WO2021090671A1 - Séparateur centrifuge et machine à laver comprenant un séparateur centrifuge - Google Patents

Séparateur centrifuge et machine à laver comprenant un séparateur centrifuge Download PDF

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Publication number
WO2021090671A1
WO2021090671A1 PCT/JP2020/039335 JP2020039335W WO2021090671A1 WO 2021090671 A1 WO2021090671 A1 WO 2021090671A1 JP 2020039335 W JP2020039335 W JP 2020039335W WO 2021090671 A1 WO2021090671 A1 WO 2021090671A1
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WIPO (PCT)
Prior art keywords
liquid
washing
water
water channel
swirling flow
Prior art date
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PCT/JP2020/039335
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English (en)
Japanese (ja)
Inventor
中村　一繁
倉掛　敏之
松田　眞一
池水　麦平
脇田　克也
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.)
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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 CN202080057680.4A priority Critical patent/CN114258441A/zh
Priority to JP2021554867A priority patent/JP7489584B2/ja
Publication of WO2021090671A1 publication Critical patent/WO2021090671A1/fr

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/02—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles without inserted separating walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor

Definitions

  • the present disclosure relates to a centrifuge that centrifuges foreign substances contained in a liquid flowing through a water channel, and a washing machine equipped with a centrifuge.
  • the flow of washing water flowing from the water channel 52 into the swirling flow generation unit 56 is indicated by an arrow X in FIG.
  • the washing water that has flowed into the swirl flow generation unit 56 from the water channel 52 starts swirling at the swirl flow generation unit 56.
  • the washing water that goes around the swirling flow generation unit 56 is obstructed by the flow of the washing water that flows in from the water channel 52. Therefore, the washing water that has made a round in the swirling flow generating section 56 cannot swirl along the inner peripheral surface 61 of the swirling flow generating section 56, and the flow is closer to the center 62 side of the swirling flow generating section.
  • the swirling flow of the washing water flowing in the swirling flow generating section 56 swirls around the position deviated from the center 62 of the swirling flow generating section 56 as the vortex center 63.
  • the washing water flows from the drain port 16 through the drain channel 17 through the water channel 19a and then passes through the centrifuge device 20. Then, when passing through the centrifuge device 20, foreign matter contained in the washing water is separated as described below.
  • the foreign matter includes dirt and lint released from the laundry 5, a water softening agent contained in the detergent dissolved in the washing water, and the like.
  • the centrifuge device 20 includes a case 21 that is communicated with a water channel 19, a hollow rotary cylinder 22 that is rotatably provided in the case 21, and a cylinder motor 23 that rotationally drives the rotary cylinder 22. ..
  • the inner peripheral surface 22c is centered on the rotating shaft 22d of the rotating cylinder 22, and the diameter of the inner peripheral surface 22c is larger than the maximum diameters of the liquid inlet 22a and the liquid outlet 22b. As a result, the centrifugal force increases from the rotating shaft 22d of the rotating cylinder 22 toward the inner peripheral surface 22c.
  • a swirling flow generating unit 24 is provided on the inflow side of the washing water passing through the case 21.
  • the swirl flow generating portion 24 is integrally formed with the case 21, and has a cylindrical portion 25 and a swirl portion 26.
  • the cylindrical portion 25 communicates with the liquid inlet 22a, and the center 25a of the cylindrical portion 25 is provided so as to coincide with the rotating shaft 22d of the rotating cylinder 22.
  • the spiral portion 26 is provided on the upstream side of the cylindrical portion 25 and communicates with the cylindrical portion 25 and the water channel 19a.
  • the distance G from the center 25a of the cylindrical portion 25 to the side wall 26a of the spiral portion 26 is continuous from the first connecting portion 27a so as to be the same as the radius H of the cylindrical portion 25 at the second connecting portion 27b. It is changed to be shorter.
  • the side wall 26a of the spiral portion 26 gradually approaches the side wall 25b of the cylindrical portion 25 according to the distance from the liquid inflow portion 28, which is the first connecting portion 27a, to the second connecting portion 27b. It is configured.
  • the first connecting portion 27a and the second connecting portion 27b are configured to be located opposite to each other with the center 25a of the cylindrical portion 25 interposed therebetween.
  • the pump blade 29a rotates together with the rotary cylinder 22 by being driven by the cylinder motor 23. Due to the pumping action of the pump blades 29a, the washing water in the outer tub 1 flows through the water channel 19 formed below the outer tub 1 and passes through the centrifuge device 20. As a result, the washing water circulates as shown by the arrow C in FIG.
  • the washing water flows through the water channel 19 and circulates between the centrifuge device 20 and the outer tub 1.
  • V1 be the flow velocity of the circulating flow in which the washing water passes through the centrifuge device 20
  • V2 be the flow velocity of the swirling flow in which the washing water swirls in the rotary cylinder 22.
  • the flow velocity V2 of the swirling flow is set to be higher than the flow velocity V1 of the circulating flow, that is, V2> V1.
  • the washing step is a step in which washing water in which detergent is dissolved is supplied to the outer tub 1 and the dirt on the laundry 5 is washed off while tapping and washing by the rotation of the rotary tub 4.
  • the rinsing step for example, each operation of the first intermediate dehydration operation, the first rinsing operation, the second intermediate dehydration operation, and the second rinsing operation is performed.
  • the dehydration step which is the final step of the washing operation, is executed.
  • the control unit 31 opens the water supply valve 14 at the time when the detergent has been added in the washing process. As a result, the washing water flows into the detergent case 15 from the water supply port 13, and as shown by the arrow B in FIG. 1, the washing water is supplied to the outer tub 1 while dissolving the added detergent. The washing water collected at the bottom of the outer tub 1 flows into the rotary tub 4 through the small holes 9. The amount of washing water accumulated in the outer tub 1 is detected by the water amount detecting unit 33. When the amount of washing water accumulated in the outer tub 1 reaches a predetermined amount preset according to the amount of the laundry 5, the control unit 31 closes the water supply valve 14 to stop the water supply.
  • control unit 31 discharges the washing water in the outer tub 1 through the drain valve 18 to complete the washing process having the water supply operation and the cleaning operation. After this drainage is completed, the rinsing process is started.
  • the control unit 31 performs the washing step, the rinsing step, and the dehydration step, and ends the washing operation.
  • the vibration caused by the rotation of the rotary tank 4 causes the vibration of the entire outer tank 1. This vibration is absorbed by the suspension mechanism 3 and the vibration of the housing 2 is suppressed.
  • the washing water is introduced into the rotary cylinder 22 from the liquid inlet 22a, passes through the rotary cylinder 22, and flows out from the liquid outlet 22b.
  • foreign substances sand, hair, keratin stains, etc.
  • those having a lighter specific gravity than water such as oils typified by sebum
  • those having a heavier specific gravity than water such as lint
  • the laundry-specific dirt substances contained in the washing water are centrifuged and removed from the washing water.
  • the washing water that fills the inside of the rotating cylinder 22 that is outside the circulating flow that passes near the rotating shaft 22d of the rotating cylinder 22 and is inside the inner peripheral surface 22c of the rotating cylinder 22 is the liquid inlet of the rotating cylinder 22.
  • the 22a and the liquid outlet 22b are occupied by the circulating flow.
  • a strong centrifugal force acts on the washing water in the rotary cylinder 22 toward the inner peripheral surface 22c of the rotary cylinder 22 due to a high-speed swirling flow. Therefore, the dirty substance separated from the washing water by this centrifugal force and directed toward the inner peripheral surface 22c of the rotary cylinder 22 is not drawn back into the circulating flow passing through the rotary cylinder 22. That is, the separated dirt substances are prevented from returning to the outer tub 1 together with the circulating flow and reattaching to the laundry 5, so that the cleaning effect can be enhanced.
  • the washing water swirls and passes from the bottom to the top.
  • air bubbles generated by the detergent in the washing water and air bubbles in the water channel 19 may enter the rotating cylinder 22 from the swirling flow generating unit 24.
  • the bubbles lighter than water gather at the center of the rotary cylinder 22 by the swirling flow, and further, the action of trying to rise upward and the flow of the washing water from the bottom to the top are combined.
  • the liquid is easily discharged from the liquid outlet 22b to the outside of the rotary cylinder 22.
  • the imbalance between the water and the bubble distribution in the rotary cylinder 22 caused by the bubbles lighter than water staying in the rotary cylinder 22 is suppressed, and the torque of the cylinder motor 23 required to rotate the rotary cylinder 22 fluctuates. Can be minimized. Further, the rotation speed fluctuation of the rotary cylinder 22 caused by the torque fluctuation can be suppressed. Further, since the rotational vibration of the rotary cylinder 22 generated due to the imbalance between the water and the bubble distribution can be suppressed, the rotary cylinder 22 can be made larger even inside the case 21.
  • a pump blade 29a having a pumping action is integrally provided with the rotary cylinder 22, and the control unit 31 rotates the rotary cylinder 22 between the centrifuge device 20 and the outer tank 1. Circulate the washing water at. Therefore, it is not necessary to provide a pump for circulating washing water separately from the centrifuge device 20, and the configuration can be simplified.
  • control unit 31 opens the drain valve 18 at the time of drainage, and flows the washing water in the direction opposite to the direction of the arrow C circulating in the water channel 19.
  • the foreign matter collected on the inner peripheral surface 22c of the rotary cylinder 22 rides on the flow of the washing water and is discharged to the outside of the housing 2 through the drain valve 18. As a result, it is not necessary to dispose of a part of the purified washing water during centrifugation.
  • the separation of foreign substances contained in the washing water can be performed not only in the washing process but also in the rinsing process.
  • the rinsing effect can be enhanced by separating the foreign matter from the laundry 5 into the washing water with the centrifuge device 20.
  • the centrifuge device 20 of the present embodiment is provided in the water channel 19 and centrifuges the foreign matter contained in the washing water (liquid) flowing through the water channel 19.
  • the centrifuge 20 includes a case 21 that is communicated with the water channel 19 and a hollow rotary cylinder 22 that is rotatably provided in the case 21. Further, a cylinder motor having a liquid inlet 22a for flowing washing water from the water channel 19a into the rotary cylinder 22 and a liquid outlet 22b for flowing the washing water from the inside of the rotary cylinder 22 to the water channel 19b, and driving the rotary cylinder 22 to rotate. 23 and a swirling flow generating unit 24 provided on the upstream side of the liquid inlet 22a are provided.
  • the washing water that goes around in the swirling flow generating unit 24 generates a swirling flow along the side wall 25b of the cylindrical portion 25 without being obstructed by the flow of the washing water flowing from the water channel 19a. Can be done. Therefore, the vortex center 25c of the swirling flow flowing in the swirling flow generating unit 24, the center 25a of the cylindrical portion 25, and the rotating shaft 22d of the rotating cylinder 22 can be made to coincide with each other. Therefore, the turbulence of the swirling flow generated in the swirling flow generating unit 24 is reduced, and the swirling component is imparted to the washing water. As a result, a strong centrifugal force can be applied to the foreign matter contained in the washing water in the rotary cylinder 22, and the foreign matter can be effectively separated from the washing water.
  • the distance between the side wall 26a of the spiral portion 26 and the side wall 25b of the cylindrical portion 25 is configured to be closer according to the distance from the liquid inflow portion 28. That is, the side wall 26a of the spiral portion 26 is configured to gradually approach the side wall 25b of the cylindrical portion 25 according to the distance from the liquid inflow portion 28.
  • the vortex center 25c of the swirling flow generated by the swirling flow generating unit 24 can be brought closer to the rotating shaft 22d of the rotating cylinder 22 located downstream of the swirling flow generating unit 24. Therefore, it is possible to reduce the turbulence of the swirling flow and apply a strong centrifugal force, and it is possible to effectively separate foreign matter from the washing water.
  • the first connecting portion 27a connecting the side wall 26a of the spiral portion 26 and the water channel 19a, and the side wall 26a of the spiral portion 26 and the side wall 25b of the cylindrical portion 25 are connected to each other. It has two connecting portions 27b, and the first connecting portion 27a and the second connecting portion 27b are configured to be located opposite to each other with the center 25a of the cylindrical portion 25 interposed therebetween.
  • the swirling flow is generated by the washing water flowing into the swirling flow generating section 24 flowing along the side wall 26a of the swirl section 26.
  • FIG. 6 is a cross-sectional view of a main part of the centrifuge device according to the second embodiment of the present disclosure.
  • FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG.
  • the feature of the second embodiment is that an arc wall 30 having the same radius as the side wall 25b of the cylindrical portion 25 is provided on the downstream side of the liquid inflow portion 28.
  • the other configurations are the same as those of the first embodiment, the same configurations are designated by the same reference numerals, and the detailed description of the first embodiment is incorporated.
  • the arc wall 30 is formed from the liquid inflow portion 28 toward the downstream side, and its inner side wall 30a is formed with the same radius as the side wall 25b of the cylindrical portion 25.
  • the tip of the arc wall 30 extends from the first connecting portion 27a to the position of the angle ⁇ 2.
  • the angle ⁇ 2 is, for example, 0 ° ⁇ 2 ⁇ 90 °.
  • 35 ° ⁇ ⁇ 2 ⁇ 55 °, and the angle ⁇ 2 in the present embodiment is 45 °.
  • the distance between the side wall 26a of the spiral portion 26 and the outer side wall 30b of the arc wall 30 is set to become shorter from the liquid inflow portion 28 toward the downstream side, as shown by P and Q in FIG. There is. Since the length of the flow path in the height direction is constant, the cross-sectional area of the flow path gradually narrows toward the downstream from the liquid inflow portion 28. That is, the flow velocity of the washing water is accelerated.
  • the swirling flow generating portion 24 of the present embodiment is provided with an arc wall 30 having the same radius as the side wall 25b of the cylindrical portion 25 on the downstream side of the liquid inflow portion 28.
  • the thickness of the arc wall 30 may be changed.
  • the radius of the inner side wall 30a of the arc wall 30 is provided to be the same as the radius of the side wall 25b of the cylindrical portion 25.
  • the distance between the outer side wall 30b of the arc wall 30 and the side wall 26a of the spiral portion 26 is changed from upstream to downstream so that P> Q in FIG. 7.
  • the outer side wall 30b of the arc wall 30 is changed so as to be closer to the center 25a of the cylindrical portion 25. This makes it possible to generate a high-speed swirling flow with less turbulence.
  • the centrifuge and the washing machine provided with the centrifuge have been described. That is, the washing machine is provided in a washing tub including an outer tub 1 and a washing tub 4 for accommodating the object to be washed 5 and washing water which is a liquid, a water channel 19 for circulating the washing water in the washing tub, and a water channel 19. It is provided with the centrifuge device 20 according to the first embodiment or the second embodiment for centrifuging the foreign matter contained in the washing water flowing through the water channel 19.
  • the pump unit 29 of the washing machine is provided in the centrifuge device 20, and the pump blades 29a and the rotary cylinder 22 are integrally rotated by the cylinder motor 23. It is supposed to be.
  • a pump portion (not shown) may be separately provided in the water channel 19 to generate a circulating flow as shown by an arrow C in FIG.
  • the centrifuge can be used not only in a washing machine but also in a device for separating foreign substances contained in a liquid flowing through a water channel.
  • FIG. 8 is a schematic configuration diagram of a washing machine provided with a centrifuge according to the third embodiment of the present disclosure.
  • the washing machine has an outer tub 101 and a rotary tub 104 rotatably provided in the outer tub 101 as a washing tub for accommodating an object to be washed and washing water which is a liquid. ..
  • the outer tub 101 is formed in a bottomed tubular shape, and is elastically supported by a plurality of suspension mechanisms 103 inside the housing 102 that constitutes the outer frame of the washing machine.
  • the rotary tank 104 is formed in a bottomed tubular shape and is provided in the outer tank 101. Further, the input port 106 is provided on the front side (left side in FIG. 8) of the rotary tank 104.
  • the rotary tank 104 is configured to be rotatable forward and reverse by a motor 110 provided at the rear of the outer tank 101.
  • the motor 110 is composed of, for example, a brushless DC motor. Then, the motor 110 can freely change the rotation speed of the rotary tank 104 by the inverter control of the control unit 131 (see FIG. 12) described later.
  • a door 111 formed in a substantially circular shape is provided on the front surface of the housing 102.
  • the user takes the laundry 105 in and out of the rotary tub 104 by opening and closing the door 111 and the inlet 106.
  • the opening 101a of the outer tank 101 is formed so as to face the inlet 106. Further, the opening 101a and the housing 102 are connected to each other by ensuring an airtight structure by a stretchable bellows-shaped packing 112.
  • the detergent case 115 is configured so that the detergent charging portion 115a can be pulled out from the detergent case 115 to the front side. With this configuration, the user can easily put the detergent into the detergent case 115.
  • the washing water supplied from the water supply port 113 flows into the detergent case 115. Then, the washing water flows into the outer tub 101 while dissolving the detergent charged in the detergent case 115. The flow of this washing water is indicated by an arrow E.
  • a drain port 116 for discharging washing water is provided at the bottom of the outer tub 101.
  • a drainage channel 117 is connected to the drainage port 116.
  • a drain valve 118 is provided in the drainage channel 117. The drain valve 118 is opened and closed by the control unit 131, and the washing water is stored in the outer tub 101 and drained to the outside of the housing 102.
  • One end of the water channel 119 is connected to the drainage channel 117, and the other end is connected to the lower part of the outer tank 101 near the front.
  • the water channel 119 is located below the outside of the outer tub 101 and is formed in the front-rear direction of the housing 102. Further, the water channel 119 is in communication with the centrifuge device 120 provided below the outer tank 101. Further, the water channel 119 has a water channel 119a connecting the drainage channel 117 and the centrifuge device 120, and a water channel 119b connecting the centrifuge device 120 and the lower part of the outer tank 101 near the front. Then, the washing water in the outer tub 101 flows into the centrifuge device 120 through the water channel 119a. Further, the washing water that has passed through the centrifuge device 120 flows out into the outer tub 101 through the water channel 119b.
  • the washing water flows from the drain port 116 through the drain channel 117, through the water channel 119a, and then passes through the centrifuge device 120. Then, when passing through the centrifuge device 120, the foreign matter contained in the washing water is separated as described below.
  • the foreign matter includes dirt and lint released from the laundry 105, a water softening agent contained in the detergent dissolved in the washing water, and the like.
  • FIG. 9 is a cross-sectional view of a main part of the centrifuge device according to the present embodiment.
  • FIG. 10 is a cross-sectional view taken along the line 10-10 in FIG.
  • FIG. 11 is a cross-sectional view taken along the line 11-11 in FIG.
  • the centrifuge device 120 includes a case 121 that is communicated with the water channel 119, a hollow rotary cylinder 122 that is rotatably provided in the case 121, and a cylinder motor 123 that rotationally drives the rotary cylinder 122. ..
  • the rotary cylinder 122 is provided with a liquid inlet 122a for flowing a liquid from the water channel 119a into the rotary cylinder 122 and a liquid outlet 122b for flowing the liquid from the inside of the rotary cylinder 122 to the water channel 119b. Further, the rotary cylinder 122 has a cylindrical inner peripheral surface 122c. The rotating shaft 122d of the rotating cylinder 122 is set in the vertical direction.
  • the washing water includes water containing detergent (for example, tap water), water not containing detergent, rinsing water during rinsing operation, and the like.
  • the washing water in the outer tub 101 passes through the water channel 119a and flows into the rotary cylinder 122 from the liquid inlet 122a provided at the center of the bottom surface of the rotary cylinder 122. After that, the washing water that has flowed into the rotary cylinder 122 flows out to the water channel 119b from the liquid outlet 122b provided on the upper portion of the rotary cylinder 122. As described above, since the liquid inlet 122a is below the liquid outlet 122b, the washing water passing through the centrifuge 120 flows from the lower side to the upper side in the rotary cylinder 122.
  • the centrifuge device 120 may be installed so that the flow direction of the washing water is in the vertical direction, or may be installed so as to flow in the horizontal direction or the diagonal direction.
  • the cylinder motor 123 is set so that the rotary cylinder 122 rotates at a high speed of, for example, about 4000 rpm.
  • the washing water introduced into the rotary cylinder 122 swirls in the rotary cylinder 122, and a high-speed swirling flow is generated.
  • the washing water passes through the rotating cylinder 122, it receives centrifugal force due to the high-speed rotation of the rotating cylinder 122.
  • the foreign matter contained in the washing water is centrifuged and accumulated toward the inner peripheral surface 122c of the rotary cylinder 122.
  • the inner peripheral surface 122c is centered on the rotating shaft 122d of the rotating cylinder 122, and the diameter of the inner peripheral surface 122c is larger than the maximum diameters of the liquid inlet 122a and the liquid outlet 122b. As a result, the centrifugal force becomes stronger from the rotating shaft 122d of the rotating cylinder 122 toward the inner peripheral surface 122c.
  • the foreign matter separated from the washing water passing through the rotary cylinder 122 by this centrifugal force is held on the inner peripheral surface 122c with a stronger centrifugal force as it approaches the inner peripheral surface 122c of the rotary cylinder 122.
  • the foreign matter separated by the centrifugal force is not drawn back into the circulating flow of the washing water passing through the rotating cylinder 122. That is, it is possible to prevent the dirt from reattaching to the laundry 105, and it is possible to improve the cleaning power.
  • a swirling flow generating unit 124 is provided on the inflow side of the washing water passing through the case 121.
  • the swirl flow generating portion 124 is integrally formed with the case 121, and has a cylindrical portion 125 and a swirl portion 126.
  • the cylindrical portion 125 communicates with the liquid inlet 122a, and the center 125a of the cylindrical portion 125 is provided so as to coincide with the rotating shaft 122d of the rotating cylinder 122.
  • the spiral portion 126 is provided on the upstream side of the cylindrical portion 125, and communicates with the cylindrical portion 125 and the water channel 119a.
  • the side wall 126a of the spiral portion 126 and the outer side wall 119c of the water channel 119a are tangentially connected by the first connecting portion 127a.
  • the side wall 126a of the spiral portion 126 and the side wall 125b of the cylindrical portion 125 are tangentially connected by a second connecting portion 127b.
  • the liquid inflow portion 128 is provided so that the liquid flows from the water channel 119a into the swirl portion 126.
  • the liquid inflow portion 128 is formed substantially at the first connecting portion 127a, and is provided outside the side wall 125b of the cylindrical portion 125.
  • the thicknesses of the side wall 119c of the water channel, the side wall 125b of the cylindrical portion, and the side wall 126a of the spiral portion are constant.
  • the distance Q from the center 125a of the cylindrical portion 125 to the side wall 126a of the spiral portion 126 is continuous from the first connecting portion 127a so as to be the same as the radius R of the cylindrical portion 125 at the second connecting portion 127b. It is changed so that it becomes shorter.
  • the side wall 126a of the spiral portion 126 gradually approaches the side wall 125b of the cylindrical portion 125 according to the distance from the liquid inflow portion 128, which is the first connecting portion 127a, to the second connecting portion 127b. It is configured.
  • the first connecting portion 127a and the second connecting portion 127b are configured to be located opposite to each other with the center 125a of the cylindrical portion 125 interposed therebetween.
  • the angle from the first connecting portion 127a to the second connecting portion 127b is defined as the angle ⁇ .
  • the angle ⁇ is, for example, 90 ° ⁇ ⁇ ⁇ 270 °.
  • 170 ° ⁇ ⁇ ⁇ 190 °, and the angle ⁇ in this embodiment is 180 °.
  • the convex portion 137 is provided at the center of the swirling flow generating portion 124.
  • the convex portion 137 is formed in a columnar shape from the bottom of the swirling flow generating portion 124 toward the liquid inlet 122a.
  • the center of the convex portion 137 coincides with the center 125a of the cylindrical portion 125 and the rotating shaft 122d of the rotating cylinder 122.
  • the height of the convex portion 137 may be substantially the same as the height of the swirling flow generating portion 124 as shown in FIG. 11, or may be made higher than that and protrudes into the liquid inlet 122a or the rotary cylinder 122.
  • the washing water is provided with a swirling component, rises through the cylindrical portion 125, and flows into the rotating cylinder 122 from the liquid inlet 122a.
  • the upper surface 137a of the convex portion 137 is inclined downward from the central portion to the outer circumference. As a result, when the foreign matter in the rotary cylinder 122 is discharged downward, the foreign matter slides down on the upper surface 137a of the convex portion 137, and the foreign matter does not remain on the upper surface 137a.
  • the convex portion 137 may have a hollow cylindrical shape.
  • the centrifuge device 120 is provided with a pump unit 129 on the outflow side of the washing water passing through the case 121.
  • the pump unit 129 is provided with a pump blade 129a integrally formed with the rotary cylinder 122.
  • the water channel 119b is connected to the pump portion 129 so as to be biased sideways from the center of rotation of the pump blade 129a.
  • the pump blade 129a rotates together with the rotary cylinder 122 by being driven by the cylinder motor 123. Due to the pumping action of the pump blades 129a, the washing water in the outer tub 101 flows through the water channel 119 formed below the outer tub 101 and passes through the centrifuge device 120. As a result, the washing water circulates as shown by the arrow F in FIG.
  • the flow velocity of the washing water flowing through the water channel 119 can be set by the capacity of the pump.
  • the capacity of the pump can be set by the number of pump blades 129a (8 in the present embodiment), the shape, and the like, in addition to the rotation speed of the pump blades 129a.
  • the washing water flows through the water channel 119 and circulates between the centrifuge device 120 and the outer tub 1.
  • V1 be the flow velocity of the circulating flow in which the washing water passes through the centrifuge 120
  • V2 be the flow velocity of the swirling flow in which the washing water swirls in the rotary cylinder 122.
  • the flow velocity V2 of the swirling flow is set to be higher than the flow velocity V1 of the circulating flow, that is, V2> V1.
  • the control unit 131 is provided at the lower part inside the housing 102.
  • FIG. 12 is a block configuration diagram of a washing machine provided with a centrifuge according to the present embodiment.
  • the control unit 131 includes the output of the cloth amount detection unit 132 that detects the amount of laundry 105 put into the rotary tub 104 and the water amount detection unit 133 that detects the amount of washing water supplied to the outer tub 101.
  • the output and the output of the rotation detection unit 134 or the like that detects the rotation drive of the rotation tank 104 are input.
  • the control unit 131 controls the drive of the motor 110, the water supply valve 114, the drain valve 118, the cylinder motor 123, and the like based on the washing course set by the user by the operation display unit 135, and executes the washing operation.
  • the washing operation includes each step such as a washing step, a rinsing step, and a dehydration step.
  • the control unit 131 Upon the start of the washing operation, the control unit 131 first detects the amount of the laundry 105 put into the rotary tub 104 by the cloth amount detecting unit 132. The amount of laundry 105 is detected from the amount of torque applied to the motor 110 when the rotary tub 104 is rotated, the current value of the motor 110, and the like.
  • the control unit 131 drives the motor 110 to rotate the rotary tank 104, and performs the cleaning operation described below.
  • the control unit 131 rotates the rotary tub 104, so that the laundry 105 in the rotary tub 104 is lifted in the rotational direction by the baffle 108 and falls from above, and the bottom surface of the rotary tub 104 or the rotary tub 104 It is struck by the laundry 105 accumulated on the bottom.
  • this mechanical force is used for tapping and washing.
  • the rotation speed of the rotary tub 104 when the laundry 105 is beaten and washed is, for example, 45 rpm.
  • the control unit 131 reverses the rotary tank 104 every predetermined time (for example, every several minutes) and drives the rotary tank 104 in forward and reverse rotation.
  • the first rinsing operation is performed following the first intermediate dehydration operation. Then, a second rinsing operation is performed following the second intermediate dehydration operation.
  • the control unit 131 opens the water supply valve 114 to supply a predetermined amount of washing water into the outer tub 101, and rotates the rotary tub 104 in the forward and reverse directions. This causes the laundry 105 to be rinsed.
  • the washing water is water that does not contain detergent and rinse water.
  • the washing water contains various foreign substances such as dirt substances.
  • Some foreign substances separated by the centrifuge 120 have a heavier specific gravity than water.
  • dirt substances include sand, fiber debris, hair, and keratinous dirt.
  • specific gravity is lighter than that of water, those adhering to those having a specific gravity heavier than water such as lint are separated.
  • the distance P between the side wall 126a of the spiral portion 126 and the outer peripheral wall of the convex portion 137 gradually shortens from the first connecting portion 127a to the second connecting portion 127b. Therefore, the washing water flowing into the spiral portion 126 is prevented from decreasing in flow velocity because the swirling flow is generated by the flow along the swirling flow path 136.
  • the washing water to which the swirling component is added in the swirling flow generating unit 124 flows into the rotating cylinder 122 from the liquid inlet 122a. Further, the rotary cylinder 22 is rotated by the cylinder motor 123.
  • the washing water is introduced into the rotary cylinder 122 from the liquid inlet 122a, passes through the rotary cylinder 122, and flows out from the liquid outlet 122b.
  • foreign substances sand, hair, keratin stains, etc.
  • a strong centrifugal force due to a high-speed swirling flow with less turbulence, and the inner peripheral surface 122c of the rotating cylinder 122. It is accumulated toward.
  • the washing water that fills the inside of the rotating cylinder 122 which is outside the circulating flow passing near the rotating shaft 122d of the rotating cylinder 122 and inside the inner peripheral surface 122c of the rotating cylinder 122, is the liquid inlet of the rotating cylinder 122.
  • the 122a and the liquid outlet 122b are occupied by the circulating flow.
  • a strong centrifugal force acts on the washing water in the rotary cylinder 122 toward the inner peripheral surface 122c of the rotary cylinder 122 due to a high-speed swirling flow.
  • the dirty substance separated from the washing water by this centrifugal force and directed toward the inner peripheral surface 122c of the rotating cylinder 122 is not drawn back into the circulating flow passing through the rotating cylinder 122. That is, the separated dirt substances are prevented from returning to the outer tub 101 together with the circulating flow and reattaching to the laundry 105, so that the cleaning effect can be enhanced.
  • the washing water swirls and passes from the bottom to the top.
  • air bubbles generated by the detergent in the washing water and air bubbles in the water channel 119 may enter the rotating cylinder 122 from the swirling flow generating unit 124.
  • bubbles lighter than water gather at the center of the rotating cylinder 122 due to the swirling flow, and further, the action of trying to ascend upward and the flow of washing water from the bottom to the top are combined. It is easily discharged from the liquid outlet 122b to the outside of the rotary cylinder 122.
  • the imbalance between the water and the bubble distribution in the rotary cylinder 122 caused by the bubbles lighter than water staying in the rotary cylinder 122 is suppressed, and the torque of the cylinder motor 123 required to rotate the rotary cylinder 122 fluctuates. Can be minimized. Further, the rotation speed fluctuation of the rotary cylinder 122 caused by the torque fluctuation can be suppressed. Further, since the rotational vibration of the rotary cylinder 122 generated due to the imbalance between the water and the bubble distribution can be suppressed, the rotary cylinder 122 can be made larger even inside the case 121.
  • the washing water from which the dirty substance is separated in the rotary cylinder 122 flows out from the liquid outlet 122b to the pump unit 129.
  • the vortex center of the swirling flow generated by the swirling flow generating unit 124 coincides with the rotating shaft 122d of the rotating cylinder 122, a swirling flow with less turbulence is generated in the rotating cylinder 122. be able to. Therefore, the washing water can be uniformly flowed between the pump blades 129a. Therefore, the pump performance is not deteriorated due to the non-uniform inflow amount, and the durability performance is not deteriorated due to the imbalance due to the non-uniform pressure on the pump blades 129a.
  • the washing water that has flowed into the pump unit 129 flows into the outer tub 101 through the water channel 119b due to the pumping action of the pump blades 129a. Then, the washing water in the outer tub 101 is circulated with the centrifuge device 120 through the water channel 119 by the pump function provided in the centrifuge device 120, and the purification of the washing water proceeds. As a result, it is possible to prevent the separated dirt substances from reattaching to the laundry 105.
  • a pump blade 129a having a pumping action is provided integrally with the rotary cylinder 122, and the control unit 131 rotates the rotary cylinder 122 between the centrifuge device 120 and the outer tank 101. Circulate the washing water at. Therefore, it is not necessary to provide a pump for circulating washing water separately from the centrifuge device 120, and the configuration can be simplified.
  • control unit 131 opens the drain valve 118 at the time of drainage, and flows the washing water in the direction opposite to the arrow F direction circulating in the water channel 119.
  • the foreign matter collected on the inner peripheral surface 122c of the rotary cylinder 122 rides on the flow of the washing water and is discharged to the outside of the housing 102 through the drain valve 118. As a result, it is not necessary to dispose of a part of the purified washing water during centrifugation.
  • the separation of foreign substances contained in the washing water can be performed not only in the washing process but also in the rinsing process.
  • the rinsing effect can be enhanced by separating the foreign matter that has come out of the washing water from the laundry 105 with the centrifuge device 120.
  • the centrifuge device 120 of the present embodiment is provided in the water channel 119 and centrifuges the foreign matter contained in the washing water (liquid) flowing through the water channel 119.
  • the centrifuge device 120 includes a case 121 that is communicated with the water channel 119 and a hollow rotary cylinder 122 that is rotatably provided in the case 121. Further, a cylinder motor having a liquid inlet 122a for flowing washing water from the water channel 119a into the rotary cylinder 22 and a liquid outlet 122b for flowing the washing water from the inside of the rotary cylinder 122 to the water channel 119b, and rotationally driving the rotary cylinder 122.
  • the swirling flow generating section 124 is a swirling flow path 136 that swirls the cylindrical section 125 communicating with the liquid inlet 122a, the liquid inflow section 128 into which the washing water flows in from the water channel 119a, and the washing water flowing in from the liquid inflow section 128. And have. Further, the swirling flow path 136 is formed by a columnar convex portion 137 provided at the center of the swirling flow generating portion 124 and a side wall 124b of the swirling flow generating portion 124.
  • the washing water flowing in from the liquid inflow section 128 is prevented from decreasing in flow velocity by generating a swirling flow in a flow along the swirling flow path 136 centering on the convex portion 137, and the swirling flow generating section.
  • a swirling component is imparted to the washing water by a high swirling flow within 124. Therefore, a strong centrifugal force can be applied to the foreign matter contained in the washing water in the rotary cylinder 122, and the foreign matter can be effectively separated from the washing water.
  • the swirl flow generation unit 124 has a spiral portion 126 provided on the upstream side of the cylindrical portion 125, and the liquid inflow portion 128 is provided outside the side wall 125b of the cylindrical portion 125 and is provided on the side wall of the spiral portion 126.
  • the distance between the 126a and the side wall 125b of the cylindrical portion 125 is configured to be shortened according to the distance from the liquid inflow portion 128. That is, the side wall 126a of the spiral portion 126 is configured to approach the side wall 125b of the cylindrical portion 125 according to the distance from the liquid inflow portion 128.
  • the washing water flowing in from the liquid inflow portion 128 flows in the swirling flow path 136 along the side wall 126a of the swirl portion 126 and swirls around the convex portion 137, so that the washing water has a high speed in the swirling flow generating portion 124.
  • a swirling flow is generated to impart a swirling component to the washing water.
  • FIG. 13 is a cross-sectional view of a main part of the centrifuge device according to the fourth embodiment of the present disclosure.
  • FIG. 14 is a cross-sectional view taken along the line 14-14 in FIG.
  • the feature of the fourth embodiment is that the width of the swirling flow path 136 faces the position facing the liquid inflow portion 128, that is, the washing water flowing into the swirling flow path 136 from the water channel 119a starts to swirl in the swirling flow path 136. At the position, the width is set to be the same as that of the liquid inflow portion 128.
  • the other configurations are the same as those of the third embodiment, the same configurations are designated by the same reference numerals, and the detailed description is incorporated from that of the third embodiment.
  • the width Q1 of the swirling flow path 136 at the position 136a facing the liquid inflow section 128 and the width Q2 of the liquid inflow section 128 do not necessarily have the same dimensions, and the liquid inflow section 128 to the swirl flow generating section 124. It suffices if the decrease in the flow velocity of the inflowing washing water is suppressed.
  • the centrifuge and the washing machine provided with the centrifuge have been described. That is, the washing machine has a washing tub consisting of an outer tub 101 and a washing tub 104 for accommodating the object to be washed 105 and washing water which is a liquid, a water channel 119 for circulating the washing water in the washing tub, and a water channel. 119 is provided with the centrifuge device 120 according to the third embodiment or the fourth embodiment for centrifuging the foreign matter contained in the washing water flowing through the water channel 119.
  • the pump unit 129 of the washing machine is provided in the centrifuge device 120, and the pump blade 129a and the rotary cylinder 122 are integrally rotated by the cylinder motor 123. It is supposed to be.
  • a pump portion (not shown) may be separately provided in the water channel 119 to generate a circulating flow as shown by the arrow F in FIG.
  • the first disclosure is a centrifuge device provided in a water channel that centrifuges foreign matter contained in a liquid flowing through the water channel, and is rotatable in a case connected to the water channel and in a case. It is provided with a hollow rotary cylinder provided in. Further, a cylinder motor having a liquid inlet for flowing liquid from the water channel into the rotary cylinder and a liquid outlet for flowing liquid from the inside of the rotary cylinder to the water channel, and a cylinder motor for rotationally driving the rotary cylinder, and an upstream side of the liquid inlet are provided. It is provided with a swirling flow generator.
  • the swirling flow generating portion has a cylindrical portion communicating with the liquid inlet, a spiral portion provided on the upstream side of the cylindrical portion, and a liquid inflow portion through which the liquid flows from the water channel into the spiral portion.
  • a liquid inflow portion is provided outside the side wall.
  • the liquid that has circled in the swirling flow generating section can generate a swirling flow along the side wall of the cylindrical portion without being obstructed by the flow of the liquid flowing from the water channel. Therefore, the center of the vortex of the swirling flow flowing in the swirling flow generating portion, the center of the cylindrical portion, and the rotation axis of the rotating cylinder can be made to coincide with each other. Therefore, the turbulence of the swirling flow generated in the swirling flow generating unit is reduced, and the swirling component is imparted to the liquid. As described above, a strong centrifugal force can be applied to the foreign matter contained in the liquid in the rotating cylinder, and the foreign matter can be effectively separated from the liquid.
  • the second disclosure is configured such that, in particular, in the first disclosure, the side wall of the spiral portion approaches from the liquid inflow portion toward the side wall of the cylindrical portion according to the distance from the liquid inflow portion.
  • the vortex center of the swirling flow generated by the swirling flow generating unit can be brought closer to the rotation axis of the rotating cylinder located downstream of the swirling flow generating unit. Therefore, it is possible to reduce the turbulence of the swirling flow and apply a strong centrifugal force, and it is possible to effectively separate the foreign matter from the liquid.
  • the third disclosure is that the swirl flow generator is the first connection to which the side wall of the swirl and the waterway are connected, and the side wall of the swirl and the side wall of the cylinder.
  • the liquid that has flowed into the swirl flow generation section can generate a swirl flow by flowing along the side wall of the swirl section.
  • the fourth disclosure is, in particular, in any one of the first to third disclosures, the swirling flow generating portion is provided with an arc wall having the same radius as the side wall of the cylindrical portion on the downstream side of the liquid inflow portion. There is.
  • the fifth disclosure is a washing tub for accommodating an object to be washed and a liquid washing water, a water channel for circulating the washing water in the washing tub, and a foreign substance contained in the washing water provided in the water channel and flowing through the water channel.
  • a washing machine comprising one of the first to fourth disclosed centrifuges for centrifuging.
  • the sixth disclosure is a centrifuge that is provided in a water channel and centrifuges foreign substances contained in a liquid flowing through the water channel, and is a case that is communicated with the water channel and a hollow that is rotatably provided in the case. It is equipped with a rotary cylinder.
  • a liquid inlet that allows liquid to flow into the rotating cylinder from the water channel
  • a liquid outlet that allows liquid to flow out from the inside of the rotating cylinder to the water channel
  • a cylinder motor that rotationally drives the rotating cylinder
  • a swivel provided on the upstream side of the liquid inlet. It is equipped with a flow generator.
  • the swirling flow generating section has a cylindrical section communicating with the liquid inlet, a liquid inflow section in which the liquid flows in from the water channel, and a swirling flow path for swirling the liquid flowing in from the liquid inflow section. , It is formed by a columnar convex portion provided at the center of the swirling flow generating portion and a side wall of the swirling flow generating portion.
  • the liquid flowing in from the liquid inflow section is prevented from decreasing in flow velocity by generating a swirling flow along the swirling flow path centering on the convex portion, and swirls at high speed in the swirling flow generating section.
  • the flow imparts a swirling component to the liquid. Therefore, a strong centrifugal force can be applied to the foreign matter contained in the liquid in the rotating cylinder, and the foreign matter can be effectively separated from the liquid.
  • the seventh disclosure in particular, in the sixth disclosure, is that the swirl flow generating portion has a swirl portion provided on the upstream side of the cylindrical portion, and the liquid inflow portion is provided outside the side wall of the cylindrical portion.
  • the side wall of the spiral portion is configured to approach the side wall of the cylindrical portion according to the distance from the liquid inflow portion.
  • the liquid flowing in from the liquid inflow portion flows in the swirling flow path along the side wall of the swirl portion and swirls around the convex portion, so that a high-speed swirling flow is generated in the swirling flow generating portion and becomes a liquid.
  • a swirling component can be added.
  • the eighth disclosure is that the width of the swirl flow path is set to be the same as that of the liquid inflow portion at a position facing the liquid inflow portion.
  • the ninth disclosure is a washing tub for accommodating an object to be washed and washing water which is a liquid, a water channel for circulating the washing water in the washing tub, and a foreign substance contained in the washing water provided in the water channel and flowing through the water channel.
  • a washing machine comprising one of the sixth to eighth disclosed centrifugal separators for centrifuging.

Landscapes

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

Abstract

L'invention concerne un séparateur centrifuge (20) permettant la séparation centrifuge de corps étrangers contenus dans l'eau (liquide) de lessive s'écoulant à travers un canal d'eau (19a), comprenant un boîtier (21), directement relié au canal d'eau (19a), et un cylindre rotatif creux (22), disposé à l'intérieur du boîtier (21) de façon à pouvoir tourner. Le séparateur comprend une entrée de liquide (22a), permettant l'entrée d'eau de lavage du canal d'eau (19a) au cylindre rotatif (22), et une sortie de liquide (22b), permettant l'évacuation de l'eau de lessive de l'intérieur du cylindre rotatif (22) à un canal d'eau (19b). Le séparateur est équipé d'un moteur de cylindre (23), permettant de faire tourner le cylindre rotatif (22), et d'une section de production d'écoulement de rotation (24), disposée en amont de l'entrée de liquide (22a). La section de production d'écoulement de rotation (24) comporte une partie cylindrique (25), reliée à l'entrée de liquide (22a), une partie vortex (26), disposée en amont de la partie cylindrique (25), et une partie d'entrée de liquide, à travers laquelle l'eau de lavage provenant du canal d'eau (19a) s'écoule dans la partie de tourbillon (26). La partie d'entrée de liquide est disposée davantage vers l'extérieur que la paroi latérale de la partie cylindrique (25).
PCT/JP2020/039335 2019-11-07 2020-10-20 Séparateur centrifuge et machine à laver comprenant un séparateur centrifuge WO2021090671A1 (fr)

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CN202080057680.4A CN114258441A (zh) 2019-11-07 2020-10-20 离心分离装置和具备离心分离装置的洗衣机
JP2021554867A JP7489584B2 (ja) 2019-11-07 2020-10-20 遠心分離装置、および、遠心分離装置を備えた洗濯機

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JP2019-201987 2019-11-07
JP2019-201986 2019-11-07
JP2019201987 2019-11-07
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JP2018075120A (ja) * 2016-11-08 2018-05-17 パナソニックＩｐマネジメント株式会社 洗濯機
JP2018183277A (ja) * 2017-04-24 2018-11-22 パナソニックＩｐマネジメント株式会社 洗濯機
WO2019004036A1 (fr) * 2017-06-26 2019-01-03 パナソニックＩｐマネジメント株式会社 Machine à laver

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CN109923260B (zh) * 2016-11-11 2021-05-28 松下知识产权经营株式会社 洗衣机
CN209252570U (zh) * 2018-07-11 2019-08-16 南阳医学高等专科学校第一附属医院 一种超声波果蔬清洗机

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JP2012050929A (ja) * 2010-09-01 2012-03-15 Gijutsu Kaihatsu Sogo Kenkyusho:Kk 脱泡器
JP2018075120A (ja) * 2016-11-08 2018-05-17 パナソニックＩｐマネジメント株式会社 洗濯機
JP2018183277A (ja) * 2017-04-24 2018-11-22 パナソニックＩｐマネジメント株式会社 洗濯機
WO2019004036A1 (fr) * 2017-06-26 2019-01-03 パナソニックＩｐマネジメント株式会社 Machine à laver

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WO2024018653A1 (fr) * 2022-07-22 2024-01-25 パナソニックＩｐマネジメント株式会社 Dispositif de séparation centrifuge et machine à laver comportant un dispositif de séparation centrifuge

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