JP3108299B2 - Dry cleaners and clothes dryers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry cleaner for washing clothes in a single rotary drum using a petroleum solvent and performing various steps such as removing the solvent from the clothes and drying the clothes. The present invention relates to a clothes dryer for drying clothes washed with a cleaner or a petroleum-based solvent.

[0002]

2. Description of the Related Art In a conventional dry cleaner, since a flammable solvent is used as a cleaning agent, the temperature of the cleaning agent supplied to the drum and the temperature of the drying air are respectively set to a heater and a heater in consideration of safety and cleaning properties. It is known to use a cooler for safe management (for example, JP-A-63-177896 and JP-A-62-176498).
Reference).

[0003]

However, conventional dry cleaners (or clothes dryers) generally have a steam source (boiler) installed outside the dry cleaner.
In addition, since steam and cold water are supplied to the heater and cooler from the chilled water source (chiller) to operate the heater and the cooler, the steam source and the chilled water source are not operated, or are connected to the dry cleaner properly. If not, the heater and the cooler do not operate properly, hindering the operation, and in addition, there is a risk that the flammable solvent may overheat during the operation and catch fire or explode. The present invention has been made in view of such circumstances, and a dry cleaner and clothing that perform preparatory operation before driving to determine whether a steam source and a cold water source operate normally. A dryer is provided.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a cleaning means for supplying a solvent to a drum for accommodating clothing to wash the clothing, supplying dry air to the drum, and supplying dry air discharged to the drum again. Circulating air blowing means, heating means for heating the drying air supplied to the drum, cooling means for cooling the drying air discharged from the drum, and controlling the washing, blowing, heating and cooling means, Operating means for operating the washing and drying steps, a first sensor for detecting the temperature of the drying air heated by the heating means, a second sensor for detecting the temperature of the drying air cooled by the cooling means, and the operating means Before starting the cleaning step, a preparatory operating means for driving the air blowing, heating and cooling means, a comparing means for comparing the detected values of the first and second sensors with first and second set values, respectively, At least one but is intended to provide a dry cleaner, characterized in that it comprises a display means for displaying it when not reach the set values.

[0005] In the present invention, the washing means for supplying a solvent to a drum for accommodating the clothes to wash the clothes means that the drum is installed rotatably so that the axis is substantially horizontal, and the drum is １ ／ of the drum diameter. This is a means for supplying a solvent as a cleaning agent to a depth of about, rotating and reversing (reversing) the drum for several seconds at a rotation speed of 30 to 50 rpm, and slapping and washing the clothes. Therefore, the cleaning means preferably includes a solvent tank, and a pipe and a pump for circulating the solvent between the solvent tank and the drum.

[0006] The solvent used as a detergent in the present invention is mainly a flammable petroleum solvent, for example, industrial gasoline No. 5. The higher the temperature of the solvent used in the cleaning step, the higher the cleaning ability. However, since the solvent is flammable, the solvent temperature is kept below the flash point (43 ° C. in the case of gasoline No. 5) and vaporized. The gas concentration of the solvent is set to the lower explosive limit concentration (for gasoline No. 5, 0.1
6 vol%) or less.

[0007] Further, the circulating air supply means for supplying the drying air to the drum and supplying the discharged drying air to the drum again is designed in consideration of the solvent gas concentration in the drum and the drying efficiency.
A means for adjusting the temperature of hot air or hot air to a safe and appropriate temperature range and circulating and supplying it to the inside of the drum. Can be configured.

[0008] The heating means for heating the drying air supplied to the drum may be a heater capable of receiving the heating medium (steam) from the heating medium supply means (steam boiler) and heating the drying air to about 50 to 100 ° C. Although preferred, an electric heater or a gas heater may be used. The cooling unit that cools the drying air discharged from the drum is preferably a cooler that can cool the drying air by receiving the cold water from the cooling medium supply unit (chiller), but is not limited thereto.

The operating means for controlling the washing, blowing, heating and cooling means to operate a series of washing and drying steps is an electric control device for executing the steps in accordance with a preset program. CPU, ROM, RAM
And a microcomputer comprising an I / O port.

In general, between the washing step and the drying step, after the solvent is discharged from the drum, a liquid removing step is performed in which the drum is rotated at a high speed to remove the liquid.

A thermistor or a thermocouple can be used for the first and second sensors. Before the operating means starts the cleaning step, the preparatory operating means for driving the blowing, heating and cooling means and the comparing means for comparing the detection values of the first and second sensors with the first and second set values, respectively. , A CPU, a ROM, a RAM, and an I / O port, which may be included in the driving means. When at least one of the detected values does not reach each set value, a CRT, a liquid crystal display, an LED display, or the like can be used as a display means for displaying the set value.

Here, the first set value is a temperature at which it can be determined that the heating means is clearly operating, for example, 70 ° C., and the second set value is a temperature at which the cooling manual is clearly operated. It is a temperature at which it can be determined that there is, for example, 12 ° C.
Note that the first and second set values are mainly determined by the environmental temperature.

Further, the present invention provides a circulation type air supply means for supplying dry air to a drum for accommodating clothes and supplying the discharged dry air to the drum again, and a heating means for heating the dry air supplied to the drum. Means, cooling means for cooling the drying air discharged from the drum, controlling the blowing, heating and cooling means, operating means for operating a series of drying steps, and controlling the temperature of the drying air heated by the heating means. A first sensor for detecting, a second sensor for detecting the temperature of the drying air cooled by the cooling means, and a preparatory operating means for driving the blowing, heating and cooling means before the operating means starts the drying step; Comparing means for comparing the detected values of the first and second sensors with the first and second set values, respectively, and display means for displaying when at least one of the detected values does not reach each set value It is possible to provide a clothes dryer which is characterized and.

[0014]

In the dry cleaner and the clothes dryer according to the present invention, the preparatory operation means drives the air blowing, heating and cooling means before the operation means starts a series of steps, and the comparison means comprises the first and second means. The detected value of the sensor is compared with the first and second set values, respectively, and the display means displays when at least one of the detected values does not reach each set value. In other words, if at least one of the heating and cooling means is malfunctioning, the user can know from the display before starting operation.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments shown in the drawings. This does not limit the present invention. FIG. 1 is an external perspective view of a dry cleaner using a petroleum-based solvent (a combined use of a clothes washer and a dryer). 100 is a dry cleaner main body, 101 is a door that opens and closes a clothes inlet, 102 is a door handle, 103 is a door frame, 104 is a door glass, 105 is a front panel, PS is a power switch, 34 is a keyboard, and 35 is a display panel.

FIG. 2 is an explanatory view of the structure of the dry cleaner shown in FIG. 1, wherein 1 is a drum for accommodating clothes, and 2 is an outer tub. The drum 1 is formed in a cylindrical shape having a large number of holes opened in the peripheral wall, and is rotatably supported in the outer tank 2. In the outer tank 2, a circulation path 3 for air and a vaporized solvent and a drain pipe 4 for a solvent liquid are provided outside a cylindrical portion covering the outer periphery of the drum 1.

In the circulation path 3, the drum outlet temperature sensor SE ₄ , blower 5, exhaust port 6, cooler 7, cooler outlet temperature sensor SE ₅ , intake valve 8, heater 9, drum inlet temperature sensor SE ₆ are arranged in this order. The temperature sensors SE _{4 to} SE ₆
Is composed of a thermistor.

Further, in the bottom of the outer tub 2, to detect that the solvent drain pipe line 4 by interposing the liquid level sensor SE ₁ and the drum 1 for detecting the solvent level in the drum 1 is discharged button trap 10 having a liquid level sensor SE ₇ is connected. Note that the button trap 10 is
It is a kind of filter for removing solid matter such as buttons for clothes contained in the solvent discharged from.

After introducing the cooling water supplied from the cooling water source W, the cooler 7 returns the cooling water to the cooling water source W, thereby cooling the air flowing through the circulation path 3 and the vaporized solvent, and cooling the solvent. It is designed to condense and liquefy. The liquefied solvent, after water is removed through the water separator 13,
It is returned to the solvent tank 11.

The intake valve 8 is configured to be opened and closed by an air cylinder 8a. Normally, the intake valve 8 is closed as shown in FIG. When the blower 5 is driven by opening the intake valve 8, external air is taken into the drum 1 and discharged from the exhaust port 6.

By opening the valves 24 and 27, the heater 9 introduces steam of about 100 to 120 ° C. from the steam source S, and heats the air flowing through the circulation path 3. The cooling water source (chiller) W and the steam source (boiler) S are usually installed outside the dry cleaner.

The liquid supply port of the solvent tank 11 and the liquid discharge port of the button trap 10 are connected to the suction port side of the pump P via a liquid supply valve 21 and a liquid discharge valve 22, respectively. Also,
The discharge port side of the pump P is connected to the heat exchanger 12 via a filter F.

The heat exchanger 12 is provided with a pipe 12a through which steam or cooling water selectively flows in a solvent flow passage. The solvent outlet of the heat exchanger 12 is connected to a three-way switching valve 23. Is selectively connected to the solvent tank 11 or the drum 1.

In the heat exchanger 12, the valves 24, 25,
By opening the valve 28 and closing the valves 26 and 29, steam flows into the line 12a, and the valves 25 and 28
Is closed and the valves 26 and 29 are opened to allow the cooling water to flow through the pipe 12a, so that heating and cooling of the solvent can be selectively performed.

SE ₂ is a temperature sensor provided at the solvent inlet of the heat exchanger 12 and composed of a thermistor, and detects the temperature of the solvent. SE ₃ is a superheat sensor configured thermostatically to detect overheating of the solvent provided the heat exchanger 12.

SW is a pressure switch provided on the discharge port side of the pump P for detecting the flow rate of the solvent. When supplying the solvent to the drum 1, the solvent outlet of the heat exchanger 12 is connected to the three-way switching valve 2.
3 connects to the drum 1 and opens the valve 21 to drive the pump P.

When the solvent is discharged from the drum 1, the solvent outlet of the heat exchanger 12 is connected to the solvent tank 11 by a three-way switching valve 23, the valve 22 is opened, the valve 21 is closed, and the pump P is driven. . Thus, the solvent discharged from the drum 1 is stored in the solvent tank 11 after being purified by the button trap 10 and the filter F.

When the solvent is not supplied to the drum 1, the solvent outlet of the heat exchanger 12 is connected to the solvent tank 11 by a three-way switching valve 23, the valve 22 is closed, the valve 21 is opened, and the pump P is driven. Then, since the solvent circulates between the solvent tank 11, the filter F, and the heat exchanger 12, the solvent can be purified and the temperature can be controlled.

FIG. 3 shows the drum 1, the outer tub 2, and the circulation path 3.
FIG. 3 is a cross-sectional view of a main part showing an arrangement relationship of the first embodiment. A rotating shaft 107 of the drum 1 is rotatably supported by a bearing 108 provided on the outer tub 2, and is controlled by an inverter through pulleys 109 and 110 and a pulley belt 111. Variable speed)
It is connected to the motor M.

When the door 101 is closed, one end (outlet) of the circulation path 3 is connected to the clothes input port of the drum 1, and the other end (inlet) is connected to the peripheral wall of the outer tub 2. Accordingly, when the motor M is driven and the drum 1 rotates, the drum 1 acts like a centrifugal fan (for example, a sirocco fan), and even when the blower 5 is stopped, the drying air flows as indicated by the arrow in FIG. Circulate. 106 is the door 10
1 is a rubber packing for sealing 1.

FIG. 4 is a block diagram of a control system. Reference numeral 31 denotes a control unit, that is, a microcomputer, and the microcomputer 31 includes a CPU, a ROM, and a RAM.

The microcomputer 31 includes a keyboard 34 and a display panel 3 via input / output ports 32 and 33.
5, the drum drive motor M, the pump P, a blower 5, the intake valves 8, each valve 21-29, the liquid level sensor SE _1, SE _7, the temperature sensor SE _2, superheat sensor SE _3, the temperature sensor SE
_{4 to} SE ₆ and connected to the pressure switch SW to drive and control these and to take in the detected values therefrom.

FIG. 5 is a detailed view of the keyboard 34. When the keyboard 34 operates the program key 41 and subsequently designates a program number with the ten keys 44, the keyboard 34 operates among a plurality of operation programs stored in the microcomputer 31. Is called, and the setting data of each step in the program is displayed on the display panel 35.

In this state, when each step of the operation program is sequentially specified by operating the call key 43, a new operation can be performed in each of the specified steps, and a new operation program can be registered. Reference numeral 42 denotes a start / stop key for starting / stopping the operation of the dry cleaner.

On the display panel 35, the solvent temperature during the cleaning process, the temperature of the cooler 7 during the drying process, the cool down time,
Each timing of the drum inversion cycle, etc., the method of circulating the solvent, the method of draining the liquid, the method of supplying the drum at high, medium, and low rotational speeds, and the details of each stroke setting at the time of automatic or manual operation correspond to the LED. It is displayed by lighting or the like.

Next, the entire stroke of the dry cleaner having such a configuration will be schematically described. As shown in FIG. 6, first, in the preparatory operation step (step S100), when the power switch 4 is turned on, the heater 9
From the cooling water source W to the cooler 7
And the blower 5 is driven to operate the heater 9 and the cooler 7 to determine the operation state of the temperature sensors SE ₆ and S ₆ .
It determined based on the temperature detected by the E _5. And the heater 9
And a display panel 3 indicating whether the cooler 7 is operating normally (operable) or not operating (operable).
5 is displayed.

When the operation is possible, the solvent is supplied to the drum 1 and the drum 1 is intermittently driven at a low speed (30 to 50 rpm) in the cleaning step (step S200).
To perform forward and reverse rotation (reversal) to perform tap washing for a predetermined washing time. In this cleaning step, the temperature in the drum is adjusted to an appropriate value before the cleaning liquid (solvent) is supplied to the drum 1.

When the washing step is completed, the solvent is discharged from the drum 1 in a liquid removing step (step S300).
Thereafter, the drum 1 is rotated forward at a high speed (600 to 700 rpm) to drain the liquid, and when a predetermined drain time has elapsed, the drum 1 is stopped to end the draining process. In this dewatering process, the heater 9 was operated while the drum 1 was rotating at a high speed,
Hot air is supplied to the drum 1 using low-speed circulating air generated by high-speed rotation of the drum 1 to preheat the drum 1.

After the end of the liquid removal step, the drying step (S400)
, The drum 1 is intermittently rotated forward and backward at a low speed, and the blower 5, the cooler 7 and the heater 9 are driven,
Dry air is supplied to the drum 1. After a lapse of a predetermined time, the operation of the heater 9 is stopped, cool air is supplied to the drum 1 (cool down), and then the process proceeds to the next deodorization step (S500). In the course of this drying cycle, the locally overheat the solvent, an operation check of the superheat sensor (thermostat) SE _3.

In the deodorizing step, the intake valve 8 is opened, the external air is supplied to the inverting drum 1, and after a predetermined time, the intake valve 8 is closed, the rotation of the drum 1 is stopped, and the deodorizing step is completed. This completes the entire operation of the dry cleaner.

Next, detailed operations in the main steps of the above steps will be described with reference to flowcharts. (1) Preparation Operation Step FIG. 7 is a flowchart showing the preparation operation step. FIG.
When the power switch PS of the main body 100 is turned on, the blower 5 is operated, the intake valve 8 is closed, the valves 24 and 27 are opened, and steam flows from the steam source S to the heater 9, so that the preparatory operation is performed. (Step S10)
1 to S104). As for the cooler 7, if the cooling water source W is operating normally, the cooling water always circulates through the cooling water pipe, and the cooling water is supplied to the cooler 7.

Then, at the same time as starting the preparatory operation,
Step S105), temperature sensor SE ₆And temperature sensors
SE_FiveStarts the temperature measurement. Temperature sensor SE₆Is 70 ° C
If the above is detected continuously for 10 seconds (step S10
6) It can be determined that the steam source S is operating normally.
So, as heater preparation OK, close valve 24 and valve 27
The check of the operation state of the steam source S is completed (step
Steps S107 to S109). In addition, the temperature sensor SE_FiveIs 1
If the temperature below 2 ° C is detected for 2 minutes, the cooling water source W is normal
It is determined that the cooler is ready.
(Steps S110 and S111).

When both of the above two conditions are satisfied, the blower 5 is stopped, the preparatory operation is completed, the operation is put into a standby state, and the contents are displayed on the display panel 35.
(Steps S112 to S114). However, if either one of the above two conditions cannot be cleared, the preparatory operation is performed until 25 minutes elapse after the power is turned on. If the condition cannot be cleared even after 25 minutes have elapsed, it is determined that the steam source S or the cooling water source W is not operating normally, and the preparatory operation is terminated. The display prompts the user to check the operation state of the steam source or the cooling water source W (steps S114 to S118).

As described above, in the dry cleaner, after confirming that the operation of the steam source S and the chilled water source W is normal in the preparatory operation, the normal operation is started, so that the steam source S or the chilled water source W is started. It is possible to prevent an operation interruption accident or a solvent ignition / explosion accident due to a malfunction of the device.

(2) Cleaning Step FIG. 8 is a flowchart showing the cleaning step. In FIG. 8, when a start / stop key 42 (FIG. 5) is pressed, a temperature sensor SE for detecting the temperature in the drum 1 is detected.
₄ starts temperature measurement (step S201). When the temperature sensor SE ₄ detects 50 ° C. or higher (step S 202), the blower 5 is operated to cool the drum 1 and the outer tub 2 (step S 203), and the detected temperature of the temperature sensor SE ₄ becomes lower than 40 ° C. Then, the blower 5 is stopped (steps S204, S205).

Next, the drum 1 is intermittently rotated forward and backward at a low speed (reversed), and at the same time, a solvent is supplied from the tank 11 to the drum 1. When the solvent in the drum 1 reaches a predetermined liquid level,
The liquid supply from the tank 11 to the drum 1 is stopped (Steps S206 to S209). Next, the solvent (cleaning agent) of the drum 1 is circulated through the button trap 10, the pump P, the filter F, the heat exchanger 12, and the drum 1 (step S2).
10) If the solvent temperature is 27 ° C. or higher, the cooler 7 is operated, and if the solvent temperature is lower than 27 ° C., the operation of the cooler 7 is stopped (steps S210 to S213), so that the temperature of the cleaning liquid is maintained at 27 ° C. or lower. Temperature control is performed.

Next, the drum 1 in step S206
7 minutes have passed since the start of the reversal of (Step S
214), the solvent circulation operation is stopped, and the reversing operation of the drum 1 is stopped to end the cleaning process (step S2).
15, S216). Also, in step S202,
The temperature detected by the temperature sensor SE ₄ (drum outlet temperature) is 50
If the temperature is lower than 30 ° C. and lower than 30 ° C. (step S217),
The routine proceeds to step S206.

[0048] Further, in step S202, S217, if the detected temperature is lower than 30 ° C. the temperature sensor SE _4, to start the inversion operation to the drum 1, supplying the solvent from the tank 11 to the drum 1, the drum 1 of When the solvent reaches the predetermined liquid level, the supply of the liquid from the tank 11 to the drum 1 is stopped (steps S218 to S220).

Next, the cleaning agent of the drum 1 is circulated to the button trap 10, the pump P, the filter F, the heat exchanger 12, and the drum 1 (step S221), and the temperature of the cleaning agent is lower than 23 ° C. If the heater 9 is activated,
When the temperature reaches 23 ° C. or higher, the operation of the heater 9 is stopped (steps S222 to S224), thereby performing temperature control for maintaining the temperature of the cleaning liquid at 23 ° C. or lower. Then, when seven minutes have elapsed from the start of the reversal of the drum 1 in step S218, the cleaning process ends (step S2).
15, S216).

According to the cleaning process of this embodiment, at the start of the cleaning process, the temperature inside the drum is set to an appropriate temperature range in advance, so that the danger of ignition or explosion of the solvent can be avoided and the cleaning can be performed efficiently. It can be performed.

Further, since the solvent temperature can be estimated from the value of the temperature in the drum before the start of the cleaning process, the heating or cooling means necessary for controlling the solvent temperature in accordance with the temperature in the drum, ie, The solvent heater or the solvent cooler can be selected in advance, and the temperature control of the solvent during the cleaning process can be easily controlled.

(3) Drying Process FIGS. 9 and 10 are flowcharts showing the drying process. When the liquid removal step is completed, as shown in FIG. 9, the pump P is operated (step S401), and the solvent is circulated to the solvent tank 11, the filter F, the heat exchanger 12, and the solvent tank 11, and the solvent is circulated. The temperature management for maintaining the temperature at about 25 ° C. is started (step S402).

At the same time, the blower 5 and the heater 9 are operated to supply hot air to the drum 1 (step S403,
S404), 3 minutes within the drum inlet temperature, i.e., when the temperature detected by the temperature sensor SE ₆ does not rise above 50 ° C. stops the operation determines that the malfunction of the steam source S (step S405~S407 ). If the drum inlet temperature rises to 50 ° C. or higher within three minutes, the operation of the steam source S is determined to be normal, and low-temperature drying is performed for a predetermined low-temperature drying time (steps S408 and S409).

Here, the low-temperature drying means that the temperature in the drum 1 is reduced to a safe temperature (0.6 vol%) while the drum is inverted, until the concentration of the solvent vaporized in the drum 1 falls below the safe value (0.6 vol%). Drying is performed by supplying hot air to the drum 1 while controlling the temperature at the drum entrance to 50 ° C. in order to maintain the temperature at 40 ° C. or lower.

Next, high-temperature drying is performed (S410). The high-temperature drying means that when the concentration of the solvent vaporized in the drum 1 falls below a safe value, the drum 1 is turned over and hot air of a higher temperature (about 70 to 100 ° C.) is blown for a predetermined high-temperature drying time. It is to supply the toner to the drum 1 and perform drying efficiently.

Here, if the overheat temperature sensor (thermostat) SE ₃ is in a reset (non-operating) state and the number of operations so far (counted by the counter function of the microcomputer 31) is 50 or more. if, as described later, an operation check is conducted overheat temperature sensor (thermostat) SE ₃ in accordance with the flowchart shown in FIG. 10 (step S410a, S411, S412).
When the predetermined high-temperature drying time has elapsed, the high-temperature drying is terminated (steps S413 and S414), the operation of the heater 9 is stopped, and cool air from the cooler 7 is supplied to the drum 1 for a predetermined cooling-down time. 1 is cooled, and the drying process ends (step S415).

Steps S410a and S411
In the case or if the operating frequency is overheating temperature sensor SE ₃ is in operation is less than 50 times, the routine proceeds to step S413, ends the drying cycle without performing the operation check of the superheat temperature sensor SE ₃ Yes (entrusted to the next operation).

Next, according to FIG.
The operation check of ₃ will be described. In the operation check, first, the count of the number of operations counted in step S411 of FIG. 9 is reset, the pump P is stopped, and the temperature control of the solvent (solvent circulating operation) is stopped (step S411).
416-S419).

Then, the valves 24, 25 and 28 are opened and steam is supplied to the heat exchanger 12 for only 10 seconds.
The solvent in 2 is overheated (step S420), and it is determined whether or not the overheat temperature sensor SE ₃ (thermostat) operates (step S421). If it does not operate even after one minute has passed (step S422), steam is supplied to the heat exchanger 12 for another 5 seconds, and the superheat temperature sensor SE
The operation of step ₃ is determined (steps S423 and S424).

[0060] After the start of the test, if no work after two minutes (step S425), and further supplied for 5 seconds steam to the heat exchanger 12, to determine the operation of the overheat temperature sensor SE ₃ (step S426, S427). If it does not work after 3 minutes from the start of the test (step S
428), it determines that the superheat sensor SE ₃ abnormality,
This is displayed on the display panel 35. On the other hand, step S
421, when in S424 or S427 is sensor SE ₃ was operated normally, it determines that the superheat sensor is normal (step S431), and ends the operation test (step S430). Then, the pump P is continuously operated to circulate the solvent, and the temperature of the solvent is controlled by the heat exchanger 12 (steps S431 and S432).

[0061] Operation check overheat temperature sensor (thermostat) SE ₃ of this embodiment, step S40 in FIG. 9
As shown in 3 to S405, this is performed after confirming in advance that the steam source S is normal during low-temperature drying, so that the valves 24, 25, and 2 to be supplied to the steam heat exchanger 12 are used.
8 is operated for a predetermined time, that is, the solvent in the heat exchanger 12 is overheated. Thus, the operation check of the superheat temperature sensor SE ₃ can be performed without error.

This operation check is performed in step S4.
As shown in FIG. 11, the predetermined number of dry cleaner operations (5
0), and it is not necessary to heat the solvent each time the operation is performed, so that the temperature of the solvent can be easily controlled.

Further, this operation check is performed after the pump P is stopped, as shown in step S418, so that only the solvent contained in the heat exchanger 12 is heated, and other pipes and the solvent tank 11 are removed. The solvent is not heated. Therefore, after the operation check, the temperature of the entire solvent can be promptly returned to the original temperature.

[0064]

According to the present invention, whether or not the means for heating and cooling the drying air is operable is displayed to the user before starting the operation, so that the user can safely operate based on the display. I can deal with it. In particular, when the heating and cooling means are supplied from the heating medium and the cooling medium supply means, respectively, it is possible to know the quality of the heating medium and the cooling medium supply means, including the heating and cooling means and the supply path therebetween. .

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating the configuration of an embodiment.

FIG. 3 is a sectional view of a main part of the embodiment.

FIG. 4 is a block diagram of a control system of the embodiment.

FIG. 5 is a front view showing the keyboard of the embodiment.

FIG. 6 is a schematic flowchart showing a process of the embodiment.

FIG. 7 is a flowchart of a preparation operation process of the embodiment.

FIG. 8 is a flowchart of a cleaning process according to the embodiment.

FIG. 9 is a flowchart of a drying process according to the embodiment.

FIG. 10 is a flowchart showing a main part of a drying process according to the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Drum 2 Outer tank 3 Circulation path 4 Drain pipe line 5 Blower 6 Exhaust port 7 Cooler 8 Intake valve 9 Heater 11 Solvent tank 12 Heat exchanger 13 Water separator 21-29 Valve SE ₁ Liquid level sensor SE ₂ Temperature sensor SE ₃ superheat sensor SE ₄ temperature sensor SE ₅ temperature sensor SE ₆ temperature sensor SE ₇ liquid level sensor SW pressure switch S steam source W cooling water source F filter

Continuation of front page (56) References JP-A-5-345096 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/28 D06F 43/08

Claims (4)

(57) [Claims] 1. A cleaning means for supplying a solvent to a drum for accommodating clothing to wash the clothing, and supplying a drying air to the drum,
Circulating air blowing means for supplying the discharged drying air to the drum again; heating means for heating the drying air supplied to the drum; cooling means for cooling the drying air discharged from the drum; Operating means for controlling the heating and cooling means to operate a series of washing and drying steps, a first sensor for detecting the temperature of the drying air heated by the heating means, and the temperature of the drying air cooled by the cooling means A second sensor for detecting the pressure, a preparatory operation means for driving the air blowing, heating and cooling means before the operation means starts the cleaning step, and a first and second setting for the detection values of the first and second sensors, respectively. A dry cleaner comprising: comparison means for comparing a value with a value; and display means for displaying when at least one of the detected values does not reach each set value. 2. The dry cleaner according to claim 1, wherein the heating means is means for heating the drying air by a heat medium supplied from the heat medium supply means. 3. The dry cleaner according to claim 1, wherein the cooling means is means for cooling the drying air by a refrigerant supplied from the refrigerant supply means. 4. A circulating air supply means for supplying a drying air to a drum for storing clothes and supplying the discharged drying air to the drum again, a heating means for heating the drying air supplied to the drum, and a drum. A cooling unit that cools the drying air discharged from the unit, an operating unit that controls the blowing, heating, and cooling units to operate a series of drying processes, and a first unit that detects a temperature of the drying air heated by the heating unit. A sensor, a second sensor for detecting the temperature of the drying air cooled by the cooling means, a preparatory operating means for driving the blowing, heating and cooling means before the operating means starts the drying step, a first and a second A comparison means for comparing the detected values of the two sensors with the first and second set values, respectively, and a display means for displaying when at least one of the detected values does not reach each set value. Clothing Dryer.