KR20000004495A - Drum washing machine having water tank for midway dehydrating and washing method thereof - Google Patents

Abstract

PURPOSE: A drum washing machine is provided to improve the whole washing effect by improving the discharge efficiency of washing contamination. CONSTITUTION: A drum washing machine(1) having a washing container(7) horizontally arranged comprises: an assistant water tank(51) established on the upper board of the water tank(5); an inner supplying water pipe(53) having an assistant pump(65) established in the center, connected in the lower part of the water tank(5); an assistant supplying water pipe(54) connected with the outer supplying water source; a drain pipe(57) connected to the water tank(5).

Description

Drum type washing machine provided with water tank for intermediate dehydrating laundry and laundry washing method using that machine

The present invention relates to a drum washing machine, and more particularly, by installing a separate water tank at a position adjacent to the water reservoir, draining the wash water into the water tank temporarily at an intermediate point of the washing operation, and then performing intermediate dehydration again. A drum washing machine having an intermediate dewatering water tank for recovering the washing effect by forcibly removing contaminants in the laundry at the initial stage of washing by increasing the washing water from the water tank and continuously performing the remaining washing process. It relates to a washing method according to.

In general, a washing machine includes a pulsator type using water flow by rotation of a pulsator and a drum type using impact force due to vertical fall of laundry by rotation of a drum.

Among them, the drum washing machine is generally coaxially arranged with the reservoir 103, the reservoir 105 mounted inside the cabinet 103, and the reservoir 105, as shown in FIG. Cabinet 103 with a minimum shaking state of the washing tank 107 for washing the laundry put into the interior, the drive motor 113 and the reservoir 105 for rotationally driving the washing tank 107 by the belt 109 and the pulley 111. It is composed of a suspension device consisting of a spring 115 and a damper 117 to support), and other devices for drainage and water supply and various connection devices are additionally attached.

The front side of the washing tank 107 is provided with a door 121 which is connected in a watertight state by the door bellows 131 for access to the laundry, and the drum slide 123 is integrally attached to the rear of the washing tank 107. The rotary shaft 125 of the washing tub 107 protrudes and is rotatably supported by the bearing 127 on the bearing housing 129 on the central portion of the drum slide 123.

A plurality of lifts 119 are attached to the inner circumferential surface of the washing tank 107 to lift the laundry upwards as the washing tank 107 rotates forward and backward, and a drain hose 133 on one side of the bottom surface of the storage tank 105. Is connected to the drain pump 135 operates to drain the wash water is finished.

In general, the conventional drum type washing machine 101 having the configuration as mentioned above is to wash the laundry through the following process.

First, when the laundry is put into the washing tank 107 and the washing machine 101 is operated, after the water is supplied to the washing tank 107 through the water supply valve and a predetermined quantity is supplied, the washing water is heated by the heater 112 and the motor ( 113 is driven, the generated rotational force of the motor 113 is the washing tub 107 via the motor pulley 137, drive belt 109, belt pulley 111, the rotating shaft 125 and the drum slide 123. Is delivered). When the washing tank 107 rotates by the rotational driving force transmitted in this way, the laundry in the washing tank 107 is lifted upward by the lift 119 protruding from the inner circumferential surface of the washing tank 107 and then falls downward again. Impingement on the wash water, the contaminants on the laundry by the impact force generated at this time will come off the laundry, washing is performed by repeating this falling motion several times.

The washing tank 107 repeats the forward and reverse rotation at a low speed, that is, about 50 to 55 rpm while the washing operation is performed, and when dewatering, the washing tank 107 rotates at a high speed, that is, at a speed of 800 to 1000 rpm. After exiting the reservoir 105 through a number of fine holes (not shown) formed in the circumferential wall of the washing tank 107 is drained out through the drain hose 133 by the pumping force of the drain pump 135.

At this time, during the washing process, rinsing, and dehydration process, the water storage tank 105 causes vibration in the longitudinal direction due to the drop impact of the laundry according to the rotation of the washing tank 107. In this case, the coil spring 115 uses its elastic force. The damper 117 minimizes the vibration of the washing machine 101 generated during washing by attenuating the vibration of the coil spring 115 and the vibration of the reservoir 105 itself according to the impact force. It is supposed to be.

As such, as a countermeasure for reducing vibration of the water storage tank 105 during washing, the conventional washing machine 101 includes a weight part 139 shown in detail in FIGS. 1 and 2 in addition to the spring 115 and the damper 117 as described above. I adopt it.

The weight portion 139 is in the form of an arc having the same radius of curvature as the reservoir 105 so as to be horizontally fixed on the reservoir 105 between the front and rear springs 115, as shown. It is made up of dense stone blocks that take up less space in the room and can exert its effect as a weight part.

Accordingly, even when the washing tank 107 rotates at a high speed during washing as well as during dehydration, even if the vibration amount of the storage tank 105 increases, the storage tank 105 is pressed by the weight of the weight part 139. And damping the vibration of the reservoir 105 only by relying on the damper 117 can more effectively mitigate the mechanical shock such as vibration generated in the reservoir 105 to achieve the quiet operation of the washing machine 101. there was.

By the way, the weight portion 139 of the washing machine 101 as described above is always attached to the washing machine 101, even though its effective use is limited to time dehydration to increase the overall weight of the washing machine 101 In addition to the inconvenience in production and use, there was a problem that the price of the washing machine is increased due to the separate production of the weight portion 139.

In addition, washing is performed through three steps of washing, rinsing, and dehydration. Therefore, the washing performance is improved only by the configuration of the washing machine itself before drastically increasing the washing time or the amount of detergent or adding physical and chemical treatment to the washing water. There was also a disadvantage that can not be expected.

Therefore, the present invention is devised to solve the problems and disadvantages of the conventional drum washing machine as mentioned above, by virtue of the use of the water reservoir in place of the block of stone used by weight, especially vibration caused by the washing tank is severely generated. Only when dehydration is performed, the reservoir acts as a weight part to reduce the weight when the washing machine is not in use, and stops the washing in the middle of the washing process and supplies the wash water to the auxiliary water tank through the internal water supply pipe for temporary storage. The purpose is to improve the overall washing effect by performing an intermediate dehydration stroke in the state so as to achieve the same effect as squeezing the laundry temporarily in the middle of the hand wash and then washing it again to increase the discharge efficiency of laundry contamination. have.

1 is a partially cutaway longitudinal sectional view showing a conventional drum washing machine.

FIG. 2 is a partial cutaway back view taken along line AA of FIG. 1; FIG.

3 is a partial cutaway longitudinal sectional view of the drum washing machine according to the present invention;

4 is a partially cutaway rear view taken along line AA of FIG. 3.

Explanation of symbols on the main parts of the drawings

1: drum washing machine 3: cabinet

5: reservoir tank 7: washing tank

9: belt 11: pulley

13: drive motor 15: spring

17: damper 25: rotation axis

33: drain hose 51: auxiliary water tank

53: internal water supply pipe 57: drainage pipe

65: auxiliary pump

In order to achieve the above object, the present invention provides a drum washing machine in which the laundry tank into which the laundry is put is arranged side by side, the auxiliary water tank is mounted on the upper end of the water tank in which the laundry tank is coaxially installed therein, and the auxiliary water tank. Is to provide a drum washing machine having an internal water supply pipe connected to a lower part of the reservoir and an auxiliary pump installed in the middle, an overflow pipe connected to the top, and a drain pipe connected to the reservoir.

In addition, the present invention in the washing method by the drum washing machine as described above, the initial washing administration to wash the laundry into which the washing administration is first put in the washing tank rotated at low speed with the washing water supplied from the water supply pipe, after this period of time elapses Intermediate drainage stroke that stops washing and drains the contaminated wash water through the internal water pipe through the pumping power of the auxiliary pump, and rotates the washing tank at high speed immediately before draining is completed to drain water from the laundry. It is intended to provide an intermediate dehydration washing method comprising an intermediate dehydration administration and a later washing administration to resume washing by supplying the wash water stored in the auxiliary water tank to the reservoir through the internal water supply pipe after the dehydration is completed in this stroke.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 and 4, the drum washing machine 1 according to the present invention has an exterior cabinet 3, a washing tank 7 into which laundry is put, and a storage tank 5 in which washing water is filled, similar to a conventional drum washing machine. And a suspension device for attaching and supporting the drive motor 13 and the reservoir 5 to the cabinet 3 to generate the driving force of the washing tank 7 as a basic configuration.

Here, the washing tank 7 is provided with a door 21 for injecting laundry in the front, which is connected to the cabinet 3 in a state of maintaining watertightness by the door bellows 31. . The rotating shaft 25 protruding from the rear side of the washing tank 7 is supported by the water storage tank 5 so as to be rotatable by the bearing 27 mounted on the bearing housing 29, and the belt pulley 11 attached to the end thereof. The rotating force of the drive motor 13 is transmitted by the belt 9 wound on the belt 9 to rotate the washing tank 7 in the forward and reverse directions.

A plurality of lifts 19 are attached to the inner circumferential surface of the washing tank 7, and a drain hose 33 is connected to the bottom surface of the water storage tank 5, and a drain to extract the washing water in the middle of the drain hose 33. The pump 35 is provided.

Here, the water tank (5) surrounding the washing tank (7) is stored in the wash water supplied through the detergent container (16) through the water supply pipe (10) to the spring (15) or damper (17) attached to the outer peripheral surface It is supported on the inner surface of the cabinet (3), wherein the auxiliary water tank (51) is attached between the front and rear springs (15) of the upper surface of the reservoir (5) by means of attachment such as welding (61), Accordingly, the auxiliary water tank 5 may be injection molded integrally with the reservoir 5.

The auxiliary water tank 51 is designed to occupy the maximum possible space between the upper surface of the cabinet 3 and the upper surface of the reservoir 5 in order to maintain the maximum amount of water stored therein. At the same time, the lower surface is curved at the same curvature as the upper surface of the water storage tank 5 as in the weight part used in the conventional drum washing machine in order to maintain a more stable mounting state.

The auxiliary water tank 51 is also connected to the lower part of the water storage tank 5 by an internal water supply pipe 53, and in the middle of the internal water supply pipe 53 is laundry water temporarily drained from the water storage tank 5. An auxiliary pump 65 for pumping the tank 51 is provided. When the amount of water that is drained and pumped from the reservoir 7 by the internal water supply pipe 53 and the water supplied from the auxiliary water supply pipe 54 is excessively exceeded the full water level on the upper surface of the auxiliary water tank 51. An overflow pipe 55 for discharging this to the outside is connected, and a drain pipe 57 for opening and closing the wash water stored therein to the water storage tank 5 while being opened and closed by an opening / closing valve (not shown) on the lower inner surface thereof. It is connected.

In addition, in the auxiliary water tank 51, the water supplied by the pumping force of the auxiliary pump 65 is pumped from the water storage tank 5 or water supplied from an external water supply source to the full water level and reaches a maximum weight. It acts as a weight part as a vibrating resistor that suppresses the vibration of the remaining reservoir 5 without being attenuated by the suspension device such as the spring 15 or the damper 17 by pressing.

According to the drum washing machine 1 of the present invention configured as described above, the washing cycle S1, the rinsing stroke S2 and the dehydration stroke S3 are completed as in the conventional drum washing machine. In the washing operation S1, the operation switch is turned on according to a user's selection, and the operation of the washing machine 1 is started.

At this time, the driving motor 13 is rotated and the generated rotational driving force is transmitted to the rotating shaft 25 through the belt 9 and the belt pulley 11. Due to the rotational force transmitted, the washing tank 7 rotates in the water storage tank 5, and thus, the laundry introduced into the washing tank 7 repeatedly moves up and down, and the washing is performed by the collision with the washing water.

Thus washing stroke (S1) performed in the same manner as a general drum washing machine is again divided into an initial washing stroke (S11), an intermediate drainage stroke (S12), an intermediate dehydration stroke (S13) and a late washing stroke (S14), These detailed strokes are explained one by one.

First, in the initial washing operation (S11), as in the general washing administration, the washing water supplied from the external water source through the water supply pipe (10) and the detergent supplied directly from the washing tank (16) or directly supplied by the user through the water supply pipe (10) 5) and the washing tank 7 is rotated forward and backward at low speed to perform washing. The only difference from the conventional washing operation is that the washing time is shortened to about 1/3, for example.

When the initial washing operation (S11) is finished within a short time, the washing stops and the auxiliary pump 65 is operated to wash the water containing the contaminants initially removed from the laundry through the internal water supply pipe (53). Perform an intermediate drain stroke (S12) to be temporarily drained by the).

When the intermediate drainage is completed, the rotational force of the washing tank 7 is increased at a high speed to perform an intermediate dehydration stroke (S13) which partially drains the laundry by centrifugal force. The same effect allows a much higher cleaning effect compared to a conventional washing process consisting of washing, rinsing and dehydrating strokes.

When the intermediate dehydration stroke (S13) is finished, the auxiliary washing tank 51 is opened to supply the wash water stored therein to the water storage tank 5 again through the internal water supply pipe 53 to continue washing. (S14).

In this way, when the washing stroke (S1) is finished, one cycle of washing is finished through the normal rinsing stroke (S2) and dehydration stroke (S3). In this case, even if the washing time is slightly delayed before entering the rinsing cycle (S2), the washing efficiency may be further increased by repeatedly performing the intermediate dehydrating stroke (S13) and the later washing stroke (S14).

In addition, before performing the dehydration stroke (S3) the auxiliary water tank (51) to the water supplied through the auxiliary water pipe (54) from the rinsing water or the external water source to the rinsing water pumped from the water tank (5) through the internal water supply pipe (53) By filling it up, the vibration of the reservoir 5 generated during dehydration can be suppressed to the maximum by the auxiliary water tank 51 of the weight.

As described above, according to the drum washing machine of the present invention, the laundry administration which generally consists of one stroke is divided into an initial washing stroke, an intermediate drainage stroke, an intermediate dehydrating stroke, and a late washing stroke to temporarily dehydrate laundry in the middle of washing. By doing so, the effect of squeezing the laundry by hand-washing can be quickly removed from the laundry, thereby increasing washing efficiency and shortening the washing time.

In addition, by filling a large amount of water up to the full water level in the auxiliary water tank installed on the top of the reservoir when dewatering, the auxiliary water tank can also function as a weight part to minimize the vibration generated from the reservoir to provide convenience for use. In addition, since there is no need to employ a separate weight part, the inconvenience caused by the weight of the washing machine can be considerably reduced at the time of manufacturing, transporting or storing the washing machine. In addition, since the burden of cost increase due to the separate production of the weight part can be eliminated in advance, a cheap washing machine can be manufactured.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (3)

In the drum washing machine (1) in which the laundry tank (7) into which the laundry is put is arranged side by side, an auxiliary water tank (51) is mounted on the upper end of the storage tank (5) in which the laundry tank (7) is installed coaxially therein. The auxiliary water tank 51 is connected to the lower portion of the water reservoir 5 and the internal water supply pipe 53 in which the auxiliary pump 65 is installed in the middle, the auxiliary water supply pipe 54 connected to the external water supply source, Drum washing machine characterized in that it is provided with a drain pipe (57) connected to the reservoir (5). The washing stroke (S1), the rinsing stroke (S2), and the dehydration stroke by the washing machine 7 into which the laundry is put and the drum washing machine 1 in which the washing tank 5 surrounding the washing tank 7 are arranged side by side. In the washing method for washing the laundry through S3), the washing stroke (S1) is the initial washing stroke to wash the laundry initially put in the washing tank (7) rotated at low speed with the washing water supplied from the water supply pipe (10) (S11) to stop the washing after the predetermined period of time (S11) to drain the washing water mixed with contaminants to the auxiliary water tank 51 through the internal water supply pipe 53 by the pumping force of the auxiliary pump 65 Intermediate drainage stroke (S12), the intermediate dewatering stroke (S13) to drain water from the laundry by rotating the washing tank 7 at high speed immediately before the drainage is completed in the stroke (S12), and dehydration in the stroke (S13) After the completion of the washing water stored in the auxiliary water tank (51) Washing method characterized in that it consists of a later washing stroke (S14) to be supplied again to the water reservoir (5) through the internal water supply pipe (53) to resume washing. The washing method according to claim 3, wherein in the dewatering stroke (S3), water is filled in the auxiliary water tank (51) to a full water level through an auxiliary water supply pipe (54) from an external water supply source.