JPH06126097A - Dryer for clothing - Google Patents

Abstract

PURPOSE:To enhance solvent recovering efficiency, to prevent the temp. rise in a room and to reduce the noise in the room by providing a condenser to the cooling chamber of a solvent recovering and circulating passage and arranging the freezing compressor allowed to communicate with the condenser of the cooling chamber and compressing freezing gas to supply the same to the condenser outdoors. CONSTITUTION:A drying drum 3 is arranged in a drying chamber 2 and an exhaust passage 7 is allowed to communicate with the exhaust port 5 of the drying chamber 2 to arrange a blower 6 to the exhaust passage 7. A suction passage 9 is allowed to communicate with the suction port 8 of the drying chamber 2 and a heating chamber 12 is provided to the suction passage 9 and a cooling chamber 15 is provided between the exhaust passage 7 and the suction passage 9 to be connected to both passages. A solvent recovering passage 16 is allowed to communicate with the cooling chamber 5 and a solvent recovering and circulating passage 26 is formed from the drying chamber 2, the exhaust passage 7, the suction passage 9 and the cooling chamber 15. A condenser 14 is provided to the cooling chamber 15 and a freezing compressor 28 is arranged outdoors and freezing gas is compressed by the freezing compressor 28 to be supplied to the condenser 14. By this constitution, solvent recovering efficiency can be enhanced and the temp. rise in the room in which a dryer is arranged can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying device for clothes and the like, and more particularly to a drying device for drying clothes while washing them with a petroleum dry cleaning solvent.

[0002]

2. Description of the Related Art As a dryer for drying clothes washed with a conventional organic solvent, for example, the air heated in a heating chamber is sent to the drying chamber, and when the solvent vapor concentration increases, the outside air is removed. A structure is known in which the solvent vapor is inhaled and the air passing through the drying chamber is released into the atmosphere to prevent the solvent vapor from exploding.

As the organic solvent used in this dryer, petroleum-based dry cleaning solvents have been used in recent years in place of harmful synthetic organic solvents such as chlorofluorocarbon and ethane. If it is released into the atmosphere while being contained in the exhaust air, it causes environmental pollution and has a problem that the odor of solvent vapor is emitted.

Therefore, a dryer equipped with a solvent recovery device that solves this problem by cooling and recovering the solvent vapor is becoming widespread. For example, as described in Japanese Utility Model Laid-Open No. 59-73298. In addition, the air heated in the heating chamber is sent to the drying chamber, the air exhausted from the drying chamber is cooled in the cooling chamber equipped with the condenser, and the solvent vapor and water contained in the exhaust air are liquefied. Then, the air from which the solvent vapor has been separated is heated again in the heating chamber and circulated so as to be sent to the drying chamber,
A structure is known in which the solvent is dried while being collected. In this dryer with a solvent recovery device, water is circulated through a condenser in a cooling chamber to cool solvent vapor and the like contained in air.

As described in Japanese Utility Model Laid-Open No. 59-73298, a conventional dryer with a solvent recovery device generally uses a water cooling system using water as a refrigerant, but recently, A dryer having a structure including a refrigerating unit including a refrigerating compressor that uses a refrigerating gas such as CFC frozen at 0 ° C. or less as a refrigerant and supplies the refrigerating gas by compression is beginning to appear on the market.

[0006]

However, among the dryers with a solvent recovery device having the above-mentioned conventional structure, the water-cooled type dryer is used as it is because the temperature of water is relatively high, generally about 5 ° C to about 20 ° C. Then, there is a problem that the temperature difference from the solvent vapor is small and the cooling efficiency is poor. Also, if well water can be used, the cost will not be expensive, but the area where well water can be used is limited.On the other hand, if tap water is used, the cost will be high and the temperature will be extremely high and the cooling efficiency will deteriorate depending on the season. I also have. Furthermore, although installing a chilled water device that cools the water solves this problem, it is more costly, and it is necessary to secure an installation space for this chilled water device and a space for piping, etc. There is a problem that the dryer can not be installed in.

Further, among the dryers with a solvent recovery device of the above-mentioned conventional structure, those having a built-in refrigerating unit including a refrigerating compressor have a refrigerating gas temperature of about -5 ° C. Although the cooling efficiency is high because the temperature difference is large,
Since the temperature inside the working room rises due to the exhaust heat of the refrigeration compressor, there is no air conditioner or ventilation system installed in the working room.
Especially when the working room is small, such as in summer, the temperature inside the room will rise significantly and the dryer will either have to be stopped or the cooling capacity will have to be reduced, making efficient operation impossible. . In addition, there is a problem that a large amount of noise is generated by the refrigeration compressor during operation, which makes the operator uncomfortable and deteriorates the working environment.

The present invention has been made in view of the above problems. By installing a refrigerating compressor for supplying a refrigerating gas such as CFC for recovering solvent vapor outdoors, high solvent recovery efficiency is achieved. , It is possible to prevent the temperature rise in the room where the dryer is installed and reduce the noise in the room.
Moreover, it is an object of the present invention to provide a drying device for clothes or the like that can be easily installed in a small space.

[0009]

A drying apparatus for clothes and the like according to the present invention includes a drying chamber having a drying drum, an exhaust passage communicating with an exhaust port of the drying chamber and having a blower, and an intake port of the drying chamber. In a drying device for clothes or the like, which forms a solvent recovery circulation path with an intake path having a heating chamber and a cooling chamber that is connected between the exhaust path and the intake path and has a solvent recovery path in communication with each other. The cooling chamber of the solvent recovery circulation path is provided with a condenser, and a refrigeration compressor that is in communication with the condenser of the cooling chamber and that compresses and supplies the frozen gas to the condenser is installed outdoors.

[0010]

In order to dry an object to be dried such as clothes in the drying chamber, the drying apparatus for clothes of the present invention sends the air heated in the heating chamber to the drying chamber and stores it in the drying drum of the drying chamber. Refrigerant gas such as CFCs that circulates in the condenser of this cooling chamber by evaporating the solvent contained in the material to be dried and the moisture, and sending the air containing the solvent vapor and the moisture into the cooling chamber. The solvent is liquefied and separated along with water by liquefying, and the cooled air is heated again in the heating chamber and sent to the drying chamber, and the air is subjected to solvent recovery circulation in the heating chamber, drying chamber and cooling chamber sequentially. Be seen.

The solvent vapor evaporated from the material to be dried has a high pressure which circulates in the condenser in the cooling chamber and has a temperature of 0.degree.
Since it is cooled by the following frozen gas, the solvent recovery efficiency is improved, and the refrigeration compressor that supplies this frozen gas to the condenser in the cooling chamber is separated from the drying device and installed outdoors, so it is dried. The temperature rise in the room where the device is installed is prevented, and the generation of noise in the room is prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a drying device for clothes and the like, and a drying chamber 2 is disposed inside the drying device 1, and the drying chamber 2 is made of punching metal or the like and has a large number of passages on its peripheral surface. A substantially cylindrical drying drum 3 having pores is rotatably provided, and articles to be dried such as clothes can be put in and out of the drying drum 3 through a front opening / closing door (not shown) of the drying chamber 2. . A stirring blade 4 for stirring the material to be dried is provided in the drying drum 3.

An exhaust port 5 is opened in the lower part of the drying chamber 2, and an exhaust path 7 provided with a blower 6 is connected to the exhaust port 5. Further, an intake port 8 is provided above the drying chamber 2.
A heating chamber 12 provided with a heater 11 having a steam pipe 10 is formed in an intake passage 9 communicating with the intake port 8.

A cooling chamber 15 provided with a condenser 14 having a refrigerant pipe 13 is connected to the exhaust passage 7, and the intake passage 9 is connected to the outlet side of the cooling chamber 15. A solvent recovery passage 16 is communicated with the lower portion of the cooling chamber 15, and a solvent water separator 17 is connected to the solvent recovery passage 16. This solvent water separator 17 is a solvent outlet for separating the solvent and water by the specific gravity.
A water discharge port 18 and a water discharge port 19 are formed vertically.

An exhaust air passage 20 provided in parallel with the cooling chamber 15 is connected to the outlet side of the exhaust passage 7.
The outlet side of 20 is open to the atmosphere.

Further, the exhaust passage 7 is provided with a Linton filter 21 on the suction side of the blower 6.

Further, an openable / closable outside air introduction port 22 for introducing outside air is opened in the intake passage 9, and the outside air introduction port 22 is opened / closed by an air cylinder, a hydraulic cylinder or an electromagnetic device. A damper 23 is provided.

Further, on the outlet side of the exhaust passage 7, there is provided a second damper 24 for selectively communicating the exhaust passage 7 with the cooling chamber 15 and the exhaust air passage 20, and this cooling chamber is also provided.
A third damper 25 that selectively communicates with the intake passage 9 and the exhaust air passage 20 is provided on the outlet side of 15, and both dampers 24, 25 are switched by an air cylinder, a hydraulic cylinder, or an electromagnetic device. It is designed to be opened and closed.

The drying chamber 2, the exhaust passage 7 communicating with the exhaust port 5 of the drying chamber 2, the outlet side of the exhaust passage 7 and the intake passage 9 are connected to the outlet side. A solvent recovery circulation path 26 is formed with the cooling chamber 15.

As shown in FIGS. 1 and 2, the refrigerant pipe 13 of the condenser 14 provided in the cooling chamber 15 is connected to the connecting pipe 27.
Is connected to a refrigeration compressor 28 installed outdoors. Then, by driving this refrigeration compressor 28, for example, a frozen gas such as Freon, which is frozen to about −5 ° C. and is compressed to a high pressure, as a refrigerant, flows through the connecting pipe 27 into the refrigerant in the cooling chamber 15. It is supplied to the pipe 13 and circulates through the refrigerant pipe 13.

Further, a first adjusting valve 29 is provided on the connecting pipe 27, and the amount of the frozen gas supplied to the cooling chamber 15 can be adjusted by the first adjusting valve 29.

Further, the steam pipe 10 of the heater 11 is provided with a second adjusting valve 30. By adjusting the second adjusting valve 30, the heater 11 controls the air to a temperature according to the material to be dried. To heat.

Further, the cooling chamber 15 provided with the condenser 14 is provided with a transparent window 31 which can be opened and closed so that the inside can be seen from the outside.

Next, the operation of this embodiment will be described.

An object to be dried such as clothes washed with a petroleum-based dry cleaning solvent is put into the drying drum 3 of the drying chamber 2. In addition, an outside air introduction port for introducing outside air into the intake passage 9
22 is closed by the first damper 23, the outlet side of the exhaust passage 7 is communicated with the cooling chamber 15 by the second damper 24, and the outlet side of the cooling chamber 15 is sucked by the third damper 25. Road 9
To form a solvent recovery circulation path 26. Then, when steam is circulated through the steam pipe 10 of the heater 11 and the blower 6 is driven, the air heated by the heater 11 of the intake passage 9 is introduced into the drying chamber 2 and the rotating drying drum 3 is rotated.
The petroleum-based dry cleaning solvent adhering to the material to be dried inside is evaporated, and the water is also evaporated, and the evaporated solvent and water are guided to the cooling chamber 15 from the exhaust passage 7 together with the air, and the solvent and water are cooled. The liquefied and liquefied solvent and the liquefied solvent and water are discharged to the solvent recovery path 16, and the solvent introduced into the solvent water separator 17 from this solvent recovery path 16 is separated by the difference in specific gravity with water and the upper solvent discharge port. The water is recovered from 18 and the water is discharged from the lower water discharge port 19. Then, the air from which the solvent and the water are separated is introduced into the intake passage 9 and again the heater 11
The material to be dried is dried, and the solvent is recovered.

In the solvent recovery circulation step, the blower 6 is driven and the refrigeration compressor 28 is driven,
From the refrigeration compressor 28 via the connecting pipe 27, for example, -5
By supplying the refrigerating gas such as Freon that has been frozen to a high temperature of about ℃ to the refrigerant pipe 13 of the cooling chamber 15,
The cooling chamber 15 is cooled.

The temperature and pressure of this frozen gas are adjusted by an adjusting device (not shown) inside the refrigeration compressor 28, but the amount of frozen gas per unit time supplied to the cooling chamber 15 is adjusted. In addition to this adjusting device, the supply amount is adjusted by adjusting a first adjusting valve 29 provided on the connecting pipe 27.

As described above, a refrigerant having a relatively low temperature of about -5 ° C. and a large temperature difference from the solvent vapor is used, and since it has a high pressure, it is supplied to the refrigerant pipe 13 of the cooling chamber 15. Since the amount of frozen gas that is supplied per unit time is large, the cooling chamber can be used in comparison with a conventional water-cooling dryer.
The cooling capacity for cooling is increased. Therefore, the cooling chamber 15 can be sufficiently cooled until most of the solvent and water contained in the air can be cooled and liquefied, and the solvent recovery efficiency is improved.

The refrigerating compressor 28 is the drying device 1.
Since it is separated from the condenser 14 having the refrigerant pipe 13 provided inside and installed outdoors, the exhaust heat from this refrigeration compressor 28 is released outdoors, and the noise of this refrigeration compressor 28 is outdoors. Therefore, when the drying device 1 is operated, the drying device 1
The temperature in the work chamber in which is installed does not rise, and noise in the work chamber is prevented. Therefore, the drying device 1 can be operated for a long time, the working efficiency is improved, the working environment is not deteriorated, and the worker is not uncomfortable.

Further, unlike the conventional dryer having a built-in refrigerating compressor, since the refrigerating compressor 28 is installed outdoors, the drying device 1 can be downsized and easily installed even in a narrow space. be able to.

The solvent recovery circulation step is, for example,
After being performed for 15 minutes, the outside air introducing port 22 for continuously introducing the outside air to the intake passage 9 is opened by the first damper 23 by the timer control, and the outlet side of the exhaust passage 7 is set to the cooling chamber 15 by the second damper 24. While communicating with each other, the third damper 25 is switched and opened / closed so that the outlet side of the cooling chamber 15 is communicated with the atmosphere through the exhaust air passage 20, and the outside air is introduced into the drying chamber 2 through the outside air inlet 22 of the intake passage 9. The temperature of the drying chamber 2 is lowered and the concentration of the evaporated solvent is reduced to prevent explosion, and the vapor and air of the solvent exhausted from the drying chamber 2 are introduced into the cooling chamber 15 from the exhaust passage 7. The evaporated solvent is liquefied and recovered from the solvent recovery passage, and the outside air introduction step and the exhaust step of exhausting the cooled air from the exhaust air passage 20 are performed, for example, for 5 seconds. Then, subsequently, the outside air inlet 22 for introducing outside air into the intake passage 9 is closed by the first damper 23, and the outlet side of the exhaust passage 7 is kept in communication with the cooling chamber 15 by the second damper 24. The damper 25 of No. 3 is switched and opened / closed so that the lead-out side of the cooling chamber 15 is the intake passage 9
And the solvent recovery circulation step is performed for 30 seconds. The outside air introduction process and the solvent recovery circulation process are alternately performed, for example, 5
Do for 10 minutes. In this outside air introduction process, the exhaust air that is exhausted is cooled, so it is cooled even if it contains a small amount of solvent vapor, and the recovery rate of the solvent is increased and even if the exhaust air contains a small amount of solvent vapor. Has little odor.

After the cycle operation of the outside air introduction process and the solvent recovery circulation process, the outside air introduction port 22 for introducing the outside air into the intake passage 9 is continuously closed by the first damper 23 with the second damper by the timer control. The outlet 24 of the exhaust passage 7 is connected to the cooling chamber 15 by the damper 24 of the third damper 25.
The outlet side of the cooling chamber 15 is communicated with the intake passage 9, the heater 11 of the intake passage 9 is stopped, and the air cooled in the cooling chamber 15 is circulated to the drying chamber 2 by driving the blower 6. , The drying chamber 2 is cooled, and the material to be dried in the drying drum 3 is cooled. After this circulation cooling process is performed for 5 to 10 minutes, for example, the outside air introducing port 22 for continuously introducing outside air into the intake passage 9 is opened by the first damper 23 and the exhaust passage is opened by the second damper 24 by the timer control. While keeping the outlet side of 7 in communication with the cooling chamber 15, the third damper 25 is switched to open / close to allow the outlet side of the cooling chamber 15 to communicate with the atmosphere via the exhaust air passage 20.
The heater 11 is stopped, the outside air is supplied to the intake passage 9 from the outside air inlet 22, and the cooling chamber 15 is cooled while cooling the drying chamber 2 at the outside air temperature.
And is exhausted to the atmosphere through the exhaust air passage 20 on the outside air side.
The drying chamber 2 is deodorized, the exhaust air is also cooled, and the odor of the exhaust air is reduced. This deodorizing process is performed for one minute, for example, and the entire drying process is completed.

A temperature sensor (not shown) or a concentration sensor for detecting the concentration of solvent vapor is provided in the exhaust passage 7 of the drying chamber 2, and the temperature sensor or concentration sensor and the first damper 23 are provided during the solvent recovery circulation process. , The second damper
It is also possible to interlock the switching of the 24 and the third damper 25.

In the above embodiment, the solvent recovery circuit 26
An open / closed outside air inlet 22 for introducing outside air is provided in the intake passage 9 and switching of a third damper 25 for selectively communicating the intake passage 9 and the exhaust air passage 20 with the outlet side of the cooling chamber 15 With a structure provided with a damper, when the air in the drying chamber 2 is released into the atmosphere when the concentration of solvent vapor increases,
Although the one in which the exhaust air is cooled and then discharged through the exhaust air passage 20 has been described, the present invention is not limited to this, and the outside air introduction port 22 and the switching damper may be provided.

[0036]

According to the present invention, since the solvent vapor evaporated from the material to be dried is cooled by the high pressure circulating in the condenser of the cooling chamber and the refrigerating gas having a temperature of 0 ° C. or less, the solvent recovery efficiency is improved. As the temperature rises, the refrigeration compressor that supplies this refrigeration gas to the condenser in the cooling chamber is separated from the dryer and installed outdoors, so the temperature inside the room where the dryer is installed can be prevented and It is possible to prevent the generation of noise. Therefore, the drying device can be operated for a long time, the working efficiency is improved, the working environment is not deteriorated, and the worker is not uncomfortable.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a clothes drying apparatus according to an embodiment of the present invention.

[Fig. 2] Fig. 2 is a view showing an installation state of the drying device and the refrigerating compressor.

[Explanation of symbols]

 1 Drying Device 2 Drying Chamber 3 Drying Drum 5 Exhaust Port 6 Blower 7 Exhaust Path 8 Intake Port 9 Intake Path 12 Heating Room 14 Condenser 15 Cooling Room 16 Solvent Recovery Path 20 Exhaust Air Path 26 Solvent Recovery Circulation Path 28 Refrigeration Compressor

Claims (1)

[Claims] 1. A drying chamber in which a drying drum is disposed, an exhaust path communicating with an exhaust port of the drying chamber and having a blower, an intake path communicating with an intake port of the drying chamber and having a heating chamber, and the exhaust path and intake air. In a drying device for clothes or the like, which forms a solvent recovery circulation path with a cooling chamber that is connected in communication with the passage and communicates with the solvent recovery passage, the cooling chamber of the solvent recovery circulation passage is equipped with a condenser, A drying device for clothes or the like, characterized in that a refrigerating compressor, which is communicated with the condenser of the cooling chamber and supplies refrigerating gas to the condenser, is installed outdoors.