KR100287027B1 - Drum washer - Google Patents

Abstract

The present invention relates to a drum type washing machine aimed at low noise, and includes a washing tank (3) supported by a suspension (9) in an outer box (1) and a horizontal shaft center by a drive motor (21) inside the washing tank (3). Washing and dehydrating drum (5) rotatably controlled around (X) and a fluid balancer (45) provided around the washing and dehydrating drum (5), and the fluid balancer (45) is washed and dewatering drum Independently formed along the circumferential direction of (5) and having three to eight balance chambers (I, II, ...) in which a resistance plate 63 having a passage passage 65 is disposed therein, and a liquid moving. It consists of a continuous ring-shaped balance chamber 55 communicating with each of the balance chambers I, II, III ... through the holes 57, and the fluid of the fluid balancer 45 is connected to the communication hole 57. The resistance plate 47 is set between the balance chambers (I, II, III…) and the ring-shaped balance chamber 55 to a size that allows free entry and exit. Passing through the passage 65 and the communication hole (57) is characterized in that for performing the movement of the liquid.

Description

Drum Washing Machine {DRUM WASHER}

The present invention relates to a drum type washing machine aimed at low noise.

The outline of a general drum type washing machine is, for example, a washing and dehydrating drum which is rotatably controlled around a horizontal axis (X) inside the washing tank 103 supported by the suspension 101 ( 105 is disposed and the laundry 109 is configured to enter and exit from the front door 107.

The washing-and-dehydrating drum 105 is made so that the laundry 109 collects from the place where it rotates about the horizontal axis center X at the bottom as shown by gravity at the same time as the rotation of the washing-and-dehydrating drum 105 rotates. .

Therefore, when the washing process is completed, the dehydration process, the laundry is gathered at the bottom, because the high speed rotation in a state where the center is inclined a lot, a large unbalance occurs and the entire washing tank 103 is greatly vibrated. As a result, there was a problem that the vibration noise propagates outward. For this reason, the means for providing the ring-shaped fluid balancer 113 in which the liquid is sealed as shown by the broken line around the outer side of the washing-and-dehydrating drum 105 is already known.

The fluid balancer 113 acts on the resonance point of the rotational speed of the washing and dehydrating drum 105, and if it exceeds the resonance point, there is no unbalance due to the deflection of the laundry 109, thereby reducing the vibration. Works effectively. On the other hand, at the start of the operation at which the number of revolutions is equal to or less than the resonance point, since the liquid collects in the same direction as the unbalance due to the deflection of the laundry 109, that is, the laundry 109, the unbalance is increased. In addition, in the low-speed rotation, such as during the washing operation, because the liquid flows in the fluid balancer 113, the flow noise causes a problem that causes a noise.

The present invention relates to a drum type washing machine designed to reduce noise caused by vibrations and flow noises, and to improve the stirring efficiency of laundry during washing and drying.

1 is a schematic explanatory diagram of a drum type washing machine according to the present invention;

2 is a top perspective view of the fluid balancer;

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an explanatory view of a part of a balance chamber showing a communication hole;

5 is a cross-sectional view taken along the line B-B in FIG. 4;

6 is an enlarged view of a portion C of FIG. 1;

7 is an explanatory view showing an arrangement position of the baffle portion for stirring;

8 is an operation of the liquid in the washing, rinsing process;

9 is an operation of the liquid in the washing, rinsing process;

10 is an operation of the liquid in the washing, rinsing process;

11 is an operation of the liquid in the dehydration process;

12 is a schematic explanatory view of a drum type washing machine similar to FIG. 1 in which a fluid balancer is disposed before and after the inside of the washing and dehydrating drum;

FIG. 13 is an explanatory view of a fluid balancer before and after arranging the independent balance chambers in FIG. 12 so that their positions are shifted in the circumferential direction; FIG.

Fig. 14 is an explanatory diagram in which a fluid balancer having independent balance chambers arranged so as to be displaced in the circumferential direction has a double structure on the outside and inside;

15 is a schematic explanatory perspective view of the fluid balancer of FIG. 14;

16 is an explanatory view similar to FIG. 1 showing a conventional example.

* Explanation of symbols for the main parts of the drawings

1: outer box 3: washing tub

5: washing and dewatering drum 9: suspension

21: drive motor 45: fluid balancer

55: continuous balance chamber 57: communication hole

63: resistance plate 65: passage passage

III... Independent balance room

In order to achieve the above object, the present invention firstly, the washing tank, which is supported by the suspension in the outer box, the washing and dehydrating drum and the washing and dehydrating drum that is freely controlled around the horizontal axis by a drive motor inside the washing tank. A drum type washing machine provided with a fluid balancer, comprising: a plurality of balance chambers independently formed along the circumferential direction of the washing and dehydrating drum, and a continuous ring-shaped balance chamber connected to each of the balance chambers through a communication hole; The communication hole is set to such a size that the fluid contained in the fluid balancer can freely enter and exit between each balance chamber and the ring-shaped balance chamber during the washing rotation of the washing and dehydrating drum.

Secondly, a washing tank supported by a suspension in an outer box, a washing / dehydrating drum which is freely controlled about a horizontal axis by a drive motor at an inner side of the washing tank, and a fluid balancer installed around the washing / dehydrating drum. In a drum type washing machine, the fluid balancer is composed of three to eight balance chambers formed independently along the circumferential direction of a washing and dehydrating drum, and a continuous ring-shaped balance chamber connected to each of the balance chambers through communication holes. At the center of the balance chamber in the circumferential direction, and its minimum size shall be at least 5 mm.

In a preferred embodiment, the fluid balancer is arranged on the outlet side of the dry air.

Alternatively, the cross-sectional area of the continuous ring-shaped balance chamber is made larger than the cross-sectional area of the communication hole.

Alternatively, a resistance plate is provided inside each of the independent balance chambers, and the passage passage through the resistance plate is 5 mm or more.

Alternatively, a stirring baffle is installed on the inner circumferential wall of the fluid balancer.

Alternatively, the stirring baffle portion provided in the fluid balancer is disposed so as to deviate from the baffle portion provided in the peripheral plate of the washing and dehydrating drum in the circumferential direction.

In the drum type washing machine of the present embodiment, a peripheral plate of the washing and dewatering drum is attached to the outer circumferential wall of the fluid balancer, and the front plate of the washing and dewatering drum is attached to the side wall of the fluid balancer to serve as an attachment member.

Moreover, in the drum type washing machine of this embodiment, the washing tank supported by the suspension in an outer box, the washing-and-dehydrating drum rotated freely centering around a horizontal axis by the drive motor inside the washing tank, and the washing-and-dehydrating drum around it, In a drum type washing machine provided with a fluid balancer, the fluid balancer comprises a plurality of balance chambers formed independently along the circumferential direction of the washing and dehydrating drum and a continuous ring-shaped balance chamber connected to each of the balance chambers through communication holes. The fluid balancers are arranged in at least two locations, and one independent balance chamber is disposed so as to be displaced in the circumferential direction with respect to the other independent balance chamber.

According to such a drum type washing machine, when the rotation is slow, the liquid in each balancer chamber of the fluid balancer tries to flow downward by gravity due to the rotation of the washing and dehydrating drum, but at this time, the flow is blocked by the resistance plate. As a result, the flow noise is suppressed even at a rotational speed below the resonance point. In addition, each of the independently formed balance chambers accommodates almost the same amount of liquid and is displaced in the circumferential direction, so that the uniformity of the fluid is further improved and the flow sounds are continuous. The noise can be reduced.

Next, when dewatering operation enters the rotational speed above the resonance point, the liquid in each balancer chamber of the liquid balancer is subjected to the centrifugal force to gather on the opposite side to the washing of the laundry, so that the balancing action is performed and the vibration is suppressed small.

In addition, even in the fluid balancer region, the stirring baffle portion is made to stir laundry with good efficiency.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described concretely, referring drawings of FIGS.

In the figure, "1" shows an outer box which becomes a washing machine body, and in the outer box 1, a washing tank 3 serving as an outer tank, a washing and dehydrating drum 5 serving as an inner tank, and a drying wind through which drying air flows out. The circulation passage 7 is arranged.

The washing tub 3 is supported by a plurality of suspensions 9 provided on the bottom side. A water supply valve 11 is installed at the top of the washing tank 3 and a drain valve 13 is installed at the bottom, and the water can be supplied by salting the water supply valve 11 and washed by salting the drain valve 13. It is possible to drain the water.

The washing and dewatering drum 5 is rotatably supported by the drum shaft 17 serving as the horizontal axis X while being provided with a plurality of through holes 15 in the peripheral plate 5a serving as the outer peripheral surface. It is made so that the entry and exit of laundry can be performed by salting the opening / closing door 19 provided in the front panel of (1).

The drum shaft 17 is provided with rotational power from the driving motor 21 so that the transmission belt 27 is caught by the driving pulley 23 of the drum shaft 17 and the motor pulley 25 of the driving motor 21 to rotate. It is becoming.

The drive motor 21 is fixedly installed at the bottom side of the washing tub 3, and is configured to be rotationally controlled based on an instruction from the control unit 31 by turning on / off of each control switch 29.

The dry wind circulation passage 7 is formed by the duct 33, and the blower 35, the dehumidifier 37, and the heater 39 are respectively disposed inside. One of the first connection ports 33a of the dry air circulation passage 7 is connected to the dry air suction port 41 of the washing and dewatering drum 5. In addition, the second connection port 33b on the other side is connected to the dry wind outlet 43 of the washing and dehydrating drum 5, and the dry wind outlet 43 opens and closes the laundry when the opening and closing door 19 is opened. Consists of a shape that serves as.

The blower 35 is arrange | positioned in the area | region near the 2nd connection port 33b side, and the rotational power from the drive motor M is given to a fan, and it is made so that dry wind may flow forcibly like an arrow.

The dehumidifier 37 is disposed almost in the middle portion of the dry wind circulation passage 7 and functions to remove moisture from the dry wind upon passage.

The heater 39 is disposed in an area near the side of the first connection port 33a, and is managed at a predetermined temperature by a control unit other than the drawing, and functions to generate dry air.

On the other hand, inside the washing-and-dehydrating drum 3, the fluid balancer 45 of the upper and lower stages is provided in the exit side (left side of FIG. 1) of the drying air through which the dry air with low temperature which completed the operation flows.

Although the fluid balancer 45 is comprised by the structure of two upper and lower stages, since the structure is the same here, the fluid balancer 45 of an upper side is demonstrated with the same code | symbol.

The fluid balancer 45 is made of a synthetic resin, and at the same time has a structure that serves as an attachment member of the front plate (5b) constituting the washing and dewatering drum (5).

That is, as shown in Fig. 2, a plurality of balance chambers (I, II, in this embodiment) are formed by a partition plate 47 formed in a ring shape by a rectangular cross-section duct and disposed on a radiation beam at 60 degrees. III, IV, V, VI). At least three balance chambers are required and up to eight balance chambers are preferably installed.

Each of the balance chambers I, II, III, IV, V, and VI has an inner circumferential wall 49, an outer circumferential wall 51, left and right side walls 53 and 54, and a partition plate 47 as shown in FIG. It is formed into a separate room by), and liquids such as salt water are sealed inside. In addition, a continuous ring-shaped balance chamber 55 is provided on the side wall on the left side of the drawing, and each of the balance chambers I, II, III, IV, V, VI is continuous through the communication hole 57. It consists of a structure that is connected to the balance chamber 55 of the shape, as shown in Figure 6, the outer peripheral wall 51 is a screw 59 to the peripheral plate (5a) constituting the washing and dehydrating drum (5) It is fixed and supported by. Moreover, the front plate 5a which comprises the washing | cleaning and dehydration drum 5 is fixedly supported by the screw 61 at the side surface of the ring-shaped balance chamber 55 used as the left side wall of the fluid balancer 45. As shown in FIG. Thereby, the operation which welds and couples the peripheral plate 5a and the front plate 5b of the washing | cleaning and dehydration drum 5 can be abbreviate | omitted. In this case, a means for attaching the fluid balancer 45 behind the welded peripheral plate 5a and the front plate 5b may be used.

The communication hole 57 is formed in a round hole shape provided on the center line Y on the circumferential center near the outer circumferential surface of the side wall as shown in FIG. 4 and the minimum size of the hole diameter is set to 5 mm or more. It is. In addition, if the shape of the communication hole 57 is not specified as a round hole, and the minimum size of a hole diameter is 5 mm or more, you may employ | adopt a rectangle, a rectangle, a long hole, and a polygon, for example.

In the ballast chambers I, II, III, IV, V, VI, there is provided a resistance plate 63 which meets a pair of opposing pairs with the communication hole 57 therebetween. The resistance plate 63 has a passage passage 65 of 5 mm or more between the side walls 54 forming the balance chambers I, II, III, IV, V, VI, as shown in FIG. The liquid in each balance chamber I, II, III, IV, V, VI is made to move through the passage passage 65.

The continuous balance chamber 55 has a cross-sectional shape larger than the cross-sectional shape of the communication hole 57, and at the same time, an independent balance chamber (I, II, III, IV, V, It is formed by joining to one side wall of VI).

In addition, a plurality of baffles 67 for stirring laundry are provided on the inner circumferential wall of the fluid balancer 45 at predetermined intervals, the cross section of which is directed toward the inner center. As shown in FIG. 7, the stirring baffle portion 67 installed in the fluid balancer 45 includes a plurality of laundry stirring baffle portions 69 provided on the inner circumferential surface of the circumferential plate 5a of the washing and dehydrating drum 5. ) Is shifted at a predetermined angle.

Next, the operation will be described based on FIG. 8 to FIG. 11. First, in the low-speed rotation in the direction of the arrow by the washing rinsing step, in FIG. 8, the liquid in the balance chamber I is rotated at the lowermost portion of the communication hole 57 by the excess amount indicated by the dotted line in FIG. 9 accompanying the rotation. Move to the balance chamber (V, VI). Thereby, although the amount of liquid in the balance chamber V is small in FIG. 8, it is supplied by the liquid which overflowed from the other balance chamber in the state of FIG. In addition, although the amount of liquid in the balance chamber VI was larger than the prescribed amount in FIG. 8, it becomes the same amount as the balance chamber V in FIG. Similarly, in FIG. 10, excess liquid in the balance chamber III overflows and is supplied to the balance chambers IV and V. FIG. This series of steps is carried out incidentally when the washing and dewatering drum 5 is rotated at low speed such as during washing operation, and therefore, no special stroke is required. Therefore, this series of steps is continuously performed during the washing and rinsing operation, so that liquid is almost evenly formed in the six balance chambers (I, II, III, IV, V, VI) as shown in FIG. In this state, the amount of liquid in the continuous balance chamber 55 does not become zero. However, the amount of liquid in the continuous balance chamber 55 is relatively small. Therefore, the liquid in the balance chamber 55 moves relatively in the balance chamber 55 with the rotation of the washing and dehydrating drum 5. The liquid movement noise generated by the liquid is significantly smaller than that of the conventional fluid balancer. In addition, since the liquid in each of the independent balance chambers (I, II, III, IV, V, VI) moves through the passage passage 65 of the resistance plate 63, the flow sound reaching the partition plate 47 is shown in Table 1. As compared to the one without resistance plate

Condition noise No resistance plate 62 dB With resistance plate 52 dB

While being suppressed small, the stirring baffle portion 67 obtains a good stirring state of the laundry even within the region of the fluid balancer 45.

On the other hand, in the dehydration operation, the centrifugal force acts on the liquid in the fluid balancer 45 with the increase in the rotational speed of the washing and dehydration drum 5, and the liquid in the fluid balancer 45 is rotated at a high speed of about 800 rpm. As shown in Fig. 11, the state is pushed around the outer periphery.

That is, during the dehydration operation, since the laundry 71 in the washing-and-dehydrating drum 5 does not become uniform, as shown, the center of rotation of the external force F by the laundry 71 is rotated from " S " Since the rotational movement of the radius (r ₁ ) around the position (O) and the center of the position (O) is made, the liquid is inclined in the opposite direction to the center of the laundry 71, and the balance of the laundry 71 is balanced. By correcting, the vibration is suppressed small. At the start of the dehydration stroke, the liquid in each balance chamber is transferred from the state in which the liquid is uniformly distributed in all the balance chambers (I, II, III, IV, V, VI) as shown in FIG. Since it is attached to the outer circumference of the liquid balancer 45 by centrifugal force, the influence of the power can be ignored, and it is necessary to pass through the balance chamber 55 continuously from the communication hole 65 provided in each balance chamber at any position. It is possible to move the liquid by the amount.

Next, after the completion of dehydration, the drying air generated by the heater 39 is sent from the drying air suction port 41 into the washing and dewatering drum 5 and drying is performed. After the work is finished, the drying wind is returned to the drying wind circulation passage 7 from the drying wind outlet 43. At this time, the drying wind is made to repeat the circulation that the moisture is removed at the passage of the dehumidifier 37, and again sent from the dry air suction port 41 into the washing and dehydrating drum (5). In this drying operation, the fluid balancer 45 is located at the outlet side of the drying wind, so that the fluid balancer 45 is not exposed to high temperature, so that no trouble occurs even if it is made of synthetic resin. In addition, even if the washing machine 71 is in the fluid balancer 45, the stirring action is imparted by the stirring baffle portion 67, and the stirring baffle portion 69 on the side of the washing and dehydrating drum 5 having a displaced position is provided. In addition, the stirring state is improved, and the drying efficiency can be improved.

12 and 13 illustrate another embodiment of the fluid balancer 45.

That is, six balance chambers (I, II, III, IV, VVI) formed independently of the fluid balancer 45 along the circumferential direction of the washing-and-dehydrating drum 5 by the partition plate 43, and the communication holes ( 57, a continuous ring-shaped balance chamber 55 connected to the balance chambers I, II, and the like, and the fluid balancer 45 inside and behind the washing and dehydrating drum 5 ( 12 in the right and left). And as shown in FIG. 13, the front independent balance chambers III ... are arrange | positioned at about 30 degree shift | deviation circumferentially with respect to the rear independent balance chambers I, II ....

Alternatively, as shown in Figs. 14 and 15, six balance chambers (I, II, III) are formed independently of the fluid balancer 45 along the circumferential direction of the washing and dehydrating drum 5 by the partition plate 43. , IV, V, VI) and a continuous ring-shaped balance chamber 55 connected to the balance chambers I. II through the communication hole 57, and the inner side of the fluid balancer 45. Six balance chambers (I, II, III, IV, V, VI) separated by the partition plate 43a and the communication hole 57 are integrally formed with the outer ring-shaped balance chamber 55. The fluid balancer 45 which consists of continuous ring-shaped balance chambers 55 connected is provided, and it is set as the double structure of an outer side and an inner side. It is also possible to have a structure in which the independent balancer chambers III ... on the inner side are arranged so as to shift about 30 degrees in the circumferential direction with respect to the independent balance chambers I, II ... on the outer side.

In addition, since the other component is the same as that of FIG. 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

Therefore, according to this embodiment, in addition to the effect of the embodiment of Fig. 1, the homogenization of the fluid is further promoted in the rotational direction, so that, for example, the movement sound of the fluid during low-speed rotation such as washing and rinsing is continuous. By improving the flow noise, the noise can be reduced.

Moreover, the influence of the fluid at the time of dehydration start is suppressed small, and smoothly the rotation starts.

As described above, according to the present invention, the noise due to the vibration and the flow noise can be suppressed to a small level, and the laundry agitation efficiency during washing and drying can be improved.

In addition, by attaching the front plate of the washing and dewatering drum to the fluid balance, the assembly performance can be improved.

Claims (12)

A drum type washing machine having a washing tank supported by a suspension in an outer box, a washing / dehydrating drum which is freely controlled about a horizontal axis by a drive motor inside the washing tank, and a fluid balancer installed around the washing / dehydrating drum. , The fluid balancer comprises a plurality of balance chambers formed independently along the circumferential direction of the washing and dehydrating drum, and a continuous ring-shaped balance chamber connected to each of the balance chambers through a communication hole, and the fluid balancers are disposed at two or more places. At the same time, one independent balance chamber is arranged in a position shifted circumferentially with respect to the other independent balance chamber. The method of claim 1, The plurality of balance chambers are formed independently of three to eight in the circumferential direction of the washing and dehydrating drum, and the communication holes are provided at the central portion in the circumferential direction of each balance chamber and the minimum size thereof is 5 mm or more. Drum type washing machine characterized in that. The method of claim 1, The continuous ring-shaped balance chamber is a drum type washing machine, characterized in that the cross-sectional shape is wider than the cross-sectional area of the communication hole. The method of claim 1, Each of the independent balance chamber is provided with a resistance plate therein, the drum-type washing machine, characterized in that the passage size passing through the resistance plate is 5mm or more. The method of claim 1, And attaching a peripheral plate of the washing and dewatering drum to an outer circumferential wall of the fluid balancer, and attaching a front plate of the washing and dehydrating drum to the side wall of the fluid balancer. The method of claim 1, A drum type washing machine, wherein a stirring baffle portion is provided on an inner circumferential wall surface of the fluid balancer. The method of claim 6, A drum type washing machine, wherein the stirring baffle portion provided in the fluid balancer is disposed at an angle in a circumferential direction with the baffle portion provided on the peripheral plate of the washing and dehydrating drum. The method of claim 1, The fluid balancer is a drum type washing machine, characterized in that disposed on the outlet side of the dry air. The method of claim 1, The fluid balancer is disposed inside and behind the washing and dewatering drum, and the front independent balance chamber is disposed in a circumferential direction with respect to the rear independent balance chamber. The method of claim 9, A drum type washing machine, wherein the front independent fluid balance chamber is disposed about 30 degrees in the circumferential direction with respect to the front independent balance chamber. The method of claim 1, The said fluid balancer consists of a ring-shaped balance chamber of the dual structure of an outer side and an inner side, The inner side independent balance chamber was arrange | positioned at the circumferential direction with respect to the independent side balance chamber, The drum type washing machine characterized by the above-mentioned. The method of claim 11, A drum type washing machine, wherein the inner independent balancing chamber is disposed about 30 degrees in the circumferential direction with respect to the outer independent balancing chamber.

Images