylinder by rotating the rotation cylinder provided in the centrifuge part at high speed.
  • the washing water supplied from the water supply unit connected to the water supply or the like may contain air.
  • the washing water contains air by flowing and circulating through the water supply channel.
  • the present disclosure solves the above-described conventional problems, and an object of the present disclosure is to provide a washing machine capable of stably performing a centrifugal separation for separating a dirt substance from washing water soiled by washing.
  • a washing machine includes an outer tub elastically supported in a housing, a washing tub rotatably provided in the outer tub, and a rotational drive of the washing tub.
  • a motor a centrifuge for separating foreign matter contained in the wash water in the outer tub, a pump for circulating the wash water between the outer tub and the centrifuge, the outer tub, the pump, and the A water supply channel through which the washing water is connected to the centrifugal separator, and a controller that controls the washing operation.
  • the centrifuge includes a case through which the washing water flowing through the water passage passes, a hollow rotating cylinder rotatably provided in the case, a driving unit that rotationally drives the rotating cylinder, and the rotation A washing water inlet for allowing the washing water to flow into the cylinder, and a washing water outlet for allowing the washing water to flow out of the rotating cylinder. Further, the control unit performs a deaeration operation for discharging air contained in the wash water flowing into the rotary cylinder from the rotary cylinder before the rotary cylinder rotates regularly at the start of the washing process. Configured to do so.
  • the air contained in the washing water can be discharged from the inside of the rotating cylinder before the high-speed steady rotation of the rotating cylinder, and the fluid present in the rotating cylinder becomes only the washing water, and the fluid density in the rotating cylinder Can be made uniform. Therefore, the fluid in the rotating cylinder at the time of high-speed steady rotation of the rotating cylinder can be stably centrifuged without causing an imbalance due to density deviation caused by the mixture of washing water and air. it can.
  • the washing machine of the present disclosure can stably centrifuge and purify dirt substances from washing water soiled by washing, and can enhance the washing effect.
  • FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present disclosure.
  • FIG. 2 is an enlarged view of the centrifugal separator of the washing machine in the first embodiment of the present disclosure.
  • FIG. 3 is a relationship diagram between D1 and D2 of the centrifugal separator of the washing machine in the first embodiment of the present disclosure.
  • 4 is a cross-sectional view taken along line EE in FIG. 3 of the washing machine according to the first embodiment of the present disclosure.
  • FIG. 5 is a block configuration diagram of the washing machine according to the first embodiment of the present disclosure.
  • FIG. 6 is a time chart illustrating the operation of the washing machine according to the first embodiment of the present disclosure.
  • FIG. 7 is a time chart showing the operation of the washing machine according to the second embodiment of the present disclosure.
  • FIG. 8 is a time chart showing the operation of the washing machine according to the third embodiment of the present disclosure.
  • FIG. 9 is a time chart illustrating the operation of the washing machine according to the fourth embodiment of the present disclosure.
  • FIG. 10 is a time chart illustrating the operation of the washing machine according to the fifth embodiment of the present disclosure.
  • FIG. 11 is a time chart illustrating the operation of the washing machine according to the sixth embodiment of the present disclosure.
  • FIG. 12 is a schematic configuration diagram of a conventional washing machine.
  • a washing machine includes an outer tub elastically supported in a housing, a washing tub rotatably provided in the outer tub, a motor that rotationally drives the washing tub, A centrifuge that separates foreign matter contained in the wash water, a pump that circulates the wash water between the outer tub and the centrifuge, and the outer tub, the pump, and the centrifuge that connect the centrifuge A water supply channel through which the washing water flows, and a control unit that controls a washing operation including at least a washing step.
  • the centrifugal separator includes a case through which the washing water flowing through the water passage passes, a hollow rotary cylinder rotatably provided in the case, a drive unit that rotationally drives the rotary cylinder, A washing water inlet for allowing the washing water to flow into the rotating cylinder; and a washing water outlet for allowing the washing water to flow out of the rotating cylinder.
  • the control unit discharges air contained in the washing water that has flowed into the rotating cylinder from the rotating cylinder before the rotating cylinder rotates regularly at the start of the washing process. It is configured to perform driving.
  • the air contained in the washing water is discharged from the inside of the rotating cylinder before the high-speed steady rotation of the rotating cylinder.
  • the fluid in the rotating cylinder at the time of high-speed steady rotation is only the washing water, and the fluid density in the rotating cylinder can be made uniform. Therefore, the fluid in the rotating cylinder that starts to rotate along with the high-speed steady rotation of the rotating cylinder is quiet and without imbalance due to density deviation caused by the mixture of washing water and air. It becomes possible to perform centrifugation stably. Therefore, it is possible to prevent the generation of unnecessary load on the drive unit due to the occurrence of unbalance and the contact between the rotary cylinder and the case due to the shake of the rotary cylinder due to unbalance.
  • the washing water outlet is formed in the vicinity of the rotation center of the rotating cylinder and above the washing water inlet.
  • the control unit is configured to rotate the rotating cylinder at a speed lower than the steady rotation so that the washing water flows out from the washing water outlet.
  • the washing machine is configured such that, in the first or second aspect, the control unit gradually increases the number of rotations of the rotating cylinder and shifts to the steady rotation in the deaeration operation. .
  • a washing machine is configured such that, in the first or second aspect, the control unit rotates the rotating cylinder for a predetermined time at a rotational speed less than the steady rotation in the deaeration operation.
  • control unit rotates the rotating cylinder for a predetermined time at a rotational speed less than the steady rotation in the deaeration operation. It is configured to repeat the operation to stop for a time and shift to the steady rotation.
  • control unit rotates the rotating cylinder for a predetermined time at a rotation speed less than the steady rotation in the deaeration operation, and then the predetermined time.
  • the engine is configured to gradually increase the rotational speed step by step while stopping or decelerating and to shift to the steady rotation.
  • the washing machine of the seventh aspect is configured such that, in any one of the first to sixth aspects, the control unit rotates the rotating cylinder for a predetermined time after the energization of the pump is stopped.
  • the washing machine according to an eighth aspect is configured such that, in any one of the first to seventh aspects, the control unit rotates the rotating cylinder after a predetermined time from driving the pump. .
  • the air before the rotating cylinder is rotated, the air can be discharged from the rotating cylinder in a state where a large amount of air contained in the washing water is dispersed by the circulating flow. And the air which decreased in washing water is moved to the rotation center of a rotation cylinder by the centrifugal separation effect
  • FIG. 1 is a schematic configuration diagram of a washing machine according to the first embodiment of the present disclosure.
  • FIG. 6 is a time chart illustrating the operation of the washing machine according to the first embodiment of the present disclosure.
  • the outer tub 1 configured in a bottomed cylindrical shape is elastically supported by a plurality of suspension mechanisms 3 inside a housing 2 that forms an outer frame of the washing machine.
  • the washing tub 4 configured in a bottomed cylindrical shape is provided in the outer tub 1.
  • the outer tub 1 and the laundry tub 4 are provided with an opening 6 on the front side (left side in FIG. 1) through which a user puts in and out the laundry 5 such as clothes.
  • the washing tub 4 is provided so as to be rotatable about the rotation shaft 7.
  • a plurality of (for example, three) baffles 8 projecting inward are provided on the peripheral wall surface of the washing tub 4.
  • a large number of small holes 9 are provided on the peripheral wall surface of the washing tub 4, and the inside and outside of the washing tub 4 communicate with each other through the small holes 9 in the outer tub 1.
  • the rotating tubs 7 of the outer tub 1 and the washing tub 4 are provided so as to be inclined forwardly by an angle ⁇ (for example, 20 °) with respect to the horizontal.
  • the rear portion of the outer tub 1 is provided with a configuration in which a motor 10 is driven to rotate forward and backward.
  • the motor 10 is, for example, a brushless DC motor, and the rotation speed can be freely changed by inverter control of the control unit 22 described later.
  • the opening of the outer tub 1 and the opening of the housing 2 are formed to face the opening 6 of the washing tub 4.
  • the opening of the outer tub 1 and the opening of the housing 2 are connected to each other by an expandable bellows-like packing 12 while ensuring an airtight structure.
  • a door 11 for opening and closing the opening is provided on the front surface of the housing 2.
  • a water supply port 13 for supplying washing water is provided on the upper rear surface of the housing 2.
  • the water supply port 13 is connected to a tap faucet 13a.
  • the washing water is tap water supplied from the water supply port 13.
  • a water supply valve 14 and a detergent case 15 are provided on the downstream side of the water supply port 13.
  • the water supply valve 14 is driven to open and close by the control unit 22 to perform water supply and stop.
  • the detergent case 15 is configured to be able to pull out the detergent charging portion 15a from the detergent case 15 to the near side. Thereby, the user can easily put the detergent into the detergent case 15.
  • the washing water supplied from the water supply port 13 flows into the detergent case 15 as indicated by an arrow B.
  • the washing water further flows into the outer tub 1 while dissolving the detergent put in the detergent case 15.
  • a drain port 16 for discharging washing water is provided at the bottom of the outer tub 1.
  • a drainage channel 17 is connected to the drainage port 16.
  • a drain valve 18 is provided in the drain channel 17. The drain valve 18 is opened and closed by the control unit 22, and stores or drains the washing water in the outer tub 1.
  • the water supply channel 19 has one end connected to the drainage channel 17 and the other end connected to the lower front portion of the outer tub 1 to form a circulation path.
  • a pump 20 that circulates wash water in the outer tub 1 and a centrifugal separator 21 are connected to the water supply channel 19.
  • the centrifugal separator 21 is provided on the downstream side of the pump 20.
  • the washing water in the outer tub 1 is circulated by the pump 20 from the drainage channel 17 through the water supply channel 19 as shown by the arrow C and passes through the centrifugal separator 21.
  • the washing water flowing through the water supply channel 19 is configured to flow at a flow velocity of about 2 to 3 m / s, for example. This flow rate is set by the capacity of the pump 20.
  • the washing water passes through the centrifugal separator 21, foreign matters contained in the washing water are separated.
  • the foreign matter includes dirt and yarn released from the laundry, and a water softener contained in a detergent dissolved in the washing water.
  • FIG. 2 is an enlarged view of the centrifugal separator of the washing machine in the present embodiment.
  • FIG. 3 is a relationship diagram between D1 and D2 of the centrifugal separator of the washing machine in the present embodiment.
  • 4 is a cross-sectional view taken along line EE in FIG.
  • the centrifugal separator 21 is provided in the water supply channel 19, and a case 21 a through which washing water passes, a hollow rotating cylinder 21 b that is rotatably provided in the case 21 a, A rotating cylinder motor 21c which is a driving unit for rotating the cylinder 21b.
  • the rotating cylinder 21b is provided with a washing water inlet 21e and a washing water outlet 21f so that the washing water circulated by the pump 20 flows through the inside of the rotating cylinder 21b.
  • the rotary cylinder motor 21c rotates the rotary cylinder 21b as the washing water circulates through the water supply passage 19 by the pump 20.
  • the rotary cylinder motor 21c is set to rotate the rotary cylinder 21b at a high speed, for example, at about 4000 r / min. As the rotating cylinder 21b rotates, the washing water introduced into the rotating cylinder 21b rotates in the rotating cylinder 21b, and a high-speed swirling flow is generated.
  • the washing water introduced into the centrifugal separator 21 flows into the rotating cylinder 21b from the washing water inlet 21e, and swirls by the rotation of the rotating cylinder 21b while flowing out of the washing water outlet 21f, thereby generating centrifugal force. receive.
  • foreign substances such as dirt substances contained in the washing water are configured to be directed toward the inner peripheral surface 21d of the rotating cylinder 21b by centrifugal force.
  • the washing water inlet 21e is provided below the washing water outlet 21f, and the washing water passing through the centrifugal separator 21 flows from the bottom to the top.
  • the washing water inlet 21e provided at the central portion of the lower end surface of the rotating cylinder 21b is formed by providing a plurality (for example, four) of slit-like holes outside the rotating shaft 21g.
  • a washing water outlet 21 f provided at the center of the upper end surface of the rotating cylinder 21 b is provided in accordance with the opening of the water supply passage 19.
  • the opening areas of the water supply passage 19, the washing water inlet 21e, and the washing water outlet 21f are formed to be substantially equal. Each opening is configured to communicate linearly with the center aligned.
  • the diameter D1 around the rotating shaft 21g of the rotating cylinder 21b is larger than the maximum diameter D2 of the washing water inlet 21e and the washing water outlet 21f.
  • the centrifugal force acting on the washing water of the rotating rotating cylinder 21b increases as it goes from the center toward the outer peripheral surface 21d. Therefore, as the foreign matter separated by the centrifugal force from the washing water passing through the rotary cylinder 21b approaches the inner peripheral surface 21d, the foreign matter is held on the inner peripheral surface 21d with a stronger centrifugal force. As a result, the foreign matter separated by the centrifugal force is drawn into the flow of the washing water passing through the rotating cylinder 21b, and is less likely to float again, thereby preventing problems such as reattachment of dirt to the laundry 5. Can do. Therefore, the cleaning power can be improved.
  • the gap between the outer surface of the rotating cylinder 21b and the inner surface of the case 21a is made as narrow as possible so that the circulation of the washing water is reduced as long as the rotation of the rotating cylinder 21b is not hindered.
  • the control unit 22 is provided in the lower part of the housing 2.
  • FIG. 5 is a block configuration diagram of the washing machine according to the present embodiment.
  • the control unit 22 includes an output of the cloth amount detection unit 23 that detects the amount of the laundry 5 put into the washing tub 4 and a water amount that detects the amount of washing water supplied into the outer tub 1.
  • the output of the detection unit 24 and the output of the rotation detection unit 25 that detects the rotational driving of the washing tub 4 are input.
  • the control unit 22 controls the driving of the motor 10, the water supply valve 14, the drain valve 18, the pump 20, the rotary cylinder motor 21c, and the like based on the washing course set by the user through the operation display unit 26, and the washing operation. Execute.
  • the washing operation includes steps such as washing, rinsing, and dehydration.
  • the washing process is a process in which the washing water in which the detergent is dissolved is supplied into the outer tub 1 and the laundry 5 is cleaned while being washed by the rotation of the washing tub 4.
  • a rinsing step is performed, for example, intermediate dehydration 1 (first intermediate dehydration), rinse 1 (first rinse), intermediate dehydration 2 (second intermediate dehydration), and rinse 2 ( Each step is performed in the order of the second rinse).
  • a dehydration process is performed.
  • the user opens the door 11 provided on the front surface of the housing 2 and puts the laundry 5 into the washing tub 4 through the opening 6.
  • the power switch (not shown) of the operation display unit 26 provided on the front upper portion of the housing 2 is turned on, and the start switch (not shown) is operated to start the washing operation. To do.
  • the control unit 22 first detects the amount of the laundry 5 put into the washing tub 4 by the cloth amount detection unit 23.
  • the amount of the laundry 5 is detected from the amount of torque applied to the motor 10 or the current value of the motor 10 when the washing tub 4 is rotated at a low speed.
  • the control unit 22 sets the time of each step of washing, rinsing, and dewatering, and the amount of washing water according to the detected amount of the laundry 5.
  • a predetermined amount of detergent is displayed on the operation display unit 26 according to the amount of the laundry 5.
  • the control unit 22 opens the water supply valve 14 in anticipation of the completion of the introduction of the detergent.
  • the washing water flows into the detergent case 15 from the water supply port 13 and is supplied to the outer tub 1 while dissolving the supplied detergent as indicated by an arrow B (see FIG. 1).
  • the washing water collected at the bottom in the outer tub 1 flows into the washing tub 4 through the small holes 9. Washing water collected in the outer tub 1 is detected by the water amount detection unit 24.
  • the controller 22 closes the water supply valve 14 when a predetermined amount of washing water set in advance is supplied according to the amount of the laundry 5.
  • the control unit 22 drives the motor 10 to rotate the washing tub 4.
  • the washing tub 4 rotates, the laundry 5 in the washing tub 4 is lifted in the rotation direction by the baffle 8 and falls from above, and the laundry 5 accumulated on the bottom surface of the washing tub 4 or the bottom of the washing tub 4. It is beaten up. In this way, tapping is performed by the mechanical force together with the chemical force of the detergent.
  • the number of rotations of the washing tub 4 in which the laundry 5 is beaten and washed is 45 r / min, for example, and is reversed every predetermined time, and the motor 10 is driven to rotate forward and backward.
  • the wash water in the outer tub 1 reaches the centrifugal separator 21 through the water supply channel 19, and the wash water that has passed through the centrifugal separator 21 passes through the outer tub 1. Cycle back to.
  • washing water When the washing water is introduced from the washing water inlet 21e, flows through the rotary cylinder 21b, and flows out from the washing water outlet 21f, a foreign matter having a higher specific gravity than the washing water contained in the washing water (for example, the laundry 5 , Etc. are separated from the laundry 5 toward the inner peripheral surface 21d of the rotating cylinder 21b by the centrifugal force caused by the high-speed rotation of the rotating cylinder 21b.
  • FIG. 6 is a time chart showing the operation of the washing machine in the present embodiment.
  • the steady rotation speed n1 of the rotating cylinder 21b at the time of centrifugation is, for example, about 4000 rpm.
  • the circulation of the washing water is started by driving the pump 20, the rotational speed of the rotary cylinder 21b is gradually increased by the rotary cylinder motor 21c, and reaches the steady rotational speed n1 after a predetermined time T1 (for example, 1 minute). .
  • T1 for example, 1 minute
  • the air contained in the washing water can be discharged from the rotary cylinder 21b before the high-speed steady rotation of the rotary cylinder 21b. And the fluid which exists in the rotation cylinder 21b becomes only washing water, and can make the fluid density in the rotation cylinder 21b uniform.
  • the washing water inlet 21e and the washing water outlet 21f of the rotating cylinder 21b are occupied by the flow through the rotating cylinder 21b by the centrifugal separation operation by the steady rotation of the rotating cylinder 21b after the deaeration operation. Furthermore, since the force directed toward the inner peripheral surface 21d rather than the flow-through portion is always applied by centrifugal force, the flow-through component and the fluid do not mix with each other. Therefore, the foreign matter once centrifuged and directed toward the inside of the rotating cylinder 21b does not return to the flow-through due to the mixing of fluids.
  • the washing water from which the foreign matters have been removed flows into the outer tub 1 through the water supply channel 19 and circulates between the centrifugal separator 21 and the outer tub 1 to proceed with purification.
  • the foreign matter collected on the inner peripheral surface 21d rides on the flow of washing water flowing in the direction opposite to the direction of water supply during the drainage, and is discharged to the outside through the drain valve 18.
  • the rotating cylinder 21b rotates at a steady rotation speed n1 for a predetermined time T2 (for example, 9 minutes), centrifugal separation is performed, and the washing process by tapping is completed.
  • T2 a predetermined time
  • the control unit 22 opens the drain valve 18 and drains the washing water in the outer tub 1 to the outside of the machine. After the drainage is completed, the rinsing process is performed, and the intermediate dehydration 1 is followed by the rinse 1. Also in the rinsing process, as in the washing process, a predetermined amount of washing water is supplied into the outer tub 1, and the laundry tub 4 is rotated to rinse the laundry 5.
  • the drain valve 18 is opened and the washing water in the outer tub 1 is discharged outside the machine, and then the washing tub 4 containing the laundry 5 is rotated at high speed by the motor 10. The laundry is dehydrated.
  • the control unit 22 ends the washing operation.
  • the separation of the foreign matters contained in the washing water can be performed in the rinsing process as well as the washing process.
  • the centrifugal separator 21 By separating the foreign matter that has come out of the laundry into the washing water in the rinsing step by the centrifugal separator 21, the rinsing effect can be enhanced.
  • the washing machine of the present embodiment includes the outer tub 1 elastically supported in the housing 2, the washing tub 4 rotatably provided in the outer tub 1, and the laundry tub 4 being driven to rotate.
  • Motor 10 a centrifugal separator 21 that separates foreign substances contained in the washing water in the outer tub 1, a pump 20 that circulates the washing water between the outer tub 1 and the centrifugal separator 21, and the outer tub 1
  • the water supply path 19 in which the wash water which connects the pump 20 and the centrifuge part 21 flows, and the control part 22 which controls the washing operation including at least a washing process are provided.
  • the centrifugal separator 21 includes a case 21a through which the washing water flowing through the water supply channel 19 passes, a hollow rotating cylinder 21b that is rotatably provided in the case 21a, and a drive unit that rotates the rotating cylinder 21b (rotation).
  • a cylinder motor 21c) a washing water inlet 21e for allowing the washing water to flow into the rotating cylinder 21b, and a washing water outlet 21f for allowing the washing water to flow out of the rotating cylinder 21b.
  • the control part 22 performs the deaeration operation which discharges the air contained in the wash water which flowed into the rotary cylinder 21b from the rotary cylinder 21b before the rotary cylinder 21b rotates regularly at the start of the washing process. Configured to do so.
  • the washing water outlet 21f is formed in the vicinity of the rotation center of the rotating cylinder 21b and above the washing water inlet 21e.
  • the control unit 22 is configured to rotate the rotating cylinder 21b at a lower speed than the steady rotation so that the washing water flows out from the washing water outlet 21f. Air that is lighter than the washing water due to the density difference gathers above the rotating cylinder 21b near the washing water outlet 21f. When the rotating cylinder 21b is rotated, air that is lighter than the washing water gathers at the center of rotation due to centrifugal force. Therefore, air can be effectively discharged from the rotating cylinder 21b by the circulation flow of the washing water passing through the rotating cylinder 21b.
  • the controller 22 is configured to gradually increase the rotational speed of the rotary cylinder 21b and shift to steady rotation in the deaeration operation. Then, the air lighter than the washing water gradually moves to the rotation center of the rotating cylinder 21b due to the density difference and the centrifugal force. Therefore, the lump of air gathered at the center of rotation becomes enormous and is smoothly caught from the rotating cylinder 21b by the circulating flow of the washing water passing through the rotating cylinder 21b without being caught by the washing water outlet 21f and hindering the outflow of air. Air can flow out.
  • Embodiment 2 The feature of the present embodiment is that the deaeration operation is performed by driving the rotating cylinder 21b at a lower speed than the steady rotation before the rotating cylinder 21b rotates normally.
  • Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
  • FIG. 7 is a time chart showing the operation of the washing machine according to the second embodiment of the present disclosure.
  • the rotary cylinder 21b is rotated at a rotation speed n2 (for example, 500 r / min) smaller than the steady rotation speed n1.
  • a predetermined time T3 for example, 30 seconds
  • the rotating cylinder 21b rotates at the steady rotation speed n1 for the predetermined time T2.
  • the control unit 22 is configured to rotate the rotating cylinder 21b for a predetermined time at a rotational speed smaller than the steady rotation in the deaeration operation.
  • air that is lighter than the washing water can be gradually moved to the rotation center of the rotating cylinder 21b by the density difference and the centrifugal force, and can be discharged from the rotating cylinder 21b. Therefore, the lump of air gathered at the center of rotation becomes enormous and is caught by the washing water outlet 21f, so that the outflow of air is not hindered by the circulation flow of the washing water passing through the rotation cylinder 21b. Air can be allowed to flow out.
  • a feature of the present embodiment is that the deaeration operation is performed by repeating the operation of rotating the rotating cylinder 21b for a predetermined time at a rotation speed less than the steady rotation and then stopping for a predetermined time.
  • Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
  • FIG. 8 is a time chart showing the operation of the washing machine according to the third embodiment of the present disclosure.
  • the rotating cylinder 21b when the circulation of the washing water is started by driving the pump 20, the rotating cylinder 21b is rotated at a rotational speed n3 (for example, 1000 r / min) lower than the steady rotational speed n1 for a predetermined time T4 (for example, 3 seconds).
  • the operation of rotating and stopping for a predetermined time T5 (for example, 1 second) is repeated a plurality of times (for example, 3 to 5 times).
  • the rotating cylinder 21b rotates at the steady rotation speed n1 for the predetermined time T2.
  • the control unit 22 repeats the operation of rotating the rotating cylinder 21b for a predetermined time at a rotation speed less than the steady rotation and then stopping for a predetermined time. Then, it is configured to shift to steady rotation.
  • air that is lighter than the washing water gradually moves to the rotation center of the rotating cylinder 21b due to the density difference and the centrifugal force.
  • the stop operation is performed, the amount of air that moves to the center of rotation is reduced as compared with the case where rotation driving is continued. Therefore, the air that collects at the center of rotation does not collect at once, but gradually. Therefore, the lump of air gathered at the center of rotation becomes enormous and is caught by the washing water outlet 21f, and the outflow of air is not hindered by the circulation flow of the washing water passing through the rotation cylinder 21b. Air can be allowed to flow out.
  • the feature of this embodiment is that the rotating cylinder 21b is rotated at a rotational speed less than the steady rotational speed n1 for a predetermined time, and then stopped for a predetermined time or gradually increased while gradually decelerating. It is to be driven.
  • Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
  • FIG. 9 is a time chart showing the operation of the washing machine according to the fourth embodiment of the present disclosure.
  • the rotary cylinder 21b is rotated by the rotary cylinder motor 21c at a rotation speed less than the steady rotation speed n1 for a predetermined time T4 (for example, 3 seconds), and then predetermined.
  • the operation of stopping or decelerating at time T5 (for example, 1 second) is repeated a plurality of times (for example, 3 to 5 times).
  • FIG. 9 shows an example in which the vehicle is decelerated for a predetermined time.
  • the control unit 22 rotates the rotating cylinder 21b for a predetermined time at a rotation speed less than the steady rotation, and then stops or decelerates for a predetermined time. Are gradually increased and shifted to steady rotation. And the operation
  • Such repeated operation can prevent the mass of air gathering in the vicinity of the rotation center of the rotating cylinder 21b from being enlarged, and the air from the rotating cylinder 21b can be smoothly discharged by the circulating flow of washing water passing through the rotating cylinder 21b. Can be drained.
  • FIG. 10 is a time chart showing the operation of the washing machine according to the fifth embodiment of the present disclosure.
  • the rotating cylinder 21 b is washed by passing through the rotating cylinder 21 b by high-speed steady rotation. Apply centrifugal force to water.
  • foreign matters such as dirt contained in the wash water centrifuged from the wash water are held in a pressed state on the inner peripheral surface 21d of the rotary cylinder 21b.
  • the rotating cylinder 21b is rotated for a predetermined time T6 (for example, 5 to 10 seconds), so that the washing water in the rotating cylinder 21b is centrifuged while the washing water is circulating. Force can be applied.
  • the controller 22 is configured to rotate the rotating cylinder 21b for a predetermined time after the energization of the pump 20 is stopped. After the energization of the pump 20 is stopped, the foreign matter such as dirt trapped in the rotating cylinder 21b can be maintained in the rotating cylinder 21b by centrifugal force until the washing water circulates. Therefore, it is possible to prevent the centrifuged product from floating in the rotating cylinder 21b.
  • a feature of the present embodiment is that the rotating cylinder 21b is rotated after a predetermined time from driving the pump 20.
  • Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
  • FIG. 11 is a time chart showing the operation of the washing machine according to the sixth embodiment of the present disclosure.
  • the washing water when the washing water starts to circulate by driving the pump 20, the washing water contains a large amount of air. Therefore, when the rotating cylinder 21b is rotated at the steady rotation speed n1 in such a state, air that is lighter than the washing water moves to the center of rotation of the rotating cylinder 21b due to the density difference and the centrifugal force. Becomes larger and the outflow of air from the washing water outlet 21f is prevented.
  • the rotary cylinder 21b is rotated after a predetermined time T7 (for example, 5 seconds) after the pump 20 is driven. Thereby, before rotating the rotating cylinder 21b, air can be discharged from the rotating cylinder 21b in a state where a large amount of air contained in the washing water is dispersed by the circulation flow.
  • the flow rate of the circulating flow through the water supply channel 19 is, for example, 1 to 2 m / sec, the washing water circulates several times from the time when the pump 20 is driven until the rotating cylinder 21b rotates.
  • the control unit 22 is configured such that the rotary cylinder 21b rotates after a predetermined time from driving the pump 20.
  • the rotating cylinder 21b rotates, air flows out from the rotating cylinder 21b in a state where a large amount of air contained in the washing water is dispersed by the circulation flow. Thereafter, the reduced air in the washing water is moved to the rotation center of the rotating cylinder 21b by the centrifugal separation action by the rotation of the rotating cylinder 21b, so that the washing water passing through the rotating cylinder 21b smoothly flows from the rotating cylinder 21b. Air can be allowed to flow out.
  • the washing machine according to the present disclosure is useful as a washing machine because it can stably centrifuge and purify dirt substances from washing water soiled by washing, and can enhance the washing effect. is there.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

This washing machine is provided with: a centrifugal separation unit (21) for separating foreign matter contained in wash water in an outer tub (1); a pump (20) for circulating the wash water between the outer tub (1) and the centrifugal separation unit (21); a water channel (19) which connects the outer tub (1), the pump (20) and the centrifugal separation unit (21), and through which the wash water flows; and a control unit (22) for controlling a wash operation. The centrifugal separation unit (21) comprises: a case (21a) through which the wash water in the water channel (19) passes; a hollow rotary drum (21b) positioned in the case (21a)so as to enable rotation; a rotary drum motor (21c) for driving the rotation of the rotary drum (21b); a wash water inlet (21e) which allows the wash water to flow into the rotary drum (21b); and a wash water outlet (21f) which allows the wash water to flow out of the rotary drum (21b). At the start of a wash cycle, before the rotary drum (21b) begins its regular rotation, the control unit (22) vents, from the rotating cylinder (21b), air mixed into the wash water that has entered the rotary drum (21b).

Description

洗濯機Washing machine
　本開示は、衣類等の繊維製品の洗濯を行う洗濯機に関する。 The present disclosure relates to a washing machine that performs washing of textile products such as clothing.
　従来の洗濯機において、洗濯中に洗濯物から遊離した汚れおよび糸屑等の不純物を洗濯水から分離して洗濯水を浄化し、洗濯物への再付着を防止することが考えられている（特許文献１、２参照）。 In a conventional washing machine, it is considered that impurities such as dirt and lint separated from the laundry during washing are separated from the washing water to purify the washing water and prevent reattachment to the laundry ( (See Patent Documents 1 and 2).
　図１２は、従来の洗濯機の概略構成図である。図１２に示されるように、第１の給水管１５１と、第２の給水管１５２および第３の給水管１５３で構成された風呂水供給路に、サイクロン式分離器１５４が設けられている。洗濯時に風呂水供給ポンプ１５５が駆動されると、ドラム１５６内の水が、接続管１５７からサイクロン式分離器１５４に導入され、サイクロン式分離器１５４において、洗濯物から遊離した汚れおよび糸屑等の不純物が取り除かれる。不純物が取り除かれた水は、第２の給水管１５２および第１の給水管１５１を通して、ドラム１５６内に戻される。 FIG. 12 is a schematic configuration diagram of a conventional washing machine. As shown in FIG. 12, a cyclone separator 154 is provided in a bath water supply path constituted by a first water supply pipe 151, a second water supply pipe 152, and a third water supply pipe 153. When the bath water supply pump 155 is driven at the time of washing, the water in the drum 156 is introduced into the cyclone separator 154 from the connection pipe 157, and the cyclone separator 154 is free from dirt, lint, etc. Impurities are removed. The water from which impurities are removed is returned to the drum 156 through the second water supply pipe 152 and the first water supply pipe 151.
　また、特許文献２では、洗濯槽の回転軸を鉛直方向に設定したいわゆる縦型洗濯機において、サイクロン糸屑分離器により洗濯水に混在する糸屑および固形物質を分離することが、考えられている。 Further, in Patent Document 2, in a so-called vertical washing machine in which the rotation axis of the washing tub is set in the vertical direction, it is considered to separate lint and solid substances mixed in the washing water with a cyclone lint separator. Yes.
　しかしながら、前記従来の構成では、洗濯水から異物を確実に分離すること、および、分離された異物が循環する洗濯水へ再混入してしまうことを防止すること、が難しいという課題がある。すなわち、洗濯水から分離する異物には、洗濯物から遊離した皮脂等の比重が水より軽いもの、および、微細なものが含まれるため、これらを液体サイクロンで分離することは難しい。加えて、分離した異物を液体サイクロンの内部に留め置き、循環する洗濯水への再混入を防止することは困難である。 However, in the conventional configuration, there is a problem that it is difficult to reliably separate foreign substances from the washing water and to prevent the separated foreign substances from being mixed again into the circulating washing water. That is, the foreign substances separated from the washing water include sebum and the like having a specific gravity lighter than that of the water and fine substances such as sebum, which are separated from the laundry, and therefore it is difficult to separate them with a liquid cyclone. In addition, it is difficult to keep the separated foreign matter inside the hydrocyclone and prevent re-mixing into the circulating wash water.
　また、液体サイクロンによる異物の分離には、一般的に、運転中に処理する液体の一部を廃棄する必要がある。そのため、洗濯水の浄化に液体サイクロンを利用した場合は、洗濯中に洗濯水が減少する。運転の開始時に、洗濯物の量に応じて給水された適量を維持するには、洗濯中に補給水が必要になり、洗濯時に使用する水量が増加するという課題がある。 In addition, in order to separate foreign substances using a liquid cyclone, it is generally necessary to discard a part of the liquid to be treated during operation. For this reason, when a hydrocyclone is used to purify the washing water, the washing water decreases during washing. In order to maintain an appropriate amount of water supplied according to the amount of laundry at the start of operation, there is a problem that makeup water is required during washing and the amount of water used during washing increases.
　そこで、液体サイクロンが有するこれらの課題を解決するために、洗濯水の循環路に遠心分離部を設け、異物を洗濯水から分離することが考えられる。遠心分離は、異物を含んだ洗濯水に遠心力を作用させることによって行われる。そして、遠心分離部内に設けられた回転筒を高速回転させることによって、回転筒内の洗濯水に遠心力を作用させるのが、一般的である。 Therefore, in order to solve these problems of the hydrocyclone, it is conceivable to provide a centrifugal separator in the washing water circulation path to separate foreign substances from the washing water. Centrifugation is performed by applying centrifugal force to washing water containing foreign matter. And it is common to make a centrifugal force act on the washing water in a rotation cylinder by rotating the rotation cylinder provided in the centrifuge part at high speed.
　しかしながら、洗濯水を外槽と遠心分離部との間で循環させる洗濯機においては、洗い工程の開始時に、洗濯水に空気が混在していると、密度に偏りが生じる。そのため、遠心分離部内で高速回転する回転筒に、アンバランスが発生して、安定的に遠心分離動作を行うことができない、という課題がある。すなわち、アンバランスが発生すると、高速で回転する回転筒に振れが生じるとともに、駆動部の無駄な負荷が発生する。 However, in a washing machine that circulates washing water between the outer tub and the centrifugal separator, if air is mixed in the washing water at the start of the washing process, the density is biased. Therefore, there is a problem that imbalance occurs in the rotating cylinder that rotates at a high speed in the centrifugal separator, and the centrifugal separation operation cannot be performed stably. That is, when an imbalance occurs, the rotating cylinder that rotates at high speed is shaken, and a wasteful load on the drive unit is generated.
　洗濯水への空気の混在は、洗い工程において発生する。例えば、ポンプの駆動によって洗濯水の循環が開始されると、水道等に接続された給水部から給水される洗濯水に、空気が含まれている場合がある。さらに、ポンプの駆動により洗濯水に空気が巻き込まれる場合、および、洗濯水が流れる送水路に設けられた蛇腹部（例えば、振動吸収用等）により空気が巻き込まれる場合等がある。このような場合、洗濯水が送水路を流れて循環することによって、洗濯水に空気が含まれる。 混 在 Mixing of air into the wash water occurs during the washing process. For example, when the circulation of the washing water is started by driving the pump, the washing water supplied from the water supply unit connected to the water supply or the like may contain air. Furthermore, there are a case where air is caught in the washing water by driving the pump and a case where air is caught by a bellows part (for example, for vibration absorption) provided in a water supply path through which the washing water flows. In such a case, the washing water contains air by flowing and circulating through the water supply channel.
特開２００５－１５２２１２号公報JP-A-2005-152212 特開２００１－７０６９４号公報JP 2001-70694 A
　本開示は、前記従来の課題を解決するもので、洗濯で汚れた洗濯水から汚れ物質を分離する遠心分離を安定的に行うことができる洗濯機を提供することを、目的とする。 The present disclosure solves the above-described conventional problems, and an object of the present disclosure is to provide a washing machine capable of stably performing a centrifugal separation for separating a dirt substance from washing water soiled by washing.
　前記従来の課題を解決するために、本開示の洗濯機は、筐体内に弾性支持された外槽と、前記外槽内に回転可能に設けられた洗濯槽と、前記洗濯槽を回転駆動するモータと、前記外槽内の洗濯水に含まれる異物を分離する遠心分離部と、前記外槽と前記遠心分離部との間で洗濯水を循環させるポンプと、前記外槽と前記ポンプと前記遠心分離部とをつなぐ洗濯水が流れる送水路と、洗濯運転を制御する制御部と、を備える。そして、前記遠心分離部は、前記送水路を流れる洗濯水が通過するケースと、前記ケース内に回転可能に設けられた中空の回転筒と、前記回転筒を回転駆動する駆動部と、前記回転筒に洗濯水を流入させる洗濯水入口と、前記回転筒から洗濯水を流出させる洗濯水出口と、を有する。また、前記制御部は、洗い工程の開始時に、前記回転筒が定常回転する前に、前記回転筒内に流入した洗濯水に含まれる空気を、前記回転筒内から排出する脱気運転を実行するように、構成される。 In order to solve the above-described conventional problems, a washing machine according to the present disclosure includes an outer tub elastically supported in a housing, a washing tub rotatably provided in the outer tub, and a rotational drive of the washing tub. A motor, a centrifuge for separating foreign matter contained in the wash water in the outer tub, a pump for circulating the wash water between the outer tub and the centrifuge, the outer tub, the pump, and the A water supply channel through which the washing water is connected to the centrifugal separator, and a controller that controls the washing operation. The centrifuge includes a case through which the washing water flowing through the water passage passes, a hollow rotating cylinder rotatably provided in the case, a driving unit that rotationally drives the rotating cylinder, and the rotation A washing water inlet for allowing the washing water to flow into the cylinder, and a washing water outlet for allowing the washing water to flow out of the rotating cylinder. Further, the control unit performs a deaeration operation for discharging air contained in the wash water flowing into the rotary cylinder from the rotary cylinder before the rotary cylinder rotates regularly at the start of the washing process. Configured to do so.
　これによって、回転筒の高速定常回転前に洗濯水に含まれる空気を、回転筒内から排出することができ、回転筒内に存在する流体は洗濯水のみとなって、回転筒内の流体密度を均一にすることができる。したがって、回転筒の高速定常回転時における回転筒内の流体は、洗濯水と空気が混在することに起因する密度の片寄りによるアンバランスを発生させることなく、安定的に遠心分離を行うことができる。 As a result, the air contained in the washing water can be discharged from the inside of the rotating cylinder before the high-speed steady rotation of the rotating cylinder, and the fluid present in the rotating cylinder becomes only the washing water, and the fluid density in the rotating cylinder Can be made uniform. Therefore, the fluid in the rotating cylinder at the time of high-speed steady rotation of the rotating cylinder can be stably centrifuged without causing an imbalance due to density deviation caused by the mixture of washing water and air. it can.
　本開示の洗濯機は、洗濯で汚れた洗濯水から汚れ物質を安定的に遠心分離して浄化することができ、洗浄効果を高めることができる。 </ RTI> The washing machine of the present disclosure can stably centrifuge and purify dirt substances from washing water soiled by washing, and can enhance the washing effect.
図１は本開示の実施の形態１における洗濯機の概略構成図である。FIG. 1 is a schematic configuration diagram of a washing machine according to Embodiment 1 of the present disclosure. 図２は本開示の実施の形態１における洗濯機の遠心分離部の拡大図である。FIG. 2 is an enlarged view of the centrifugal separator of the washing machine in the first embodiment of the present disclosure. 図３は本開示の実施の形態１における洗濯機の遠心分離部のＤ１とＤ２の関係図である。FIG. 3 is a relationship diagram between D1 and D2 of the centrifugal separator of the washing machine in the first embodiment of the present disclosure. 図４は本開示の実施の形態１における洗濯機の図３におけるＥ－Ｅ断面図である。4 is a cross-sectional view taken along line EE in FIG. 3 of the washing machine according to the first embodiment of the present disclosure. 図５は本開示の実施の形態１における洗濯機のブロック構成図である。FIG. 5 is a block configuration diagram of the washing machine according to the first embodiment of the present disclosure. 図６は本開示の実施の形態１における洗濯機の動作を示すタイムチャートである。FIG. 6 is a time chart illustrating the operation of the washing machine according to the first embodiment of the present disclosure. 図７は本開示の実施の形態２における洗濯機の動作を示すタイムチャートである。FIG. 7 is a time chart showing the operation of the washing machine according to the second embodiment of the present disclosure. 図８は本開示の実施の形態３における洗濯機の動作を示すタイムチャートである。FIG. 8 is a time chart showing the operation of the washing machine according to the third embodiment of the present disclosure. 図９は本開示の実施の形態４における洗濯機の動作を示すタイムチャートである。FIG. 9 is a time chart illustrating the operation of the washing machine according to the fourth embodiment of the present disclosure. 図１０は本開示の実施の形態５における洗濯機の動作を示すタイムチャートである。FIG. 10 is a time chart illustrating the operation of the washing machine according to the fifth embodiment of the present disclosure. 図１１は本開示の実施の形態６における洗濯機の動作を示すタイムチャートである。FIG. 11 is a time chart illustrating the operation of the washing machine according to the sixth embodiment of the present disclosure. 図１２は従来の洗濯機の概略構成図である。FIG. 12 is a schematic configuration diagram of a conventional washing machine.
　第１の態様の洗濯機は、筐体内に弾性支持された外槽と、前記外槽内に回転可能に設けられた洗濯槽と、前記洗濯槽を回転駆動するモータと、前記外槽内の洗濯水に含まれる異物を分離する遠心分離部と、前記外槽と前記遠心分離部との間で前記洗濯水を循環させるポンプと、前記外槽と前記ポンプと前記遠心分離部とをつなぐ前記洗濯水が流れる送水路と、少なくとも洗い工程を含む洗濯運転を制御する制御部と、を備える。そして、前記遠心分離部は、前記送水路を流れる前記洗濯水が通過するケースと、前記ケース内に回転可能に設けられた中空の回転筒と、前記回転筒を回転駆動する駆動部と、前記回転筒に前記洗濯水を流入させる洗濯水入口と、前記回転筒から前記洗濯水を流出させる洗濯水出口と、を有する。また、前記制御部は、前記洗い工程の開始時に、前記回転筒が定常回転する前に、前記回転筒内に流入した前記洗濯水に含まれる空気を、前記回転筒内から排出する、脱気運転を実行するように構成される。 A washing machine according to a first aspect includes an outer tub elastically supported in a housing, a washing tub rotatably provided in the outer tub, a motor that rotationally drives the washing tub, A centrifuge that separates foreign matter contained in the wash water, a pump that circulates the wash water between the outer tub and the centrifuge, and the outer tub, the pump, and the centrifuge that connect the centrifuge A water supply channel through which the washing water flows, and a control unit that controls a washing operation including at least a washing step. The centrifugal separator includes a case through which the washing water flowing through the water passage passes, a hollow rotary cylinder rotatably provided in the case, a drive unit that rotationally drives the rotary cylinder, A washing water inlet for allowing the washing water to flow into the rotating cylinder; and a washing water outlet for allowing the washing water to flow out of the rotating cylinder. In addition, the control unit discharges air contained in the washing water that has flowed into the rotating cylinder from the rotating cylinder before the rotating cylinder rotates regularly at the start of the washing process. It is configured to perform driving.
　これにより、回転筒を通過する洗濯水に含まれる汚れ等の異物を遠心分離するために、回転筒の高速定常回転前に洗濯水に含まれる空気を回転筒内から排出することにより、回転筒の高速定常回転時における回転筒内の流体は、洗濯水のみとなり、回転筒内の流体密度を、均一にすることができる。したがって、回転筒の高速定常回転にともなって回転運動を始める回転筒内の流体は、洗濯水と空気とが混在することに起因する密度の片寄りによるアンバランスが、発生することなく、静粛かつ安定的に遠心分離を行うことが、可能となる。よって、アンバランスが発生することによる駆動部の無駄な負荷発生、および、アンバランスによる回転筒の振れによって回転筒とケースの接触を、防止することができる。 Thus, in order to centrifuge foreign matters such as dirt contained in the washing water passing through the rotating cylinder, the air contained in the washing water is discharged from the inside of the rotating cylinder before the high-speed steady rotation of the rotating cylinder. The fluid in the rotating cylinder at the time of high-speed steady rotation is only the washing water, and the fluid density in the rotating cylinder can be made uniform. Therefore, the fluid in the rotating cylinder that starts to rotate along with the high-speed steady rotation of the rotating cylinder is quiet and without imbalance due to density deviation caused by the mixture of washing water and air. It becomes possible to perform centrifugation stably. Therefore, it is possible to prevent the generation of unnecessary load on the drive unit due to the occurrence of unbalance and the contact between the rotary cylinder and the case due to the shake of the rotary cylinder due to unbalance.
　第２の態様の洗濯機は、第１の態様において、前記洗濯水出口が、前記回転筒の回転中心近傍で、かつ、前記洗濯水入口の上方に形成される。そして、前記制御部は、前記脱気運転において、前記回転筒を前記定常回転より低速で回転させ、前記洗濯水出口から前記洗濯水を流出させるように構成される。 In the washing machine of the second aspect, in the first aspect, the washing water outlet is formed in the vicinity of the rotation center of the rotating cylinder and above the washing water inlet. In the deaeration operation, the control unit is configured to rotate the rotating cylinder at a speed lower than the steady rotation so that the washing water flows out from the washing water outlet.
　これにより、密度差によって洗濯水より軽い空気は、洗濯水出口に近い回転筒の上方に集まる。また、回転筒を回転させると遠心力によって、洗濯水よりも軽い空気は、回転中心に集まる。したがって、回転筒を通過する洗濯水の循環流によって、空気を回転筒から効果的に流出させることができる。 Thereby, air that is lighter than the washing water due to the density difference gathers above the rotating cylinder near the washing water outlet. Further, when the rotating cylinder is rotated, air that is lighter than the washing water gathers at the center of rotation due to centrifugal force. Therefore, air can be effectively discharged from the rotating cylinder by the circulation flow of the washing water passing through the rotating cylinder.
　第３の態様の洗濯機は、第１または第２の態様において、前記制御部が、前記脱気運転において、前記回転筒の回転数を漸増し、前記定常回転に移行するように構成される。 The washing machine according to a third aspect is configured such that, in the first or second aspect, the control unit gradually increases the number of rotations of the rotating cylinder and shifts to the steady rotation in the deaeration operation. .
　これにより、密度差と遠心力によって、洗濯水より軽い空気は、回転筒の回転中心へ徐々に移動する。そのため、回転中心に集まった空気の塊が巨大化して、洗濯水出口に引っかかって空気の流出が妨げられることなく、回転筒を通過する洗濯水の循環流によって、空気を回転筒から円滑に流出させることができる。 Thereby, air lighter than washing water gradually moves to the rotation center of the rotating cylinder due to the density difference and centrifugal force. Therefore, the air mass gathered at the center of rotation becomes enormous, and the air flows smoothly out of the rotating cylinder by the circulating flow of the washing water passing through the rotating cylinder without being blocked by the washing water outlet and flowing out of the air. Can be made.
　第４の態様の洗濯機は、第１または第２の態様において、前記制御部が、前記脱気運転において、前記回転筒を前記定常回転より少ない回転数で、所定時間回転させるように構成される。 A washing machine according to a fourth aspect is configured such that, in the first or second aspect, the control unit rotates the rotating cylinder for a predetermined time at a rotational speed less than the steady rotation in the deaeration operation. The
　これにより、密度差と遠心力によって、洗濯水より軽い空気を、回転筒の回転中心へ徐々に移動させて、回転筒から流出させることができる。そのため、回転中心に集まった空気の塊が巨大化して、洗濯水出口に引っかかって空気の流出が妨げられることなく、回転筒を通過する洗濯水の循環流によって、空気を回転筒から円滑に流出させることができる。 This allows air that is lighter than the wash water to gradually move to the rotation center of the rotating cylinder and flow out of the rotating cylinder by the density difference and centrifugal force. Therefore, the air mass gathered at the center of rotation becomes enormous, and the air flows smoothly out of the rotating cylinder by the circulating flow of the washing water passing through the rotating cylinder without being blocked by the washing water outlet and flowing out of the air. Can be made.
　第５の態様の洗濯機は、第１または第２の態様において、前記制御部が、前記脱気運転において、前記回転筒を、前記定常回転より少ない回転数で所定時間回転させた後、所定時間停止する動作を繰り返し、前記定常回転に移行するように構成される。 In the washing machine of the fifth aspect according to the first or second aspect, the control unit rotates the rotating cylinder for a predetermined time at a rotational speed less than the steady rotation in the deaeration operation. It is configured to repeat the operation to stop for a time and shift to the steady rotation.
　これにより、密度差と遠心力によって、洗濯水よりも軽い空気は、回転筒の回転中心へ徐々に移動する。しかし、その量は、回転駆動を続けた場合と比較して、少なくなる。よって、回転中心に集まる空気は、一度には集まらず、少しずつとなる。よって、回転中心に集まった空気の塊が巨大化して、洗濯水出口に引っかかって空気の流出が妨げられることなく、回転筒を通過する洗濯水の循環流によって、空気を回転筒から円滑に流出させることができる。 This allows air that is lighter than the wash water to gradually move to the rotation center of the rotating cylinder due to the density difference and centrifugal force. However, the amount is smaller than that in the case where the rotation drive is continued. Therefore, the air that collects at the center of rotation does not collect at once, but gradually. Therefore, the air mass gathered at the center of rotation becomes enormous, and the air flows smoothly out of the rotating cylinder by the circulation of the washing water passing through the rotating cylinder without being caught by the outlet of the washing water and preventing the air from flowing out. Can be made.
　第６の態様の洗濯機は、第１または第２の態様において、前記制御部が、前記脱気運転において、前記回転筒を、前記定常回転より少ない回転数で所定時間回転させた後、所定時間停止または減速しながら回転数を段階的に漸増し、前記定常回転に移行するように構成される。 In the washing machine of the sixth aspect according to the first or second aspect, the control unit rotates the rotating cylinder for a predetermined time at a rotation speed less than the steady rotation in the deaeration operation, and then the predetermined time. The engine is configured to gradually increase the rotational speed step by step while stopping or decelerating and to shift to the steady rotation.
　これにより、回転筒の駆動時に気泡が回転中心に集まった後、停止または減速時に、気泡が回転中心に集まる作用を、停止または弱めるので、洗濯水の循環流によって、空気を回転筒から流出させることができる。したがって、洗濯水に含まれる回転筒内の気泡を、徐々に脱気することでできる。よって、回転中心近傍に集まった空気の塊が巨大化して、洗濯水出口に引っかかって空気の流出が妨げられることなく、回転筒を通過する洗濯水の循環流によって、空気を回転筒から円滑に流出させることができる。また、回転筒の回転数を段階的に漸増することにより、当初は比較的大きな気泡を脱気し、次第に比較的小さな気泡を、少しずつ集めて脱気することが可能となる。したがって、回転筒内に含まれる空気の脱気を、一度に行う際のリスクを、回避することができる。 This stops or weakens the action of bubbles gathering at the center of rotation after stopping and slowing down after the bubbles gather at the center of rotation when the rotating cylinder is driven, so that the air flows out of the rotating cylinder by the circulating flow of washing water. be able to. Therefore, it is possible to gradually deaerate bubbles in the rotating cylinder contained in the washing water. Therefore, the lump of air gathered near the rotation center becomes enormous, and the air flows smoothly from the rotating cylinder by the circulating flow of the washing water passing through the rotating cylinder without being caught at the washing water outlet and hindering the outflow of air. Can be drained. Further, by gradually increasing the rotational speed of the rotating cylinder in stages, relatively large bubbles can be initially degassed, and relatively small bubbles can be gradually collected and degassed little by little. Therefore, the risk at the time of deaeration of the air contained in a rotating cylinder can be avoided.
　第７の態様の洗濯機は、第１～第６のうちいずれか１つの態様において、前記制御部が、前記ポンプの通電停止後、前記回転筒を所定時間回転させるように構成される。 The washing machine of the seventh aspect is configured such that, in any one of the first to sixth aspects, the control unit rotates the rotating cylinder for a predetermined time after the energization of the pump is stopped.
　これにより、ポンプの通電停止により少なくとも洗濯水の循環流がなくなるまでの間、遠心力で回転筒に捕捉されている汚れ等の異物を、回転筒に保持した状態に維持することができる。よって、遠心分離物が回転筒内で浮遊するのを防止することができる。 Thus, foreign matters such as dirt trapped in the rotating cylinder by centrifugal force can be maintained in the rotating cylinder until the circulating flow of the washing water disappears due to the stop of energization of the pump. Therefore, it is possible to prevent the centrifuged product from floating in the rotating cylinder.
　第８の態様の洗濯機は、第１～第７のうちいずれか１つの態様において、前記制御部が、前記ポンプを駆動してから所定時間後に、前記回転筒を回転させるように構成される。 The washing machine according to an eighth aspect is configured such that, in any one of the first to seventh aspects, the control unit rotates the rotating cylinder after a predetermined time from driving the pump. .
　ポンプの駆動による洗濯水の循環開始当初は、洗濯水に多量の空気が含まれるため、このような状態で回転筒を定常回転で駆動すると、密度差と遠心力によって、洗濯水よりも軽い空気は回転筒の回転中心へ移動する。そして、集まった空気の塊が巨大化して、洗濯水出口からの空気の流出が妨げられる。 At the beginning of the circulation of the wash water by driving the pump, since the wash water contains a large amount of air, if the rotating cylinder is driven at a steady rotation in such a state, the air is lighter than the wash water due to the density difference and centrifugal force. Moves to the center of rotation of the rotating cylinder. And the lump of air which gathered becomes huge and the outflow of the air from a washing water exit is prevented.
　しかし、上記の構成により、回転筒を回転させる前に、循環流によって、洗濯水に含まれる多量の空気が分散した状態で、空気を回転筒から流出させることができる。そして、洗濯水中の減少した空気を、回転筒の回転による遠心分離作用によって、回転筒の回転中心へ移動させる。よって、回転筒を通過する洗濯水の循環流によって、空気を回転筒から円滑に流出させることができる。 However, with the above configuration, before the rotating cylinder is rotated, the air can be discharged from the rotating cylinder in a state where a large amount of air contained in the washing water is dispersed by the circulating flow. And the air which decreased in washing water is moved to the rotation center of a rotation cylinder by the centrifugal separation effect | action by rotation of a rotation cylinder. Therefore, the air can be smoothly discharged from the rotating cylinder by the circulation flow of the washing water passing through the rotating cylinder.
　以下、本開示の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって、本開示が限定されるものではない。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited by the embodiment.
　（実施の形態１）
　図１は、本開示の第１の実施の形態における洗濯機の概略構成図である。図６は、本開示の実施の形態１における洗濯機の動作を示すタイムチャートである。 (Embodiment 1)
FIG. 1 is a schematic configuration diagram of a washing machine according to the first embodiment of the present disclosure. FIG. 6 is a time chart illustrating the operation of the washing machine according to the first embodiment of the present disclosure.
　図１に示されるように、有底筒状に構成された外槽１は、洗濯機の外枠を構成する筐体２の内部で、複数のサスペンション機構３によって、弾性的に支持されている。有底筒状に構成された洗濯槽４は、外槽１内に設けられている。外槽１と洗濯槽４には、前面側（図１において左側）に使用者が衣類等の洗濯物５を出し入れする開口部６が、設けられている。 As shown in FIG. 1, the outer tub 1 configured in a bottomed cylindrical shape is elastically supported by a plurality of suspension mechanisms 3 inside a housing 2 that forms an outer frame of the washing machine. . The washing tub 4 configured in a bottomed cylindrical shape is provided in the outer tub 1. The outer tub 1 and the laundry tub 4 are provided with an opening 6 on the front side (left side in FIG. 1) through which a user puts in and out the laundry 5 such as clothes.
　洗濯槽４は、回転軸７を中心として、回転可能に設けられている。洗濯槽４の周壁面には、内方へ突出した複数（例えば、３個）のバッフル８が設けられている。さらに、洗濯槽４の周壁面には、多数の小孔９が設けられ、外槽１内において洗濯槽４の内外は、小孔９を通して連通している。外槽１および洗濯槽４の回転軸７は、水平に対して角度θ（例えば、２０°）だけ、前上がりに傾けて設けられている。 The washing tub 4 is provided so as to be rotatable about the rotation shaft 7. A plurality of (for example, three) baffles 8 projecting inward are provided on the peripheral wall surface of the washing tub 4. Further, a large number of small holes 9 are provided on the peripheral wall surface of the washing tub 4, and the inside and outside of the washing tub 4 communicate with each other through the small holes 9 in the outer tub 1. The rotating tubs 7 of the outer tub 1 and the washing tub 4 are provided so as to be inclined forwardly by an angle θ (for example, 20 °) with respect to the horizontal.
　外槽１の後部には、モータ１０が正逆回転自在に駆動するような構成で設けられている。モータ１０は、例えばブラシレス直流モータであり、後述する制御部２２のインバータ制御によって、回転速度を自在に変化させることができる。 The rear portion of the outer tub 1 is provided with a configuration in which a motor 10 is driven to rotate forward and backward. The motor 10 is, for example, a brushless DC motor, and the rotation speed can be freely changed by inverter control of the control unit 22 described later.
　外槽１の開口部と筐体２の開口部とは、洗濯槽４の開口部６と対向して形成されている。外槽１の開口部と筐体２の開口部とは、伸縮自在な蛇腹状のパッキン１２によって、気密構成を確保して連結されている。筐体２の前面には、開口部を開閉する扉１１が設けられている。 The opening of the outer tub 1 and the opening of the housing 2 are formed to face the opening 6 of the washing tub 4. The opening of the outer tub 1 and the opening of the housing 2 are connected to each other by an expandable bellows-like packing 12 while ensuring an airtight structure. A door 11 for opening and closing the opening is provided on the front surface of the housing 2.
　洗濯水を供給する給水口１３が、筐体２の後面上部に設けられている。給水口１３は、水道の蛇口１３ａと接続されている。洗濯水は、給水口１３から供給される水道水である。給水口１３の下流側に、給水弁１４と洗剤ケース１５とが設けられている。給水弁１４は、制御部２２によって開閉駆動され、給水と停止とを行う。洗剤ケース１５は、矢印Ａで示されるように、洗剤投入部１５ａを、洗剤ケース１５から手前側へ、引き出し可能に構成されている。これにより、使用者は、洗剤ケース１５内への洗剤の投入が容易に行える。 A water supply port 13 for supplying washing water is provided on the upper rear surface of the housing 2. The water supply port 13 is connected to a tap faucet 13a. The washing water is tap water supplied from the water supply port 13. A water supply valve 14 and a detergent case 15 are provided on the downstream side of the water supply port 13. The water supply valve 14 is driven to open and close by the control unit 22 to perform water supply and stop. As indicated by an arrow A, the detergent case 15 is configured to be able to pull out the detergent charging portion 15a from the detergent case 15 to the near side. Thereby, the user can easily put the detergent into the detergent case 15.
　給水口１３から供給された洗濯水は、矢印Ｂで示されるように、洗剤ケース１５に流入する。洗濯水は、さらに、洗剤ケース１５内に投入されている洗剤を溶かしながら、外槽１へ流入する。 The washing water supplied from the water supply port 13 flows into the detergent case 15 as indicated by an arrow B. The washing water further flows into the outer tub 1 while dissolving the detergent put in the detergent case 15.
　外槽１の底部には、洗濯水を排出する排水口１６が設けられている。排水口１６には、排水路１７が連結されている。排水路１７には、排水弁１８が設けられている。排水弁１８は、制御部２２によって開閉駆動され、外槽１内に洗濯水を、溜めたり排水したりする。 A drain port 16 for discharging washing water is provided at the bottom of the outer tub 1. A drainage channel 17 is connected to the drainage port 16. A drain valve 18 is provided in the drain channel 17. The drain valve 18 is opened and closed by the control unit 22, and stores or drains the washing water in the outer tub 1.
　送水路１９は、一端が排水路１７に接続され、他端は外槽１の前面下部に接続されて、循環経路を形成している。送水路１９には、外槽１の洗濯水を循環させるポンプ２０と遠心分離部２１とが、接続されている。遠心分離部２１は、ポンプ２０の下流側に設けられている。外槽１内の洗濯水は、ポンプ２０によって、排水路１７から送水路１９を通して、矢印Ｃのように循環し、遠心分離部２１を通過する。 The water supply channel 19 has one end connected to the drainage channel 17 and the other end connected to the lower front portion of the outer tub 1 to form a circulation path. A pump 20 that circulates wash water in the outer tub 1 and a centrifugal separator 21 are connected to the water supply channel 19. The centrifugal separator 21 is provided on the downstream side of the pump 20. The washing water in the outer tub 1 is circulated by the pump 20 from the drainage channel 17 through the water supply channel 19 as shown by the arrow C and passes through the centrifugal separator 21.
　送水路１９を流れる洗濯水は、例えば、約２～３ｍ／ｓの流速で、流れるように構成されている。この流速は、ポンプ２０の能力によって設定される。 The washing water flowing through the water supply channel 19 is configured to flow at a flow velocity of about 2 to 3 m / s, for example. This flow rate is set by the capacity of the pump 20.
　洗濯水が遠心分離部２１を通過する際に、洗濯水に含まれる異物が分離される。異物には、洗濯物から遊離した汚れ、糸屑、および、洗濯水に溶解した洗剤に含まれる水軟化剤等が、含まれる。 When the washing water passes through the centrifugal separator 21, foreign matters contained in the washing water are separated. The foreign matter includes dirt and yarn released from the laundry, and a water softener contained in a detergent dissolved in the washing water.
　図２は、本実施の形態における洗濯機の遠心分離部の拡大図である。図３は、本実施の形態における洗濯機の遠心分離部のＤ１とＤ２の関係図である。図４は、図３におけるＥ－Ｅ断面図である。 FIG. 2 is an enlarged view of the centrifugal separator of the washing machine in the present embodiment. FIG. 3 is a relationship diagram between D1 and D2 of the centrifugal separator of the washing machine in the present embodiment. 4 is a cross-sectional view taken along line EE in FIG.
　図２、図３、図４において、遠心分離部２１は、送水路１９に設けられ、洗濯水が通過するケース２１ａと、ケース２１ａ内に回転可能に設けられた中空の回転筒２１ｂと、回転筒２１ｂを回転させる駆動部である回転筒モータ２１ｃと、を有する。回転筒２１ｂには、ポンプ２０により循環する洗濯水が、回転筒２１ｂの内部を貫流するように、洗濯水入口２１ｅおよび洗濯水出口２１ｆが、設けられている。回転筒モータ２１ｃは、ポンプ２０により送水路１９を洗濯水が循環するのに合わせて、回転筒２１ｂを回転させる。回転筒モータ２１ｃは、回転筒２１ｂを、例えば、約４０００ｒ／ｍｉｎで、高速回転するように設定されている。回転筒２１ｂが回転することにより、回転筒２１ｂ内に導入された洗濯水が、回転筒２１ｂ内で旋回し、高速の旋回流が発生する。 2, 3, and 4, the centrifugal separator 21 is provided in the water supply channel 19, and a case 21 a through which washing water passes, a hollow rotating cylinder 21 b that is rotatably provided in the case 21 a, A rotating cylinder motor 21c which is a driving unit for rotating the cylinder 21b. The rotating cylinder 21b is provided with a washing water inlet 21e and a washing water outlet 21f so that the washing water circulated by the pump 20 flows through the inside of the rotating cylinder 21b. The rotary cylinder motor 21c rotates the rotary cylinder 21b as the washing water circulates through the water supply passage 19 by the pump 20. The rotary cylinder motor 21c is set to rotate the rotary cylinder 21b at a high speed, for example, at about 4000 r / min. As the rotating cylinder 21b rotates, the washing water introduced into the rotating cylinder 21b rotates in the rotating cylinder 21b, and a high-speed swirling flow is generated.
　遠心分離部２１に導入された洗濯水は、洗濯水入口２１ｅから回転筒２１ｂ内に流入して、洗濯水出口２１ｆから流出する間に、回転筒２１ｂの回転により、旋回して遠心分離力を受ける。このようにして、洗濯水に含まれる汚れ物質などの異物を、遠心力により、回転筒２１ｂの内周面２１ｄに向かわせるように、構成されている。本実施の形態においては、洗濯水入口２１ｅは、洗濯水出口２１ｆの下方に設けられ、遠心分離部２１を通過する洗濯水は、下から上に向けて流れる。 The washing water introduced into the centrifugal separator 21 flows into the rotating cylinder 21b from the washing water inlet 21e, and swirls by the rotation of the rotating cylinder 21b while flowing out of the washing water outlet 21f, thereby generating centrifugal force. receive. In this manner, foreign substances such as dirt substances contained in the washing water are configured to be directed toward the inner peripheral surface 21d of the rotating cylinder 21b by centrifugal force. In the present embodiment, the washing water inlet 21e is provided below the washing water outlet 21f, and the washing water passing through the centrifugal separator 21 flows from the bottom to the top.
　また、回転筒２１ｂの下側端面の中央部に設けられた洗濯水入口２１ｅは、回転軸２１ｇの外側に、スリット状の孔を複数（例えば、４個）設けて、形成されている。回転筒２１ｂの上側端面の中央部に設けられた洗濯水出口２１ｆは、送水路１９の開口に合わせて、設けられている。送水路１９、洗濯水入口２１ｅおよび洗濯水出口２１ｆの開口面積は、ほぼ同等となるように、形成されている。そして、それぞれの開口が、中心を合わせて直線的に連通するように構成されている。 Further, the washing water inlet 21e provided at the central portion of the lower end surface of the rotating cylinder 21b is formed by providing a plurality (for example, four) of slit-like holes outside the rotating shaft 21g. A washing water outlet 21 f provided at the center of the upper end surface of the rotating cylinder 21 b is provided in accordance with the opening of the water supply passage 19. The opening areas of the water supply passage 19, the washing water inlet 21e, and the washing water outlet 21f are formed to be substantially equal. Each opening is configured to communicate linearly with the center aligned.
　回転筒２１ｂの回転軸２１ｇを中心とした直径Ｄ１は、洗濯水入口２１ｅおよび洗濯水出口２１ｆの最大径Ｄ２より大きく、構成されている。回転する回転筒２１ｂの洗濯水に作用する遠心力は、中心から外側の内周面２１ｄに向かうほど、大きくなる。したがって、回転筒２１ｂを通過する洗濯水から遠心力によって分離された異物が、内周面２１ｄに近づくほど、異物は、より強い遠心力で、内周面２１ｄに保持される。これにより、遠心力によって分離された異物が、回転筒２１ｂを通過する洗濯水の流れに引き込まれて、再度浮遊することが少なくなり、洗濯物５に汚れが再付着する等の不具合を防ぐことができる。よって、洗浄力を向上させることができる。 The diameter D1 around the rotating shaft 21g of the rotating cylinder 21b is larger than the maximum diameter D2 of the washing water inlet 21e and the washing water outlet 21f. The centrifugal force acting on the washing water of the rotating rotating cylinder 21b increases as it goes from the center toward the outer peripheral surface 21d. Therefore, as the foreign matter separated by the centrifugal force from the washing water passing through the rotary cylinder 21b approaches the inner peripheral surface 21d, the foreign matter is held on the inner peripheral surface 21d with a stronger centrifugal force. As a result, the foreign matter separated by the centrifugal force is drawn into the flow of the washing water passing through the rotating cylinder 21b, and is less likely to float again, thereby preventing problems such as reattachment of dirt to the laundry 5. Can do. Therefore, the cleaning power can be improved.
　なお、回転筒２１ｂの外面とケース２１ａの内面との隙間は、回転筒２１ｂの回転に支障が生じない範囲で、洗濯水の流通が少なくなるように、できるだけ狭く構成される。 Note that the gap between the outer surface of the rotating cylinder 21b and the inner surface of the case 21a is made as narrow as possible so that the circulation of the washing water is reduced as long as the rotation of the rotating cylinder 21b is not hindered.
　制御部２２は、筐体２内の下部に設けられている。 The control unit 22 is provided in the lower part of the housing 2.
　図５は、本実施の形態における洗濯機のブロック構成図である。図５において、制御部２２には、洗濯槽４に投入された洗濯物５の量を検知する布量検知部２３の出力と、外槽１内に給水された洗濯水の量を検知する水量検知部２４の出力と、洗濯槽４の回転駆動を検知する回転検知部２５等の出力とが、入力される。制御部２２は、操作表示部２６により使用者が設定した洗濯コースに基づいて、モータ１０、給水弁１４、排水弁１８、ポンプ２０、および、回転筒モータ２１ｃ等の駆動を制御し、洗濯運転を実行する。洗濯運転には、洗い、すすぎ、および、脱水等の各工程が含まれる。 FIG. 5 is a block configuration diagram of the washing machine according to the present embodiment. In FIG. 5, the control unit 22 includes an output of the cloth amount detection unit 23 that detects the amount of the laundry 5 put into the washing tub 4 and a water amount that detects the amount of washing water supplied into the outer tub 1. The output of the detection unit 24 and the output of the rotation detection unit 25 that detects the rotational driving of the washing tub 4 are input. The control unit 22 controls the driving of the motor 10, the water supply valve 14, the drain valve 18, the pump 20, the rotary cylinder motor 21c, and the like based on the washing course set by the user through the operation display unit 26, and the washing operation. Execute. The washing operation includes steps such as washing, rinsing, and dehydration.
　以上のように構成された洗濯機について、以下その動作、作用を説明する。洗濯運転において、洗い工程は、洗剤が溶解した洗濯水が、外槽１内に給水され、洗濯槽４の回転によって叩き洗いを行いながら、洗濯物５の汚れが落とされる工程である。洗い工程に続いて、すすぎ工程が行われ、例えば、中間脱水１（１回目の中間脱水）、すすぎ１（１回目のすすぎ）、中間脱水２（２回目の中間脱水）、および、すすぎ２（２回目のすすぎ）、の順に、各工程が行われる。そして、最後に脱水工程が実行される。 About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. In the washing operation, the washing process is a process in which the washing water in which the detergent is dissolved is supplied into the outer tub 1 and the laundry 5 is cleaned while being washed by the rotation of the washing tub 4. Following the washing step, a rinsing step is performed, for example, intermediate dehydration 1 (first intermediate dehydration), rinse 1 (first rinse), intermediate dehydration 2 (second intermediate dehydration), and rinse 2 ( Each step is performed in the order of the second rinse). And finally, a dehydration process is performed.
　まず、使用者が、筐体２の前面に設けられた扉１１を開いて、開口部６から洗濯槽４に洗濯物５を投入する。次に、筐体２の前面上部に設けられている操作表示部２６（図５参照）の電源スイッチ（図示せず）を入れ、スタートスイッチ（図示せず）を操作して、洗濯運転を開始する。 First, the user opens the door 11 provided on the front surface of the housing 2 and puts the laundry 5 into the washing tub 4 through the opening 6. Next, the power switch (not shown) of the operation display unit 26 (see FIG. 5) provided on the front upper portion of the housing 2 is turned on, and the start switch (not shown) is operated to start the washing operation. To do.
　洗濯運転の開始により、制御部２２は、最初に、洗濯槽４内に投入された洗濯物５の量を、布量検知部２３によって検知する。洗濯物５の量は、洗濯槽４を低速で回転させたときに、モータ１０にかかるトルク量、または、モータ１０の電流値等から、検知される。 When the washing operation starts, the control unit 22 first detects the amount of the laundry 5 put into the washing tub 4 by the cloth amount detection unit 23. The amount of the laundry 5 is detected from the amount of torque applied to the motor 10 or the current value of the motor 10 when the washing tub 4 is rotated at a low speed.
　制御部２２は、検知した洗濯物５の量に応じて、洗い、すすぎ、脱水の各工程の時間、および、洗濯水の量を設定する。併せて、洗濯物５の量に応じて、予め設定された洗剤量を、操作表示部２６に表示する。使用者は、洗剤ケース１５から洗剤投入部１５ａを引き出し、操作表示部２６に表示された洗剤量の目安にしたがって、洗剤を投入した後、洗剤投入部１５ａを、洗剤ケース１５内へ移動させる。 The control unit 22 sets the time of each step of washing, rinsing, and dewatering, and the amount of washing water according to the detected amount of the laundry 5. In addition, a predetermined amount of detergent is displayed on the operation display unit 26 according to the amount of the laundry 5. The user pulls out the detergent insertion part 15 a from the detergent case 15, puts the detergent in accordance with the standard amount of detergent displayed on the operation display unit 26, and then moves the detergent insertion part 15 a into the detergent case 15.
　制御部２２は、洗剤の投入が完了した頃を見計らって、給水弁１４を開く。給水弁１４が開かれると、洗濯水が給水口１３から洗剤ケース１５に流入し、矢印Ｂ（図１参照）に示されるように、投入されている洗剤を溶かしながら、外槽１へ給水される。外槽１内の底部に溜まった洗濯水は、小孔９から洗濯槽４内に流入する。外槽１内に溜まった洗濯水は、水量検知部２４で検知される。制御部２２は、洗濯物５の量に応じて、予め設定された所定量の洗濯水が給水されると、給水弁１４を閉じる。 The control unit 22 opens the water supply valve 14 in anticipation of the completion of the introduction of the detergent. When the water supply valve 14 is opened, the washing water flows into the detergent case 15 from the water supply port 13 and is supplied to the outer tub 1 while dissolving the supplied detergent as indicated by an arrow B (see FIG. 1). The The washing water collected at the bottom in the outer tub 1 flows into the washing tub 4 through the small holes 9. Washing water collected in the outer tub 1 is detected by the water amount detection unit 24. The controller 22 closes the water supply valve 14 when a predetermined amount of washing water set in advance is supplied according to the amount of the laundry 5.
　制御部２２は、給水が完了すると、モータ１０を駆動して、洗濯槽４を回転させる。洗濯槽４が回転すると、洗濯槽４内の洗濯物５は、バッフル８によって、回転方向へ持ち上げられて上方から落下し、洗濯槽４の底面または洗濯槽４の底に溜まっている洗濯物５に、叩きつけられる。このようにして、洗剤による化学力と併せて、その機械力によって、叩き洗いが行われる。洗濯物５が叩き洗いされる洗濯槽４の回転数は、例えば、４５ｒ／ｍｉｎで、所定時間毎に反転し、モータ１０は正逆回転駆動される。 When the water supply is completed, the control unit 22 drives the motor 10 to rotate the washing tub 4. When the washing tub 4 rotates, the laundry 5 in the washing tub 4 is lifted in the rotation direction by the baffle 8 and falls from above, and the laundry 5 accumulated on the bottom surface of the washing tub 4 or the bottom of the washing tub 4. It is beaten up. In this way, tapping is performed by the mechanical force together with the chemical force of the detergent. The number of rotations of the washing tub 4 in which the laundry 5 is beaten and washed is 45 r / min, for example, and is reversed every predetermined time, and the motor 10 is driven to rotate forward and backward.
　洗い工程において、ポンプ２０が駆動されると、外槽１内の洗濯水は、送水路１９を通って遠心分離部２１に到達し、遠心分離部２１を通過した洗濯水は、外槽１内に戻って循環する。 In the washing step, when the pump 20 is driven, the wash water in the outer tub 1 reaches the centrifugal separator 21 through the water supply channel 19, and the wash water that has passed through the centrifugal separator 21 passes through the outer tub 1. Cycle back to.
　洗濯水が、洗濯水入口２１ｅから導入されて、回転筒２１ｂを貫流して、洗濯水出口２１ｆから流出する際に、洗濯水に含まれる洗濯水よりも比重が重い異物（例えば、洗濯物５から遊離した汚れ等）が、回転筒２１ｂの高速回転による遠心力によって、回転筒２１ｂの内周面２１ｄに向かい、洗濯物５から遠心分離される。 When the washing water is introduced from the washing water inlet 21e, flows through the rotary cylinder 21b, and flows out from the washing water outlet 21f, a foreign matter having a higher specific gravity than the washing water contained in the washing water (for example, the laundry 5 , Etc. are separated from the laundry 5 toward the inner peripheral surface 21d of the rotating cylinder 21b by the centrifugal force caused by the high-speed rotation of the rotating cylinder 21b.
　洗い工程の開始時に、洗濯水に空気が混在していると、洗濯水の密度に偏りが生じ、遠心分離部２１内で、高速回転する回転筒２１ｂにアンバランスが発生する。そこで、このアンバランスの発生を防止するため、回転筒２１ｂが定常回転する前に、回転筒２１ｂ内に流入した洗濯水に含まれる空気を回転筒２１ｂ内から排出する、脱気運転が行われる。 If air is mixed in the washing water at the start of the washing process, the density of the washing water is biased, and an unbalance occurs in the rotating cylinder 21b that rotates at a high speed in the centrifugal separator 21. Therefore, in order to prevent the occurrence of this imbalance, a deaeration operation is performed in which the air contained in the wash water that has flowed into the rotating cylinder 21b is discharged from the rotating cylinder 21b before the rotating cylinder 21b rotates regularly. .
　図６は、本実施の形態における洗濯機の動作を示すタイムチャートである。図６に示すように、遠心分離時の回転筒２１ｂの定常回転数ｎ１は、例えば、約４０００ｒｐｍである。そして、ポンプ２０の駆動で洗濯水の循環が始まると、回転筒モータ２１ｃにより回転筒２１ｂの回転数は徐々に上昇し、所定時間Ｔ１（例えば、１分）後に、定常回転数ｎ１に到達する。このようなシーケンスにより、脱気運転が行われる。 FIG. 6 is a time chart showing the operation of the washing machine in the present embodiment. As shown in FIG. 6, the steady rotation speed n1 of the rotating cylinder 21b at the time of centrifugation is, for example, about 4000 rpm. When the circulation of the washing water is started by driving the pump 20, the rotational speed of the rotary cylinder 21b is gradually increased by the rotary cylinder motor 21c, and reaches the steady rotational speed n1 after a predetermined time T1 (for example, 1 minute). . The deaeration operation is performed by such a sequence.
　これにより、密度差と遠心力によって、洗濯水より軽い空気は、回転筒２１ｂの回転中心へ徐々に移動する。よって、回転中心に集まった空気の塊が巨大化して、洗濯水出口２１ｆに引っかかって、空気の流出が妨げられることなく、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから円滑に空気を流出させることができる。 Thereby, due to the density difference and the centrifugal force, the air lighter than the washing water gradually moves to the rotation center of the rotating cylinder 21b. Therefore, the lump of air gathered at the center of rotation becomes enormous and is caught by the washing water outlet 21f, so that the outflow of air is not hindered by the circulation flow of the washing water passing through the rotation cylinder 21b. Air can be allowed to flow out.
　したがって、回転筒２１ｂの高速定常回転前に、洗濯水に含まれる空気を、回転筒２１ｂ内から排出することができる。そして、回転筒２１ｂ内に存在する流体は、洗濯水のみとなって、回転筒２１ｂ内の流体密度を、均一にすることができる。 Therefore, the air contained in the washing water can be discharged from the rotary cylinder 21b before the high-speed steady rotation of the rotary cylinder 21b. And the fluid which exists in the rotation cylinder 21b becomes only washing water, and can make the fluid density in the rotation cylinder 21b uniform.
　脱気運転後の回転筒２１ｂの定常回転による遠心分離動作により、回転筒２１ｂの洗濯水入口２１ｅおよび洗濯水出口２１ｆが、回転筒２１ｂを通過する貫流で占められている。さらに、遠心力で貫流部分よりも内周面２１ｄに向かう力が、常時かかっていることによって、貫流成分と流体同士が混じり合うことがない。よって、一旦遠心分離して回転筒２１ｂの内側に向かった異物が、流体の混じり合いによって、貫流に戻ることがない。 The washing water inlet 21e and the washing water outlet 21f of the rotating cylinder 21b are occupied by the flow through the rotating cylinder 21b by the centrifugal separation operation by the steady rotation of the rotating cylinder 21b after the deaeration operation. Furthermore, since the force directed toward the inner peripheral surface 21d rather than the flow-through portion is always applied by centrifugal force, the flow-through component and the fluid do not mix with each other. Therefore, the foreign matter once centrifuged and directed toward the inside of the rotating cylinder 21b does not return to the flow-through due to the mixing of fluids.
　したがって、遠心分離部２１では、遠心分離中に、異物が回転筒２１ｂの内周面２１ｄに保持されるため、一旦遠心力によって分離された異物が、回転筒２１ｂを貫流する洗濯水に再び戻って、洗濯物５に異物が再汚染する等の不具合が防止され、洗浄力が向上する。 Therefore, in the centrifugal separator 21, since the foreign matter is held on the inner peripheral surface 21d of the rotating cylinder 21b during the centrifugal separation, the foreign matter once separated by the centrifugal force returns again to the washing water flowing through the rotating cylinder 21b. Thus, problems such as recontamination of foreign matter in the laundry 5 are prevented, and the cleaning power is improved.
　これにより、洗濯水に含まれる汚れのうち、水よりも比重が重いもの（例えば、砂、髪の毛、角質汚れなど）、および、水よりも軽くても（皮脂に代表される脂分など）、水よりも比重が重いもの（糸屑など）に付着して分離されるものが、洗濯水から除去される。 As a result, among dirt contained in washing water, those having a specific gravity heavier than water (for example, sand, hair, keratinous dirt, etc.) and lighter than water (such as fats represented by sebum), What is attached to and separated from things having a higher specific gravity than water (such as lint) is removed from the washing water.
　異物が取り除かれた洗濯水は、送水路１９を通って外槽１に流入し、遠心分離部２１と外槽１との間を循環して、浄化が進行する。内周面２１ｄに集められた異物は、排水時に、送水路１９を送水時とは逆方向に流れる洗濯水の流れに乗って、排水弁１８を介して、機外へ排出される。 The washing water from which the foreign matters have been removed flows into the outer tub 1 through the water supply channel 19 and circulates between the centrifugal separator 21 and the outer tub 1 to proceed with purification. The foreign matter collected on the inner peripheral surface 21d rides on the flow of washing water flowing in the direction opposite to the direction of water supply during the drainage, and is discharged to the outside through the drain valve 18.
　回転筒２１ｂが定常回転数ｎ１で所定時間Ｔ２（例えば、９分）回転して、遠心分離が行われ、叩き洗いによる洗い工程が終わる。制御部２２は、洗い工程を所定時間行うと、排水弁１８を開いて、外槽１内の洗濯水を、機外へ排水する。排水が完了した後、すすぎ工程となり、中間脱水１に続いて、すすぎ１が行われる。すすぎ工程においても、洗い工程と同様に、外槽１内に所定量の洗濯水が給水され、洗濯槽４を回転させて、洗濯物５のすすぎを行う。 The rotating cylinder 21b rotates at a steady rotation speed n1 for a predetermined time T2 (for example, 9 minutes), centrifugal separation is performed, and the washing process by tapping is completed. When the washing process is performed for a predetermined time, the control unit 22 opens the drain valve 18 and drains the washing water in the outer tub 1 to the outside of the machine. After the drainage is completed, the rinsing process is performed, and the intermediate dehydration 1 is followed by the rinse 1. Also in the rinsing process, as in the washing process, a predetermined amount of washing water is supplied into the outer tub 1, and the laundry tub 4 is rotated to rinse the laundry 5.
　最後に行われる脱水工程では、排水弁１８が開かれて、外槽１内の洗濯水が機外へ排出された後、モータ１０により洗濯物５の入った洗濯槽４が、高速に回転され、洗濯物が脱水される。脱水工程が完了すると、制御部２２は、洗濯運転を終了する。 In the last dehydration step, the drain valve 18 is opened and the washing water in the outer tub 1 is discharged outside the machine, and then the washing tub 4 containing the laundry 5 is rotated at high speed by the motor 10. The laundry is dehydrated. When the dehydration process is completed, the control unit 22 ends the washing operation.
　なお、洗濯水に含まれる異物の分離は、洗い工程のほか、すすぎ工程で実行することができる。すすぎ工程で洗濯物から洗濯水に出た異物を、遠心分離部２１で分離することにより、すすぎ効果を高めることができる。すすぎ時は、洗剤に含まれる洗浄助剤のうち、比重が水より重いゼオライトを除去することも可能であり、すすぎ性能が向上する。 It should be noted that the separation of the foreign matters contained in the washing water can be performed in the rinsing process as well as the washing process. By separating the foreign matter that has come out of the laundry into the washing water in the rinsing step by the centrifugal separator 21, the rinsing effect can be enhanced. At the time of rinsing, it is possible to remove zeolite having a specific gravity heavier than water among the cleaning aids contained in the detergent, and the rinsing performance is improved.
　以上のように、本実施の形態の洗濯機は、筐体２内に弾性支持された外槽１と、外槽１内に回転可能に設けられた洗濯槽４と、洗濯槽４を回転駆動するモータ１０と、外槽１内の洗濯水に含まれる異物を分離する遠心分離部２１と、外槽１と遠心分離部２１との間で洗濯水を循環させるポンプ２０と、外槽１とポンプ２０と遠心分離部２１とをつなぐ洗濯水が流れる送水路１９と、少なくとも洗い工程を含む洗濯運転を制御する制御部２２と、を備える。そして、遠心分離部２１は、送水路１９を流れる洗濯水が通過するケース２１ａと、ケース２１ａ内に回転可能に設けられた中空の回転筒２１ｂと、回転筒２１ｂを回転駆動する駆動部（回転筒モータ２１ｃ）と、回転筒２１ｂに洗濯水を流入させる洗濯水入口２１ｅと、回転筒２１ｂから洗濯水を流出させる洗濯水出口２１ｆと、を有する。また、制御部２２は、洗い工程の開始時に、回転筒２１ｂが定常回転する前に、回転筒２１ｂ内に流入した洗濯水に含まれる空気を、回転筒２１ｂ内から排出する脱気運転を実行するように、構成される。 As described above, the washing machine of the present embodiment includes the outer tub 1 elastically supported in the housing 2, the washing tub 4 rotatably provided in the outer tub 1, and the laundry tub 4 being driven to rotate. Motor 10, a centrifugal separator 21 that separates foreign substances contained in the washing water in the outer tub 1, a pump 20 that circulates the washing water between the outer tub 1 and the centrifugal separator 21, and the outer tub 1 The water supply path 19 in which the wash water which connects the pump 20 and the centrifuge part 21 flows, and the control part 22 which controls the washing operation including at least a washing process are provided. The centrifugal separator 21 includes a case 21a through which the washing water flowing through the water supply channel 19 passes, a hollow rotating cylinder 21b that is rotatably provided in the case 21a, and a drive unit that rotates the rotating cylinder 21b (rotation). A cylinder motor 21c), a washing water inlet 21e for allowing the washing water to flow into the rotating cylinder 21b, and a washing water outlet 21f for allowing the washing water to flow out of the rotating cylinder 21b. Moreover, the control part 22 performs the deaeration operation which discharges the air contained in the wash water which flowed into the rotary cylinder 21b from the rotary cylinder 21b before the rotary cylinder 21b rotates regularly at the start of the washing process. Configured to do so.
　この構成により、回転筒２１ｂを通過する洗濯水に含まれる汚れ等の異物を、遠心分離し、回転筒２１ｂの高速定常回転前に、洗濯水に含まれる空気を、回転筒２１ｂ内から排出する。これにより、回転筒２１ｂの高速定常回転時における回転筒２１ｂ内の流体は、洗濯水のみとなり、回転筒２１ｂ内の流体密度を、均一にすることができる。したがって、回転筒２１ｂの高速定常回転にともなって、回転運動を始める回転筒２１ｂ内の流体は、洗濯水と空気とが混在することに起因する密度の片寄りによるアンバランスを、発生させることなく、静粛かつ安定的に、遠心分離を行うことができる。 With this configuration, foreign matters such as dirt contained in the washing water passing through the rotating cylinder 21b are centrifuged, and the air contained in the washing water is discharged from the rotating cylinder 21b before the high-speed steady rotation of the rotating cylinder 21b. . Thereby, the fluid in the rotating cylinder 21b at the time of the high-speed steady rotation of the rotating cylinder 21b becomes only washing water, and the fluid density in the rotating cylinder 21b can be made uniform. Therefore, the fluid in the rotating cylinder 21b that starts the rotational movement with the high-speed steady rotation of the rotating cylinder 21b does not generate an imbalance due to the density deviation caused by the mixture of washing water and air. Centrifugation can be performed quietly and stably.
　また、洗濯水出口２１ｆは、回転筒２１ｂの回転中心近傍で、かつ、洗濯水入口２１ｅの上方に形成される。そして、制御部２２が、脱気運転において、回転筒２１ｂを定常回転より低速で回転させ、洗濯水出口２１ｆから洗濯水を流出させるように構成される。密度差によって洗濯水より軽い空気は、洗濯水出口２１ｆに近い回転筒２１ｂの上方に集まり、また、回転筒２１ｂを回転させると、遠心力によって洗濯水よりも軽い空気は、回転中心に集まる。よって、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから空気を効果的に流出させることができる。 Further, the washing water outlet 21f is formed in the vicinity of the rotation center of the rotating cylinder 21b and above the washing water inlet 21e. In the deaeration operation, the control unit 22 is configured to rotate the rotating cylinder 21b at a lower speed than the steady rotation so that the washing water flows out from the washing water outlet 21f. Air that is lighter than the washing water due to the density difference gathers above the rotating cylinder 21b near the washing water outlet 21f. When the rotating cylinder 21b is rotated, air that is lighter than the washing water gathers at the center of rotation due to centrifugal force. Therefore, air can be effectively discharged from the rotating cylinder 21b by the circulation flow of the washing water passing through the rotating cylinder 21b.
　また、制御部２２は、脱気運転において、回転筒２１ｂの回転数を漸増し、定常回転に移行するように構成される。そして、密度差と遠心力とによって、洗濯水より軽い空気は、回転筒２１ｂの回転中心へ徐々に移動する。よって、回転中心に集まった空気の塊が巨大化して、洗濯水出口２１ｆに引っかかって空気の流出が妨げられることなく、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから円滑に空気を流出させることができる。 In addition, the controller 22 is configured to gradually increase the rotational speed of the rotary cylinder 21b and shift to steady rotation in the deaeration operation. Then, the air lighter than the washing water gradually moves to the rotation center of the rotating cylinder 21b due to the density difference and the centrifugal force. Therefore, the lump of air gathered at the center of rotation becomes enormous and is smoothly caught from the rotating cylinder 21b by the circulating flow of the washing water passing through the rotating cylinder 21b without being caught by the washing water outlet 21f and hindering the outflow of air. Air can flow out.
　また、次のような作用効果も奏する。一般的な液体サイクロンでは、浄化する水の一部を遠心分離中に捨てる必要がある。しかし、本実施の形態の洗濯機では、その必要がないため、洗剤を含む洗濯水が洗濯運転中に捨てられることがなく、洗濯水を補充することがない。よって、洗剤濃度の低下をなくして、使用水量が増加することなく、洗濯水を浄化しながら洗濯することが可能となる。さらに、液体サイクロンでは、浄化能力は、流入速度に依存する。しかし、本実施の形態の洗濯機では、流入速度に依存することなく、遠心力によって除去能力を高めることができるので、大型のポンプを必要としない。 Also, there are the following effects. In a typical hydrocyclone, some of the water to be purified needs to be discarded during centrifugation. However, in the washing machine according to the present embodiment, since this is not necessary, the washing water containing the detergent is not discarded during the washing operation, and the washing water is not replenished. Therefore, it is possible to wash while purifying the washing water without reducing the detergent concentration and increasing the amount of water used. Furthermore, in a hydrocyclone, the purification capacity depends on the inflow rate. However, in the washing machine of the present embodiment, the removal capability can be increased by centrifugal force without depending on the inflow speed, so that a large pump is not required.
　（実施の形態２）
　本実施の形態の特徴は、回転筒２１ｂが定常回転する前に、回転筒２１ｂを定常回転より低速で駆動することにより、脱気運転が行われることである。他の構成は、実施の形態１と同じであり、同一の構成に同一の符号を付して、詳細な説明は、実施の形態１のものを援用する。 (Embodiment 2)
The feature of the present embodiment is that the deaeration operation is performed by driving the rotating cylinder 21b at a lower speed than the steady rotation before the rotating cylinder 21b rotates normally. Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
　図７は、本開示の第２の実施の形態における洗濯機の動作を示すタイムチャートである。図７において、ポンプ２０の駆動で洗濯水の循環が始まると、回転筒２１ｂを、定常回転数ｎ１より少ない回転数ｎ２（例えば、５００ｒ／ｍｉｎ）で回転させる。そして、所定時間Ｔ３（例えば、３０秒）後に、定常回転数ｎ１で所定時間Ｔ２だけ回転筒２１ｂが回転する。 FIG. 7 is a time chart showing the operation of the washing machine according to the second embodiment of the present disclosure. In FIG. 7, when the circulation of the washing water is started by driving the pump 20, the rotary cylinder 21b is rotated at a rotation speed n2 (for example, 500 r / min) smaller than the steady rotation speed n1. Then, after a predetermined time T3 (for example, 30 seconds), the rotating cylinder 21b rotates at the steady rotation speed n1 for the predetermined time T2.
　以上のように、本実施の形態においては、制御部２２が、脱気運転において、回転筒２１ｂを定常回転より少ない回転数で所定時間回転させるように、構成される。この構成により、密度差と遠心力とによって、洗濯水より軽い空気を、回転筒２１ｂの回転中心へ徐々に移動させて、回転筒２１ｂから流出させることができる。したがって、回転中心に集まった空気の塊が巨大化して、洗濯水出口２１ｆに引っかかって、空気の流出が妨げられることなく、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから円滑に空気を流出させることができる。 As described above, in the present embodiment, the control unit 22 is configured to rotate the rotating cylinder 21b for a predetermined time at a rotational speed smaller than the steady rotation in the deaeration operation. With this configuration, air that is lighter than the washing water can be gradually moved to the rotation center of the rotating cylinder 21b by the density difference and the centrifugal force, and can be discharged from the rotating cylinder 21b. Therefore, the lump of air gathered at the center of rotation becomes enormous and is caught by the washing water outlet 21f, so that the outflow of air is not hindered by the circulation flow of the washing water passing through the rotation cylinder 21b. Air can be allowed to flow out.
　（実施の形態３）
　本実施の形態の特徴は、回転筒２１ｂを、定常回転より少ない回転数で所定時間回転させた後、所定時間停止する、という動作を繰り返すことにより、脱気運転が行われることである。他の構成は、実施の形態１と同じであり、同一の構成に同一の符号を付して、詳細な説明は、実施の形態１のものを援用する。 (Embodiment 3)
A feature of the present embodiment is that the deaeration operation is performed by repeating the operation of rotating the rotating cylinder 21b for a predetermined time at a rotation speed less than the steady rotation and then stopping for a predetermined time. Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
　図８は、本開示の第３の実施の形態における洗濯機の動作を示すタイムチャートである。図８において、ポンプ２０の駆動で洗濯水の循環が始まると、回転筒２１ｂを、定常回転数ｎ１より少ない回転数ｎ３（例えば、１０００ｒ／ｍｉｎ）で、所定時間Ｔ４（例えば、３秒）だけ回転させ、所定時間Ｔ５（例えば、１秒）だけ停止する、という動作を、複数回（例えば、３回～５回）繰り返す。その後、所定時間Ｔ１後に、定常回転数ｎ１で、所定時間Ｔ２だけ回転筒２１ｂが回転する。 FIG. 8 is a time chart showing the operation of the washing machine according to the third embodiment of the present disclosure. In FIG. 8, when the circulation of the washing water is started by driving the pump 20, the rotating cylinder 21b is rotated at a rotational speed n3 (for example, 1000 r / min) lower than the steady rotational speed n1 for a predetermined time T4 (for example, 3 seconds). The operation of rotating and stopping for a predetermined time T5 (for example, 1 second) is repeated a plurality of times (for example, 3 to 5 times). Thereafter, after a predetermined time T1, the rotating cylinder 21b rotates at the steady rotation speed n1 for the predetermined time T2.
　以上のように、本実施の形態においては、制御部２２が、脱気運転において、回転筒２１ｂを、定常回転より少ない回転数で所定時間回転させた後、所定時間停止する、という動作を繰り返し、その後定常回転に移行するように構成される。この構成により、密度差と遠心力とによって、洗濯水よりも軽い空気は、回転筒２１ｂの回転中心へ徐々に移動する。しかし、停止動作が入ることで、回転中心へ移動する空気の量は、回転駆動を続けた場合と比較して、少なくなる。よって、回転中心に集まる空気は一度には集まらず、少しずつとなる。したがって、回転中心に集まった空気の塊が巨大化して、洗濯水出口２１ｆに引っかかって、空気の流出が妨げられることなく、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから円滑に空気を流出させることができる。 As described above, in the present embodiment, in the deaeration operation, the control unit 22 repeats the operation of rotating the rotating cylinder 21b for a predetermined time at a rotation speed less than the steady rotation and then stopping for a predetermined time. Then, it is configured to shift to steady rotation. With this configuration, air that is lighter than the washing water gradually moves to the rotation center of the rotating cylinder 21b due to the density difference and the centrifugal force. However, when the stop operation is performed, the amount of air that moves to the center of rotation is reduced as compared with the case where rotation driving is continued. Therefore, the air that collects at the center of rotation does not collect at once, but gradually. Therefore, the lump of air gathered at the center of rotation becomes enormous and is caught by the washing water outlet 21f, and the outflow of air is not hindered by the circulation flow of the washing water passing through the rotation cylinder 21b. Air can be allowed to flow out.
　（実施の形態４）
　本実施の形態の特徴は、回転筒２１ｂを、定常回転数ｎ１より少ない回転数で所定時間回転させた後、所定時間停止、または、減速しながら回転数を段階的に漸増することにより、脱気運転が行われることである。他の構成は、実施の形態１と同じであり、同一の構成に同一の符号を付して、詳細な説明は、実施の形態１のものを援用する。 (Embodiment 4)
The feature of this embodiment is that the rotating cylinder 21b is rotated at a rotational speed less than the steady rotational speed n1 for a predetermined time, and then stopped for a predetermined time or gradually increased while gradually decelerating. It is to be driven. Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
　図９は、本開示の第４の実施の形態における洗濯機の動作を示すタイムチャートである。図９において、ポンプ２０の駆動で洗濯水の循環が始まると、回転筒モータ２１ｃにより、回転筒２１ｂは定常回転数ｎ１より少ない回転数で所定時間Ｔ４（例えば、３秒）回転した後、所定時間Ｔ５（例えば、１秒）停止または減速する、という動作を、複数回（例えば、３回～５回）繰り返す。そして、上記動作を繰り返しながら、回転筒２１ｂの回転数を段階的に増加させ、所定時間Ｔ１後に定常回転数ｎ１に到達し、さらに所定時間Ｔ２だけ回転筒２１ｂが回転する。なお、図９は、所定時間減速する場合の例を示したものである。 FIG. 9 is a time chart showing the operation of the washing machine according to the fourth embodiment of the present disclosure. In FIG. 9, when the circulation of the washing water is started by driving the pump 20, the rotary cylinder 21b is rotated by the rotary cylinder motor 21c at a rotation speed less than the steady rotation speed n1 for a predetermined time T4 (for example, 3 seconds), and then predetermined. The operation of stopping or decelerating at time T5 (for example, 1 second) is repeated a plurality of times (for example, 3 to 5 times). Then, while repeating the above operation, the rotational speed of the rotating cylinder 21b is increased stepwise, reaches the steady rotational speed n1 after a predetermined time T1, and further rotates the rotating cylinder 21b for a predetermined time T2. FIG. 9 shows an example in which the vehicle is decelerated for a predetermined time.
　以上のように、本実施の形態においては、制御部２２が、脱気運転において、回転筒２１ｂを、定常回転より少ない回転数で所定時間回転させた後、所定時間停止または減速しながら回転数を段階的に漸増し、定常回転に移行するように構成される。そして、回転筒２１ｂの駆動時に気泡を回転中心に集める動作と、停止または減速時に気泡を回転中心に集める作用を停止または弱める動作と、が繰り返される。このような繰り返し動作により、回転筒２１ｂの回転中心近傍に集まる空気の塊の巨大化を防止することができ、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから円滑に空気を流出させることができる。 As described above, in the present embodiment, in the deaeration operation, the control unit 22 rotates the rotating cylinder 21b for a predetermined time at a rotation speed less than the steady rotation, and then stops or decelerates for a predetermined time. Are gradually increased and shifted to steady rotation. And the operation | movement which collects a bubble to a rotation center at the time of the rotation cylinder 21b drive, and the operation | movement which stops or weakens the effect | action which collects a bubble to a rotation center at the time of a stop or deceleration are repeated. Such repeated operation can prevent the mass of air gathering in the vicinity of the rotation center of the rotating cylinder 21b from being enlarged, and the air from the rotating cylinder 21b can be smoothly discharged by the circulating flow of washing water passing through the rotating cylinder 21b. Can be drained.
　（実施の形態５）
　本実施の形態の特徴は、ポンプ２０の通電停止後、回転筒２１ｂを所定時間回転させることである。他の構成は、実施の形態１と同じであり、同一の構成に同一の符号を付して、詳細な説明は、実施の形態１のものを援用する。 (Embodiment 5)
The feature of the present embodiment is that the rotating cylinder 21b is rotated for a predetermined time after the energization of the pump 20 is stopped. Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
　図１０は、本開示の第５の実施の形態における洗濯機の動作を示すタイムチャートである。図１０の洗い工程において、ポンプ２０の駆動により、外槽１内の洗濯水が送水路１９を流れて循環しているとき、回転筒２１ｂは、高速定常回転により、回転筒２１ｂを通過する洗濯水に遠心力を作用させる。このとき、洗濯水から遠心分離された洗濯水に含まれる汚れ等の異物は、回転筒２１ｂの内周面２１ｄに、押し付けられた状態で保持されている。 FIG. 10 is a time chart showing the operation of the washing machine according to the fifth embodiment of the present disclosure. In the washing process of FIG. 10, when the washing water in the outer tub 1 flows and circulates through the water supply channel 19 by driving the pump 20, the rotating cylinder 21 b is washed by passing through the rotating cylinder 21 b by high-speed steady rotation. Apply centrifugal force to water. At this time, foreign matters such as dirt contained in the wash water centrifuged from the wash water are held in a pressed state on the inner peripheral surface 21d of the rotary cylinder 21b.
　回転筒モータ２１ｃにより駆動する回転筒２１ｂの回転が停止すると、洗濯水に作用する遠心力がなくなり、遠心分離された汚れ等の異物は、回転筒２１ｂ内で浮遊する。一方、ポンプ２０の通電が停止されても、惰性でポンプ２０が駆動している間、洗濯水が循環し、回転筒２１ｂ内で浮遊する異物が、洗濯水の循環流によって、遠心分離部２１から流出する。 When the rotation of the rotating cylinder 21b driven by the rotating cylinder motor 21c is stopped, the centrifugal force acting on the washing water disappears, and the foreign matter such as the soiled dirt floats in the rotating cylinder 21b. On the other hand, even when the energization of the pump 20 is stopped, while the pump 20 is driven by inertia, the washing water circulates, and the foreign matter floating in the rotating cylinder 21b is caused by the circulation flow of the washing water to the centrifuge 21. Spill from.
　ポンプ２０の通電を停止した後、回転筒２１ｂを、所定時間Ｔ６（例えば、５秒～１０秒）回転させることにより、洗濯水が循環している間、回転筒２１ｂ内の洗濯水に、遠心力を作用させることができる。 After the energization of the pump 20 is stopped, the rotating cylinder 21b is rotated for a predetermined time T6 (for example, 5 to 10 seconds), so that the washing water in the rotating cylinder 21b is centrifuged while the washing water is circulating. Force can be applied.
　以上のように、本実施の形態においては、制御部２２は、ポンプ２０の通電停止後、回転筒２１ｂを所定時間回転させるように構成される。ポンプ２０の通電停止後、洗濯水の循環流がなくなるまでの間、遠心力により、回転筒２１ｂに捕捉されている汚れ等の異物を、回転筒２１ｂに保持した状態に維持することができる。したがって、遠心分離物が回転筒２１ｂ内で浮遊するのを防止することができる。 As described above, in the present embodiment, the controller 22 is configured to rotate the rotating cylinder 21b for a predetermined time after the energization of the pump 20 is stopped. After the energization of the pump 20 is stopped, the foreign matter such as dirt trapped in the rotating cylinder 21b can be maintained in the rotating cylinder 21b by centrifugal force until the washing water circulates. Therefore, it is possible to prevent the centrifuged product from floating in the rotating cylinder 21b.
　（実施の形態６）
　本実施の形態の特徴は、ポンプ２０を駆動してから所定時間後に、回転筒２１ｂを回転させることである。他の構成は、実施の形態１と同じであり、同一の構成に同一の符号を付して、詳細な説明は、実施の形態１のものを援用する。 (Embodiment 6)
A feature of the present embodiment is that the rotating cylinder 21b is rotated after a predetermined time from driving the pump 20. Other configurations are the same as those in the first embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the first embodiment.
　図１１は、本開示の第６の実施の形態における洗濯機の動作を示すタイムチャートである。図１１において、ポンプ２０の駆動により洗濯水が循環を開始する当初は、洗濯水に多量の空気が含まれる。よって、このような状態で回転筒２１ｂを定常回転数ｎ１で回転させると、密度差と遠心力とによって、洗濯水より軽い空気は、回転筒２１ｂの回転中心へ移動し、集まった空気の塊が巨大化して洗濯水出口２１ｆからの空気の流出が妨げられる。 FIG. 11 is a time chart showing the operation of the washing machine according to the sixth embodiment of the present disclosure. In FIG. 11, when the washing water starts to circulate by driving the pump 20, the washing water contains a large amount of air. Therefore, when the rotating cylinder 21b is rotated at the steady rotation speed n1 in such a state, air that is lighter than the washing water moves to the center of rotation of the rotating cylinder 21b due to the density difference and the centrifugal force. Becomes larger and the outflow of air from the washing water outlet 21f is prevented.
　そこで、ポンプ２０を駆動してから所定時間Ｔ７（例えば、５秒）後に、回転筒２１ｂを回転させる。これにより、回転筒２１ｂを回転させる前に、循環流によって、洗濯水に含まれる多量の空気が分散した状態で、回転筒２１ｂから空気を流出させることができる。送水路１９を流れる循環流の流速が、例えば、１～２ｍ／秒である場合、ポンプ２０を駆動してから回転筒２１ｂが回転するまでに、洗濯水は数回循環する。 Therefore, the rotary cylinder 21b is rotated after a predetermined time T7 (for example, 5 seconds) after the pump 20 is driven. Thereby, before rotating the rotating cylinder 21b, air can be discharged from the rotating cylinder 21b in a state where a large amount of air contained in the washing water is dispersed by the circulation flow. When the flow rate of the circulating flow through the water supply channel 19 is, for example, 1 to 2 m / sec, the washing water circulates several times from the time when the pump 20 is driven until the rotating cylinder 21b rotates.
　以上のように、本実施の形態においては、制御部２２は、ポンプ２０を駆動してから所定時間後に、回転筒２１ｂが回転するように構成される。このような構成により、回転筒２１ｂが回転する前に、循環流によって、洗濯水に含まれる多量の空気が分散した状態で、回転筒２１ｂから空気が流出する。その後、洗濯水中の減少した空気が、回転筒２１ｂの回転による遠心分離作用によって、回転筒２１ｂの回転中心へ移動するので、回転筒２１ｂを通過する洗濯水の循環流によって、回転筒２１ｂから円滑に空気を流出させることができる。 As described above, in the present embodiment, the control unit 22 is configured such that the rotary cylinder 21b rotates after a predetermined time from driving the pump 20. With such a configuration, before the rotating cylinder 21b rotates, air flows out from the rotating cylinder 21b in a state where a large amount of air contained in the washing water is dispersed by the circulation flow. Thereafter, the reduced air in the washing water is moved to the rotation center of the rotating cylinder 21b by the centrifugal separation action by the rotation of the rotating cylinder 21b, so that the washing water passing through the rotating cylinder 21b smoothly flows from the rotating cylinder 21b. Air can be allowed to flow out.
　なお、前記実施の形態は、必要に応じて、適宜組み合わせて実施することができる。 In addition, the said embodiment can be implemented in combination as appropriate as needed.
　以上のように、本開示にかかる洗濯機は、洗濯で汚れた洗濯水から汚れ物質を安定的に遠心分離して浄化することができ、洗浄効果を高めることができるので、洗濯機として有用である。 As described above, the washing machine according to the present disclosure is useful as a washing machine because it can stably centrifuge and purify dirt substances from washing water soiled by washing, and can enhance the washing effect. is there.
　１　外槽
　２　筐体
　４　洗濯槽
　１０　モータ
　１９　送水路
　２０　ポンプ
　２１　遠心分離部
　２１ａ　ケース
　２１ｂ　回転筒
　２１ｃ　回転筒モータ（駆動部）
　２１ｅ　洗濯水入口
　２１ｆ　洗濯水出口
　２２　制御部 DESCRIPTION OF SYMBOLS 1 Outer tub 2 Housing | casing 4 Washing tub 10 Motor 19 Water supply path 20 Pump 21 Centrifugal separation part 21a Case 21b Rotating cylinder 21c Rotating cylinder motor (drive part)
21e Washing water inlet 21f Washing water outlet 22 Control unit

Claims (8)

  1. 筐体内に弾性支持された外槽と、
    前記外槽内に回転可能に設けられた洗濯槽と、
    前記洗濯槽を回転駆動するモータと、
    前記外槽内の洗濯水に含まれる異物を分離する遠心分離部と、
    前記外槽と前記遠心分離部との間で前記洗濯水を循環させるポンプと、
    前記外槽と前記ポンプと前記遠心分離部とをつなぐ前記洗濯水が流れる送水路と、
    少なくとも洗い工程を含む洗濯運転を制御する制御部と、を備え、
    　前記遠心分離部は、
    前記送水路を流れる前記洗濯水が通過するケースと、
    前記ケース内に回転可能に設けられた中空の回転筒と、
    前記回転筒を回転駆動する駆動部と、
    前記回転筒に前記洗濯水を流入させる洗濯水入口と、
    前記回転筒から前記洗濯水を流出させる洗濯水出口と、を有し、
    　前記制御部は、
    前記洗い工程の開始時に、前記回転筒が定常回転する前に、前記回転筒内に流入した前記洗濯水に含まれる空気を前記回転筒内から排出する、脱気運転を実行するように構成された
    洗濯機。     An outer tank elastically supported in the housing;
    A washing tub rotatably provided in the outer tub;
    A motor for rotationally driving the washing tub;
    A centrifuge for separating foreign substances contained in the washing water in the outer tub;
    A pump for circulating the washing water between the outer tub and the centrifugal separator;
    A water passage through which the washing water connecting the outer tub, the pump, and the centrifugal separator flows;
    A control unit for controlling a washing operation including at least a washing step,
    The centrifuge is
    A case through which the washing water flowing through the water passage passes;
    A hollow rotating cylinder rotatably provided in the case;
    A drive unit for rotationally driving the rotary cylinder;
    A washing water inlet for allowing the washing water to flow into the rotating cylinder;
    A washing water outlet for allowing the washing water to flow out of the rotating cylinder,
    The controller is
    At the start of the washing step, the degassing operation is performed such that the air contained in the washing water that has flowed into the rotary cylinder is discharged from the rotary cylinder before the rotary cylinder rotates regularly. Washing machine.
  2. 前記洗濯水出口は、
    前記回転筒の回転中心近傍で、かつ、前記洗濯水入口の上方に形成され、
    前記制御部は、前記脱気運転において、
    前記回転筒を前記定常回転より低速で回転させ、前記洗濯水出口から前記洗濯水を流出させるように構成された
    請求項１記載の洗濯機。     The washing water outlet is
    Formed near the rotation center of the rotating cylinder and above the washing water inlet;
    The control unit, in the deaeration operation,
    The washing machine according to claim 1, wherein the washing cylinder is configured to rotate the rotating cylinder at a lower speed than the steady rotation so that the washing water flows out from the washing water outlet.
  3. 前記制御部は、前記脱気運転において、
    前記回転筒の回転数を漸増し、前記定常回転に移行するように構成された
    請求項１または２記載の洗濯機。     The control unit, in the deaeration operation,
    The washing machine according to claim 1 or 2, wherein the number of rotations of the rotating cylinder is gradually increased to shift to the steady rotation.
  4. 前記制御部は、前記脱気運転において、
    前記回転筒を、前記定常回転より少ない回転数で、所定時間回転させるように構成された
    請求項１または２記載の洗濯機。     The control unit, in the deaeration operation,
    The washing machine according to claim 1 or 2, wherein the rotating cylinder is configured to rotate for a predetermined time at a rotation speed less than the steady rotation.
  5. 前記制御部は、前記脱気運転において、
    前記回転筒を、前記定常回転より少ない回転数で所定時間回転させた後、所定時間停止する動作を繰り返し、前記定常回転に移行するように構成された
    請求項１または２記載の洗濯機。     The control unit, in the deaeration operation,
    The washing machine according to claim 1 or 2, wherein the rotating cylinder is configured to rotate for a predetermined time after rotating for a predetermined time at a rotation speed less than the normal rotation, and to shift to the normal rotation.
  6. 前記制御部は、前記脱気運転において、
    前記回転筒を、前記定常回転より少ない回転数で所定時間回転させた後、所定時間停止または減速しながら回転数を段階的に漸増し、前記定常回転に移行するように構成された
    請求項１または２記載の洗濯機。     The control unit, in the deaeration operation,
    The rotary cylinder is configured to rotate at a rotational speed less than the steady rotation for a predetermined time, and then gradually increase the rotational speed in a stepwise manner while stopping or decelerating for a predetermined time to shift to the steady rotation. Or the washing machine of 2.
  7. 前記制御部は、
    前記ポンプの通電停止後、前記回転筒を所定時間回転させるように構成された
    請求項１～６のうちいずれか１項に記載の洗濯機。     The controller is
    The washing machine according to any one of claims 1 to 6, wherein the rotating cylinder is configured to rotate for a predetermined time after the pump is deenergized.
  8. 前記制御部は、
    前記ポンプを駆動してから所定時間後に、前記回転筒を回転させるように構成された
    請求項１～７のうちいずれか１項に記載の洗濯機。     The controller is
    The washing machine according to any one of claims 1 to 7, wherein the washing cylinder is configured to rotate after a predetermined time from driving the pump.
PCT/JP2018/006973 2017-03-15 2018-02-26 Washing machine WO2018168417A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880017647.1A CN110431262B (en) 2017-03-15 2018-02-26 Washing machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017049891A JP6964214B2 (en) 2017-03-15 2017-03-15 Washing machine
JP2017-049891 2017-03-15

Publications (1)

Publication Number Publication Date
WO2018168417A1 true WO2018168417A1 (en) 2018-09-20

Family

ID=63522953

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/006973 WO2018168417A1 (en) 2017-03-15 2018-02-26 Washing machine

Country Status (3)

Country Link
JP (1) JP6964214B2 (en)
CN (1) CN110431262B (en)
WO (1) WO2018168417A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7478920B2 (en) * 2019-12-11 2024-05-08 パナソニックＩｐマネジメント株式会社 Washing machine and method for controlling the washing machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5511034A (en) * 1978-07-10 1980-01-25 Kogyo Kaihatsu Kenkyusho Centrifugal separator
JP2001070694A (en) * 1999-08-18 2001-03-21 Lg Electronics Inc Washing machine
JP2005152212A (en) * 2003-11-25 2005-06-16 Toshiba Corp Washing machine
JP2011177703A (en) * 2010-02-04 2011-09-15 Hitachi Koki Co Ltd Continuous centrifuge
JP2015006666A (en) * 2013-06-24 2015-01-15 エスケイエフ ルーブリケイション システムズ ジャーマニー アクチエンゲゼルシャフトＳＫＦ Ｌｕｂｒｉｃａｔｉｏｎ Ｓｙｓｔｅｍｓ Ｇｅｒｍａｎｙ ＡＧ Lubricant filter unit and lubrication system including the same
WO2017154053A1 (en) * 2016-03-10 2017-09-14 パナソニックＩｐマネジメント株式会社 Washing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4941970A (en) * 1972-04-10 1974-04-19
JP2000237633A (en) * 1999-02-19 2000-09-05 Matsushita Electric Ind Co Ltd Clarifying device using centrifugal filter, and contamination-detecting sensor using the filter
KR20040046954A (en) * 2002-11-28 2004-06-05 엘지전자 주식회사 The structure of lint filter in washer
JP5928892B2 (en) * 2012-07-30 2016-06-01 株式会社リコー Foam removing apparatus and foam removing method
CN104862926B (en) * 2014-02-26 2017-03-22 海尔集团技术研发中心 Washing machine and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5511034A (en) * 1978-07-10 1980-01-25 Kogyo Kaihatsu Kenkyusho Centrifugal separator
JP2001070694A (en) * 1999-08-18 2001-03-21 Lg Electronics Inc Washing machine
JP2005152212A (en) * 2003-11-25 2005-06-16 Toshiba Corp Washing machine
JP2011177703A (en) * 2010-02-04 2011-09-15 Hitachi Koki Co Ltd Continuous centrifuge
JP2015006666A (en) * 2013-06-24 2015-01-15 エスケイエフ ルーブリケイション システムズ ジャーマニー アクチエンゲゼルシャフトＳＫＦ Ｌｕｂｒｉｃａｔｉｏｎ Ｓｙｓｔｅｍｓ Ｇｅｒｍａｎｙ ＡＧ Lubricant filter unit and lubrication system including the same
WO2017154053A1 (en) * 2016-03-10 2017-09-14 パナソニックＩｐマネジメント株式会社 Washing machine

Also Published As

Publication number Publication date
CN110431262B (en) 2021-06-22
JP6964214B2 (en) 2021-11-10
CN110431262A (en) 2019-11-08
JP2018153214A (en) 2018-10-04

Similar Documents

Publication Publication Date Title
JP6994624B2 (en) washing machine
JP7129604B2 (en) washing machine
CN113235260B (en) washing machine
JP6917539B2 (en) washing machine
WO2020149003A1 (en) Washing machine, and method for controlling washing machine
WO2018168417A1 (en) Washing machine
JP7113234B2 (en) washing machine
WO2020209030A1 (en) Washing machine
JP7194885B2 (en) washing machine
JP7170189B2 (en) washing machine
JP6948509B2 (en) Washing machine
JP7489584B2 (en) Centrifugal separator and washing machine equipped with centrifugal separator
CN109923260B (en) Washing machine
JP6948510B2 (en) Washing machine
JP2020199148A (en) Centrifugal separator and washing machine including centrifugal separator
JP7126067B2 (en) washing machine
JP7308388B2 (en) Centrifugal separator and washing machine equipped with the centrifugal separator
JP2020199147A (en) Centrifugal separator and washing machine including centrifugal separator
WO2024018653A1 (en) Centrifugal separation device and washing machine provided with centrifugal separation device
WO2024018652A1 (en) Centrifugal separator, and washing machine provided with centrifugal separator
JP7478920B2 (en) Washing machine and method for controlling the washing machine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18768265

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18768265

Country of ref document: EP

Kind code of ref document: A1