JP2012130422A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine capable of supplying circulation water in the whole inside of a rotary drum and strengthening a washing or rinsing effect by an action of circulation water as far as possible.SOLUTION: In a washing machine having a circulation water channel by which a stored water W in a washing tub 2 is pressurized with a circulation pump 71 and returned into a rotary drum 3, a nozzle part 8 disposed at a peripheral upward border part of a front side opening 20 of the washing tub 2 and connected to a circulation pump 71 through a circulation water hose 72 is provided with a first jetting opening 85 opening toward the vicinity of an input port 30 of the rotary drum 3, and a second jetting opening 86 opening toward a bottom face of the rotary drum 3 to supply the circulation water jetted from the first and second jetting openings 85, 86 to the inside of the rotary drum 3 in a state of diffusing in an axial length direction.

Description

  The present invention relates to a washing machine including a circulation water channel for circulating and using stored water in a washing tub during a washing or rinsing operation.

  A drum-type washing machine that has been widely used in recent years supports a bottomed cylindrical laundry tub with one side opening sideways or obliquely upward, and a bottomed cylindrical rotation inside the laundry tub The drum is supported so as to be rotatable on the same axis. The rotary drum has an input port that opens on the same side as the opening of the washing tub, and the laundry is input into the rotary drum through the input port and immersed in the stored water inside the rotary drum. Washing (washing and rinsing) is repeated by repeatedly lifting and dropping by rotation, followed by dehydration and drying.

  Many drum-type washing machines of this type include a water supply channel that supplies water for washing or rinsing into the inside of the washing tub, and a circulation water channel that circulates and uses stored water in the laundry tub. (For example, see Patent Documents 1, 2, and 3). This circulating water channel is provided so as to branch off in the middle of the drainage channel connected to the drainage port opened at the bottom of the washing tub and return to the inside of the washing tub through the circulation pump. The circulation pump is driven during the washing or rinsing operation, and the stored water in the washing tub is sucked into the circulation pump and pressurized, and injected into the washing tub and the rotating drum through a nozzle provided at the end of the circulation water channel. Is done. By providing such a circulation water channel, the laundry can be wetted by the circulating washing water or rinsing water, and the washing or rinsing effect can be enhanced.

JP 2010-94227 A JP 2009-297139 A JP 2010-36016 A

  Now, in a washing machine equipped with a circulating water channel, in order to exhibit the above-described effects satisfactorily, it is necessary to distribute the circulating water sprayed from the nozzles well throughout the rotating drum. In the washing machine described in Patent Document 1, a circulating water discharge nozzle is attached to the upper part of the peripheral edge of the opening of the washing tub, and a diffusion plate is provided at the discharge port of the discharge nozzle so that the circulating water collides with the diffusion plate. It is spread and supplied into the rotating drum.

  According to this structure, circulating water can be expanded and supplied to the inside of a rotating drum in the circumferential direction. However, the laundry during the washing or rinsing operation may be widely distributed not only in the circumferential direction of the rotating drum but also in the axial length direction, and circulating water is applied to all the laundry thus distributed. It is difficult to obtain a satisfactory washing or rinsing effect.

  In the washing machines described in Patent Documents 2 and 3, the motor for driving the circulation pump provided in the circulation channel is a variable speed motor, and the rotation speed of the motor is set to, for example, the amount of the washing machine in the rotary drum. Accordingly, the speed is controlled so that the amount of circulating water and the injection speed are increased or decreased and supplied to the rotary drum.

  According to this configuration, since the injection speed is changed by increasing / decreasing the rotation speed of the motor, it is possible to cope with a state where the laundry is distributed in the axial direction inside the rotary drum. Control means, and there is a problem that the configuration becomes complicated, and when the speed control of the motor is repeated, the pressure on the discharge side of the circulation pump fluctuates, so each part of the circulation water channel on the upstream side of the circulation pump There is a risk that the deterioration of the seal provided in the plate will be accelerated, leading to water leakage.

  The present invention has been made in view of such circumstances. Circulating water can be supplied to the entire inside of the rotating drum, and the washing or rinsing effect by the action of the circulating water is enhanced as much as possible by a simple configuration. An object of the present invention is to provide a washing machine that makes it possible.

  A washing machine according to the present invention has a bottomed cylindrical shape, and is supported by a laundry tub supported on one side opening sideways or obliquely upward, a rotating drum that rotates in the laundry tub, and an interior of the laundry tub. A washing machine comprising a circulating water path that pressurizes the stored water by a circulation pump and returns the stored water into the rotating drum, and is provided at an upper peripheral edge of the opening, and circulating water supplied from the circulating water path is placed in the rotating drum. A nozzle portion for spraying, the nozzle portion opening toward the bottom of the rotating drum, a first spraying port opening toward the vicinity of the charging drum opening opening on the same side as the opening; And a second injection port.

  In the present invention, the circulating water circulating in the circulating water channel is injected from the first injection port provided in the nozzle portion toward the vicinity of the charging port, and is injected from the second injection port toward the bottom surface of the rotating drum. In addition, the circulating water is supplied into the rotating drum in a state of being diffused not only in the circumferential direction but also in the axial length direction, and evenly applied to the laundry in an appropriate distribution state in the rotating drum and washed by the action of the circulating water Or increase the rinsing effect.

  Further, in the washing machine according to the present invention, the nozzle portion is a recess formed by extending a part of an end wall that borders the opening of the washing tub inward and partitioning with a wall that rises at a circumferentially spaced position. And a lid that closes the opening side of the recess, the first injection port is formed by cutting out a part of the extension of the end wall, and the second injection port is: A gap is provided between the extended end of the end wall and the lid plate.

  In this invention, the nozzle part provided with the first and second injection ports is integrally formed by utilizing a part of the end wall of the washing tub provided so as to border the one side opening, and the lid is formed. The injection of circulating water diffused in the axial length direction is realized with a simple configuration that is simply added.

  In the washing machine according to the present invention, the first and second injection ports provided in the nozzle portion inject the circulating water into the rotating drum in a state of diffusing not only in the circumferential direction but also in the axial length direction. The present invention has an excellent effect such that the washing or rinsing effect can be enhanced by applying the circulating water evenly to the laundry in the rotating drum without depending on the increase / decrease control.

It is an external appearance perspective view of the washing machine which concerns on embodiment. It is a longitudinal cross-sectional view which shows schematically the internal structure of the washing machine which concerns on embodiment. It is an expanded sectional view of the vicinity of a nozzle part. It is a perspective view which shows the formation aspect of a nozzle part.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is an external perspective view of a washing machine according to the embodiment, and FIG. 2 is a longitudinal sectional view schematically showing an internal configuration of the washing machine according to the embodiment.

  As shown in FIG. 2, the washing machine according to the embodiment includes a washing tub 2 and a rotating drum 3 inside an outer box 1 constituting an exterior. The washing tub 2 is a large-diameter bottomed cylindrical body having an opening 20 on substantially the entire surface on one side, and a plurality of support legs 22 (only one is shown) erected on the bottom surface of the outer box 1, As shown in the figure, it is elastically supported in an inclined posture with the opening 20 obliquely upward.

  The rotating drum 3 is a bottomed cylindrical body having a slightly smaller diameter than the washing tub 2. A drum motor 4 for driving the rotary drum 3 is fixed to the center of the outside of the bottom surface of the washing tub 2, and the rotary drum 3 has an inlet 30 that opens to one side of the opening 20 of the washing tub 2. It faces the inside and is supported by being connected to the output shaft 40 of the drum motor 4 whose bottom protrudes inside the washing tub 2. The rotating drum 3 supported in this manner rotates coaxially within the washing tub 2 by driving the drum motor 4.

  A plurality of small-diameter water holes 32, 32... Are formed through the entire surface of the peripheral wall of the rotary drum 3. A plurality of baffles 33 extending in the axial length direction are provided on the inner surface of the peripheral wall of the rotary drum 3 so as to be equally spaced in the circumferential direction. In FIG. 2, a part of the water flow holes 32, 32... And two baffles 33, 33 positioned above and below are shown.

  An opening 12 that can be opened and closed by the front lid 11 is provided on the front surface (left side surface in FIG. 2) of the outer box 1 at a position facing the opening 20 of the washing tub 2. A space between the opening 12 of the outer box 1 and the opening 20 of the washing tub 2 is liquid-tightly sealed by a bellows 13 made of an elastic material such as rubber.

  As shown in FIG. 1, a door opening button 14 is provided near the front lid 11 on the front surface of the outer box 1. The front lid 11 is opened around the hinge provided in the lateral position by the operation of the door open button 14. Further, the front lid 11 is closed so as to close the opening 12 by pushing the reverse position of the hinge from the outside in a state where it is aligned with the opening 12 of the outer box 1.

  An operation panel 15 including operation keys for various operations and a display unit for various displays is provided at the upper part of the front surface of the outer box 1. The operation panel 15 is connected to an operation control unit 16 provided inside the outer box 1 and located inside thereof, and a washing operation, a rinsing operation, and a dehydrating operation, which will be described later, are performed according to the operation of the operation panel 15. Depending on the operation of the operation control unit 16, the operation is performed as an independent operation or a series of operations related to each other.

  The washing machine also includes a water supply channel that feeds water from the water supply source into the washing tub 2 before the washing or rinsing operation, a circulation channel that circulates the stored water inside the washing tub 2 during the washing or rinsing operation, and a washing machine. Or the drainage channel which drains the stored water inside the washing tub 2 outside the machine after the end of the rinsing operation is provided. The characteristic of this invention exists in the structure of a circulating water channel.

  The water supply path includes a water supply pipe 50, a water supply valve 51, and a connection pipe 52. As shown in FIG. 2, the water supply pipe 50 is provided inside the outer box 1 along the outer upper portion of the washing tub 2, one end of which is in communication with the inside of the washing tub 2, and the other end of which is a water supply. The outlet side of the valve 51 is connected. The connection pipe 52 is provided so as to protrude from the rear upper surface of the outer box 1, and is connected to the inlet side of the water supply valve 51 inside the outer box 1. The connection pipe 52 can be connected to a water supply source (water supply) through a pressure hose connected to a projecting portion to the outside of the outer box 1.

  The water supply valve 51 is an electromagnetic valve that is normally closed and opened in response to an operation command given from the operation control unit 16 during a washing or rinsing operation. When the water supply valve 51 is opened, the water supply valve 51 Water is supplied into the washing tub 2 through the connection pipe 52, the water supply valve 51, and the water supply pipe 50. This water supply also enters the rotary drum 3 through the water passage holes 32, 32..., And accumulates as stored water W at the bottom of the washing tub 2 and the rotary drum 3, as shown in FIG.

  The drainage channel includes a drainage pipe 60, a filter device 61, a drainage valve 62, and a drainage hose 63. The drain pipe 60 is connected to a drain outlet opened at the bottom of the washing tub 2 and extends downward, and is connected to the inlet of the filter device 61. The filter device 61 schematically indicated by a circular block in FIG. 2 has a known configuration in which a lint filter that captures fiber waste is accommodated and held in a cylindrical filter case. The filter device 61 has two outlets, and one outlet is connected to a drain hose 63 via a drain valve 62. The drain hose 63 is laid along the bottom surface of the outer box 1 and extends outside the machine.

  The drain valve 62 is an electromagnetic valve that is closed in response to an operation command given from the operation control unit 16 during the washing or rinsing operation. The stored water W in the washing tub 2 and the rotating drum 3 is drained out of the machine through the drain pipe 60, the filter device 61 and the drain hose 63 when the drain valve 62 is opened after completion of the washing or rinsing operation. The The filter device 61 captures and removes the fiber waste contained in the waste water, and prevents the fiber waste from being discharged out of the machine together with the waste water.

  The circulating water channel includes a circulating water pipe 70, a circulating pump 71, and a circulating water hose 72. The circulating water pipe 70 connects the other outlet of the filter device 61 to the suction port of the circulating pump 71. The circulating water hose 72 has one end connected to the injection port of the circulating pump 71 and extends upward through the front part of the washing tub 2, and the other end of the circulating water hose 72 is connected to the opening 20 of the washing tub 2. It is connected to a nozzle portion 8 provided at the periphery as described later.

  The circulation pump 71 is driven in accordance with an operation command from the operation control unit 16 during the washing or rinsing operation. By this driving, the stored water W in the washing tub 2 is sucked into the circulation pump 71 through the drain pipe 60, the filter device 61 and the circulation water pipe 70, pressurized in the circulation pump 71, and flows inside the circulation water hose 72. Reaches the nozzle portion 8 and is sprayed from the nozzle portion 8 to pour onto the laundry in the rotating drum 3. The injected water is sucked into the circulation pump 71 together with the stored water W in the washing tub 2 through the drain pipe 60, the filter device 61 and the circulation water pipe 70, and repeats circulation. The filter device 61 acts to prevent the fiber waste contained in the circulating water from being captured and removed and returned to the washing tub 2 and the rotating drum 3.

  FIG. 3 is an enlarged cross-sectional view in the vicinity of the nozzle portion 8, and FIG. 4 is a perspective view showing a mode of forming the nozzle portion. As shown in FIG. 3, an end wall 21 is provided at the front portion of the washing tub 2 so as to border the peripheral edge of the opening 20 on the same side. An inclined plate 80 that extends obliquely inward toward the inside of the washing tub 2 is continuously provided.

  The inclined plate 80 is provided over an appropriate circumferential length. Both end portions of the inclined plate 80 are partitioned by a partition plate 81 that rises substantially vertically, and a recess having the inclined plate 80 as a bottom is formed. The recess is closed in a liquid-tight state on the opening side by a cover plate 82, and as shown in FIG. 3, the nozzle chamber communicates with an introduction cylinder 83 integrally formed at a corresponding position of the front peripheral wall of the washing tub 2. Is forming. 4A shows a state where the lid plate 82 is attached, and FIG. 4B shows a state where the lid plate 82 is removed.

  As described above, the nozzle portion 8 is formed by connecting the nozzle chamber surrounded on all sides by the inclined plate 80, the partition plate 81, and the lid plate 82 to the outside of the washing tub 2 through the introduction tube 83. The circulating water hose 72 described above is fitted to the end of the introduction cylinder 83 outside the washing tub 2 as shown in FIG.

  As shown in FIG. 3, a guide plate 84 having a large inclination angle is connected to the tip of the inclined plate 80, and a part of the inclined plate 80 is notched at the boundary with the guide plate 84. In addition, the first injection port 85 is formed in the direction of inclination of the inclined plate 80. Further, as shown in FIG. 3, an appropriate gap is provided between the distal end portion of the guide plate 84 and the lid plate 82 that closes the recess having the inclined plate 80 as the bottom. A second injection port 86 is formed in the direction of the inclination.

  In addition, the 1st injection port 85 and the 2nd injection port 86 may be provided as an elongate hole which continues in the circumferential direction between the partition plates 81 of the both sides of the inclined plate 80, as shown in FIG. The plurality of holes arranged in the circumferential direction may be provided.

  In the nozzle portion 8 configured as described above, the circulating water flowing in the circulating water channel described above is introduced through the introduction tube 83 to which the circulating water hose 72 is connected. The circulating water hits the inclined plate 80 in the nozzle portion 8 and changes its direction, and a part of the circulating water is injected from the first injection port 85 that opens at the tip of the inclined plate 80. The remaining circulating water hits the guide plate 84 and changes its direction, and is injected from the second injection port 86 opened at the tip of the guide plate 84.

  Here, the injection direction of the circulating water from the first injection port 85 substantially coincides with the direction of the inclined plate 80 as indicated by the solid line arrow in FIG. 3, and from the second injection port 86. The direction in which the circulating water is injected substantially coincides with the direction of the guide plate 84 as shown by the broken arrows in FIG. The direction of such injection is similarly indicated by solid and broken arrows in FIG. 2, and the spray water from the first spray port 85 is sprayed downward from the position where the nozzle portion 8 is disposed. , And projected to the vicinity of the entrance of the rotary drum 3. On the other hand, the spray water from the second spray port 86 is sprayed from the position where the nozzle portion 8 is disposed toward the bottom surface of the rotating drum 3 because it is along the guide plate 84 which is larger than the tilt angle of the tilt plate 80. The

  Thus, the circulating water sprayed in two directions is diffused in the axial length direction of the rotary drum 3, and the first and second injection ports 85 and 86 are long holes in the circumferential direction. And is supplied to the entire area of the rotary drum 3.

  In the washing operation of the washing machine configured as described above, the front lid 11 is opened, the laundry is put into the rotary drum 3, the front lid 11 is closed, the water supply valve 51 is opened, and the washing tub 2 is opened. The washing water is supplied to the inside of the machine, and the drum motor 4 is driven to rotate the rotating drum 3 repeatedly at a low speed. Washing water is water in which an appropriate amount of detergent is dissolved. The detergent may be put together with the laundry from the inlet 30 at the front of the rotary drum 3, or is put into a detergent case arranged in the middle of the water supply pipe 50 and flows through the water supply pipe 52 as is well known. You may make it melt out into water supply.

  The washing water supplied in this manner is stored as the stored water W in the washing tub 2 and the rotating drum 3. When the rotating drum 3 rotates in this state, the laundry is placed on the inner peripheral surface of the rotating drum 3. It is lifted and dropped by the action of the projecting baffle 33, and is washed (tapped) by being hit against the inner peripheral surface of the rotating drum 3.

  The circulation pump 71 is driven during the above washing operation, sucks in the stored water W in the washing tub 2, pressurizes it, and sends it to the nozzle portion 8 through the circulation water hose 72. As described above, the nozzle portion 8 injects the wash water from the first and second injection ports 85 and 86 into the rotary drum 3 in a state of expanding in the circumferential direction and the axial length direction. The washing water sprayed in this way pours onto the laundry in the rotating drum 3 and acts to enhance the cleaning effect.

  The spray water from the nozzle portion 8 spreads not only in the circumferential direction but also in the axial length direction and is uniformly fed to the entire area inside the rotating drum 3, so that the laundry widely distributed inside the rotating drum 3 is It is possible to achieve a good cleaning effect.

  In addition, the valve which can adjust an opening degree is provided in each of the 1st, 2nd injection ports 85 and 86, and the supply state of the circulating water in the rotating drum 3 is controlled by controlling the opening degree of these valves. It is possible to change. For example, when there is little laundry in the rotating drum 3, this control increases the amount of water sprayed from the second injection port 86 relatively, and circulates water in the laundry concentrated on the bottom surface side of the rotating drum 3. If there is a lot of laundry, the amount of water sprayed from the first spray port 85 is relatively increased, and the circulating water is reliably applied to the laundry distributed in the front part of the rotary drum 3. Depending on the amount of laundry.

  In the washing machine, the washing operation is completed, the drain valve 62 is opened, the washing water in the washing tub 2 is drained, and the water supply valve 51 is opened to supply rinsing water containing no detergent. This is performed by rotating the rotary drum 3 at a low speed. The laundry in the rotating drum 3 is wetted by rinsing water, and is rinsed by repeatedly lifting and dropping in the rotating drum 3. Such a rinsing operation is usually carried out a plurality of times by replacing the rinsing water.

  The circulation pump 71 is also driven during the above-described rinsing operation, sucks and pressurizes the stored water W in the washing tub 2, and sends it to the nozzle portion 8 through the circulation water hose 72. The nozzle unit 8 injects rinsing water into the rotary drum 3. The rinsing water sprayed in this way pours onto the laundry in the rotary drum 3 and enhances the rinsing effect. The rinsing water sprayed by the nozzle portion 8 having the first and second spray ports 85 and 86 is fed into the rotating drum 3 in a state of spreading not only in the circumferential direction but also in the axial length direction. Laundry that is widely distributed inside can be reliably wetted, and the rinsing effect can be improved satisfactorily.

  In the above embodiments, the washing machine in which the washing tub 2 and the rotating drum 3 are supported in an oblique posture inclined with respect to the horizontal plane, that is, a so-called oblique drum type washing machine, has been described. The present invention can also be applied to a washing machine in which the washing tub 2 and the rotating drum 3 are supported in a horizontal position, that is, a so-called horizontal drum type washing machine, and the same effect can be obtained.

  Further, the oblique drum type washing machine and the horizontal drum type washing machine are generally configured as a washing / drying machine having a function as a drying machine. The present invention is also applied to this type of washing / drying machine. It goes without saying that is possible.

2 Washing tub 3 Rotating drum 8 Nozzle part 70 Circulating water pipe (circulating water channel)
71 Circulating pump 72 Circulating water hose (circulating water channel)
85 First injection port 86 Second injection port

The washing machine according to the present invention has a bottomed cylindrical shape, a washing tub supported with an opening on one side facing sideways or obliquely upward, a bottomed cylindrical shape, and an output shaft connected to the center of the bottom surface. a rotary drum rotating in the washing tub by driving the drum motor in a washing machine wherein the water stored inside the washing tub pressurized by a circulation pump and a water circulation passage for returning the rotary the drum, of the washing tub The nozzle is provided at an upper peripheral edge of the opening, and includes a nozzle portion for injecting the circulating water supplied from the circulation water channel into the rotating drum, and the nozzle portion of the rotating drum opens on the same side as the opening. It has a 1st injection port injected toward the vicinity of an insertion port, and a 2nd injection port injected toward the bottom face of the said rotating drum connected with the output shaft of the said drum motor, It is characterized by the above-mentioned.

In the present invention, the circulating water circulating in the circulating water channel is jetted from the first jet port provided in the nozzle portion toward the vicinity of the charging port on the peripheral surface of the rotating drum, and the drum is fed from the second jet port . and injected toward the bottom surface of the rotating drum which is connected to an output shaft of the motor, not only the circumferential direction but also Oite in the axial direction, the circulating water into the rotary drum in a state in which spread throughout the bottom from the peripheral surface Is applied evenly to the laundry in an appropriate distribution state in the rotating drum to enhance the washing or rinsing effect by the action of the circulating water.

Here, the injection direction of the circulating water from the first injection port 85 substantially coincides with the direction of the inclined plate 80 as indicated by the solid line arrow in FIG. 3, and from the second injection port 86. The direction in which the circulating water is injected substantially coincides with the direction of the guide plate 84 as shown by the broken arrows in FIG. The direction of such injection is similarly indicated by solid and broken arrows in FIG. 2, and the spray water from the first spray port 85 is sprayed downward from the position where the nozzle portion 8 is disposed. , it is injected near the entrance of the rotary drum 3. On the other hand, the spray water from the second spray port 86 is sprayed from the position where the nozzle portion 8 is disposed toward the bottom surface of the rotating drum 3 because it is along the guide plate 84 which is larger than the tilt angle of the tilt plate 80. The

Claims (2)

A washing tub that has a bottomed cylindrical shape and is supported with an opening on one side facing sideways or obliquely upward, a rotating drum that rotates in the washing tub, and water stored in the washing tub is pressurized by a circulation pump. In a washing machine comprising a circulating water channel that returns to the rotating drum
The rotating drum is provided at a peripheral upper portion of the opening, and includes a nozzle portion that injects circulating water supplied from the circulating water channel into the rotating drum, and the nozzle portion opens on the same side as the opening. A washing machine comprising: a first injection port that opens toward the vicinity of the charging port; and a second injection port that opens toward the bottom surface of the rotating drum.   The nozzle portion includes a recess formed by extending a part of an end wall that borders the opening of the washing tub inwardly and separated by a wall that rises at a circumferentially spaced position, and an opening side of the recess. The first injection port is formed by cutting out a part of the extension portion of the end wall, and the second injection port is formed by extending the end wall of the end wall and the lid. The washing machine according to claim 1, wherein a gap is provided between the washing machine and the board.

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