EP2589697A1 - Drum-type washing machine - Google Patents
Drum-type washing machine Download PDFInfo
- Publication number
- EP2589697A1 EP2589697A1 EP12748940.9A EP12748940A EP2589697A1 EP 2589697 A1 EP2589697 A1 EP 2589697A1 EP 12748940 A EP12748940 A EP 12748940A EP 2589697 A1 EP2589697 A1 EP 2589697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- jetting
- washing machine
- water tub
- loading
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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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
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
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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
Definitions
- the present invention relates to a front-loading-type washing machine that washes laundry contained within a rotary drum.
- Fig. 4 is a cross-sectional view of the front-loading-type washing machine of the related art.
- the front-loading-type washing machine of the related art is equipped with at least drum 21, water-receiving tub 23 that is a water tub, heater 36, and a circulation device.
- Drum 21 is provided inside water-receiving tub 23 so as to be rotatable in the horizontal direction.
- Lid 31 that allows laundry, such as clothing, to be taken into and out of drum 21, is openably and closably provided in the front surface of the water-receiving tub 23 so as to face an opening portion of the front surface of drum 21.
- Heater 36 that is a heating portion that heats the washing water stored within water-receiving tub 23 is provided on the bottom side of water-receiving tub 23.
- the circulation device is constituted by circulating pump 37 that suctions the washing water from opening portion 34 provided at the bottom of water-receiving tub 23, circulation hose 38 that is connected to a discharge port side of circulating pump 37, and discharge port 39 that is connected to one end side of circulation hose 38.
- Discharge port 39 is provided on upside of drum 21 at a position that faces a front opening portion of drum 21, and as shown by B in the drawing, discharges the washing water toward the central portion of drum 21.
- the front-loading-type washing machine of the related art configured as described above lifts the laundry contained within drum 21 by the rotation of drum 21, and stirs the laundry within drum 21. At this time, the washing water heated by heater 36 can be jetted onto the laundry within drum 21 by circulating pump 37, thereby enhancing the cleaning effect on the laundry.
- the front-loading-type washing machine of the related art causes the washing water to be jetted from one discharge port 39 of upside of drum 21. Therefore, when the laundry has fallen within drum 21 due to its own weight, the washing water can be sprayed onto the laundry.
- the washing water in a case where the laundry sticks to drum 21 and is rotating, the washing water is not easily sprayed onto the laundry. As a result, the washing water cannot be uniformly sprayed onto the laundry within the water tub, and a stable cleaning effect is not easily obtained.
- the invention provides a front-loading-type washing machine including a rotary drum that is formed in the shape of a bottomed cylinder; a water tub that rotatably includes the rotary drum; a motor that rotationally drives the rotary drum; a filter case that communicates with the water tub via a drain pipe connected to the bottom of the water tub and has a filter provided therein; a circulating pump that communicates with the filter case via a circulating water suction pipe connected to the filter case; a channel that communicates with the circulating pump via a circulating water discharge pipe connected to the circulating pump, and is formed on the front inner side of the water tub; a plurality of jetting ports that are provided on the inner peripheral side of the channel and discharge washing water into the water tub; and a control device that controls at least steps of washing, rinsing, and spin-drying.
- the opening area of the jetting port provided at the farthest position from a connecting portion between the circulating water discharge pipe and the channel is larger than the opening area of the je
- the jetting amounts of the washing water from the individual jetting ports are made almost equal, and the washing water is uniformly jetted onto laundry within the water tub.
- the front-loading-type washing machine with stable washing performance can be realized.
- Fig. 1 is a cross-sectional view of a front-loading-type washing machine in the embodiment of the invention.
- the front-loading-type washing machine of the embodiment is equipped with rotary drum 43, water tub 42, motor 45, filter case 83 that communicates with water tub 42, circulating pump 67 that communicates with filter case 83, channel 85 that communicates with circulating pump 67, jetting ports 70, and control device 81.
- Water tub 42 is swingably provided inside main body 41, and rotary drum 43 is rotatably provided inside water tub 42.
- Rotary drum 43 is rotated in normal and reverse directions around rotating shaft 44 that is provided in the horizontal direction and is a rotation center shaft that is coupled via belt 46 to motor 45 attached to a lower portion of water tub 42 on the back side.
- the inner wall surface of rotary drum 43 is provided with a plurality of, for example, projection plates 47 that stir laundry, and a number of water passing holes 48 that communicate with the inside of water tub 42.
- Water tub unit 49 is constituted by the above-described water tub 42, rotary drum 43, motor 45, and belt 46. Water tub unit 49 is supported in a vibration-absorbing manner by a plurality of spring bodies 50 from an upper portion of main body 41, and by a plurality of vibration-absorbing dampers 51 from a lower portion of main body 41.
- vibration detector 78 including, for example, an acceleration sensor or the like, which detects the vibration of water tub unit 49.
- Vibration detector 78 detects vibration in triaxial directions of front and rear, left and right, and upper and lower.
- the operation of water tub unit 49 is controlled on the basis of the vibration information detected by vibration detector 78. Since the vibration of water tub unit 49 is not necessarily in one direction, the vibration of water tub unit 49 is detected with high precision by using a multiaxial acceleration sensor as vibration detector 78.
- Openable and closable lid body 52 is provided at the front surface of main body 41 so as to face main body opening portion 40 of rotary drum 43. Lid body 52 seals water tub 42 via seal packing 82 that connects a front portion of water tub 42 and main body opening portion 40 for vibration-absorbing and water sealing.
- Control device 81 is provided above water tub 42.
- a front upper portion of main body 41 is equipped with operation panel 79 having input setting unit 80a and display unit 80b.
- control device 81 If a control method is input via input setting unit 80a of operation panel 79, the input information is displayed on display unit 80b of operation panel 79.
- a control unit (not shown) of control device 81 automatically controls motor 45, water supply device 54, drainage device 55, and water circulation device 56 according to input setting information or a control program. Thereby, control device 81 controls a series of steps, such as washing, rinsing, and spin-drying.
- First water supply valve 57, second water supply valve 58, first water supply pipe 59, second water supply pipe 60, water level detector 76, detergent supply device 61, water supply connecting pipe 62, water tub air vent pipe 77, and control device 81 are provided above water tub 42.
- Detergent supply device 61 stores, for example, detergents and a fabric softener and houses detergent case 61a therein that is drawable from main body 41.
- water tub air vent pipe 77 constituted by a flexible hose is connected to detergent supply device 61.
- the air within water tub 42 pressurized by the formation of bubbles is released via water tub air vent pipe 77.
- Water supply device 54 timely supplies water into water tub 42 from water supply connecting pipe 62 via detergent supply device 61 through first water supply pipe 59 or second water supply pipe 60 by the opening and closing of first water supply valve 57 or second water supply valve 58.
- Drain pipe 64, filter case 83, drain pump 63, circulating pump 67, and drain hose 66 are provided at the bottom of water tub 42.
- Filter case 83 houses filter 65 that traps, for example, lint or the like. Filter 65 is detachably provided from main body 41 by knob 84 provided at filter 65.
- Filter case 83 communicates with water tub 42 via drain pipe 64 connected to the bottom of water tub 42.
- Drain pump 63 communicates with filter case 83 via drainage suction pipe 90 connected to filter case 83.
- Circulating pump 67 communicates with filter case 83 via circulating water suction pipe 68 connected to filter case 83.
- Circulating pump 67 further communicates with channel 85 annularly (including a circular-arc shape) formed on the front inner side of water tub 42 via circulating water discharge pipe 69 connected to circulating pump 67.
- the washing water within water tub 42 is drained via drainage device 55 if necessary.
- drainage device 55 passes the washing water within water tub 42 through filter 65 within filter case 83 via drain pipe 64 by the driving of drain pump 63, sends the washing water into drain pump 63 via drainage suction pipe 90, and then drains the washing water to the exterior of the front-loading-type washing machine via drain hose 66.
- the washing water within water tub 42 circulates via water circulation device 56 if necessary.
- water circulation device 56 passes the washing water within water tub 42 through filter 65 within filter case 83 via drain pipe 64 by the driving of circulating pump 67, and further sends the washing water into circulating pump 67 via circulating water suction pipe 68. Thereafter, the washing water sent into circulating pump 67 is sent into channel 85 via circulating water discharge pipe 69.
- the washing water sent into channel 85 is jetted into rotary drum 43, as shown by arrow A in Fig. 1 , from jetting ports 70 provided on the inner peripheral side of channel 85 that faces clothing entrance 53 of rotary drum 43.
- the washing water is jetted from jetting ports 70 to rotary drum 43, for example in predetermined directions, such as a radial direction and in a predetermined shape by jetting guide plate 86 provided on the front inner surface side of water tub 42.
- jetting guide plate 86 provided on the front inner surface side of water tub 42.
- Heating heater 72 including, for example, a sheathed heater or the like is provided in the horizontal direction in recess 71 formed at the bottom within water tub 42 to heat the washing water within water tub 42.
- a temperature detector 73 such as a thermistor, which detects the water temperature of the washing water within water tub 42, is provided in the vicinity of heating heater 72.
- the washing water within water tub 42 heated by heating heater 72 is circulated via water circulation device 56 and discharged into rotary drum 43 by the aforementioned circulating pump 67. At this time, the washing water is heated and the activity of water molecules increases.
- the washing performance of the front-loading-type washing machine is improved by scattering the washing water containing the activated detergent onto laundry.
- a rear side wall of the bottom of the outer periphery of water tub 42 is formed with air trap 74 that communicates with drain pipe 64.
- Air trap 74 is connected to water level detector 76 including, for example, a pressure sensor or the like, by air pipe 75.
- Water level detector 76 detects water levels at a plurality of steps by the hydraulic pressure of the washing water supplied into water tub 42.
- channel 85 and its peripheral structure of the embodiment will be described using Fig. 2 , referring to Fig. 1 .
- Fig. 2 is a cross-sectional view when the front of the rotary drum of the front-loading-type washing machine in the embodiment of the invention is viewed from the inside.
- jetting ports 70 are constituted by a plurality of jetting ports 70a to 70e provided on the inner peripheral side of annular (including a circular-arc shape) channel 85. Jetting ports 70a to 70e are provided, for example, in a circle shape at regular angles in the circumferential direction with respect to rotating shaft 44 of rotary drum 43.
- jetting port 70a and jetting port 70b are provided with the equal opening area, at positions where the distances within channel 85 from connecting portion 69a that connects a lowermost portion of channel 85 and circulating water discharge pipe 69 are equal, in the vertical direction of Fig. 2 , at almost the same (including the same) height in the vertical direction of channel 85.
- the opening area means the area of the inflow surface of the washing water that passes through jetting ports 70 by operating circulating pump 67.
- jetting ports 70c and 70d at higher positions than jetting port 70a and jetting port 70b are also provided with the equal opening area, at positions where the distances within channel 85 from connecting portion 69a are equal, at almost the same (including the same) height in the vertical direction.
- Jetting port 70e is provided at an uppermost portion in the vertical direction. That is, jetting port 70a and jetting port 70b, jetting port 70c, jetting port 70d, and jetting port 70e are provided in this order so as to be away from connecting portion 69a.
- the opening area of jetting port 70e provided at the farthest position from connecting portion 69a is formed so as to be larger than the opening areas of jetting ports 70a and 70b provided at the nearest position from connecting portion 69a.
- the opening area of jetting ports 70a and 70b, the opening area of jetting ports 70c and 70d, and the opening area of jetting port 70e are formed so as to be larger than the latter one in this order. That is, the opening area of jetting port 70e is formed so as to be the largest among a plurality of jetting ports 70a to 70e provided on the inner peripheral side of channel 85, and jetting ports 70 are formed so that the opening area becomes larger as being away (provided on the upper side in the vertical direction) from connecting portion 69a. Thereby, the jetting amounts of the washing water from individual jetting ports 70 are efficiently made almost equal, and the washing water is uniformly jetted onto laundry within water tub 42. As a result, the front-loading-type washing machine with more stable washing performance can be realized.
- the “distances within channel 85 are equal” means that the distance from circulating water discharge pipe 69 to jetting port 70a in the clockwise direction within channel 85 and the distance from circulating water discharge pipe 69 to jetting port 70b in the counterclockwise direction are equal, with respect to a straight line that connects circulating water discharge pipe 69 and rotating shaft 44.
- the cross-sectional shape of jetting ports 70 in the horizontal direction has, for example, a circle shape
- the invention is not limited to this.
- the jetting port may be formed in a substantially triangular shape (including a triangular shape) or in a substantially quadrangular shape (including a quadrangular shape). Thereby, the washing water is jetted into water tub 42 from jetting ports 70.
- the washing water discharged from circulating pump 67 is sent into channel 85 formed on the front inner side of water tub 42 from the bottom side of water tub 42 via circulating water discharge pipe 69.
- the washing water sent into channel 85 is radially jetted into rotary drum 43 from all directions of the circumference of annular (including a circular-arc shape) channel 85, from a plurality of jetting ports 70 formed in channel 85.
- the jetting amounts from individual jetting ports 70a to 70e provided at almost equal angles (including equal angles) in the circumferential direction can be made almost equal by changing the opening areas of jetting ports 70a to 70e.
- the flow velocity of the washing water decreases as it goes to the upper side of channel 85, a decrease in the flow rate of the washing water jetted from jetting ports 70 is prevented by this configuration. As a result, the washing performance of the front-loading-type washing machine can be stabilized.
- filter case 83 and its peripheral structure of the embodiment will be described using Fig. 3 .
- Fig. 3 is an exploded perspective view of main portions of the front-loading-type washing machine in the embodiment of the invention.
- drain pump 63 is connected to an upper side portion of filter case 83 connected to drain pipe 64, via drainage suction pipe 90.
- Circulating pump 67 is connected to the other side portion of filter case 83 via circulating water suction pipe 68.
- Filter 65 provided within filter case 83 is equipped with a plurality of opening portions 89.
- Opening portions 89 of filter 65 are constituted by a plurality of drain-side opening portions 88a sectioned by ribs of drain-side rib portion 88 that is a grid-like rib structure that is provided on drain pump 63 side, and a plurality of circulation-side opening portions 87a sectioned by ribs of circulation-side rib portion 87 that is a grid-like rib structure that is provided on circulating-pump 67 side.
- drain-side opening portions 88a be formed to be larger than circulation-side opening portions 87a.
- drain pump 63 If drain pump 63 is driven during drainage, the washing water that has flowed into filter case 83 via drain pipe 64 from water tub 42 passes through drain-side rib portion 88 of filter 65, passes through drain pump 63, and is drained from drain hose 66.
- lint or the like within the washing water that is larger than the openings of drain-side opening portions 88a is trapped by meshes formed by drain-side rib portion 88 and drain-side opening portions 88a, and lint or the like that is smaller than the openings of drain-side opening portions 88a is discharged to the exterior of the front-loading-type washing machine.
- the washing water that has flowed into filter case 83 via drain pipe 64 from water tub 42 passes through circulation-side rib portion 87 of filter 65, and is sent to circulating pump 67 from circulating water suction pipe 68. Thereafter, the washing water is jetted into rotary drum 43 from jetting ports 70a to 70e via circulating water discharge pipe 69.
- lint or the like within the washing water that is larger than the openings of circulation-side opening portions 87a is trapped by the meshes formed by circulation-side rib portion 87 and circulation-side opening portions 87a.
- the individual opening areas of jetting ports 70a to 70e provided on the inner peripheral side of channel 85 are made larger than any of individual opening portions 89 that constitute the aforementioned filter 65 through which the washing water passes when circulating through water circulation device 56.
- the lint or the like that has passed through the meshes of circulation-side rib portion 89 is reliably trapped by filter 65, and jetting ports 70a to 70e are prevented from being clogged.
- the individual jetting amounts of the washing water from jetting ports 70a to 70e are continuously kept almost equal, and decline in washing efficiency is prevented.
- the opening area of jetting ports 70a and 70b, the opening area of jetting ports 70c and 70d, and the opening area of jetting port 70e be formed so as to be larger in this order.
- the invention is not limited to this.
- the opening areas of jetting ports 70a to 70d may have arbitrary sizes if necessary. That is, for example, the opening area of jetting port 70e may be made to be the largest, and the opening areas of jetting ports 70a, 70b 70c, and 70d other than jetting port 70e may be made to have the same size.
- the opening areas of jetting ports 70c, 70d, and 70e may be made to have the same size, and the opening areas of jetting ports 70a and 70b may be made to be smaller than that of jetting ports 70c, 70d, and 70e. This raises the degree of freedom in design.
- jetting ports 70 are provided in five locations at equal angles in the circumference direction
- the invention is not limited to this.
- an arbitrary number of jetting ports may be arranged depending on the internal diameter, shape, or the like of water tub 42. Thereby, the same effects are obtained.
- the front-loading-type washing machine of the invention can exhibit stable washing performance by virtue of the configuration of the water circulation device, this washing machine is useful for applications of other washing machines that have the function to circulate washing water.
Abstract
Description
- The present invention relates to a front-loading-type washing machine that washes laundry contained within a rotary drum.
- In the related art, front-loading-type washing machines that improve washing performance by discharging washing water to laundry are suggested (for example, refer to PTL 1).
- Hereinafter, the configuration of a front-loading-type washing machine of the related art shown in PTL 1 will be described using
Fig. 4 . -
Fig. 4 is a cross-sectional view of the front-loading-type washing machine of the related art. - As shown in
Fig. 4 , the front-loading-type washing machine of the related art is equipped with at leastdrum 21, water-receivingtub 23 that is a water tub,heater 36, and a circulation device. -
Drum 21 is provided inside water-receivingtub 23 so as to be rotatable in the horizontal direction.Lid 31 that allows laundry, such as clothing, to be taken into and out ofdrum 21, is openably and closably provided in the front surface of the water-receivingtub 23 so as to face an opening portion of the front surface ofdrum 21. -
Heater 36 that is a heating portion that heats the washing water stored within water-receivingtub 23 is provided on the bottom side of water-receivingtub 23. - The circulation device is constituted by circulating
pump 37 that suctions the washing water fromopening portion 34 provided at the bottom of water-receivingtub 23,circulation hose 38 that is connected to a discharge port side of circulatingpump 37, anddischarge port 39 that is connected to one end side ofcirculation hose 38. -
Discharge port 39 is provided on upside ofdrum 21 at a position that faces a front opening portion ofdrum 21, and as shown by B in the drawing, discharges the washing water toward the central portion ofdrum 21. - The front-loading-type washing machine of the related art configured as described above lifts the laundry contained within
drum 21 by the rotation ofdrum 21, and stirs the laundry withindrum 21. At this time, the washing water heated byheater 36 can be jetted onto the laundry withindrum 21 by circulatingpump 37, thereby enhancing the cleaning effect on the laundry. - However, the front-loading-type washing machine of the related art causes the washing water to be jetted from one
discharge port 39 of upside ofdrum 21. Therefore, when the laundry has fallen withindrum 21 due to its own weight, the washing water can be sprayed onto the laundry. However, in a case where the laundry sticks to drum 21 and is rotating, the washing water is not easily sprayed onto the laundry. As a result, the washing water cannot be uniformly sprayed onto the laundry within the water tub, and a stable cleaning effect is not easily obtained. - PTL 1 Japanese Patent Unexamined Publication No.
9-215893 - The invention provides a front-loading-type washing machine including a rotary drum that is formed in the shape of a bottomed cylinder; a water tub that rotatably includes the rotary drum; a motor that rotationally drives the rotary drum; a filter case that communicates with the water tub via a drain pipe connected to the bottom of the water tub and has a filter provided therein; a circulating pump that communicates with the filter case via a circulating water suction pipe connected to the filter case; a channel that communicates with the circulating pump via a circulating water discharge pipe connected to the circulating pump, and is formed on the front inner side of the water tub; a plurality of jetting ports that are provided on the inner peripheral side of the channel and discharge washing water into the water tub; and a control device that controls at least steps of washing, rinsing, and spin-drying. The opening area of the jetting port provided at the farthest position from a connecting portion between the circulating water discharge pipe and the channel is larger than the opening area of the jetting port provided at the nearest position from the connecting portion.
- Thereby, the jetting amounts of the washing water from the individual jetting ports are made almost equal, and the washing water is uniformly jetted onto laundry within the water tub. As a result, the front-loading-type washing machine with stable washing performance can be realized.
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Fig. 1 is a cross-sectional view of a front-loading-type washing machine in an embodiment of the invention. -
Fig. 2 is a cross-sectional view when the front of the rotary drum of the front-loading-type washing machine is viewed from the inside. -
Fig. 3 is an exploded perspective view of main portions of the front-loading-type washing machine. -
Fig. 4 is a cross-sectional view of a front-loading-type washing machine of the related art. - Hereinafter, an embodiment of the invention will be described, referring to the drawings. The invention is not limited by the present embodiment.
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Fig. 1 is a cross-sectional view of a front-loading-type washing machine in the embodiment of the invention. - As shown in
Fig. 1 , the front-loading-type washing machine of the embodiment is equipped withrotary drum 43,water tub 42,motor 45,filter case 83 that communicates withwater tub 42, circulatingpump 67 that communicates withfilter case 83,channel 85 that communicates with circulatingpump 67,jetting ports 70, andcontrol device 81. -
Water tub 42 is swingably provided insidemain body 41, androtary drum 43 is rotatably provided insidewater tub 42.Rotary drum 43 is rotated in normal and reverse directions around rotatingshaft 44 that is provided in the horizontal direction and is a rotation center shaft that is coupled viabelt 46 tomotor 45 attached to a lower portion ofwater tub 42 on the back side. - The inner wall surface of
rotary drum 43 is provided with a plurality of, for example,projection plates 47 that stir laundry, and a number ofwater passing holes 48 that communicate with the inside ofwater tub 42. -
Water tub unit 49 is constituted by the above-describedwater tub 42,rotary drum 43,motor 45, andbelt 46.Water tub unit 49 is supported in a vibration-absorbing manner by a plurality ofspring bodies 50 from an upper portion ofmain body 41, and by a plurality of vibration-absorbingdampers 51 from a lower portion ofmain body 41. - An upper rear portion of
water tub 42 is provided withvibration detector 78 including, for example, an acceleration sensor or the like, which detects the vibration ofwater tub unit 49.Vibration detector 78 detects vibration in triaxial directions of front and rear, left and right, and upper and lower. The operation ofwater tub unit 49 is controlled on the basis of the vibration information detected byvibration detector 78. Since the vibration ofwater tub unit 49 is not necessarily in one direction, the vibration ofwater tub unit 49 is detected with high precision by using a multiaxial acceleration sensor asvibration detector 78. - Openable and
closable lid body 52 is provided at the front surface ofmain body 41 so as to face mainbody opening portion 40 ofrotary drum 43.Lid body 52seals water tub 42 via seal packing 82 that connects a front portion ofwater tub 42 and mainbody opening portion 40 for vibration-absorbing and water sealing. -
Control device 81 is provided abovewater tub 42. A front upper portion ofmain body 41 is equipped withoperation panel 79 havinginput setting unit 80a anddisplay unit 80b. - If a control method is input via
input setting unit 80a ofoperation panel 79, the input information is displayed ondisplay unit 80b ofoperation panel 79. A control unit (not shown) ofcontrol device 81 automatically controlsmotor 45,water supply device 54,drainage device 55, andwater circulation device 56 according to input setting information or a control program. Thereby,control device 81 controls a series of steps, such as washing, rinsing, and spin-drying. - First
water supply valve 57, secondwater supply valve 58, firstwater supply pipe 59, secondwater supply pipe 60,water level detector 76,detergent supply device 61, watersupply connecting pipe 62, water tubair vent pipe 77, andcontrol device 81 are provided abovewater tub 42. -
Detergent supply device 61 stores, for example, detergents and a fabric softener and housesdetergent case 61a therein that is drawable frommain body 41. In a rear upper portion ofdetergent supply device 61, water tubair vent pipe 77 constituted by a flexible hose is connected todetergent supply device 61. For example, during a washing step, the air withinwater tub 42 pressurized by the formation of bubbles is released via water tubair vent pipe 77. -
Water supply device 54 timely supplies water intowater tub 42 from watersupply connecting pipe 62 viadetergent supply device 61 through firstwater supply pipe 59 or secondwater supply pipe 60 by the opening and closing of firstwater supply valve 57 or secondwater supply valve 58. -
Drain pipe 64,filter case 83,drain pump 63, circulatingpump 67, anddrain hose 66 are provided at the bottom ofwater tub 42. -
Filter case 83houses filter 65 that traps, for example, lint or the like.Filter 65 is detachably provided frommain body 41 byknob 84 provided atfilter 65. -
Filter case 83 communicates withwater tub 42 viadrain pipe 64 connected to the bottom ofwater tub 42.Drain pump 63 communicates withfilter case 83 viadrainage suction pipe 90 connected tofilter case 83. Circulatingpump 67 communicates withfilter case 83 via circulatingwater suction pipe 68 connected tofilter case 83. Circulatingpump 67 further communicates withchannel 85 annularly (including a circular-arc shape) formed on the front inner side ofwater tub 42 via circulatingwater discharge pipe 69 connected to circulatingpump 67. - At the time of the completion of the washing step, at the time of the completion of a rinsing step, or the like, the washing water within
water tub 42 is drained viadrainage device 55 if necessary. Specifically,drainage device 55 passes the washing water withinwater tub 42 throughfilter 65 withinfilter case 83 viadrain pipe 64 by the driving ofdrain pump 63, sends the washing water intodrain pump 63 viadrainage suction pipe 90, and then drains the washing water to the exterior of the front-loading-type washing machine viadrain hose 66. - In a prewashing step, the washing step, the rinsing step, or the like, the washing water within
water tub 42 circulates viawater circulation device 56 if necessary. Specifically,water circulation device 56 passes the washing water withinwater tub 42 throughfilter 65 withinfilter case 83 viadrain pipe 64 by the driving of circulatingpump 67, and further sends the washing water into circulatingpump 67 via circulatingwater suction pipe 68. Thereafter, the washing water sent into circulatingpump 67 is sent intochannel 85 via circulatingwater discharge pipe 69. The washing water sent intochannel 85 is jetted intorotary drum 43, as shown by arrow A inFig. 1 , from jettingports 70 provided on the inner peripheral side ofchannel 85 that facesclothing entrance 53 ofrotary drum 43. At this time, the washing water is jetted from jettingports 70 torotary drum 43, for example in predetermined directions, such as a radial direction and in a predetermined shape by jettingguide plate 86 provided on the front inner surface side ofwater tub 42. The details will be described below usingFig. 2 . - Thereby, a detergent loaded into
water tub 42 is quickly dissolved in the washing water, biasing of the detergent that comes into contact with laundry is prevented, and the detergent is activated. As a result, the washing or rinsing performance is improved. -
Heating heater 72 including, for example, a sheathed heater or the like is provided in the horizontal direction inrecess 71 formed at the bottom withinwater tub 42 to heat the washing water withinwater tub 42. For example, atemperature detector 73, such as a thermistor, which detects the water temperature of the washing water withinwater tub 42, is provided in the vicinity ofheating heater 72. - The washing water within
water tub 42 heated byheating heater 72 is circulated viawater circulation device 56 and discharged intorotary drum 43 by the aforementioned circulatingpump 67. At this time, the washing water is heated and the activity of water molecules increases. The washing performance of the front-loading-type washing machine is improved by scattering the washing water containing the activated detergent onto laundry. - A rear side wall of the bottom of the outer periphery of
water tub 42 is formed withair trap 74 that communicates withdrain pipe 64.Air trap 74 is connected towater level detector 76 including, for example, a pressure sensor or the like, byair pipe 75.Water level detector 76 detects water levels at a plurality of steps by the hydraulic pressure of the washing water supplied intowater tub 42. - Hereinafter,
channel 85 and its peripheral structure of the embodiment will be described usingFig. 2 , referring toFig. 1 . -
Fig. 2 is a cross-sectional view when the front of the rotary drum of the front-loading-type washing machine in the embodiment of the invention is viewed from the inside. - As shown in
Fig. 2 , jettingports 70 are constituted by a plurality of jettingports 70a to 70e provided on the inner peripheral side of annular (including a circular-arc shape)channel 85. Jettingports 70a to 70e are provided, for example, in a circle shape at regular angles in the circumferential direction with respect to rotatingshaft 44 ofrotary drum 43. - At this time, jetting
port 70a and jettingport 70b are provided with the equal opening area, at positions where the distances withinchannel 85 from connectingportion 69a that connects a lowermost portion ofchannel 85 and circulatingwater discharge pipe 69 are equal, in the vertical direction ofFig. 2 , at almost the same (including the same) height in the vertical direction ofchannel 85. Here, the opening area means the area of the inflow surface of the washing water that passes through jettingports 70 by operating circulatingpump 67. - Similarly, jetting
ports port 70a and jettingport 70b are also provided with the equal opening area, at positions where the distances withinchannel 85 from connectingportion 69a are equal, at almost the same (including the same) height in the vertical direction. Jettingport 70e is provided at an uppermost portion in the vertical direction. That is, jettingport 70a and jettingport 70b, jettingport 70c, jettingport 70d, and jettingport 70e are provided in this order so as to be away from connectingportion 69a. - At this time, the opening area of jetting
port 70e provided at the farthest position from connectingportion 69a is formed so as to be larger than the opening areas of jettingports portion 69a. Thereby, the jetting amounts of the washing water from individual jettingports 70 are made almost equal, and the washing water is uniformly jetted onto laundry withinwater tub 42. As a result, the front-loading-type washing machine with stable washing performance can be realized. - The opening area of jetting
ports ports port 70e are formed so as to be larger than the latter one in this order. That is, the opening area of jettingport 70e is formed so as to be the largest among a plurality of jettingports 70a to 70e provided on the inner peripheral side ofchannel 85, and jettingports 70 are formed so that the opening area becomes larger as being away (provided on the upper side in the vertical direction) from connectingportion 69a. Thereby, the jetting amounts of the washing water from individual jettingports 70 are efficiently made almost equal, and the washing water is uniformly jetted onto laundry withinwater tub 42. As a result, the front-loading-type washing machine with more stable washing performance can be realized. - The "distances within
channel 85 are equal" means that the distance from circulatingwater discharge pipe 69 to jettingport 70a in the clockwise direction withinchannel 85 and the distance from circulatingwater discharge pipe 69 to jettingport 70b in the counterclockwise direction are equal, with respect to a straight line that connects circulatingwater discharge pipe 69 androtating shaft 44. - Although it is preferable that the cross-sectional shape of jetting
ports 70 in the horizontal direction has, for example, a circle shape, the invention is not limited to this. For example, the jetting port may be formed in a substantially triangular shape (including a triangular shape) or in a substantially quadrangular shape (including a quadrangular shape). Thereby, the washing water is jetted intowater tub 42 from jettingports 70. - The washing water discharged from circulating
pump 67 is sent intochannel 85 formed on the front inner side ofwater tub 42 from the bottom side ofwater tub 42 via circulatingwater discharge pipe 69. The washing water sent intochannel 85 is radially jetted intorotary drum 43 from all directions of the circumference of annular (including a circular-arc shape)channel 85, from a plurality of jettingports 70 formed inchannel 85. - As described above, the jetting amounts from
individual jetting ports 70a to 70e provided at almost equal angles (including equal angles) in the circumferential direction can be made almost equal by changing the opening areas of jettingports 70a to 70e. Although the flow velocity of the washing water decreases as it goes to the upper side ofchannel 85, a decrease in the flow rate of the washing water jetted from jettingports 70 is prevented by this configuration. As a result, the washing performance of the front-loading-type washing machine can be stabilized. - Hereinafter, filter
case 83 and its peripheral structure of the embodiment will be described usingFig. 3 . -
Fig. 3 is an exploded perspective view of main portions of the front-loading-type washing machine in the embodiment of the invention. - As shown in
Fig. 3 ,drain pump 63 is connected to an upper side portion offilter case 83 connected to drainpipe 64, viadrainage suction pipe 90. Circulatingpump 67 is connected to the other side portion offilter case 83 via circulatingwater suction pipe 68. -
Filter 65 provided withinfilter case 83 is equipped with a plurality of openingportions 89. Openingportions 89 offilter 65 are constituted by a plurality of drain-side opening portions 88a sectioned by ribs of drain-side rib portion 88 that is a grid-like rib structure that is provided ondrain pump 63 side, and a plurality of circulation-side opening portions 87a sectioned by ribs of circulation-side rib portion 87 that is a grid-like rib structure that is provided on circulating-pump 67 side. At this time, it is preferable that drain-side opening portions 88a be formed to be larger than circulation-side opening portions 87a. Thereby, for example, lint or foreign matter can be removed from the washing water circulated intowater tub 42, and the cleaning effect can be further enhanced. - If
drain pump 63 is driven during drainage, the washing water that has flowed intofilter case 83 viadrain pipe 64 fromwater tub 42 passes through drain-side rib portion 88 offilter 65, passes throughdrain pump 63, and is drained fromdrain hose 66. Here, lint or the like within the washing water that is larger than the openings of drain-side opening portions 88a is trapped by meshes formed by drain-side rib portion 88 and drain-side opening portions 88a, and lint or the like that is smaller than the openings of drain-side opening portions 88a is discharged to the exterior of the front-loading-type washing machine. - If circulating
pump 67 is driven during circulation, the washing water that has flowed intofilter case 83 viadrain pipe 64 fromwater tub 42 passes through circulation-side rib portion 87 offilter 65, and is sent to circulating pump 67 from circulatingwater suction pipe 68. Thereafter, the washing water is jetted intorotary drum 43 from jettingports 70a to 70e via circulatingwater discharge pipe 69. Here, lint or the like within the washing water that is larger than the openings of circulation-side opening portions 87a is trapped by the meshes formed by circulation-side rib portion 87 and circulation-side opening portions 87a. - Then, as a user rotates
knob 84 offilter 65 to detach the filter from the outside, the lint or the like trapped infilter 65 can be discarded, and filter 65 can be cleaned. - At this time, the individual opening areas of jetting
ports 70a to 70e provided on the inner peripheral side ofchannel 85 are made larger than any ofindividual opening portions 89 that constitute theaforementioned filter 65 through which the washing water passes when circulating throughwater circulation device 56. Thereby, the lint or the like that has passed through the meshes of circulation-side rib portion 89 is reliably trapped byfilter 65, and jettingports 70a to 70e are prevented from being clogged. As a result, the individual jetting amounts of the washing water from jettingports 70a to 70e are continuously kept almost equal, and decline in washing efficiency is prevented. - In the present embodiment, it is preferable that the opening area of jetting
ports ports port 70e be formed so as to be larger in this order. However, the invention is not limited to this. As long as the size of the opening area of at least jettingport 70e is the largest, the opening areas of jettingports 70a to 70d may have arbitrary sizes if necessary. That is, for example, the opening area of jettingport 70e may be made to be the largest, and the opening areas of jettingports 70b port 70e may be made to have the same size. Also, for example, the opening areas of jettingports ports ports - Although an example in which jetting
ports 70 are provided in five locations at equal angles in the circumference direction has been described in the embodiment, the invention is not limited to this. For example, an arbitrary number of jetting ports may be arranged depending on the internal diameter, shape, or the like ofwater tub 42. Thereby, the same effects are obtained. - As described above, since the front-loading-type washing machine of the invention can exhibit stable washing performance by virtue of the configuration of the water circulation device, this washing machine is useful for applications of other washing machines that have the function to circulate washing water.
-
- 41: MAIN BODY
- 42: WATER TUB
- 43: ROTARY DRUM
- 44: ROTATING SHAFT (ROTATION CENTER SHAFT)
- 45: MOTOR
- 46: BELT
- 47: PROJECTION PLATE
- 48: WATER PASSING HOLE
- 49: WATER TUB UNIT
- 50: SPRING BODY
- 51: VIBRATION-ABSORBING DAMPER
- 52: LID BODY
- 53: CLOTHING ENTRANCE
- 54: WATER SUPPLY DEVICE
- 55: DRAINAGE DEVICE
- 56: WATER CIRCULATING DEVICE
- 63: DRAIN PUMP
- 64: DRAIN PIPE
- 65: FILTER
- 66: DRAIN HOSE
- 67: CIRCULATING PUMP
- 68: CIRCULATING WATER SUCTION PIPE
- 69: CIRCULATING WATER DISCHARGE PIPE
- 70, 70a TO 70e: JETTING PORT
- 81: CONTROL DEVICE
- 83: FILTER CASE
- 85: CHANNEL
- 86: JETTING GUIDE PLATE
- 87: CIRCULATION-SIDE RIB PORTION
- 87a: CIRCULATION-SIDE OPENING PORTION
- 88: DRAIN-SIDE RIB PORTION
- 88a: DRAIN-SIDE OPENING PORTION
- 89: OPENING PORTION
- 90: DRAINAGE SUCTION PIPE
Claims (6)
- A front-loading-type washing machine comprising:a rotary drum that is formed in a shape of a bottomed cylinder;a water tub that rotatably includes the rotary drum;a motor that rotationally drives the rotary drum;a filter case that communicates with the water tub via a drain pipe connected to a bottom of the water tub, and has a filter provided therein;a circulating pump that communicates with the filter case via a circulating water suction pipe connected to the filter case;a channel that communicates with the circulating pump via a circulating water discharge pipe connected to the circulating pump, and is formed on a front inner side of the water tub;a plurality of jetting ports that are provided on an inner peripheral side of the channel, and discharge washing water into the water tub; anda control device that controls steps of at least washing, rinsing, and spin-drying,wherein an opening area of the jetting port provided at the farthest position from a connecting portion between the circulating water discharge pipe and the channel is larger than an opening area of the jetting port provided at the nearest position from the connecting portion.
- The front-loading-type washing machine of Claim 1,
wherein at least the opening area of the jetting port provided at the farthest position from the connecting portion is the largest among the plurality of jetting ports. - The front-loading-type washing machine of Claim 1,
wherein the opening areas of the jetting ports are larger in an order of a distance from the connecting portion. - The front-loading-type washing machine of Claim 1,
wherein the jetting ports provided at the same distance from the circulating water discharge pipe have a same opening area. - The front-loading-type washing machine of Claim 1 or 4,
wherein the opening areas of the jetting ports are larger than opening portions that constitute the filter. - The front-loading-type washing machine of Claim 5,
wherein the opening portions are constituted by circulation-side opening portions provided on a circulating pump side and drain-side opening portions provided on a drain pump side, and
wherein the drain-side opening portions are larger than the circulation-side opening portions.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011036750A JP5799200B2 (en) | 2011-02-23 | 2011-02-23 | Drum washing machine |
PCT/JP2012/001189 WO2012114734A1 (en) | 2011-02-23 | 2012-02-22 | Drum-type washing machine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2589697A1 true EP2589697A1 (en) | 2013-05-08 |
EP2589697A4 EP2589697A4 (en) | 2013-10-23 |
EP2589697B1 EP2589697B1 (en) | 2016-02-10 |
Family
ID=46720526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12748940.9A Not-in-force EP2589697B1 (en) | 2011-02-23 | 2012-02-22 | Drum-type washing machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130125596A1 (en) |
EP (1) | EP2589697B1 (en) |
JP (1) | JP5799200B2 (en) |
CN (1) | CN103052744B (en) |
WO (1) | WO2012114734A1 (en) |
Cited By (5)
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WO2017137176A1 (en) * | 2016-02-10 | 2017-08-17 | BSH Hausgeräte GmbH | Laundry care appliance having a detergent solution pump |
EP3587654A1 (en) * | 2018-06-27 | 2020-01-01 | LG Electronics Inc. -1- | Washing machine |
CN111032944A (en) * | 2017-08-25 | 2020-04-17 | 夏普株式会社 | Washing and dewatering cylinder and washing machine |
EP3690120A1 (en) * | 2019-02-01 | 2020-08-05 | LG Electronics Inc. | Washing machine |
IT201900019451A1 (en) * | 2019-10-21 | 2021-04-21 | Ufi Innovation Center S R L | WASHING MACHINE WITH FILTER GROUP |
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KR101933139B1 (en) * | 2012-01-10 | 2018-12-28 | 삼성전자주식회사 | Drum washing machine |
CN103352352A (en) * | 2013-06-24 | 2013-10-16 | 林智勇 | Environment-friendly washing machine |
KR102160979B1 (en) * | 2013-08-06 | 2020-09-29 | 삼성전자주식회사 | Washing Machine |
JP5835786B1 (en) * | 2015-06-10 | 2015-12-24 | トップ産業株式会社 | Disposable filter for drum type washing machine |
US10174425B2 (en) | 2015-09-22 | 2019-01-08 | Eastman Kodak Company | Non-aqueous compositions and articles using stannous alkoxides |
KR102489664B1 (en) * | 2016-02-16 | 2023-01-18 | 주식회사 위니아전자 | Washing machine |
JP6546873B2 (en) * | 2016-04-13 | 2019-07-17 | 日立グローバルライフソリューションズ株式会社 | Drum type washer / dryer |
JP7097546B2 (en) * | 2017-12-26 | 2022-07-08 | 青島海爾洗衣机有限公司 | washing machine |
WO2019201116A1 (en) * | 2018-04-16 | 2019-10-24 | 青岛海尔滚筒洗衣机有限公司 | Front-loading washer and spray system thereof |
CN110387708A (en) * | 2018-04-16 | 2019-10-29 | 青岛海尔滚筒洗衣机有限公司 | Roller washing machine and its spray system |
JP7079344B2 (en) * | 2018-04-16 | 2022-06-01 | 青島海爾▲滾▼筒洗衣机有限公司 | Drum washing machine and its spray system |
CN110387706B (en) * | 2018-04-16 | 2021-12-03 | 青岛海尔洗涤电器有限公司 | Roller washing machine and spraying system thereof |
US11319659B2 (en) | 2018-12-28 | 2022-05-03 | Whirlpool Corporation | Button trap and sieve for a laundry appliance |
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Also Published As
Publication number | Publication date |
---|---|
EP2589697A4 (en) | 2013-10-23 |
EP2589697B1 (en) | 2016-02-10 |
US20130125596A1 (en) | 2013-05-23 |
WO2012114734A1 (en) | 2012-08-30 |
JP5799200B2 (en) | 2015-10-21 |
JP2012170693A (en) | 2012-09-10 |
CN103052744B (en) | 2015-08-19 |
CN103052744A (en) | 2013-04-17 |
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