JPH048398A - Drier for clothes or the like - Google Patents

Abstract

PURPOSE:To allow exhaust air to flow in air path with small air path resistance, in the case of drying an object to be dried without using a solvent by water washing or the like, so as to make efficient drying possible by forming a discharge exhaust air path opened to atmosphere in parallel to a cooling chamber. CONSTITUTION:In the case of drying an object to be dried by water washing or the like, an outside air-introducing port 21 of a suction air path 8 is opened by a damper 22, a drawout side of an exhaust air path 6 communicates with an exhaust air path 19 by a damper 23 and an introducing side of the suction air path 8 is closed by the damper 23. When a blower 5 is driven by circulating steam in a steam pipe 9 of a heater 10, heated air in the heater 10 is introduced into a drying chamber 1, water adhering to the object to be dried in a rotating drying drum 2 is evaporated and the evaporated water is discharged with air to the atmosphere from the exhaust air path 19 without passing through a cooling chamber 14 from an exhaust path 6. Drying efficiency is improved with small air path resistance because this exhaust air passes not through the cooling chamber 14.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a drying device for clothes, etc., which dries clothes while recovering the solvent from the clothes washed with a petroleum-based dry cleaning solvent. Regarding.

(Prior Art) Conventional dryers for drying clothes washed with petroleum-based dry cleaning solvents use air heated in a heating chamber, as described in Japanese Utility Model Application No. 59-73298. is sent to the drying chamber, the air exhausted from the drying chamber is cooled in the cooling chamber, the solvent vapor and moisture contained in the exhaust air are liquefied, and the air from which the solvent vapor has been separated is heated again in the heating chamber. The solvent is circulated and sent to the drying chamber, and the solvent is dried while being recovered.The concentration of the solvent in the circulation path is detected, and the concentration of solvent vapor is detected when the ventilation air stops or the flow rate decreases due to filter clogging. There is a known structure that prevents the solvent vapor from exploding by sucking outside air into the drying chamber and releasing the air that has passed through the drying chamber into the atmosphere when the concentration of solvent vapor is detected to be high enough to cause an explosion. There is.

(Problems to be Solved by the Invention) In the dryer of the above conventional structure, even when drying items to be dried such as clothes that have been washed in water, a condenser is provided in the same way as when drying items to be dried that have been dry cleaned. Since the air passes through a cooling chamber, the air passage resistance is high and there is a problem in that efficiency is low when drying items that have been washed with water.

The present invention has been made in view of the above-mentioned problems, and when drying an object to be dried that has been washed by dry cleaning, the object to be dried is dried in a solvent recovery circulation process, and a petroleum-based dry cleaning solvent is recovered, and then washed with water. To provide a drying device for clothes, etc., which can be dried with high drying efficiency by allowing exhaust air to flow through an air path with low air path resistance when drying items to be dried such as laundry without using a solvent.

[Structure of the invention]

(Means for Solving the Problems) The apparatus for drying clothes, etc. of the present invention comprises a drying chamber in which a drying drum is arranged, an exhaust passage communicating with an exhaust port of the drying chamber and having an air blower, and an inlet of a forward-bending drying chamber. A solvent recovery circulation path is formed by an intake passage that is connected to the air intake passage and has a heating chamber, and a cooling chamber that is connected in communication between the exhaust passage and the intake passage and has a solvent recovery passage in communication, and is arranged in parallel with the cooling chamber. An air outlet and exhaust air passage opened to the atmosphere is provided, an openable and closable outside air inlet for introducing outside air into the intake passage of the solvent recovery circulation passage is provided, and the cooling chamber and the exhaust air passage are provided on the outlet side of the exhaust passage. The system is equipped with a switching damper that selectively communicates.

(Function) When the clothes drying device of the present invention dries clothes to be dried such as clothes washed by dry cleaning, the air heated in the heating chamber is sent to the drying chamber and stored in the drying drum of the drying chamber. The solvent contained in the material to be dried is evaporated, and the water is evaporated, and the air containing this solvent vapor and water is sent to a cooling chamber, where it is cooled and the solvent vapor is liquefied and separated along with the water. The cooled air is heated again in the heating chamber and sent to the drying chamber, and the air is sequentially circulated through the heating chamber, the drying chamber, and the cooling chamber, and solvent recovery circulation is performed. When drying items such as clothes that have been washed with water without using dry cleaning solvents,
Switch the damper, connect the exhaust air passage to the outlet side of the exhaust passage, open the outside air inlet that introduces outside air into the intake path, take in outside air from the outside air intake, and dry the air heated by the heater. The moisture contained in the material to be dried is evaporated, and the air containing the evaporated moisture is exhausted into the atmosphere from the exhaust air path without passing through the cooling chamber. Since this exhaust air does not pass through the cooling chamber, there is little air path resistance, the heated air passes through the drying chamber efficiently, and drying is performed effectively.

(Example) The configuration of an embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 designates a drying chamber, and this drying chamber 1 is equipped with a substantially cylindrical drying drum 2 made of punched metal or the like and having a large number of ventilation holes on its circumferential surface, which is rotatable. (not shown) allows articles to be dried, such as clothes, to be taken in and out of the drying drum 2. And this drying drum 2
A stirring blade 3 for stirring the material to be dried is provided inside.

Further, an exhaust port 4 is opened in the lower part of the drying chamber 1, and an exhaust path 6 provided with an air blower 5 is communicated with the exhaust port 4. Furthermore, an intake lower is opened in the upper part of the drying chamber 1,
A heating chamber 11 provided with a heater 1o having a steam pipe 9 is formed in the intake passage 8 communicating with the intake lower.

Further, the exhaust passage 6 includes a condenser 1 having a cooling water pipe 12.
3 is connected to the cooling chamber 14, and the air intake passage 8 is connected to the outlet side of the cooling chamber 14.

Further, a solvent recovery path 15 is communicated with the lower part of this cooling chamber 14, and a solvent water separator 16 is connected to this solvent recovery path 15. This solvent-water separator 16 has a solvent outlet 17 and a water outlet 18 formed above and below, which separate the solvent and water based on their specific gravity.

Further, an exhaust air passage 19 provided in parallel with the cooling chamber 14 is connected to the outlet side of the exhaust passage 6, and the outlet side of the exhaust air passage 19 is opened to the atmosphere.

Further, a Linton filter 20 is provided in the exhaust passage 6 on the suction side of the blower 5.

Further, an outside air introduction port 21 that can be opened and closed to introduce outside air is opened in the intake passage 8, and this outside air introduction port 21 is provided with a first damper 22 that is opened and closed by an air cylinder, a hydraulic cylinder, an electromagnetic device, or the like. It is being

Further, a second damper 23 is provided on the outlet side of the exhaust passage 6 to selectively communicate the exhaust passage 6 with the cooling chamber 14 and the exhaust air passage 19. A third damper 211 that selectively communicates with the intake passage 8 and the exhaust air passage 19 is provided on the side, and both dampers 22 and 23 are switched open and closed by an air cylinder, a hydraulic cylinder, or an electromagnetic device. It looks like this.

The drying chamber 1, an exhaust passage 6 communicating with the exhaust port 4 of the drying chamber 1, and a cooling chamber 14 connected to the outlet side of the exhaust passage 6 and connecting the intake passage 8 to the outlet side.
A solvent recovery circuit 25 is thus formed.

Further, a regulating valve 26 is provided in the steam pipe 9 of the heater 10.
is provided, and by adjusting this adjustment valve 26, the heater 10
heats the air to a temperature depending on the material to be dried.

Note that the drying chamber 1 is provided with a nozzle 27 for spraying live steam.

Furthermore, the cooling chamber 14 equipped with the condenser 13 is provided with a see-through window 28 that can be opened and closed so that the inside can be viewed from the outside.

Next, the operation of this embodiment will be explained.

Articles to be dried, such as clothes washed with a petroleum-based tri-cleaning solvent, are put into a drying drum 2 in a drying chamber 1. In addition, the air intake passage 8 is provided with an outside air inlet 21 that introduces outside air.
The damper 22 closes the block and the second damper 2
3, the outlet side of the exhaust passage 6 is made to communicate with the cooling chamber 14, and the third damper 24 makes the outlet side of the cooling chamber 14 communicate with the intake passage 8, thereby forming a solvent recovery circulation passage 25. Then, when steam is circulated through the steam pipe 9 of the heater 10 and the blower 5 is driven, air heated by the heater 10 in the intake path 8 is introduced into the drying chamber 1 and inside the rotating drying tram 2. The petroleum-based dry cleaning solvent adhering to the object to be dried is evaporated, and the moisture is also evaporated, and the evaporated solvent and moisture are led together with air to the cooling chamber 14 through the exhaust passage 6, where the solvent and moisture are cooled. The liquefied solvent and water are discharged into the solvent recovery path 15, and the solvent introduced from the solvent recovery path 15 into the solvent-water separator 16 is separated by the difference in specific gravity from water, and is then discharged to the upper solvent outlet 17. , and the water is discharged from the lower water outlet 18. Then, the air from which the solvent and moisture have been separated is introduced into the intake passage 8 and heated again by the heater 10, and this process is sequentially repeated to dry the material to be dried and recover the solvent. Also, during this solvent recovery circulation process, live steam is appropriately blown into the drying chamber 1 from the nozzle 27 to increase the humidity in the drying chamber 1 and impart humidity to the material to be dried in the drying drum 2. It suppresses the generation of static electricity and prevents solvent vapor from exploding due to static electricity discharge.

After this solvent recovery circulation process has been carried out for, for example, 15 minutes, the first damper 22 opens the outside air inlet 21 which continues to introduce outside air into the intake path 8 under timer control, and the second damper 23 exhausts the air. While the outlet side of the cooling chamber 14 remains in communication with the cooling chamber I11, the third damper 24 is switched to open and close to connect the outlet side of the cooling chamber 14 to the atmosphere via the exhaust air path 19, and the air is drawn into the drying chamber 1. Route 8 outside air inlet 2
The outside air is supplied from the drying chamber 1 to lower the temperature of the drying chamber 1 and dilute the concentration of the evaporated solvent to prevent explosion.
The evaporated solvent is liquefied and recovered from the solvent recovery path, and the cooled air is passed through the exhaust air path 18.
The outside air introduction stroke and the exhaust stroke are performed for, for example, 5 seconds. Then, the outside air inlet 21 that introduces outside air into the intake path 8 is closed by the first damper 22, and the second damper 23 is used to close the outside air inlet 21, which introduces outside air into the air intake path 8, while leaving the outlet side of the exhaust path 6 in communication with the cooling chamber 14. Cooling chamber 1 is opened and closed by switching the damper 24 of 3.
4 is communicated with the intake passage 8, and the above-mentioned self-solvent recovery circulation process is performed for 30 seconds. The outside air introduction step and the solvent recovery circulation step are alternately performed for, for example, 5 to 10 minutes. In this outside air introduction process, the exhaust air that is exhausted is cooled, so even if it contains some solvent vapor, it is still cooled, increasing the solvent recovery rate and even if the exhaust air contains some solvent vapor. There is little odor.

Further, after performing the cycle operation of the outside air introduction process and the solvent recovery circulation process, the outside air introduction port 21 that introduces outside air into the intake path 8 is closed by the first damper 22 under timer control, and the second damper 23 is closed by the first damper 22. At the same time, the outlet side of the exhaust passage 6 is communicated with the cooling chamber 14, and the third damper 24 is switched open and closed to communicate the outlet side of the cooling chamber 14 with the intake passage 8, and the heater 10 of the intake passage 8 is stopped. and circulate the air cooled in the cooling chamber I4 to the drying chamber 1 by driving the blower 5,
The drying chamber 1 is cooled, and the material to be dried in the drying drum 2 is also cooled. After performing this circulation cooling process for, for example, 5 to 10 minutes, the first damper 22 opens the outside air inlet 21 that continues to introduce outside air into the intake path 8 under timer control, and the second damper 23 opens the outside air inlet 21 to continue introducing outside air into the intake path 8. While the outlet side of the cooling chamber 14 remains in communication with the cooling chamber 14, the third damper 24 is switched open and closed to communicate the outlet side of the cooling chamber 14 with the atmosphere through the exhaust air passage 19, and the heater 1[1 is Stop, intake passage 8
Outside air is supplied from the outside air inlet 21 to the drying chamber 1, and while the drying chamber 1 is cooled at the outside air temperature, it is cooled in the cooling chamber 14 and exhausted to the atmosphere from the outside air side exhaust passage 19, and the drying chamber 1 is deodorized and the exhaust air is The exhaust air is also cooled and the odor of the exhaust air is reduced. This deodorizing process is carried out for 1 minute, for example, and the entire drying process is completed.

In addition, when drying items to be dried such as washing with water without using a petroleum-based dry cleaning solvent, the first damper 22 opens the outside air inlet 21 that introduces outside air in the air intake path 8, and the second damper 23 The outlet side of the exhaust passage 6 is communicated with the exhaust air passage 19 at the second damper 23, and the introduction side of the intake passage 8 is closed at the second damper 23.

When steam is circulated through the steam pipe 9 of the heater 10 and the blower 5 is driven, the air heated by the heater 10 in the air intake path 8 is introduced into the drying chamber 1 and inside the rotating drying drum 2. The moisture adhering to the material to be dried is evaporated, and the evaporated moisture is exhausted to the atmosphere from the exhaust air passage 19 without passing through the cooling chamber 14 from the exhaust passage 6 together with the air. Since the exhaust air discharged into the atmosphere does not pass through the cooling chamber 14 in which the condenser I3 is disposed, the air passage resistance is small, the exhaust air flows smoothly, and the drying efficiency is increased.

Further, a temperature sensor 30 is provided in the exhaust passage 6 of the drying chamber 1, and when the temperature sensor 30 detects that the temperature of the exhaust air exhausted from the drying chamber 1 is higher than the set temperature, the temperature sensor 30 In response to the signal, the first damper 22 of the air inlet 21 is opened, and the outlet side of the cooling chamber 14 is switched, and the second damper 23 is switched so that the outlet side of the cooling chamber 14 is connected to the outside air outlet path 19. Make sure to communicate.

When the temperature sensor 30 detects a temperature rise above the set temperature during the solvent recovery circulation process, the outside air inlet 21 is opened and the third damper 24 on the outlet side of the cooling chamber 14 is switched to open the cooling chamber 14. The outlet side is the outside air side exhaust passage 19
The temperature of the drying chamber 1 is lowered and the temperature of the solvent vapor is lowered to prevent explosion. Then, after the outside air introduction stroke for a set time, the outside air introduction port 22 is closed, and the third damper 24 on the outlet side of the cooling chamber 14 is switched to communicate the outlet side of the cooling chamber 14 with the intake passage 8. When this solvent recovery circulation process waits for the set time, the outside air introduction process starts again, and after the solvent recovery circulation process and the outside air introduction process are alternately cycled, the deodorization process is performed after the above-mentioned cooling process. The entire drying process is completed.

In addition, a concentration sensor for detecting the concentration of solvent vapor is provided in place of the temperature sensor 30, and when a set concentration range in which the concentration of solvent vapor is likely to explode is detected, a signal from the concentration sensor is sent to the outside air inlet 2. It is also possible to open the cooling chamber 14 and switch the third damper 24 on the outlet side of the cooling chamber 14 so that the outlet side of the cooling chamber 14 communicates with the outside air side discharge passage 19.

When the concentration sensor 30 detects a set concentration range, for example, a concentration range of 1% to 6% of solvent vapor during the solvent recovery circulation process, the outside air inlet 21 is opened and the front air cooling chamber 14 is led out. The third damper 24 on the side is switched so that the outlet side of the cooling chamber 14 is communicated with the outside air side exhaust path 19, thereby lowering the temperature of the drying chamber 1 and diluting the concentration of solvent vapor.
Prevent explosion. Then, after the outside air introduction stroke for a set time, the outside air introduction port 21 is closed, and the third damper 24 is switched on the outlet side of the cooling chamber 14 to communicate the outlet side of the cooling chamber 14 with the intake passage 8. When this solvent recovery circulation process is carried out for a set time, the outside air introduction process starts again, and after the solvent recovery circulation process and the outside air introduction process are alternately cycled, the deodorization process is carried out after the cooling process described above. The drying process is completed.

Further, the inside of the cooling chamber 14 can be easily checked from the outside through the see-through window 28, and the cooling chamber such as the condenser can be easily maintained and inspected.

In the above embodiment, the condenser 13 of the cooling chamber 14 uses the cooling water pipe 12, but it is also possible to circulate water cooled by a cooler or other refrigerant.

〔Effect of the invention〕

According to the present invention, when drying items to be dried such as clothes washed by dry cleaning, air heated in the heating chamber is sent into the drying chamber to dry the items to be dried stored in the drying drum of the drying room. The contained solvent is evaporated and the water is evaporated, and the air containing this solvent vapor and water is sent to a cooling chamber, where it is cooled and the solvent vapor is liquefied and separated along with the water, and the cooled air is heated again. The air is heated in the chamber and sent to the drying chamber, and the air is sequentially circulated through the heating chamber, drying chamber, and cooling chamber, allowing for solvent recovery and drying, and is suitable for drying clothes that have been washed in water without using dry cleaning solvents. When drying items, change the damper, connect the exhaust air path to the outlet side of the exhaust path, and open the outside air inlet that introduces outside air into the intake path. Heated air is introduced into the drying chamber to evaporate the moisture contained in the material to be dried, and the air containing this evaporated moisture is passed from the exhaust duct to the atmosphere without passing through the cooling chamber. Since the exhaust air does not pass through the cooling chamber, there is little air path resistance, the heated air passes efficiently through the drying chamber, and drying is performed effectively.

[Brief explanation of the drawing]

The figure is a longitudinal sectional view of a drying device showing an embodiment of the present invention.

Claims (1)

[Claims] (1) A drying chamber in which a drying drum is installed, an exhaust path communicating with the exhaust port of the drying chamber and having a blower, an air intake path communicating with the air intake port of the drying chamber and having a heating chamber, and the exhaust path and the intake path. forming a solvent recovery circulation path with a cooling chamber that is connected in communication with the cooling chamber and communicating with the solvent recovery path; an exhaust air path opening to the atmosphere in parallel with the cooling chamber; Clothes, etc., characterized in that an open/closeable outside air inlet is provided in an intake path of the air passageway to introduce outside air, and a switching damper is provided on the outlet side of the exhaust path to selectively communicate the cooling chamber and the exhaust air path. drying equipment.