JP4555327B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine, and more particularly to a drum-type washing machine that can improve cleaning performance and shorten cleaning time.

  In general, a drum type washing machine performs so-called washing by rotating a drum. That is, in this drum type washing machine, the drum is rotatably arranged in the water tank, and a plurality of baffles are provided inside the drum. Then, clothes and the like are put into the drum, water and detergent are supplied, and the drum is rotated by a motor, whereby the baffle scoops up the clothes and the like in the drum and stirs and is washed.

In this case, the amount of water is reduced to give mechanical power by tapping, so that the detergent solution penetrates only the clothing under the drum, and the detergent solution spreads throughout the clothing. It takes time and requires long washing time.
To solve such problems, when multiple hollow baffles are provided with openings for the detergent solution to flow in and out, the detergent solution is stored in the baffle when the hollow baffle is at the bottom of the drum, and the baffle comes to the top of the drum. There has been proposed a method in which a detergent solution is spread over clothes or the like by dropping the detergent solution onto the upper surface of the clothes or the like (see, for example, Patent Document 1).

JP-A-8-266777

However, even with such a configuration, the detergent solution cannot be sufficiently applied to the upper part of the clothing, and it is difficult to shorten the washing time.
The present invention has been made to solve such problems, and aims to further improve the cleaning performance and shorten the cleaning time in a drum type washing machine.

In order to achieve the above object, the present invention
A drum-type washing machine comprising a water tank and a cylindrical drum rotatably disposed in the water tank, in which clothes are put in the drum and the drum is rotated by a motor to wash the clothes, etc. In the machine
Before the washing process, dissolve the detergent with a small amount of water to produce a high-concentration detergent liquid, and apply the high-concentration detergent liquid produced in the high-concentration detergent liquid production process to clothes, etc. A high-concentration detergent liquid permeation step for infiltrating, and a means for performing
In the high-concentration detergent liquid generating step, water is supplied to such an extent that the lower part of the drum is in contact with the water surface, and the detergent is sent to the lower part of the water tank, and the detergent is dissolved by rotating the drum at a resonance speed or less It has a process.

  Moreover, in this drum type washing machine, the heater provided in the lower part of the water tank is driven only in the high-concentration detergent liquid production process.

  Furthermore, this drum type washing machine has one or more baffles that are hollow and have a substantially trapezoidal cross section inside the drum. When washing, the drum is opened outside the drum to scoop up washing water and dewater it. In some cases, a movable blade is provided so as to be in contact with the drum.

  Further, in this drum type washing machine, baffles are provided at three positions at equal intervals, and in the high-concentration detergent liquid infiltration process, a water amount of about 1.5 times the amount of clothes and the like is supplied into the aquarium to increase the amount of water. After diluting the concentrated detergent solution and rotating the drum with blades by approximately 120 °, stop or slow the rotation and repeat the operation of spraying the concentrated detergent solution on clothing etc., so that the concentrated detergent solution penetrates To.

  In the drum-type washing machine of the present invention, a high-concentration detergent solution penetration step is provided in which a high-concentration detergent solution generation step for dissolving detergent with a small amount of water is provided before the washing step, and the high-concentration detergent solution is applied to clothes and the like. By providing the process, in the subsequent washing process, the dirt attached to the clothes is easily dissolved by the high-concentration detergent solution, and therefore the dirt can be removed with a small mechanical force. Accordingly, the cleaning time can be shortened, and since the high concentration detergent solution is spread throughout the clothing and the like, there is an effect that there is little unevenness in washing and the cleaning performance can be improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 3 show a first embodiment of the present invention. FIG. 1 is a longitudinal side view showing the inside of a drum-type washing machine equipped with a high-concentration detergent liquid generating means according to the present invention. FIG. FIG. 3 is a perspective view of the baffle.

As shown in FIG. 1, there is a laundry inlet on the front of the case 1 of the drum-type washing machine, and a door 2 is provided there, and this door 2 is opened to put clothes in and out of the laundry. To do.
Inside the housing 1, there is disposed a cylindrical water tank 3 which is inclined with the inlet side facing upward at an angle of 10 to 20 ° from the horizontal, and the inlet side is open. The inlet and the opening of the water tank 3 are connected by a bellows-like rubber bellows 6 so that the clothes and the like do not fall into the housing 1 when the clothes are put in and out.

Inside the water tank 3, a cylindrical drum 4 having an inlet side opened is rotatably arranged. A large number of small holes 10 are formed in the drum 4, and clothes and the like 17 that are laundry are put into the drum 4 from the charging port. A rotating shaft 9 is fastened to the center of the rear surface of the drum 4, and the rotating shaft 9 is sealed and supported by the rear surface of the water tank 3 in a watertight manner and in a rotatable state.
A motor 5 that rotationally drives the drum 4 is attached to the back surface of the water tank 3, and a rotating shaft 9 of the drum 4 is connected to the rotating shaft of the motor 5.

With this configuration, the drum 4 rotates in the water tank 3 both left and right by driving a motor 5 provided on the back surface of the water tank 3, and each operation of washing, rinsing, and dewatering is performed while rotating the drum 4. .

The water tank 3 to which the drum 4 and the motor 5 are attached is supported from the housing 1 by a spring and a damper (not shown) and suppresses vibration.
In addition, a drain valve 30 and a drain hose 31 are provided below the water tank 3 to drain the washing water out of the washing machine.

The drum 4 has a baffle 18 projecting from the inner wall of the drum 4 for picking up clothes 17 and the like when washing. The baffles 18 are provided at equal intervals at three locations on the inner periphery of the drum, but only one is shown in the figure.
The baffle 18 is hollow and is formed long in parallel with the rotation axis direction of the drum 4, and its cross-sectional shape is substantially trapezoidal. A plurality of small holes 20 are formed in the upper surface of the baffle 18 and the upper portions of the side surfaces.

A heater 19 for warming the washing water is attached to the inner lower part of the water tank 3.
The washing water supply means includes a faucet connection port 12 arranged at the upper part of the housing 1, a main water supply electromagnetic valve 13 b and an auxiliary water supply electromagnetic valve 13 a connected to a water injection port 14 arranged at the upper part of the water tank 3. The

The operation of the drum type washing machine of the present embodiment configured as described above is executed and controlled by a microcomputer which is a control means. And in the operation of this drum type washing machine, it has a high-concentration detergent liquid generating step of generating a high-concentration detergent liquid by first dissolving the detergent with a small amount of water before the washing process, There is provided a high-concentration detergent liquid permeation step for allowing clothes to fall and permeate.

First, a high concentration detergent liquid production | generation process is demonstrated.
In this high-concentration detergent liquid production step, a small amount of detergent-dissolved water (tap water) is supplied from the auxiliary water supply electromagnetic valve 13 a to the detergent-dissolve container 15 provided in front of the upper part in the housing 1. The powder synthetic detergent put in is dissolved in detergent-dissolved water while stirring with an electrically driven stirring blade, and an operation of generating a high-concentration detergent liquid is performed. In addition, the high concentration detergent liquid produced | generated here has a density | concentration of 80-500 times the detergent density | concentration (regular density | concentration of detergent) at the time of normal washing.

Next, the high concentration detergent liquid permeation step will be described.
The high-concentration detergent solution generated in the detergent dissolution container 15 is supplied into the water tank 3 from a water injection port 14 that is a supply port provided in the upper part of the water tank 3 toward the inside of the drum. Here, the means for supplying the high-concentration detergent liquid has an electromagnetic valve 16 connected to the water inlet 14 in the detergent dissolution container 15, and opens the electromagnetic valve 16 and the main water supply valve 13b to make the high-concentration detergent liquid into the laundry. It is configured to be diluted (5 to 20 times) to a detergent concentration preferable for permeation and supplied to the water inlet 14.
Further, as another means for supplying the high-concentration detergent solution, an overflow portion (not shown) connected to the water supply port 14 is provided in the detergent dissolution container 15, and the generated high-concentration detergent solution is diluted with further water supply (diluted water supply). By increasing the amount, the water may be overflowed from the overflow portion and supplied to the water inlet 14.
Here, the water inlet 14 is branched into two front and rear.

With such a configuration, a high concentration detergent solution is supplied into the water tank 3, but there is a cylindrical surface of the drum 4 between the clothing etc. 17 and the water inlet 14, and the high concentration detergent solution falls on the entire clothing etc. 17. It is difficult to apply. Therefore, a high-concentration detergent solution is applied to the clothing 17 or the like by the method shown below and penetrated.

That is, the motor 5 is rotated so that one of the three baffles 18 provided on the inner wall of the drum 4 is positioned below the water inlet 14. At this time, as a means for controlling the rotational position of the baffle 18, a magnet 21 indicating the position of the baffle 18 is provided in the motor 5, and a hall element 23 for detecting the magnet 21 is provided on the back surface of the water tank 3. The hall element 23 is fixed at a position corresponding to the water inlet 14 in the circumferential direction of the water tank 3, and the magnet 21 is fixed at a position corresponding to the baffle 18 in the circumferential direction of the drum 4, thereby The rotational position is detected and the motor 5 is controlled.

As shown in FIG. 3, a hollow auxiliary baffle 25 extending from the baffle 18 is provided on the inner wall of the drum 4. The auxiliary baffle 25 is formed long in the circumferential direction of the drum at a position corresponding to the water inlet 14. Further, the cross-sectional shape of the auxiliary baffle 18 is substantially trapezoidal like the baffle 18, and a plurality of small holes 26 are provided on the upper surface and upper portions of the side surfaces.

Then, on the cylindrical surface of the drum 4 constituting the bottom surface of the baffle 18 and the auxiliary baffle 25, as shown in FIG. As a result, the high-concentration detergent liquid supplied from the water inlet 14 is fed into the baffle 18 and the auxiliary baffle 25 from the long hole 27, and the clothes are provided through the numerous holes 20 and 26 provided in the upper part of the baffle 18 and the auxiliary baffle 25. 17 will be sprayed.

Here, the long hole 27 has an opening area wider than that of the water inlet 14, whereby all of the high-concentration detergent liquid supplied from the water inlet 14 can be injected into the baffle 18 and the auxiliary baffle 25. Yes. Further, since the auxiliary baffle 25 is provided and the long hole 27 is long in the circumferential direction of the drum, the baffle 18 and the auxiliary baffle 25 have a high height even if the rotational position of the baffle 18 is not strictly positioned below the water inlet 14. It becomes possible to inject a concentrated detergent solution.

Two water injection ports 14 are provided at the front and rear, and the baffle 18 is correspondingly partitioned by a partition plate 28 in the front and rear. That is, since the drum 4 is inclined, the high-concentration detergent solution tends to accumulate in the baffle 18, so that the clothes located in the front of the drum 4 are not easily sprayed with the high-concentration detergent solution. In order to improve this, the baffle 18 is divided into front and rear by a partition plate 28 corresponding to the two front and rear water injection ports 14 so that the high-concentration detergent solution can be sprayed substantially evenly in the front and rear.

Further, the total area of the small holes 20 provided in the upper part of the baffle 18 is set to be equal to or larger than the opening area of the water inlet 14 so that the supplied high-concentration detergent solution can be smoothly sprayed on the clothes 17. Further, since the surface of the auxiliary baffle 25 is narrower than the baffle 18, the total area of the holes 26 provided in the auxiliary baffle 25 cannot be increased, but it can be brought close to the area of the water inlet 14. The auxiliary baffle 25 and the baffle 18 communicate with each other, and the high-concentration detergent liquid injected into the auxiliary baffle 25 is sprayed from the hole 26 to the clothing 17 and flows into the baffle 18, and the hole 20 provided in the baffle 18. Is sprayed on the clothes 17 as well.

With the above configuration, the high-concentration detergent liquid is sprayed and penetrated on the upper surface of the clothing 17 or the like from the plurality of holes 20 and 26 provided in the baffle 18 and the auxiliary baffle 25.
Further, in order to infiltrate the entire clothes 17 or the like with the high-concentration detergent liquid, the motor 5 is driven to rotate the drum 4 and the high-concentration detergent liquid is sprayed from another similarly configured baffle 18. Due to the rotation of the drum 4, the arrangement of the clothing 17 and the like is changed, and the surface on which the high-concentration detergent solution has not yet spread appears on the upper surface. By repeating this several times, the high-concentration detergent solution can be sprayed and permeated throughout the clothing 17 and the like.
Further, if the electromagnetic valve 16 provided in the detergent dissolution container 15 is closed while the drum 4 is rotating, the high-concentration detergent can be used without any waste without falling on the peripheral surface of the drum 4. This is desirable because the liquid can be applied to clothing 17 or the like.

Also, when there are many clothes 17 to be washed, before the high-concentration detergent solution is sprayed, the main water supply electromagnetic valve 13b is opened and a small amount of water is supplied to the clothes 17 so that the upper surface of the clothes 17 is lowered due to moisture. Can be widely sprayed with high concentration detergent solution.

Then, after spraying high-concentration detergent liquid on the clothing 17 or the like as described above, the main water supply electromagnetic valve 13b is opened to supply water so that the inside of the water tank 3 has a predetermined amount of washing water, and the motor 5 is operated. The drum 4 is rotated in both the left and right directions, and a normal washing process by tapping is performed. Here, the high-concentration detergent solution sprayed in the previous process makes it easy for the dirt attached to the clothes 17 to dissolve, and it is possible to remove the dirt sufficiently with a small mechanical force. Therefore, the cleaning time can be shortened. In addition, since the high-concentration detergent solution is distributed throughout the clothing 17 and the like, there is little unevenness in washing and the washing performance can be improved.

Next, a drum type washing machine using the drum shown in FIGS. 4 and 5 will be described as a second embodiment of the present invention. FIG. 4 is a longitudinal side view of the drum, and FIG. 5 is a side view of the drum.
In the second embodiment, the high-concentration detergent solution generation step and the washing step are performed in the same manner as in the first embodiment.

Similar to the first embodiment, a hollow baffle 18 and an auxiliary baffle 25 extending in the drum circumferential direction are provided on the inner wall of the drum 4. Here, however, the auxiliary baffle 25 is provided on the entire inner wall of the drum 4. Further, a long hole 27 is intermittently formed in the cylindrical surface of the drum 4 constituting the bottom surface of the auxiliary baffle 25 extending around the entire circumference of the drum.
Further, the inside of the auxiliary baffle 25 is partitioned in the drum circumferential direction by a partition plate 29, and the long hole 27 is also divided at the same position. Further, a plurality of small holes 20 and 26 are provided in the upper surface of the baffle 18 and the auxiliary baffle 25 and the upper portion of the inclined surface in the same manner as in the first embodiment.

By the baffle 18 and the auxiliary baffle 25 having such a configuration, a high-concentration detergent liquid can be injected from the elongated hole 27 and sprayed regardless of the rotation position of the baffle 18. However, since the long hole 27 is divided, there is a place where the hole is not opened even on the drum cylindrical surface provided with the long hole 27. It is difficult to enter the auxiliary baffle 25. Therefore, it is desirable to supply a high concentration detergent solution to the baffle 18 and the auxiliary baffle 25 while rotating the drum 4.
In addition, by rotating the drum 4, the high-concentration detergent solution can be applied to the entire clothing or the like in the drum, and can be permeated throughout. At this time, if the drum 4 is rotated too fast, clothing or the like sticks to the inner wall of the drum, and the high-concentration detergent solution reaches only the sticking surface. Therefore, the drum 4 is rotated at a rotation speed sufficiently slower than the speed at which clothing or the like sticks to the inner wall of the drum.

Thus, in the drum type washing machine using the drum 4 of this embodiment, the drum 4 is rotated at a rotational speed sufficiently slower than the speed at which clothing or the like sticks to the inner wall of the drum, and from the water inlet provided at the upper part of the water tank. A high-concentration detergent solution is supplied to the baffle 18 and the auxiliary baffle 25, and is spread and penetrated through the plurality of small holes 20 and 26 provided in the baffle 18 and the auxiliary baffle 25.

In the case of the present embodiment, unlike the first embodiment, it is not necessary to detect the position of the baffle 18 and control the position thereof. Therefore, the magnet 24 and the Hall element provided in the first embodiment are not necessary. 21 is not required.

As shown in the first and second embodiments, it is desirable that the high-concentration detergent solution is applied to the entire clothing or the like, but the high-concentration detergent solution generated by the detergent dissolution container 15 is sprayed into the water tank 3 as it is. However, since the detergent is efficiently dissolved, the cleaning time can be shortened. Therefore, as shown in the first and second embodiments, it is effective without applying the high-concentration detergent solution to the entire clothing, etc., so that the high-concentration detergent solution is sprayed into the water tank 3 as it is. May be.

Next, a third embodiment in which the present invention is applied to a top open drum type washing machine will be described with reference to FIG.
FIG. 6 is a longitudinal side view of a top-open drum-type washing machine. In this drum type washing machine, there is a laundry inlet from the front surface to the upper surface of the housing 1, and a door 51 is provided there, and clothes etc. are taken in and out by opening and closing the door 51.
A cylindrical water tank 3 is disposed inside the housing 1 with the central axis thereof being horizontal, and an inner lid 52 for taking in and out clothes and the like is disposed at the upper part of the cylindrical portion of the water tank 3. Is provided.

A cylindrical drum 4 having a large number of small holes is rotatably provided inside the water tank 3, and an inner lid for inserting and removing clothes 17 or the like in a part of the cylindrical portion of the drum 4. 53a and 53b are provided. A rotating shaft is provided at the center of both side surfaces of the drum 4, and the rotating shaft is penetratingly supported on both side surfaces of the water tank 3 in a watertight manner and in a rotatable state.
A motor (not shown) that rotationally drives the drum 4 is attached to either one of both side surfaces of the water tank 3, and the rotating shaft of the drum 4 is connected to the rotating shaft of this motor.

Further, in order to drain the liquid used for washing, a drain valve 30 and a drain hose 31 are provided below the water tank 3, and when draining, the drain valve 30 is opened to drain the used washing water to the drain hose 31. To the outside of the washing machine.
A heater 19 for warming the washing water is attached to the inner lower part of the water tank 3.

On the inner wall of the drum 4, baffles 18 for scooping clothes and the like 17 during washing and tapping are provided at three equal intervals. The baffle 18 is hollow and is formed long in parallel with the rotation axis direction of the drum 4, and its cross-sectional shape is substantially trapezoidal. A plurality of small holes 20 are formed in the upper surface of the baffle 18 and the upper portions of the side surfaces.

Further, a hollow auxiliary baffle 25 extending from the baffle 18 in the circumferential direction of the drum is provided on the inner wall of the drum 4. Here, as in the second embodiment, the auxiliary baffle 25 is provided over the entire circumference of the inner wall of the drum 4. However, in this embodiment, the auxiliary baffle 25 is divided and formed so that the inner lids 53a and 53b can be opened and closed.

The washing water supply means includes a faucet connection port 12 arranged at the upper part of the housing 1, a main water supply electromagnetic valve 13 b and an auxiliary water supply electromagnetic valve 13 a connected to a water injection port 14 arranged at the upper part of the water tank 3. The

In the operation of the drum type washing machine of the present embodiment configured as described above, it has a high-concentration detergent liquid generation step that first generates a high-concentration detergent liquid by dissolving the detergent with a small amount of water before the washing step, Furthermore, after that, a high-concentration detergent liquid permeation step is provided in which the high-concentration detergent liquid is applied to clothes and soaked.

First, in the high-concentration detergent liquid production step, a small amount of detergent-dissolved water (tap water) is supplied from the auxiliary water supply electromagnetic valve 13 a to the detergent-dissolve container 15 provided at the rear of the upper part in the housing 1. The powder synthetic detergent put in is dissolved in detergent-dissolved water while stirring with an electrically driven stirring blade, and an operation of generating a high-concentration detergent liquid is performed.

In the next high-concentration detergent liquid penetration step, as a means for supplying the high-concentration detergent liquid into the water tank 3, the detergent dissolution container 15 has an electromagnetic valve 16 connected to the water inlet 14, and the electromagnetic valve 16 and the main water supply valve 13b. Is opened to dilute to a concentration suitable for allowing the high-concentration detergent solution to penetrate into the laundry, and supplied to the water inlet 14.
Then, while rotating the drum 4 at a rotational speed sufficiently slower than the speed at which the clothing 17 sticks to the inner wall of the drum, a high-concentration detergent solution is supplied from the water inlet 14 provided in the upper part of the water tank 3, and the baffle 18 and the auxiliary baffle 25 are It is sprayed and penetrated through the entire clothing 17 or the like.

After the high-concentration detergent solution is sprayed on the clothes 17 in this way, the main water supply electromagnetic valve 13b is opened to supply water so that the specified amount of cleaning water is obtained, and the motor is operated to move the drum 4 in either the left or right direction. Rotate to normal and perform the washing process by normal tapping.
Here, the high-concentration detergent solution sprayed in the previous process makes it easy for the dirt attached to the clothes 17 to dissolve, and it is possible to remove the dirt sufficiently with a small mechanical force. Therefore, the cleaning time can be shortened. In addition, since the high-concentration detergent solution is distributed throughout the clothing 17 and the like, there is little unevenness in washing and the washing performance can be improved.

Further, a fourth embodiment of the present invention is shown in FIGS. FIG. 7 is a longitudinal side view of the top-open drum-type washing machine, and FIG. 8 is an enlarged cross-sectional view of a baffle portion in the drum of the drum-type washing machine shown in FIG.

The basic configuration of the drum type washing machine of the present embodiment is the same as that of the third embodiment, and here, different parts from the third embodiment will be described.
First, in the drum type washing machine of the present embodiment, the detergent dissolution container is not mounted in the housing 1. The container 60 provided in the upper part of the housing | casing 1 is a normal detergent case, and does not have the function to melt | dissolve a detergent. Further, the baffle 18 is provided on the inner wall of the drum 4, but no auxiliary baffle is provided.
In particular, in the drum type washing machine of the present embodiment, a movable type that opens outside the outer periphery of the drum 4 during washing and closes so as to stick to the outer periphery of the drum 4 during dehydration is provided inside the baffle 18 provided in the drum 4. It has a blade 65.

In the operation of the drum type washing machine of the present embodiment configured as described above, first, in the high concentration detergent solution generation step provided before the washing step, a detergent and a small amount of washing water are supplied into the water tank 3, and the drum 4 is rotated to produce a high concentration detergent solution.
Specifically, the faucet connection port 12 and the detergent case 60 are arranged at the upper rear of the housing 1, and these are connected by the main water supply electromagnetic valve 13. Furthermore, the detergent case 60 is connected to the water inlet 14 located at the rear of the water tank 3. Water supply is started by opening the main water supply electromagnetic valve 13, and cleaning water is supplied into the water tank 4 while washing away the detergent in the detergent case 60. The water inlet 14 is directed so that detergent and washing water flow into the gap between the water tank 3 and the drum 4. Accordingly, the detergent passes through the gap between the water tank 3 and the drum 4 together with the cleaning water and does not fall on the clothing 17 or the like, and accumulates in the lower part of the water tank 3 .

The amount of washing water in the high-concentration detergent liquid production step is preferably such that the lower part of the drum 4 is in contact with the water surface, for example, less than 2L. The drum 4 is rotated after the small amount of washing water is stored in the lower part of the water tank 3, so that the washing water is stirred and the detergent is dissolved.
If the drum 4 rotates slowly, the washing water is not stirred so much and the detergent is hardly dissolved. When the rotation of the drum 4 is accelerated, the washing water collected in the lower part of the water tank 3 is lifted following the surface of the drum 4. When the speed is further increased, the entire surface of the drum 4 rotates with the cleaning water attached. In this state, the relative speed between the washing water and the drum 4 becomes small, and the detergent becomes difficult to dissolve. Further, if the rotation is accelerated, the resonance frequency is reached, and vibration and noise increase. Therefore, it is desirable to rotate the drum 4 at a speed at which the cleaning water is sufficiently agitated at a resonance frequency or less, without the cleaning water being attached to the entire surface of the drum 4, and the speed is suitably about 60 to 100 r / min. .

In this case, if there is a convex portion on the outer periphery of the drum 4, the detergent can be dissolved more smoothly. Therefore, in this embodiment, a movable blade 65 having a convex portion on the outside of the drum 4 is provided inside the baffle 18.
The structure of the blade 65 will be described with reference to FIG. The blade 65 is rotatably supported by a pin 68 erected on a support plate 66 in the baffle 18, and a weight 62 is fixed to one end thereof. Further, the blade 65 receives a force so as to always open toward the outside of the drum 4 by a torsion coil spring 70 fitted to the pin 68. This force is sufficiently larger than the gravity of the weight 62. Therefore, when the drum 4 is stationary or rotating at a low speed, the blades 65 are opened to the outside of the drum 4 as shown in FIG. Yes. However, in this configuration, a stopper 69 fixed to the support plate 66 in the baffle 18 is provided so that the blade 65 does not open too much, and the weight 62 contacts the stopper 69 so that the blade 65 does not open more than a predetermined angle. I am doing so.

Further, when the drum 4 is rotated at a high speed as during dehydration, centrifugal force acts on the weight 62, and when the centrifugal force of the weight 62 overcomes the force of the torsion coil spring 68, FIG. As shown, the blade 65 is retracted and brought into contact with the outer peripheral surface of the drum 4. If the blades 65 are closed as described above, the vibration between the blades 65 and the water tank 3 is sufficiently large even when the vibration is increased during dehydration and the drum 4 is vibrated toward and away from the water tank 3. And can be safely dehydrated.

In the high-concentration detergent liquid production process in the drum-type laundry of the present embodiment including the drum 4 having the blades 65, the direction in which the force that the blades 65 receive from the water by the rotation of the drum 4 is small (counterclockwise in FIG. 7). Rotate the drum 4 to dissolve the detergent. If the drum 4 is rotated in the reverse direction (clockwise in FIG. 7), the blades 65 scoop up the detergent and the washing water, and the detergent enters the baffle 18 and becomes difficult to dissolve. Therefore, in the high-concentration detergent liquid production process of the present embodiment, the detergent is sent to the bottom of the water tank 3 together with a little less than 2 L of washing water, and a drum having blades 65 that are convex on the outer periphery of the drum 4 is 60 to 100 r / min. Rotate counterclockwise at speed.

In this case, in order to dissolve the detergent well, it is desirable to operate the heater 19 during the high-concentration detergent liquid production step to raise the temperature of the washing water. In order to reduce energy consumption, it is preferable to control the heater 19 to operate only during the high-concentration detergent liquid production process.

Next, the high concentration detergent liquid permeation process in the present embodiment will be described. Here, it is necessary to increase the amount of water in order for the high-concentration detergent solution to permeate the entire clothing. However, if the amount of water is increased too much, the detergent concentration decreases and the cleaning performance does not improve much.
Experiments have revealed that a high-concentration detergent solution diluted with a water amount of about 1.5 times the amount of clothes or the like has excellent cleaning performance. Therefore, the main water supply electromagnetic valve 13 is opened to supply water to the water tank 3 so that the amount of water (for example, 3 L) is about 1.5 times the amount of cloth (for example, 2 kg) of the clothing 17 or the like.

As the amount of water is increased, clothes at the bottom of the drum 4 are infiltrated with high-concentration detergent solution, but clothes at the top remain dry. Therefore, in order to infiltrate the entire clothes or the like with the high-concentration detergent liquid, the high-concentration detergent liquid is dropped by rotating the drum 4 provided with the blades 65 as described above.
At this time, the rotation direction of the drum 4 is opposite to that of the high-concentration detergent solution generation step, and the drum 4 is rotated in a direction (clockwise in FIG. 7) in which the blade 65 receives a large force from the water due to the rotation of the drum 4. When the drum 4 is rotated in this direction, the high-concentration detergent liquid accumulated in the lower part of the water tank 3 is scraped up by the blades 65, and the high-concentration detergent solution is fed into the baffle 18 from the gap between the blades 65 and the drum 4. . The baffle 18 has a substantially trapezoidal cross section, and a large number of small holes 20 are formed on the upper surface and the upper surface of the slope. Therefore, when the baffle 18 is located at the upper part of the drum 4, the highly concentrated detergent accumulated in the baffle 18. The liquid is sprayed into the drum 4 from the small holes 20 and falls on the upper surface of the clothing 17 or the like.

In order to put all the high-concentration detergent liquid stored in the baffle 18 onto the clothing 17 or the like, it is preferable that the baffle 18 stops at a position above the drum. Since the baffle 18 is provided at three positions on the drum 4 at equal intervals, once the drum is rotated approximately 120 °, it is temporarily stopped, and after all the high-concentration detergent liquid stored in the baffle 18 has fallen on the clothing 17 etc. In addition, the drum 4 is rotated by approximately 120 ° and stopped. In this case, the time required for spraying all of the high-concentration detergent solution stored in the baffle 18 is about 2 seconds. Therefore, the operation of stopping the drum 4 for about 2 seconds after rotating the drum 4 by about 120 ° is repeatedly performed.

Further, it is possible to spray the high-concentration detergent liquid on the clothes 17 by slowly rotating the drum without stopping. In this case, if the drum is rotated at a speed of 30 r / min or more, the high-concentration detergent solution is difficult to be sprayed, so the drum is rotated at 30 r / min or less.
Therefore, in the high-concentration detergent liquid permeation process of the present embodiment, the high-concentration detergent liquid is thinned by supplying water so that the amount of water is about 1.5 times the amount of cloth such as clothing, and the blade that opens to the outside of the drum 4 After rotating the drum 4 having 65 approximately 120 °, the operation of stopping for about 2 seconds is repeated, or the drum 4 is rotated at a low speed of 30 r / min or less, and the high-concentration detergent solution is sprayed on the clothing 17 or the like. And let it penetrate.

After such a process, the main water supply electromagnetic valve 13b is opened to supply water so as to have a specified amount of cleaning water, and the drum 4 is rotated in both the left and right directions, and a normal scrubbing washing process is performed. . Here, the dirt adhering to the clothes 17 and the like by the high-concentration detergent solution is easily dissolved, and the dirt can be removed with a small mechanical force. Therefore, the cleaning time can be shortened. In addition, since the high-concentration detergent solution is distributed throughout the clothing 17 and the like, there is little unevenness in washing and the washing performance can be improved.

As mentioned above, although the Example of this invention was described, this invention is not limited to these Examples, but is applied widely in the whole of a drum type washing machine, and is effective.

It is sectional drawing inside a drum type washing machine which shows the 1st Example of this invention. It is a side view of the drum in the 1st example of the present invention. It is a perspective view of the baffle in the 1st example of the present invention. It is sectional drawing of the drum which shows the 2nd Example of this invention. It is a side view of the drum in the 2nd Example of this invention. It is sectional drawing inside a drum type washing machine which shows the 3rd Example of this invention. It is sectional drawing inside a drum type washing machine which shows the 4th Example of this invention. It is sectional drawing of the baffle in the 4th Example of this invention, (A) is the state which the movable blade | wing provided in a baffle opened, (B) is the closed state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing, 3 ... Water tank, 4 ... Drum, 14 ... Water injection port (supply port), 15 ... Detergent dissolution container, 18 ... Baffle, 19 ... Heater, 20 ... Small hole, 25 ... Auxiliary baffle, 26 ... Small hole 27 ... Long hole, 65 ... Feather

Claims (4)

A water tank and a cylindrical drum rotatably arranged in the water tank so as to have a gap between the water tank, clothes and the like are put in the drum, and the drum is rotated by a motor. In a drum type washing machine designed to wash clothes, etc.
Before the washing process, dissolve the detergent with a small amount of water to produce a high-concentration detergent liquid, and apply the high-concentration detergent liquid produced in the high-concentration detergent liquid production process to clothes, etc. A high-concentration detergent liquid permeation step for infiltrating, and a means for performing
In the high-concentration detergent liquid generation step, water is supplied to such an extent that the lower end of the drum is dipped, and the detergent is sent to the lower part of the water tank so that the drum is rotated at a speed of 60 to 100 r / min below the resonance speed. The drum-type washing machine has a step of dissolving the detergent by rotating the washing water accumulated in the lower part of the water tank so as to follow the surface of the drum. In the drum type washing machine according to claim 1,
A drum-type washing machine characterized in that a heater provided in the lower part of the water tub is driven only in the high-concentration detergent solution generation step. In the drum type washing machine according to claim 1,
One or more baffles that are hollow and have a substantially trapezoidal cross-sectional shape inside the drum, and are movable in the baffle so as to open to the outside of the drum when washing and to draw up washing water and to draw in when dewatering Drum-type washing machine, characterized in that it is provided with blades. In the drum type washing machine according to claim 3,
The baffle is provided at three locations at equal intervals, and in the high-concentration detergent solution penetration step, the amount of water about 1.5 times the amount of clothes and the like is supplied into the water tank to dilute the high-concentration detergent solution, After rotating the drum having the blades by approximately 120 °, the rotation is stopped or slowed down, and the operation of spraying the high-concentration detergent liquid on clothes or the like is repeatedly performed so that the high-concentration detergent liquid penetrates. A drum-type washing machine characterized by that.

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