JP2009125519A - Cleaning-in-place method of washing/spin-drying machine and cleaning-in-place washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To completely, quickly and easily remove foreign objects attached to microscopic recesses by improving a cleaning-in-place technique of a washing/spin-drying machine. <P>SOLUTION: A laundry spin-drying machine is configured to put cleaning liquid in an outer drum 2 for storing a rotating inner drum 3. A liquid surface in a conventional art is a low-level liquid surface L or a high-level liquid surface H as shown in figure, which is set lower than a rotary shaft 5, however, the cleaning liquid surface is set higher than the rotary shaft 5 as indicated by W in figure. When the inner drum 3 is rotated with the cleaning liquid put to the level W, the cleaning liquid is violently agitated to cause a turbulent flow and collides on the inner surface of the outer drum 2. The foreign objects attached to the inner face of the outer drum are peeled by receiving the collision of the cleaning liquid to be removed completely. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method and apparatus for washing a dehydrator, in particular, a place where it can touch laundry.

There are two types of cleaning of mechanical devices: disassembly cleaning (COP) and stationary cleaning (CIP).
In-place cleaning (CIP: Cleaning In Place) is a system in which a cleaning liquid is circulated inside a machine without disassembling it.
This in-place cleaning (CIP) has the general advantage that it is highly efficient and easy to automate, it can be easily applied to large machinery and equipment, and the consumption of cleaning chemicals is small. There is a problem that it is difficult to clean. In particular, it is not easy to clean up to the bottom of the microscopic recess.

FIG. 4 is a schematic diagram showing a conventional laundry dehydrator.
In the outer cylinder 2, an inner cylinder 3 made of a perforated plate is disposed. The inner cylinder 3 is mounted on a rotating shaft 5 and supported by a bearing 6.
A driven pulley 7 is attached to the rotary shaft 5 and is driven to rotate by a drive motor 10 via a belt 8 and a drive pulley 9.
The outer cylinder 2, the bearing 6, and the drive motor 10 are mounted on a frame 11 and supported via a buffer member.
Reference numeral 1 denotes a case, which is provided with an opening for taking in and out laundry and a door 4 for covering the opening. For convenience of explanation, the side on which the door 4 is originally provided is called the front surface of the washing and dehydrating machine, and the opposite side is called the back surface.
In some cases, the inner body 3 is tilted in order to put in and out the laundry, but the basic posture is that the center line XX of the rotating shaft 5 is horizontal. In the present invention, the “substantially horizontal rotation axis” means that the basic posture is horizontal.

Various liquids are injected into the outer body 2 according to work. The above liquid is mainly water, but there are washing liquid formulated with detergent, almost pure water for rinsing, finishing liquid with glue added, etc.
Furthermore, there may be a case where a cleaning liquid to which a cleaning agent is added is added.
In this way, an appropriate amount of liquid is injected into the outer body 2 in accordance with various operations such as pre-washing, main washing, rinsing, finishing, and washing. Further, during the dehydrating operation, the inner cylinder is rotated without emptying the liquid without emptying the liquid (described in detail later with reference to FIG. 6B).

FIG. 5 is a system diagram schematically illustrating a mechanism for injecting the liquid into the outer trunk.
In general, the bottom surface of the outer body 2 is divided into 10 equal parts from the center line XX of the rotating shaft 5, with 1 to 3 being low, 5 being medium, and 7 being high, and these liquid level positions are For detection, a low liquid level sensor 15 is provided for the low liquid level L, a medium liquid level sensor 16 is provided for the medium liquid level M, and a high liquid level sensor 17 is provided for the high liquid level H.
Detection signals of the respective liquid level sensors are input to the automatic control device 20, and the automatic control device controls the liquid pump 13 to inject the liquid to a required liquid level position.
In general, an overflow pipe 19 is provided to restrict the liquid level from rising too much. The opening (overflow inlet) of the overflow pipe is set in the vicinity of the high liquid level H, and is at a position lower than the rotating shaft 5 at the highest.
The reason is that even if the liquid is poured to a high level exceeding the rotational axis, it merely increases the rotational resistance of the inner cylinder and is not suitable for washing or rinsing.

FIG. 6 is a schematic cross-sectional view for explaining the relationship between various operations and the liquid level.
(A) The figure depicts a laundry operation or a rinsing operation. The inner body 3 is rotated at a low speed of several tens of rpm, that is, at a rotational speed at which the centrifugal force acting on the laundry 22 does not reach 1G, as indicated by the appended arc arrow.
The laundry 22 is scraped up by the inner cylinder, but since the acting centrifugal force is less than 1 G, it falls in a parabola as indicated by the arrow F and is struck against the inner wall of the inner cylinder. The impact and stirring at this time exhibit a washing effect and an excessive effect.
Since washing (or rinsing) is performed by the above-described action, the washing liquid (or rinsing liquid) 12
It is necessary for the liquid level to immerse the lower part of the inner cylinder, and it is preferable that the liquid level does not reach the rotating shaft 5.

FIG. 6 (B) depicts the dehydration operation. The inner drum 3 is rotated at a high speed of several hundred rpm, that is, at a high speed as indicated by the appended arc arrow at a rotational speed at which the centrifugal force acting on the laundry 22 exceeds 1G.
The laundry is brought into close contact with the inner wall of the inner cylinder by centrifugal force and rotated together with the inner cylinder at a high speed.
Moisture contained in the laundry is spun off by centrifugal force, scattered as water droplets (not shown), and drained 24 along the inner wall of the outer body 2.
In this dewatering operation, naturally, liquid is not injected into the outer cylinder 2. It is impossible to accumulate the liquid to a level at which at least the inner cylinder 3 can be touched.

As discussed above, the relationship between the rotational speed of the inner cylinder and the liquid level position in the prior art is
I. The liquid level when the inner cylinder rotates at a low speed is below the rotation axis so as to immerse the lower part of the inner cylinder,
B. When the inner cylinder rotates at a high speed, no liquid is poured into the outer cylinder and it is empty (at least a liquid level that can touch the inner cylinder is not allowed).
It was impossible to deviate from the above principle.

The following documents are publicly known regarding cleaning techniques that can also be applied to a laundry dehydrator.
The invention described in Japanese Patent Laid-Open No. 2005-58740 cited as Patent Document 1 is sterilized by high-temperature steam,
The invention described in JP-A-6-277385 cited as Patent Document 2, and
The invention described in JP-T-2002-533140 cited as Patent Document 3 has a structure that is sterilized by ozone.
The invention described in JP-T-2002-527215 cited as Patent Document 4 has a structure in which an atomic oxygen generator is provided and sterilized by atomic oxygen.
JP 2005-58740 A JP-A-6-277385 Special Table 2002-533140 gazette Special table 2002-527215 gazette

The practical cleaning means that can be applied to the laundry dehydrator are roughly classified into chemical means using a chemical such as hypochlorous acid and physical (mechanical) means represented by a cleaning brush. .
For radiation sterilization, pollution prevention measures are not realistic and are incomplete.
In current hygiene, the combined use of chemical and physical (mechanical) means is most desirable.
The reason is that, even if complete sterilization is achieved with, for example, a bactericidal agent, if a small amount of organic waste remains, miscellaneous bacteria propagate again using this as a nutrient source.

All of the above known techniques belong to chemical sterilization, and no special effect can be expected with respect to the removal of organic waste.
From such a point of view, consideration is given to removing organic dirt by adding a surfactant to the disinfectant, but the removal of organic dirt is incomplete.
The reason is that even a metallic member having a gloss appearance has microscopic irregularities on the surface, and it is difficult to completely remove organic contaminants attached to the concave portions.

Another reason for the difficulty of complete cleaning and disinfection is that washed garments may come into contact with unwashed garments.
This problem is described next with reference to FIG.
In hospital hygiene management, it is necessary to distinguish between fouling zones and clean zones.
For example, the left side of the surface ZZ shown in the figure is a fouling zone where there is a high possibility that human waste or bacteria exist
Assume that the right side is a clean zone where human waste and germs are not allowed to exist.
After opening the door 4, putting the clothes into the inner body 3 as shown by the arrow A, washing and dehydrating, and then taking out the washed clothes from the door 4 again as shown by the arrow B, the clothes became very clean. Clothes will be contaminated.
In order to solve such a problem, the washed clothes must be carried out from the washing / dehydrating machine to the cleaning zone as indicated by an arrow C.

The issues related to hygiene management discussed above are summarized as follows.
α. Washing with a washing dehydrator must not only be sterilized using chemicals and high temperatures, but also mechanically (mechanically) remove organic dirt adhering to microscopic recesses.
β. Laundry that has been washed and dehydrated must be transported to the clean zone without passing through the contaminated zone.
(Note) If organic waste can be removed chemically, it is not always necessary to use a mechanical method. However, the chemical solution has a surface tension, and there is a problem of “wetting” between the chemical solution and the metal surface, so that the organic soil adhering to the microscopic recess is completely removed only by the chemical action of the chemical solution. It is very difficult to remove.
Whatever cleaning (disinfecting) solution is used, it is expected that the combined use of the mechanical filth removal means is extremely effective in order to exert the effect of the cleaning solution.

The present invention has been made in view of the circumstances described above. The first object of the present invention is to clean the inside of the outer body hydrodynamically and to completely remove foreign matter adhering to the microscopic recess. It is another object of the present invention to provide a stationary cleaning method and a stationary cleaning apparatus that can be removed.
A second object is to provide a stationary washing apparatus that can be carried out to a clean zone without fear of soiling the washed and dehydrated laundry.

In this [Means for Solving the Problems] column, drawing symbols are added in parentheses for easy comparison with the drawings, but these bracketed symbols limit the configuration of the present invention as shown in the drawings. Not what you want.
The stationary cleaning method according to the invention of claim 1
(See FIG. 1) A method of washing a washing and dehydrating machine comprising an inner cylinder (3) mounted on a substantially horizontal rotating shaft (5) and driven to rotate, and an outer cylinder (2) containing the inner cylinder. In
The outer body is at a level higher than the liquid level for washing and rinsing (H, M, L) set in the laundry dehydrator and to a liquid level (W) higher than the rotation shaft. With the cleaning liquid filled in,
By rotating the inner cylinder and stirring the cleaning liquid, generating turbulent flow in the cleaning liquid,
The inside of the outer body is washed to every corner.
As the cleaning liquid, hot water of 80 to 90 degrees can be used, which is desirable because a sterilization effect can be obtained.

The stationary cleaning method according to the invention of claim 2
(See FIG. 2) A method of washing a washing and dehydrating machine comprising an inner cylinder (3) mounted on a substantially horizontal rotating shaft (5) and driven to rotate, and an outer cylinder (2) containing the inner cylinder. In
In the state where the cleaning liquid (21) is put into the outer cylinder up to the liquid level (W ′) which contacts the inner cylinder,
A laundry or a similar water-absorbing object (dummy laundry 25) is placed in the inner cylinder, and the inner cylinder is rotated at a high speed with a centrifugal force of 1G or more.

The configuration of the stationary washing apparatus for the laundry dehydrator according to the invention of claim 3 is as follows:
(See FIG. 1) In a washing and dewatering machine comprising an inner cylinder (3) mounted on a substantially horizontal rotating shaft (5) and driven to rotate, and an outer cylinder (2) containing the inner cylinder,
The cleaning liquid level is set to a level (W) higher than the liquid level (H, M, L) set for the washing operation and / or the rinsing operation, and higher than the rotating shaft,
The inner drum can be rotated in a state where the cleaning liquid is filled up to the cleaning liquid level.
As the cleaning liquid, hot water of 80 to 90 degrees can be used, which is desirable because a sterilization effect can be obtained.

The configuration of the stationary washing apparatus for the washing and dehydrating machine according to the invention of claim 4 is in addition to the configuration requirements of the invention apparatus of claim 3,
(See FIG. 1) Liquid level sensors (15, 16, 17) for washing and / or rinsing work are provided in the outer body (2), and liquid for injecting liquid into the outer body A pump (13) is provided,
An automatic control device (20) for controlling the liquid pump by receiving a detection signal of the liquid level sensor is provided,
A cleaning liquid level sensor (18) is installed above the washing level and / or rinsing level sensors (15, 16, 17) and above the rotating shaft (5). And
The automatic control device (20) receives the output signal of the cleaning liquid level sensor (18), controls the liquid pump (13), and can inject liquid up to the position of the cleaning liquid level sensor. It is characterized by that.

The configuration of the stationary cleaning apparatus according to the invention of claim 5 is in addition to the configuration requirements of the invention apparatus of claim 4,
(Refer to FIG. 1) No overflow pipe is provided near the rotating shaft (5) or at a position lower than that.
Alternatively, the overflow pipe can be closed to suppress the overflow function.

The configuration of the stationary washing apparatus for the washing and dehydrating machine according to the invention of claim 6 is in addition to the configuration requirements of the invention apparatus according to any one of claims 3 to 5,
(See FIG. 3) The inner cylinder (3) is made of a perforated plate and has a cylindrical shape, and an inner cylinder door (3a) through which laundry can be taken in and out is provided on the side surface or the back surface. Features.

When the invention method of claim 1 is applied, the cleaning liquid is agitated by rotating the inner cylinder in a state where the cleaning liquid is filled to a high level that was not filled in the prior art in the outer cylinder. Generate turbulence.
Due to this turbulent flow, the cleaning liquid violently collides with the inner surface of the outer cylinder, and the foreign matter adhering to the microscopic recesses is peeled off to clean the inside of the outer cylinder to every corner.
The invention method according to claim 1 can be accomplished by performing the liquid level control according to the present invention using a rinse dehydrator having a basic structure, without providing a separate dedicated device.

When the method of the invention of claim 2 is applied, a laundry or a water-absorbing object similar to this is placed in the inner cylinder in a state where the cleaning liquid is put to a level that contacts the inner cylinder (reference symbol W ′ in FIG. 2). Since the inner cylinder is rotated at a high speed with a centrifugal force of 1 G or more, the water-absorbing object in the inner cylinder rotates in a circle together with the inner cylinder 3,
When it comes to the bottom of the circle, touch the cleaning solution to absorb it. When passing through the upper half of the circle, the contained cleaning liquid is shaken off by the centrifugal force and scattered, and violently collides with the inner surface of the outer body.
Due to this collision, the foreign matter adhering to the microscopic recesses on the inner surface of the outer body is peeled off and removed.
The invention method according to claim 2 does not require the provision of a separate dedicated device, but uses a basic structure rinsing dehydrator and an appropriate water-absorbing object (laundry or dummy laundry) to control the rotational speed according to the present invention. Can be accomplished by

When the invention apparatus of claim 3 is applied, the cleaning liquid is set to a high level, which was not considered in the prior art, and the inner cylinder is rotated to agitate the cleaning liquid to generate turbulent flow. Can be violently collided with the inner surface of the outer trunk.
The foreign matter adhering to the microscopic concave portion on the inner peripheral surface of the outer cylinder is peeled off by this collision, and the inside of the outer cylinder is cleaned to every corner.
Since the invention apparatus according to claim 3 can be configured by using a laundry dehydrator having a basic structure and adding the liquid level control mechanism according to the present invention, it is not necessary to provide a separate dedicated apparatus. The machine can be manufactured at low cost without increasing the size, weight, and complexity.

When the invention device of claim 4 is applied together with the invention device of claim 3,
In addition to the liquid level sensor for the washing operation and / or the rinsing operation that is inherently provided in the laundry dehydrator, by a simple configuration of providing a sensor for the cleaning liquid level,
Since a required program is given to an automatic control device originally provided in the washing and dehydrating machine, the liquid pump is controlled by the output signal of the cleaning liquid level sensor, and the liquid can be injected up to the position of the cleaning liquid level sensor. The inventive device can be configured at low cost.

In addition to the constituent features of the invention device of claim 4, the invention device of claim 5 is applied.
Since the overflow pipe that opens below the rotation axis is not provided, or the overflow pipe can be closed to suppress the overflow function, the liquid level control by the device of the present invention is disturbed by the overflow pipe. There is no fear, it functions reliably and exhibits a complete cleaning function.

In addition to the constituent features of the inventive device according to any one of claims 3 to 5, when the inventive device according to claim 6 is applied,
Since the inner cylinder door that allows the laundry to be taken in and out is provided on the side of the cylindrical inner cylinder made of perforated plate, there is no risk of recontamination of the laundry that has been washed and dehydrated for the following reasons. Can be carried out to
In the conventional laundry dehydrator, the vicinity of the laundry input opening, which is in contact with unwashed clothing, is inevitably contaminated. Obviously, it will be contaminated if removed. If the door is provided on the side surface of the inner trunk by applying the present claim 6 and the washed and dehydrated clothing is taken out from the inner trunk door, it can be carried out to the clean zone without fear of being recontaminated.

FIG. 1 is a control and piping system diagram schematically illustrating an embodiment of a stationary cleaning apparatus according to the present invention.
Compared with the conventional example shown in FIG. 5 above, different points are extracted and described as follows.
In order to detect the lower liquid level sensor 15 for detecting the lower liquid level L, the middle liquid level sensor 16 for detecting the middle liquid level M, and the higher liquid level H, which are conventionally provided. In addition to the high level sensor 17 of
The cleaning liquid level sensor 18 is provided at a position higher than that of the present invention and at a higher level than the rotary shaft 5 by applying the present invention.

The output signal of the cleaning liquid level sensor 18 is input to the automatic control device 20.
The automatic control device drives and controls the liquid pump 13 to keep the cleaning liquid level W in the outer cylinder 2 at a high level.
When carrying out the present invention, the cleaning liquid level W may be set on the ceiling surface of the outer cylinder 2 so that the inside of the outer cylinder 2 is filled with the cleaning liquid. In this case, the installation of the cleaning liquid level sensor 18 can be omitted.
The cleaning liquid in this example was prepared by mixing a detergent, an alkaline agent, and a chelating agent. In carrying out the present invention, a known cleaning solution can be arbitrarily selected and used.
As the cleaning liquid, hot water of 80 to 90 degrees can be used. Hot water is desirable because it is easy to obtain and clean and provides sterilization.

The overflow pipe 19 provided in the conventional example (FIG. 5) does not provide this. It was deleted with a positive intention, not a negative meaning of omission.
If it is desired to provide an overflow pipe for some reason, a valve means is provided on the overflow pipe so that the overflow function can be suppressed, and the cleaning liquid does not overflow during the cleaning operation.
However, it is desirable to provide means (not shown) for releasing air in the upper space of the inner cylinder when the cleaning liquid is injected into the inner cylinder 3.

If the cleaning liquid level in the outer cylinder 2 is raised as described above and the inner cylinder 3 is rotated, the cleaning liquid is agitated to generate turbulent flow.
I. The vicinity of the cleaning liquid surface W and the inner surface of the outer cylinder located below the surface are subjected to a violent turbulent flow of the cleaning liquid.
That is, the cleaning liquid collides locally.
The cleaning liquid that has collided is removed by removing the foreign matter adhering to the microscopic recesses on the inner surface of the outer cylinder. By removing the foreign matter, the inner surface of the outer body is completely cleaned.
B. The inner surface of the outer cylinder above the cleaning liquid surface W is repelled by the rotating inner cylinder 3.
That is, the cleaning liquid collides locally. The cleaning liquid that has collided is removed by removing the foreign matter adhering to the microscopic recesses on the inner surface of the outer cylinder. By removing the foreign matter, the inner surface of the outer body is completely cleaned.

With organic foreign matter attached to the microscopic recesses on the inner surface of the outer body, even if it is completely sterilized with a disinfectant,
Miscellaneous bacteria propagate again using the remaining organic contaminants as nutrients.
Considering such circumstances, the practical value of the foreign matter removal effect in this embodiment is very large.
In practicing the present invention, it is desirable to use a cleaning solution having chemical dissolving power and sterilizing power. However, since the present invention removes foreign matter hydrodynamically, any cleaning liquid can be used to achieve a cleaning effect.

FIG. 2 is a front cross-sectional view schematically illustrating a stationary cleaning method according to an embodiment different from that described above.
Next, the difference will be described in comparison with FIG.
In the prior art, as shown in FIG. 6A, an operation (corresponding to a washing operation or a rinsing operation) for putting the washing liquid (or rinsing liquid) 12 into the outer cylinder 2 and rotating the inner cylinder 3 at a low speed, or As shown in FIG. 6B, there was only an operation (corresponding to the dehydration work) to empty the outer cylinder 2 and rotate the inner cylinder 3 at a high speed.
On the other hand, in the method of the present invention (FIG. 2), the washing liquid 21 is put in the outer drum 2 and the laundry (or a similar water-absorbing object: dummy laundry) is put in the inner drum 3. (Named the object) 25 and rotate at a speed of several hundred rpm. High-speed rotation refers to a rotation speed that generates a centrifugal force of 1G or more.

As described above, putting the cleaning liquid into the outer cylinder 2 and rotating the inner cylinder 3 at a high speed is an operation that has not been considered in the prior art.
In addition, the above-mentioned “put the cleaning liquid into the outer cylinder 2” means that the cleaning liquid is added to such an extent that the lower part of the inner cylinder is immersed.
The dummy laundry 25 rotates in a circle and rotates together with the inner body 3, gets wet while passing under the cleaning liquid level W ′, absorbs the cleaning liquid, and rises from the cleaning liquid level W ′. The cleaning solution is shaken off.

A large number of cleaning droplets 23 are scattered as shown by broken-line arrows and violently collide with the inner peripheral surface of the outer body 2. The impinging cleaning droplets are completely removed by peeling off the foreign matter adhering to the microscopic recesses on the inner surface of the outer cylinder.
The inner surface of the outer body is cleaned by completely removing foreign matter.
The level of the cleaning liquid level W ′ in this embodiment is set to such an extent that the lower part of the rotation locus circle of the dummy laundry 25 intersects with the cleaning liquid level W ′.
When the dummy laundry 25 is rotated and comes downward, the cleaning liquid droplet 23 cannot be ejected when passing through the upper portion unless it gets under the cleaning liquid 21 and gets wet. “Wetting” is a prerequisite.
However, even if the cleaning liquid level W 'is higher than necessary, it only increases the rotational resistance of the inner cylinder 3.
It is desirable to set it lower than the rotating shaft 5.

In order for the dummy laundry 25 to rotate with the inner drum 3 and to disperse the contained cleaning droplets 23, the centrifugal force applied to the inner drum 3 (dummy laundry 25) may exceed 1G. It is a necessary condition.
Since the laundry dehydrator performs centrifugal dehydration work, it is inherently configured to be capable of rotating at a high speed exceeding 1 G. Therefore, in order to implement the inventive method of FIG. 2 using the conventional laundry dehydrator , Does not require major remodeling.
That is, it is only necessary to change the operation pattern setting of the inner cylinder rotation speed control mechanism and the liquid level control mechanism.
The fact that it is extremely easy to implement is one of the advantages of the inventive method (claim 2) of the embodiment shown in FIG.

FIG. 3 is a perspective view schematically showing the outer cylinder 2 and the inner cylinder 3 extracted from one embodiment of the apparatus of the present invention.
The inner cylinder 3 is formed of a perforated plate in a cylindrical shape, and an inner cylinder door 3a is provided on a side surface thereof. The reference numeral 3b indicates a hinge.
As in the conventional example (FIG. 4), the laundry is put into the inner trunk 3 as indicated by the arrow A, and after the washing / dehydrating operation is completed, the inner trunk door 3a is opened and the laundry dehydrated clothing is indicated by the arrow C. Like ', it can be carried out by a route (arrow C') different from the clothing input route (arrow A).
Alternatively, the inner trunk door 3a may be opened to put clothes (arrow C), and the washed and dehydrated clothes may be taken out as shown by arrow A '.
Although illustration is omitted, an inner body door is provided on the back surface (the right side surface hidden in the figure) of the inner body 3, clothes are put in from the back as shown by an arrow D, and the clothes after washing and dehydration are moved to the arrow D ′. You may take out to the side like.
As described above, in the present embodiment, the clean zone and the contamination zone can be strictly partitioned.
Such an effect, combined with the cleaning effect of the invention apparatus according to claim 3, can meet the demands of hospital equipment, semiconductor industry, and the like.

1 shows an embodiment of a stationary cleaning apparatus configured to carry out a stationary cleaning method according to the present invention, and is a diagram in which a control system and a piping system are added to a cross-sectional view schematically drawn. It corresponds to the terms 3, 4 and 5. BRIEF DESCRIPTION OF THE DRAWINGS It is shown in order to demonstrate the stationary washing | cleaning method which concerns on this invention, is typical sectional drawing of a washing-and-dehydrating machine, and respond | corresponds to Claim 2. It is the perspective view which extracted the outer cylinder and the inner cylinder in the stationary washing apparatus which concerns on this invention, and was drawn typically, Comprising: It corresponds to Claim 6. It is sectional drawing which showed the stationary cleaning apparatus of the prior art example, and was drawn typically. It is the schematic diagram which extracted and drawn the liquid level control system and piping system in the stationary cleaning apparatus of the said prior art example. It is shown in order to demonstrate the relationship between the rotational speed of the inner cylinder in the washing machine dehydrator of a prior art example, and the liquid level in an outer cylinder, Comprising: (A) is sectional drawing which depicted the washing or the rinse process, (B ) Is a cross-sectional view depicting the dehydration process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Case 2 ... Outer cylinder 3 ... Inner cylinder 3a ... Inner trunk door 3b ... Hinge 4 ... Door 5 ... Rotating shaft 6 ... Bearing 7 ... Driven pulley 8 ... Belt 9 ... Drive pulley 10 ... Drive motor 11 ... Frame 12 ... Washing Liquid (or rinse liquid)
DESCRIPTION OF SYMBOLS 13 ... Liquid pump 14 ... Solenoid valve 15 ... Low liquid level sensor 16 ... Middle liquid level sensor 17 ... High liquid level sensor 18 ... Cleaning liquid level sensor 19 ... Overflow pipe 20 ... Automatic controller 21 ... Cleaning liquid 22 ... Laundry 23 ... Washing droplets 24 ... Drainage 25 ... Dummy laundry (object having water absorption)
A: Arrow indicating laundry input B: Arrow indicating laundry discharge C: Arrow indicating laundry delivery F: Arrow indicating laundry fall H: High liquid level L: Low liquid level m: Pump drive Motor M ... Middle liquid level W ... Cleaning liquid level XX ... Centerline of rotating shaft

Claims (6)

In a method for stationary cleaning a washing and dewatering machine comprising an inner cylinder mounted on a substantially horizontal rotating shaft and driven to rotate, and an outer cylinder housing the inner cylinder,
In a state in which the outer body is filled with the cleaning liquid up to a level higher than the liquid level for washing and rinsing set in the laundry dehydrator and higher than the rotating shaft,
By rotating the inner cylinder and stirring the cleaning liquid, generating turbulent flow in the cleaning liquid,
A stationary washing method for a washing and dewatering machine, wherein the inside of the outer body is washed to every corner. In a method for stationary cleaning a washing and dewatering machine comprising an inner cylinder mounted on a substantially horizontal rotating shaft and driven to rotate, and an outer cylinder housing the inner cylinder,
In the state where the cleaning liquid is put into the outer cylinder up to a level in contact with the inner cylinder or higher.
A method for stationary washing of a laundry dehydrator, wherein a laundry or a water-absorbing object similar thereto is placed in the inner drum, and the inner drum is rotated at a high speed with a centrifugal force of 1 G or more. In a washing and dehydrating machine comprising an inner cylinder mounted on a substantially horizontal rotating shaft and driven to rotate, and an outer cylinder containing the inner cylinder,
The cleaning liquid level is set at a position higher than the liquid level set for the washing operation and / or the rinsing operation and higher than the rotating shaft,
A stationary cleaning apparatus for a laundry dehydrator, wherein the inner cylinder can be rotated in a state where the cleaning liquid is filled up to the cleaning liquid surface. In the outer cylinder, a liquid level sensor for washing work and / or rinsing work is provided, and a liquid pump for injecting liquid into the outer cylinder is provided,
An automatic control device for controlling the liquid pump by receiving a detection signal of the liquid level sensor is provided,
A sensor for cleaning liquid level is installed above the liquid level sensor for washing and / or rinsing operation and above the rotating shaft,
4. The automatic control device is configured to receive an output signal of a cleaning liquid level sensor and control the liquid pump to inject liquid up to the position of the cleaning liquid level sensor. The stationary washing device for the washing and dehydrating machine described in 1. There is no overflow pipe that opens in the vicinity of the rotating shaft or lower than that,
The stationary washing apparatus for a washing and dehydrating machine according to claim 4, wherein the overflow function can be suppressed by closing the overflow pipe.   6. The inner cylinder is made of a perforated plate and has a cylindrical shape, and an inner cylinder door through which laundry can be taken in and out is provided on a side surface or a rear surface thereof. A stationary washing apparatus for a laundry dehydrator as described in any of the above.

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