JP2002119797A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by simplifying the structure of a solvent cooler for controlling the temperature of the solvent. SOLUTION: The solvent cooler 28 having a pipe for allowing solvent to flow is provided between a drying heater 11 for heating air to be fed to an outer tank 1 during the drying step and a drying cooler 15 for condensing solvent gas. The solvent stored in a solvent tank 20 is sucked by a pump 21 in the drying step, and returned to the solvent tank 20 via a filter 23, a solvent heater 24 and the solvent cooler 28. Since air cooled by the drying cooler 15 strikes the solvent cooler 28 to cool the solvent, the solvent temperature can be controlled to be in the vicinity of a predetermined value (about 25 deg.C) by controlling a second steam valve VS2 while monitoring the solvent temperature by a solvent temperature sensor 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a washing and drying machine,
In particular, the present invention relates to a washing / drying machine suitable for a dry cleaner that performs washing and drying using a petroleum solvent or the like.

[0002]

2. Description of the Related Art As a dry cleaner for washing using a petroleum-based solvent or the like, a washing and drying machine called a hot dry machine for performing a series of steps from washing to drying in the same equipment is known. As an example of the configuration of this type of dry cleaner, a solvent circulation path is provided with an inlet at the bottom of an outer tank having a rotating drum inside and an outlet at the top, and a pump and a filter installed in the circulation path. are doing. During the washing process, the solvent is circulated in the circulation flow path including the outer tank by the pump operation to purify the solvent with a filter, so that the solvent can be continuously used without being discharged outside the machine.

[0003]

In general, a petroleum-based solvent provides the highest cleaning performance when the solvent temperature is around 25 ° C., and the cleaning performance deteriorates when the liquid temperature is higher or lower. I do. In addition, petroleum solvents have high flammability, and there is a problem in terms of safety when the liquid temperature rises. In the above configuration, the temperature of the solvent changes due to heat conduction from the surrounding environment, and the temperature rises due to heat conduction from the pump and frictional heat when passing through the flow path while the solvent is circulated. .

Therefore, in a conventional dry cleaner, a refrigerant-type cooler and a steam-heating type heater are provided in the circulation path of the solvent, and the temperature of the solvent is detected at a predetermined temperature (25 ° C.) while the temperature of the solvent is detected by a solvent temperature sensor. (In the vicinity) is controlled. On the other hand, in this type of dry cleaner, a circulation ventilation path including a drum is provided for drying the laundry, and a heater for heating air and a cooler for condensing and recovering the solvent are provided in the ventilation path. It has.

In a conventional dry cleaner, a heater and a cooler for heating and cooling the air for drying the laundry, and a heater and a cooler for heating and cooling the solvent are independently provided. This contributed to increasing costs. In particular, a cooler for drying laundry requires a much larger cooling capacity than a cooler for cooling a solvent, so that it is not possible to adopt a configuration in which refrigerant is supplied to both coolers from the same refrigerator. Therefore, it is necessary to provide a refrigerator in correspondence with the above, which has been a major factor of cost increase.

The present invention has been made in view of the above points, and one of the objects is to realize a structure for cooling a solvent at a very low cost as compared with the related art. It is to provide a washing and drying machine.

Further, as described above, petroleum-based solvents have high flammability, so that various safety measures are required to prevent accidents such as ignition during the washing process and the drying process. The present invention has been made in view of such a point, and one of the objects thereof is to provide a washing and drying machine which is effective for preventing accidents such as ignition before and more reliably than before. To provide.

Further, in addition to the above-mentioned problems, the washing and drying machine using such a solvent requires different considerations from those of the washing and drying machine using water. For example, if water is mixed in the solvent, the laundry may be damaged. The present invention has been made in consideration of such points.

[0009]

Means for Solving the Problems, Embodiments of the Invention, and Effects According to a first aspect of the present invention, there is provided a washing / drying machine for washing using a volatile solvent. An outer tub that is a dryer and also serves as a laundry room and a drying room,
An air passage having an inlet and an outlet connected to the outer tub to form a circulating air passage including the outer tub, a blowing means for circulating air through the circulating air passage, and a solvent installed in the air passage In a washing / drying machine including a cooler for condensation and a heater for air heating installed downstream of the cooler in the ventilation path, piping of a solvent flow path including a solvent storage tank containing a solvent is provided. Is provided in a ventilation path between the cooler and the heater to form a solvent cooler.

For example, when the laundry is dried, the cooler and the heater are operated, and the air is circulated in the circulation air passage by the blowing means. Then, cold air before heating by the heater flows. The solvent flowing in the pipe in the solvent cooler is cooled by the heat taken by the surroundings by the cold air. That is, the solvent cooler functions as an air-cooling type cooling unit using the cool air generated by the cooler for condensing the solvent. Therefore, according to this configuration, there is no need to provide an external cooler for cooling the solvent as in the related art. Also, only one chiller is required for the cooler for condensing the solvent.

In the washing and drying machine according to the first aspect of the present invention, a solvent heater for heating the solvent and temperature detecting means for detecting the temperature of the solvent are provided in the solvent channel, and the solvent channel is provided in the solvent channel. And when the blowing means, the cooler and the heater are operated, by controlling the heating means on the basis of the temperature detected by the temperature detecting means, the temperature of the solvent may be maintained near a predetermined temperature. it can.

According to this configuration, the solvent heater is controlled separately from the capacity and control of the cooler and the heater, so that
The temperature of the solvent can be controlled. In particular, when the capacity of the cooler and the heater is determined or controlled so as to be optimal for drying the laundry, the cooling capacity of the solvent cooler is determined by these. The temperature of the solvent can be controlled regardless of the cooling capacity of the solvent. Further, even when the temperature of the solvent is too low due to the influence of the surrounding environment or the like, the temperature of the solvent can be controlled by using the solvent heater.

Further, the temperature control of the solvent as described above can be performed at any time as long as the heater, the cooler and the air blowing means are operated. It is efficient to control the temperature of the solvent during the period. That is, it is preferable that the solvent flow path is a circulation flow path including a solvent storage tank, and the temperature of the solvent is controlled by flowing the solvent through the circulation flow path during the drying process of the laundry.

A washing and drying machine according to a second aspect of the present invention for solving the above-mentioned problem is a washing and drying machine which performs washing using a volatile solvent, and is an outer tub serving also as a washing room and a drying room. And a solvent supply flow path for supplying the solvent from the solvent storage tank to the outer tank, a solvent discharge flow path for collecting the solvent discharged from the outer tank to the solvent storage tank, and a solvent purifying means from the solvent storage tank. A washing / drying machine having a solvent flow path for switching a solvent circulation flow path for circulating a solvent in a solvent storage tank, a) a soap concentration detecting means provided in the solvent circulation flow path, b ) Soap input means for inputting the soap into the solvent, c) immediately after the start of the washing operation, the soap concentration in the solvent is detected by the soap concentration detecting means, and if the detected value is equal to or more than a predetermined value, the operation is started. On the other hand, if the detection value is less than the predetermined value The solvent is circulated in the solvent circulation flow path for a predetermined time, and thereafter, the soap concentration in the solvent is detected again by the soap concentration detecting means, and if the detected value is equal to or more than a predetermined value, the operation is started, If the detected value is less than a predetermined value, the control unit is characterized by comprising: operation control means for causing the soap input means to input soap into the solvent.

In this configuration, immediately after the start of the cleaning operation, the soap concentration in the solvent is detected by the soap concentration detecting means under the control of the control means.
First, the circulation operation of the solvent is performed. This ensures that the solvent reaches the soap concentration detecting means and eliminates the problem of soap concentration detection due to the absence of the solvent in the soap concentration detecting means. Then, if the detected soap concentration is less than the predetermined value again after the state where the soap concentration can be reliably detected, it is determined that the soap in the solvent is insufficient, and the soap input operation is performed. Thus, when the soap is introduced into the solvent, the concentration of the soap in the solvent increases. Since the soap has an antistatic effect, if the operation is performed at a predetermined soap concentration, it is possible to suppress static electricity generated due to friction between the laundry or the friction between the laundry and the inner wall of the drum, and to ignite the solvent. Accident can be prevented beforehand.

In this case, there is no problem if the soap is sufficiently supplied (or stored), but the supply or storage of the soap is not sufficiently performed, and even if the soap input operation is performed, the soap concentration is reduced. It is possible that it will not rise. Therefore, in the washing / drying machine according to the second invention, the operation control means detects the soap concentration in the solvent again by the soap concentration detecting means after performing the soap input operation, and the detected value is equal to or more than a predetermined value. Then, the operation may be started, and if the detected value is less than the predetermined value, the operation may be stopped. According to this configuration, when the soap concentration is insufficient, the operation is not started, so that it is possible to more reliably prevent accidents such as ignition of the solvent.

Furthermore, if the operation control means is configured to notify the abnormality when the operation is stopped, if the soap concentration is still insufficient even after executing the soap input operation, the operator is notified of the abnormality. Is notified, the operator can quickly take appropriate measures such as checking the supply state and remaining amount of the soap.

Further, when the soap concentration does not increase in spite of the introduction of the soap as described above, there may be a problem that the soap concentration detecting means itself does not operate normally. Therefore, a washing and drying machine according to a third aspect of the present invention provides an outer tub that also serves as a washing room and a drying room, supplies a solvent from the solvent storage tub to the outer tub, and collects the solvent discharged from the outer tub into the solvent storage tub. A) a soap concentration detecting means provided in the solvent flow path, and b) an upstream of the soap concentration detecting means in the solvent flow path. Provided on the side, and a soap throwing means for throwing soap into the solvent, c) immediately after the soap throwing operation by the soap throwing means,
Control means for determining the degree of increase in the soap concentration detected by the soap concentration detecting means.

If the soap is sufficiently supplied or stored, the solvent containing a large amount of the soap should arrive immediately after the soap charging operation. There is a possibility that the density detecting means does not operate normally or the soap is worn. Therefore, the control means can detect the abnormal state by judging the degree of increase in the soap concentration.

If the soap concentration detecting means is out of order, the soap concentration in the solvent will be excessive if the soap concentration is repeatedly input, so that the control means has a low degree of increase in the soap concentration. In this case, it is preferable to adopt a configuration in which the subsequent soap input operation is prohibited.

Further, the control means may be configured to continue the operation when the degree of increase in the soap concentration is low, and to issue an abnormality notification at the latest at the end of the operation. According to this configuration, even if the above-described abnormality is detected, the operation can be completed to the end, but the abnormality is notified by the time the operation is completed. The amount and the like can be confirmed, and if there is no problem, it can be regarded as a defect of the soap concentration detecting means, and appropriate measures such as requesting repair can be promptly taken.

According to a fourth aspect of the present invention, there is provided a washing / drying machine for solving the above-mentioned problems. The washing / drying machine stores laundry in a drum rotatably disposed inside an outer tub which also serves as a washing room and a drying room. In the washing and drying machine that sequentially executes washing, dewatering and drying, a) an eccentric load detecting means for detecting an eccentric load caused by uneven distribution of the laundry at the time of dewatering, and b) an eccentric load detected according to the detected eccentric amount. It is characterized by comprising: a liquid removal operation control means for determining a liquid removal rotation speed; and c) a drying operation control means for determining a drying time in accordance with the detected eccentricity.

As the eccentric load at the time of liquid removal is larger, it is necessary to reduce the liquid removal rotation speed in order to suppress vibration and noise. Since the liquid removal rotation speed affects the liquid removal rate, the larger the eccentric load, the worse the liquid removal rate at the end of the liquid removal process, and the greater the amount of the cleaning solvent remaining in the laundry. According to the above configuration, when the liquid removal rotation speed is low, a longer drying time is set. Therefore, even when the residual amount of the solvent is large, the residual solvent is volatilized reliably during the drying operation, and the washing is performed. Can be removed from the object.

The washing and drying machine according to the fourth aspect of the present invention is a washing and drying machine for performing washing using a volatile solvent, wherein an inlet ventilation path connected to the outer tub, A connected outlet air passage, hot air supply means for supplying hot air to the outer tank through the inlet air passage and extracting air passing through the outer tank from the outlet air passage, and detecting an air temperature on the inlet side of the outer tank. Further comprising an inlet temperature detecting means for detecting the air temperature on the outlet side of the outer tub and an outlet temperature detecting means for detecting a temperature of the air on the outlet side of the outer tub, wherein the drying operation control means maintains a difference between the inlet temperature and the outlet temperature close to a predetermined temperature difference. The temperature difference may be determined according to the amount of eccentricity detected by the eccentric load detecting means by controlling the hot air supply means so as to perform the control.

According to this configuration, the temperature difference between the inlet temperature and the outlet temperature during the drying operation is set to be smaller as the rotation speed of the liquid removal is lower, so that the temperature in the drum is relatively suppressed. Therefore, the evaporation rate of the solvent from the laundry is suppressed, and the solvent gas content of the air in the drum can be suppressed to a certain range. Thereby, even if the amount of residual solvent in the laundry is large, accidents such as ignition can be prevented beforehand and reliably.

A washing and drying machine according to a fifth aspect of the present invention for solving the above-mentioned problem is a washing and drying machine for washing using a volatile solvent, which is rotatably disposed inside an outer tub. In a washing and drying machine that stores laundry in a set drum and sequentially executes washing, draining, and drying, a) a motor that rotationally drives the drum, and b) washing in the drum at the beginning of the draining operation. First rotation control means for controlling the motor so as to rotate the drum at a rotation speed at which a solvent contained in the object is removed to a certain degree; c) after the control by the first rotation control means, uneven distribution in the drum And second rotation control means for rotating the motor so as to rotate the drum so that the laundry is dispersed.

That is, when centrifugal dewatering is performed as in the washing and drying machine according to the present invention, the uneven distribution of the laundry around the rotation axis in the drum is minimized before rotating the drum at high speed. It is desirable to keep. Therefore, in the washing and drying machine according to the fifth aspect of the present invention, under the control of the second rotation control means, for example, near the rotation speed at which the centrifugal force acting on the laundry in the drum and the gravity are balanced. By changing the speed, the hardened laundry is separated and dispersed. At this time, if the laundry has a strong sticking force, the laundry moves in a hardened state, and as a result, the laundry is not dispersed. According to the above configuration, before the control by the second rotation control means, the first
Under the control of the rotation control means, the drum is rotated at a certain high speed to discharge the solvent from the laundry. When a solvent is used, the surface of the wet laundry that has been discharged to some extent from the laundry has a high lubricity. Therefore, the sticking of the laundry is weak, and the laundry is easily separated and dispersed.

As a result, the probability that the eccentric load due to the uneven distribution of the laundry becomes small increases, and the vibration and the noise at the time of liquid removal can be suppressed. Further, if the eccentric load is small, the liquid removal rotation speed can be set as high as described above, so that the liquid removal rate is improved and the drying time is advantageously shortened.

A washing and drying machine according to a sixth aspect of the present invention for solving the above-mentioned problem is a washing and drying machine which performs washing using a volatile solvent, and is an outer tub serving also as a washing room and a drying room. And an air passage having an inlet and an outlet connected to the outer tub to form a circulation air passage including the outer tub, a blowing means for circulating air through the circulation air passage, and A condenser for condensing the solvent, and a heater for heating air installed downstream of the cooler in the ventilation path, wherein the heater includes a steam pipe through which steam flows, and the pipe A washing / drying machine that heats the air by heat exchange with the surrounding air, a) a water collecting tank provided at a predetermined location between the heater and the outer tub in the ventilation path, b. ) Water detection means for detecting that water has accumulated in the water collection tank; c) the water detection means It is characterized by comprising an abnormality informing means for informing the abnormality by receiving an outgoing signal.

According to this configuration, when steam leaks from the steam pipe of the heater, water condensed and liquefied from the steam is collected and stored in the water collecting tank. This is detected by the water detection means and is notified by the abnormality notification means. Accordingly, this allows the operator to recognize the abnormality and quickly take appropriate measures such as checking the steam pipe of the heater or requesting repair. Further, it is also possible to prevent the washing from being repeatedly performed in a state where water is mixed in the solvent.

Further, a washing and drying machine according to a seventh aspect of the present invention, which has been made to solve the above-mentioned problem, forms an outer tub that also serves as a washing room and a drying room, and forms a circulation air path including the outer tub. A washing / drying machine having an air passage having an inlet and an outlet connected to the outer tub, air blowing means for circulating air through the circulation air passage, and a heater for heating air provided in the air passage. An elastic member for providing a communication port for communicating with the outside in the ventilation path, detachably providing a lid for closing the communication port, and keeping the airtightness with the back surface of the lid at the peripheral edge of the communication port. The elastic member is characterized by having an inner projection projecting obliquely upward toward the inside of the communication port and an outer projection projecting obliquely upward toward the outside of the communication port.

In this configuration, the elastic member has an inner protruding portion and an outer protruding portion having a substantially V-shaped cross section, and the back surface of the lid is pressed against the tips of the protruding portions. According to this, when the inside of the communication port has a positive pressure with respect to the outside, a force acts to press the inside protrusion from the inside to the outside, and the inside protrusion closely adheres to the lid back surface, and high airtightness is obtained. Achieved. Conversely, when the inside of the communication port has a negative pressure with respect to the outside, a force acts to press the outside protrusion from the outside to the inside, and the outside protrusion adheres more strongly to the back surface of the lid, and high airtightness is achieved. You. In any case, since the high airtightness is maintained by the elastic member, for example, the number of fixing points for pressing the lid against the communication port can be reduced. Further, since the peripheral edge of the communication port is not exposed when the lid is removed, it is also effective in preventing injury to workers and maintenance personnel. Further, it is not necessary to finish the peripheral edge of the communication port smoothly in order to prevent such injuries, which is also useful for reducing processing costs.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a dry cleaner as an embodiment of a washing and drying machine according to the present invention will be described with reference to the drawings. FIG.
FIG. 2 is a configuration diagram of a main part of the present dry cleaner centered on a piping path. First, the mechanical configuration of the present dry cleaner will be described with reference to FIG.

A cylindrical drum 2 having a large number of holes around it is rotatably supported in the outer tub 1, and the wall of the outer tub 1 has an inlet-side air passage 3 a and an outlet-side air passage 3 b. , And a drain line 4 for the solvent. Inlet side ventilation path 3
a, the outer tub 1, the outlet side ventilation path 3b, and the upper ventilation path 3c form a circulating air path, and the air flows through the circulating air path by the suction force of the fan 5 driven to rotate by the blower motor 6. A gate valve 7 that can open and close the ventilation path is provided between the upper ventilation path 3c and the inlet-side ventilation path 3a, and an intake port that has an intake valve 9 that can be opened and closed immediately downstream of the gate valve 7. 8 are arranged. An exhaust port 10 is provided between the outlet side ventilation path 3b and the upper ventilation path 3c.

In this configuration, when the fan 5 is rotated in a state where the intake valve 9 is opened and the gate valve 7 is closed, the air flowing in from the intake port 8 causes the inlet side ventilation passage 3a, the outer tank 1, and the outlet. The air is discharged from the exhaust port 10 to the outside through the side ventilation path 3b (this air path is referred to as an “exhaust method”). When the fan 5 is rotated in a state where the intake valve 9 and the gate valve 7 are both opened, the air flowing from the intake port 8 passes through the inlet side ventilation path 3a, the outer tank 1, and the outlet side ventilation path 3b, Part of the air is exhausted to the outside through the exhaust port 10 and the rest is
The air circulates to the inlet-side ventilation path 3a via c (this air path is referred to as “circulation exhaust method”). Furthermore, when the fan 5 is rotated with the intake valve 9 closed and the gate valve 7 opened, the inlet-side air passage 3a, the outer tub 1, and the outlet-side air passage 3
b, air circulates through the upper ventilation path 3c (this air path is referred to as "sealed exhaust system").

A drying heater 11 of a steam heating type is provided in the inlet side ventilation path 3a, and a drum inlet temperature sensor 12 and a drum inlet overheating prevention sensor 13 are provided downstream of the drying heater 11. In the pipe of the drying heater 11, a high temperature (usually 100
〜120 ° C.) is supplied via a first steam valve VS1, and this steam is returned to the boiler 30 via a third steam valve VS3. As a result, the air passing through the inlet-side ventilation path 3 a is heated by the drying heater 11 and is sent into the outer tank 1. Further, a drum outlet temperature sensor 14 is provided in the outlet side ventilation path 3b, and detects the temperature of the air passing through the inside of the drum 2.

On the other hand, a water-cooled drying cooler 15 is provided in the upper ventilation path 3c, and a cooler temperature sensor 16 is provided downstream of the drying cooler 15. Dry cooler 1
In the pipe of No. 5, cold water cooled by a chiller 31 installed outside the machine is circulated and supplied. When the air sent from the outlet side ventilation path 3b side is rapidly cooled by the drying cooler 15, the solvent gas contained in the air is condensed, liquefied and dropped. The liquefied solvent flows out of the drain port 17 and reaches the water separator 18 where water is removed and only the solvent is collected in the solvent tank 20.

The drainage line 4 connected to the bottom of the outer tank 1 is
Connected to a button trap 19 having a standard liquid level sensor 19a for detecting that the solvent in the drum 2 is at a predetermined liquid level, and a drain liquid level sensor 19b for detecting that the solvent in the outer tank 1 has been discharged. Have been. The button trap 19
This is a kind of filter for removing solid matter such as buttons on clothes mixed into the discharged solvent. Solvent tank 2
0 liquid supply port 20a and drain port 19 of button trap 19
c is connected to the suction port of the pump 21 via a liquid supply valve VL1 and a liquid discharge valve VL2, respectively. This pump 21
Is connected to either the inlet or the outlet of the filter 23 by a first three-way switching valve VL3 via a check valve 22. The filter 23 includes a paper filter, an activated carbon filter, and the like, and removes impurities such as fine dust mixed in the solvent.

The outlet of the filter 23 is connected to a solvent heater 24. The solvent heater 24 has a configuration in which a high-temperature steam pipe line 24a is provided in a solvent flow path, and the high-temperature steam is controlled by a second steam valve VS2. A liquid temperature sensor 25 and a liquid temperature overheating prevention sensor 26 are provided on the downstream side of the solvent heater 24, and a soap concentration sensor 27 is further provided downstream thereof. The downstream flow path is connected to a solvent cooler 28 disposed in the upper ventilation path 3 c and between the drying cooler 15 and the drying heater 11. The solvent cooler 28 circulates the solvent through the pipe, and cools the solvent by heat exchange with cooled air flowing around the pipe. In other words, the solvent cooler 28 itself does not use refrigerant or cold water for cooling,
This is a kind of air-cooled cooler that uses air cooled by the drying cooler 15. The outlet of the solvent cooler 28 is connected to the outer tank 1 or the solvent tank 20 by a second three-way switching valve VL4.
Connected to either Further, a soap storage tank 29 is connected to the suction port of the pump 21 via a soap supply valve VL5.

When the solvent is supplied into the outer tank 1 in the solvent circulation path configured as described above, the drain valve V
L2 is closed, the liquid supply valve VL1 is opened, the outlet of the solvent cooler 28 is connected to the outer tank 1 by the second three-way switching valve VL4, and the discharge port side of the pump 21 is connected to the first three-way switching valve VL3.
The filter 21 is connected to the inlet of the filter 23 to drive the pump 21. Then, the solvent stored in the solvent tank 20 is supplied to the liquid supply valve VL1, the pump 21, and the first three-way switching valve VL.
3, filter 23, solvent heater 24, solvent cooler 28,
It is supplied into the outer tank 1 via the second three-way switching valve VL4 (hereinafter, this is referred to as “solvent supply path”).

On the other hand, when discharging the solvent stored in the outer tank 1, the drain valve VL2 is opened, the liquid supply valve VL1 is closed, and the discharge port side of the pump 21 is filtered by the first three-way switching valve VL3. The pump 21 is connected to the inlet of the solvent cooler 28 and the outlet of the solvent cooler 28 is connected to the solvent tank 20 by the second three-way switching valve VL4. Then, the solvent is discharged from the outer tank 1 to the drain line 4, the button trap 19,
The liquid returns to the solvent tank 20 via the drain valve VL2, the pump 21, the first three-way switching valve VL3, the filter 23, the solvent heater 24, the solvent cooler 28, and the second three-way switching valve VL4 (hereinafter, referred to as "the solvent tank 20").
This is referred to as a “solvent discharge path”). In this case, the solvent can be purified by the filter 23 in the process of collecting the solvent in the solvent tank 20.

When the solvent is not supplied to the outer tank 1, the supply valve VL1 is opened, the drain valve VL2 is closed, and the discharge port of the pump 21 is connected to the inlet of the filter 23 by the first three-way switching valve VL3. And the outlet of the solvent cooler 28 is connected to the solvent tank 20 by the second three-way switching valve VL4, and the pump 21 is driven. Then, the solvent is supplied from the solvent tank 20 through the liquid supply valve VL1, the pump 21, the first three-way switching valve VL3, the filter 23, the solvent heater 24, the solvent cooler 28, and the second three-way switching valve VL4.
(Hereinafter referred to as “solvent purification temperature control route”)
). Therefore, the solvent can be purified by the filter 23 in the course of circulation.

When the solvent is circulated in this manner, the drying heater 11 and the drying cooler 15 are operated, the blower motor 6 is driven, and the fan 5 generates an airflow in the circulation air passage. The cooler 28 can function as cooling means. That is, the drying cooler 15
The air flow cooled in step (1) comes into contact with the solvent pipe of the solvent cooler 28 to remove heat. As a result, the temperature of the solvent is lower at the outlet side of the solvent cooler 28 than at the inlet side. If the temperature of the solvent is lower than the target temperature (eg, about 25 ° C.), the second
Open the steam valve VS2 to supply steam to the solvent heater 24,
What is necessary is just to heat a solvent moderately. In this way, it is possible to manage so that the temperature of the solvent is maintained near the target temperature. As described above, unlike the conventional solvent cooler, the solvent cooler 28 does not itself require cold water or a refrigerant. In addition, since a solvent pipe formed into a spiral or other shape in order to improve the efficiency of heat exchange only needs to be installed in the circulation air path, the structure of the solvent cooler 28 itself is very simple. It will be.

FIG. 2 is a configuration diagram of an electric system of the present dry cleaner. The control unit 40 is configured by a microcomputer or the like, and includes, in addition to the CPU, a ROM in which an operation control program is stored, a RAM for reading and writing data necessary for operation and the like. The control unit 40 includes an operation unit 42 having a key input switch and the like, a display unit 43 having a display panel for numerical values and the like, and the above-described drum inlet temperature sensor 12, drum outlet temperature sensor 14, cooler temperature sensor 16 , A liquid temperature sensor 25, a standard liquid level sensor 19a, a drain liquid level sensor 19b, a soap concentration sensor 27, and a water detection sensor 45 described later.

The control unit 40 receives a detection signal from each of the above sensors, outputs a control signal to the load driving unit 41 according to an operation control program, and outputs the drum motor 2a, the blower motor 6, the pump 21, Valve 9, gate valve 7, supply valve VL1, drain valve VL2, first three-way switching valve V
L3, the second three-way switching valve VL4, the soap supply valve VL5, and the first to third steam valves VS1 to VS3 are respectively driven. Note that a thermistor is used as a temperature sensor connected to the control unit 40.

The sensor 13 for preventing overheating of the drum inlet and the sensor 26 for preventing overheating of the liquid temperature are also thermistors, but are connected not to the control unit 40 but to an operation detecting circuit 44 for detecting a resistance change by each sensor in hardware. The load drive unit 41 is controlled according to the output of the operation detection circuit 44. Thus, even when the control unit 40 is not operating normally, when abnormal overheating is detected by the drum inlet overheating prevention sensor 13 and the liquid temperature overheating prevention sensor 26, the heating by the drying heater 11 and the solvent heater 24 is stopped. I can do it. Conventionally, a thermostat has been used as a sensor to prevent such abnormal overheating, and the detection delay of abnormal overheating and the instability of operation have been problems.However, with this dry cleaner, thermistor is also used to detect abnormal overheating. , So that such a problem can be solved.

Next, the entire washing process of the dry cleaner having the above configuration will be schematically described with reference to the flowchart of FIG.

(1) Washing Step (Step S1) When the start key of the operation section 42 is operated by the operator to instruct the start of the operation, the control section 40 controls the drum motor 2
a to drive the drum 2 intermittently at a low speed (30 to 50 rpm).
m) rotate forward and reverse (reverse). At the same time,
The solvent supply path described above is formed, and the solvent is supplied from the solvent tank 20 until a predetermined amount of the solvent is accumulated in the outer tank 1.

When the standard liquid level sensor 19a detects that the liquid level has reached the predetermined level, the liquid supply valve VL1 is closed and the drain valve VL2 is opened. As a result, the solvent stored in the outer tank 1 is discharged to the drain pipe 4, the drain valve VL2, the pump 2
1, circulating through the first three-way switching valve VL3, the filter 23, the solvent heater 24, the solvent cooler 28, and the second three-way switching valve VL4 into the outer tank 1. Therefore, at the time of the tap washing by the reverse rotation of the drum 2, the solvent is circulated and supplied as described above, the solid matter coming out of the laundry is collected by the button trap 19, and the solvent is further purified by the filter 23. In addition,
During the washing operation, a soap is introduced so as to have an appropriate soap concentration in order to improve the washing performance and to prevent electrification as described later. The soap supply operation can be achieved by opening the soap supply valve VL5 while the pump 21 is operating.

(2) Dewatering Step (Step S2) When a predetermined cleaning operation time (for example, 7 minutes) has elapsed, the solvent discharge path is formed as described above, and the solvent stored in the outer tank 1 is removed. Collected in tank 20. Then, when the drainage liquid level sensor 19b detects that the drainage is completed, the drum 2 is then driven at a high speed (400 to 600 rpm).
m) to rotate forward. At this time, the draining operation as described above is continuously performed, and the solvent discharged from the laundry is transferred to the solvent tank 2.
Return to 0. Then, when a predetermined drainage operation time has elapsed, the drum 2 is stopped and the drainage process is terminated.

(3) Drying Step (Step S3) After the liquid removing step is completed, the process proceeds to the drying step. In the drying process, the control unit 40 intermittently rotates the drum 2 forward and backward at a low speed, and drives the blower motor 6, the drying cooler 15, and the drying heater 11. At this time, the intake valve 9 is appropriately opened and closed, and the gate valve 7 is opened. Thereby, the dried hot air is supplied to the outer tub 1, and much of the air containing the solvent gas volatilized from the laundry passing through the ventilation holes of the drum 2 is circulated to the drying cooler 15. Since the solvent gas is cooled and condensed and liquefied by the drying cooler 15, the drying air from which the solvent has been removed returns to the drying heater 11, is reheated, and circulates to the outer tank 1.

In this drying process, the solvent concentration in the circulating air is maintained at a safe value (for example, 0.6 vol% when the solvent is gasoline No. 5) in order to reliably prevent accidents such as ignition. The following temperature management is performed. That is, the solvent gas concentration in the drum 2 is determined by the hot air temperature detected by the drum entrance temperature sensor 12 and the air after the temperature is reduced by evaporating the solvent from the laundry, detected by the drum exit temperature sensor 14. Depends on the difference from the temperature. Therefore, if the steam supplied to the drying heater 11 is controlled so as to maintain this temperature difference at or below the predetermined temperature difference, specifically, if the opening and closing of the first and third steam valves VS1 and VS3 are controlled, Drying can be performed while maintaining the solvent gas concentration in the drum 2 at a safe value or less.

While the above-described drying operation is being performed, the above-mentioned solvent purifying temperature control path is formed to purify the solvent and to control the temperature so that the temperature of the solvent becomes about 25 ° C. Be executed. If such temperature control is not performed, the temperature of the solvent usually becomes higher than 25 ° C. mainly due to heat conduction from the pump 21, and the temperature rise accumulates especially when washing is repeated. By controlling the temperature of the solvent during the process, the temperature of the solvent can be maintained at around 25 ° C.

(4) Deodorization Step (Step S4) After the above-mentioned drying is performed for a predetermined drying operation time, the first and third steam valves VS1, VS3 are inverted while the drum 2 is inverted.
Is closed, the operation of the drying heater 11 is stopped, and the air cooled by the drying cooler 15 is supplied to the outer tub 1 to perform the cool down. Further, after the cooling down is performed appropriately, the intake valve 9 is completely opened, fresh air is supplied from the outside to the outer tub 1 to remove the solvent odor remaining in the laundry, and then the drum 2 is rotated. Is stopped and the entire washing process is completed.

Next, the characteristic operation of the dry cleaner of this embodiment in the washing process will be described in detail.

During the above cleaning process, the soap concentration sensor 2
At 7, the soap concentration in the solvent is detected, and the soap is mixed so that the soap concentration becomes, for example, about 0.3%. The soap has an effect of not only improving the cleaning performance but also preventing static electricity, so that when the laundry is stirred in the drum 2, the laundry is washed with each other or between the laundry and the drum 2.
Static electricity generated by friction with the inner wall can be removed. However, even when the soap concentration of the solvent is not 0%, if there is no solvent in the soap concentration sensor 27, the soap concentration is determined to be 0%, and accurate soap concentration measurement cannot be performed. Such a state in which no solvent is present in the soap concentration sensor 27 occurs, for example, when the operation is forcibly stopped during the liquid removal operation and the operation is subsequently restarted.

Therefore, in this dry cleaner, immediately after the start key is operated, the soap concentration management control as shown in the flowchart of FIG. 4 is executed. That is, when the start key is operated (including resumption of operation) (step S10), the drum motor 2a is operated as described above.
Then, the pump 21 is driven (step S11). Thereafter, the soap concentration is detected by the soap concentration sensor 27 (step S12), and it is determined whether or not the value is 0% (step S13). If the soap concentration is 0%, the tank liquid circulation operation is executed for one minute (step S).
14). For the tank liquid circulation operation, for example, the pump 21 may be operated by forming the solvent purification temperature management path. This ensures that the solvent reaches the soap concentration sensor 27 if there is no problem such as a shortage of the solvent.

Thereafter, the soap concentration is detected again by the soap concentration sensor 27 (step S15).
It is determined whether it is 1% or more (step S16),
If it is 0.1% or more, the operation is started (step S2).
2). If the detected soap concentration is less than 0.1%, the soap supply valve VL5 is opened for a predetermined time and the soap is supplied (step S17). Then, the soap concentration is detected again to determine whether the concentration is 0.1% or more (steps S18 and S19). If the soap concentration is 0.1% or more, the operation is started. If the detected soap concentration is still less than 0.1%, the operation is stopped (step S20), and an error is displayed on the display unit 43 (step S21).

With such a control, the operation is not performed in the state where the soap concentration of the solvent is 0%, so that an accident that the solvent is ignited by static electricity can be prevented.
Further, even though the soap concentration in the solvent is not 0%, since there is no solvent in the soap concentration sensor 27, there is no inconvenience that the operation is not performed due to being erroneously determined to be 0%.

Further, if the soap concentration sensor 27 is out of order, not only the above-described control cannot be performed, but also a problem that the soap is excessively introduced into the solvent may occur. Therefore, in the present dry cleaner, the failure / inconvenience of the soap concentration sensor 27 itself is detected by the control shown in the flowchart of FIG.

When the soap density detected by the soap density sensor 27 is less than the target value (usually 0.3%),
The controller 40 executes a soap input operation. Immediately after the soap input operation, the solvent containing a large amount of the input soap passes through the soap concentration sensor 27, so that the soap concentration temporarily increases. Therefore, immediately after the soap input operation is performed (step S30), an increase in the detection value of the soap concentration sensor 27 is determined (step S31), and it is determined whether the increase is equal to or greater than a predetermined value (step S31). S3
2).

Here, if the increase in the soap concentration is less than the predetermined value (“N” in step S32), if the remaining amount of soap in the soap storage tank 29 is small, and if the soap concentration sensor 27 fails, Can be assumed. If the latter, soap concentration control could not be performed accurately,
Since the washing may be performed at an abnormally high soap concentration, the subsequent soap input operation is prohibited (step S3).
3). Then, the operation is continued until all washing steps are completed (step S34), and an error is displayed on the display unit 43 after the operation is completed (step S35). If the increase width of the soap concentration is equal to or more than the predetermined value in step S32, the normal operation is continued as it is (step S36).

By such control, the washing process itself is completed, and the operator confirms whether or not the soap has been consumed by looking at the error display after the operation is completed. If the soap has not been consumed, it can be determined that there is a high possibility that the soap concentration sensor 27 has failed, so that appropriate measures such as requesting repair can be taken.

Next, a description will be given of a characteristic operation of the present dry cleaner during the liquid removal step. Since the drum 2 is rotated at a high speed during the liquid removal operation, if the laundry in the drum 2 is distributed unbalanced around the rotation axis of the drum 2 and the weight is uneven, the drum 2 rotates eccentrically and abnormally. It causes vibration and abnormal noise. Therefore, in the present dry cleaner, the control as shown in the flowchart of FIG. 6 is performed so that the drum 2 can be shifted to the high-speed rotation operation with the eccentric load caused by the uneven distribution of the laundry as small as possible.

First, when the liquid removal process is started, the drum 2
The rotation speed is increased to about 150 rpm, and the operation is performed for a predetermined time (step S40). The rotation speed at this time is
Although the centrifugal force acting on the laundry in the drum 2 is higher than the rotation speed at which the gravity is substantially balanced with the gravity (hereinafter, referred to as “balanced rotation speed”), the vibration can be tolerated even if the uneven distribution of the laundry is somewhat large. The rotation speed is low enough to be suppressed. Even if the uneven distribution of the laundry in the drum 2 is somewhat large, the rotation speed is low enough to suppress the vibration to an allowable range.
Although the liquid cannot be sufficiently removed at such a rotation speed,
Some of the solvent contained in the laundry comes out of the laundry and scatters outside the drum 2. In other words, such a relatively low rotation speed (compared to the dewatering rotation speed described later) achieves temporary dewatering to squeeze out a certain amount of solvent.

Next, the rotation speed is reduced to such an extent that the drum 2 almost stops (step S41), and the balance adjustment operation is executed from that state (steps S42 to S42).
44). FIG. 8 is a schematic diagram illustrating a state of movement of the laundry during the balance adjustment operation.

In the balance adjustment operation, first, the rotational speed of the drum 2 is set to a value slightly higher than the above-mentioned balanced rotational speed (step S42). At this time, FIG.
As shown in (2), the laundry in the drum 2 is lightly attached to the inner peripheral wall of the drum 2 by centrifugal force and rotates integrally with the drum 2. At a timing when an eccentric load (the eccentric load position in FIG. 8) estimated to have an eccentric load due to the uneven distribution of the laundry comes above the drum 2 (step S43), the short-time drum 2
Rotation speed is reduced below the equilibrium rotation speed (step S
44). As a result, as shown in FIG. 8B, a part of the overlapping laundry (especially, the laundry located on the shaft side of the drum 2) which is a main cause of the eccentric load drops due to gravity, and FIG. As shown in c), the laundry is lightly attached to the inner peripheral wall of the drum 2 again with the laundry being appropriately dispersed, and rotates integrally with the drum 2. Therefore, there is a high possibility that the laundry is appropriately dispersed and the eccentric load is eliminated.

Performing the temporary drainage before performing such a balance adjustment operation has the following advantages. Even if the laundry is dispersedly arranged so that there is almost no eccentric load by the above-mentioned balance adjustment operation, this is a balance in a state where each laundry contains a solvent. Laundry has a large difference in solvent content depending on the type of fabric, weaving, and the like. Accordingly, there is a possibility that the eccentric load increases and the vibration extremely increases. Before performing the balance adjustment operation, reduce the amount of solvent contained in the laundry by temporary drainage,
In other words, when the weight of the laundry is set close to the dry weight of the laundry itself, a change in the weight of each laundry due to liquid removal is reduced, and an increase in the eccentric load can be suppressed. Therefore, there is an advantage that vibration generated at the time of liquid removal and noise accompanying the vibration can be reduced.

Further, as a feature of washing using a petroleum-based solvent, the lubricity of the surface of the laundry becomes high when the solvent is removed. That is, the more the solvent is removed from the laundry by performing the temporary liquid removal, the more the lubricity of the laundry surface is increased, and the more easily each laundry is peeled off. During the balance adjustment operation, even if the rotation speed of the drum 2 is reduced to a level where the centrifugal force acting on the laundry falls below the gravity, if the laundry is strongly attached to each other, the laundry does not fall as expected and the eccentric load is reduced. Does not get smaller. On the other hand, in this dry cleaner, by performing temporary drainage, the sticking between the laundry is reduced, and only the laundry located on the shaft side of the drum 2 can be properly dropped during the balance adjustment operation. Thus, the probability of falling within a desired eccentric load range can be improved.

Returning to the flowchart of FIG. 6, the description will be continued. After performing the balance adjustment operation as described above,
The eccentric load is detected (step S45), and the liquid removal rotation speed is determined according to the magnitude of the eccentric load (eccentric load amount) (step S46). FIG. 7 shows the liquid removal rotation speed with respect to the eccentric load amount at this time. As shown in FIG. 7, when the eccentric load is 1 kg or less, the liquid removal rotation speed is set to the maximum of 60%.
0 rpm, when the eccentric load is in the range of 1 kg to 2 kg, the dewatering rotation speed is 500 rpm, and when the eccentric load is in the range of 2 kg to 3 kg, the dewatering rotation speed is 4 rpm.
When the eccentric load is 3 kg or more, the liquid removal rotation speed is determined to be 400 rpm. Then, the rotation speed of the drum 2 is increased to such a liquid removal rotation speed,
The operation is performed for a predetermined drainage time (step S47).

As a method for detecting the position and magnitude of the eccentric load in steps S43 and S45, for example, the fluctuation amplitude and the fluctuation phase of the drive current of the drum motor a can be used.

The lower the rotation speed of the liquid, the lower the drum 2 and outer tank 1
Because the vibration of the eccentric load becomes small, if the dewatering rotation speed is determined according to the eccentric load amount as described above, the vibration can be prevented from becoming extremely large even when the eccentric load is large. In addition, since the amount of the solvent contained in the laundry is reduced before the balance adjustment operation due to the temporary liquid removal, it is possible to prevent the eccentric load from increasing due to the imbalance in the liquid removal rate in the course of the liquid removal. This can also avoid an increase in vibration.

On the other hand, when the liquid removal rotation speed is low,
The rate of liquid removal is reduced, and the amount of solvent remaining in the laundry during the transition to the drying process is relatively increased. In this case, in addition to the problem that drying is difficult, there is also a problem that the solvent gas concentration in the drum 2 tends to increase during the drying process, and the risk of ignition or the like increases. Therefore, in the present dry cleaner, the following control is performed in the drying process.

That is, as shown in FIG. 7, the liquid removal rotation speed is changed according to the eccentric load amount, and at the same time, the drying time and the temperature difference control value ΔT are also changed. Here, the temperature difference control value ΔT is a target value of the temperature difference when controlling the heating by the drying heater 11 so that the difference between the drum inlet temperature and the drum outlet temperature is constant as described above.

When the liquid removal operation is performed at the highest rotation speed of 600 rpm, the liquid removal rate reaches about 90%, and the solvent remaining in the laundry is small. Therefore, the drying time is set to a minimum of 12 minutes. Also, since the solvent gas concentration of the air in the drum 2 during the drying process becomes relatively low, even if the temperature difference control value ΔT is increased (that is, even if the temperature rise is sharp), the solvent gas concentration is kept below the safe value. It can be suppressed. Therefore, the temperature difference control value ΔT is set to the maximum of 30 ° C. The drying time is extended by 2 minutes each time the liquid removal rotation speed decreases by 100 rpm, so that the solvent remaining in the laundry is volatilized without fail. Further, the temperature difference control value ΔT is sequentially reduced to 25 ° C., 20 ° C., and 15 ° C. as the liquid removal rotation speed decreases.

In the above-described drying process, the first steam valve VS1 and the third steam valve VS1 are controlled so that the difference between the temperature detected by the drum inlet temperature sensor 12 and the temperature detected by the drum outlet temperature sensor 14 becomes the temperature difference control value ΔT. The opening and closing of the steam valve VS3 is controlled.
The drying operation time can be shortened as much as possible while keeping the concentration of the solvent gas in the gas below the lower explosive limit concentration including the peak value.

In the present dry cleaner, since the drying heater 11 using steam is used, if the steam piping is corroded or damaged, steam leaks into the circulation air passage, and water is mixed into the solvent. The laundry may be damaged. Therefore, in the dry cleaner of the present embodiment, the following configuration detects a steam leak.

FIG. 9 is a vertical sectional side view of the outer tank 1 in the present dry cleaner. A water recovery tank 32 is provided below the drying heater 11 in the inlet side ventilation path 3 a, and a water level of the water stored in the water recovery tank 32 is detected by a water detection sensor 45. When steam leaks from the drying heater 11, the steam condenses and enters the inlet side ventilation passage 3a.
Drops adhere to the inner wall of The water runs down the inner wall of the inlet side ventilation path 3 a and accumulates in the water recovery tank 32. When detecting that the water in the water recovery tank 32 has reached a predetermined water level, the water detection sensor 45 gives a detection signal to the control unit 40, and the control unit 40 receives the signal and displays an error on the display unit 43. If the operator confirms the error display, it is possible to recognize that a steam leak has occurred, and to take appropriate measures such as requesting repair. The position where the water recovery tank 32 or the water reservoir corresponding to the water recovery tank 32 is provided may be any position as long as the water where the steam is condensed accumulates.

When steam leakage is suspected as described above, it is necessary to check the steam pipe and the like inside the drying heater 11. Therefore, in order to perform such an inspection, the present dry cleaner is provided with a communication port for inspection at a position where the drying heater 11 can be seen from the outside. FIG. 10 is a schematic sectional view showing the structure of the communication port for inspection.

The inspection communication port 50 is provided in the inlet side air passage 3a at the place where the drying heater 11 is provided, and the end face thereof is formed in a cylindrical opening 51 which is open to the outside. A cover 53 for closing the opening 51 is provided with nuts 5 on bolts 52 protruding outside the communication port 50 for inspection.
4 is a structure to be detachably attached. A rubber packing 55 for maintaining airtightness is attached to a peripheral edge of the opening 51 of the inspection communication port 50. Packing 55
The inner projection 55b orbiting around the opening 51 while projecting obliquely upward toward the inside of the inspection communication port 50, and the opening 51 while projecting obliquely upward toward the outside of the inspection communication port 50. And an outer projection 55a circling around.

The inlet side ventilation path 3a is provided with an intake valve 9 and a gate valve 7
Depending on the open / closed state of the, the pressure can be either a positive pressure in which the pressure increases outside or a negative pressure in which the pressure decreases.
For example, when the inside of the communication hole 50 for inspection has a negative pressure, the outer protrusion 55a is pressed inward from the outside as shown in FIG. Strong air tightness can be maintained due to strong adhesion. Conversely, when the inside of the inspection communication port 50 has a positive pressure, as shown in FIG. 11B, the inside protrusion 55 b is pressed from the inside to the outside, and To maintain high airtightness.

That is, according to the packing 55, high airtightness can be maintained regardless of whether the inside of the inspection communication port 50 is at a positive pressure or a negative pressure. Further, if such a highly airtight packing 55 is used, the number of fixing portions of the cover 53 by the bolts 52 and the nuts 54 can be reduced. Further, since the packing 55 covers the peripheral edge of the opening 51 of the communication port 50 for inspection, it is not necessary to finish the peripheral edge smoothly in order to prevent injury to the operator. Finishing cost can be reduced.

The above embodiment is merely an example, and it is apparent that changes and modifications can be made within the spirit of the present invention.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a main part of a dry cleaner according to an embodiment of the present invention, centering on a piping path;

FIG. 2 is a configuration diagram of an electric system of the dry cleaner according to the embodiment.

FIG. 3 is a flowchart showing the entire washing process of the dry cleaner according to the embodiment.

FIG. 4 is a flowchart of soap concentration management control in the dry cleaner of the embodiment.

FIG. 5 is a flowchart of a failure detection process of a soap concentration sensor in the dry cleaner according to the embodiment.

FIG. 6 is a control flowchart of a liquid removal process in the dry cleaner according to the embodiment.

FIG. 7 is a diagram showing a relationship among an eccentric load amount, a liquid removal rotation speed, a drying time, and a temperature difference control value in the dry cleaner of the present embodiment.

FIG. 8 is a schematic diagram illustrating a movement state of laundry during a balance adjustment operation during a liquid removal process in the dry cleaner according to the present embodiment.

FIG. 9 is a schematic vertical sectional view of an outer tank in the dry cleaner of the present embodiment.

FIG. 10 is a schematic cross-sectional view showing the structure of an inspection communication port in the dry cleaner of the present embodiment.

FIG. 11 is a diagram showing a function of a packing provided at a communication port for inspection in the dry cleaner of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Outer tank 2 ... Drum 2a ... Drum motor 3a ... Inlet side airway 3b ... Outlet side airway 3c ... Upper airway 5 ... Fan 6 ... Blower motor 7 ... Divider valve 8 ... Inlet 9 ... Inlet valve 10 ... Exhaust port 11 ... Drying heater 12 ... Drum entrance temperature sensor 14 ... Drum exit temperature sensor 15 ... Dry cooler 20 ... Solvent tank 21 ... Pump 23 ... Filter 24 ... Solvent heater 25 ... Liquid temperature sensor 27 ... Soap concentration sensor 28 ... Solvent cooler 29 ... Soap storage tank 30 ... Boiler 31 ... Chiller 32 ... Water recovery tank VL1 ... Supply valve VL2 ... Drainage valve VL3, VL4 ... 3-way switching valve VL5 ... Soap supply valve VS1-VS3 ... Steam valve 40 ... Control unit 43 ... Display unit 44 ... operation detection circuit 45 ... water detection sensor 50 ... inspection communication port 51 ... opening 53 ... lid 55 ... packing 55a ... outer projection 55 ... inside projection

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshitsugu Kitamura 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Mitsuru Nagana 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Yoshitaka Tsunomoto 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. (Reference) 3B155 AA10 BA01 BB02 BB05 CB70 CC09 CC15 CC17 CC18 JB06 KA11 KA23 KA27 LA14 LA16 LB15 LB24 LB28 MA01 MA02 MA05 MA06 MA08

Claims (14)

[Claims] 1. A washing / drying machine for performing washing using a volatile solvent, comprising: an outer tub serving also as a washing room and a drying room; and an outer tub including the outer tub to form a circulation air path. An air passage to which an inlet and an outlet are connected, a blower for circulating air in the circulation air passage, a cooler for condensing the solvent installed in the air passage, and a downstream side of the cooler in the air passage And a heater for air heating installed in the washing machine, wherein a part of a pipe of a solvent flow path including a solvent storage tank containing a solvent is provided in a ventilation path between the cooler and the heater. A washing / drying machine characterized by being provided with a solvent cooler. 2. A solvent heater for heating a solvent, and a temperature detecting means for detecting a temperature of the solvent are provided in the solvent flow path.
By flowing a solvent through the solvent flow path and controlling the heating means based on the temperature detected by the temperature detecting means when operating the air blowing means, the cooler and the heater, the temperature of the solvent is maintained near a predetermined temperature. The washing and drying machine according to claim 1, wherein the washing and drying is performed. 3. The solvent flow path is a circulation flow path including a solvent storage tank, and the temperature of the solvent is controlled by flowing the solvent through the circulation flow path during a drying process of the laundry. The washing and drying machine according to claim 1. 4. A washing and drying machine for performing washing using a volatile solvent, comprising: an outer tub serving also as a washing room and a drying room; a solvent supply flow path for supplying a solvent from a solvent storage tub to the outer tub; A solvent discharge flow path for collecting the solvent discharged from the outer tank into the solvent storage tank, and a solvent circulation flow path for circulating the solvent from the solvent storage tank to the solvent storage tank via the solvent purifying means are formed to be switchable. A washing / drying machine having a solvent flow path, a) a soap concentration detecting means provided in the solvent circulation flow path, b) a soap charging means for charging the soap into the solvent, and c) a start of the washing operation. Immediately thereafter, the soap concentration in the solvent is detected by the soap concentration detecting means, and if the detected value is equal to or more than a predetermined value, the operation is started. During a predetermined time, circulate the solvent, and then The soap concentration in the solvent is detected again by the soap concentration detecting means, and when the detected value is equal to or more than a predetermined value, the operation is started. On the other hand, when the detected value is less than the predetermined value, the soap injecting means is used. A washing and drying machine comprising: operation control means for causing a soap to be charged into the washing machine. 5. The operation control means detects the soap concentration in the solvent again by the soap concentration detection means after performing the soap input operation, and starts the operation if the detected value is equal to or more than a predetermined value. 5. The washing and drying machine according to claim 4, wherein the operation is stopped if the detected value is less than a predetermined value. 6. The washing / drying machine according to claim 5, wherein the operation control means issues an abnormality notification when the operation is stopped. 7. An outer tub serving also as a washing room and a drying room, and a solvent flow path for supplying a solvent from the solvent storage tub to the outer tub and for collecting the solvent discharged from the outer tub to the solvent storage tub. In the washing and drying machine provided, a) soap concentration detecting means provided in the solvent flow path, and b) provided in the solvent flow path and upstream of the soap concentration detection means, and provided in the solvent. Soap input means for inputting soap, c) immediately after the soap input operation by the soap input means,
A control unit that determines a degree of increase in the soap concentration detected by the soap concentration detection unit. 8. The washing and drying machine according to claim 7, wherein the control unit prohibits a subsequent soap input operation when the degree of increase in the soap concentration is low. 9. The washing and drying machine according to claim 8, wherein the control means continues the operation when the degree of increase in the soap concentration is low, and notifies the abnormality at the end of the operation at the latest. 10. A washing / drying machine that stores laundry in a drum rotatably disposed inside an outer tub that also serves as a washing room and a drying room, and sequentially performs washing, liquid removal, and drying. An eccentric load detecting means for detecting an eccentric load caused by uneven distribution of the laundry at the time of liquid removal; b) a liquid removing operation control means for determining a liquid removing rotation speed according to the detected amount of eccentricity; and c) a detected eccentricity. A drying operation control means for determining a drying time according to the amount; 11. A washing / drying machine for performing washing using a volatile solvent, comprising: an inlet ventilation passage connected to the outer tub;
An outlet ventilation path connected to the outer tub, hot air supply means for supplying hot air to the outer tub through the inlet ventilation path and extracting air passing through the outer tub from the outlet ventilation path, The drying operation control means further includes an inlet temperature detecting means for detecting an air temperature, and an outlet temperature detecting means for detecting an air temperature on the outlet side of the outer tank, wherein the drying operation control means determines a difference between the inlet temperature and the outlet temperature by a predetermined temperature. The washing / drying machine according to claim 10, wherein the hot air supply means is controlled so as to maintain the difference in the vicinity of the difference, and the temperature difference is determined according to the amount of eccentricity detected by the eccentric load detecting means. 12. A washing / drying machine for performing washing using a volatile solvent, wherein laundry is accommodated in a drum rotatably disposed inside an outer tub, and washing, dewatering and drying are performed. In the washing and drying machine which is sequentially executed, a) a motor for rotating and driving the drum, and b) rotating the drum at a rotation speed such that a solvent contained in the laundry in the drum escapes to some extent at the beginning of the liquid removing operation. First rotation control means for controlling the motor, and c) after the control by the first rotation control means, the motor is controlled to rotate the drum so as to distribute the laundry unevenly distributed in the drum. Washing and drying machine comprising: a second rotation control unit that is driven to rotate. 13. An outer tub serving also as a washing room and a drying room, an air passage having an inlet and an outlet connected to the outer tub so as to form a circulation air passage including the outer tub, and air flowing through the circulation air passage. Air circulation means, and a heater for air heating installed in the ventilation path, wherein the heater includes a steam pipe through which steam flows, and heat generated between the pipe and surrounding air. A washing / drying machine that heats the air by replacement; a) a water collecting tank provided at a predetermined position between the heater and the outer tub in the ventilation path; and b) water in the water collecting tank. A washing and drying machine comprising: a water detecting means for detecting that water has accumulated; and c) an abnormality notifying means for notifying an abnormality by receiving a detection signal from the water detecting means. 14. An outer tub serving also as a washing room and a drying room, an air passage having an inlet and an outlet connected to the outer tub so as to form a circulation air passage including the outer tub, and air flowing through the circulation air passage. A washing / drying machine provided with a blowing means for circulating air, and a heater for air heating provided in the ventilation path, wherein a communication port communicating with the outside is provided in the ventilation path, and a lid for closing the communication port is provided. The body is detachably provided, and an elastic member for maintaining airtightness with the back surface of the lid is attached to an edge of the communication port, and the elastic member projects obliquely upward toward the inside of the communication port. A washing and drying machine comprising: a projection; and an outer projection that projects obliquely upward toward the outside of the communication port.