JP2010082087A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine with a compact drain conduit with a small number of components. <P>SOLUTION: The drain conduit 32 is cylindrical with the axis extending approximately in the horizontal direction, and has a drain valve 32d for opening/closing a drain 32c disposed in the middle of the drain conduit 32. A cylindrical overflow conduit connection part 33a to which an overflow conduit 34 is connected upward is disposed in an expanded part 32b on the downstream side from the drain 32c, and a cylindrical outside drain pipe connection part 33b to which an outside drain pipe 35 for draining to the outside of a washing machine body 28 is connected downward is also disposed in the expanded part. In the drum type washing machine, the overflow conduit connection part 33a and the outside drain pipe connection part 33b are integrally formed with the drain conduit 32 at a position where their center axes do not cross the axis of the drain conduit 32. With this structure, the drum type washing machine has the compact drain conduit with a small number of components. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine that performs rotation, washing, rinsing, and dewatering steps of a rotating drum that contains laundry.

  A conventional drum type washing machine of this type will be described with reference to FIG. The drum type washing machine 1 houses a rotating drum 2 in a water tank 3, and supports a rotating shaft 4 of the rotating drum 2 with a bearing 6 provided on the back surface of the water tank 3 and a drum driving motor 7 on the rotating shaft 4. Are connected. The aquarium 3 is disposed in the washing machine main body 8 so as to be inclined upward, and its weight is elastically supported by a pair of left and right vibration damping dampers 9 attached to the bottom of the washing machine main body 8. The front surface of the washing machine body 8 is provided with a lid 5 that opens and closes when the laundry is taken in and out of the rotary drum 2.

  Here, the water drained after the washing step is left and right in the drain pipe downstream from the drain port 12 opened and closed by a drain valve (not shown) in the drain pipe 10 disposed at the bottom of the water tank 3. There is known a drum-type washing machine that is bifurcated into two, one connected to an external drain pipe 13 and the other connected to an overflow pipe 14 (see, for example, Patent Document 1).

In addition, although there is an example in which this drain outlet 12 is disposed not at the water tank 3 but at the bottom of the washing machine body 8, the same applies.
JP 2005-137645 A

  However, in the configuration of such a conventional washing machine, there are many components, and particularly when it is disposed at the bottom of the washing machine main body, the vibration damping damper, the control board, the lint in the drainage liquid, and the like are collected. There is a collection box, etc., and a sufficient space cannot be secured, so it is necessary to construct a more complicated drainage pipe than necessary. As a result, the dewatering start-up performance from the foamed state is deteriorated due to the deterioration of drainage performance due to the increase in pipe resistance, the assembly workability and repair serviceability are reduced due to the increase in the number of parts, and the cost is further increased. There were many challenges.

  This invention solves the said conventional subject, and provides a drum-type washing machine provided with the drainage pipe line which is compact and has few components.

  In order to solve the above-described conventional problems, a drum-type washing machine of the present invention has a rotating drum formed in a substantially bottomed cylindrical shape, and the rotating drum is directed from the front side to the back side that is the bottom. A water tub disposed in the interior such that the rotation axis direction is horizontal or inclined downward from the horizontal direction, a washing machine main body elastically supporting the water tub, a motor for rotationally driving the rotating drum, and A drain line that communicates with the bottom and drains the wash water in the water tank, and is connected to a position at a predetermined height from the bottom of the water tank, and the wash water that is equal to or higher than the predetermined height is inserted into the water tank. An overflow pipe for draining, the drain pipe having a cylindrical shape with a central axis extending in a substantially horizontal direction, and having a drain valve for opening and closing a drain outlet provided in the middle of the drain pipe, In the adjacent area downstream from the drainage port, Provided with a cylindrical overflow pipe connection part to which the overflow pipe line is connected, and a cylindrical external drain pipe connection part to which an external drain pipe for draining outside the washing machine body is connected substantially downward. The overflow pipe connection part and the external drain pipe connection part are integrally formed with the drain pipe at a position where the central axis does not intersect the central axis of the drain pipe.

  As a result, the external drainage pipe and the overflow pipe are compactly gathered and joined around the drainage port, and can be configured with a small number of components and a small space.

  According to the present invention, the drainage pipe and the overflow pipe are compactly aggregated and joined to the drain outlet, and can be configured with simple and space-saving with a small number of components. A high-quality and low-cost drum-type washing machine can be configured without incurring and deterioration in assembly workability and repair serviceability due to an increase in the number of parts, and further without cost increase.

  According to a first aspect of the present invention, there is provided a rotating drum formed in a bottomed cylindrical shape, and the rotating drum is horizontally or downwardly inclined from the horizontal direction from the front side of the opening toward the back side of the bottom. And a washing machine body that elastically supports the water tub, a motor that rotationally drives the rotating drum, and drainage that drains the washing water in the water tub in communication with the bottom of the water tub. A drainage pipe that is connected to a position at a predetermined height from the bottom of the water tank and drains wash water of the predetermined height or more into the drainage pipe in the water tank; The central axis has a cylindrical shape extending in a substantially horizontal direction, and has a drain valve for opening and closing a drain port provided in the middle of the drain pipe, and the adjacent portion downstream of the drain port has a substantially upward direction. A cylindrical overflow pipe connecting portion to which the overflow pipe is connected And a cylindrical external drain pipe connecting portion to which an external drain pipe for draining outside the washing machine main body is connected in a substantially downward direction, the overflow pipe connecting portion and the external drain pipe connecting portion are: By forming the central axis integrally with the drainage pipe at a position where the central axis does not intersect the central axis of the drainage pipe, the drainage pipe and the overflow pipe are compactly aggregated and joined around the drainage port, and there are few configurations Since the parts can be configured simply and in a space-saving manner, there is no deterioration in drainage performance or overflow performance, and there is no deterioration in assembly workability or repair serviceability due to an increase in the number of parts, and there is no cost increase. High quality and low cost drum type washing machine can be realized.

  According to a second aspect of the present invention, particularly in the first aspect, the overflow pipe connection portion and the external drainage pipe connection portion have substantially the same diameter, the central axis thereof is substantially on the same line, and at least a part of the inner diameter portion thereof. Because it is configured to overlap with the inner diameter part of the adjacent part on the downstream side of the opening of the drain pipe, the drain pipe can be molded with a simple mold structure, and the overflow pipe connecting part and the outside Since the drain pipe connection part is approximately the same diameter and its central axis is substantially on the same line, there is little pipe resistance in the overflow pipe, the mold structure is simple, and it is not obstructed by the drain valve by shifting in a substantially horizontal direction Thus, the cross-sectional area of the overflow pipe line can be secured and a sufficient overflow flow rate can be obtained.

  In the third invention, particularly in the first or second invention, the inner diameter portion of the overflow pipe connection portion and the external drain pipe connection portion and the inner diameter portion of the adjacent portion on the downstream side of the opening of the drain pipe passage are over. The amount of wrapping is such that the opening area of the connecting opening is larger than the opening area of the opening of the drainage pipe, so that the pipe resistance of the drainage pipe that drains wash water from the aquarium is reduced. It is possible to secure a sufficient cross-sectional area of the drainage pipe and to obtain a sufficient overflow flow rate.

  In a fourth aspect of the present invention, in particular, in any one of the first to third aspects, foreign matter and lint in the washing water drained by a filter provided between the bottom of the aquarium and the drainage pipe and housed therein is collected. A recovery box, and the recovery box is formed integrally with the drainage pipe, so that the effects described above can be obtained with fewer components. realizable.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a drum-type washing machine according to the first aspect of the present invention, FIGS. 2 and 3 are partial configuration diagrams around a drain outlet in the drum-type washing machine, and FIG. 4 is a drainage in the drum-type washing machine. It is a fragmentary perspective view around a mouth.

  The drum type washing machine 21 houses a rotating drum 22 in a water tank 23, and supports a rotating shaft 24 of the rotating drum 22 with a bearing 26 provided on the back surface of the water tank 23 and a drum driving motor 27 on the rotating shaft 24. Are connected. The aquarium 23 is disposed in the washing machine main body 28 so as to be inclined upward, and its weight is elastically supported by a pair of left and right vibration damping dampers 29 attached to the bottom of the washing machine main body 28. In addition, a lid body 25 that opens and closes when the laundry is taken in and out of the rotary drum 22 is provided on the front surface of the washing machine main body 28.

  Further, one end of a bellows-like rubber hose 30 is connected to the bottom 23a of the water tank 23, and the other end of the rubber hose 30 contains a filter (not shown) inside and contains foreign matter in the washing water drained by the filter. It is connected to a collection box inlet 31a formed integrally with the back surface of the collection box 31 for collecting yarn waste. Further, a cylindrical drain pipe 32 having a central axis extending in a substantially horizontal direction (lateral direction as viewed from the front side of the drum type washing machine 21) is connected to a side surface of the collection box 31. The collection box 31 and the drain pipe 32 are integrally molded.

  The drain pipe 32 is provided with a small-diameter portion 32a connected to the recovery box 31 and a large-diameter portion 32b on the opposite side, and a connecting portion between the small-diameter portion 32a and the large-diameter portion 32b is a drain port (drain pipe). 32 openings) 32c. A drain valve 32d made of rubber or the like is provided inside the large diameter portion 32b and expands and contracts by driving a geared motor (not shown). In the state where the drain valve 32d is extended, as shown in FIG. 2, the drain port 32c at the connecting portion between the small diameter portion 32a and the large diameter portion 32b is closed. On the other hand, in the state where the drain valve 32d is contracted, as shown in FIG. 3, the drain port 32c at the connecting portion between the small diameter portion 32a and the large diameter portion 32b is open.

  On the other hand, one end of the overflow pipe 34 is connected to the front face 23b of the water tank 23 at a predetermined height position A from the bottom 23a of the water tank 23, and washing water having a predetermined height or more is supplied into the water tank 23. In this case, the overflowing washing water is overflowed into the overflow pipe 34 and drained.

  Further, the drain pipe 32 has a large diameter part 32b, which is an adjacent part on the downstream side of the drain port 32c, and an overflow pipe connecting part 33a extending in a substantially cylindrical direction, and a cylinder in a substantially downward direction. An extended external drain pipe connection portion 33b is provided. The other end of the overflow pipe 34 is connected to the overflow pipe connection part 33a, and an external drain pipe 35 for draining outside the washing machine body 28 is connected to the external drain pipe connection part 33b.

  The overflow pipe connection portion 33a and the external drainage pipe connection portion 33b have substantially the same diameter, the central axis thereof is substantially on the same line, the central axis does not intersect the central axis of the large diameter portion 32b, and the At least a part of the inner diameter portion is configured to overlap with the inner diameter portion of the large diameter portion 32b. With this configuration, the inside of the large diameter portion 32b is communicated with the inside of the overflow pipe connection portion 33a and the external drainage pipe connection portion 33b through the connection opening 33c. The overlap amount is set such that the opening area of the connecting opening 33c is larger than the opening area of the drain port 32c.

  The operation and action of the configuration around the drainage pipe 32 configured as described above will be described. The user opens the lid 25, puts the laundry into the rotary drum 22, closes the lid 25 again, and operates a start button (not shown) to start a series of washing.

  When the washing process starts, a water supply valve (not shown) is opened, and washing water is supplied into the water tank 23. At that time, even if the water supply valve does not stop due to a failure of the water supply valve even if the water level reaches the predetermined water level in the washing process, the washing water overflows from the overflow pipe 34 connected to the front surface portion 23b of the water tank 23. By exiting, the washing water is prevented from accumulating in the water tank more than a predetermined height from the bottom 23a of the water tank 23. The water overflowing through the overflow pipe 34 flows down from the overflow pipe connection part 33 b to the external drain pipe connection part 33 b directly below, further flows to the external drain pipe 35, and is drained outside the washing machine body 28. The At this time, since the external water pipe connecting portion 33a and the overflow pipe connecting portion 33b have substantially the same diameter and the central axis thereof is substantially on the same line, there is little pipe resistance, and the overflow pipe connecting portion 33a and the external drain pipe The connecting portion 33b is shifted to a position where the central axis thereof does not intersect with the central axis of the large diameter portion 32b, so that the pipe resistance is reduced by flowing through the side wall of the drain valve 32d in a state where the drain port 32c is closed. There is little and smooth drainage is possible.

  Moreover, after the water supply is normally completed and the washing process is executed, the draining process is executed. In this draining process, the drain valve 32d is contracted by driving a geared motor (not shown), and the drain port 32c is opened. As described above, when the drain port 32c is opened, the washing water in the water tank 32 flows into the collection box 31 through the rubber hose 30, and after the foreign matter and yarn waste in the washing water drained by the filter are collected, It flows into the small diameter portion 32 a of the drain pipe 32. Thereafter, the water passes through the drain port 32c, passes through the connecting opening 33c from the large diameter portion 32b, flows to the external water pipe connecting portion 33a, flows to the external drain pipe 35, and is drained outside the washing machine main body 28. At this time, since the opening area of the connecting opening 33c is larger than the opening area of the drain port 32c, the pipe resistance is small and smooth drainage is possible.

  With the above configuration, there is little pipe resistance of the drainage path and the overflow path, and each connection part can be compactly integrated in the peripheral part of the drainage port.

  As shown in FIG. 4, the configuration around the drainage pipe 32 can be integrally formed relatively easily. Therefore, with fewer components (low cost), drainage performance and overflow performance can be achieved. A high-quality and low-cost drum-type washing machine can be realized without causing deterioration, deterioration in assembling workability and repair serviceability due to an increase in the number of parts, and further without cost increase.

  In the first and second embodiments described above, the water tank is described as being disposed in the washing machine main body so as to be inclined upward, but the water tank is disposed in the washing machine main body in the horizontal direction. Even so, an equivalent effect can be obtained.

  As described above, the drum-type washing machine according to the present invention can be applied to applications such as general washing machines and dehydrators because a simple and compact drainage pipe can be formed.

Configuration diagram of drum-type washing machine in Embodiment 1 of the present invention Partial configuration diagram around the drain in the drum type washing machine Partial configuration diagram around the drain in the drum type washing machine Partial perspective view around the drain in the drum type washing machine Configuration diagram of a conventional drum-type washing machine

Explanation of symbols

28 Washing machine body 32 Drain pipe 32b Large diameter part 32c Drain port 32d Drain valve 33a Overflow pipe connection part 33b External drain pipe connection part 34 Overflow pipe 35 External drain pipe

Claims (4)

A rotating drum formed in a bottomed cylindrical shape, and the rotating drum are arranged inside such that the rotating shaft direction is horizontal or inclined downward from the horizontal direction from the opening front side to the bottom rear side. A water tank, a washing machine body that elastically supports the water tank, a motor that rotationally drives the rotating drum, a drain pipe that communicates with the bottom of the water tank and drains the washing water in the water tank, and the water tank An overflow pipe that is connected to a position at a predetermined height from the bottom of the water tank and drains wash water of the predetermined height or more into the drain pipe in the water tank, and the drain pipe has a substantially horizontal central axis. A drainage valve that opens and closes a drainage port provided in the middle of the drainage pipe, and the overflow pipeway is substantially upward in an adjacent portion downstream of the drainage port. While providing a cylindrical overflow pipe connection to be connected A cylindrical external drainage pipe connecting part to which an external drainage pipe for draining outside the washing machine main body is connected in a substantially downward direction is provided, and the overflow pipe connecting part and the external drainage pipe connecting part have a central axis thereof A drum type washing machine formed integrally with the drainage pipe at a position that does not intersect the central axis of the drainage pipe. The overflow pipe connection part and the external drain pipe connection part have substantially the same diameter, the central axis thereof is substantially collinear, and at least part of the inner diameter part is an adjacent part on the downstream side of the opening of the drain pipe The drum type washing machine according to claim 1, wherein the drum type washing machine is configured to overlap with an inner diameter portion. The amount of overlap between the inner diameter part of the overflow pipe connection part and the external drain pipe connection part and the inner diameter part of the adjacent part on the downstream side of the opening part of the drain pipe line is the opening area of the connecting opening part. The drum type washing machine according to claim 1 or 2, wherein the dimension is larger than an opening area of the opening of the road. A recovery box is provided between the bottom of the aquarium and the drain pipe to collect foreign matter and lint in the wash water drained by a filter housed inside, and the recovery box is integrated with the drain pipe. The drum type washing machine according to any one of claims 1 to 3.