JP2919482B2 - Drying equipment - Google Patents

Description

The present invention relates to a drying device provided in a cleaning device such as a household clothes dryer or a dry cleaner.

(B) Conventional technology As a conventional example, a drying apparatus that sets a drying time and a drying temperature and executes a drying operation until the set time is completed is disclosed in
-55957 (D06F43 / 08).

(C) Problems to be Solved by the Invention In the conventional example, there is a problem that, for example, when the drying time is set to 10 minutes and the setting is mistakenly set to 10 seconds, the drying is hardly performed.

The present invention solves such a problem in a drying apparatus.

(D) Means for Solving the Problems The drying apparatus of the present invention includes control means for controlling the operation of the drying mechanism based on the set drying time and the set drying temperature. The control means starts the timing of the drying time with the start of the drying step, and ends the drying operation in response to the measured time reaching the set drying time, the control means, Until the drying temperature obtained during the execution of the drying step reaches the set drying temperature, the drying operation is continued regardless of whether or not the timed time has reached the set drying time. It is characterized by the following.

(E) Function That is, even if the drying time ends before the set temperature is reached,
Perform the drying operation at least until the set temperature is reached,
Ensure a minimum drying effect.

(F) Example An example of the present invention will be described with reference to the drawings.

In FIG. 1, (1) is a solvent tank (with an internal volume of about 100
), And contains a solvent such as 1.1.1 trichloroethane or perchlorethylene. Reference numeral (2) denotes a cleaning tank disposed above the tank (1). In the cleaning tank (2), a cleaning drum (3) having a large number of drain holes around it is rotatably disposed. Have been. The tank (1)
The solvent in the cleaning tank (2) passes through the main liquid supply passage (4).
And the solvent in the washing tank (2) is collected in the tank (1) through a main drainage path (5). The main liquid supply path (4) is provided with a liquid supply pump ( 6), valve A
(7), cartridge type filter (8), three-way valve B
Through (9), the cleaning tank (2) is reached. When the filter (8) is not used, the valve (10) is opened to bypass the filter (8).

The main drain passage (5) is provided with a button trap (11), a drain pump (12), and a valve D communicating with the bottom of the washing tank (2).
(13) The tank (1) is reached via the filter (8) and the three-way valve (9). The button trap (11)
Inside, a coarse strainer (14) is disposed, thereby removing gravel and the like in the solvent. (11) is a liquid level detecting device provided in the button trap (11), and reed switches (16) and (17) provided at a low liquid level and an upper liquid level, respectively, Switch (16) (1
7) It is composed of a float magnet (18) that moves up and down between them.

That is, when there is no liquid in the cleaning tank (2), the magnet (18) moves down by its own weight, and the reed switch (16) is turned off. In addition, the reed switch (1
7) is also in the OFF state. When the liquid level in the tank rises and exceeds the low liquid level, the magnet (18) moves upward and separates from the reed switch (16), and the reed switch (16) is turned on. Further, when the liquid level rises and reaches the upper limit liquid level, the magnet (18) is moved by the reed switch (1).
The reed switch (17) is turned on close to 7).

The ON and OFF signals of the reed switches (16) and (17)
When the reed switch (16) is turned on and the reed switch (17) is turned off, a low liquid level is input to the microcomputer described later, and both reed switches (16) and (17)
The upper limit liquid level is detected when it is turned on.

(19) is a regeneration path which is branched from just before the filter (8), and is provided with a valve E (20), a still (21), a condenser (22),
It reaches the tank (1) via a water separator (23). The still (21) heats and gasifies the solvent, and the condenser (2)
2). The condenser (22) has a built-in cooling pipe (24), cools and liquefies the solvent gas from the still (21), and introduces it into the water separator (23). The water separator (2
3) separating the liquefied solvent from the condenser (22) with a specific gravity, and returning a clean solvent to the tank (1). Note that a cooling pipe is also provided in the water separator (23).

Here, the structures of the condenser (22) and the water separator (23) will be described with reference to FIG.

(25) is a vessel of the condenser (22), (26) is a vessel of the water separator (23), and both are formed of stainless steel;
They are integrated by welding one to the other.
(27) is an overflow pipe provided in the condenser (22), and an overflow portion (27a) thereof is arranged above the water separator (23). The volume of the condenser (22) is 50
And the volume up to the overflow level is 40. Therefore, 40
The liquefied solvent that has passed through the overflow pipe (27)
From b) it is introduced into the water separator (23). (28) is a communication pipe which communicates the bottom of the condenser (22) with the washing tank (2), and is opened and closed by a valve F (29). (3
0) is a float switch for detecting the lower limit liquid level of the liquefied solvent stored in the condenser (22), and (31) is a float switch for detecting the upper limit (overflow) liquid level. The detection signal of (31) is input to a microcomputer described later. (32) is a drain valve for manually discharging the liquefied solvent in the condenser (22).

As is well known, a solvent recovery cylinder (33) and a solvent recovery pipe (34) are erected in the water separator (23), and the separated solvent sinking downward due to a difference in specific gravity is transferred to the tank (1). return. (35) is a drain valve in the water separator (23), (36)
Is a manual drain valve, and (37) is an inlet pipe for introducing a liquefied solvent from a drying mechanism described later.

In FIG. 1, reference numeral (38) denotes a drying mechanism for circulating drying air in the cleaning tank (2) during the drying step, and includes a blower (39), a cooler for cooling (40), and a heater. It consists of a heater (41). That is, the wind after heat exchange with the laundry is cooled and dehumidified by the cooler (40), heated again by the heater (41), and introduced into the washing tank (2). Then, the liquefied solvent generated at the time of dehumidification is introduced into the water separator (23). (42) is a lint filter.

Thus, the dry cleaner sequentially executes a program including the steps of cleaning, rinsing, draining, and drying.

In the tank (1), soap is supplied by a soap supply device (not shown), and the concentration is always kept constant.

In the cleaning step, a solvent is supplied from the tank (1) through the main liquid supply passage (4) to the cleaning tank (2) up to a set liquid level (about 35 (standard (high liquid level)). The so-called tap washing is performed by reversing the drum (3). The cleaning method includes batch cleaning in which liquid is stored in the cleaning tank (2) and then cleaning, and the main liquid supply path (4) and the main liquid discharge path (5).
Washing while circulating water.

When the washing step is completed, a solvent is supplied to the regeneration path (19). In the regeneration path (19), the solvent gas from the distiller (21) is liquefied in the condenser (22) and stored in the condenser (22). At this time, the amount of cleaning liquid (35
) Is smaller than the storage capacity (about 40) of the condenser (22), and is stored in the condenser (22) without overflowing from the overflow pipe (27) to the water separator (23). Then, the specific gravity is separated.

The rinsing step is similar to the washing step. However, since the liquefied solvent is already stored in the condenser (22), a new liquefied solvent is supplied from the overflow pipe (27) to the water separator (23), and has a high purity. The solvent is collected in the tank (1).

In addition, when the clothing is specially processed, when the clothing is swollen, or when the clothing is of a white system, it is necessary to rinse with a high-purity solvent not containing soap. The separation solvent stored in the vessel (22) is supplied to the washing tank (2) through the communication pipe (28).

FIG. 3 shows a display unit on the operation surface of the dry cleaner according to the present embodiment. Reference numeral (43) denotes a time display unit, which displays a set time before operation and a remaining time during operation. (44) is a temperature display section, which displays a set temperature before operation and a measured temperature during operation.

FIG. 4 shows a group of operation keys on the operation surface.
5) is a program key, and after operating this key, one of ten fixed programs can be designated by operating the ten keys (46) of 0-9. Each fixed program is
Corresponding to program Nos. 11 to 20, for example, by operating program key (45) +11,
11 fixed programs can be specified, and the program can be started by operating the start / pause key (47). (48)
(51) are program start keys, and four programs (A, B, C,
In response to D), the program can be started immediately simply by performing a selection operation. In each of the fixed programs, No.
11 and the program A, No12 and the program B, No13 and the program C, and No14 and the program D are associated with each other so as to have the same contents or similar contents (slightly different process times, etc.). (52) is an automatic call key, which is used to change the process contents of the specified program.
By operating this key after the process content is changed, it is possible to shift to the next process. (53) is a process time change key. For example, when it is desired to change the drying time, the automatic call key (52) is operated to designate a drying process, and the time key (5
Enter the change time using the numeric keypad after operating 3). This change time is displayed on the time display section (43), for example, 10 minutes 30 minutes.
Seconds are displayed as 10:30. (54) is a temperature setting key for setting an exhaust gas temperature during the drying process, and the set temperature is displayed on the temperature display section (44). (55) is a liquid level setting key which can set three levels (low, medium, and high) including the lower limit liquid level (low liquid level). (56) is a re-supply key, which will be described later, which is operated when replenishment of the cleaning liquid is desired.

In FIG. 5, (57) is a microcomputer (for example, μPD7810HCW manufactured by NEC Corporation) which is the center of control.
Type, hereinafter referred to as a microcomputer), and includes various registers (58), an arithmetic unit (59), a ROM (Read Only Memory) (60), a working RAM (Random Access Memory) (61), and the like. (62) is a RAM external to the microcomputer (57)
The memory contents are backed up by the battery (63).

FIG. 6 shows a control mechanism of a dry cleaner centered on the microcomputer (57). The microcomputer (57) includes an input key circuit (64) composed of the various operation keys, and the float switch (30). (31) Based on information from the reed switches (16) and (17), an exhaust temperature detection circuit (65), various abnormality detection switch groups (66) for detecting an abnormal state, etc., the various valves and pumps , And controls operations of a load (67) of a motor, a fan, and the like and a display device (68).

In FIG. 5, the program data of the programs No. 11 to No. 14 is stored in the ROM (60),
M (62) stores the program data of the programs A to D.

FIG. 7 shows an address relationship of each storage device. An address 0000H to an address 6999H is an area of the ROM (60), and a basic dry machine operation control program is stored in the address 0000H to 5999H, At addresses 6000H to 6999H,
The program data of the programs No11 to No14 is stored. Addresses 7000H to 7999H are areas of the working RAM (61). To the working RAM (61), a program specified from the ROM (60) or the RAM (62) is transferred. A data area is prepared at ~ 7099H, and a program area is prepared at addresses 7100H ~ 7999H. After the address 8000H, the RAM (62)
Area, the data of the programs A to D are stored.

FIG. 8 shows a specific data storage format of the program A stored in the RAM (62). That is, program start data is stored at address 8000H,
8043H stores program execution data, address 8044H stores exclusive OR data, and address 8045H stores program end data.

Although not shown, the ROM (60) also stores data of programs No. 15 to No. 20, and the RAM (62) is used to write programs created by the user as programs No. 5 to No. 10. Five blank data areas are prepared.

The operation based on such a configuration will be described with reference to FIGS. 9 to 12. In the following description, it is assumed that the program A is specified.

In FIG. 9, when the program A is designated, the microcomputer (57) reads the program start data at the address 8000H and judges whether or not the data is 55H (S-).
1) (S-2) If it is not 55H, it is determined that the program is abnormal. If it is 55H, then the exclusive OR of the data at addresses 8001H to 8043H is calculated (S-3). Specifically, in FIG. 8, first, the exclusive OR of the data at addresses 8001H and 8002H is calculated, and the result is added to the address 8003H.
, And sequentially calculate up to the address 8043H.

The exclusive OR data stored at the address 8044H is a value when the addresses 8001H to 8043H are normal. Next, the main (57) calculates the exclusive OR data with the data calculated in (S-3) and the address. Compare with the data of 8044H (S-
4) If they do not match, it is determined that the program is abnormal, and if they do match, the program end data at address 8045H is read (S-5). Then, it is determined whether or not the data is AAH (S-6). If it is not AAH, it is determined that the program is abnormal. If it is AAH, the content of program A is determined to be normal. The process is transferred to (61), and the cleaning process is sequentially performed.

In the above description, if it is determined that the program is abnormal in (S-2), (S-4) or (S-6), the program A is canceled and the control shown in FIG. 10 is performed.

That is, since the program A is associated with the program A as the program having the same content or the closest approximation, the program A is first stored at the address 8000H in the area where the program A is stored in the RAM (62). The start data 55H is written (S-10).
Write the data of program No. 11 to 1H to 8043H (S
-11), calculate the exclusive OR of the addresses 8001H to 8043H (S-12), write the result of this operation as exclusive OR data in the address 8044H (S-13), and finally write the program end data AAH in the address. Write to 8045H (S-1
4) At the end of the transfer, the program No. 11 is transferred to the working RAM (61), and the cleaning process is sequentially performed.

Therefore, thereafter, when the program A is designated, the contents of the program No. 11 are substantially executed. 9 and 10 when programs B, C, and D are specified.
The same control as shown in the figure is performed.
The contents of the corresponding program Nos. 12, 13 and 14 are transferred instead.

Next, the operation of supplying liquid from the tank (1) to the cleaning tank (2) will be described with reference to FIG.

The microcomputer (57) sets the initial value of the counter to 1 (S-20), determines the set liquid level, and sets the identification value A to 1 if the liquid level is low and the identification value A if the liquid level is medium. Is set to 2 and if the liquid level is high, the discrimination value A is set to 3 (S-21) (S-22)
(S-23), the liquid supply is started (S-24). Then, since the low liquid level can be detected by the reed switch (16), if the low liquid level is set, the liquid supply is immediately terminated (S-25). Also, in the case of the medium liquid level setting, the liquid supply is terminated 10 seconds after the low liquid level,
After 2 seconds, the liquid supply ends.

The dry cleaner of this embodiment has an auxiliary liquid supply function in addition to the liquid supply operation.

That is, if the re-supply key (56) is operated during the cleaning step or the rinsing step, the liquid supply operation is performed for 10 seconds. During this time, the process operations may be interrupted or performed in parallel.

By using this auxiliary liquid supply function, a fine liquid supply operation can be performed. That is, when the liquid is to be supplied to the high liquid level, the liquid is supplied to the low liquid level for the time being, and then the liquid resupply key (56) is operated to supply the liquid to the high liquid level. By doing so, for example, when the solvent in the tank (1) has a volume equivalent to the low liquid level, in the normal liquid supply operation, the pump (6) can be changed from the low liquid level to the high liquid level for a maximum of 20 seconds. Will continue to inhale air, but can be stopped in up to 10 seconds by using the auxiliary liquid supply function.

When the upper limit liquid level is detected during the liquid supply operation and the auxiliary liquid supply operation, the liquid supply is immediately terminated.

Finally, the operation of the drying step will be described with reference to FIG.

In the present embodiment, during the drying step, the temperature of the exhaust gas from the cleaning tank (2) is detected based on the input from the exhaust gas temperature detection circuit (65). The exhaust temperature detection circuit (65)
As shown in FIG. 6, the voltage divided by the resistor (69) and the negative characteristic thermistor (70) is input to the microcomputer (57) through the A / D converter (71). The negative characteristic thermistor (70)
Is provided at the exhaust outlet of the cleaning tank (2), and the higher the exhaust temperature, the lower the resistance value of the thermistor (70). Therefore, a signal of a low value is input to the microcomputer (57).

On the other hand, the microcomputer (57) operates the temperature setting key (5
It has a reference value corresponding to the temperature set in 4), and detects that the set temperature has been reached when the input from the exhaust gas temperature setting circuit (65) matches the reference value.

The temperature setting key (54) can set (or change) the exhaust temperature of 30 ° C. to 50 ° C., but normally, it is automatically set to 45 ° C. when a program is set.

In FIG. 12, the microcomputer (57) executes the drying operation until the exhaust temperature reaches the set temperature and the drying time has elapsed.

In the present embodiment, drying is performed at least until the exhaust gas temperature reaches the set temperature to obtain the minimum drying effect, but the set temperature may be the temperature at the heater outlet. The temperature difference between the heater outlet and the exhaust may be used.

(G) Effects of the Invention In the drying apparatus of the present invention, the minimum drying effect can be ensured even if the drying time is incorrectly set, and therefore, the drying apparatus has high commercial value.

[Brief description of the drawings]

FIG. 1 is a piping diagram of a dry cleaner according to the present invention,
FIG. 2 is a sectional view of a condenser and a water separator, FIG. 3 is a front view of a display unit, FIG. 4 is a front view of an operation key group, FIG. 5 is a schematic configuration diagram of a microcomputer and a storage device, FIG. FIG. 7 is a block circuit diagram of a control mechanism, FIG. 7 is an address relation diagram in each storage device, FIG. 8 is an explanatory diagram showing a program data storage format in a RAM, and FIG. 9 is a flowchart showing a program data inspection operation. FIG. 10 is a flowchart showing a data transfer operation when a program is abnormal, FIG. 11 is a flowchart showing a liquid supply operation, and FIG. 12 is a flowchart showing a drying operation. (54) ... exhaust temperature setting key, (57) ... microcomputer (control means).

Claims (1)

(57) [Claims] 1. A control device for controlling an operation of a drying mechanism based on a set drying time and a set drying temperature for an arbitrary time, wherein the control device controls the operation of the drying mechanism in accordance with the start of the drying process. In starting the measurement of the drying time and terminating the drying operation in response to the measured time reaching the set drying time, the control unit controls the drying temperature obtained during the execution of the drying step to be the drying temperature. A drying apparatus characterized in that the drying operation is continued until the set drying temperature is reached, irrespective of whether or not the measured time has reached the set drying time.