KR20010026174A - Drum type washing machine - Google Patents

Abstract

PURPOSE: A drum washing device is provided to save material costs by decreasing the number or weight of additional mass for suppressing vibration noises upon washing, rinsing or dehydrating. CONSTITUTION: A drum washing device is comprised of an outside case(11) prepared with a door of the washing machine; an outer bath(12) resiliently installed by several springs and dampers inside the outside case; a washing and dehydrating bath(13) installed in the outer bath to be rotatable in one way or two ways; a drive motor(14) fixed on the outer circumferential face of the outer bath; an additional mass(15) installed on an upper part of the outer circumferential face of the outer bath; a drain pump(16) integrally fixed to communicate a sucking side with the outer circumferential face; and a drain hose(17) installed on a discharge side of the drain pump. Upon a dehydrating process, laundries in the washing and dehydrating bath are entangled so that an unbalance mass state is incurred. The unbalance mass state is offset by the additional mass and the mass of the drain pump. In addition, as the remaining water in the drain hose functions as a liquid balancer upon the vibration of the outer bath. Thus, the washing machine stably performs a washing work without vibration noises.

Description

Drum Washing Machine {DRUM TYPE WASHING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump mounting structure of a drum washing machine, and more particularly, to a drum washing machine in which a drain pump is integrally communicated with an outer tank and fixedly installed to reduce the number and weight of additional mass.

In general, the automatic washing method in which washing and dehydration are processed in a batch is provided with a separate rotary vane in the washing and dehydrating tank so that washing is performed by rotating the laundry and washing water in both directions or in one direction. , An agitator type that is provided with a rotary blade and a laundry punch in the laundry and the dehydration tank so that the laundry is performed by tapping the laundry while rotating the laundry and the washing water. It is divided into a drum type (drum type) to rotate in the direction to perform the washing.

The automatic washing machine performs a dehydration stroke after washing and rinsing stroke. In this dehydration stroke, an unbalanced mass is generated due to the deflection of cloth generated in the washing and dehydrating stroke, and the unbalanced mass has a holding force at the time of dehydration. (加 振 力) acts as a dehydration vibration of the washing machine.

In order to suppress the dehydration vibration of such a washing machine, in the conventional drum washing machine, an additional mass is fixedly mounted on the outer surface of the outer tub that does not rotate.

1A and 1B illustrate an example of a conventional drum washing machine. As shown in the drawing, a conventional drum washing machine has a horizontal type outer tub 2 in the outer case 1 of several springs S and dampers ( It is elastically supported and installed by a damper (D), and washing and dewatering tanks (not shown) with several baffles protruding from the inner circumferential surface thereof are rotatably installed inside the outer tub 2, and the outer tub 2 A driving motor 3 for rotating the washing and dehydrating tank is installed on the outer lower surface of the outer side, and upper and lower additional masses 4 and 5 for fixing the unbalanced mass are fixed to the outer peripheral surface of the outer tank, and the outer case ( The bottom surface of 1) is fixedly installed with a drain pump 6 for discharging the sewage of the washing and dehydration tank to the outside.

The drive motor 3 is installed on the rear side of the outer tub 2, but in consideration of the height of the washing machine is installed on the lower side rather than the lower side, the upper and lower additional mass (4, 5) is the front of the outer tub (2) It is fixedly installed on the upper and lower sides.

The drain pump 6 is connected to a suction side drain hose 7 whose inlet side communicates with the outer tub 2, and the outlet side of the drain pump 6 extends to a rear surface of the outer case 1 at a predetermined height. )

In the drawings, reference numeral C denotes a connection ring for connecting the outer tank and the suction side drainage lake, and V is a transmission member for connecting the driving motor to the washing and dehydrating tank.

The conventional drum washing machine as described above is operated as follows.

That is, when the washing mode is selected, the washing water, which is about 60% of the volume of the outer tank 2, flows into the inside of the outer tank 2 together with the detergent through a water hose (not shown), and then the washing and dehydrating tank (not shown). ) Is usually rotated at a low speed of about 50 to 60 rpm for about 20 minutes, and the laundry stored in the washing and dehydrating tank is moved to the upper half while being stirred by a baffle (not shown), and then it falls down due to its own weight. The washing and rinsing are performed by the development and the drop impact and the detergent contained in the laundry.

Thereafter, the washing and dehydrating tank is rotated in one direction by the driving motor 3 to perform dehydration stroke by centrifugal force. In this case, the laundry in the washing and dehydrating tank (not shown) is tangled and twisted with each other. Since the dehydration stroke is made, in this process, the unbalanced mass of the washing and dehydrating tank (not shown) acts as an excitation force, causing vibration noise of the washing machine, but the vibration noise is an additional mass fixed to the outer tank. It was suppressed by (4, 5) and the washing machine stably performed the dehydration stroke.

However, in the conventional drum washing machine as described above, as the above-described additional mass (4, 5) is installed on the upper and lower sides of the outer tub (2), as well as the material cost increases, as well as increasing the weight of the washing machine There was a problem that causes inconvenience when moving the washing machine.

In addition, since the connection between the outer tank (2) and the drain pump (6) by a long suction side drain hose (7), the clean water is filled in the suction side drain hose (7) in the washing / rinsing mode of the wash water There was also a problem that the usage increases.

The present invention is made in view of the problems of the conventional drum washing machine as described above, by reducing the number or weight of additional mass to suppress the vibration noise during washing and rinsing or dehydration, as well as reducing the material cost of the washing machine body easily The purpose is to provide a drum washing machine that can be moved.

In addition, the object of the present invention is to provide an environmentally friendly drum washing machine by preventing abuse of clean laundry water during washing or rinsing.

1 is a side view showing an example of a conventional drum washing machine broken from the side.

Figure 2 is a side view showing an example of the drum washing machine of the present invention broken in side.

Figure 3 is a rear view showing an example of the drum washing machine of the present invention broken from the bottom.

Figure 4 is a rear view showing a modification of the drum washing machine of the present invention from the bottom.

** Explanation of symbols for main parts of drawings **

11: outer case 12: outer tank

13: washing and dehydrating tank 14: driving motor

15: additional mass 16: drain pump

17: drain hose

In order to achieve the object of the present invention, the outer tub that is elastically installed in the outer case is filled with the washing water to a certain height, and rotatably installed in the inner tank to wash / rinse / dehydration while rotating in one or two directions A washing and dehydrating tank to be carried out, a driving motor fixedly installed on an outer circumferential surface of the outer tank to generate driving force for rotating the washing and dehydrating tank, a transmission member for transmitting the driving force of the driving motor to the washing and dewatering tank, and A drain pump is fixedly installed on the outer circumferential surface so as to communicate with the suction side, and includes a drain pump for suctioning / discharging the sewage after washing and rinsing, and a drain hose for releasing the sewage discharged through the discharge side of the drain pump to the outside of the outer case. A drum washing machine is provided.

Hereinafter, an example of a drum washing machine according to the present invention will be described in detail based on the embodiment shown in the accompanying drawings.

2 is a side view showing an example of the drum washing machine of the present invention in a side view, and FIG. 3 is a rear view showing an example of the drum washing machine of the present invention in a bottom view thereof.

As shown in the drawing, the drum washing machine according to the present invention includes an outer case 11 having a washing machine door on a front surface thereof, and a plurality of springs S and dampers D inside the outer case 11. An outer tub 12 that is elastically installed, a washing and dehydrating tank 13 rotatably installed in one or both directions inside the tub 12, and a driving motor fixedly installed on an outer circumferential surface of the tub 12 14), an upper additional mass 15 provided on the upper half of the outer circumferential surface of the outer tub 12, a drain pump 16 integrally fixed to the suction side to communicate with the outer circumferential surface of the outer tub 12, and the drainage thereof. It comprises a drain hose 17 which is provided in communication with the discharge side of the pump 16.

The outer tub 12 and the washing and dehydrating tank 13 are all formed in a cylindrical shape, among which a water supply hose (not shown) and a detergent hose (not shown) communicate with each other, and the washing and dehydrating tank 13 includes: A plurality of washing holes (not shown) are formed in the outer tub 12 such that washing water filled at a predetermined height flows in.

The rear surface of the washing and dehydrating tank 13 is connected to the rotating shaft of the drive motor 14 and the belt (V) electric pulley for transmitting the driving force of the drive motor 14 to the washing and dehydrating tank (13) Code) is installed. The drive motor 14 is preferably installed in the side half in consideration of the height of the washing machine body.

The drain pump 16 is preferably installed at the lowest point of the outer tank 12 to facilitate the suction of sewage, and the upper additional mass 15 corresponding thereto is installed at the uppermost point of the outer tank 12. In the present embodiment, the upper additional mass 15 may be excluded in consideration of the case where the upper additional mass 15 is installed, the capacity of the washing machine, the weight of the drain pump 16, or the like. May be added).

Here, as shown in FIG. 3, the drain hose 17 may be disposed at the center of the outer case 11, and as shown in FIG. 4, the drain hose 17 ′ is the outer case 11. It may be arranged on the inner wall surface of the, where the drain hose 17 is disposed on the center of the outer case 11, the residual water filled therein acts as a fluid balancer, the vertical vibration of the outer tank 12 On the other hand, when the drain hose 17 'is disposed on the inner wall surface of the outer case 11, the left and right vibrations of the outer tub 12 can be suppressed.

In the drawings, the same reference numerals are given to the same parts as in the prior art.

The general operation of the drum washing machine according to the present invention configured as described above is the same as in the prior art.

That is, when the washing mode is selected, the washing water flows into the inside of the outer tub 12 together with the detergent through a water supply hose (not shown), and then the washing and dehydrating tank 13 proceeds at a low speed to rotate the washing and dehydrating tank ( 13) washing and rinsing are carried out while stirring the laundry stored in.

Subsequently, the washing and dehydrating tank 13 is driven by the driving motor 14 to perform a dehydration stroke by centrifugal force while rotating at a high speed in one direction, wherein the laundry in the washing and dehydrating tank 13 is tangled with each other. Dehydration stroke is made in the twisted state to cause an unbalanced mass, but this unbalanced mass is offset by each other's own mass of the upper additional mass 15 and the drain pump 16 fixed to the outer tank, as well as the outer case ( The remaining hoses, which are not discharged to the drain hoses 17 and 17 'mounted on the center or inner side of the lower half of 11), act as a liquid balancer when the outer tub 12 vibrates, so that the washing machine works more stably without vibration noise. Will be performed.

Thus, in place of the conventional lower side additional mass (5) fixedly installed on the outer peripheral surface of the lower side of the outer tank 12 integrally fixed, as well as for connecting the drain pump 16 to the outer tank 12 By removing the suction side drain hose 7 and the connection ring (C), the production cost is reduced.

In addition, since the outer tub 12 and the drain pump 16 are directly connected without the suction side drain hose, clean laundry water is not unnecessarily filled between the outer tub 12 and the drain pump 16 when washing or rinsing. It saves water usage.

In addition, the drain pump 16 is directly connected to the outer tank 12 so that the drain pump 16 immediately receives the vibration of the outer tank 12 while the other side of the drain pump 16 has a remaining drain hose ( Since 17 and 17 'are connected, the drain hose 17 and 17' and the remaining water act as a liquid balancer when the outer tub 12 vibrates, thereby more effectively suppressing an unbalanced mass.

In the drum washing machine according to the present invention, the suction side of the drain pump is integrally communicated with and fixedly installed on the lower side of the outer tank, and the drain hose communicates with the drain hose so that the remaining water remains on the discharge side of the drain pump. Meanwhile, the remaining water acts as a liquid balancer together with the drainage hose, which can reduce the number or weight of additionally added mass, and the external tank and the drain pump can be directly communicated to reduce the amount of washing water, and the simple addition A liquid balancer is added in addition to the mass to effectively counterbalance the unbalanced mass.

Claims (1)

An outer tub that is elastically installed inside the outer case and the washing water is filled to a certain height, and a washing and dehydrating tank that is rotatably installed in the outer tank to perform washing / rinsing / dehydrating while rotating in one or two directions; A driving motor fixedly installed on an outer circumferential surface thereof to generate a driving force for rotating the washing and dehydrating tank, a transmission member for transmitting the driving force of the driving motor to the washing and dehydrating tank, and an intake side in communication with the outer circumferential surface of the outer tub. A drum washing machine comprising a drain pump fixedly installed to suck / discharge sewage after washing and rinsing, and a drain hose communicating with the discharge side of the drain pump to guide the sewage discharged to the outside of the outer case.