KR100565724B1 - the device for decreasing vibration in a drum washer - Google Patents

Abstract

The present invention is to reduce the vibration by using the remaining water after washing to replace the weight cast iron or concrete.

To this end, the present invention in the drum washing machine,

A dehydration flow passage communicating with a lower end of the outer tank to drain the water in the inner tank; a dehydration pump installed on the dehydration flow passage and applying a forward rotational force to smoothly drain the water; and installed on the dehydration flow passage. Located at the same level or lower than the end of the flow path, and having an inlet for receiving the water discharged from the dewatering pump and an outlet for discharging the water flowing into the inlet, vibration of the outer tank by continuously filling the water flowing into the inlet It consists of a balance tank that acts as a weight to restrain.

And a drainage passage communicating with the dehydration passage located between the outer tank and the dehydration pump to drain both the inner tank and the balance tank to the outside, and a reverse rotational force installed on the drain passage to smoothly drain the water. Vibration reduction device consisting of a drainage pump to be applied, and a blocking film provided between the dehydration pump and the drainage pump to block the flow of water between the dehydration pump and the drainage pump is provided in the outer tank.

Drum Washing Machine, Vibration Reduction Device

Description

The device for decreasing vibration in a drum washer

1 is a perspective view showing the configuration of a general drum washing machine.

Figure 2 is a block diagram showing the configuration of a vibration washing device of the drum washing machine according to the prior art.

Figure 3 is a block diagram showing the configuration of a vibration washing device of the drum washing machine according to the present invention.

Figure 4 is a schematic diagram showing the flow of water during dehydration in the vibration reducing device according to the present invention.

Figure 5 is a schematic diagram showing the flow of water when draining in the vibration reducing device according to the present invention.

Figure 6 is a perspective view showing the operating state of the check valve when dewatering in the vibration reducing device according to the present invention.

Figure 7 is a perspective view showing the operating state of the check valve when draining in the vibration reducing device according to the present invention.

Figure 8 is an embodiment showing the configuration of the dewatering pump in the vibration reducing device according to the present invention and the flow of water when dewatering.

Figure 9 is an embodiment showing the configuration of the drain pump and the flow of water when draining in the vibration reducing device according to the present invention.

10 is a schematic view showing a state in which the dehydration pump and the drain pump are integrally formed in the vibration reducing device according to the present invention.

Explanation of symbols for main parts of the drawings

100: dehydration flow path 120: dehydration pump

150: balance tank 151: balance tank entrance

152: balance tank outlet 200: drainage passage

220: drain pump 330: check valve

331: connector 332: first hole

333: second hole 334: plug

340: discharge hose 350: through-hole

400: barrier

The present invention relates to a drum washing machine, and more particularly to a vibration reduction device of the drum washing machine.

1 and 2, the drum washing machine includes a main body 10, an outer tub 11 supported by a damper 41 and a spring 40 in the main tub, and laundry when placed in the outer tub. It is largely divided into a cylindrical inner tub 12 that can be put, the driving force is transmitted by the driving means for washing the laundry in the inner tub.

The driving means is connected to the pulley 33 installed on the shaft of the inner rear of the inner tank and the motor 30 mounted on one side of the outer tank by the belt 32 to the power of the motor 30 to the inner shaft 34 ) Is configured to deliver.

On the other hand, the drum washing machine can not only reduce the overall height compared to the pulsator washing machine that rotates in the state in which the inner tank (12) is standing, but also increase the washing capacity, and the demand is rarely generated since problems such as poking. There is an increasing trend.

The drum washing machine configured as described above performs the following operation.

Put the laundry to be washed into the inner tank 12, when the washing mode provided in the control unit in the detergent container is put in the washing state, the washing stroke ▶ rinsing stroke ▶ dehydration stroke is made continuously and the washing is completed.

That is, when the washing mode is selected, the water supply means is operated to supply water to be washed into the inner tank 12 which is rotatably installed in the outer tank 11, and the water supply is stopped after the supplied water is filled by the appropriate level. At the same time, the motor 30 repeatedly performs forward and reverse driving.

When the motor 30 performs the forward and reverse driving in this way, the driving force of the motor 30 is decelerated by the deceleration means and applied to the inner tank 12, and the inner tank 12 receiving the driving force is forward and reverse rotation. Due to the water flow generated, the laundry is rubbed with the water flow and the inner tank 12, and is decomposed by the detergent and washed.

After the washing stroke is completed, the rinsing is performed while going through the same process as the washing stroke, and after the rinsing stroke is completed, a dehydration stroke is performed immediately. After completely draining the filled water, the driving means is driven, and the driving force of the driving means is transmitted to the inner tank 12 as it is not decelerated, so that the inner tank 12 is rotated at a high speed to be contained in the laundry by centrifugal force. As water escapes, dehydration is carried out.

However, in the dehydration process, the drum washing machine is a horizontal washing machine, and thus, the drum washing machine is very sensitive to vibration compared to a vertical washing machine which is a pulsator washing machine.

For this reason, the drum washing machine, which is a horizontal washing machine, is relatively disposed because the inner tank 12 is laid horizontally, and the drain pump 31 and the motor 30 provided in the outer tank 11 are located at the rear side when dewatering. This is because a large vibration can be generated because the weight of the front portion of the outer tub 11 is less.

And when dehydration of the laundry in the inner tank 12 is incorrectly seated causing the eccentricity when the inner tank 12 is rotated, the outer tank 11 located in the front portion of the main body is directly received the vibration of the inner tank 12 is a large ellipse Rotate while drawing.

That is, vibration occurs when washing and dehydrating the inner tub 12 while rotating, and when the vibration is directly transmitted to the outer tub 11 without being reduced, the vibration coincides with the natural frequency of the outer tub 11. do.

As a result, as shown in FIG. 2 to reduce this phenomenon, the following vibration reduction device was used together.

The first vibration reduction device, by connecting the lower left and right outer peripheral surface of the outer tank 11 and the left and right of the lower surface of the main body 10 with a pair of dampers 41, respectively, vibration generated by the rotation of the inner tank 12 The vertical vibration is configured to be reduced by the dampers 41, respectively.

Second vibration reduction device, the upper side of the outer periphery of the outer tank 11 and the upper surface of the main body 10 is connected to a plurality of support springs (40) by the vibration generated by the rotation of the inner tank 12 damper ( 41) is configured to restore the amount of displacement change absorbed.

Third, the vibration reduction device increases the weight of the outer tub 11 to reduce the natural frequency of the outer tub 11 so that the natural frequency of the tub 11 and the inner tub ( The frequency generated in 12) is equalized.

Therefore, when the inner tank 12 is about to rotate when dewatering, the frequency is already the same, and while the dehydration is in progress, the natural frequency of the outer tank 11 and the frequency generated in the inner tank 12 do not coincide with each other. Can be prevented beforehand.

That is, by installing the weight 42 of cast iron or concrete on the upper surface and the lower surface of the outer tub 11 not only increased the weight of the outer tub 11, but also the motor 30 mounted on the outer tub 11 And so as to correspond to the weight of the drain pump 31 is balanced.

However, the third vibration reduction device has the following problems.

In order to reduce vibration, cast iron or concrete is used to increase the cost, and thus the weight of the product is increased, thereby causing a transportation problem.

In order to cope with the weight, the strength of other related parts must also be reinforced, which causes a cost increase.

The present invention has been made to solve the problems of the prior art, to reduce the weight when transporting the product and to reduce the product cost, vibration reduction device using the wash water instead of the existing weight cast iron or concrete Its purpose is to develop it.

The present invention for achieving the above object relates to a drum washing machine,

A dehydration flow passage communicating with a lower end of the outer tank to drain the water in the inner tank; a dehydration pump installed on the dehydration flow passage and applying a forward rotational force to smoothly drain the water; and installed on the dehydration flow passage. Located at the same level or lower than the end of the flow path, and having an inlet for receiving the water discharged from the dewatering pump and an outlet for discharging the water flowing into the inlet, vibration of the outer tank by continuously filling the water flowing into the inlet It consists of a balance tank that acts as a weight to restrain.

And a drainage passage communicating with the dehydration passage located between the outer tank and the dehydration pump to drain both the inner tank and the balance tank to the outside, and a reverse rotational force installed on the drain passage to smoothly drain the water. Vibration reduction device consisting of a drainage pump to be applied, and a blocking film provided between the dehydration pump and the drainage pump to block the flow of water between the dehydration pump and the drainage pump is provided in the outer tank.

Referring to the drawings to describe the above content in more detail as follows.

Figure 3 is a block diagram showing the configuration of the vibration reducing device of the drum washing machine according to the present invention, Figure 4 is a schematic diagram showing the flow of water during dehydration in the vibration reducing device according to the present invention, Figure 5 is a vibration reduction according to the present invention Figure 6 is a schematic diagram showing the flow of water when draining in the device, Figure 6 is a perspective view showing the operating state of the check valve when dewatering in the vibration reducing device according to the invention, Figure 7 is a check valve of the drain in the vibration reducing device according to the invention Is a perspective view showing an operating state.

And Figure 8 is an embodiment showing the configuration of the first drain pump and the flow of water in the vibration reduction device according to the invention, Figure 9 is a configuration and drainage of the second drain pump in the vibration reduction device according to the present invention 10 is an embodiment showing the flow of water, Figure 10 is a schematic diagram showing a state in which the first drain pump and the second drain pump in the vibration reducing device according to the present invention.

As shown in FIG. 3, the configuration will be described in more detail as follows.

The main body 10 forming the outer shape, the outer tank 11 supported by the main body 10, the inner tank 12 located in the outer tank 11 to directly wash laundry, and the inner tank 12 In the drum washing machine comprising a motor 30 for applying a driving force,

In order to reduce the vibration of the outer tub 11 generated when the inner tub 12 rotates by using weighted concrete or washing water instead of the cast iron 42, the outer tub to drain the water in the inner tub 12 to the outside (11) a dehydration passage 100 connected to a lower end, a dehydration pump 120 installed on the dehydration passage 100 to apply a forward rotational force to smoothly drain the water, and on the dehydration passage 100. Is installed, is located at the same or lower height than the end of the dewatering flow path 100, the inlet 151 receiving the water discharged from the dewatering pump 120 and discharged the water introduced into the inlet 151 It has an outlet 152, and consists of a balance tank 150 to serve as a weight to keep the water flowing into the inlet 151 to suppress the vibration of the outer tank (11).

And a drain passage 200 communicating with the dehydration passage 100 located between the outer tank 11 and the dehydration pump 120 to drain all of the water in the inner tank 12 and the balance tank 150 to the outside. Is installed on the drain passage 200 is provided with a vibration reduction device consisting of a drain pump 220 for applying a reverse rotation force to smoothly drain the water is provided in the outer tank.

In order to explain in more detail by dividing the operating state of the vibration reducing device of the drum washing machine configured as described above in the case of dehydration and drainage, the dehydration passage 100 and the drainage passage 200 will be described in more detail as follows.

The dewatering flow path 100 is a first dewatering pipe 110 connecting the lower end of the outer tank 11 and the dewatering pump 120, and a second connecting the dewatering pump 120 and the balance tank 150. It consists of a dehydration pipe 130 and the third dewatering pipe 130 for connecting the balance tank 150 and the outside.

The drain passage 200 may include a first drain pipe connecting one portion of the first dewatering pipe 110 and the drain pump 220, and a second drain pipe connecting the drain pump 220 to the outside. It is composed.

When the operation state of the vibration reduction device of the drum washing machine configured as described above in more detail divided by dehydration and times as follows.

First, as shown in Figure 4, 8, during dehydration, the water accumulated in the inner tank 12 is the dewatering pump along the first dewatering pipe 110 by the forward driving force of the dewatering pump 120. Water flows into the 120 and the water is discharged to the second dehydration pipe 130 by the continuous rotational force of the dewatering pump 120, and continues to the balance tank 150 through the inlet 151 of the balance tank. Inflow.

Water continues to flow into the balance tank 150 so that the balance tank 150 is filled and discharged to the outside along the third dehydration pipe 140 when the balance tank 150 is full.

At this time, the water filled in the balance tank 150 serves as a weight weight that was a conventional vibration reduction device during the dehydration time to reduce the vibration.

Second, as shown in Figures 5 and 9, during the drainage, the water stored in the balance tank 150 is drained along the second dewatering pipe 130 and the first dewatering pipe 110 by gravity. Water that flows into the flow path 200 and accumulated in the inner tank 12 also flows into the drain flow path 200 and flows from the first drain pipe 210 to the drain pump 220 by the reverse rotational force of the drain pump 220. Inflow, it is discharged to the second drain pipe 230 by the continuous rotational force of the drain pump 220 is completely drained to the outside.

When the drainage is finished, all the operations of the vibration reducing device are finished.

On the other hand, the check valve 330 is further provided on the end of the third dewatering pipe 140 and the second drain pipe 230 and the check valve 330 to implement the vibration reducing device more preferably. It further comprises a discharge hose 340 further installed to connect to the outside.

Therefore, as shown in Figures 6 and 7, one embodiment of the check valve 330 is composed of the following components.

The check valve 330 is a valve that opens and closes due to a pressure difference, and a connection pipe 331 connecting the end portions of the third dewatering pipe 130 and the second drain pipe 230 to the discharge hose 340. And a first hole 332 formed in an inner wall of the connection pipe 331 and having a diameter similar to that of the third dewatering pipe 140, and a second drain pipe 230 formed in an inner wall of the connection pipe 331. The second hole 333 having a diameter similar to the diameter of the and the connection pipe 331 is rotatably provided by the pressure difference, only the first hole 332 when dewatering to open the second hole when draining ( 333) is provided with a stopper 334 made in the shape of a dumbbell to open only.

The operation principle of the check valve 330 made as described above will be described in more detail by dividing into dehydration and drainage.

First, the operation principle of the check valve during dehydration, as shown in Figure 6, the pressure of the third dewatering pipe 140 of the discharge hose 340 exposed to the outside by the rotational force of the dewatering pump 120 Since the pressure is greater than the pressure, the stopper 334 located in the first hole 332 of the stopper 334 sealing the first hole 332 and the second hole 333 is opened to generate a flow of water. The stopper 334 located in the second hole 333 is kept closed due to the pressure of water flowing into the first hole 332.

 Second, the operation principle of the check valve when draining, as shown in Figure 7, the pressure of the discharge hose 340, the pressure of the second drain pipe 230 is exposed to the outside by the rotational force of the drain pump 220 Since it is larger, the stopper 334 located in the second hole 333 of the stopper 334 sealing the first hole 332 and the second hole 333 is opened to open the second hole 333. The flow of water is generated through), and the stopper 334 of the first hole 332 is kept closed due to the pressure of the water flowing into the second hole 333.

On the other hand, as shown in Figure 8, one embodiment of the dewatering pump 120 is composed of the following components.

An impeller 121 that rotates to suck and discharge water, a casing 122 for guiding the water sucked by the impeller 121, and a casing 122 to be positioned at a center side of the impeller 121. And a discharge port 124 formed along a tangential line of the casing 122 and connected to the second dehydration pipe 130 to be connected to the first dehydration pipe 110.

The dewatering pump made as described above operates only during dehydration, and its operation principle is as follows.

The water of the inner tank 12 is introduced into the casing 122 through the first dehydration pipe 110 by the rotational force of the impeller 121, and the casing 122 is continued by the rotational force of the impeller 121. ) Is introduced into the second dewatering pipe 130 along the discharge port 124.

And, as shown in Figure 9, one embodiment of the drain pump 220 consists of the following components.

An impeller 221 which rotates to suck and discharge water, a cylindrical casing 222 for guiding the water sucked by the impeller 221, and a tangential line between the casing 222 and the first drain pipe; And a discharge port 224 formed along a tangent of the casing and connected to the second drain pipe 230.

The drainage pump made as described above operates only at the time of drainage, and its operation principle is as follows.

By the rotational force of the impeller 221, the water of the inner tank 12 is introduced into the casing 222 via the first dewatering pipe 110 and the first drain pipe 210, and the balance tank ( Water of 150 is introduced into the casing 222 via the second dehydrating pipe 130, the first dehydrating pipe 110, and the first drain pipe 210, and the water flows into the casing 222. As soon as it is discharged by the rotating force of the impeller 221 is discharged to the second drain pipe 230 along the discharge port 234.

In addition, since the dehydration pump 120 or the drain pump 220 is operated according to the driving direction of one pump motor 310, the dehydration pump 120 and the drain pump 220 are installed in a line with the shaft.

Therefore, in order to block the flow of water through the interface between the dehydration pump 120 and the drain pump 220, it will be preferable to install a barrier film 400 on the interface as shown in FIG.

On the other hand, in order to implement the vibration reduction device of the drum washing machine more preferably, as will be described later, the through-hole pipe 350 is further provided.

That is, as shown in Figures 3, 4, 5, one embodiment of the through-hole 350 is connected as follows.

The detergent container by the through-hole pipe 250 by interconnecting a hole (not shown) and a known detergent container 20 formed in the through-hole pipe 350 so that the pipe can be connected to at least one portion of the balance tank 150. It is configured to allow smooth drainage during dehydration and drainage by allowing air to flow in or out of the balance water tank 150 from the outside.

The through-hole 350 provided as described above functions as follows.

Balanced water tank 150 is a vacuum state by the driving force of the drainage pump 220 when the drainage occurs because water flow is blocked, the air through the through-hole 350 to smooth the flow of water occurs It is intended to be inflow or outflow.

Although not described in the above description, it can be seen that the embodiments of the check valve and the drain pump which can be implemented by the present invention are various.

In the above check valve, the second embodiment is provided between the first hole and the second hole formed in the connecting pipe so that one stopper can be rotated instead of the pair of stoppers of the two pairs, so that the first valve at the time of dehydration The hole may be opened to block the second hole, and the drainage may be configured to open the second hole to block the first hole.

 As described above, the present invention can significantly reduce the cost of the parts compared to the prior art because it performs a weight weight role by using the water that is washed and discarded instead of the iron or concrete of the prior art in order to reduce the vibration generated during dehydration. have.

And since the balance chamber is filled with water only during dehydration, the weight can be easily reduced by carrying out weight reduction during transportation.

In addition, since a design for reinforcing product strength is not required, additional cost reduction of the product can be expected.

Claims (5)

A dewatering flow passage communicating with the lower end of the outer tank to drain the water in the inner tank to the outside; A dewatering pump installed on the dewatering flow passage and applying a forward rotational force to smoothly drain the water; Is installed on the dehydration flow path, located at the same level or lower than the end of the dehydration flow path, has an inlet receiving the water discharged from the dewatering pump and an outlet for discharging the water introduced into the inlet, Balance tank that acts as a weight to keep the water flowing into the tank to suppress the vibration of the outer tank, A drain passage communicating with the dehydration passage located between the outer tank and the dehydration pump to drain all of the water of the inner tank and the balance tank to the outside; A drain pump installed on the drain passage and applying a reverse rotation force to smoothly drain the water; And a blocking membrane provided between the dewatering pump and the drainage pump to block the flow of water between the dewatering pump and the drainage pump. The method of claim 1, In order to smoothly flow the water in the balance tank during drainage and dehydration, one end is further connected to the balance tank, and the other end is further provided with a through-tube connected to the detergent container. Vibration reduction device of the drum washing machine. The method of claim 1, A check valve positioned together on the end of the dewatering flow path and the end of the drain flow path, the check valve being opened and closed by a pressure difference between the dewatering flow path and the drain flow path; The other end of the check valve that is not connected to the dewatering flow path and the drainage flow path further comprises a discharge hose for forming a flow path, characterized in that the drum washing machine. The method according to claim 1 or 2, Check valve, A connecting pipe interconnecting the end portion of the dewatering flow passage and the drainage passage and the discharge hose; A first hole formed in an inner wall of the connection pipe and having a diameter similar to that of the dehydration flow path; A second hole formed in the inner wall of the connecting pipe and having a diameter similar to that of the drain passage; Rotatingly provided in the connecting pipe, by the pressure difference between the dewatering flow path and the drainage flow path, characterized in that consisting of a stopper that can open only the first hole when dewatering when opening only the second hole when draining Vibration reduction device of the drum washing machine. delete

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