KR20030037779A - structure of injecting additive in Washing machine - Google Patents

Abstract

PURPOSE: Additive input structure for a washing machine is provided to prevent damage of the laundry efficiently by automatically putting the bleaching or fiber softening agent through a tub cover and restricting counter flow of washing water through the additive inlet. CONSTITUTION: A washing machine comprises an outer case(4); an outer tub(1) installed in the outer case; a washing tub(2) rotatably installed in the outer tub and composed of plural through holes in the outer periphery; a top cover(14) mounted on the outer case and composed of an additive storage chamber(15) for storing additives like bleaching and fiber softening agents; a tub cover(10) having an additive inlet hole(20) for supplying additives from the additive storage chamber inside the upper part of the outer tub; and a counter flow preventive unit formed around the additive inlet hole to restrict counter flow of washing water through the additive inlet hole in washing. The bleaching or fiber softening agent is input to the tub cover of the permeable washing machine, and counter flow of washing water is prevented.

Description

Structure of injecting additive in Washing machine

The present invention relates to a washing machine capable of adding additives such as bleach or fabric softener, and more particularly, to an additive inlet instead of bleach or fabric softener in a permeable washing machine forming a two-way shower water, through a tub cover. Backflow of the wash water through is to be prevented.

In general, permeation washing is a method in which washing is performed while the permeate stream formed by the high speed rotation of the washing tank or the washing blade passes between the laundry and the ol.

1 is a longitudinal sectional view showing an example of a conventional washing machine, Figures 2a and 2b is a plan view and a bottom view showing only the tub cover of Figure 1, showing an example of a permeable washing machine to form a two-way shower water.

Looking at the configuration of a conventional transmission washing machine, the outer tank (1) is a storage tank is installed inside the outer case (4), the washing tank (2) is installed in the outer tank (1) and the outer tank (1) is an outer case ( 4) It is supported by a snubber bar 3 installed at each corner of the upper end.

In addition, a tub cover 10 is installed at an upper end of the outer tub 1 to prevent a phenomenon in which foam generated during washing overflows and flows through the outer wall of the tub to adversely affect the insulation of the driving unit. 14 is installed.

On the other hand, the washing tank (2) is a place where laundry and detergent are put, a plurality of through-holes are formed on the outer circumference, and the washing blade (9) is mounted on the bottom surface.

One side of the outer surface of the outer tub 1 is equipped with a motor 5, a clutch 7 for selectively transmitting the rotational force to the washing tank 2 and the washing blade 9 in the lower center is installed.

In addition, a driving pulley and a driven pulley are installed at the shaft end of the motor 5 and the shaft end of the clutch 7, respectively, and a timing belt 6 is wound between the driving and driven pulleys 8.

Then, a water supply valve 200 for controlling the supply of water through the water supply pipe from the outside is installed on one side of the rear of the outer case 4, the other side of the rear of the outer case 4 for detecting the water level in the washing tank (2) The water level sensor 11 is installed.

The microcomputer 13 controls the water supply by the water level sensor 11.

In addition, the lower side of the outer tank (1) is provided with a drain valve 300 for discharging the water discharged through the through-hole of the washing tank (2) during the washing, rinsing, dehydration process to the outside.

The conventional permeable washing machine configured as described above performs washing by forming a permeate stream by the high speed rotation of the washing blade or the washing tank 2 during washing.

At this time, it is possible to form a permeate stream in both directions.

That is, when the washing tank 2 or the washing vanes rotate in the forward direction, the pumped water flows up from the bottom along the wall of the outer tank 1 and flows through the lower surface of the tub cover 10 as shown in FIG. 2B in a solid line. While discharged into the washing tank (2) through one side discharge port (10a), when the washing tank (2) or the washing blade is rotated at a high speed again, the pumped water flows up from the bottom along the wall of the outer tank (1) to guide (10c) Under the guidance of the tub cover 10, as shown by the dotted line in FIG. 2b flows and is discharged into the washing tank 2 through the other discharge port (10b).

On the other hand, such a permeable washing method can be washed and rinsed by pumping even while filling the washing tank 2 with a little water, drainage and water supply time is reduced, thereby reducing the overall washing time.

However, the conventional permeable washing machine does not have a structure in which additives such as bleach or fabric softener are introduced through the tub cover 10.

Therefore, when the addition of additives such as bleach is required, the user has to open the washing machine lid directly and inject the additive into the washing tank 2.

In particular, when the bleach is added, there is a problem such as causing a discoloration of the laundry if the time is not appropriate.

In other words, if the wash water is not sufficiently supplied in the washing tank 2 or if the bleach is directly sprayed on the laundry while the laundry is not sufficiently wetted with the washing water, the laundry will be discolored. There was a very high concern.

The present invention is to solve the above problems, while providing a structure in which the bleach or fabric softener can be introduced through the tub cover in the permeable washing machine to form a two-way shower water, the permeability that occurs in such a structure The purpose of the laundry to prevent the backflow of the washing water through the bleach or fiber softener inlet of the tub cover is effectively.

1 is a view showing a structure of a conventional washing machine, a longitudinal cross-sectional view showing the structure of a permeable washing machine for forming a two-way shower water;

FIG. 2A is a top view of the tub cover of FIG. 1

Figure 2b is a bottom view of the tub cover of Figure 1

3 is a detailed vertical cross-sectional view showing the technical essential part of the present invention, which is a first embodiment of the present invention applied to part A of FIG.

4 is a top view of the tub cover of FIG.

5 is a longitudinal sectional view showing a main part of the technology according to the second embodiment of the present invention;

6A is a top view of the tub cover of FIG. 5.

Figure 6b is a bottom perspective view of the tub cover of Figure 5

Explanation of symbols on the main parts of the drawings

1. Outer tub 2. Washing tub

3. Snubber bar 4. Outcase

5. Motor 6. Timing Belt

7. Clutch 9. Washing wing

10. Tub cover 10a, 10b.

10c.Guide 10d. Current Information Board

100.Vertical Output Rib 100a: Vertical Rib

110, 110a.Horizontal rib 120.Vertical inner rib

100a.vertical rib 130.shielded rib

12. Fluid balancer 14. Top cover

15. Additive compartments 16. Diaphragms

17. Water line 18. Siphon for adding additive

19. Guide baffle 20. Additive inlet

200. Water supply valve 210. Water supply line

In order to achieve the above object, the present invention provides an outer case, an outer tub provided inside the outer case and having a tub cover at an upper end thereof, and a washing tub rotatably installed inside the outer tub and having a plurality of holes formed on an outer circumferential surface thereof. In the permeable washing machine comprising a top cover mounted on the outer case; An additive storage chamber such as bleach or fabric softener is provided on the top cover, and an additive inlet port is provided on the tub cover below the additive storage chamber to allow the additive supplied from the additive storage chamber to enter the space under the tub cover. An additive injecting structure is provided around the additive inlet, wherein a backflow preventing means is provided to prevent backflow of the wash water to the upper portion of the tubular cover during the permeation washing.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6B.

First, a first embodiment of the present invention will be described with reference to FIGS. 3 and 4.

3 is a vertical cross-sectional view showing a main part of the present invention, which is a first embodiment of the present invention applied to part A of FIG. 1, and FIG. 4 is a top view of the tub cover of FIG.

The permeable washing machine according to the first embodiment of the present invention is installed on the outer circumferential surface of the outer case (4), the outer tub (1) installed inside the outer case (4), and rotatably installed inside the outer tub (1). Wash tub (2) formed with a plurality of holes, the top cover 14 mounted on the outer case 4, and the top cover 14 is provided on the top cover 14 to accommodate additives such as bleach or fabric softener The additive storage chamber 15 is formed around the permeate flow outlet 10a, 10b of the 10 and the upper end of the outer tank 1 under the top cover 15 and is supplied from the additive storage chamber 15. A tub cover 10 having an additive inlet 20 for introducing an additive into the lower space thereof is provided around the additive inlet 20 of the tub cover 10 and through the additive inlet 20 during washing. It includes a backflow prevention means for preventing the backflow of the wash water All.

At this time, the reverse flow prevention means, the vertical outer which extends downward from the inner peripheral surface of the tub cover 10 of the additive inlet 20 to rise along the wall of the outer tank 1 to interfere with the water flow toward the washing tank 2 A vertical inner rib 120 extending downward from the inner circumferential surface of the additive inlet 20, but having a shorter length than the vertical outer rib 100, and the vertical outer rib 100. A horizontal rib 110 is formed at the bottom of the rib 100 and extends in the tub cover 10 of the additive inlet 20 to cover the additive inlet 20.

On the other hand, the outer surface of the vertical outer rib 100 and the vertical inner rib 120 is formed to have a predetermined inclination angle so that the inflow of additives is easy while the reverse flow of the wash water is difficult.

At this time, the inclination angle of the outer surface of the vertical outer rib 100 and the vertical inner rib 120 is preferably within the range of 5 degrees to 30 degrees.

On the other hand, the additive inlet 20 may be formed in plural, the formation position is preferably formed in the region between the outer tank 1 and the washing tank 2, the above-described configuration around each of the additive inlet 20 Of course, the reverse flow prevention means may be provided.

In addition, a guide baffle 19 may be formed around the additive inlet 20 of the upper surface of the tub cover 10 to guide the additive falling from the additive storage chamber 15 to the inlet 20. Guide baffle 19 is preferably formed to form a wider width toward the top.

In addition, in the portion corresponding to the additive inlet 20 of the additive storage chamber 15, when the additive contained in the additive storage chamber 15 or more than a predetermined liquid level, the additive is introduced into the tub cover 10 upper surface An additive input siphon 18 is installed.

Meanwhile, a water supply pipe 17 for supplying water to the additive storage chamber 15 to raise the liquid level of the additive to cause the siphon phenomenon is connected to the other side of the additive storage chamber 15.

The operation of the present invention according to the first embodiment configured as described above will be described by taking the case of bleach input as an example.

First, the washing machine lid is opened and the bleach is put into the additive storage chamber 15 formed concave on the top cover 14.

At this time, on the inner wall of the additive storage chamber 15 or on the outer circumferential surface of the siphon 18, a scale indicating the amount of the additive is displayed, so that the user can add an appropriate amount of the additive.

On the other hand, after putting the laundry in the washing tank 2, after closing the washing machine lid and pressing the washing start button, the amount of water is detected, the water supply valve 200 is opened according to the control of the microcomputer 13, and set according to the amount of Water is supplied to the washing tank 2 through the water supply pipe 110 until the water level is reached.

In this way, when the water level in the washing tank 2 reaches the water supply level set according to the quantity, permeation washing is performed. The additive storage is carried out through the water supply pipe 17 connected to the additive storage chamber 15 just before permeation washing. Water is also supplied to the chamber 15.

At this time, the siphon 18 has a predetermined height, and the bleach is filled by the siphon phenomenon until the bleach is diluted by the water supplied to the additive storage chamber 15 and thus the tip of the siphon 18 is filled up. It is introduced into the siphon 18.

As such, the bleach introduced into the siphon 18 falls into the inner region of the guide baffle 19 formed on the tub cover 10 positioned directly below the additive storage chamber 15.

That is, the guide baffle 19 prevents the bleach from flowing out of the outer tub 1.

The bleach guided by the guide baffle 19 is introduced into the space below the tub cover 10 through the additive inlet 20.

In this case, the bleaching agent flows into the tub cover 10 through the vertical outer rib 100, the vertical inner rib 120, and the horizontal rib 110 formed around the additive inlet 20.

On the other hand, it is preferable to add the bleach to the washing tank 2 after the completion of the water supply to the water supply level according to the quantity, as described above, if the water is lacking or insufficient water bleaching agent due to the bleaching agent partially bleaching the phenomenon This is to prevent.

When the washing stroke is started in the state where the bleach is added, the washing tank 2 or the washing wings 9 are rotated at high speed to form permeate flow, thereby permeating washing.

At this time, the permeated water flowing out of the washing tank 2 flows through the bottom surface of the tub cover 10 and is discharged again into the washing tank 2 under the guidance of the water flow guide plate 10d. Since the backflow preventing means is provided around the additive inlet 20, the phenomenon that the washing water flows back to the tub cover 10 through the additive inlet 20 is prevented.

That is, the permeated water flows up from the bottom along the wall surface of the tub cover 10 flows through the bottom surface of the tub cover 10, and the washing tank is guided along the direction of the arrow shown in FIG. 2), the reverse direction of the water flow through the additive inlet 20 is prevented due to the vertical outer rib 100 and the horizontal rib 110 provided around the additive inlet 20.

In more detail, during permeation washing, the outer outer circumferential surface of the tub cover 10 of the additive inlet 20 is provided with a vertical outer rib 100 extending downward, and the vertical outer rib 100 At the bottom of the) is provided with a horizontal rib (110) (horizontal rib) is formed extending in the tub cover 10 inward direction of the additive inlet 20 to cover the additive inlet (20), outer wall (1) The water flows up toward the washing tank 2 by the guide of the water flow guide plate 10d does not flow into the additive inlet 20 due to the interference of the vertical outer rib 100 and the horizontal rib 110.

In particular, the inner inner circumferential surface of the tub cover 10 of the additive inlet 20 is formed with a vertical inner rib 120 as a safety device, even if there is a current flowing back from the tip of the horizontal rib 110, the vertical inner rib 120 ), The flow of water flow is once again blocked, so that backflow is certainly prevented.

On the other hand, the outer surface of the vertical outer rib 100 and the vertical inner rib 120 is formed to have a predetermined inclination angle, to facilitate the introduction of additives while the reverse flow of the wash water is difficult to work.

Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 5 to 6B.

FIG. 5 is a longitudinal cross-sectional view illustrating a main portion of the technology according to the second embodiment of the present invention. FIG. 6A is a top view of the tub cover of FIG. 5, and FIG. 6B is a bottom perspective view of the tub cover of FIG. 5.

The permeable washing machine according to the second embodiment of the present invention is installed on the outer circumferential surface of the outer case (4), the outer tub (1) installed inside the outer case (4), and the outer tub (1). Wash tub (2) formed with a plurality of holes, the top cover 14 mounted on the outer case 4, and the top cover 14 is provided on the top cover 14 to accommodate additives such as bleach or fabric softener The additive storage chamber 15 is formed in an area between the two permeate water flow outlets 10a and 10b of FIG. 10 and the upper end of the outer tub 1 under the top cover 15 and accommodates the additive. The tub cover 10 having the additive inlet 20 for introducing the additive supplied from the seal 15 into the lower space thereof is provided at the periphery of the additive inlet 20 of the tub cover 10. Backflow prevention water to prevent backflow of wash water through the additive inlet (20) It consists of stages.

At this time, the backflow prevention means, the vertical rib extending from the inner circumferential surface of the outer side of the tub cover 10 of the additive inlet 20 to rise along the wall of the outer tank (1) to interfere with the water flow toward the washing tank (2) (100a: vertical rib) and the horizontal rib (110a) formed extending from the lower end of the vertical rib (100a) in the tub cover 10 of the additive inlet 20 to cover the lower portion of the additive inlet (20a): It comprises a horizontal rib) and the shielding rib 130 is formed perpendicular to the permeate flow passage direction on both sides of the additive inlet (20).

On the other hand, the vertical rib 100a and the shielding rib 130 may be formed to have a predetermined inclination angle so that the inflow of additives is easy while the reverse flow of the wash water is difficult.

At this time, the inclination angle of the vertical rib 100a and the shielding rib 130 is preferably within the range of 5 degrees to 30 degrees.

In addition, the shielding rib 130 is formed longer than the width (W) of the additive inlet 20 in the radially inward direction of the tub cover 10 so as to cover the additive inlet 20.

On the other hand, the additive inlet 20 may be formed in plural, the formation position is preferably formed in the region between the outer tank 1 and the washing tank 2, the above-described configuration around each of the additive inlet 20 Of course, the reverse flow prevention means may be provided.

In the second embodiment, a guide baffle 19 is formed around the additive inlet 20 on the upper surface of the tub cover 10 to guide the additive falling from the additive storage chamber 15 to the inlet 20. In addition, in the portion corresponding to the additive inlet 20 of the additive storage chamber 15, when the additive contained in the additive storage chamber 15 is greater than or equal to a predetermined liquid level, the additive may flow into the upper surface of the tub cover 10. The additive siphon 18 is installed in the same manner as in the first embodiment.

Referring to the operation of the present invention according to the second embodiment configured as described above is as follows.

The same parts as the above-described first embodiment will be omitted and detailed description will be given based on differences.

First, the washing machine lid is opened and the bleach is put into the additive storage chamber 15 formed concave on the top cover 14.

On the other hand, after the laundry is put into the washing tank 2, when the washing machine lid is closed and the washing start button is pressed, the amount of water is detected under the control of the microcomputer 13, and then the water supply valve 200 is opened and the water level is set according to the amount of water. Water is supplied to the washing tank 2 through the water supply pipe 110 until it reaches.

In this way, when the water level in the washing tank 2 reaches the water supply level set according to the quantity, permeation washing is performed. The additive storage is carried out through the water supply pipe 17 connected to the additive storage chamber 15 just before permeation washing. Water is also supplied to the chamber 15.

At this time, the siphon 18 has a predetermined height, and the bleach is filled with the siphon 18 only when the bleach is diluted by the water supplied to the additive storage chamber 15, and thus the height of the front end of the siphon 18 is filled. Will flow into.

As such, the bleach introduced into the siphon 18 is dropped into the inner region of the guide baffle 19 formed on the tub cover 10 positioned directly below the additive storage chamber 15.

That is, the guide baffle 19 prevents the bleach from flowing out of the outer tub 1.

The bleach guided by the guide baffle 19 is introduced into the space below the tub cover 10 through the additive inlet 20. At this time, the bleach is guided by the vertical ribs 100a and the horizontal ribs 110a formed around the additive inlet 20 and flows into the tub cover 10 space below.

On the other hand, when the washing stroke is started in the state where the addition of the bleach is completed, the washing tank (2) or the washing blade (9) is rotated at high speed to form a permeate flow, thus permeate washing is made. At this time, the permeate stream exiting the tub 2 flows through the bottom surface of the tub cover 10 and is discharged back into the tub 2 through the permeate stream outlets 10a and 10b, where the permeate stream is the tub. When passing through the additive inlet 20 provided between the two outlets 10a and 10b during the flow in the lower surface of the cover 10, the shielding rib 130 is provided on the water flow direction of the additive inlet 20. Washing water is prevented from flowing back toward the tub cover 10 through the additive inlet 20.

In addition, the lower side of the additive inlet 20 is formed in the bottom of the vertical rib (100a) extending in the tub cover 10 inward direction of the additive inlet 20 to cover the lower portion of the additive inlet (20) ( 110a) (horizontal rib) is provided, even if the backflow prevention function is not completely made by the shielding rib 130, the reverse flow through the additive inlet 20 of the permeate flow proceeds in both directions by the horizontal rib (110a) By being blocked secondarily, the present invention prevents a more reliable reverse flow of the water stream.

In addition, the vertical rib 100a and the shielding rib 130 may be formed to have a predetermined inclination angle. In this case, as in the above-described embodiment, the inflow of the additive may be facilitated while the backflow of the washing water may be difficult. It will work.

On the other hand, in the case of forming the configuration except for the shield rib 130 in the additive injection structure according to the second embodiment on the discharge port (10a, 10b) side of the tub cover 10, the same operation as in the first embodiment can be expected. It will be easy to understand.

On the other hand, in the case of the rinsing stroke, the addition of the fabric softener instead of the bleach as an additive is different, the addition of additives and the formation of water flow is made in the same process.

And, in the above, after the completion of the water supply according to the amount, the additive is automatically added, but the washing or rinsing is started, the water supply to the additive storage chamber during the formation of the two-way shower water may be added to the additive storage.

The present invention is not limited to the above embodiments, and various changes and modifications can be made in various forms without departing from the scope of the technical idea of the present invention.

As described above, the present invention provides a structure in which a bleach or a fabric softener can be introduced through a tub cover in a permeable washing machine forming a bidirectional shower water, while washing in permeable washing, which is a phenomenon that may occur in this structure. The backflow of water through the bleach or fiber softener inlet of the tub cover is prevented.

Accordingly, it is possible to automatically add additives such as bleach or fabric softener, and it is possible to provide a washing machine which can effectively prevent the damage of laundry due to the direct bleach input.

Claims (19)

Outcase, An outer tub installed inside the outer case, A washing tub rotatably installed inside the tub and having a plurality of through holes formed on an outer circumferential surface thereof; A top cover mounted on the outer case, An additive storage chamber provided on an upper surface of the top cover to accommodate additives such as bleach or fabric softener; A tub cover provided at an upper end of the outer tub and having an additive inlet formed at one side in a circumferential direction thereof so that the additive supplied from the additive storage chamber is introduced into the lower space thereof; Permeation type washing machine characterized in that it is provided around the additive inlet of the tub cover to prevent the reverse flow of the wash water through the additive inlet during the permeation washing. The method of claim 1, The backflow prevention means, A rib extending downward from one side of the inner circumferential surface of the tub cover of the additive inlet to rise along the outer tank wall during washing to interfere with the permeate flow toward the washing tank; And a rib extending from the lower end of the vertical outlet to the inner side of the tub cover of the additive inlet to cover the additive inlet. Outcase, An outer tub installed inside the outer case, A washing tub rotatably installed inside the tub and having a plurality of through holes formed on an outer circumferential surface thereof; A top cover mounted on the outer case, An additive accommodating chamber provided on an upper surface of the top cover to accommodate additives such as bleach or fabric softener, and formed around a permeate outlet of the tub cover; A tub cover provided at an upper end of the outer tub and having an additive inlet for introducing an additive supplied from the additive storage chamber into a lower space thereof; Permeation type washing machine characterized in that it is provided around the additive inlet of the tub cover to prevent the reverse flow of the wash water through the additive inlet during the permeation washing. The method of claim 3, wherein The backflow prevention means, A vertical outer rib extending downward from the inner circumferential surface of the tub cover of the additive inlet to rise along the outer tank wall and interfere with the water flow toward the washing tank; A vertical inner rib extending downward from the inner inner circumferential surface of the additive inlet, and having a shorter length than the vertical outer rib; And a horizontal rib extending from the lower end of the vertical outlet to the inner side of the tub cover of the additive inlet to cover the additive inlet. The method of claim 4, wherein The vertical outer rib and the vertical inner rib is permeable washing machine, characterized in that the outer surface is inclined at a predetermined angle so that the inflow of additives is easy while the reverse flow of the wash water is difficult. The method of claim 5, Permeable washing machine, characterized in that the inclined angle of the outer surface of the vertical outer rib and the vertical inner rib is in the range of 5 to 30 degrees. The method according to claim 1 or 3, A plurality of additive inlet is formed, the forming position is a transmission type washing machine, characterized in that the area between the outer tub and the washing tank. The method of claim 7, wherein And a guide baffle is formed around the additive inlet of the tub cover to guide the additive falling from the additive storage chamber to the inlet. The method of claim 8, In the additive storage room, The additive washing machine, characterized in that the additive siphon is installed to be introduced into the guide baffle on the upper surface of the tub cover when the additive contained in the additive compartment is more than a predetermined liquid level. The method of claim 8, On the other side of the additive storage chamber, And a water supply pipe for supplying water to the additive storage chamber to raise the liquid level of the additive to cause a siphon phenomenon. Outcase, An outer tub installed inside the outer case, a washing tub rotatably installed inside the outer tub, and having a plurality of through holes formed on an outer circumferential surface thereof; A top cover mounted on the outer case, An additive accommodating chamber provided on an upper surface of the top cover to accommodate additives such as bleach or fabric softener, and formed in an area between the two permeate outlets of the tub cover; A tub cover provided at an upper end of the outer tub and having an additive inlet for introducing an additive supplied from the additive storage chamber into a lower space thereof; Permeation type washing machine characterized in that it is provided around the additive inlet of the tub cover to prevent the reverse flow of the wash water through the additive inlet during the permeation washing. The method of claim 11, The backflow prevention means, A vertical rib extending downward from the inner circumferential surface of the tub cover of the additive inlet to rise up along the outer tank wall and interfere with the water flow toward the washing tank; A horizontal rib extending from the lower end of the vertical rib toward the inside of the tub cover of the additive inlet to cover the lower portion of the additive inlet; Permeation type washing machine characterized in that it comprises a shielding rib which is formed perpendicular to the permeate flow passage direction of both sides of the additive inlet. The method of claim 12, The shielding rib is permeable washing machine, characterized in that formed longer than the width of the additive inlet in the tub cover radially inwardly so as to cover the additive inlet. The method according to claim 12 or 13, The outer surface of the vertical ribs and shielding ribs are permeable washing machine, characterized in that the inlet is easy to inflow of the additives, but is formed to be inclined at a predetermined angle so that the back flow of the wash water is difficult. The method of claim 14, The inclination angle of the outer surface of the vertical ribs and the shielding ribs fall within the range of 5 degrees to 30 degrees. The method of claim 11, The additive inlet is formed in a plurality in the circumferential direction of the permeate flow progress direction, the permeation type washing machine, characterized in that the backflow prevention means is provided around each of the additive inlet. The method of claim 16, Around the additive inlet of the upper surface of the tub cover, The guide baffle is formed so that the additive falling from the additive storage chamber is guided to the inlet, the guide baffle is characterized in that the width becomes wider toward the top. The method of claim 16, In the additive inlet of the additive storage chamber, When the additive contained in the additive storage chamber is more than a certain liquid level, a permeation type washing machine, characterized in that the additive siphon for introducing the additive is introduced into the guide baffle on the upper surface of the tub cover. The method of claim 18, And a water supply pipe connected to the other side of the additive storage chamber to supply water to the additive storage chamber to raise the liquid level of the additive to cause a siphon phenomenon.