JP2014030466A - Drum type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum type washing machine which reduces noise during circulation of washing water.SOLUTION: A drum type washing machine includes: a water tub 3 which rotatably includes a cylindrical rotary drum 2 with a bottom; a motor 5 which rotationally drives the rotary drum 2; a circulation water path (A)13 which is provided in the inner face part of a cylindrical wall 40 of the water tub 3; and a circulation route 19 which communicates with the circulation water path (A)13 and which has a discharge port 14 for discharging washing water in the water tub 3 from a drum opening part 35. The circulation water path (A)13 has a circulation rib 20 in which the washing water in the water tub 3 propels along the circulation water path (A)13 when the rotary drum 2 rotates, and water is fed to the circulation route 19. The circulation rib 20, by having a linear rib (A)12 which is provided in the inner face part of the cylindrical wall 40 in such a manner that it faces substantially the same direction as the rotation center of the rotary drum 2 and a circular arc rib (A)11 which is continuously disposed at the linear rib (A)12 and which is recessed with respect to the counter-rotational direction of the rotary drum 2, can improve washing performance and rinsing performance and can reduce the noise during the circulation of the washing water.

Description

  The present invention relates to a drum-type washing machine for washing, rinsing, and dewatering laundry in a rotating drum that is rotatably included in a water tank.

  Conventionally, in this type of drum type washing machine, in order to efficiently infiltrate the washing water into the clothes in the rotary drum, a circulation path is provided, and the washing water is driven from the discharge port on the front side of the rotary drum by driving the rotary drum. The structure which injects into laundry has been proposed (for example, refer patent document 1).

  FIG. 6 shows a longitudinal sectional view of a conventional drum-type washing machine described in Patent Document 1. As shown in FIG.

  In FIG. 6, an outer tub 56 having a first opening 53a for entering and exiting clothes is supported in the casing 51 in a state inclined downward toward the back side by a suspension structure (not shown). The outer tub 56 includes a second opening 65a that opens in the same portion as the first opening, and a rotating drum 54 having a rotating shaft inclined in the horizontal direction or the horizontal direction. The rotating drum 54 is rotationally driven by a drive motor 57 provided on the outer bottom of the outer tub 56. In addition, water supply means 59 for supplying water into the outer tub 56 is provided.

  The outer tub 56 includes a water intake 60 into which washing water that rotates in the outer tub 56 in accordance with the rotation of the rotary drum 54, a first circulation water channel 62 that communicates with the water intake 60, and a second circulation channel 62. A circulation water channel 66, a third circulation water channel 67, a fourth circulation water channel 68, and a discharge port 72 that communicates with the other end of the circulation water channel and discharges washing water into the rotating drum are provided.

  Further, a hot water heater 50 for heating the washing water is provided at the bottom of the outer tub 56, and the drive motor 57, the water supply means 59, the hot water heater 50, etc. are controlled on the front surface of the upper portion of the casing 51 to wash and rinse. Control means 55 for sequentially controlling each process such as dehydration is provided.

  With the above configuration, during the rinsing process, the laundry is rotated by the drive motor 57 at a rotational speed (for example, 80 r / m) at which the laundry is stuck to the inner peripheral surface of the rotating drum 54 by centrifugal force. Is stirred by the action of pump blades of ribs (not shown) provided on the outer bottom of the rotating drum 54, taken into the water intake 60, and passes through the first to fourth circulation water channels 62, 66, 67, 68, It is discharged from the discharge port 72 into the rotary drum 54 with a high force. The discharged water is poured into the laundry every time the rotary drum 54 rotates, and the washing water generated by centrifugal force permeates through the laundry, thereby performing a so-called shower rinsing in which the detergent is removed.

JP 2007-105212 A

  However, in the conventional configuration, the structure becomes complicated and the configuration cost becomes expensive, and the circulation path changes from the bottom of the outer tank to the side surface at right angles, so that noise due to turbulent water flow is large. There was a problem.

The present invention solves the above-described conventional problems, and with a simple configuration, the change of the circulation path is moderated, the turbulent flow of water is suppressed, and the wash water is discharged into the rotating drum, whereby the wash water is circulated. An object of the present invention is to provide a drum-type washing machine that reduces the noise of the machine.

  In order to solve the above-described conventional problems, a drum-type washing machine of the present invention includes a bottomed cylindrical rotary drum having a drum opening, a water tank that rotatably includes the rotary drum, and the rotary drum. A motor that rotates, a circulating water path provided on the inner surface of the cylindrical wall of the water tank, and a circulation path having a discharge port that communicates with the circulating water path and discharges the washing water in the water tank from the drum opening, The circulation water channel has a circulation rib for propelling the wash water in the water tank along the circulation water channel and feeding the wash water to the circulation route when the rotating drum rotates, and the circulation rib is formed in the cylinder. A linear rib provided on the inner surface of the wall in substantially the same direction as the rotation center of the rotary drum, and an arc-shaped rib that is connected to the linear rib and is concave with respect to the counter-rotation direction of the rotary drum. It is what you have.

  As a result, the circulation path is formed as a smooth water channel, and the washing water is discharged into the rotating drum, thereby improving the washing performance and the rinsing performance, suppressing the turbulent flow of water, and reducing the noise during the washing water circulation. It is realized.

  The drum type washing machine of the present invention can improve the washing performance and the rinsing performance with a simple configuration, and can reduce the noise during the washing water circulation.

The longitudinal cross-sectional view of the drum type washing machine in Embodiment 1 of this invention (A) Perspective view of the water tank of the drum type washing machine, (b) Top view of the water tank of the drum type washing machine (A) The perspective view of the water tank of the drum type washing machine in Embodiment 2 of this invention, (b) The front view of the water tank of the same drum type washing machine The perspective view of the water tank of the drum type washing machine in Embodiment 3 of this invention The perspective view of the water tank of the drum type washing machine in Embodiment 4 of this invention Vertical section of a conventional drum-type washing machine

  A first invention includes a cylindrical rotating drum with a bottom having a drum opening, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, and an inner surface of a cylindrical wall of the water tank And a circulation path having a discharge port that communicates with the circulation water path and discharges the washing water in the water tank from the drum opening, and the circulation water path rotates when the rotating drum rotates. Washing water in the aquarium has a circulation rib for propelling the washing water along the circulation channel and feeding the washing water to the circulation route, and the circulation rib is substantially the same as the rotation center of the rotating drum on the inner surface of the cylindrical wall. The circulation path is formed as a smooth water channel by having linear ribs provided in the direction and arcuate ribs that are connected to the linear ribs and are concave with respect to the counter-rotating direction of the rotating drum. , Rotating washing water By discharging the ram, wash performance, to improve the rinsing performance, it is possible to reduce the noise in the wash water circulation.

  In the second invention, in particular, the circulation rib of the first invention is formed by a standing wall formed by connecting a part of the cylindrical wall in steps, thereby forming a circulation path as a smooth water channel. By discharging the washing water into the rotating drum, the washing performance and the rinsing performance can be improved, and the noise during the washing water circulation can be reduced.

In the third invention, in particular, the circulation channel of the first or second invention has a roof-like rib placed on the circulation rib, so that the washing water in the water tank is efficiently fed to the drum opening, Cleaning performance and rinsing performance can be improved, and noise during washing water circulation can be reduced.

  In a fourth aspect of the invention, the circulation path of any one of the first to third aspects of the invention has a substantially U-shaped curved portion that is curved from the circulating water channel toward the drum opening, By providing the discharge port at the tip, it is possible to accurately discharge the circulating water into the rotating drum, and to suppress the turbulent water flow and reduce the noise.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum-type washing machine according to the first embodiment of the present invention.

  In FIG. 1, a water tub 3 in which a rotating drum 2 into which laundry is put is rotatably included is rotatably supported by an elastic support mechanism 4 such as a spring.

  A rotation shaft (rotation center shaft) 7 is provided at the rotation center of the water tank 3, and a motor 5 provided on the rotation shaft 7 in the vicinity of the back side of the water tank 3 is provided via a driven pulley 8, a belt 10, and a motor pulley 9. The rotary drum 2 is rotationally driven by the motor 5.

  Further, the rotating drum 2 is disposed together with the water tank 3 so that the rotation axis direction is inclined horizontally or downward from the horizontal direction from the opening front side toward the bottom side.

  Control means 6 for controlling a series of processes such as washing, rinsing, dehydration, and drying and driving load means such as a motor 5 is provided at the lower front portion inside the housing 1.

  In addition, a circulation path 19 having a substantially U-shaped curved portion 36 having a discharge port 14 at the tip is formed on the front side of the water tank 3 toward the drum opening 35 at the front of the rotating drum 2. . As a result, the washing water is discharged from the upper side to the drum opening 35 from the discharge port 14 via the curved portion 36 of the circulation path 19 by the rotational drive of the rotary drum 2. The washing water discharge configuration will be described later with reference to FIG.

  Fig.2 (a) is a perspective view of the water tank of the drum type washing machine in the 1st Embodiment of this invention, FIG.2 (b) is a top view of the water tank.

  A circulation rib 20 is erected on the inner surface of the cylindrical wall 40 of the water tank 3, and the circulation rib 20 includes a linear rib (A) 12 substantially in the same direction as the rotating shaft 7 and the linear rib (A). 12 is formed of an arcuate rib (A) 11 that is concave with respect to the counterclockwise rotation direction a shown in the drawing of the rotary drum 2. That is, the arc-shaped rib (A) 11 is concave with respect to the counter-rotating direction of the rotating drum 2.

  With this configuration, the washing drum in the water tank 3 is driven to rotate in the rotation direction a by the motor 5 during the washing or rinsing process in which the washing water is stored in the water tank 3, so that the washing water in the water tank 3 is in the flow b. Thus, it is propelled in the rotation direction a.

  Then, the water flow b changes like a water flow c along the circulation water channel (A) 13 formed by the circulation rib 20 composed of the arc-shaped rib (A) 11 and the linear rib (A) 12, To the side. The washing water propelled to the front side is discharged from the discharge port 14 at the tip of the curved portion 36 of the circulation path 19 communicating with the circulation water path (A) 13 to the laundry in the rotary drum 2.

  At this time, the washing water flows smoothly without being disturbed by the arc-shaped rib (A) 11, the linear rib (A) 12, and the curved portion 36, so that the circulating noise is discharged. Reduced. In addition, since the ink is properly discharged to the laundry in the rotary drum 2, the washing performance is improved in the washing step, or the rinsing is promoted in the rinsing step.

  As described above, in the first embodiment, the linear rib (A) in the substantially same direction as the rotation axis direction and the linear rib (A) are connected to the inner surface of the cylindrical wall 40 of the aquarium and rotated. A circulating rib formed by an arc-shaped rib (A) that is concave with respect to the counter-rotating direction of the drum is provided to form a circulating water channel (A), and in the washing or rinsing step, the rotating drum is rotated in the rotating direction. The washing water is propelled along the circulation water channel (A) and is discharged into the rotating drum from the discharge port of the circulation route, thereby improving the washing performance and the rinsing performance, and the washing water circulation. Noise inside can be reduced.

(Embodiment 2)
Fig.3 (a) is a perspective view of the water tank of the drum type washing machine in the 2nd Embodiment of this invention, FIG.3 (b) is a front view of the water tank. The configuration other than the water tank is the same as in the first embodiment, and a description thereof is omitted.

  3A and 3B, a part of the cylindrical wall 40 of the water tank 33 is connected in a stepwise manner. For this reason, a standing wall is generated at the connecting portion of the difference. A step portion (A) 21 provided with a standing wall (A) 31 that opposes the counterclockwise rotation direction a shown in the drawing of the rotating drum 2 is formed, and the standing wall (A) 31 is a rotating shaft. 7 and an arcuate standing wall (A) 15 that is connected to the linear standing wall (A) 16 and is concave with respect to the rotational direction a of the rotary drum 2. And is formed. That is, the arcuate standing wall (A) 15 is concave with respect to the counter-rotating direction of the rotating drum 2.

  With this configuration, the washing drum in the water tank 3 is rotated in the rotation direction a by the motor 5 during the washing or rinsing process in which the washing water is stored in the water tank 3, so that the washing water in the water tank 3 is also rotated in the rotation direction a. The flow of the washing water is circulated by the standing wall (A) 31 formed by the arcuate standing wall (A) 15 and the straight standing wall (A) 16 of the step (A) 21. It changes along the water channel (B) 17 and is propelled to the front side of the water tank 33.

  The washing water propelled to the front side is discharged from the discharge port 14 at the tip of the curved portion 36 of the circulation path 19 communicating with the circulation water path (B) 17 to the laundry in the rotating drum 2.

  At this time, the washing water is smoothly circulated and discharged by the arc-shaped upright wall (A) 15, the straight upright wall (A) 16, and the curved portion 36, without disturbing the water flow. Noise is reduced. In addition, since the ink is properly discharged to the laundry in the rotary drum 2, the washing performance is improved in the washing step, or the rinsing is promoted in the rinsing step.

  As described above, in the second embodiment, the circulating water channel (B) has the straight upright wall (A) that opposes the counter-rotating direction of the rotating drum and is substantially in the same direction as the rotation axis direction, and the straight upright wall. (A) is formed in a standing wall (A) formed with an arcuate standing wall (A) that is concave with respect to the rotation direction, that is, the circulation rib is formed on the cylindrical wall 40. By forming with a standing wall that is generated by connecting a part of them in stages, the washing performance and the rinsing performance can be improved, and the noise during the washing water circulation can be reduced.

(Embodiment 3)
FIG. 4 is a perspective view of a water tank of a drum type washing machine according to the third embodiment of the present invention. The configuration other than the water tank is the same as in the first embodiment, and a description thereof is omitted.

  FIG. 4 shows a shape in which a roof-like rib is placed on the circulation rib in the first embodiment. Less than. This will be described in detail.

  On the inner surface of the cylindrical wall 40 of the water tank 43, an L-shaped circulation rib 18 formed in an L shape by a circulation rib and a roof-like rib is erected, and the L-shaped circulation rib 18 is connected to the rotating shaft 7. A linear rib (B) 23 in substantially the same direction, and an arc-shaped rib (B) which is connected to the linear rib (B) 23 and is concave with respect to the counterclockwise rotation direction a shown in the drawing of the rotary drum 2. ) 24, and a roof-like rib 25 that is placed on the linear rib (B) 23 and the arc-shaped rib (B) 24 and serves as a receiving port with respect to the rotation direction a. That is, the arc-shaped rib (B) 24 is concave with respect to the counter-rotating direction of the rotating drum 2.

  With this configuration, the washing drum in the water tank 43 is rotated in the rotation direction a by the motor 5 during the washing or rinsing process in which the washing water is stored in the water tank 43, so that the washing water in the water tank 43 is also rotated in the rotation direction a. The flow of the washing water is changed along the circulation channel (C) 22 formed by the linear rib (B) 23, the arc-shaped rib (B) 24, and the roof-like rib 25, and the water tank 43 It is propelled to the front side.

  The washing water propelled to the front side is discharged to the laundry in the rotating drum 2 from the discharge port 14 at the tip of the curved portion 36 of the circulation path 19 communicating with the circulation water path (C) 22.

  At this time, the washing water flows smoothly and is discharged without being disturbed by the arc-shaped rib (B) 24, the linear rib (B) 23, the roof-shaped rib 25, and the curved portion 36. Circulation noise is reduced. In addition, since the ink is properly discharged to the laundry in the rotary drum 2, the washing performance is improved in the washing step, or the rinsing is promoted in the rinsing step.

  As described above, in the third embodiment, the circulating water channel (C) is connected to the linear rib (B) and the linear rib (B) in substantially the same direction as the rotation axis direction, An arc-shaped rib (B) that is concave with respect to the counter-rotating direction, a linear rib (B), and a roof-shaped rib that is mounted on the arc-shaped rib (B) and serves as a receiving port with respect to the rotating direction. By adopting a configuration in which the L-shaped circulation ribs are formed upright, the washing performance and the rinsing performance can be improved, and the noise during the washing water circulation can be reduced.

(Embodiment 4)
FIG. 5 is a perspective view of a water tub of a drum-type washing machine according to the fourth embodiment of the present invention. The configuration other than the water tank is the same as in the first embodiment, and a description thereof is omitted.

  FIG. 5 shows a shape in which a roof-like rib is placed on the circulation rib in the second embodiment. Less than. This will be described in detail.

  In FIG. 5, the cylindrical wall 40 of the water tank 53 is formed with a step portion (B) 26 provided with a standing wall (B) 32 in the counterclockwise rotation direction a shown in the drawing of the rotary drum 2. The step portion (B) 26 includes a linear upright wall (B) 29 substantially in the same direction as the rotary shaft 7, and is connected to the linear upright wall (B) 29 with respect to the rotational direction a of the rotary drum 2. An arcuate standing wall (B) 30 having a concave shape and a roof-like rib (B) 27 extending on the inner peripheral wall on the small diameter side of the stepped portion (B) 26 so as to serve as a receiving port with respect to the rotation direction a. Is formed. That is, the arcuate standing wall (B) 30 is concave with respect to the counter-rotating direction of the rotating drum 2.

With this configuration, the washing in the state where the washing water is stored in the water tank 53, or the rinsing process,
By rotating the rotating drum 2 in the rotation direction a by the motor 5, the washing water in the water tank 53 is also propelled in the rotation direction a, and the flow of the washing water is a straight vertical wall of the step portion (B) 26. It changes along the circulation channel (D) 28 formed by (B) 29, the arcuate standing wall (B) 30, and the roof-like rib (B) 27, and is propelled to the front side of the water tank 53.

  The washing water propelled to the front side is discharged to the laundry in the rotary drum 2 from the discharge port 14 at the tip of the curved portion 36 of the circulation path 19 communicating with the circulation water path (D) 28.

  At this time, the washing water smoothly flows and is discharged by the arc-shaped standing wall (B) 30, the straight standing wall (B) 29, the roof-like rib (B) 27, and the curved portion 36 without disturbing the water flow. Therefore, the noise in circulation is reduced. In addition, since the ink is properly discharged to the laundry in the rotary drum 2, the washing performance is improved in the washing step, or the rinsing is promoted in the rinsing step.

  As described above, in the fourth embodiment, the circulating water channel (D) has the straight upright wall (B) that opposes the counter-rotating direction of the rotating drum and is substantially in the same direction as the rotation axis direction, and the straight upright wall. A standing wall (B) is formed with an arcuate standing wall (B) that is continuous with (B) and is concave with respect to the rotation direction, and a roof shape that serves as a receiving port with respect to the rotation direction on the standing wall (B). By adopting a configuration in which the rib (B) is placed and formed, the cleaning performance and the rinsing performance can be improved, and the noise during the washing water circulation can be reduced.

  As described above, the drum type washing machine according to the present invention has a simple configuration, can improve the washing performance and the rinsing performance, and can reduce the noise during the washing water circulation. It can be applied to the usage of washing machines.

DESCRIPTION OF SYMBOLS 1 Case 2 Rotating drum 3 Water tank 5 Motor 6 Control means 7 Rotating shaft 11 Arc-shaped rib (A)
12 Straight rib (A)
13 Circulating waterway (A)
14 Discharge port 15 Arc-like vertical wall (A)
16 Straight wall (A)
17 Circulating waterway (B)
18 L-shaped circulation rib 19 Circulation path 20 Circulation rib 23 Linear rib (B)
24 Arc-shaped rib (B)
25 Roof-shaped ribs 27 Roof-shaped ribs (B)
28 Circulating water channel (D)
29 Straight wall (B)
30 Arc-shaped standing wall (B)
31 Standing wall (A)
32 Standing wall (B)
35 Drum opening 36 Bending part 40 Cylindrical wall

Claims (4)

A cylindrical rotating drum with a bottom having a drum opening, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, and a circulating water channel provided on an inner surface of a cylindrical wall of the water tank A circulation path having a discharge port that communicates with the circulation water path and discharges the washing water in the water tank from the drum opening, and when the rotating drum rotates, the circulation water path causes the washing water in the water tank to flow. The circulation rib is propelled along the circulation channel and feeds wash water to the circulation channel, and the circulation rib is provided on the inner surface of the cylindrical wall in the substantially same direction as the rotation center of the rotating drum. A drum-type washing machine comprising: a linear rib; and an arc-shaped rib that is continuous with the linear rib and is concave with respect to the counter-rotating direction of the rotating drum. 2. The drum-type washing machine according to claim 1, wherein the circulation rib is formed by a standing wall generated by connecting a part of the cylindrical wall in a stepwise manner. The drum-type washing machine according to claim 1 or 2, wherein the circulation channel has a roof-like rib placed on the circulation rib. The said circulation path has the substantially U-shaped curved part curved toward the said drum opening part from the said circulating water channel, The said discharge port was provided in the front-end | tip of the said curved part. The drum-type washing machine according to Item.