JPH0245092A - Drum type washing machine - Google Patents

Abstract

PURPOSE:To effectively utilize washing water and to easily execute the cleaning of a filter and the maintenance of clogging by forming the sucking-up part of the washing water in one edge part of a washing water passage, providing a flowing-in port to guide the washing water into a rotating drum in the other edge part near a laundry putting-in and out port and fitting a lint filter attachably and detachably to an entrance part. CONSTITUTION:Since a sucking-up part 7 of a washing water passage 6 rises up from a condition that the part 7 is positioned lower than a washing water level L by the rotation of a rotating drum 2, the washing water between the rotating drum 2 and an outer tank 1 is sucked up to the washing water passage 6. Then, since the sucking-up part 7 is positioned upward and a flowing-in port 8 is positioned downward, the washing water sucked up to the washing water route 6 flows down through this passage 6 and flows from the flowing-in port 8 through a lint filter 9 into the rotating drum 2. Since the circulating washing water flows from the flowing-in port 8 through the lint filter 9 into the rotating drum 2, lint mixed to the washing water can be caught, removed, cleaned and guided into the rotating drum 2. Thus, the washing water is effectively utilized and washing quality is improved.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a drum-type washing machine in which a rotating drum having an opening for loading and unloading laundry on the peripheral wall is housed in an outer tub.

[Conventional technology]

Traditionally, drum-type washing machines housed a double-supported rotating drum with a rounded peripheral wall in which many small holes were formed inside an outer tank with a laundry loading/unloading port at the top. A door is provided at the laundry loading/unloading port, and the door detects the position of the rotating drum and opens/closes the drum door at a position where the laundry loading/unloading port of the outer tub and the laundry loading/unloading port of the rotating drum are opposed to each other. There was something I did. In addition, as shown in Japanese Patent Publication No. 54-316633,
A washing water passage whose both ends communicate with the inside of the outer tank is provided outside the outer tank, and a lint filter is provided at the inlet of the washing water passage into the outer tank.
A known filter is known in which lint mixed in the washing water is collected and removed by the above-mentioned filter by circulating the washing water through a washing water passage.

[Problem to be solved by the invention]

Conventional drum-type washing machines are constructed as described above, and during washing, washing water only flows into and out of the rotating drum through small holes in the peripheral wall of the rotating drum, resulting in insufficient utilization of washing water. During washing (and in models equipped with a lint filter to collect and remove lint, the waste water from the outer tank is discharged outside the machine through the lint filter, so the lint collected in the lint filter is flushed away with the waste water. When the filter becomes clogged, drainage capacity decreases, and maintenance is also poor.This invention was made to solve the above-mentioned problems. At times, the washing water passage outside the small hole 9 allows the washing water between the outer tub and the rotating drum to flow into the rotating drum through the lint filter, making effective use of the washing water and improving the washing quality. To provide a drum-type washing machine whose filter is easy to clean and whose maintenance can be performed easily when the filter is clogged.

[Means to solve the problem] The drum-type washing machine according to the present invention has a washing water passage formed in the end wall of the rotating drum, and a washing water pumping part between the rotating drum and the outer tub formed at one end of this passage, An inlet for introducing the washing water into the rotating drum is provided at the other end of the washing water passage, and this inlet is arranged near the laundry inlet/outlet of the rotating drum, and a lint filter is installed at the inlet on the inner surface of the end wall. It is removably attached. [For production]

In the drum-type washing machine according to the present invention, during washing C1, the washing water passage provided in the end wall rotates as the rotating drum rotates, and the pumping part provided in this passage rotates from the lower part of the outer tank. When rotating upward, the washing water between the rotating drum and the outer tub is pumped up from the pumping section, and when the pumping section is positioned upward, the pumped washing water flows down the washing water passage from the pumping section. Washing water is introduced into the rotating drum from an inlet provided in this passage through a lint filter. This slit allows clean washing water with lint collected by the lint filter to be guided from the washing water passage into the rotating drum.
In addition, the amount of washing water that circulates through the rotating drum is large,
Washing water can be used effectively, and the laundry loading/unloading openings of the outer tub and rotating drum are made to face each other, the rotating drum is stopped, and the outer tub door and drum door are opened. The lint filter can be easily installed and removed by inserting your hand through the laundry opening.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. In FIG. 1, 1 is an outer tub, 2 is a rotating drum, and a peripheral wall 2a of the rotating drum 2, which has many small holes, has a laundry loading/unloading opening 3 provided at the upper part of the outer tub 1, and a laundry loading/unloading port facing the laundry loading/unloading opening 3. An outer tank door (not shown) is provided with an opening 4 and opens and closes the loading/unloading openings 3 and 4. A through-drum door 5 is provided. Further, on the outer surface of the rear end wall 2b of the rotating drum 2, a washing water guide 6 is sandwiched between the diameter of the rear end wall 2b, and the cross section utilizing this is formed into a rectangular tube shape or the like. As shown in FIGS. 2 to 5, the washing water passage 6 is provided with a pumping portion 7 at one wide end.
A pumping part 7 is opened between the outer tank 1 and the rotating drum 2. The other narrow end of the washing water passage 6 is communicated with the rotating drum z through an inlet 8, and a lint filter 9 is removably attached to the inlet 8. That is, as shown in FIG. 5, in the ring filter 9, the opening of the net bag-like filter body 9a is fixed to the mounting ring 9b, and the mounting ring 9b is in contact with the inner surface of the end 92b of the inlet 8. The attachment ring 9b and the attachment tube 10 are removably screwed into the holding tube 10 fixed thereto, and the attachment ring 9b and the attachment tube 10 are arranged at a position close to the laundry loading/unloading opening 4 of the rotary drum 2. In FIG. 1, 11 is a casing housing the outer tank 1, and 12 is a drum drive motor for rotating the rotary drum 2. Further, the configuration and basic operation of this embodiment other than those described above are the same as those of the conventional drum type washing machine described above. Next, the operation of this embodiment will be explained. As shown in FIG. 1, the rotating drum 2 is stopped at a position where the laundry loading/unloading port 4 faces the laundry loading/unloading opening 3 of the outer tub 1, and the drum door 5 is opened together with the outer tub door (not shown). In the state
Laundry is loaded into the rotating drum 2 through the laundry loading/unloading port 3°4. Next, a water supply mechanism (not shown)
Tap water is passed through a detergent box installed in the water supply mechanism, the detergent in this box is dissolved and used as washing water, and the washing water is transferred to outer tank 1.
A predetermined amount of water is stored inside the rotating drum 2 and the rotating drum 2, and the water supply is stopped. Next, the laundry loading/unloading ports 3 and 4 of the outer tub 12 rotating drum 2
By rotating the rotary drum 2 with the outer tank door and drum door 5 closed, washing is performed using the washing water stored in the outer tank 1. During this washing, the washing water between the rotating drum 2 and the outer tub 1 is introduced into the rotating drum 2 through the washing water passage 6 provided on the rear end wall 2b of the rotating drum 2. That is, by the rotation of the rotating drum 2 shown in FIG. 2, the pumping part 7 of the washing water passage 6 is raised from a position below the washing water level (L), and the gap between the rotating drum 2 and the outer tub 1 is increased. Pump up the washing water in the washing water passage 6 and
As shown in the figure, by placing the pumping part 7 upward and the inlet 8 downward, the washing water pumped into the washing water passage 6 flows down this passage 6, and the lint is released from the inlet 8. It flows into the rotating drum 2 through the filter 9. The washing water in the rotating drum 2 flows out between the rotating drum 2 and the outer tub 1 through a large number of small holes provided in the peripheral wall 2a. Therefore, during washing, a part of the washing water flows from between the rotating drum 2 and the outer tub 1 to the washing water passage 6 and the rotating drum 2.
Circulation is made between the inner tank and the outer tank 1. Also,
The circulating washing water flows into the rotating drum 2 from the inlet 8 through the lint filter 9, and the lint mixed in the washing water is collected and removed by the filter 9, cleaned, and then transferred to the rotating drum 2. Guided within. Therefore, washing water can be used effectively to improve washing quality. After washing is finished, drain the washing water from the outer tub 1 and the rotating drum 2, and then use rinsing water such as tap water that does not contain detergent.
The water supply mechanism supplies water into the outer tub 1 and the rotating drum 2, rotates the rotating drum 2, and performs rinsing, which is the same as in conventional drum-type washing machines. Similarly, part of the rinsing water between the rotating drum 2 and the outer tub 1 flows from the washing water passage 6 through the lint filter 9 into the rotating drum 2 and returns between the rotating drum 2 and the outer tub 1. Since the rinsing water is circulated, phosphorus mixed in the rinsing water is also collected and removed by the filter 9. Note that after rinsing, a dehydration operation is performed in the same manner as in the conventional system. Further, after dehydration, hot air may be blown into the rotating drum to perform dehydration operation. In addition, if the lint filter 9 is clogged due to collecting a large amount of lint, as shown in FIGS. While the washing machine is stopped, insert your hand into the rotating drum 2 through the laundry loading/unloading ports 3 and 4, and turn the mounting ring 9b of the lint filter 9 to remove the ring 9b from the holding cylinder 10 fixed to the inner surface of the end Pi 2b. Remove the filter 9 from the machine and clean it, and then tighten the mounting ring 9b of the filter 9 to the holding cylinder 10 again. In this case, since the filter 9 is disposed at a position close to the laundry loading/unloading opening 4 in the upper part of the rotary drum 2, it can be easily attached and detached. In the above embodiments, the lint filter is attached to the rotating drum by screw fitting, but the present invention may be implemented by any means that allows the lint filter to be attached to and removed from the rotating drum. Further, in the above embodiment, the washing water passage is provided on the rear end wall of the rotating drum, but in the present invention, the washing water passage may be provided on the front end wall or both the front and rear end walls of the rotating drum. [Effects of the Invention] As explained above, according to the present invention, the drum door for opening and closing the laundry loading/unloading port provided on the peripheral wall of the rotating drum,
In a drum-type washing machine that detects the position of the rotating drum and is configured to open and close at a position where the laundry loading/unloading port provided at the top of the outer tub and the laundry loading/unloading port of the rotating drum face each other, the end wall of the rotating drum A washing water passage is formed in the washing water passage, and washing water between the rotating drum and the outer tub is pumped up from a pumping part provided at one end of the washing water passage by rotation of the rotating drum,
This washing water flows down the washing water passage, passes through an inlet provided at the other end, passes through a lint filter, and is guided into the rotating drum, making it possible to effectively utilize washing water and improve washing quality. In addition, since the lint filter is placed near the laundry inlet/outlet on the inner surface of the end wall, if the filter becomes clogged with collected lint, the filter can be easily attached and removed by inserting your hand through the laundry inlet/outlet. This has the effect of making maintenance easier.

[Brief explanation of the drawing]

FIG. 1 is a schematic front sectional view of a drum-type washing machine according to an embodiment of the present invention, and FIGS. 2 and 3 show the same operation when washing water is pumped into the washing water passage and when it flows into the rotating drum. FIG. 4 is an explanatory diagram of the operation of the lint filter mounting portion, and FIG. 5 is an enlarged side view of the lint filter mounting portion of FIG. 1, with a portion thereof in section. 1... Outer tank, 2. Rotating drum, 2a... Peripheral wall, 2
b... End wall, 3, 4... Laundry loading/unloading opening, 5...
- Drum door, 6... Washing water passage, 7... Pumping part, 8... Inlet, 9... Lint filter. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] An outer tub with a laundry loading/unloading port provided in the upper part, a rotating drum housed in the outer tub with the laundry loading/unloading port provided in the peripheral wall having a large number of small holes, and a laundry loading/unloading port provided on the rotating drum. Drum-type laundry, comprising a drum door that opens and closes, detects the position of the rotating drum, and opens and closes the drum door at a position where the laundry loading/unloading port of the outer tub and the laundry loading/unloading port of the rotating drum face each other. In the machine, a washing water passage is formed in the end wall of the rotating drum, a washing water pumping part between the rotating drum and the outer tub is formed at one end of the washing water passage, and a washing water passage is formed at the other end of the washing water passage. An inlet for introducing washing water into the rotating drum is provided, the inlet is placed near the laundry inlet/outlet of the rotary drum, and a lint filter is removably attached to the inlet on the inner surface of the end wall. A drum-type washing machine featuring