JPH02195986A - Drum type laundry processing device - Google Patents

Abstract

PURPOSE:To suppress the vibration at the time of dehydration small, unify the distribution of moisture content, shorten the drying time, and prevent over- drying by forming the ridge angle of a porous rotary drum in a specific angle against the action direction of the centrifugal force and arranging an air spraying nozzle at the upper section of the rotary drum. CONSTITUTION:A rotary drum 1 is driven through the transmission path of a pulley 4 fixed to a rotary shaft 3, a driving belt 5 and a driving pulley 6 fixed to a motor 7. Many holes 19 for vent and drain are provided on the wall face 10 of the rotary drum 1, the wall face of the rotary drum 1 is formed in a ridge shape, and the ridge angle is formed in the angle 90-160 deg. against the action direction of the centrifugal force. Since the ridge angle is set to 90-160 deg., the moisture content of laundry is unified, and the moisture content can be improved. In case of the ridge type drum, an unbalanced load occurs at or near the gravity center section, thus the vibration at the time of dehydration can be suppressed small. Hot air is sprayed through a nozzle 11 to laundry, and the sticking of laundry to the drum 1 is prevented when the drum 1 is rotated at a high speed for dehydration.

Description

Detailed Description of the Invention (Industrial Utilization! [7') The present invention is an apparatus for dehydrating or dehydrating and drying general household laundry, hotel linen, hospital standard bedding, uniforms, etc. after washing, This invention relates to a drum-type laundry processing device that can be used in cleaning machines and the like.

(Conventional technology) In the laundry industry, used dirty towels, sheets, wrappers, uniforms, and other pieces of cloth (hereinafter simply referred to as laundry) received from hotels, hospitals, etc. are processed to become clean pieces of cloth. They are recycled and shipped to hotels, hospitals, etc. The processing process is divided into ■washing, ■dehydration, ■drying, and ■finishing. Items that require complete drying, such as towels, undergo steps ■~■, and sheets, wraps, uniforms, and other items that require ironing. What is required is the steps from ■ to ■ (however, step ■ is a short time).

However, with conventional machines, it is common to first wash and dehydrate the laundry, and then transfer the laundry to another dryer to complete the drying process. In addition, machines that perform continuous washing and dehydration have a rotating drum with a perforated outer periphery, and multiple so-called beaters are attached to the inner wall of the rotating drum to lift the laundry. Generally, the laundry is lifted upward by a beater and washed by the impact of the fall and by chemical forces such as detergent and temperature. When the washing process is completed, this rotating drum is rotated at high speed, and the water adhering to the laundry is shaken off by centrifugal force, and the laundry is dehydrated.

When the dewatering process is completed, the operator stops the washing and dehydrating machine, transfers the laundry onto a trolley, etc., and transports it to the next dryer. After washed and dehydrated laundry is placed in the drum of a rotary drum type dryer, the dryer dries the laundry by blowing hot air into the drum. Some types of laundry require complete drying, such as towels, while others, such as sheets, wrappers, and uniforms, require semi-drying before proceeding to the next ironing process.Drying times vary depending on the type of laundry. , the drying time is selected accordingly.

The above describes the general conventional laundry processing in which washing, dehydration, and drying are performed in separate machines.
As a special example, there are also commercially available so-called washing, dehydrating, and drying machines that perform the three processing steps of washing, dehydrating, and drying in a single machine in succession. This type of a machine performs washing, dehydration, and drying continuously, so there is no need for the operator to carry the laundry along the way, unlike with the separate type mentioned above.However, from the equipment perspective, the following Due to restrictions, the product is currently not widely available.

(1) When washing, dehydrating, and drying are performed continuously, the process time is about 11 times longer than the total process time of conventional washing and dehydrating machines and the process time of dryers, reducing productivity. do. That is, in an apparatus for continuous dehydration at high speed, the porosity of the rotating drum is limited to 20 to 30% in terms of strength. On the other hand, a normal dryer has a porosity of about 60%, and compared to this, the ventilation efficiency of the device is lower and the drying time is longer.

(2) After washing and spin-drying, depending on the type of laundry, such as towels and sheets, the spin-dry laundry may stick to the inner circumference of the rotating drum, making it difficult to separate from the rotating drum even during the drying process, so that the laundry is uniform. It was difficult to properly dry the laundry, and in some cases it was necessary to stop the machine halfway and manually peel the laundry from the inner periphery of the drum.

(3) Wash in general? Removing the laundry from the rotating drum after U-processing was hard work, and required the strength of young male workers. Therefore, the industry has been demanding for some time that this work be made easier.

(Problems to be Solved by the Invention) In order to perform the washing, dehydration, and drying processes continuously, it is necessary to greatly shorten the time required for each process, and to transfer the laundry after dehydration to the rotating drum. It needs to be easily peeled off from the inner periphery.

In particular, in order to shorten the dehydration process and drying process, conventional dehydration apparatuses have the following configuration, so it has been difficult to shorten the steps. In other words, since the circumferential wall of the rotating drum and the direction in which the centrifugal force acts are perpendicular to each other (mountain angle 180'), laundry near the circumferential wall is not sufficiently drained, and the centrifugal force is originally large. The dewatering performance estimated from the above was not fully demonstrated, which was a defect in the construction. As a matter of course, there were also problems such as extra eggs and time being spent on drying the laundry after spin-drying.

Furthermore, since hot air is conventionally taken in by suction, the hot air passing through the drum becomes so-called rectified hot air, with an average wind speed of 1 to 2 m/sec, and at most less than 5 m/sec. Therefore, in order to effectively bring the laundry into contact with the hot air inside the drum, it is necessary to limit the rotational speed range of the drum to 0.7 to 0.8G in terms of gravitational acceleration, and to keep the laundry suspended in the rectified hot air for as long as possible. There is.

Incidentally, if the laundry is near IG or exceeds IG, the laundry will adhere to and be fixed to the inner peripheral wall of the drum, and drying will be significantly inhibited. In other words, the laundry mass at the bottom of the drum is heated by the rotation of the drum.
The chance of floating in i is maximum at 0.7 to 0.8 G, and it will actually decrease at higher rotations. Furthermore, since the average velocity of the hot air is as small as 1 to 2 m/sec, the relative velocity with respect to the laundry cannot be set high, and microscopically, the removal of water vapor evaporated from the laundry is delayed accordingly.

For the above reasons, the average drying time in conventional suction drying is usually 30 to 40 minutes, and there has been a strong desire to develop a drying device that can significantly shorten this time.

In addition, the inventors have already proposed a shortening of the washing process (
Although it is possible to shorten the washing time using the device disclosed in Japanese Patent Application No. 63-227418, conventionally, when processing laundry, the laundry is put into a washing and dehydrating machine, and after washing and dehydrating, Since the laundry had to be manually removed from the drum, depending on the type of laundry, the centrifugal force generated during the spin-drying process when the laundry spins at high speeds causes the laundry to stick firmly to the inside of the rotating drum. ,laundry,
(Washing after dehydration) Removing items is a task that requires a lot of force, and usually only young men can perform it continuously.

Furthermore, when taking out laundry from the dryer, the laundry does not stick to the inside of the drum, but in order to take out the laundry from inside the drum, the operator must bend down and place his/her hand on the drum. This was still a dangerous and difficult task, as it required the laundry to be removed from the drying drum by inserting the laundry into the drying drum and, in some cases, exposing the upper half of the body to the high temperature atmosphere of the drying drum.

The present invention is characterized by the fact that in conventional machines, there is a restriction on the drum rotation speed range for floating laundry in rectified hot air, and the average speed in the drum of hot air is small at 1 to 2 m/s, and the relative speed to the laundry is limited. It was developed with the aim of fundamentally solving these problems, such as the inability to achieve high speeds and the difficulty in removing laundry after washing and dehydration.

(Means for Solving the Problems) For this reason, the present invention provides a laundry article that is rotatably provided in an outer shell by a rotating shaft disposed in a substantially horizontal direction, and that a front opening is provided in the outer shell. A rotating drum with side holes that can be opened and closed by a loading/discharging door is composed of a chevron-shaped wall surface, and the chevron-shape angle forms an angle of 90° to 160° with respect to the direction of action of centrifugal force. This device is equipped with a nozzle for blowing hot air or air that opens toward the top of the drum, and is used as a means to solve the problem.

(Function) By reducing the angle of the chevron-shaped wall of the rotating drum, the water content can be reduced, but in this case the laundry will stick to the drum. It has been found that there is a desirable angle in the case of washing.In the present invention, by setting the angle of the chevron to 90° to 160°, the moisture content of the laundry can be made uniform and the moisture content can be improved. Open the dual discharge door and put the laundry into the rotating drum, close the door and rotate the rotating drum to wash the laundry.After washing is finished, hot air is blown through a nozzle that opens at the top of the rotating drum. This prevents the laundry from sticking to the drum when the drum is rotated at high speed for dehydration.Then, by rotating the drum with the door open, the laundry is exposed to the beater and centrifugal force. is lifted up and falls again,
At the same time, by blowing air into the drum from the nozzle, the laundry is lifted upward in the drum, and the door is easily opened by the force of this air, riding the flow of exhaust air that is discharged to the outside. is discharged to the outside.

(Embodiments) The present invention will be described below with reference to embodiments of the drawings. Figs. 1 and 2 show embodiments of the apparatus of the present invention.

In the figure, reference numeral 1 denotes a cylindrical rotary trolley, which is rotatable while keeping the rotating shaft 3 approximately horizontal, and is fixed to a pulley 4 fixed to the rotating shaft 3, a driving belt 5, and a motor 7. The drive pulley 6 is driven by the transmission path of the drive pulley 6.

Further, the wall surface IO of the rotating drum 1 is provided with a large number of holes 19 of several diameters for ventilation and water passage. The wall surface of the rotating drum 1 is formed in a chevron shape, and the chevron angle θ is formed at an angle of 90° to 160° with respect to the direction of action of centrifugal force. Reference numeral 2 denotes an outer body, which is located outside the drum 1. A drum support 8 consisting of a bracket and bearings that provide the rotation axis 3 of the drum is fixed to one side, and a drum support 8 for loading and unloading the laundry 12 is attached to the other side. A door 9 is attached.

The opening 42 (FIGS. 8 and 9) of the drum 1 is opened and closed by a door 9. The pulley 4 is for driving the drum 1 and is fixed to the rotating shaft 3. 5 is a power transmission belt for driving the drum 1; 6 is fixed to a motor 7 whose rotational speed is set by a continuously variable device 30; the rotational force of the motor 7 is transmitted through the belt 5 and pulley 4 to rotate the drum; This is a pulley that transmits power to the shaft 3.

The door 9 is used for loading and unloading laundry 12 such as towels, sheets, and shirts to be washed, dehydrated, and dried, and is attached to the outer body 2, with the bin 13 (Fig. 9) being the center of rotation for opening and closing. becomes. A duct 15 is fixed to the side surface of the drum outer body 2 as shown in FIG. 1, and blows heated air heated by a heater 24 into the drum 1 by a blower 25. 17
is a beater, which is formed by a plurality of chevron-shaped plates attached to the wall surface 10 of the drum 1', and is washed by the rotation of the drum 1'. It functions to lift the U object 12 upward. During the washing process, the holes 19 allow washing water, cleaning water, etc. to enter and exit the drum 1 and the outer shell 2, and during the dehydration process, as the drum 1 rotates at high speed, water shaken off from the laundry 12 flows through the holes 19. is discharged from this hole 19 into the outer shell 2. In addition, in the drying process, the heated air supplied into the drum 1 supplies energy into the drum 1 to dry the laundry 12, and then this air is discharged from the hole 19 to the outer shell 2,
Furthermore, it is ejected out of the aircraft.

21 is a water supply pipe that sends water for washing into the drum 1; 22
is a drain pipe that drains water from the drum outer body 2 during the washing process or during the dewatering process, and controls whether or not the water is drained by opening and closing the damper 23. The damper 23 is the outer body 2
The damper 23 is opened when water is being drained from the outer shell 2, and the washing water or water shaken off by dehydration in the outer shell 2 is discharged from the outer shell 2 to the drain groove 32 outside the machine, and the damper 23 is closed when no water is being drained from the outer shell 2. . When the heater 24 supplies heated air into the drum 1, the blower 25 sucks air from outside the machine, heats it with the heater 24, and sends it into the drum 1.

Note that the heater 24 is generally of a type that exchanges heat between steam or heated oil and intake air. 26 is an exhaust port for hot air supplied into the drum 1 during the drying process, and a lint filter 27 is installed in the middle of the exhaust port, and the lint coming out from towels etc. is filtered through the filter 27 and captured, and the lint is not released from the outside. It has a structure that does not emit emissions. Note that only the exhaust gas is discharged to the outside from the duct 28.

Next, the operation of the embodiments shown in FIGS. 1 and 2 will be explained. First, in the washing process, water is supplied from the water supply pipe 21 to the drum 1.
, a certain amount of water is supplied into the outer shell 2.

Since holes 19 are bored in the outer peripheral surface of the drum 1, the water supplied into the drum 1 passes through the holes 19 and accumulates in the outer shell 2, and the water level inside the drum 1 gradually rises. . In this case, check the water level at the water level detection position (not shown) and
Water supply will be stopped when the water level reaches a certain level. After that, the door 9 is opened and the laundry is fed into the drum 1. Next, the motor 7 is driven to rotate the drum 1 at a constant rotation. Furthermore, if the rotation of the drum 1 is repeated in forward and reverse directions, it is effective to prevent laundry from becoming tangled.

Next, to explain the flow of water and the like in the embodiment shown in FIG. 10, first, detergent and auxiliary agents are supplied into the drum 1 from the detergent supply device 35 and the auxiliary agent supply device 36 for pre-washing. When the pre-washing is completed, the damper 23 is opened and the washing water used for the pre-washing is discharged through the drain pipe 22 into the drain channel via the damper 23. After a certain period of time or when the pre-washing water has been drained, a sensor (not shown) is activated. Detects this and closes the damper 23.

Next, in the same way, wash water is supplied into drum 1 up to a certain water level,
Further, detergent and auxiliary agents are supplied into the drum 1 from detergent and auxiliary agent supply devices 35 and 36. Here, the steam nozzle 37 shown in FIG. 10 is activated to blow steam into the water in the outer shell 2,
Raise the water for washing to a certain temperature. Note that the rotation speed of the motor 7 can be varied by controlling the speed variable device 30 to rotate the drum 1 . If a liquid ejecting device is used here, the washing time can be reduced by a factor of 11. In this way, main washing is performed in hot water, and then the drum 1 is rotated at a medium speed to shake off the washing water adhering to the laundry by centrifugal force. At this time, naturally, the damper 23 is opened to drain the T1 water from the drain pipe 22 to the outside of the machine.

Thereafter, the damper 23 is closed, water is supplied into the drum 1 again, and a rinsing process is performed. This rinsing step may be performed in the same manner as the washing step. After the rinsing process, which involves repeatedly supplying and draining washing water, the next step is the dehydration process.

In the dewatering process, the drum 1 is controlled by the variable speed device 30 and is rotated so that the inner circumference of the drum receives an acceleration of 1 to 1.5 G. As a result, the laundry contained in the drum 1 can be distributed almost uniformly on the inner peripheral surface of the drum 1. After reaching this state, the drum 1 is rotated at high speed, and the water adhering to the laundry is discharged to the outside from the holes 19 of the re-drum 1 by centrifugal force, and this water is transferred to the outer drum 2.
The water is discharged from the machine through the drain pipe 22.

Here, the results of testing by changing the angle θ of the drum 1 are as described in FIGS. 3 to 5. In Figure 1 (al), the direction of action of centrifugal force is F, and the angle of the chevron is θ.

Further, data obtained by measuring the residual water rate of the cotton fabric layer while changing the angle θ of the mountain shape are shown in FIGS. 3 and 5. Note that these data are values obtained when the towel was dehydrated at 350G for 4 minutes. Here, G represents the rotational acceleration and can be calculated as follows: R Ni drum radius (m) n Ni drum rotation speed (rpm).

Here, as shown in Fig. 3, the chevron angle θ is changed from that of the conventional flat plate (
When the angle is set to 180°, the moisture content of the cotton fabric layer is 80%, but when the angle is set to 120°, the moisture content becomes 65%, and as much as 15% of water can be expelled from the cotton fabric.

Further, if this angle is set to 60°, the water content becomes 60%, which is an improvement of 20% over the conventional method.

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 of the dehydrating drum can be sufficiently dehydrated, and furthermore, the water content after dehydration in the direction of the center of the rotating drum is There is no major change in the distribution, and it can be seen that the dehydration effect is increasing overall.

In other words, when a conventional drum was tested, the moisture content was highly uneven between the circumferential wall surface of the drum and the direction toward the center of the drum.Moreover, the moisture content was high: 90% on the circumferential wall surface of the drum and 65% toward the center of the drum. It has become. However, when the angle θ of the drum is set to 120°, the water content is 70% on the circumferential wall of the drum and 63% toward the center of the drum, and the difference is small, and the overall value is small, that is, the efficiency is small. It can be seen that it is often dehydrated.

Furthermore, in FIG. 4, when the drum angle θ is changed, a cotton cloth layer such as a towel adheres to the drum wall surface, and the force required to remove this cotton cloth layer is shown as an index. In other words, when the chevron angle is 180 degrees (conventional drum), a force of about 10 is sufficient when peeling perpendicular to the direction of centrifugal force acting on the drum (for vertical use), but when peeling off perpendicular to the direction of centrifugal force acting on the drum, a force of about 10 is sufficient. When removing by force (horizontal pulling), since the drum has a hole 19 that passes through the wall surface for draining water, it is difficult to remove it by horizontal pulling because the cotton fabric layer is stuck inside this hole 19. The cotton fabric layer can be peeled off with a force of about 7G. However, if the chevron angle is set small, for example 60°, the peeling force will be 180 to 240, and the index 2
00 or more, the cotton fabric layer clings to the drum wall and cannot be peeled off unless external force is applied, making it impractical.

Therefore, in order to improve the water content and prevent sticking to the drum compared to conventional drums, the angle θ of the drum ridge should be set between 90' and 160°, preferably 1
It has been found that 20° to 150° is practical.

Furthermore, in the case of a mountain-shaped drum as shown in FIG. 1, the laundry is pushed out in the F direction by centrifugal force during the dewatering process, and tends to concentrate at the portion where the drum diameter is large, that is, at the top of the mountain on the outer cylindrical surface. Therefore, in the case of the chevron-shaped drum of the present invention, the unbalanced load occurs at or near the center of gravity of the drum of laundry, which is usually a problem in the dewatering process. It was also found that this structure is ideal for suppressing vibrations during the dehydration process.

Next, in the drying process, near the end of the dehydration process, the air heated by the heater 24 is passed through the duct 5 and the air blowing nozzle 1.
1 into the drum 1, and directly proceed to the drying process. At this time, if the laundry 12 is stuck inside the drum 1 as shown in FIG. It is impossible to do so.

That is, in order to perform washing, dehydration, and drying in one step, it is important to be able to peel off the dehydrated laundry 12 from the wall surface 10 of the drum 1 without any manual intervention. Note that the number of rotations of the drum is less than 10, preferably 0.7 to 0.8G. Further, a temperature or humidity sensor (not shown) is attached to the exhaust port 26, and when it detects that the temperature or humidity has reached a certain level, the drying process is completed.

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, the conventional drying process, which is the subject technology of the present invention, and in particular the flow of hot air, will be explained with reference to FIGS. 11 to 13. 11 to 13 are explanatory diagrams showing the flow of hot air around the rotating drum of a conventional dryer or washing, dehydrating, and drying machine.

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

However, in the method shown in FIG. 11, the hot air 55' that has passed through the air heater 52 is absorbed from the air intake port 56 provided above the drum 51, and is passed through the porous portion of the drum 51 while flowing along the outer peripheral wall of the drum. After entering the tram 51 and coming into contact with the laundry 53, the air is discharged from the exhaust port 57 at the top of the drum 51 to the outside of the system via the air intake blower 54.

Next, referring to FIG. 12, the configuration of the device shown in FIG. 12 is almost the same as that shown in FIG.
As is clear from the side cross section of FIG. 3, the hot air distribution box 58 on the drum 51 is intended to more actively and uniformly flow the hot air 55' from the front surface of the upper half of the drum 51 into the inside of the drum 51. In this case, the rectifying effect appears more clearly than in the device shown in FIG.

As described above, conventionally, the suction method using the intake blower 54 has been the mainstream, and the laundry 53 lifted by the rotation of the drum 51 floats in the rectified hot air 55' in the drum, thereby drying. It is something to do.

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 in FIGS. 11 to 13 are indicated by the same reference numerals. In FIG. 6, the main part consists of a processing tank 62 and a duct 15.
A rotary drum 1 made of a perforated plate that is rotatable via a bearing (not shown) provided in the rotary drum 1 is housed therein. The rotating drum l is given the necessary rotation by a motor and a control device (not shown). The treatment tank 62 is provided with a blowing nozzle 11 as an inlet for the hot air 55 and an exhaust port 26 as an outlet. The latter opens toward the center of the drum at an angle corresponding to 3 o'clock, and the latter corresponds to the nozzle 11 from 2 o'clock to 6 o'clock or from 6 o'clock to 10 o'clock, respectively.
It is preferable to mount it at an angle of 1. Also duct 1
5, an air intake port 56, a blow blower 25, an air heater 24 heated by a steam jacket, etc., and a blow nozzle 11 that opens into a processing tank 62 are arranged in order along the direction of air flow.

The opening area of the blowing nozzle 11 is designed so that the hot air jet velocity is at least 5 m/sec.

Next, to explain the operation of the embodiment shown in FIG. 6, the laundry 12 put into the drum 1 from a door (not shown) is moved by the tram 1 to the arrow 60 by a motor and control device (not shown).
By rotating between 0.8 and 1.2G in the direction of
It is lifted within the drum 1 and moves along the inner peripheral wall of the drum 1.

The air sucked by the blower 25 is heated to 110°C to 140°C by the air heater 24, and is further turned into jet hot air 55 of 5 m/sec or more by the blowing nozzle 11, which passes through the perforated plate of the drum 1 to the laundry. 12 directly.

The hot air jet 55 blows away the wood 12 near the inner circumferential wall (perforated plate) of the drum 1 toward the center of the drum 1 . The hot air 55 blown onto the laundry 12 penetrates the layer of the laundry 12 attached to the inner peripheral wall of the drum 1 as the drum 1 rotates, and is discharged from the exhaust port 26. Each of the above steps is performed continuously by the rotation of the drum 1,
Drying of the laundry 12 progresses.

FIG. 7 compares the conventional suction type rectified hot air drying and the blowing type jet hot air drying according to the present invention at the same air volume. From the same figure, it can be seen that according to the present invention, the drying time can be shortened by 2% compared to the conventional method. In terms of engineering, this means that if the drying rate is R1 and the hot air weight rate is G, then R=KG'
- There is a relationship of 7 to 0.1, and increasing the relative speed between the hot air and the laundry, that is, G, increases the drying speed R. In addition, for flat drying of laundry 12, there is a report (Basic Textile Engineering [V)] that shows that the drying speed can be increased by 10 times by changing parallel flow hot air to jet hot air. It can be seen that this method is extremely effective in speeding up the drying of laundry.

Next, regarding the rotation speed of the drum 1, in the conventional method, <047 to 0.8G is considered appropriate as described above, but the rotation speed of the drum 1 depends on the frequency of stirring or replacing the laundry 12 in the drum 1. Since it has a direct effect, the larger the force, 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 0.8G or more, the laundry 12 will gather 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 will be difficult to fall due to gravity, and the agitation effect of the laundry 12 will be reduced. On the contrary, it will decrease. However, in the present invention, since the jet from the blowing nozzle 11 can have the effect of forcibly blowing off the cleaning material 12 adhering to the inner circumferential wall of the drum 1 to the center of the drum 1, the rotation of the drum 1 There is no need to limit the number of drums as in the past, and even if the rotation exceeds IG, a sufficient effect of stirring the laundry can be expected by increasing the drum rotation speed.

As described above, by converting the hot air 55 into a jet stream by combining the blower 25 and the blowing nozzle 11, it is possible to significantly shorten the drying time and save energy by shortening the drying time (approximately proportional to the time), which could not be expected in the past. becomes. Furthermore, the rated load amount (JIMS) determined from the drum size is 1 to 2.
Even if the amount of laundry exceeds that amount, it is possible to dry it uniformly in a short time.

Furthermore, the location of the exhaust port 26 needs to be considered in relation to the location of the blow nozzle 11 as described above. This is the hot air 5 that is blown in the form of a jet onto the laundry 12.
5 is designed to ensure that the laundry layer is discharged while moving past other laundry layers, and at angles other than those mentioned above, both the drying speed and efficiency will decrease due to the short path of the hot air. In this case, the drum rotation direction is also an important factor.

For example, as shown in the example of FIG. 6, when the jet is blown at the angle of the hour hand at 10 o'clock on a clock, the optimum installation angle of the exhaust port is the angle of the hour hand from 3 o'clock to 5 o'clock. In this case, the rotation direction of the drum 1 is limited to counterclockwise, and in the clockwise rotation direction of the drum 1, the optimal exhaust port 26
The optimum installation angle is the hour hand between 5 o'clock and 6 o'clock.

This means that even when a jet stream is blown from the angle of the hour hand at 2 o'clock, the above description can be read in completely the opposite way due to the symmetrical relationship. Also, even if the spray angle of the jet is varied within the range of the hour hand angle from 9 o'clock to 12 o'clock, drying performance approximately equivalent to that of the hour hand angle of 10 o'clock can be obtained, but beyond this range, it is effective for the space inside the drum l. It becomes difficult to scatter the laundry 12, and the drying ability decreases. In addition, if dry heated air is blown from the axial direction and the outer cylinder direction of the rotating drum l, and the blowing direction is alternately switched at regular intervals, the laundry in the drum can be cleaned in a shorter time.
It can also be heated and dried uniformly.

Next, laundry 12 by the apparatus according to the embodiment of the present invention shown in FIG.
To explain the ease of taking out the laundry 12 with reference to FIGS. 8 and 9, the laundry 12 fed into the rotating drum 1 is
Washed and dehydrated.

At this time, m9 is naturally closed, and the structure is such that water inside the drum 1 does not leak to the outside. laundry,
The damper 40 is closed as shown in FIG. 9 to prevent water from scattering to the outside during the dehydration r14. After washing and dehydration, the damper 40 is first moved to the open position as indicated by the broken line in FIG. 9 using an air cylinder or the like (not shown). Thereafter, when the blower 25 is activated and the drum 1 rotates, the laundry 12 is easily peeled off from the drum 1.

Next, a heater (not shown) provided in the duct opening 5 is operated to perform a drying process. Next, after this drying process, when the door 9 is opened and the damper 40 is closed (the state shown by the solid line in FIG. 9), the air 55 supplied by the blower 25 is
The laundry 12 lifted by the centrifugal force of the beater 17 and the drum 1 is easily discharged from the drum 1 to the outside.

Outside, a wagon 41 shown in FIG. Or it can also be applied to a dryer.

In the washing/dehydrating machine, after the peeling process, the laundry is discharged by opening the door (with the damper 40 closed) without performing the drying process.

(Effect of the invention) When the angle of the chevron of the rotating drum is 180°, when peeling the drum perpendicular to the direction of the centrifugal force acting on the drum, a force of about 10 is sufficient, but the force in the direction perpendicular to the direction of the centrifugal force is sufficient. When removing it,
70% due to laundry getting into the pores of the rotating drum.
It cannot be removed without a certain amount of force. In addition, the water content can be reduced by reducing the angle of the rotating drum.
In this case, the laundry sticks to the chevron-shaped wall of the drum and cannot be removed unless force is applied from the outside.

In the present invention, since the chevron angle is open in the range of 90° to 160°, the water content can be improved. In the case of a chevron-shaped drum, the laundry is pushed toward the top of the chevron-shaped wall surface of the drum during the dewatering process due to centrifugal force and tends to concentrate at the top, so the laundry is concentrated at or near the center of gravity of the chevron-shaped drum. Unbalanced loads occur and vibrations during the dewatering process due to unbalanced loads can be suppressed to a small level. Therefore, according to the present invention, it is possible to make the moisture content distribution within the drum nearly uniform, thereby shortening the drying time.
The effect of preventing overdrying can be enhanced.

Further, since the present invention is provided with a hot air or air blowing nozzle that opens toward the top of the rotating drum, it is effective in preventing laundry from sticking to the inner surface of the drum. That is, in the conventional case, it was necessary to assign young male workers to take out the laundry from the rotating i-ram because a large amount of force was required to remove it from the rotating i-ram, but in the present invention, the laundry is removed from the nozzle at the top of the rotating drum. Even female workers can easily remove the laundry because the binding can be released by blowing out hot air or air. That is, the time required to take out the laundry can be shortened to less than the conventional method A. For example, conventionally it took more than 3 minutes to take out 50 kg of towels, but according to the present invention, it can be done within 0.5 minutes. Furthermore, according to the present invention, there is no need to pull the laundry out of the rotating drum as in the prior art, so the problem of laundry damage can be completely solved.

When the above effects are combined, the present invention has the effect of significantly shortening the time required for the continuous steps of washing, dehydration, and drying compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 (al is a side sectional view of a drum-type laundry processing device showing an embodiment of the present invention, FIG. 1 (bl is an explanatory diagram showing a state in which laundry is pushed out and concentrated at the top of the chevron-shaped drum, Figure 2 is a front view of Figure 1 fa), Figure 3 is a line diagram showing the relationship between the drum crest angle and moisture content, and Figure 4 is a line diagram showing the relationship between the drum crest angle and peeling force. Figure 5 is a diagram showing the moisture content distribution of cotton cloth after centrifugal dewatering at the position in the drum according to the present invention and the conventional method, and Figure 6 is a diagram showing the laundry being blown to the center of the drum during the drying process by the blowing method of the present invention. FIG. 7 is a diagram showing the relationship between drying time and linen moisture content in the present invention and the conventional method. FIG. 10 is a piping diagram of the device shown in FIG. 1, FIGS. 11 and 12 are front sectional views of a suction type laundry processing device proposed in the past, and FIG. It is an AA sectional view of the figure. Explanation of main parts of the figure 1 - Rotating drum 2 - Outer body 3 - Rotating shaft 4 Pulley held drum support wall laundry duct water supply pipe blower 7 - motor 9 - door 11 - air blowing No. 13 - Pin 19 - Hole 22 - Drain pipe 26 - Exhaust port fi 2 Fig. 4 Drum chevron shape 7AX (θ) Force 3 Fig. 9 θ Bu 50 Drum chevron angle X (θ) Fig. 5 (Clothing 90 thickness) Dry shield counterfeit (+) Fig. 9 Fig. 8 Procedural amendment 4 February 9, 1990 Director General of the Patent Office Yoshi 1) Mr. Moon Tsuyoshi ■, Indication of the case Patent application No. 115580 2, Invention Name of Drum-type laundry processing device 3, Relationship to the case of the person making the amendment Patent applicant address 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Name Name
(620) Mitsubishi Heavy Industries, Ltd. Amendment Contents 1: Changed the statement “on the other side” in line 6, page 11 of the specification to “on the other side”
"On the other end," he corrected. 2. Same page 11, 17-18? The description in item ``The input tray is for discharging'' has been corrected to ``The input tray is for discharging''. 3. On page 12, line 7, the description of "washing, etc." is amended to "detergent, etc." 4. The statement ``absorbed'' in the first line of page 21 is corrected to ``sucked in''. Above 5. Date of amendment order. 6. Detailed explanation of the invention subject to amendment.

Claims (1)

[Claims] A multi-hole rotary drum is installed inside the outer shell so that it can rotate freely using a rotating shaft arranged in a nearly horizontal direction, and the front opening can be opened and closed by a door for loading and unloading laundry provided in the outer shell. It is composed of the wall surface of the mold, and its chevron-shaped angle forms an angle of 90° to 160° with respect to the direction of action of centrifugal force.
A drum-type laundry processing apparatus, further comprising a hot air or air blowing nozzle that opens facing the top of the rotating drum.