WO2005026426A1

WO2005026426A1 - Washing machine and washing-drying machine

Info

Publication number: WO2005026426A1
Application number: PCT/JP2004/013218
Authority: WO
Inventors: Toshifumi Koike; Shiro Ohbayashi; Toshiyasu Kamano; Yuzuru Miyano; Isao Hiyama; Tetsushi Yoshida
Original assignee: Hitachi Home & Life Solutions, Inc.
Priority date: 2003-09-10
Filing date: 2004-09-10
Publication date: 2005-03-24
Also published as: CN102535099A; CN101525829A; CN1813091A; CN101525829B; CN1813091B; CN1827897B; CN102535099B; JP3984940B2; CN1827897A; JP2005080946A

Abstract

A washing-drying machine with a pulsator, where cleaning power is prevented from being reduced and drying time is prevented from being lengthened, which causes less clothes tangling and less wrinkles in dry finished laundry. A washing-drying machine has a washing-cum-dewatering vessel (2), a pulsator (4) provided on the bottom of the washing-cum-dewatering vessel (2), and a drive device for driving the pulsator (4). The pulsator (4) has a slope where laundry (38) is brought upward while being caused to slide. When the pulsator (4) is rotated, the laundry is moved vertically, and rotated at the same time in the same direction as the pulsator (4) rotates.

Description

Specification

Washing machine and washing dryer

Technical field

The present invention relates to a washing machine or a washing / drying machine having a pulsator for applying mechanical force to laundry.

Background art

[0002] As a conventional washing / drying machine, wash and operate the machine! After supplying tap water (washing / washing water), rotate the pulsator forward and reverse to apply mechanical power to the laundry. After that, a washing operation is performed, and then tap water (rinsing water) is supplied, and a rinsing operation is performed in which the same mechanical force is applied to the laundry. A dehydration operation for centrifugally dewatering the contained rinse water is performed, and thereafter, while supplying warm air to the washing and dewatering tub, the washing and dewatering tub and the pulsator are rotated integrally, or the pulsator is corrected. 2. Description of the Related Art There is a known configuration in which a laundry is dried by rotating the laundry upside down to dry the laundry (see, for example, Patent Document 1). Wrinkles during drying are caused by the drying progressing while the posture of the laundry is fixed. In the operation of rotating the pulsator forward and backward during the drying operation, in addition to the function of switching the top and bottom of the laundry to promote the evaporation of water, the posture is changed by moving the laundry so that the same part does not remain bent. It has a function to work.

[0003] As pulsator used in a washing machine, which the rotary shaft and oblique Naru flat surface disposed toward the washing tub is known (e.g., see Patent Document 2.) ₀ The pulsator As a It is provided at one corner in the washing tub, whose size is smaller than the bottom surface of the washing tub. When this pulsator is rotated around the rotation axis, it generates noise toward the washing tub and generates a blow-up water flow.

[0004] As a pulsator used in a washing machine, a rotating blade of a washing machine provided with a plurality of blades which are arranged on the inner bottom portion of the washing machine and have a substantially radial fan shape from the center toward the outer periphery is known. (See, for example, Patent Document 3).

[0005] Patent Document 1: JP-A-2002-360966 (pages 7 to 9). [0006] Patent Document 2: Japanese Patent Publication No. 35-8440 (page 1, FIG. 7).

[0007] Patent Document 3: Specification and drawings of Japanese Utility Model Application No. 55-15919 (Japanese Utility Model Application Publication No. 56-116972) (page 1, FIG. 1 and FIG. 2).

Disclosure of the invention

Problems to be solved by the invention

[0008] In a washing machine equipped with a norseater, it is preferable to reduce tangling of the cloth in order to increase the washing effect, such as by reducing washing, unevenness, and rinsing satisfactorily. Furthermore, with a washer / dryer equipped with a drying function, it is necessary to reduce the tangling of the cloth in the washing process and the drying operation in order to achieve a dry finish with less wrinkling. When entanglement occurs, the entangled portion is fixed in shape, causing wrinkling.

[0009] In order to reduce the tangling of the cloth, it is necessary to reduce the rotation angle of the pulsator (decrease the number of rotations, shorten the rotation time). In washing, the mechanical force applied to the laundry is reduced and the washing is performed. The power drops. Further, in drying, there is a problem in that the movement of the cloth and the change of cloth are reduced, and uneven drying and drying time are prolonged.

[0010] Of the above pulsators, those provided with a flat surface oblique to the rotating shaft facing the inside of the washing tub are used in washing machines having neither a dehydration function nor a drying function. The size of the norseater is smaller than the size of the bottom of the washing tub and is provided at one corner of the bottom inside the washing tub. This type of washing machine uses a small amount of laundry at a time and uses a lot of water. The bath ratio expressed by (amount of water) / (amount of cloth) was also used in a larger state than the current washing machine. Therefore, in washing machines that perform washing and dewatering by reducing the bath ratio, which has a large washing and dewatering capacity, and washing and drying machines that are further provided with a drying function, the cloth is effectively added to the laundry while providing the mechanical force. Need to further consider reducing entanglement

[0011] Further, in the case where a plurality of blades that form a fan shape in a substantially radial direction toward the outer peripheral portion of the central shaft are provided, the height of the blades is formed to be the same as the central portion force to the vicinity of the outer periphery. Especially at the center, the thickness of the blades (dimensions in the rotation direction or circumferential direction) is small, and the pulsator has a shape protruding at a steep angle. Such a blade shape exerts a large force on the laundry in the rotation direction, and is likely to cause cloth entanglement. [0012] Further, any of the above pulsators is used in a washing machine having no drying function, and has little consideration for realizing a dry finish with little wrinkling.

[0013] An object of the present invention is to provide a washing machine capable of performing washing with reduced cloth entanglement while effectively applying mechanical force to laundry, and a washing / drying machine capable of reducing cloth entanglement in a drying process. Is to do.

Means for solving the problem

[0014] In the present invention, the rotating body provided at the bottom of the washing tub has an inclined surface that imparts vertical movement to the laundry by its rotational movement. The diameter of the rotating body shall be 90% or more of the inner diameter of the washing tub, and the inclined surface will apply a centrifugal force to move the laundry to the outer peripheral side of the rotating body when the rotating body rotates. The side may be configured to give upward movement while sliding the laundry on the slope. When the rotating body stops rotating, it is preferable that the inclined surface slides the laundry downward on the inclined surface.

[0015] Specifically, the rotating body has an inclined surface toward the inside of the washing tub, and the inclined surface has a top portion whose vertical position is higher in the circumferential direction and a valley portion whose height is lower on the outer peripheral side of the rotating body. It is formed so that the height gradually increases from the center of rotation of the rotating body toward the top, and the top and the valley have the highest force at the top with respect to the height difference between the top and the valley. It is formed so that the length in the circumferential direction up to is longer. It is preferable to form one to three apexes in the circumferential direction on the outer peripheral side of the rotating body, and it is preferable to provide two apexes. The inclined surface may be formed as a flat surface.

[0016] In the above-mentioned rotating body, the force for transporting the laundry in the rotating direction is small, and the laundry is easily subjected to centrifugal force by the rotation of the rotating body from the center side of the washing tub to the peripheral wall (side wall) side. Moving. The laundry moved to the peripheral wall is moved up and down by the undulation on the outer peripheral side of the rotating body, and mechanical force is applied. In addition, the laundry that has gathered on the side of the surrounding wall is broken by the vertical movement and can be replaced. In the washer / dryer, the collapse of the laundry during drying works particularly effectively to reduce tangling of the cloth.

The invention's effect

[0017] According to the washing machine or the washer / dryer of the present invention, the pulsator is simply rotated and driven around the rotation axis, and is provided with a mechanical force on the laundry by giving the laundry a vertical movement. To increase the cleaning power and reduce cloth entanglement, resulting in uneven washing and wrinkles Can be reduced.

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] An inclined surface that forms a vertical undulation is formed along a circumferential direction of a norseater of a washing machine or a washing and drying machine. The inclined surface may be a flat surface or a curved surface. The pulsator has a center axis of rotation located at the center of the bottom of the washing tub, and has a large diameter so as to cover the inside of the bottom of the washing tub. Here, covering the inside of the bottom of the washing tub does not necessarily mean that 100% of the inside of the bottom is covered. When the washing tub is formed in a cylindrical shape, the outer diameter of the norseta may be substantially equal to the inner diameter of the washing tub, or a gap may be provided between the outer peripheral portion of the pulsator and the peripheral wall of the washing tub. The outer diameter of the pulsator was set to 90% or more of the inner diameter of the washing tub. The pulsator has a peak on the outer peripheral side where the peak of the undulation increases, and the height of the undulation also gradually increases the rotation center force of the pulsator toward the top of the peak. The undulation is formed to have one to three peaks in the circumferential direction in order to secure the height of the undulation and make the slope of the inclined surface gentle. In order to increase the height of the undulations and form the slope more smoothly, it is better to use a small number of peaks. desirable.

[0019] In the above pulsator, the force for transporting the laundry in the rotating direction is small, and the laundry is easily moved to the central side of the washing tub by the rotation of the pulsator to the peripheral wall (side wall) side. I do. The laundry moved to the peripheral wall is moved up and down by the undulation on the outer peripheral side of the pulsator, and mechanical force is applied. Furthermore, the laundry gathering on the side of the peripheral wall is broken down by the vertical movement and can be replaced. In the washer / dryer, the collapse of the laundry during drying works particularly effectively to reduce the cloth entanglement.

Hereinafter, a washing and drying machine will be described as an example. Since the washing / drying machine of the present embodiment performs the spin-drying step, the washing tub in which the laundry is put is described as a washing-and- spinning tub.

FIG. 1 is a schematic diagram showing a vertical section of a washing / drying machine according to an embodiment of the present invention.

[0022] Reference numeral 1 denotes a rectangular cylindrical outer frame forming an outer shell. The outer frame 1 is made of a steel plate. Reference numeral 2 denotes a washing and dewatering tub, which has a small hole 2a for water passage and ventilation on its peripheral wall (side wall), and A fluid balancer 3 is provided at the edge, and a pulsator 4 is rotatably installed inside the bottom as a rotating body that applies mechanical force to the laundry. The pulsator 4 has small holes 4a for water flow and ventilation. Reference numeral 5 denotes an outer tub that contains the washing and dewatering tub 2 and stores washing water and rinsing water.A driving device 6 is attached to the outside of the bottom by a steel plate mounting base 7, and four corners at the upper end of the outer frame 1 are provided. The outer tank 5 is suspended from the center of the outer frame 1 by suspending the outer tank 5 evenly from all sides by four vibration isolating support devices 8 locked to the outer frame 1.

The pulsator 4 has a large diameter (the outer diameter is 90% or more of the inner diameter of the washing and dewatering tub) covering most of the bottom of the washing and dewatering tub 2, and its rotation center axis is It is arranged so as to overlap the rotation center axis of the water tank 2. The shape of the pulsator 4 will be described later in detail.

The driving device 6 includes a driving motor, an electric operation clutch mechanism, and a planetary gear reduction mechanism, rotates the pulsator 4 with the washing and dehydrating tub 2 stationary (stirring mode), and And the pulsator 4 are rotated in opposite directions (washing mode), and the washing and dewatering tub 2 and the pulsator 4 are integrally rotated in the same direction (dehydration / drying mode).

[0025] The top cover 9 having the outer garment inlet 9a is fitted into the opening edge so as to cover the upper opening of the outer frame 1, and is attached to the outer frame 1 together with the front panel 10 and the back panel 11 by mounting screws. .

[0026] The outer garment inlet 9a formed in the top cover 9 is openably and closably covered by an outer lid 31 attached to the top cover 9 by a hinge 31a so as to open in two (folded in a mountain). An inner garment inlet 28a formed in the outer tub upper cover 28 attached to the outer tub upper cover 28 is configured to be openably and closably covered by an inner lid 32 attached to the outer tub upper cover 28 by a hinge 32a.

[0027] A front panel box 12, which is a front storage section formed between the top cover 9 and the front panel 10, includes a power switch 13, an operation panel 14 provided with an input switch and a display element, and an outer tank 5 It incorporates a water level sensor 15 that generates a water level signal according to the water level inside, and a control unit 16. These constitute a control device.

[0028] A back panel that is a rear storage portion formed between the top cover 9 and the back panel 11. The box 17 contains a washing water supply means. The washing water supply means is constituted by a main water supply solenoid valve 20 having an inlet side connected to a faucet connection port 18 and an outlet side connected to a water inlet port 19. Further, although not shown, a water supply means constituted by a bath water pump having the water inlet side connected to the hose connection port and the water outlet side connected to the water inlet 19 may be provided.

[0029] A detergent dissolving vessel 21 for dissolving the detergent is provided between the main water supply solenoid valve 20 and the water inlet 19 so that the detergent liquid dissolved by the water from the main water supply solenoid valve 20 is supplied to the water inlet. Constitute. The detergent dissolving container 21 is provided with a finishing agent charging chamber 21a. By supplying water from the auxiliary water supply solenoid valve 22, the flexible finishing agent charged in the finishing agent charging chamber 21d is supplied to the finishing agent charging chamber. It is configured to overflow from 21a and supply it to the water inlet 19.

The water inlet 19 penetrates through the bottom of the top cover 9 and the rear part of the outer tank upper cover 28 of the outer tank 5 and opens toward the upper opening of the washing and dewatering tank 2.

[0031] The hot air circulating drying means is formed so as to extend vertically upward along the outer wall surface on the rear side of the outer tub 5 from the suction port 5a formed on the lower side wall of the outer tub 5, and to form the suction port 5a. A water-cooling dehumidification duct 23, which is a dehumidification air passage for blocking the infiltration of the washing water, and a cooling water sprinkling part 24, which is located at the upper part of the water-cooling dehumidification duct 23 and is a water-cooling dehumidification means for supplying cooling water into the duct. , A descending air duct, which is a descending air passage that is vertically folded downward at a position higher than the water level of the outer tub 5 in the washing process and extends downward along the outer wall surface of the outer tub 5 toward the lower side of the outer tub 5. 25, a circulating fan 26 that is arranged in the space below the outer tub 5 and sucks air from the descending air duct 25 into the suction port to generate circulating air, and an outer tub from the outlet of the circulating fan 26 The upper part of the air passage that extends vertically along the outer wall of 5 above An upflow duct 27 and a heater (PTC heater) 29 which is a heating means installed on an outer tank upper cover 28 attached to the upper end of the outer tank 5 and which is a heating means for heating the circulating air sent from the upflow duct 27. It is provided with a blow-in port 30 for blowing heated circulating air into the washing and dewatering tub 2 therein. The cooling water sprinkling section 24 is connected to the sprinkling electromagnetic valve 24a.

The water-cooling dehumidifying duct 23, the descending duct duct 25, and the rising duct duct 27, which constitute the circulating air passage, are arranged on the outer wall surface on the rear side of the outer tub 5 in a circumferential direction of the outer tub 5, and a part thereof is arranged. The back lid la, which is formed integrally with the outer tub 5 and covers the outside, is formed into a shape that swells outward and is screwed. [0033] A humidity sensor 40 and a first temperature sensor 41 serving as humidity detecting means are installed in the descending air duct 25, and a second temperature sensor is provided in the air duct on the downstream side of the heater 29 of the blowing port 30. 42 is installed. In order to accurately detect the humidity and temperature of the circulating air dewatered in the water-cooled dehumidifying duct 23, the humidity sensor 40 and the first temperature sensor must be mixed after the circulated air cooled by the water-cooled dehumidification is mixed well. Therefore, the humidity sensor 40 and the first temperature sensor 41 are installed at the lower part of the downdraft duct 25 far from the water-cooled dehumidification duct 23 or at the suction location 26 a of the circulation fan 26. Further, the humidity sensor 40 and the first temperature sensor 41 are installed at positions where they are exposed when the back cover la is removed for convenience of maintenance work.

[0034] Although not shown here, lint collecting means is provided at the folded portion from the water-cooled dehumidifying duct 23 to the descending air duct 25.

The drain port 5 b formed at the bottom of the outer tank 5 is connected to a drain hose 34 via a drain solenoid valve 33. The air trap 5c is connected to the water level sensor 15 via an air tube 35. At the lower edge of the outer frame 1, a base 37 made of a synthetic resin with legs 36 attached to four corners is attached.

Reference numeral 38 denotes the laundry put into the washing / dewatering tub 2.

[0037] The hot air circulating drying means drains the washing water in the outer tub 5 after the washing, spins the washing and dewatering tub 2 at a high speed, spins the water, and then rotates the washing and dehydrating tub 2 at a high speed or at a low speed. Alternatively, the circulating fan 26 is operated while the pulsator 4 is inverted, and the humid air in the outer tub 5 and the washing and dewatering tub 2 is sucked out from the outlet 5a, and the water-cooled dehumidifying dat 23 is raised. In the above, the water is cooled and dehumidified by cooling water supplied from the cooling water sprinkling section 24 into the water-cooled dehumidifying duct 23. Thereafter, the cooled and dehumidified air is sucked into the circulation fan 26 by descending the descending air duct 25, and the force of the circulating fan 26 is also sent to the blowing port 30 through the ascending air duct 27 and the heater 29. Blow into the center of the dewatering tank 2. The circulating air blown into the washing and dewatering tub 2 as described above touches the laundry in the washing and dewatering tub 2 to dry the laundry.

Next, the shape of the pulsator and the cloth movement of the laundry during washing and drying will be described.

FIG. 2 is a perspective view of a pulsator according to an embodiment of the present invention. Pulsator 4 The surface has a V-shape symmetrical to the axis perpendicular to the rotation axis of the pulsator 4 (indicated by the two-dot chain line B-B in the figure), and the inclined plane 4b between which the central force increases toward the outer periphery and the inclined plane 4b The valley is composed of 4c. The surface has a number of small holes 4a through which water for washing and hot air for drying flow. When viewed from the washing and dewatering tub 2 (fixed side), when the pulsator 4 is rotated, the surface of the pulsator 4 gradually increases in height from the valley 4c to the inclined plane 4b, and reaches the top. Later, the height decreases toward valley 4c. Point force at which the height of the pulsator 4 surface changes gradually This is a significant difference from the pulsator shown in Figs. 12 and 13 and plays a large role in preventing cloth entanglement. In this embodiment, when the pulsator 4 makes one rotation, the surface of the pulsator 4 moves up and down twice. The amplitude of this vertical movement is larger at the outer periphery.

Here, the pulsator of FIGS. 12 and 13 will be described.

[0041] In a washing / drying machine equipped with a nourseter, it is necessary to reduce tangling of the cloth in the washing process and the drying operation in order to reduce wrinkles and achieve a finish of drying. When entanglement occurs, the entangled portion is fixed in shape and causes wrinkling. The pulsator 52 shown in FIG. 12 is formed in a dish-like shape by curving upwardly so as to approach the peripheral edge thereof, and has a plurality of upwardly projecting radial blades 52b provided on the surface thereof. 52c is a number of small holes through which hot water flows during washing drainage and drying. Detergent power is generated by the frictional action of the radial blades 52b rubbing the laundry 38 and the fir action of deforming the laundry 38.

FIG. 13 is a cross-sectional view of the pulsator 52 taken along line AA in FIG. Since the blades 52b protrude at an acute angle with respect to the base surface of the pulsator 52, when the pulsator 52 is rotated, the rotational force acts on the laundry 38 more than the centrifugal force. That is, in the portion of the protrusion b projecting at a steep angle, the force that the laundry 38 receives the force of the protrusion, that is, the surface pressure, is sharply increased as compared with the both sides in the rotation direction of the protrusion. . For this reason, the force by which the protrusions carry the laundry 38 in the rotation direction is increased. As shown in FIG. 13, the laundry 38 slides and rolls on the pulsator 52, and is pushed in the direction of the pulsator 52 while being pushed by the blades 52b or being pulled by the blades 52b. I do. Also, a force is generated by the blade 52b to lift the laundry 38, Since 52b projects at a steep angle and its width b is also small, this force is slight, and the vertical movement of the laundry 38 hardly occurs. In addition, the slightly generated force is applied only to the stacked laundry that is in contact with or very close to the Nolseater 52, and is not transmitted to the laundry located in the upper layer.

[0043] When the laundry 38 rolls on the pulsator 52, the laundry 38 becomes in a dumpling shape and is immediately in a state in which cloth entanglement easily occurs. Further, as shown in FIG. 12, when the laundry 38 is arranged with the central force of the pulsator 52 also applied to the outer periphery, the speed difference between the central portion and the outer peripheral portion of the norseta 52 causes many portions located at the outer peripheral portion to roll and twist ( This is particularly noticeable in long clothing such as long sleeves and pants.) Since the pulsator 52 repeats the forward and reverse rotations, this twist is canceled by rotating in the opposite direction. Actually, the twisting that the laundry 38 cannot rotate in the forward and reverse symmetry gradually becomes tight. Due to this twist, the laundry 38 becomes a thin string shape, and becomes more easily entangled with the cloth. As a result, pleated wrinkles are generated on the laundry 38, and the finish of drying is reduced.

In order to reduce the entanglement of the cloth, it is necessary to reduce the rotation angle of the pulsator (decrease the number of rotations, shorten the rotation time). In washing, the mechanical force applied to the laundry is reduced and the washing is performed. The power drops. Further, in drying, there is a problem in that the movement of the cloth and the change of cloth are reduced, and uneven drying and drying time are prolonged.

[0045] The movement of the laundry during washing and drying will be described with reference to Figs. FIG. 3 is a diagram in which the pulsator 4 is developed in the circumferential direction for about half the circumference, and illustrates the movement of the laundry 38 on the pulsator 4. 4 is a longitudinal sectional view of the washing and dewatering tub 2, and FIG. 5 is a plan view of the washing and dewatering tub 2 cut from the line CC in FIG. 4 and viewed from above.

When the pulsator 4 is rotated in the direction of the arrow when the laundry 38 is at the position of the valley 4c shown in FIG. 3 (a), the laundry 38 slides on the inclined plane 4b of the pulsator 4 to rotate. Rotates in the same direction as the rotation direction of. The surface shape of the pulsator 4 has a shape in which the surface force changes smoothly in a shape in which the blades protrude at a steep angle as in the pulsator shown in Fig. 13, so that the laundry 38 is pushed or pulled by the blades. The laundry does not clump or get tangled, because it is not strong. At the same time, the laundry 38 moves from the valley 4c (a) along the inclined plane 4b to the upper side of the inclined plane 4b due to the wedge action (lifted upward). After reaching the uppermost part (a), it moves downward by gravity and repeats the vertical movement returning to the valley part 4c (ゥ) again. At this time, by appropriately selecting the rotation speed of the pulsator, the natural frequency of the vertical movement of the laundry coincides with the frequency of the vertical movement of the blade surface, so that the vertical movement of the laundry can be given more efficiently. it can.

As shown in FIGS. 4 and 5, the laundry 38 moves to the outer peripheral portion of the pulsator 4 due to the centrifugal force generated by the rotation of the pulsator 4, and moves in the circumferential direction along the inner wall surface of the washing and dewatering tub 2. Place in This is because, as described above, the centrifugal force acts on the laundry 38 more strongly than the force in the rotation direction because the surface shape force of the pulsator 4 smoothly changes in the rotation direction. Since the outer peripheral portion has a large amplitude in the vertical direction of the blade surface, a large vertical movement can be given to the laundry 38 efficiently. When the rotation of the pulsator 4 stops, a movement of falling to the valley 4c is added, so that the laundry 38 is replaced, and no washing or drying unevenness occurs. That is, the laundry 38 collected on the outer periphery of the pulsator 4 by centrifugal force is broken by the vertical movement of the laundry 38. Further, as shown in FIG. 12, the laundry is not disposed over the central force and the outer peripheral portion of the pulsator 4, so that the clothes are not twisted due to the speed difference between the inner and outer peripheries.

As described above, the laundry 38 moves in the up and down direction, and rotates in the washing and spin-drying tub 2 in the same direction as the rotation direction of the noruster 4. As the laundry 38 moves up and down along the inclined plane 4b, during washing, the laundry 38 is washed by the effect of tap washing and push washing. Further, at the time of drying, the volume of the washing / dewatering tub 2 can be effectively used by the vertical movement of the laundry 38, and the laundry 38 can be spread in the washing / dewatering tub 2 and can be quickly dried with less wrinkles. Since the laundry 38 moves up and down while rotating in the direction of rotation of the noursetter 4, a gap is generated between the laundry and warm air easily spreads not only on the surface of the laundry 38 but also inside the laundry 38. Evaporation of water from 38 is promoted and drying time can be shortened.

Further, the pulsator 4 has an advantage that the amount of water during washing can be significantly reduced as compared with the pulsator of FIGS. In the pulsator of FIGS. 12 and 13, the washing and dewatering tub has sufficient washing water, and the laundry 38 has a buoyancy and the pulsator surface force is slightly floated (separated). By rotating the pulsator in this state, the blades 52b rubbed the laundry 38 to obtain detergency. When the amount of washing water is reduced with the pulsator of Figs. 38 is placed on the pulsator 52, the blades 52b bite into the laundry 38, and the blades 52b and the laundry 38 are engaged. When the pulsator 52 is rotated in this state, the laundry 38 and the pulsator 52 rotate almost integrally, and no relative movement occurs and no detergency is generated.

On the other hand, in the pulsator 4, the surface shape of the pulsator 4 changes smoothly. For this reason, even when the amount of washing water is small and the laundry 38 is on the pulsator, when the pulsator is rotated, the laundry 38 slides on the pulsator and moves up and down due to the wedge action of the inclined surface 4b, and is washed. Force is generated. When the amount of water is reduced, it is better to provide a means for circulating the washing water so that the washing water can be spread over the entirety of the washing, and to make the washing water fall from above the laundry.

As shown in FIG. 6, even when the shape of the inclined surface is a mountain shape, the same cloth movement as described above can be realized. The surface of the pulsator 50 is composed of a fan-shaped, generally mountain-shaped inclined surface 50b that rises from the center toward the outer periphery, and a valley portion 50c that connects the inclined surfaces 50b. The outer periphery of the pulsator 50 has two vertices (tops) 50d in the circumferential direction, and a valley 50c is formed between the vertices 50d and 50d. A ridge portion 50e is formed in which the rotational center force gradually increases toward the vertex 50d. The direction in which the inclined surface 50b is directed on both sides in the circumferential direction of the ridge portion 50e is different. The inclined surface 50b may be a flat surface or a curved surface. 50a is a small hole through which water for washing and hot air for drying flow. FIG. 7 is a diagram showing the pulsator 50 developed in the circumferential direction and a change in the shape of the inclined surface 50b in the circumferential direction. The feature of this pulsator is that it has a mountain shape in which the inclination angle in the circumferential direction of the inclined surface 50b gradually increases toward the vertex at first, and gradually decreases as approaching the vertex. In this way, the valley 5 Oc is smoothly connected to the foot of the slope 50b, and the foot serves as a runway. The laundry 38 can be efficiently jumped upwards near the apex where the inclination angle is steep while sliding on the runway. For this reason, a larger vertical movement can be given to the laundry.

[0052] Even if the inclination angle of the sloping surface 50b in the radial direction is increased to increase the height difference of the pulsator surface, the shape change is gentle, so that the clothes do not roll and the laundry does not become entangled. Can be given a large vertical movement. Therefore, the detergency and drying efficiency must be increased. Power S can. Naturally, it is naturally better to increase the center angle of the fan of the chevron slope (closer to 180 °), increase the slope 50b and reduce the valley 50c.

[0053] The pulsator may be shaped with a single slope 5 lb, as shown in FIG.

The inclined surface 51b is an inclined surface extending from the outer peripheral portion beyond the rotation center axis to the other end. Reference numeral 51c denotes a bottom surface connected to the lowest part of the inclined surface 51b, and reference numeral 51a denotes a number of small holes through which warm water for drying and washing flows. In the figure, a force in which the inclined surface 51b is shown as a plane. Even if it is a mountain-shaped inclined surface as shown in FIG. The inclined surface 51b has a size occupying at least half or more of the pulsator 51. Of course, the entire pulsator 51 may have an inclined surface of 5 lb (in this case, there is no bottom surface 51c). However, since the bottom surface 51c functions as a runway, the outer peripheral force of the nourseta 51 also has a bottom surface 51c within a range of about 1Z4 in diameter. The laundry easily moves above the inclined surface 51b. The feature of this shape is that the height difference of the inclined surface 51b can be increased without increasing the inclination angle of the inclined surface 51b. Compared with the pulsator with the opposite inclined surface shown in Fig. 2, a maximum height difference of about 2 times can be secured at the same inclination angle. As a result, the vertical movement of the laundry 38 can be further increased, and the capacity of the washing and dewatering tub 2 can be used more effectively, so that the laundry 38 can be prevented from spreading and quickly wrinkling during drying. .

In FIGS. 6 and 7, the number of vertices (tops) existing on the outer peripheral portion of the pulsator is two, but as shown in FIG. 9, it may be three. (A) is a perspective view of the pulsator, (b) is a side view, and (c) is a top view (blade surface). In the pulsator 60 of FIG. 9, three valleys 60b are formed in the circumferential direction, and a top 60a is formed on the outer peripheral portion between the valleys 60b. Between the troughs 60b and the troughs 60b, the rotational center force is also formed so that the height gradually increases toward the top 60a. At this time, a ridge portion 60e is formed from the center of rotation toward the top portion 60a, and inclined surfaces 60c and 60d having different directions are formed on both sides in the circumferential direction of the ridge portion 60e. The inclined surfaces 60c and 60d can be formed by a flat surface or a curved surface. The shape is the same as that of the pulsator of FIG. 6 except for the numbers of the vertices 60a and the valleys 60b. However, as the number of vertices increases, it becomes more difficult to increase the height of the vertices and make the slope of the inclined surface small and gentle. The number of peaks (mountains) in a washing machine or a washing / drying machine with a rated capacity of 6-10 kg for washing and dehydration and a drying capacity of 2-8 kg is 1-3. Is desirable. To increase the height of the vertices to give a large vertical movement to the laundry, and to reduce the slope and smooth the slope, the smaller the number of vertices, the better. Considering the rotation balance when the pulsator rotates, it is desirable to have two vertices.

As described above, in the pulsator of each of the above-described embodiments, the pulsator is rotated to move the laundry vertically along the inclined surface, and to rotate the laundry in the same direction as the pulsator. . The greater the vertical movement of the laundry, the greater the cleaning power, the shorter the drying time, and the lower the wrinkles. In addition, since the nor center of each of the above-mentioned embodiments has a large slip with the laundry, it is possible to further improve the detergency by providing minute irregularities or small blades on the inclined surface.

FIG. 10 shows a plan view (A) of the pulsator of FIGS. 2 and 6 as viewed from above (from the blade surface side) and heights (B) and (C) of the blade surface as representative examples. (B) and (C) show changes in the height of the blade surface in the circumferential direction at radial positions where the radii from the center of rotation are R1, R2, and R3, respectively, in FIG.

FIG. (B) shows the case of the pulsator 4 of FIG. 2, in which the inclined surface 4b is a flat surface. However, when the height change of the blade surface in the circumferential direction is illustrated, It can be seen that the peaks (HI, H2, H3) where the heights are highest are generated. It is understood that a ridge is formed when these ridges are connected in the radial direction, and the ridge gradually increases toward the outer periphery of the rotational center force. Thus, in the pulsator 4 of FIG. 2 as well, the top and the ridge can be defined in addition to the valley 4c.

FIG. (C) shows the case of the pulsator 50 of FIG. In the case of the pulsator 50 shown in FIG. 6, the valley portion 50c, the top portion 50d, and the ridge portion 50e can be easily seen even if the blade surface height in the circumferential direction is illustrated.

In any case, it can be understood from FIG. 10 that the valley, the top and the ridge, and the ridge gradually increase from the rotation center toward the outer periphery. At each radial position, the circumferential length (circumferential length) of the inclined surface with respect to the blade surface height H (H1, H2, H3, H4, H5, H6) L (L1, L2, L3, L4 , L5, L6) are large, and it can be understood that the inclination angle is small to form a gentle slope. FIG. 11 qualitatively shows the results of an experimental study of the relationship between the inclination angle of the inclined surface (the angle with respect to the direction of rotation of the pulsator), the upward and downward movement of the laundry, and the cloth entanglement. is there. The vertical movement of the laundry increased in proportion to the inclination angle of the slope, but peaked at a certain angle, and decreased after that. From this, it was found that there was an optimum inclination angle. This is because if the inclination angle is too large, the laundry is pushed by the inclined surface, making it difficult for the laundry to slip on the surface of the pulsator, and making it difficult to move above the inclined surface.

[0061] On the other hand, cloth entanglement suddenly starts increasing at an inclination angle at which the vertical movement of the laundry starts decreasing.

This is because if the angle of inclination is too large, the laundry will be in a dumpling shape at the valley of the inclined surface that slides on the surface of the pulsator and performs a rolling motion.

According to the experiment, in the case of opposed inclined surfaces as shown in FIG. 2 and FIG. 6, the inclination angle is preferably 15 to 25 °. At this time, the height difference of the slope is about 0.13 to 0.22 times the pulsator diameter. In the case of a single inclined surface as shown in Fig. 8, the inclination angle was preferably 15-30 °.

[0063] According to the above embodiment, by simply rotating the pulsator around the rotation axis, the laundry moves in the vertical direction of the washing and dewatering tub while sliding on the pulsator, and at the same time as the rotation direction of the pulsator. Since the laundry 38 rotates in the direction, the laundry 38 does not form a dumpling, and the laundry 38 is less likely to be entangled or twisted. For this reason, wrinkling of the laundry 38 can be suppressed, and the dry finish can be greatly improved. Further, occurrence of uneven drying due to entanglement can be prevented.

[0064] The pulsator disclosed in Patent Document 2 described above is provided with a flat surface oblique to the impeller rotation axis facing the inside of the washing tub on the impeller, and the flat surface is rotated around the impeller shaft to rotate the washing tub. A pulse is generated in the water in the pulsator, and the fact that the pulsator surface is an inclined surface means that a force pulsator similar to the pulsator of the above-described embodiment (FIG. 8) is disposed at one corner of the bottom of the washing tub. (The diameter of the pulsator is small), the laundry cannot be moved up and down. Naturally, even if the pulsator of Patent Document 2 is applied to a washing and drying machine, only a part of the laundry moves, and the laundry cannot be dried because there is no water in the washing tub during drying.

[0065] The pulsator of Patent Document 3 is disposed on the inner bottom of the washing machine, and is provided with a plurality of blades that form a substantially radial fan shape toward the outer periphery of the central shaft, and at least one of these blades is provided. 1 The height of one blade is higher than that of the other blades, and this high blade has a central force of approximately 2Z3, which is directed toward the outer periphery. The width of the outer periphery of the higher blade is set to 1.5 to 2 times that of the lower blade.

[0066] The pulsator shape of Patent Document 3 is for bringing the blades into contact with the laundry stepwise, reducing the load applied to the outer peripheral portion of the blades, and preventing an increase in the torque of the motor. When viewed from the top, the fan-shaped blade is similar to the pulsator of the above-described embodiment (FIG. 6). However, when viewed from the lateral direction, the height of the blade is also substantially constant as the central force is applied to the outer peripheral portion, which is different from the present invention in which the height is increased toward the outer peripheral portion. In addition, since the fan-shaped divergence angle is significantly smaller than that of the present invention, and the blade size is also small, the circumferential inclination of the blade is steep. That is, when the pulsator of Patent Document 3 is rotated, the movement of the laundry is similar to that of the pulsator described with reference to FIG. 12, and the vertical movement of the laundry is almost the same. When pressed, it becomes a dumpling on the pulsator and fabric entanglement easily occurs. Therefore, even if the pulsator disclosed in Patent Document 3 is applied to a washing / drying machine, the same dry finish as that of the pulsator described with reference to FIG. 12 cannot be obtained.

The movement of the laundry and the washing action in the washing step will be described with reference to the schematic diagrams of FIGS. 14 and 15, taking the case of the pulsator 60 of FIG. 6 as an example. FIG. 14 shows the pulsator 60 deployed in the circumferential direction to show the vertical movement of the laundry 70 at each circumferential position on the pulsator 60. FIG. It shows the circumferential movement of the laundry 70 on the pulsator 60 when viewed from above. The principle of the movement of the laundry 70 at each position and the generation of detergency is as follows.

[0068] (1) A portion of the raised portion 74a (50d, 50e) climbing the circumferentially inclined surface (the position of (a) in Fig. 14 by repeatedly raising the laundry 70a with the downward force by the rising gradient of the raised portion 74a, The laundry 70a is repeatedly compressed to generate the detergency of the press washing action.

[0069] (2) A portion beyond the vertex of the raised portion 74a (the position (b) in Fig. 14)

The laundry 70b pushed upward by the upward slope of the raised portion 74a jumps up at a position beyond the raised portion 74a to form a gap between the laundry 70b and the raised portion 74a. At this time, The speed in the circumferential direction increases, and a gap is generated between the laundry adjacent in the circumferential direction (between the laundry 70a and the laundry 70b and between the laundry 70d and the laundry 70e). The high detergent concentration of the washing water that falls from above enters these gaps and effectively penetrates into the laundry 70. Therefore, even if the water level that does not exceed the upper surface of the pulsator 60 is maintained, the washing water spreads throughout the laundry 70.

[0070] (3) The partial force down the slope of the raised portion 74a is also the portion up to the valley portion 74d (50c) (the position (c) in FIG. 14).

The laundry 70c jumped up at the raised portion 74a generates the detergency of the push-wash and slap-washing action as the downward gradient force of the raised portion 74a also falls to the position of the valley 74d. At this time, a collision with the adjacent laundry 70d having a low circumferential speed occurs, and the washing power of the push-washing and slap-washing action is generated between the laundry 70 in front and rear of the circumferential direction. Further, the water seeps into the wash 70 and the water is pushed out together with the dirt.

(4) The part where the direction of the vertical movement of the laundry 70 is reversed (between (b) and (c) and between (c) and (a) in FIG. 14).

The direction of movement of the laundry 70b jumped up by the raised portion 74a, the falling laundry 70c, and the falling laundry 70c and the pushed up laundry 70a is opposite to each other, and the laundry is moved in opposite directions with both hands. A hand-washing hand-washing !, which works in the same way as a hand-washing hand-washing!

[0072] In order to maximize the above (1)-(4) washing action, it is desirable to set the rotation speed of the pulsator 60 to 130-140 rpm in a desirable size of the pulsator 60. If the rotation speed is lower than this, the movement of the laundry 70 may be small and the washing effect may be reduced. If the rotation speed is faster than this, the laundry 70 may not follow the vertical movement of the pulsator 60, and the movement of the laundry 70 may be small, and the washing effect may be reduced.

[0073] As described above, washing with a high detergent concentration while rotating the Norseta 60, and washing by circulating water, have three functions of pressing, tapping, and rubbing with very little washing water. At the same time, a high detergency is obtained by exerting a complex effect.

[0074] Such movement of the laundry 70 by the pulsator 60 is also suitable in the rinsing step. The The gap between the laundry generated by the splashing of the laundry facilitates the infiltration of the rinsing water and penetrates into the laundry 70, so that the washing water and the detergent components that have permeated into the laundry 70 are removed. Extrude with a similar effect to increase rinsing efficiency.

[0075] It is also suitable in the drying step. Since warm air enters the gaps between the laundry generated by the splashing of the laundry, the warm air spreads not only to the outer peripheral surface of the laundry but also to the inside of the laundry to promote moisture evaporation and dry. Increase efficiency. In addition, V with less cloth entanglement, the movement of the laundry realizes less wrinkles and drying.

Brief Description of Drawings

FIG. 1 is a schematic view showing one embodiment of a washing and drying machine according to the present invention.

FIG. 2 is a perspective view of a pulsator according to an embodiment of the present invention.

FIG. 3 is a diagram showing the movement of laundry on the pulsator, with the pulsator of FIG. 2 being deployed about half way around in the circumferential direction.

FIG. 4 is a longitudinal sectional view of a washing and dewatering tub 2.

FIG. 5 is a plan view of the washing and dewatering tub 2 taken along line BB in FIG. 4 and viewed from above.

FIG. 6 is a perspective view of a pulsator according to an embodiment of the present invention.

FIG. 7 is a view in which the panolesetter of FIG. 6 is developed about half a circumference in the circumferential direction.

FIG. 8 is a perspective view of a pulsator according to an embodiment of the present invention.

FIG. 9 is a diagram showing a shape of a norseater having three vertices.

FIG. 10 is a view showing a blade surface height in a circumferential direction of a pulsator.

FIG. 11 is a view showing the relationship between the inclination angle of the inclined surface, the vertical movement of the laundry, and the cloth entanglement in the pulsator of the present invention.

FIG. 12 is a perspective view of a pulsator for comparing shapes.

FIG. 13 is a cross-sectional view of the pulsator of FIG. 12 taken along the line AA in FIG.

[FIG. 14] FIG. 6 is a diagram showing the vertical movement of the laundry by developing the pulsator of FIG. 6 in the circumferential direction.

FIG. 15 is a view showing the circumferential movement of the laundry when the pulsator of FIG. 6 is also viewed from above. Explanation of symbols

[0077] 1 ... outer frame, 2 ... washing and dewatering tub, 4 ... pulsator, 4b ... inclined surface, 5 ... outer tub, 6 ... drive equipment 23, 25, 27 ducts, 24 cooling sprinklers, 26 fans, 29 heaters, 50 noreset, 50b``-S f®, 51 ·················· Nob

Claims

The scope of the claims

[1] A washing tub, a rotating body provided at the bottom of the washing tub, and an electric motor for driving the rotating body, wherein the rotating body causes the laundry to move vertically in the laundry by its rotating motion. A washing machine having an inclined surface to be provided.

2. The washing machine according to claim 1, wherein the inclined surface gives an upward movement while sliding the laundry when the rotating body rotates.

[3] The washing machine according to claim 1, wherein a diameter of the rotating body is 90% or more of an inner diameter of the washing tub, and the inclined surface is formed when the rotating body rotates. A washing machine for applying a centrifugal force to move laundry to an outer peripheral side of the rotating body and giving an upward movement to the laundry on the outer peripheral side of the rotating body while sliding the laundry on an inclined surface; .

[4] The washing machine according to [3], wherein when the rotating body stops rotating, the inclined surface slides the laundry downward on the inclined surface. .

[5] A washing tub, a rotating body provided at the bottom of the washing tub, and an electric motor for driving the rotating body, wherein the rotating body has an inclined surface toward the inside of the washing tub, The surface is formed such that the top and bottom of the rotating body at the top and bottom in the circumferential direction on the outer peripheral side of the rotating body gradually increase in height from the center of rotation of the rotating body toward the top, A washing machine characterized in that the top and the valley are formed such that the maximum force at the top and the circumferential length up to the lowest at the valley are longer than the height difference between the top and the valley. .

6. The washing machine according to claim 5, wherein one to three tops are formed in a circumferential direction on an outer peripheral side of the rotating body.

7. The washing machine according to claim 5, wherein two tops are formed in a circumferential direction on an outer peripheral side of the rotating body.

[8] The washing machine according to claim 5, wherein the inclined surface is formed by a flat surface.

[9] The washing machine according to claim 6, wherein the inclined surface is formed by a flat surface.

10. The washing machine according to claim 7, wherein the inclined surface is formed by a flat surface.

[11] The washing machine has a washing tub, a rotating body provided at the bottom of the washing tub, an electric motor for driving the rotating body, and a hot air circulation device for blowing hot air into the washing tub. A washing and drying machine characterized in that the body has an inclined surface that imparts vertical movement to the laundry during a drying operation by its rotational movement.

[12] The washing and drying machine according to claim 11, wherein the inclined surface gives an upward movement while sliding the laundry when the rotating body rotates during a drying operation.

13. The washing and drying machine according to claim 11, wherein a diameter of the rotating body has a size of 90% or more of an inner diameter of the washing tub, and the inclined surface rotates the rotating body during a drying operation. And applying a centrifugal force to move the laundry to the outer peripheral side of the rotating body, and giving the laundry an upward movement while sliding the laundry on the inclined surface on the outer peripheral side of the rotating body. Wash dryer.

[14] The washing and drying machine according to claim 13, wherein the inclined surface gives the laundry a downward slant when the rotating body stops rotating during the drying operation. Washing and drying machine.

[15] The washing machine has a washing tub, a rotating body provided at the bottom of the washing tub, an electric motor for driving the rotating body, and a hot air circulation device for blowing hot air into the washing tub. The body has an inclined surface toward the inside of the washing tub, and the inclined surface is formed on the outer peripheral side of the rotating body, and has a top portion whose height is higher in the circumferential direction and a valley portion whose height is lower in the circumferential direction. Is formed so as to gradually increase in height from the center of rotation toward the top. A washer / dryer formed so that the circumferential length of the washer is longer.

16. The washing and drying machine according to claim 15, wherein one to three tops are formed in a circumferential direction on an outer peripheral side of the rotating body.

17. The washing and drying machine according to claim 15, wherein two tops are formed in a circumferential direction on an outer peripheral side of the rotating body.

[18] The washing / drying machine according to claim 15, wherein the inclined surface is formed by a flat surface.

[19] The washing and drying machine according to claim 16, wherein the inclined surface is formed by a flat surface.

[20] The washing and drying machine according to claim 17, wherein the inclined surface is formed by a flat surface.