JPS6355957B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention detects the temperature of a heater and/or a condenser installed in a circulation air passage for drying clothes, displays this digitally on a display device, and detects the temperature of a heater or a condenser installed in a circulation air passage for drying clothes, or displays this digitally on a display device. This system raises safety by issuing a warning and stopping operation at the same time.

The following explanation will be given based on the figures. In FIG. 1, a door 1 is used to put items to be washed into a cylinder (not shown). The power switch 2 is used to turn on and off the power of this device. The keyboard switch 51 is an input device for sending various information to a microcomputer (hereinafter referred to as microcomputer).
The display device 4 is for displaying operating time, temperature, stroke, etc. Tank 1, 5, Tank 2,
Reference numeral 6 is for storing a washing liquid (perchloroethane in this apparatus, hereinafter referred to as solvent). The button trap 7 is a device for collecting buttons and the like that are damaged during washing. The filter 8 is for cleaning the solvent, and the distiller 9 is a device for distilling the solvent used for cleaning into a new liquid. The dry air circulation ventilation path 10 is for circulating hot air during drying. Water separator 11
is for removing water from the solution recovered by drying or distillation. The pump 12 is for moving the solvent, and the solvent pumped up from the tanks 1 and 5 or the tanks 2 and 6 is sent to the cylinder through the filter 8.

Referring to FIG. 2, the solvent sucked up from the tanks 1, 5 or 2, 6 by the pump 12 is pressurized by the pump 12 through valves 13 and 14, and flows into the distiller 9 through the distiller valve 15. It is also sent to the filter 8 through the filter circulation valve 16 and filtered by the filter. When the water does not flow through the filter 8, it flows through the filter bypass valve 17. At this time, if the cylinder valve 18 is opened, the solvent is supplied to the cylinder 19. When button trap valve 20 is opened and cylinder valve 18 is closed, no solvent enters the cylinder. The drain valve 21 is connected to the cylinder 1
Open when discharging the solvent in 9 or circulating the filter. The soap input valve 22 is a valve for supplying soap put into the soap hopper 23 to the cylinder 19 during washing. The heater 24 is designed to pass steam into the interior through a steam valve 25 during the drying process, and the blower B heats the air circulating in the drying circulation air passage 10 and sends it to the cylinder 19 to remove the solvent from the items to be washed. Evaporate. The evaporated solvent is cooled and condensed by a cooler 26, and then passed through a recovery valve 27 and a water separator 1.
1 and is collected into tanks 2 and 6. cooler 2
6 is cooled by a refrigerator O. The two thermistors 28 and 29 are for measuring the temperature of the air that has passed through the heater 24 and cooler 26, respectively. Thermistor 28 measures the temperature at the inlet of the processing tank. During drying, the temperature measured by this thermistor 28 is compared with a specified drying temperature (described later) to open and close the steam valve 25 to control the temperature at the inlet of the processing tank during drying, so that abnormally high temperature air comes into contact with the items to be washed. prevent this from happening. Thermistor 29 measures the temperature at the cooler outlet. If the temperature at the outlet of the cooler becomes high, the solvent cannot be recovered, so if the temperature exceeds a predetermined temperature, for example 30°C, the operation will be stopped and an alarm will be issued using a buzzer or the like. The intake valve 30 and the exhaust valve 31 operate during the deodorizing process and when the door 1 is opened, and exhaust the solvent vapor remaining in the tank from the exhaust port 32. The distiller 9 heats and evaporates the solvent supplied via the distiller valve 15 using steam. This vapor is condensed in a distillation condenser 33 and returned to tanks 2 and 6 through a water separator 11. The button trap 7 is provided with a liquid level switch high 34 and a liquid level switch low 35, by which the liquid level in the cylinder 19 is controlled. The air vent valve 36 is provided to facilitate movement of the solvent since the inside of the tank has a sealed structure.

In FIG. 3, 37 is a CPU that processes the entire drying machine system. 38 is an accumulator, 3
9 is a temporary register, 40 is an arithmetic unit (ALU) that performs arithmetic and logical operations on register data, 41 is a control unit that issues system control timing signals, and 42 and 43 transfer address data between systems. This is an address data bus buffer for ROMs 45 and 46 store coded programs for operating the drying machine as intended. 47 and 48 are input/output units that decode data from switches 52 such as a keyboard switch 51, door switch, vibration switch, etc., and also turn on the LED and fluorescent display tube of the display unit 50 and turn the external output 53 on and off. This is an I/O interface for ports. 49 is a RAM for reading and writing processing data.

FIG. 4 is a detailed view of the keyboard switch 51 of FIG. 3. After pressing the program 51a, if you press the number key 51b, ROM2,
It has the function of extracting one block from the data of a plurality of fully automatic operation cycles stored in the RAM 46, transferring that data to the RAM 49, and operating the fully automatic cycle simply by pressing the start button 51e. When the manual mode 51c is pressed, the mode becomes manual mode, and when the number key 14b is pressed after pressing the function keys 51f to 51p, it has the function of allowing single operation for a set time. The function keys 51f to 51p have the function of changing the operating time of the process in automatic mode, and selecting a process and setting the operating time in manual mode. The drying temperature 51Q has a temperature setting function for the drying process. Soft dry 51R
In the drying process, you can set the time for switching from weak drying to strong drying. 51s to 51v are special operation selection keys, which have the function of performing filter circulation cleaning in the cleaning process when filter circulation 51S is pressed.
The filter bypass 51T has the function of filter bypass cleaning in the cleaning process, the low liquid level 51u has the function of regulating the supply of liquid to a low liquid level, and the soaking wash 51V has the function of controlling the reversal period of the cleaning motors 54 and 55 by 20 It has the function to change from 2 seconds ON to 3 seconds OFF or 2 seconds ON to 20 seconds OFF. The soap 51W has a function of opening the soap valve 22 when pressed during the washing process and injecting soap into the tank.

FIG. 5 is a detailed diagram of the display unit 50 shown in FIG. 5
The fluorescent display tube 0a digitally displays the operating time of each process during operation, and the segments 50b to 50i display cycle numbers of a plurality of fully automatic cycles. A fluorescent display tube 50j displays the temperature measured inside the tank. The two digits on the right side display the temperature measured at the outlet of the cooler, and after the power is turned on, the measurement is always displayed until the power is turned off. The two digits on the left side display the temperature measured at the cylinder inlet, which is measured and displayed only during drying and deodorizing operations.
50P is a group of LEDs that display the operation process. In automatic mode, the LEDs for all processes in the fully automatic cycle are lit before the start, and when the start key is pressed to start operation, only the LEDs for each process are lit. In manual mode, function key 51f~
Only LEDs compatible with 51p will light up.

Next, a typical operation of this drying machine will be explained based on an embodiment. FIG. 6 is a flowchart showing the operation of this drying machine.

When power switch 2 is turned on, the data goes to RAM49.
Transfer the fully automatic cycle data of program 1 from the ROM 46. This lights up the segments of fluorescent display tubes 50a and 50b. Also LED group 5
0P is “from tank 1”, “to distiller”, “tank 1”
``To'', ``Deliquifying'', ``Drying'', ``Deodorizing'', and in the case of a 2-bath type, ``From Tank 2'' lights up, and in the case of a 3-bath type, ``From Tank 3'' lights up.

When you press the start key, the operation time of each process is already determined, but for example, tank 1
When the user presses the 51f key and enters a numerical value by pressing the number key 51b, the operating time of the specified process is corrected to that time. For the operation cycle after pressing the start key 51e, it is first checked whether the operation is manual or automatic. If it is done manually, there is no display of the entire process time, so operation begins immediately. In the case of automatic operation, operation begins after calculating the total process time.

R1 Liquid supply/cleaning from tank 1 Tank 1 valve 13 opens, cleaning motor right 54
rotates in one direction. When the liquid level switch low 35 or high 34 trips, the tank 1 valve 13 closes and the cleaning motors 54, 55 begin to reverse. At this time, if the liquid level switch 34 or 35 does not trip even after 60 seconds, the display tube 50j shows "E".
4" is displayed, the operation is stopped, and the buzzer (not shown) and LED 50P flash to issue an alarm. The reversal cycle is determined by the lighting and extinguishing of the soaking water 50L. During this process, press the soap key 51W. Then, the soap injection valve 22 opens and soap is injected.The operating time is subtracted every second, and the value is displayed on the fluorescent display tube 50a.

R2 Draining liquid to the distiller Rotate the pump 12 for 30 seconds to transfer the solvent in the cylinder 19 to the distiller 9. This process is designed so that the time cannot be changed. This is because there is no need to change the time, and changing the time would interfere with driving.

R3 Deliquing into the distiller After rotating the washing motor right 54 for 10 seconds, switch to the deliquing motor 56 to perform deliquing. At this time, if the vibration switch (not shown) is activated, the liquid removal motor 56
is stopped, returned to the cleaning motor 54, and operated in the same manner. For example, if you repeat this action 5 times, you will get 50 E3.
j, stops operation, and issues an alarm. If the stop key 51d is pressed during the delitting operation, the delitting motor 56 is stopped and the cleaning motor 5 is stopped for a predetermined period of time, for example, 5 seconds.
4 is rotated to apply regenerative braking to prevent danger. The brake is also applied in the same way when the door 1 is opened during the deliquoring operation. In addition, when the door 1 is opened, the intake and exhaust valves 30,
31 is opened and the high-speed blower motor 58 is operated to exhaust the solvent vapor outside the room to prevent people from inhaling it.

R4 Liquid supply from tank 2 or tank 3 Tank 2 valve 14 or tank 3 valve 5
9 (if tank 3 is present) and supply liquid. Other operations are similar to R1.

R5 Drain liquid to tank 1 for 30 seconds drain valve 21 and tank 1 valve 1
3 and drain the solvent in the cylinder 19 into the tank 1,
Drain into 5. The time cannot be changed for this process either.

R6 Deliquing to tank 1 R3 except that distiller valve 15 is closed, pump 12 is not operated, and tank 1 valve 13 is opened.
The process is similar to that of The operating time of this step can be modified by pressing the deliquification key 51m and using the number key 51b.

R7 Drying (see Figure 6) The operating time can be adjusted using the drying key 51n.
If a time setting is set by pressing the soft drying key 51R and the number key 51b, soft drying is performed for that time, and strong drying operation is performed for the remaining time obtained by subtracting the soft drying time from the drying time. The soft drying operation is an operation in which the cleaning motors 54 and 55 are reversed and the medium speed blower motor 57 is rotated, and the strong drying is an operation in which the high speed blower motor 58 is rotated. By pressing the drying temperature key 51Q and pressing the number keys, the drying temperature can be set or corrected. The drying temperature is measured by a thermistor 28 and
Controlled by ON and OFF. Remaining drying time is 2
When the minute comes, the steam valve 25 is closed to allow only the washing motor to rotate. If there are still 2 minutes or more remaining, check to see if the set temperature has reached 0.
If the set temperature is set to 0° C. due to erroneous operation of the number key 51b or mischief, it is useless to continue the drying operation, so the drying operation is stopped. Then the above
Calculating unit 4 calculates the set temperature written in RAM 49.
0 and subtracts it from the temperature at the cylinder inlet measured by the thermistor 28. When the measured temperature is higher than the set temperature, 1 is set in address D0 of the RAM 49, and if the result of the subtraction is 10 or more, It is determined that there is a mechanical failure and "E1" is displayed on the fluorescent display tube 50j.
When displayed, an alarm is issued and operation is stopped. "E1" means abnormally high temperature. If the subtraction result is 10 or less, the content of the D0 address is 1, so the steam valve 25 is closed. Next, the temperature at the outlet of the cooler is also examined, and if the temperature is 30° C. or higher, it is determined that the cooling device has failed, and "E5" is displayed on the fluorescent display tube 50j. If the temperature is below 30℃, check again whether soft drying is being performed and perform the same operation. On the other hand, if the temperature measured by the thermistor 28 is lower than the set temperature, check whether the content of the D0 address is 1 or not;
If it is not 1, the steam valve 25 opens and the heater 2
Continue heating in step 4. If the content of the D0 address is 1 (limited to cases where the measured temperature has once been 10°C or more higher than the set temperature), if the measured temperature is 2°C or more lower than the set temperature, the D0 address is set to 0. and open the steam valve 25 to perform heating.
When the temperature does not drop by 2°C or more, the content of address D0 is 1, so the steam valve 25 is closed.

In this way, the temperature at the inlet of the cylinder 19 and the temperature at the outlet of the cooler 26 are controlled, and when an abnormal condition occurs, it is displayed and at the same time an alarm is issued to stop the operation.

R8 Deodorization Time can be adjusted using the deodorization key 51o and numerical key 51b. In parallel with the reversal of the cleaning motors 54 and 55, the intake and exhaust valves 30 and 31 open, the high speed blower motor 58 rotates, and the solvent vapor remaining in the tank is discharged. When all processes are completed, a 10-second final buzzer sounds and the operation ends. If the start key 51e is pressed in this state, the same fully automatic cycle will be repeated. Further, even if the mode is changed to the manual mode after this and single operation is performed, pressing the program key 51a returns to the fully automatic cycle before switching to the manual mode.

The above is an example of typical fully automatic cycle operation. If the start key 51e is pressed during operation, the remaining time of the current process will be displayed on the fluorescent display tube 50a.
The remaining time for the entire process is displayed. When you stop pressing, the remaining time of the current process will be displayed again. When the program key 51a is pressed, a display showing all the steps of the fully automatic cycle that was displayed before the start appears on the LED group 50P.

Data on each process time and drying temperature that define the fully automatic operation cycle is obtained by transferring data stored in the ROM2 (46) to the RAM49. This data transfer is performed using program key 51.
This is done by pressing numeric key 51b after pressing a. In this example, there are 8 types of driving cycles.
Stored in ROM2,46. therefore
By changing the data stored in the ROMs 2 and 46, each process time and drying temperature can be changed, and the operating specifications of the drying machine can be changed. When the above operation cycle is specified, the entire stroke time is displayed on the fluorescent display tube 50b. In addition, if the liquid levels in the tanks 1 and 5 drop abnormally, it is detected by the tank liquid level switch 60, and normal cleaning cannot be performed, so the operation is stopped and the fluorescent display tube 50
"E7" is displayed on j, buzzer 61 and LED 50
A warning is issued by flashing P.

As described above, the present invention digitally displays the temperature at the cylinder inlet, the temperature at the cooler outlet, or both temperatures, so that the user can feel confident knowing the drying temperature of clothes or the condensing temperature of the solvent. Calculations are constantly repeated between the set temperature and the current temperature, and when the temperature reaches an abnormal temperature, an alarm is issued and the operation is stopped at the same time, so a highly safe dry cleaner can be provided.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the dry cleaner of the present invention;
The figure is a piping diagram showing the flow of the solvent, Figure 3 is a block diagram of the microcomputer, Figure 4 is a detailed diagram of the keyboard switch, Figure 5 is a detailed diagram of the display device, and Figure 6 is a flowchart showing the operation. be. 19...Cylinder, 10...Drying circulation ventilation path, 2
4...Heater, 26...Cooler, 45...First
ROM, 46...Second ROM, 51...Keyboard switch, 49...RAM, 40...Arithmetic unit, 28,2
9...Thermistor, 50...Display section.

Claims (1)

[Claims] 1 In a drying circulation air passage connected at both ends to a washing cylinder, which is equipped with a heater for solvent evaporation and a cooler for solvent condensation, the control unit has a read-only memory that stores the washing program. , a write memory for storing a washing program read from a read-only memory by a keyboard switch, and an arithmetic unit for performing arithmetic and logical operations, and the temperature of the cylinder inlet or the cooler outlet or both can be measured by a thermistor or the like. The detected value is digitally displayed on the display unit through the arithmetic unit, and at the same time, it is compared with the set value stored in the write memory, and when the detected value is larger than the set value by a predetermined number or more, the display unit is displayed. A dry cleaner characterized in that the digital display is changed to an abnormality display using symbols, etc., and the operation is stopped at the same time as an alarm is issued.