JP2680658B2 - Drum type laundry processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an apparatus for drying or dehydrating or drying after washing general household laundry, hotel linen, hospital standard bedding, uniform, etc. The present invention relates to a drum type laundry processing device that can be used.

(Prior art) In the laundry industry, used dirty towels, sheets, wrapping cloths, uniforms, and other cloth pieces (hereinafter simply referred to as laundry) received from hotels, hospitals, etc. are processed into clean cloth pieces. Regenerated and shipped to hotels, hospitals, etc. The treatment process is divided into washing, dehydration, drying and finishing,
For items that require complete drying, such as towels,
Steps, sheets, wrapping cloths, uniforms, etc. that require ironing are the steps of ~ (however, the step is short).

However, in a conventional machine, it is common to first perform washing and dehydration, and then move the laundry to another dryer to finish the drying process. Further, in a machine for continuously performing washing and dehydration, the outer circumference of the rotary drum is a perforated plate, and the laundry is lifted to the inner wall surface of the rotary drum. A plurality of so-called beaters are attached, and the laundry is generally lifted up by the beaters as the drum rotates, and is washed by the impact at the time of falling and detergent, chemical force such as temperature, etc. . When the washing process is completed, the rotary drum is rotated at a high speed, and the water attached to the laundry is shaken off by the centrifugal force to be dehydrated.

When the dehydration process is completed, the worker stops the washing and dehydrating machines, places the laundry on a dolly or the like, and conveys it to the next dryer. After the laundry that has been washed and dehydrated is put into the drum of the rotary drum type dryer, the dryer dries the laundry by blowing hot air into the drum. Some laundry items require complete drying, such as towels, and some items such as sheets, wrapping cloths, and uniforms, move to the next ironing process after being semi-dried. The drying time varies depending on the type of laundry. , The drying time is selected according to them.

The above is a general treatment of conventional laundry in which washing, dehydration and drying are performed by separate machines. As a special example, the three treatment steps of washing, dehydration and drying are performed by one machine. So-called washing, dehydration, and dryers that are continuously operated at are commercially available. This type of machine can
Since the drying is performed continuously, it is not necessary for the worker to carry the laundry on the way unlike the above-mentioned separation type, but the following restrictions are created from the device side, and it is widely used as a product. The current situation is that there are none.

(1) When washing, spin-drying and drying are performed continuously, the process time is much longer than the total value of the conventional washing and spin-dryer process time and the dryer process time, resulting in a decrease in productivity. To do. That is, in an apparatus for continuous dewatering at high speed, the open area ratio of the rotary drum is limited to 20 to 30% in terms of strength. On the other hand, the porosity of the ordinary dryer is about 60%, which is because the ventilation efficiency of the device is lower and the drying time is longer than that of the conventional dryer.

(2) After washing and drying, depending on the type of laundry, such as towels and sheets, the laundry after dehydration clings to the inner circumference of the rotating drum and is difficult to separate from the rotating drum even during the drying process, so it is uniform. However, it was necessary to stop the machine on the way and manually remove the laundry from the inner circumference of the drum.

(3) Generally, the work of taking out the laundry after the washing process from the rotary drum is a heavy labor, and thus requires the power of a young male worker. Therefore, the industry has long sought to make this work easier.

(Problems to be Solved by the Invention) In order to successively carry out the steps of washing, spin-drying and drying, the time required for each step is greatly shortened, and after spin-drying, the laundry does not rotate on a rotating drum. It is necessary to be easily peeled from the inner circumference. In particular, in order to shorten the dehydration process and the drying process, the conventional dehydrator has the following configuration, and it is difficult to shorten the process. That is, since the circumferential wall surface of the rotating drum intersects the direction in which the centrifugal force acts at a right angle (mountain angle 180 °), the laundry is not sufficiently drained near the circumferential wall surface, and the centrifugal force is essentially large. It had a fundamental defect that the dehydration performance estimated from the above was not sufficiently exhibited. In addition, as a matter of course, there is a problem that extra energy and time are spent to dry the laundry after dehydration.

Further, since hot air is conventionally taken in by a suction method, the hot air passing through the inside of the drum is so-called rectified hot air, and the average wind speed is 1 to 2 m / sec, and the maximum is less than 5 m / sec.
Therefore, in order to effectively bring the washing section into contact with the hot air inside the drum, the rotation speed range of the drum can be expressed by gravitational acceleration.
Limited to 0.7-0.8G, it is necessary to float in rectified hot air for as long as possible.

By the way, if it is around 1G or over 1G, the laundry is attached and fixed to the inner peripheral wall of the drum, and the drying is significantly hindered. In other words, the chance of the laundry mass under the drum floating in the hot air due to the rotation of the drum is the maximum at 0.7 to 0.8 G, and rather lower at the further rotation. Further, since the average velocity of the hot air is as small as 1 to 2 m / sec, the relative velocity with the laundry cannot be made large, and microscopically, the removal of water vapor evaporated from the laundry is delayed accordingly.

For the above reasons, the average drying time is usually 30 to 40 minutes in the conventional drying by the suction method, and it has been strongly desired to develop a drying device capable of significantly shortening the drying time.

Further, regarding the shortening of the washing process, it is possible to shorten the washing time by using the device that the present inventors have already proposed (Japanese Patent Application No. 63-227418). , Put the laundry in the dehydrator, after washing and dehydration processing,
Since I was manually removing the laundry from the drum, depending on the type of laundry, the centrifugal force generated when the laundry was dehydrated by the high-speed rotation of the drum during the spin-drying process clings firmly to the inside of the rotating drum. It is a work that requires a great deal of force to take out the laundry after washing and dehydration, and normally, it is a work that cannot be carried out in succession unless it is a young boy.

Also, when the laundry is taken out of the dryer, the laundry does not seem to cling to the inside of the drum, but in order to take out the laundry from the drum, the worker bends his / her back and puts his / her hand on the drum. It was also a dangerous and difficult task, as it was required to pull the laundry out of the drum by exposing it to the hot atmosphere of the drying drum in some cases.

The present invention, in the conventional machine, there is a restriction on the drum rotation speed range for suspending the laundry in the rectified hot air, and the average velocity of the hot air in the drum is as small as 1 to 2 m / s, which is relative to the laundry. It was developed for the purpose of fundamentally solving this problem by paying attention to the fact that the speed cannot be increased and the difficulty of taking out the laundry after washing and dehydration.

(Means for Solving the Problem) For this reason, the present invention provides a laundry that is rotatably provided in the outer case by a rotary shaft that is arranged in a substantially horizontal direction and that is provided from the front opening to the outer case. A perforated rotary drum that can be opened and closed by a loading / discharging door is composed of a mountain-shaped wall surface, and the angle of the mountain is 90 ° to 160 ° with respect to the direction of action of centrifugal force, and A nozzle for blowing hot air or air that is desired to be opened is arranged on the upper part, and the nozzle has a blowout port arranged along the shape of a mountain drum so that the laundry on the inner surface of the drum is blown off with hot air or air. Then, this is a means for solving the problems.

(Operation) Although the water content can be reduced by decreasing the angle of the mountain wall surface of the rotating drum, in this case, the laundry clings to the drum. Therefore, it has been found that there is a desirable angle in the case of a machine in which washing, dehydration and drying are performed in a continuous process. In the present invention, by setting the angle of the crests to 90 ° to 160 °, the water content of the laundry can be made uniform and the water content can be improved. Here, the door for loading and discharging the laundry is opened to load the laundry into the rotary drum, and the door is closed to rotate the rotary drum to wash the laundry. After the washing is completed, hot air is blown from a nozzle that opens toward the upper part of the rotary drum to act on the laundry, thereby preventing the laundry from sticking to the drum when the drum is rotated at a high speed and dehydrated. Then, by rotating the drum with the door open, the laundry is lifted by the beater and the centrifugal force and drops, but at the same time, by blowing air from the nozzle into the drum, it is lifted up in the drum. The laundry is easily discharged to the outside through the door portion which is easily opened by riding on the flow of the exhaust air from which the air is discharged to the outside by the force of the air.

(Embodiments) The present invention will be described below with reference to the embodiments in the drawings.
1 to 2 show an embodiment of the device of the present invention.

In the figure, reference numeral 1 denotes a cylindrical rotary drum which is rotatable while keeping the rotary shaft 3 substantially horizontal, and is fixed to a pulley 4, a driving V-belt 5 and a motor 7 which are fixed to the rotary shaft 3. It is driven by the transmission path of the driving pulley 6 that is present.
In addition, the wall surface 10 of the rotating drum 1 has a diameter of several mm for ventilation and water passage.
A large number of holes 19 are provided. The wall surface of the rotary drum 1 is formed in a mountain shape, and the mountain angle θ is formed at an angle of 90 ° to 160 ° with respect to the acting direction of the centrifugal force. 2
Is located outside the drum 1 by an outer body, and has a drum support 8 consisting of a bracket and bearings for giving the rotary shaft 3 of the drum fixed to one side, and a door for taking in and out laundry 12 at the other end. 9 is attached. The opening 42 (FIGS. 8 and 9) of the drum 1 is opened and closed by the door 9. The pulley 4 is for driving the drum 1, and is fixed to the rotating shaft 3. Reference numeral 5 is a power transmission belt for driving the drum 1, 6 is fixed to a motor 7 whose rotation speed is set by a continuously variable device 30, and the rotational force of the motor 7 is rotated by a belt 5 and a pulley 4 to rotate the drum. A pulley that transmits to the shaft 3.

The door 9 has towels, sheets, which are washed, dehydrated and dried.
It is used for loading and unloading laundry 12 such as shirts, and it is attached to the outer case 2 and the pin 13 (Fig. 9) serves as the center of rotation for opening and closing. 15 is a duct for the drum outer case as shown in Fig. 1. The blower 25 feeds heated air, which is fixed to the side surface of No. 2 and is heated by the heater 24, into the drum 1. Reference numeral 17 denotes a beater, which is formed by a plurality of mountain-shaped plates attached to the wall surface 10 of the drum 1 and has a function of lifting the laundry 12 upward by the rotation of the drum 1. The holes 19 allow washing water, detergent and the like to be taken in and out of the drum 1 and the outer case 2 in the washing process, and in the dehydration process, the water shaken off the laundry 12 as the drum 1 is rotated at a high speed. It is discharged into the outer case 2 through this hole 19. Further, in the drying step, the heated air supplied into the drum 1 supplies energy for drying the laundry 12 into the drum 1, and then this air is discharged from the hole 19 to the outer case 2 and further out of the machine. Is discharged to.

Reference numeral 21 is a water supply pipe for feeding water for washing into the drum 1, and 22 is a drum outer body 2 during the washing process or during the dehydration process.
It is a drain pipe that controls the presence or absence of drainage by opening and closing the damper 23 as well as draining water from. The damper 23 is opened when the water is drained from the outer case 2, and the washing water in the outer case 2 or the water shaken off by dehydration is discharged from the outer case 2 to the drain groove 32 outside the machine, and is not drained from the outer case 2. The damper 23 is closed. The heater 24 is a blower 25 when supplying heated air into the drum 1.
The air outside the machine is sucked by and heated by the heater 24 and sent into the drum 1. The heater 24 is generally of a type in which steam or heating oil and suction air are heat-exchanged. In the drying process, 26 is an exhaust port for the hot air supplied into the drum 1, and a lint filter 27 is arranged in the middle thereof,
The lint that comes out from a towel or the like is caught by the filter 27 and is not discharged to the outside. It should be noted that only the exhaust gas is discharged from the duct 28 to the outside.

Next, the operation of the embodiment shown in FIGS. 1 and 2 will be described. First, in the washing process, a fixed amount of water is supplied from the water supply pipe 21 into the drum 1 and the outer case 2. Since the hole 19 is formed on the outer peripheral surface of the drum 1, the water supplied into the drum 1 passes through the hole 19 and accumulates in the outer case 2, and the water level in the drum 1 gradually rises. . In this case, the water level is checked at a water level detection position (not shown), and when the water level reaches a certain level, water supply is stopped. After that, the door 9 is opened and the laundry is supplied into the drum 1. Next, the motor 7 is driven to rotate the drum 1 at a constant speed.
To rotate. Further, if the drum 1 is rotated in the forward and reverse directions repeatedly, it is effective in preventing the laundry from becoming entangled.

Next, the flow of water or the like will be described with reference to the embodiment shown in FIG. 10. First, the detergent and the auxiliary agent are supplied from the detergent supplying device 35 and the auxiliary agent supplying device 36 into the drum 1 to perform pre-washing. When the pre-wash is completed, the damper 23 is opened, the washing water used for the pre-wash is discharged through the drain pipe 22 to the drain through the damper 23, and after a certain period of time or when the pre-wash water is drained, a sensor not shown Detected and close the damper 23.

Similarly, the washing water is supplied to the drum 1 to a certain level, and the detergent and the auxiliary agents are supplied from the detergent and auxiliary agent supplying devices 35 and 36 into the drum 1. Here, the steam nozzle shown in Fig. 10
37 is operated to blow steam into the water of the outer case 2 to raise the temperature of the washing water to a certain temperature. The rotation of the drum 1 can change the number of rotations of the motor 7 by controlling the speed changing device 30. If you use a liquid ejector here,
The washing time can be greatly reduced. In this way, main washing is performed in warm water, and then the drum 1 is rotated at medium speed to shake off the washing water adhering to the laundry by centrifugal force. At this time, the damper 23 is naturally opened to drain the washing water from the drain pipe 22 to the outside of the machine.

After that, the damper 23 is closed, water is supplied again into the drum 1, and a rinsing process is performed. This rinsing step may be the same as the washing step. After the rinsing process by repeatedly supplying and draining the washing water is completed, the dehydration process starts.

In the dehydration process, the drum 1 is driven by the rotation of the speed varying device 30 so as to receive an acceleration of 1 to 1.5 G on the inner circumference of the drum. As a result, the laundry put in the drum 1 can be distributed almost uniformly on the inner peripheral surface of the drum 1. After this state, the drum 1 is rotated at a high speed, the water adhering to the laundry is discharged to the outside from the hole 19 of the drum 1 by the centrifugal force, and this water is passed from the outer case 2 to the drain pipe 22. It is discharged to the outside of the machine.

Here, the test results obtained by changing the angle angle θ of the drum 1 are as described in FIGS. 3 to 5. Fig. 1 (a)
At, the direction of action of centrifugal force is F, and the angle of angle is θ.

Further, the data obtained by measuring the residual water content of the cotton cloth layer by changing the angle of the angle θ are shown in FIGS. 3 and 5. These data are the values when the towel was dehydrated at 350 G for 4 minutes. Where G represents the rotational acceleration R: Drum radius (m) n: Drum rotation speed (rpm).

Here, as shown in FIG. 3, the cotton cloth layer, which had a water content of 80% when the peak angle θ was a conventional flat plate (180 °),
When the angle is 120 °, it is 65%, and 15% of the water can be expelled from the cotton cloth. If this angle is set to 60 °, the water content will be 60%. It is possible to improve by 20% compared to the past.

On the other hand, as shown in FIG. 5, in the case of the apparatus shown in FIG. 1, even the cotton cloth near the wall surface of the dehydrating drum is sufficiently dehydrated, and the water content after dehydration in the center direction of the rotating drum is also increased. It can be seen that there is no large variation in the distribution, and the dehydration effect is increasing as a whole.

That is, when tested on a conventional drum, the water content in the circumferential wall of the drum and the direction of the drum center are greatly uneven,
Moreover, the water content is high: 90% on the circumferential wall of the drum and 65% in the center direction of the drum. However, if the angle angle θ of the drum is set to 120 °, the water content will be 70% on the circumferential wall surface of the drum.
%, 63% in the central direction of the drum, the difference is small, and the overall value is small, that is, it is understood that the water is efficiently dehydrated.

Further, in FIG. 4, when the angle angle θ of the drum is changed,
Although the cotton cloth layer passing through the towel adheres to the wall surface of the drum, the force required for peeling off the cotton cloth layer is shown as an index.
That is, when the angle of the mountain is 180 ° (conventional drum), when peeling vertically to the direction of the centrifugal force acting on the drum (vertical pull)
Can be a force of about 10, but when peeling off with a force perpendicular to the direction of the centrifugal force (lateral pulling), there is a hole 19 through the wall for draining water in the drum. Since the cotton cloth layer is inside, it is difficult to remove it by horizontal pulling, but the cotton cloth layer can be peeled off with a force of about 70. However, if the chevron angle is set to a small value, for example 60 °, the peeling force will be 180 to 240, and the peeling force will be near the index of 200 or more, so the cotton cloth layer clings to the wall surface of the drum and peels off without applying external force. There is no state, and it becomes impractical.

Therefore, compared with the conventional drum, in order to improve the water content and prevent sticking to the drum,
It has been found that a drum crest angle θ of 90 ° to 160 °, preferably 120 ° to 150 °, is practical.

Further, in the case of the mountain type drum as shown in FIG. 1, the laundry is pushed out in the F direction by the centrifugal force in the dewatering process and tends to concentrate on the portion where the drum diameter is large, that is, the mountain top of the outer cylinder surface. Therefore, in the case of the mountain-shaped drum of the present invention, the vibration due to the unbalanced load in the drum of the laundry, which is usually a problem in the dehydration step, causes the unbalanced load at or near the center of gravity thereof. It was also found that the structure makes it ideal for suppressing vibration during the dehydration process.

Next, in the drying process, the air heated by the heater 24 is fed to the duct 15 and the air blowing nozzle 11 near the end of the dehydration process.
It is supplied into the drum 1 via the and is transferred to the drying process as it is. At this time, when the laundry 12 is stuck in the drum 1 as shown in FIG. 1 (b), even if the heated air is supplied into the drum 1, the laundry 12 is dried uniformly and in a short time. It is impossible to make them.

That is, in order to perform washing, dehydration and drying in one step,
It is important to remove the dehydrated laundry 12 from the wall surface 10 of the drum 1 without human intervention. The rotation number of the drum is less than 1G, preferably 0.7 to 0.8G. Further, a temperature or humidity sensor (not shown) is attached to the exhaust port 26, and when it is detected that the temperature or humidity has become constant, the drying process ends.

Next, the structure and operation of the apparatus for shortening the drying time will be described in detail with reference to the embodiment shown in FIG.

First, prior to this, a conventional drying process, which is a target technology of the present invention, particularly a flow of hot air will be described with reference to FIGS. 11 to 13. 11 to 13 are all explanatory views showing the flow of hot air around the rotary drum of a conventional dryer or washing, dehydration and dryer.

In FIG. 11, 51 is an air heater comprising a drum 52 and a steam jacket, 53 is a laundry, and 54 is an intake blower for sucking hot air 55 'and discharging it out of the system.

However, in the system shown in FIG. 11, the hot air 5 which has passed through the air heater 52 from the air intake 56 provided above the drum 51.
5'is sucked, flows along the outer peripheral wall of the drum, enters the drum 51 through the porous portion of the drum 51, contacts the laundry 53, and then passes through the intake blower 54 from the exhaust port 57 at the bottom of the drum 51. Is discharged outside the system.

Next, referring to FIG. 12, the apparatus of FIG. 12 has a configuration similar to that of FIG. 11, but as is apparent from the side cross section of FIG. 13, the hot air distribution box on the drum 51 is shown. The hot air 55 ′ is more positively attempted to flow uniformly from the front surface of the upper half of the drum 51 into the inside of the drum 51 by the 58, and the rectifying effect becomes more distinct than that of the device shown in FIG. 11.

As described above, conventionally, the suction method using the intake blower 54 has been mainstream, and the laundry 53 carried by the rotation of the drum 51 floats in the rectified hot air 55 'inside the drum to perform drying. It is a thing.

Next, an embodiment of the blowing method of the present invention will be described with reference to FIG. 6 in contrast to the conventional suction method. In FIG. 6, the same parts as those in FIGS. 11 to 13 are designated by the same reference numerals. In FIG. 6, the main part is composed of a treatment tank 62 and a duct 15, and inside the treatment tank 62 is a rotary drum 1 made of a perforated plate which is rotatable through a bearing (not shown) provided in the treatment tank 62. It is stored. The rotating drum 1 is provided with necessary rotation by a motor and a control device (not shown). The treatment nozzle 62 has a blowing nozzle 11 as an inlet for the hot air 55.
And an exhaust port 26 as an outlet is provided, and the mounting angle of the former is the short hand of the clock, which opens at an angle corresponding to 9 o'clock to 12 o'clock, or 12 o'clock to 3 o'clock, toward the drum center,
The latter corresponds to the nozzle 11 and has two short hands of the clock respectively.
It is desirable to install at an angle of 6 o'clock or 6 o'clock to 10 o'clock. Further, in the duct 15, an air inlet 56, a blower blower 25, an air heater 24 heated by a steam jacket and the like, and a blow nozzle 11 opening to the treatment tank 62 are sequentially arranged along the air flow direction. The opening area of the blowing nozzle 11 is designed so that the hot air jet velocity is at least 5 m / sec or more.

The operation of the embodiment shown in FIG. 6 will be described. The laundry 12 put in the drum 1 (not shown) is moved in the direction of arrow 60 by the motor and controller (not shown).
By rotating between 8 and 1.2 G, the drum is lifted in the drum 1 and moves along the inner peripheral wall of the drum 1. Further, the air sucked by the blower blower 25 is heated to 110 ° C. to 140 ° C. by the air heater 24 and further becomes jet hot air 55 of 5 m / sec or more by the blow nozzle 11 to pass through the perforated plate of the drum 1 to be washed. Sprayed directly on 12.

The hot air 55 blows the laundry 12 near the inner peripheral wall (perforated plate) of the drum 1 toward the center of the drum 1. The hot air 55 blown to the laundry 12 passes through the layer of the laundry 12 attached to the inner peripheral wall of the drum 1 by the rotation of the drum 1 and is discharged from the exhaust port 26. The above steps are continuously performed by the rotation of the drum 1, and the laundry 12 is dried.

FIG. 7 is a comparison of the conventional rectifying hot air drying by suction and the blown jet hot air drying by the present invention with the same air volume. It can be seen from the figure that the present invention can shorten the drying time to 1/2 to 2/3 as compared with the conventional case. From an engineering point of view, R = KG, where R is the drying rate and G is the weight velocity of hot air.
^{There is} a relationship of ^{0.7 to 0.8} , and ^increasing the relative speed between the hot air and the laundry, that is, G, increases the drying speed R. In addition, a report example (basic fiber engineering [V]) that a drying speed of 10 times can be obtained by using parallel flow hot air as jet hot air in the dry state of the laundry 12 is introduced. Is extremely effective in speeding up the drying of laundry.

Next, with respect to the number of rotations of the drum 1, 0.7 to 0.8G is appropriate in the conventional method as described above, but the number of rotations of the drum 1 directly affects the frequency of stirring or replacing the laundry 12 in the drum 1. Therefore, the larger the value, the more advantageous it is, but in the conventional method, the upper limit is 0.7 to 0.8G. This is because if the load is 0.8 G or more, the laundry 12 gathers near the inner peripheral wall of the drum 1, and even if the laundry 12 is located at the top of the drum 1, it is difficult for the laundry 12 to fall due to gravity. Will be reduced to. However, according to the present invention, since the laundry 12 adhering to the inner peripheral wall of the drum 1 can be forcibly blown to the center of the drum 1 by the jet flow from the blowing nozzle 11, the rotation speed of the drum 1 can be reduced. There is no need to limit it as in the past, and even if the rotation speed exceeds 1 G, the effect of stirring the laundry due to the increase in the drum rotation speed can be sufficiently expected.

As described above, by combining the blower blower 25 and the blower nozzle 11 to generate hot air 55, it is possible to greatly reduce the drying time and save energy (nearly proportional to the time), which has never been expected in the past. . Furthermore, even if the amount of laundry exceeds the rated load amount (JIMS) determined by the drum size by 10 to 20%, it is possible to dry uniformly in a short time.

In addition, the position of the exhaust port 26 is determined by the blow nozzle 11 as described above.
Must be considered in relation to the placement position of This is to ensure that the hot air 55 that has once been blown into the laundry 12 as a jet flows through the other laundry layers before being discharged. Both the drying speed and efficiency decrease. In this case, the drum rotation direction is also an important factor.

For example, as shown in the embodiment of FIG. 6, when the jet is blown at the angle of the short hand at 10 o'clock, the optimum exhaust port mounting angle is the angle of the short hand at 3 o'clock to 5 o'clock, In this case, the rotation direction of the drum 1 is limited to the counterclockwise direction, and in the clockwise rotation direction of the drum 1, the optimum exhaust port 26
The angle of the short hand from 5 o'clock to 6 o'clock is the optimum attachment angle.
This means that even when a jet is blown from the angle of the short hand at 2 o'clock, it can be read by reversing the above description due to the symmetrical relationship. In addition, even if the jet angle of the jet is swung within the range of the angle of the short hand from 9 o'clock to 12 o'clock,
Although the drying performance equivalent to the short needle angle at the time can be obtained, if it exceeds this range, it becomes difficult to effectively disperse the laundry 12 in the space inside the drum 1, and the drying performance is lowered. If dry heating air is blown from the axial direction and the outer cylinder direction of the rotary drum 1 and the blowing direction is alternately switched at regular intervals, the laundry in the drum is heated and dried even more quickly. You can do it.

Next, the laundry 12 according to the embodiment of the present invention shown in FIG.
The facilitation of taking-out will be described with reference to FIGS. 8 and 9. The laundry 12 supplied into the rotary drum 1 is washed and dehydrated. At this time, the door 9 is of course closed, so that the water inside the drum 1 does not leak outside. The damper 40 is closed as shown in FIG. 9 to prevent water from splashing outside during washing and dehydration. Washing,
After the dehydration treatment, first, the damper 4 is moved by an air cylinder or the like (not shown) as shown by the broken line in FIG. 9 to be opened. Thereafter, when the blower 25 is operated and the drum 1 is rotated, the laundry 12 is easily separated from the drum 1.

Then, a heater (not shown) provided in the duct 15 is operated to perform a drying process. Next, after this drying process, the door 9 is opened and the damper 40 is closed (state shown by the solid line in FIG. 9).
17 and the laundry lifted by the centrifugal force of the drum 1
12 is easily discharged from the drum 1 to the outside. A wagon 41 shown in FIG. 8 stands by outside, and laundry 12
Automatically enters. The above explanation is for washing, dehydration,
Although the dryer has been described, it can be applied to a washing machine, a dehydrator, or a dryer. In the washing and dehydrating machine, after the peeling process, the drying process is not performed and the door is opened (the damper 40 is closed) to discharge the laundry.

(Effect of the invention) When the angle of the rotary drum is 180 °, a force of about 10 is required to peel it vertically to the direction of the centrifugal force acting on the drum, but a force perpendicular to the direction of the centrifugal force. At the time of peeling, since the laundry has entered the perforations of the rotating drum, it cannot be peeled off unless the force is about 70. Also, the water content can be reduced by decreasing the angle of the rotary drum, but in this case, the laundry sticks to the wall of the drum, and the force cannot be removed unless external force is applied. .

In the present invention, since the angle of the crest is opened in the range of 90 ° to 160 °, the water content can be improved. In the case of a mountain type drum, the laundry is pushed toward the top of the mountain type wall surface of the drum due to centrifugal force in the dehydration process and tends to concentrate on the top, so that the laundry is placed at or near the center of gravity of the mountain type drum. An unbalanced load is generated, and vibration due to the unbalanced load during the dehydration process can be suppressed to be small. Therefore, according to the present invention, since the distribution of the water content in the drum can be brought close to uniform, the drying time can be shortened,
The effect of preventing overdrying can be enhanced.

Further, according to the present invention, the nozzle for blowing hot air or air which is opened to face the upper part of the rotating drum is arranged, so that it is effective in preventing the laundry from sticking to the inner surface of the drum. That is, in the conventional case, since a large force is required to take out the laundry from the rotary drum, it is necessary to arrange a young male worker, but in the present invention, hot air or a hot air is discharged from the nozzle above the rotary drum. Since the clinging can be released simply by performing an air blowing operation, a female worker can easily take out the laundry. That is, the time required for taking out the laundry can be shortened to 1/4 or less of the conventional time. For example, it took 3 minutes or more to take out 50 kg of towel, but according to the present invention,
It can be done within 0.5 minutes. Furthermore, according to the present invention, since it is not necessary to pull out the laundry from the rotating drum as in the conventional case, the problem of damage to the laundry can be completely solved.

When the above effects are combined, the present invention has an effect that the time required for continuous steps of washing, dehydration and drying can be significantly shortened as compared with the conventional case.

[Brief description of the drawings]

FIG. 1 (a) is a side sectional view of a drum type laundry processing apparatus showing an embodiment of the present invention, and FIG. 1 (b) is an explanation showing a state in which laundry is pushed out and concentrated on the top of a mountain-shaped drum. Fig. 2 is a front view of Fig. 1 (a), Fig. 3 is a diagram showing the relationship between the angle of the drum crest and the water content, and Fig. 4 is a relationship between the angle of the drum crest and the peeling force. Fig. 5 is a diagram showing the water content distribution of the cotton cloth after centrifugal dehydration in the drum position according to the present invention and the conventional one, and Fig. 6 is the drum center of the laundry during the drying process by the blowing method of the present invention. And FIG. 7 is a diagram showing the relationship between the drying time and the water content of linen in the present invention and the prior art, and FIG. 8 is an explanatory view of the action of the embodiment apparatus of FIG. Figure 9 is the same front view,
FIG. 10 is a piping diagram in the apparatus of FIG. 1, FIGS. 11 and 12 are front sectional views of a conventionally proposed laundry processing apparatus by a suction method, and FIG. 13 is a sectional view taken along line AA of FIG. It is a figure. Description of main parts of the figure 1 ... Rotating drum, 2 ... External body 3 ... Rotating shaft, 4 ... Pulley 5 ... Belt, 7 ... Motor 8 ... Drum support, 9 ... Door 10 ... Wall surface , 11 …… Air injection nozzle 12 …… Laundry, 13 …… Pin 15 …… Duct, 19 …… Hole 21 …… Water supply pipe, 22 …… Drain pipe 25 …… Blower, 26 …… Exhaust port

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Ueda No. 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Nagoya Machinery Works (72) Inventor Yasushi Tsubaki Nakamura-ku, Aichi Prefecture, Nagoya-shi No. 1 Takamichi, Iwatsuka-cho, Nagoya Research Laboratory, Mitsubishi Heavy Industries, Ltd. (56) Reference JP-A-1-32893 (JP, A) JP-A-55-78996 (JP, A) Jitsukaihei 2-59785 (JP , U)

Claims (1)

(57) [Claims] 1. A perforated structure which is rotatably provided in an outer case by a rotary shaft arranged substantially horizontally and whose front opening is opened and closed by a laundry loading / discharging door provided in the outer case. The rotary drum is composed of a mountain-shaped wall surface, and the angle of the mountain is 90 ° to 160 ° with respect to the acting direction of the centrifugal force, and hot air or air blown to the upper part of the rotating drum is desired. A drum-type laundry processing apparatus, characterized in that a nozzle for use is disposed, the nozzle has an outlet in the shape of a mountain-shaped drum, and the laundry on the inner surface of the drum is blown off with hot air or air. .