JP3377559B2 - Dehydration method and apparatus for dehydrator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dewatering method and apparatus for a dewatering machine, in which laundry such as clothes after washing is dehydrated by squeezing with a fluid pressure enclosed in a membrane.

[0002]

2. Description of the Related Art In a dehydrator for dehydrating clothes such as clothes after washing by squeezing with a fluid pressure enclosed in a membrane,
As a method for inputting a dehydration pressure pattern suitable for laundry to a hydraulic control device of a hydraulic cylinder for pressurizing a membrane, the method shown in the side view of FIG.
Proposed as No. 657. That is, in FIG. 3, the laundry 1 is loaded into the loading chute 4 of the continuous water washing machine 3 by the bucket conveyor 2, the laundry 1 is washed while passing through the inside of the continuous water washing machine 3 , and the basket 6 of the dehydrator 5 is loaded. via an opening 7 formed in the upper portion of, it is introduced into basket 6. The laundry 1 thrown into the basket 6 is pressurized and dehydrated by a membrane ( not shown) attached to a bowl-shaped member 9 which is lowered by the operation of the hydraulic cylinder 8. The line control control panel 11 has
Signals indicating respective operating conditions are sent from the bucket conveyor 2 and the continuous washing machine 3, and the control panel 11
From the above, the hydraulic control device 10 of the dehydrator 5 is periodically sent a signal relating to the operating condition and a type-specific signal of the laundry 1.

[0003] Thus, when the laundry 1 is turned from the continuous washing machine 3 to the basket 6 a dehydrator 5, the shift register function from rice laundry type switch 12 Line Control control board 11 e Bei the laundry 1 signal indicating the type is sent to the hydraulic control device 10 of the dehydrator 5, the dehydration time selection circuit of the hydraulic control device 10 automatically selects the dewatering pressure pattern that fits the laundry 1, the dehydration Control.

[0004] The diagram of FIG. 4 shows an example of the pressure pattern during the dewatering, in the case of the laundry towel, T [alpha optimal dewatering time T ₀ for laundry sheets or the like dewatering time Is added to extend the maximum pressure holding time from T ₂ to T ₃ . This will be described with a specific example. In the case of clothes with poor drainage such as a towel, for example, if the dehydration time is also extended from T ₀ to Tα = 18 seconds, the maximum pressure holding time T ₃ is extended by 18 seconds, and therefore the residual water The rate is improved by 10%.
As a result , the drying time in the subsequent drying process is shortened by 420 seconds. Therefore, for example, when the dry weight of the towel is 50 kg / batch, (energy water evaporates in 20 ° C from 100 ° C Atsushi Nobori plus 5 l (liter)) 5 l (liter) of water energy to evaporate
The energy saving of 3000 Kcal / batch and the shortening of the drying time are not required, so that it is not necessary to add an additional dryer, and therefore, no additional space is required. In other words, for dehydrator
Hey by extending the drainage time 18 seconds, second subsequent drying time 402 (420-18 = 402 sec) which may line operation rate of shortened efficiency is obtained and, laundry 5
There is an energy saving effect of 3000 Kcal per 0 kg each time.

[0005] The diagram of Figure 5 shows another example of the pressure pattern during the dehydration, in the case of hardly occurs laundry torn towel, omitting preliminary dewatering pressure time T _4, T _5, or shortening Then, the voltage is raised earlier than the conventional pattern P ₁ . For example, as shown in the improved pressure pattern P ₂ , the pressure is quickly raised for the time T ₆ , or as shown in the pressure pattern P ₃ for rapid pressurization, the pressure is suddenly raised, and the time T _{7 is} shortened to reach the maximum pressure. Try to improve. The time T ₇ is shorter than the conventional pre-dewatering pressure time (T ₄ + T ₅₎ is, at the start dehydration, free water and air or the like comes out time included in the laundry _{(T 4 + T 5 -T 7} ) This is because it costs. Specifically, in the case of laundry such as towels which does not require pressure control by pre-pressurization, about 5% improvement in residual water content is obtained, and in the case of 50 kg of one batch, it is about 2.5 liters.
Of water (l), heat energy to raise the temperature and evaporation from 20 ° C to 100 ° C each time 1500Kcal also the section <br/> be about, leading to large energy savings.

However, in the method of simply controlling such a determined pressure dehydration pattern at a timing determined according to the type of clothing, the laundry 1 after pressure dehydration is carried out.
Dehydration rate is not constant. That is, the amount of water contained in the laundry 1 carried over from the continuous washing machine 3 in the previous step, the material of clothing,
For many conditions such as water absorption, product type, etc., only by the pressurizing operation by the timing program having the pattern corresponding to the type of the laundry 1, feedback to the hydraulic control device 10 for confirmation that the maximum pressure is reached can be obtained. Sarezu, depending on the laundry 1 will up early pressure, or too long holding time at high pressure, the timing of the operation even if or there is a state that does not quite rise is pressure to reverse the will proceed as programmed As a result, the maximum pressure holding time is too short, and the residual water rate may change by ± 20% depending on the conditions. For example, when the optimum residual water ratio is 50%, it may be soaked to 70% in some cases. In addition, the time until the maximum pressure is reached varies depending on the state of the laundry 1 before dehydration, and the maximum pressurization time is not constant.

[0007]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and can surely maintain the maximum dewatering pressure and its holding time, which are determined by the type of laundry, so that the laundry can be washed. It is possible to control the residual water content of the product to the optimum value for post-treatment, so that the laundry requires a large amount of heat energy in the drying process until dehydration is insufficient, or conversely the residual water content is too small and wrinkles remain. It is an object of the present invention to provide a dewatering method and device for a dewatering machine, which can save energy and obtain a stable finish quality of laundry.

[0008]

Means for Solving the Problems] dehydration process of the dehydrator of the present invention in order that the dehydrating dehydrator for dehydrating by pressing with a fluid pressure laundry encapsulated in a membrane, such as clothing after washing
A law, those or to perform dehydration by entering the dewatering pressure pattern that matches the laundry to the hydraulic control system for a hydraulic cylinder for pressurizing the membrane, best suited to the type of laundry dewatering pressure and holding time Is input, the dehydration pressure is detected during the dehydration work, and the dehydration pressure rises according to the actual laundry.
Dehydration pressure required to reach the maximum dehydration pressure above
Even if the rise time is different, the maximum dehydration pressure will be
So that it is maintained for
From the time when the elevated dehydration pressure reaches the maximum dehydration pressure,
Dehydration at the maximum dehydration pressure above until the holding time elapses
When the above dehydration pressure reaches the maximum dehydration pressure
Maximum dewatering pressure when the holding time elapses from the point
The feature is that dehydration by
And, dehydrator dehydrator of the present invention, a laundry clothes or the like after washing a dehydrator dehydrator for dehydrating by pressing hydraulically sealed in the membrane, and a hydraulic cylinder for pressurizing the membrane, Detect dewatering pressure during dewatering
The pressure sensor and the drive control circuit of the hydraulic cylinder are installed to provide the maximum dehydration pressure and
Is a between time of holding the input, starts rising after the next the dewatering pressure
The second time when the same dehydration pressure reached the maximum dehydration pressure
When the maximum dehydration pressure holding timer starts counting time,
The maximum dehydration pressure above when the maximum dehydration pressure holding time has elapsed
Receiving the signal from the power retention timer to reach the maximum dehydration pressure above
It characterized in that e Bei a hydraulic control unit to terminate the dewatering by.

[0009]

According to the present invention, the type of laundry to be sent to the dehydrator is determined on the side of the water washing machine, and a dehydration pressure pattern selection signal suitable for this is sent. The dehydrator pressurizes the laundry according to the determined dehydration pressure pattern, and when the maximum dehydration pressure specified for the laundry is reached, it is detected by the pressure sensor attached to the hydraulic cylinder or the membrane holding member and the timer is activated. After starting the operation and applying pressure for the time set in the same timer, it returns to the dehydration pressure pattern to lower the pressure and raise the membrane.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the dehydration method and device for a dehydrator of the present invention are applied to a continuous water washing / dehydrating device will be described with reference to the drawings. FIG. 1 is a schematic diagram of an apparatus for carrying out the dehydration method, and FIG. FIG. 6 is a diagram of the dehydration pressure pattern of the method. Before explaining the apparatus for carrying out the method of the present invention, the system of the continuous water washing / dehydrating machine is re-described with reference to FIG. 3 described above. When the laundry 1 is put into the continuous water washing machine 3, it is identified and input. The signal for each type of laundry 1 is the line control control panel 1
With the shift register function of No. 1, the continuous water washer 3 is sequentially sent to reach the dehydrator 5 each time it passes through each process, and the dehydrator 5
A signal suitable for the type of laundry 1 is input to the hydraulic control device 10. The hydraulic control device 10 receiving the type-specific signal of the laundry 1 automatically controls the dehydration work by automatically selecting the dehydration pressure pattern suitable for the laundry 1 by the dehydration time selection circuit provided therein.

The details of the dehydrator 5 according to the present invention for controlling the dehydration work will be described with reference to FIG. 1. The laundry 1 is loaded on the upper part of the bottomless basket 6 of the dehydrator 5 which is vertically movable. An opening 7 is formed, and a belt conveyor 13 having a porous surface that is intermittently driven is installed at the bottom, and a bowl is provided at the lower end of a piston rod 14 of a hydraulic cylinder 8 arranged above the dehydrator 5. The shaped member 9 is attached, and the membrane 15 is attached to the water 16 on the bowl shaped member 9.
The outer circumference is closely attached so as to seal. The drive control circuit 17 of the hydraulic cylinder 8 is composed of a hydraulic control device 10, an electromagnetic switching valve 18 and a pressure control valve 19, and the hydraulic control device 10 previously has a pressure control valve 19
Is adjusted to a single or multiple set pressures suitable for laundry 1,
The pressure-time relationship set according to the type of the laundry 1 is achieved. The electromagnetic switching valve 18 switches the high pressure oil supplied from the pump 20 to lower and raise the piston rod 14, that is, when the upper solenoid 18a is excited, the piston rod 14 is lowered and the laundry 1 is pressurized and dehydrated. However, when the lower solenoid 18b is excited, the piston rod 14 moves up. The pressure control valve 19 has a function of keeping the dehydration pressure at a predetermined pressure, and when the hydraulic pressure exceeds the predetermined pressure, a signal from the hydraulic control device 10 causes the oil 21 in the high pressure circuit to be relieved and relieved. The oil 21 is returned to the oil tank 23 via the return pipe 22.

A pressure sensor 24 is attached to the upper part of the hydraulic cylinder 8. The pressure sensor 24 detects the maximum pressure on the dehydration pressurizing side of the hydraulic cylinder 8 and sends a signal to the hydraulic control device 10 to send the same. A maximum pressure holding timer of a dehydration time selection circuit provided in 10 is activated, and the timer holds the maximum dehydration pressure for a predetermined time. Further, the pressure sensor 24 may be attached to the bowl-shaped member 9 which is a pressurizing member to detect the pressure of the water 16 sealed in the membrane 15 and send a signal to the hydraulic control device 10.

In such an apparatus, the laundry 1 is put into the basket 6 of the dehydrator 5 after being processed in the continuous washing machine in the previous step. According to an instruction from the line control control panel, the dehydration pattern, the maximum dehydration pressure and the holding time thereof suitable for the type of the laundry 1 are input to the hydraulic control device 10, and the dehydration work is started. The oil 21 supplied from the pump 20 passes through the pressure control valve 19 and the electromagnetic switching valve 18 and enters the upper port of the hydraulic cylinder 8, and the piston rod 14
The membrane 15 is pressed down via. According to the instructions of the dehydration pattern, the laundry 1 is temporarily pressed at a low pressure and then a high pressure. Water of laundry 1 is pushed out first, then laundry 1
The oil pressure gradually rises in the process of being squeezed to reach the maximum dehydration pressure. A short time before the maximum pressure, the signal from the pressure sensor 24 causes the maximum pressure holding timer to start counting time. The maximum pressure is controlled by the pressure control valve 19. When the maximum pressure holding timer transmits the arrival of time, the pattern returns to the dehydration pattern, the electromagnetic switching valve 18 is switched, the membrane 15 rises, the basket 6 also rises, and the belt conveyor 13 carries out the dehydrated laundry 1 to the next step. Send to.

FIG. 2 shows the dehydration pressure pattern of the dehydration control method in which the maximum dehydration pressure is detected and is fed back to the maximum pressure holding timer of the hydraulic control device 10 to keep the maximum pressure holding time constant. to illustrate, FIG. 2 is a pile fabric of soft, large examples of laundry 1 of water containing such as towels, the a curve shown by the solid line, the pressure upon squeezing the standard towel according dewatering pressure pattern However, the water content, elasticity, etc. vary depending on the thickness of the towel, the age of the towel, the density of the towel, etc. Even when working with the same dehydration pressure pattern, for example, a towel with a high water content has a
The pressure rise is slow like the B curve drawn by the dotted chain line, and the pressure rise is fast with the towel with a low solid water content as shown by the C curve drawn by the three-dot chain line in the figure. The pressure sensor 24 attached to the hydraulic cylinder 8 supplies a pressure slightly before reaching the maximum pressure determined by the dehydration pressure pattern.
Is detected and sends a signal to the hydraulic control device 10,
Activate the timer within 0. After the maximum pressure holding time T set to match the laundry 1 has elapsed, the timer gives a signal to switch the hydraulic pressure to raise the piston rod 14 and lower the pressure.

Thus, according to such a dewatering method, the maximum dewatering pressure can always be maintained for a certain period of time adapted to the laundry 1, so that an appropriate residual water ratio can be obtained after the laundry 1 is dewatered. Therefore, the laundry 1 is soaked with a lot of heat energy in the next drying step, and conversely, the residual water content is too small to leave wrinkles on the laundry 1, which leads to energy saving and washing. The effect of good finish quality of the product 1 can be obtained. Further, depending on the type of the laundry 1, the maximum dehydration pressure can be changed to a lower position to deal with the dehydration of the laundry 1 which is easily broken by high pressure dehydration.

[0016]

According to dehydration process of the dehydrator of the Effect of the Invention] In summary the present invention, there in the dehydration method of the dehydrator for dehydrating by pressing in the laundry fluid pressure encapsulated in a membrane of the garment or the like after washing
Te, type the maximum dewatering pressure and its retention time equivalent or, appropriate for the type of laundry to perform dehydration by entering the dewatering pressure pattern that matches the laundry to the hydraulic control system for a hydraulic cylinder for pressurizing the membrane In addition, the dehydration pressure is detected during the dehydration work, and the dehydration pressure starts to rise according to the actual laundry.
Dehydration pressure rise time required to reach the maximum dehydration pressure
, The maximum dehydration pressure is maintained for the above retention time.
As shown in Fig.
From the time when the water pressure reaches the maximum dehydration pressure, the above retention time
Continue dehydration at the above maximum dehydration pressure until the time passes
From the time when the dehydration pressure reaches the maximum dehydration pressure
Depending on the maximum dehydration pressure when the holding time elapses
The dehydration is completed , and the dehydrator of the dehydrator of the present invention is also used.
According to the apparatus, dewatering machine dewatering device for dewatering by squeezing a fluid pressure laundry encapsulated in a membrane, such as clothing after washing
A hydraulic cylinder that pressurizes the membrane, and a pressure sensor that detects dehydration pressure during dehydration work,
Disposed in the drive control circuit of the hydraulic cylinder, the washing
Enter the maximum dehydration pressure and its holding time suitable for the type of rinse.
Force is applied and the dehydration pressure gradually increases after the start of the increase.
Holds the maximum dehydration pressure when the water pressure reaches the maximum dehydration pressure
Cause the timer to start timing operation to maintain the above maximum dehydration pressure
When the time elapses, does the maximum dehydration pressure hold timer
In response to these signals, the dehydration at the maximum dehydration pressure above is completed.
By providing a hydraulic control device that makes it possible to reliably maintain the maximum dehydration pressure and its holding time determined by the type of laundry, it is possible to control the residual water content of the laundry to the optimum post-treatment value, Therefore laundry or takes a long thermal energy in the drying process in poor orゝdehydration, conversely wrinkles remaining water ratio is too small, no often a useful Tsu residue, stable energy conservation and laundry finished quality is obtained Luca <br/> et al, the present invention is extremely useful industrially.

[Brief description of drawings]

FIG. 1 shows a dehydration method and apparatus for a dehydrator according to the present invention,
It is a schematic diagram of the implementation device in one example applied to the dehydrator.

FIG. 2 is a diagram of a dehydration pressure pattern of the present dehydration method.

FIG. 3 is a side view of a conventional continuous water washing / dehydrating machine.

FIG. 4 is a diagram of a conventional dehydration pressure pattern.

FIG. 5 is a diagram of another conventional dehydration pressure pattern.

[Explanation of symbols]

1 laundry 2 bucket conveyor 3 continuous water washer 4 throwing chute 5 dehydrator 6 baskets 7 openings 8 hydraulic cylinders 9 Bowl-shaped member 10 Hydraulic control device 11 line control control panel 12 Laundry type switch 13 Belt conveyor 14 Piston rod 15 Membrane 16 water 17 Drive control circuit 18 Solenoid switching valve 19 Pressure control valve 20 pumps 21 oil 22 Return pipe 23 oil tank 24 Pressure sensor

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) D06F 47/06

Claims (2)

(57) [Claims] 1. A dewatering method for a dewatering machine , in which laundry such as clothes after washing is dehydrated by squeezing with a fluid pressure enclosed in a membrane.
A is, those or to perform dehydration by entering the dewatering pressure pattern that matches the laundry to the hydraulic control system for a hydraulic cylinder for pressurizing the membrane, the maximum dewatering pressure suitable for the type of laundry and its retention time Input the data, detect the dehydration pressure during the dehydration work, and start increasing the dehydration pressure according to the actual laundry.
Later on the dehydration pressure required to reach the above maximum dehydration pressure
Even if the rise time is different, the maximum dehydration pressure is the retention time
Gradually increased after the dewatering pressure starts to increase so that it is maintained
Hold the above from the time when the dehydrated pressure reaches the maximum dehydrated pressure.
Dewater with the above maximum dehydration pressure until the time passes
When the above dehydration pressure reaches the maximum dehydration pressure
To the above maximum dehydration pressure when the holding time elapses from
A dehydration method for a dehydrator, which is characterized in that the dehydration according to the above is completed . 2. A dewatering machine dewatering device for dewatering by squeezing a fluid pressure laundry encapsulated in a membrane of the garment or the like after washing
A hydraulic cylinder that pressurizes the membrane, and a pressure sensor that detects dehydration pressure during dehydration work,
Disposed in the drive control circuit of the hydraulic cylinder, the washing
Enter the maximum dehydration pressure and its holding time suitable for the type of rinse.
Force is applied and the dehydration pressure gradually increases after the start of the increase.
Holds the maximum dehydration pressure when the water pressure reaches the maximum dehydration pressure
Cause the timer to start timing operation to maintain the above maximum dehydration pressure
When the time elapses, does the maximum dehydration pressure hold timer
In response to these signals, the dehydration at the maximum dehydration pressure above is completed.
A dehydrator for a dehydrator, comprising: