KR19980069375A - Noise reduction device of washing machine - Google Patents

Abstract

The present invention relates to a washing machine, and more particularly, to a noise reduction device of a washing machine to minimize the noise caused by vibration generated when the washing machine dewatering.

In other words, when a small amount of laundry is dewatered or when a large amount of laundry is dewatered, a noise reduction device is installed at the lower part of the reservoir to maintain a constant center of gravity of the reservoir, thereby suppressing vibration noise during dehydration as much as possible. The object of the present invention is to provide a noise reduction device for a washing machine, which improves the reliability of the washing machine. In order to achieve the above object, the present invention provides a water storage tank with a weight variable tank equipped with a water supply / drain means on the lower surface of the water tank. When the water in the variable weight barrel is drained when the abnormality, the water tank is characterized in that the water is supplied to the variable weight barrel when the water level is below.

Description

Noise reduction device of washing machine

The present invention relates to a washing machine, and more particularly, to a noise reduction device of a washing machine to minimize the noise caused by vibration generated when the washing machine dewatering.

In general, a washing machine is a washing process that is set in advance, for example, a water supply stroke to which washing water and detergent are supplied, a washing stroke to wash laundry through the water supplied through the water supply stroke, and a rinsing to wash the laundry washed through the washing stroke. A stroke, a drainage stroke for discharging the contaminated washing water to the outside through the rinsing stroke, and a dehydration stroke for dewatering the laundry washed cleanly through the rinsing stroke are sequentially performed.

Looking at the general configuration of a washing machine that performs the washing process as described above, in particular the washing stroke and the dehydration stroke in the washing tank, as shown in Figure 1, the top plate is provided with an operation panel (not shown) Cabinet (10) is coupled to the upper installation, the lower base (not shown) is installed at the lower; A reservoir 20 which is elastically fixed as a suspension device 21 in the cabinet 10; A laundry tub 30 having a predetermined shape in which laundry is contained in the water reservoir 20; A driving means (40) connected to a drive motor (41) and a belt (not shown) that can be reversed and reversed in the lower part of the cabinet (10) to rotate the pulsator (42) in the washing tank (30); And the like.

Herein, the drainage device related to the present invention will be described in more detail. The rubber drainage opening and closing unit 52 for opening and closing the drainage hose 51 connected to the bottom of the reservoir 20 as shown in FIG. 2 is installed. In the housing 52a of the drain opening and closing means 52, a bellows portion 52b is installed to be contracted and expanded, and a spring 52c is installed in the bellows portion 52b, and the bellows portion One end of the operating piece 53 is fixed to the inner front surface of the 52b, and the other end of the operating piece 53 is installed to protrude a predetermined length from the bellows portion 52b to the outside of the housing 52a.

One side of the drain opening and closing means 52 is provided with a forward and backward synchronous motor 54, the synchronous motor 54 and the operating piece 53 is connected to each other by the operating wire 55 by the synchronous motor 54 When the actuation wire 55 is wound, the actuation piece 53 retracts along and the bellows portion 52b of the drain opening / closing means 52 is retracted, while the actuation wire 55 is loosened when the actuation wire 55 is released. By the restoring force of the bellows portion 52b is expanded. That is, when the bellows portion 52b contracts, the drain hose 51 is opened, while when the bellows portion 52b is expanded, the drain hose 51 is blocked.

In addition, a stopper (not shown) which is operated together according to its operation is installed in the operation piece 53, and the stopper corresponds to a brake gear (not shown) of a driving unit (not shown), and the driving unit includes a washing tank 30. ) Is interconnected with the pulley.

In other words, when the dehydration stroke of the washing machine starts, the synchronous motor 54 of the drainage device 50 is operated to pull the operation wire 55, and the operation wire 55 pulls the operation piece 53. By draining the bellows portion 52b of the drain opening / closing means 52 installed in the middle of the drain hose 51, the drainage is carried out, and the working piece 53 is pulled and interlocked with the working piece 53 at the same time. The stopper rotates at a predetermined angle to separate the brake gear of the driving unit. At this time, the driving unit rotates to rotate the washing tub 30 at a predetermined speed, thereby performing a desired dewatering stroke.

However, since the washing machine 1 configured as described above rotates at a high speed regardless of the amount of laundry during dehydration, the noise caused by the vibration of the washing tank 30 and the storage tank 20 is also large depending on the amount of laundry. There will be a difference.

That is, since the water tank 20 is suspended in the suspension device 21 with a constant elasticity, the center of gravity of the water tank 20 changes according to the amount of the laundry in the washing tank 30. For example, a small amount of the laundry in the washing tank 30 is changed. When it is contained, the center of gravity of the water storage tank 20 is increased, so that the eccentric rotation of the washing tank 30 is increased, and the vibration noise of the water storage tank 20 is increased, and when there is a large amount of laundry in the washing tank 30, the water storage tank When the center of gravity of the 20 is lowered and the eccentric rotation of the washing tub 30 decreases, the vibration noise of the water storage tank 20 is reduced. When the laundry is dehydrated in the washing tub 30 when there is a lot of laundry, There was a problem in that the vibration noise is relatively louder than the user shows a disbelief in the washing machine (1).

The present invention was created in view of the above problems, and when installing a small amount of laundry or when dewatering a large amount of laundry or by installing a noise reduction device in the bottom of the reservoir to maintain a constant center of gravity of the reservoir It is an object of the present invention to provide a noise reduction device for a washing machine, which minimizes vibration noise during dehydration and improves a user's confidence.

1 is a cross-sectional view of a typical washing machine,

2 is a schematic view schematically showing a conventional drainage device,

3 is a schematic diagram schematically showing a noise reduction device according to the present invention;

Figure 4 is an enlarged cross-sectional view of the supply and drainage means of the noise reduction device according to the present invention.

Explanation of symbols for the main parts of the drawings

1: washing machine 20: water tank

30: washing tank 60: overflow hose

70: noise reduction device 71: weight variable pain

71a: flow path 71b: water supply hose

72: class and drainage means 72a: housing

72b: distribution opening 72c: opening and closing

72d: Bellows section 72e: Synchronous motor

In order to achieve the above object, the present invention provides a weight variable container provided with a supply / drainage means on the lower surface of the water tank so that the water in the weight variable tank is drained when the water tank is above the medium level, while the water tank is heavy water. When it is above or below, the water is supplied to the variable weight tube.

In addition, the present invention is characterized in that the installation of the overflow hose for detecting the overflow of water in the reservoir, and the water supply hose under the control of the supply and drainage means to communicate with the variable weight in the bottom of the overflow hose.

The present invention is also provided with the supply and drainage means, between the water supply hose and the flow pipe of the variable weight tube is installed a housing and the opening and opening is formed, and then the opening and closing the opening while being operated by the synchronous motor in the housing It is characterized by coaling the bellows part to control.

In addition, the present invention is characterized in that the weight variable cylinder is formed in a ring shape, and then the weight variable cylinder is installed at the edge of the bottom surface of the reservoir.

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

1 is a cross-sectional view of a general washing machine, and FIG. 3 is a schematic view schematically showing a noise reduction device according to the present invention, in which the same components as in FIGS. 1 and 2 will be described with the same reference numerals.

First, the washing machine 1 includes a cabinet 10 in which a top plate 11 having an operation panel unit (not shown) is coupled to an upper portion thereof, and a lower base (not shown) is installed below; A reservoir 20 which is elastically fixed as a suspension device 21 in the cabinet 10; A laundry tub 30 having a predetermined shape in which laundry is contained in the water reservoir 20; A driving means (40) connected to a drive motor (41) and a belt (not shown) that can be reversed and reversed in the lower part of the cabinet (10) to rotate the pulsator (42) in the washing tank (30); And the like.

In addition, a rubber drainage opening and closing unit 52 is installed in the drainage hose 51 connected to the bottom of the water storage tank 20 to open and close it. A bellows part is formed inside the housing 52a of the drainage opening and closing unit 52. 52b) is installed to be able to contract and expand, and the spring 52c is installed in the bellows portion 52b so that the contraction of the bellows portion 52b is contracted by a synchronous motor to be described later and the bellows portion 52b. ) Is caused to expand by the restoring force of the spring 52c.

Then, one end of the operating piece 53 is fixed to the inner front surface of the bellows portion 52b, and the other end of the operating piece 53 protrudes a predetermined length from the bellows portion 52b to the outside of the housing 52a. .

The reciprocating motor 54 is installed on one side of the drain opening and closing means 52, and the synchronous motor 54 and the operating piece 53 are connected to each other as the operating wire 55 to be connected by the synchronous motor 54. When the actuation wire 55 is wound, the actuation piece 53 retracts along to allow the bellows portion 52b of the drain opening and closing means 52 to be contracted, while the actuation wire 55 is released when the actuation wire 55 is released. The bellows portion 52b is expanded by the spring 52c restoring force of the means 52.

That is, when the bellows portion 52b contracts, the drain hose 51 is opened, while when the bellows portion 52b is expanded, the drain hose 51 is blocked.

Then, a stopper (not shown) which is operated together according to its operation is installed in the operation piece 53, and the stopper corresponds to a brake gear (not shown) of a driving unit (not shown), and the driving unit is a washing tank 30. ) To the pulley.

On the other hand, after installing the overflow hose 60 from the bottom of the reservoir 20 to the upper end in communication with each other, by installing a pressure switch (not shown) on the top of the overflow hose 60 of the water reservoir 20 Prevent water overflow.

In addition, the noise reduction device 70 is installed in the reservoir 20. When the configuration thereof is described in detail, a ring-shaped weight variable tube 71 is formed at the edge of the bottom surface of the reservoir 20, and the weight A flow path tube 71a having a predetermined diameter is formed in place of the variable cylinder 71, and then the water supply hose 71b is connected to the flow path tube 71a so as to communicate with the lower end of the overflow hose 60.

A supply / drainage means 72 is provided at the end of the flow pipe 71a to control the flow of water, which is shown in FIG. 4, which is a flow pipe of the water supply hose 71b and the variable weight tube 71. As shown in FIG. While a housing 72a having a flow opening 72b in one side and an opening / closing opening 72c in the lower portion is provided between the 71a, a bellows portion 72d is installed in the housing 72a. At the end of the bellows portion 72d, a synchronous motor 72e is installed.

That is, when the synchronous motor 72e is operated and the bellows portion 72d is contracted, the distribution port 72b and the opening and closing port 72c communicate with each other to supply and drain water, and the bellows portion 72d is The flow opening 72b and the opening / closing opening 72c are closed by the spring restoring force therein.

The above description is only one embodiment of the present invention, and any change may be made within the scope of the present invention.

Referring to the operation of the present invention configured as described above in detail.

When the water supply administration of the washing machine (1) is filled with the amount of water specified in the reservoir 20, the water rises to a predetermined height in the overflow hose 60 communicated with the bottom of the reservoir 20, then closed The rise of water is stopped by the pressure of the overflow hose 60.

At the same time, it is determined whether the microcomputer at the operation panel unit installed in the top plate 11 is above or below the water level of the water. For example, when a signal is transmitted below the water level, the microcom is dehydrated during operation of the drainage device 50. The operation wire 55 is pulled by operating the synchronous motor 54, and the operation wire 55 pulls the operation piece 53 to have a bellows portion of the drain opening / closing means 52 installed in the middle of the drain hose 51. The drainage is carried out by shrinking the 52b, and the microcomputer operates the synchronous motor 72e of the noise reduction device 70 to shrink the bellows portion 72d, and the outlet 72b in the housing 72a. And the opening and closing port (72c) to communicate the water drained in the reservoir 20 in the variable weight tank 71, the weight variable cylinder 71 is full and at the same time the synchronous motor (72e) to operate again A distribution port in the housing 72a while inflating the bellows portion 72d. The 72b and the opening-closing opening 72c are interrupted | blocked.

When the weight variable tube 71 is full, the center of gravity of the water storage tank 20 is lowered due to the load, so that the eccentric rotation of the washing tank 30 is reduced, and the vibration noise of the water storage tank 20 is reduced.

On the other hand, when a signal that the water level or more is transmitted to the micom of the operation panel portion, the microcomputer operates the synchronous motor 54 of the drainage device 50 to pull the operation wire 55 during dehydration administration, the operation wire ( 55 is drained by pulling the operating piece 53 to shrink the bellows portion 52b of the drain opening and closing means 52 installed in the middle of the drain hose 51, and the micom is a noise reduction device 70 The synchronous motor 72e is operated to deflate the bellows portion 72d, and the water in the weight variable tube 71 is drained while communicating the flow port 72b and the opening and closing port 72c in the housing 72a. .

After the water is discharged from the variable weight tube 71, the center of gravity of the reservoir 20 by the load is increased to prevent the failure of the suspension device 21 due to the overload of the reservoir 20, as in the case of low water level Keeping the center of gravity of the reservoir 20 constant to minimize vibration noise.

According to the present invention, when a small amount of laundry is dewatered or a large amount of laundry is dewatered, the noise reduction device 70 is installed at the lower portion of the water storage tank 20 so that the center of gravity of the water storage tank can be kept constant. The vibration noise generated at the time of dehydration of (1) is minimized while the vibration noise is minimized, thereby improving the user's confidence.

Claims (4)

A cabinet 10 having a top plate 11 provided with an operation panel coupled to an upper portion thereof, and having a lower base installed at a lower portion thereof; A reservoir 20 which is elastically fixed as a suspension device 21 in the cabinet 10; A laundry tub 30 having a predetermined shape in which laundry is contained in the water reservoir 20; Drive means (40) connected to the drive motor (41) capable of being reversed to the lower part of the cabinet (10) to rotate the pulsator (42) in the washing tank (30); In the washing machine 1 composed of While installing the weight variable tube 71 provided with the supply and drainage means 72 on the lower surface of the reservoir 20 to allow the water in the weight variable tube 71 to drain when the reservoir 20 is above the medium level, Noise reduction device of the washing machine, characterized in that the water is supplied to the variable weight tube (71) when the reservoir 20 is below the water level. The method of claim 1, After installing the overflow hose 60 to detect the overflow of water in the reservoir 20, the water under the control of the supply and drain means 72 to the weight variable barrel 71 from the bottom of the overflow hose 60 Noise reduction device for a washing machine, characterized in that the supply hose 71b is installed in communication. The method of claim 1, The housing 72a is provided with the supply / drainage means 72, and has a distribution port 72b and an opening and closing port 72c formed between the water supply hose 71b and the flow path tube 71a of the variable weight tube 71. After the installation, the noise reduction device of the washing machine, characterized in that the bellows portion (72d) for controlling the opening and closing port 72c while operating by the synchronous motor (72e) in the housing (72a). The method of claim 1, After forming the weight variable barrel (71) in the shape of a ring, noise reduction device of the washing machine, characterized in that the variable weight barrel (71) is installed at the edge of the bottom of the reservoir (20).