KR20100079551A - A drum type washing machine - Google Patents

Abstract

PURPOSE: A drum washing machine is provided to improve washing performance with a less amount of water by directly supplying fluid to laundry with steam and circulating water which are guided in order to supply from the front to the inside of a drum. CONSTITUTION: A drum washing machine comprises a drum(30), a tub wherein the drum is rotatably installed and a front opening and an extension part(23a) are formed, an inlet part(130) which comprises an inlet hole communicating the inside and the outside of the tub and is formed in the extension part of the tub, and an inlet part hose which guides fluid in the outside of the tub. The extension part is projected to the front of the tub.

Description

Drum Washing Machine {A Drum Type Washing Machine}

The present invention relates to a washing machine for washing laundry.

In general, a washing machine includes a pulsator type washing machine and a drum washing machine, and there is also a combined washing machine that can perform drying as well as washing only.

In the drum washing machine, the tub is arranged horizontally, and the drum is also arranged horizontally therein. The laundry is placed inside the drum and tumbled and washed as the drum is pointed.

A water supply valve and a detergent box for storing detergent are connected to external water for supplying the wash water. Between the water supply valve and the detergent box and between the detergent box and the tub are connected to each other by a water supply hose or the like. Thus, the wash water supplied from the water supply valve is supplied into the tub via the detergent box.

The tub is connected to the water hose at the middle portion of the tub to receive the wash water as described above.

In addition, a circulation pump may be included to circulate the wash water contained in the tub. A circulation flow path is formed from the bottom of the tub to the top of the tub for circulation of the wash water as described above. Thus, as the circulation pump operates, the wash water under the tub is drawn out and pumped to the upper tub.

On the other hand, some conventional drum washing machines are equipped with a heater in the tub. The washing power is heated by using the heater and the washing power is improved by using the heated wash water. However, such a conventional washing machine has a drawback in that it takes a lot of energy because it has to heat a large amount of washing water in the tub.

There is a limit in terms of energy in heating the wash water in the tub to raise the laundry or its atmosphere temperature to a desired temperature. It is inefficient from an energy point of view to heat the entire water consumed for washing to raise it to the desired temperature.

Recently, a washing machine having a steam generator has appeared. Such a washing machine supplies steam into a tub or drum. Thus, not only the cleaning power was improved but also the energy efficiency was greatly improved.

One of the important factors with regard to the cleaning power is the laundry or its ambient temperature. Therefore, it is preferable to use a more efficient method among the methods which can raise laundry or the surrounding atmosphere to desired temperature.

In this respect, supplying steam inside the tub or drum is more energy efficient than heating the entire wash water. Rather than heating the entire wash water for washing, a small amount of water is steamed and sprayed directly onto the laundry, saving much energy.

In addition, since the steam is a high temperature there is an advantage that can further increase the temperature of the laundry or the atmosphere around the laundry. Thus, the cleaning power may be further improved.

An object of the present invention is to provide a new washing machine in which the supply structure for supplying steam or circulating water is completely different from the conventional one in relation to the structure of the tub.

Adopt a structure for supplying steam or circulating water from the tub front portion to perform the washing more effectively.

Washing machine according to the present invention, the laundry laundry is located; A tub having the drum rotatably received therein and having an extension protruding forward to form an opening for taking in and out of the laundry; An injection unit formed in an extension of the tub; And an injection part hose for guiding the circulating water or steam from the circulation pump or the steam generator to the injection part.

The injection portion may include an injection guide for guiding the circulating water or steam into the drum.

The injection unit may be located in front of the drum, and the steam or circulating water may be guided into the drum and supplied through the injection guide as described above. In particular, it may be directed to the laundry located under the drum.

In addition, the injection guide may be shaped so that the supplied fluid is spread as widely as possible.

The injection guide may include at least one partition plate for partitioning the flow path into two or more.

A gasket may be coupled to the extension of the tub. The gasket seals between the tub and the washing machine door to prevent washing water from leaking outside.

The injection part may include a connection part connected to the injection part hose outside the extension part of the tub. The connection part may be connected to the injection part hose by inserting into the injection part hose.

In addition, the connection part of the injection part may include a first connection part and a second connection part formed to be spaced apart from each other. The injection hose may include a first hose connected to the first connector and a second hose connected to the second connector.

The first hose may be connected to the circulation pump, and the second hose may be connected to the steam generator. Thus, steam may be supplied into the tub through the second hose through the first hose.

The steam generator may be provided to be controlled and operated directly by the controller of the washing machine. The steam generator may be connected to a water supply valve to receive water. The steam generator may be provided to heat steamed water to generate steam.

The injection part may be coupled to the tub after being made separately from the tub. To this end, an extension portion of the tub may be formed with an injection hole so that the injection portion is inserted and coupled.

In addition, the gasket coupled to the extension portion of the tub may be formed to extend between the inner surface of the extension portion and the injection portion. The injection portion may be coupled to the extension portion with a screw.

The injection part may include an injection guide positioned inside the extension part of the tub, and the injection guide may be screwed to the extension part while the gasket is disposed between the upper surface of the injection guide and the inner surface of the extension part.

In addition, the injection portion may be formed a departure prevention jaw to prevent the injection portion escapes to the inside of the injection hole formed in the extension portion.

On the other hand, the injection portion may be formed integrally with the extension portion. The connection portion of the injection portion may be integrally formed from the outer surface of the extension portion, and the injection guide of the injection portion may be integrally formed from the inner surface of the extension portion.

The tub may be plastic injection molded, and in this case, the injection portion may be integrally injection molded together and provided in the tub.

On the other hand, the washing machine according to the present invention, the rear opening is formed in the rear portion of the tub, the rotating shaft connected to the drum rear; Tub back wall through which the rotating shaft rotatably penetrates; A bearing housing including a bearing for rotationally supporting the rotating shaft; A rear gasket sealing between the rear opening of the tub and the tub back wall, the rear gasket having a corrugation portion to allow the tub back wall to move relative to the rear opening of the tub; A cushioning member for buffering the bearing housing; And the like may further be included.

Here, the tub may be fixedly installed in the washing machine. Unlike the prior art, the vibration of the drum is not buffered and supported by the tub, but is transmitted to the bearing housing through the rotating shaft to be supported by the shock absorbing member.

Since there is the rear gasket between the tub back wall and the rear opening of the tub, the vibration of the drum is not transmitted to the tub.

The present invention provides a washing machine having a new structure in which an injection portion is formed in an extension of a tub extending to the full length for taking in and out of laundry.

For example, when the steam or the circulating water is guided to the drum from the front side, the fluid is directly supplied to the laundry to obtain a good result in a small amount.

1 is a partial exploded perspective view of a washing machine according to an embodiment of the present invention.

The cabinet 10 including the front panel (not shown), the left panel 11, the right panel 12, the rear panel 13, and the bottom panel 14 forms the appearance of the washing machine.

A tub 20 is installed in the cabinet 10, and a drum 30 is rotatably installed in the tub 20.

The tub 20 accommodates wash water and flows into the drum 30 through a plurality of through holes formed in the drum 30.

The tub 20 includes a cylindrical outer tub 21 and a tub cover 23 coupled to the front of the outer tub 21. The rear opening 21a is formed at the rear surface of the outer tub 21.

In addition, the tub cover 23 includes an extension part 23a to a rim which protrudes forward and forms a front opening part for taking in and out of the laundry.

The extension part 23a is provided with a front gasket 150 for sealing between the tub 20 and a door (not shown).

The door is hinged to the front panel of the cabinet 10 to open and close the front opening formed in the extension 23a of the tub cover 23. Withdrawal of the laundry is made by opening and closing the door.

The drum 30 includes a cylindrical drum center 31, a drum front 34 coupled to the front of the drum center 31, and a drum bag 32 coupled to the rear of the drum center 31.

The drum 30 is a place where laundry is placed inside the laundry.

A plurality of lifts (not shown) are installed on the inner wall of the drum 30 to lift and drop the laundry.

The drum bag 32 is coupled to the spider 33 is connected to the rotary shaft 40. Thus, the drum 30 rotates together with the rotation of the rotation shaft 40.

The rotating shaft 40 is rotated and supported by the bearing housing 71 through the tub back wall 50. A bearing is installed inside the bearing housing 71 to support the rotating shaft 40.

In addition, a rear side of the bearing housing 71 is equipped with a motor (not shown), the rotary shaft 40 is directly connected to the motor.

The tub back wall 50 is installed in the rear opening 21a of the outer tub 21.

In addition, a rear gasket 60 is installed between the edge of the rear opening 21a and the tub back wall 50. The rear gasket 60 has a pleat in the middle, and the edge of the rear opening 21a and the outer circumference of the wing tub back wall 50 are maintained at sufficient intervals.

Thus, the movement of the tub back wall 50 is not transmitted to the outer tub 21.

The rear gasket 60 seals between the rear gasket 60 and the tub back wall 50 of the outer tub 21, and serves to allow the tub back wall 50 to move relative to the outer tub 21. .

The bearing housing 71 is connected to the left support bracket 72 and the right support bracket 73 which extend radially in both the left and right sides and then extend forward.

The left support bracket 72 and the right support bracket 73 extend forwardly under the tub 20 and are connected to the left elastic support member 82 and the right elastic support member 83, respectively.

The left elastic support member 82 and the right elastic support member 83 may be a cylindrical suspension having a spring installed therein in the form of a cylinder.

In addition, a rear elastic support member 81 is connected to a lower portion of the bearing housing 71. The rear elastic support member 81 may also be a cylindrical suspension.

The cylindrical suspension may include a cylinder and a piston sliding within the cylinder and a spring connected between the piston and the cylinder to cushion the movement of the piston. The cylinder may be made to slide with frictional resistance inside the cylinder. This will also have a damping function against vibrations.

The rear elastic support member 81, the left elastic support member 82, and the right elastic support member 83 form a triangle and are connected to the bottom panel 14 of the cabinet 10 to prevent vibration of the drum 30. Cushioning support.

When the left elastic support member 82 and the right elastic support member 83 are symmetrically disposed with respect to the rotation shaft 40, the elastic support members 81, 82, and 83 are all installed vertically. Can be.

The elastic support members 81, 82, and 83 are hingedly connected to the left support bracket 72, the right support bracket 73, and the bearing housing 71. Then, the bottom panel 14 of the cabinet may be connected via a rubber bushing or the like. That is, the elastic support members 81, 82, 83 may be fixedly connected to the rubber bushings, respectively, and the rubber bushings may be fixedly connected to the bottom panel 14 again. The rubber bushing allows to some extent the elastic support members 81, 82, 83 being rotated relative to the bottom panel 14 by its elastic deformation. Thus, the upper end of the elastic support members is allowed to be repositioned. The rubber bushing is buffered against the rotation or bending of the elastic support members 81, 82, 83. That is, the horizontal movement of the drum in the left and right directions and the front and rear directions is supported while being buffered by the rubber bushing.

In addition, a left damper 91 and a right damper 92 are installed between the support brackets 72 and 73 and the bottom panel 14, respectively. The left damper 91 and the right damper 92 are connected to the support brackets 72 and 73 and the bottom panel 14 by a hinge.

The left damper 91 and the right damper 92 are inclined with respect to the front-rear direction. The inclined direction is tilted forward in the drawing, but may be installed to tilt backward.

The left damper 91 and the right damper 92 are cylindrical dampers. The piston receives frictional resistance inside the cylinder and performs a damping function by sliding the cylinder inner wall.

Meanwhile, the water supply part 140 and the injection part 130 are formed in the extension part 23a of the tub cover 23. The water supply unit 140 is connected to the detergent box 120 through the water supply hose 121. The detergent box 120 is connected to a water supply valve (not shown) to receive water from an external water supply source.

The water supply unit 140 and the injection unit 130 is located in front of the drum (30). Thus, it is possible to supply water and steam or circulating water toward the inside of the drum 30 from top to bottom and from front to back. This supply direction helps to smoothly supply the fluid supplied to the inside of the drum (30).

2 to 6 will be described an embodiment of the injection unit 130.

An injection hole is formed in the extension part 23a of the tub cover 23, and the injection part 130 is inserted into and coupled to the injection hole. In FIG. 2, two injection holes are formed, and the injection unit 130 shown in FIGS. 3 to 4 is inserted into the injection hole.

The injection part 130 includes a connection part 132 and 133 and an injection guide 135. The connection parts 132 and 133 are exposed out of the extension part 23a, and the injection guide 135 is located inside the extension part 23a.

The connection parts 132 and 133 include a first connection part 133 and a second connection part 132 and are integrally formed with the injection guide 135.

The first connector 133 is connected to the circulation pump 110 through the first hose 111. Thus, water in the tub 20 pumped by the circulation pump 110 is supplied back into the tub 20 through the first hose 111 and the first connection portion 133 (see FIG. 1).

The second connector 132 is connected to the steam generator 100 through a second hose 101. The steam generated by the steam generator 100 is supplied into the tub 20 through the second hose 101 and the second connector 132 (see FIG. 1).

The injection unit 130 is made in the form as shown in FIGS. The first connector 133 and the second connector 132 are formed at the upper portion, and the injection guide 135 is formed at the lower portion so that the steam and the circulating water are directed into the drum 30.

The injection guide 135 is formed with a partition plate 136 to separate the steam and the circulating water. Thus, even if circulating water and steam are supplied at the same time, they can be supplied without mixing with each other.

The partition plate 136 is formed such that the portion of the injection guide 135 in which the circulating water is guided has a larger area than the portion in which the steam is guided. The circulating water is dispersed as widely as possible and can be dropped, and the steam can be supplied to the inside of the drum 30 by maintaining the discharged pressure as much as possible. The drum 30 may be rotated when the circulating water or the steam is supplied, and air may flow in the drum 30 by the rotation.

The air flow inside the drum 30 does not affect the circulating water, but because the steam is light, the air flow may be disturbed to be supplied to the inside of the drum 30. Therefore, the area of the portion where the steam is guided in the injection guide 135 is narrower.

Three injection grooves 134 are formed in the injection part 130 corresponding to the inner surface of the extension part 23a of the tub cover 23. This is for screw fastening. The fastening groove 134 is formed to protrude. The corresponding fastening groove formed in the extension part 23a of the tub cover 23 shown in FIG. 2 passes through the corresponding fastening groove 153 of the front gasket 150 shown in FIG. It is located to correspond to the groove 23b. A screw (not shown) is fastened toward the injection portion 130 from the extension portion 23a of the tub cover 23.

On the outer circumferences of the first connecting portion 133 and the second connecting portion 132, separation preventing jaws 132a and 133a are formed so as not to be separated from the injection holes formed in the extension part 23a.

The separation prevention jaw 132a and 133a makes it easier to screw the injection portion 130 into the extension portion 23a of the tub cover 23.

5 illustrates a state in which the injection part 130 as described above is coupled to the extension part 23a of the tub cover 23.

The front gasket 150 is installed at the extension part 23a of the tub cover 23, and the front gasket 150 is extended to be disposed between the injection part 130 and the extension part 23a. have.

The front gasket 150 is disposed between the extension part 23a and the injection part 130 to serve as a bushing. Thus, the injection portion 130 helps to remain firmly coupled to the extension (23a).

The front gasket 150 is extended to surround the injection guide 135 as shown in FIG.

On the other hand, as shown in Figure 5 the lower surface of the injection guide 135 is inclined downward toward the rear. This is to guide steam or circulating water into the drum 30.

7 to 9 illustrate another embodiment of the injection unit 130. FIG. 7 is a view of the tub cover 23 from the outside, FIG. 8 is a sectional view, and FIG. 9 is a view of the tub 20 toward the injection unit 130.

In this embodiment, the injection part 130 is formed integrally with the extension part 23a of the tub cover 23.

That is, the injection part 130 is formed together when the injection molding the tub cover 23 as a part of the tub cover 23.

As shown in FIG. 7, the first connection part 23d and the second connection part 23c of the injection part 130 protrude from the outer surface of the extension part 23a of the tub cover 23. The first connector 23d and the second connector 23c are hollow.

As in the case of the previous embodiment, the first connecting portion 23d is connected to the circulation pump 110 through the first hose 111. In addition, the second connecting portion 23c is connected to the steam generator 100 through the second hose 101.

The injection guide 23e extends inwardly of the tub cover 23 extension 23a as shown in FIGS. 8 and 9. The injection guide 23e also has a partition plate 23f.

The front gasket 160 is coupled to the extension portion 23a and includes a portion 164 extending to surround the bottom surface of the injection guide 23e. A more detailed shape of the front gasket 160 is shown in FIG.

An end portion of the extension part 23a is inserted into the front gasket 160 so that the front gasket 160 and the extension part 23a are coupled to each other. This combination is the same in the previous embodiment of FIGS. 2 to 6.

The foregoing embodiments are merely examples of the present invention and should not be construed to limit the claims thereof. Naturally, the present invention can be implemented in other forms as long as it falls within the scope.

1 is a partial exploded perspective view of a washing machine according to an embodiment of the present invention.

2 is a view of an embodiment of the injection unit from the outside of the tub.

3 is a perspective view of the injection unit of FIG.

4 is a front view of the injection unit of FIG.

5 is a cross-sectional view in which the injection unit of FIG. 2 is installed.

6 is a perspective view of the front gasket shown in FIG.

7 is a view of another embodiment of the injection unit from the outside of the tub.

8 is a cross-sectional view of the injection unit of FIG.

FIG. 9 is a view of the injection part of FIG. 7 seen from the inside of the tub. FIG.

Figure 10 is a partial perspective view of the front gasket shown in Figures 8-9.

* Description of the main parts of the drawing *

10 cabinet 20 tub

30: drum 40: rotating shaft

50: tub back wall 60: rear gasket

70: bearing housing assembly 80: elastic support member

90: damper 100: steam generator

110: circulation pump 120: detergent box

130: injection portion 140: water supply portion

150, 160: front gasket

Claims (13)

A drum in which laundry is located; A tub having the drum rotatably installed therein, the tub having an extension part protruding forward and forming a front opening part for laundry in and out; An injection part having an injection hole communicating the inside and the outside of the tub and formed in an extension of the tub; An injection part hose connected to the injection part to guide the fluid outside the tub; Drum washing machine comprising a. The drum washing machine according to claim 1, wherein the injection portion includes a connection portion connected to the injection portion hose outside the extension portion, and an injection guide portion bent to direct the fluid into the drum in the extension portion. The method of claim 2, wherein the connection portion is spaced apart from each other, the first connection portion and the second connection portion formed independently, the injection hose is a first hose connected to the first connection portion and a second hose connected to the second connection portion Drum washing machine comprising a. The drum washing machine according to claim 2 or 3, wherein the extension portion of the tub has a through groove, and the injection portion is inserted into and coupled to the through groove. The gasket of claim 4, further comprising a gasket coupled to the extension part, wherein the gasket extends to be disposed between the injection guide part and the inner surface of the extension part, and the injection guide part is screwed to the extension part. Drum washing machine, characterized in that. The drum washing machine according to claim 4, wherein the connection part has a coupling groove into which an edge of the through groove is inserted and coupled. The drum washing machine according to claim 2 or 3, wherein the injection portion is formed integrally with the extension portion. The drum washing machine according to claim 7, further comprising a gasket coupled to the extension part, wherein the gasket extends to surround a lower surface of the injection guide part. The drum washing machine according to claim 1 or 2, wherein the injection hose is connected to a steam generator or a circulation pump. The drum washing machine according to claim 3, further comprising a pump for extracting and pumping the washing water in the tub, generating a circulation pump connected to the first hose and a steam generator connected to the second hose. The tub of claim 1, wherein the tub has a rear opening at a rear portion thereof. A rotating shaft connected to the rear of the drum; Tub back wall through which the rotating shaft rotatably penetrates; A bearing housing including a bearing for rotationally supporting the rotating shaft; A rear gasket sealing between the rear opening of the tub and the tub back wall, the rear gasket having a corrugation portion to allow the tub back wall to move relative to the tub rear opening; A cushioning member for buffering the bearing housing; Drum washing machine further comprising. A drum in which laundry is located; Injection part hose connected to the steam generator or the circulation pump; A tub formed protruding from an outer circumferential surface and protruding from a hollow connection part connected to the injection part hose and an inner circumferential surface and integrally formed with an injection guide part bent such that steam or circulating water is directed into the drum; Drum washing machine comprising a. The pump of claim 12, wherein the injection part hose includes a first hose connected to the circulation pump and a second hose connected to the steam generator, and the connection part includes a first connection part connected to the first hose and the second hose. Drum washing machine comprising a second hose connected.

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