JPH09323000A - Clothings drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make inexpensive and compact the configuration of an air circulating/dehumidifying type clothings drying machine, to suppress the cost of tapped water, which is to be used as cooling water, without damaging dehumidifying ability, and further, to prolong the service life of a solenoid valve. SOLUTION: A unit 10 has a dehumidifying mechanism in water cooling structure for dehumidifying wet air passed inside a wet air passage 25 with cooling water stored in a cooling pipe 35. After a power source is turned on and a thermistor 48 receives a signal showing the temperature of warm air at 80 deg.C, when the other thermistor receives a signal showing the temperature of cooling water higher than 38 deg.C, this unit 10 outputs an instruction for opening the valve to a solenoid valve and, afterwards, when fresh cooling water is supplied to the cooling pipe 35 and its water temperature gets lower than 33 deg.C, an instruction for closing the solenoid valve is outputted to the valve.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air circulation type / dehumidifying type clothes dryer, and more particularly to a clothes dryer which adopts a water-cooling type dehumidifying mechanism and has a compact structure to improve drying efficiency.

[0002]

2. Description of the Related Art Generally, as a clothes dryer, an air circulation type / dehumidification type, a rotary drum type, and a bathroom clothes dryer are known.

[0003] Of these, bathroom clothes dryers have a long drying time and require a large amount of power consumption and the like, and are therefore disadvantageous in drying efficiency and economic efficiency as compared with dehumidification type and rotary drum types.

In addition, between the air circulation type / dehumidifying type and the rotating drum type, the rotating drum type has a problem that noise during operation is large and the temperature and humidity in the room rise abnormally. was there.

[0005]

As described above, in various conventional clothes dryers, the air circulation type / dehumidification type dryer is more efficient and economical than the bathroom clothes dryer or the rotary drum type dryer. It is excellent in performance, and the noise during operation is small, and it is possible to suppress the increase in indoor humidity,
Because it uses a heat pump system, it is expensive and
There was a drawback that the structure could not be made compact.

The present invention has been made in view of the above circumstances, and is an air circulation type / dehumidifying type clothes dryer, which has a low cost and a compact structure, and cools without impairing the dehumidifying ability. An object of the present invention is to provide a clothes dryer which suppresses the cost of using tap water used as water and extends the life of the solenoid valve.

[0007]

In order to achieve the above-mentioned object, the invention according to claim 1 installs a warm air / dehumidifying unit in the drying chamber, and the humid air in the drying chamber is provided in the humid air passage in the unit. In a clothes dryer that inhales and dehumidifies this moist air, and then blows warm air into the drying chamber to dehumidify and dry clothes in the drying chamber, the warm air / dehumidifying unit is provided on the front side of the housing in the drying chamber. The humid air suction port for sucking the humid air and the hot air outlet for blowing the warm air heated to a predetermined temperature into the drying chamber, and the humid air passing through the humid air passage are stored in the cooling pipe. Dehumidifying mechanism of water cooling structure that dehumidifies with the cooling water, a solenoid valve that supplies and shuts off tap water used as cooling water to the cooling pipe, and hot air that is installed at the hot air outlet and detects the hot air temperature. Temperature detection means, Serial installed in the cooling pipe, a water temperature detecting means for detecting the temperature of the first set temperature and a second set temperature for the water temperature of the cooling water, up to power,
And a solenoid valve control means for outputting an instruction to open the valve to the solenoid valve only after the warm air temperature detected by the warm air temperature detection means reaches a predetermined temperature or higher. .

According to a second aspect of the invention, in the first aspect of the invention, the solenoid valve control means turns on a power source,
When the temperature of the cooling water detected by the water temperature detection means reaches or exceeds the first set temperature after the warm air temperature detected by the warm air temperature detection means reaches a predetermined temperature or higher, When an instruction to open the valve is output to the valve and then new cooling water is supplied to the cooling pipe and the water temperature reaches the second set temperature or lower, the valve is opened to the solenoid valve. It is characterized by outputting an instruction to close.

Here, in the warm air / dehumidifying unit installed in the drying chamber, a humid air inlet is set on the lower side of the front side of the housing, and a warm air outlet is set on the upper side. The warm air fan installed in the room blows warm air heated to a predetermined temperature by the heater into the drying chamber, and the humid air that comes into contact with wet clothes is sucked into the housing through the humid air inlet to dry the air. Clothes are circulated to dry the clothes by dehumidification.

As the warm air fan, a small axial fan is suitable, and it is preferable for safe operation that a thermostat for preventing an excessive rise in temperature in the drying chamber is installed near the hot air outlet. As a heater, a PTC ceramic heater that requires almost no waiting time is preferable.

Next, the dehumidifying mechanism of the water cooling structure installed in the housing is composed of a water supply means, a dehumidifying section (heat exchange section) and a draining means. The water supplying means is from the water tap to the dehumidifying section. It consists of a water supply hose and a water supply pipe for supplying cooling water to the.

As the dehumidifying section, securing a large contact area with the moist air taken into the housing from the moist air suction port enhances the dehumidifying performance, so that the humid air passage (dehumidifying area) in the unit is A structure in which cooling pipes are arranged in a zigzag shape or along a desired pattern so that the cooling water is distributed with high density over the entire area, and a single flat cooling container for storing the cooling water or a passage It is conceivable to arrange a plurality of them in parallel.

The drainage means is composed of a condensed water tray for storing condensed water generated in the dehumidifying section and a drain hose for discharging the water to an external trap.

It is desirable that a thermistor is installed on the surface of the cooling pipe or the cooling container, and water is made to flow or stopped according to the signal so that the cooling water can be stored in a dehumidifying temperature range.

Here, both the water temperature detecting means and the warm air temperature detecting means may use thermistors.

The solenoid valve control means includes a relay for instructing the solenoid valve to open and close the valve and a CPU, and the thermistor for detecting the cooling water by the CPU.
An instruction to open / close the solenoid valve is output to the relay based on the detected temperature received from the thermistor that detects the temperature of warm air.

According to the present invention, the moist air in the drying chamber is taken into the unit through the moist air suction port, and the dehumidification mechanism of the water cooling structure is used for dew condensation to dehumidify the air. Compared to the machine, it can be downsized, the condensation efficiency can be improved, and the drying time can be shortened.

Further, since the dehumidifying mechanism of the water cooling structure is adopted, it suffices to bend the cooling pipe according to a desired pattern or set a flat cooling container, and to use an expensive heat pump or heat radiating fin. The structure can be simplified as compared with a complicated structure that requires such as.

Further, since the stored cooling water is supplied and drained based on the temperature of the cooling water stored in the cooling pipe, it is not necessary to constantly supply tap water.

Furthermore, the service life of the solenoid valve is improved because the solenoid valve is opened only after the power is turned on and the temperature of the hot air detected by the thermistor reaches or exceeds the predetermined temperature.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a clothes dryer according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an external view showing an embodiment of a hot air / dehumidifying unit used in the present invention, FIG. 2 is a vertical sectional view showing the structure of the hot air / dehumidifying unit, and FIG. 3 is the same hot air / dehumidifying unit. Partially cutaway side view of the unit, Fig. 4 is a block diagram showing the water supply / drainage control mechanism of the hot air / dehumidification unit, Fig. 5 is an operation explanatory view of the water supply / drainage control mechanism of the hot air / dehumidification unit, and Fig. 6 is a hot air / dehumidification unit. FIG. 7 is a flowchart showing the operation of the water supply / drainage control mechanism of the unit, FIG. 7 is a perspective view showing a state in which the hot air / dehumidifying unit is installed in a cabinet, and FIG. 8 is an explanatory view showing the operation of the clothes dryer according to the present invention. .

1 to 3, the hot air / dehumidifying unit 10 used in the present invention is replaced with an air cooling system such as a heat pump condensation plate to enable efficient dehumidification with cooling water, while the cooling water is used. For the storage of, the power is turned on, and after the warm air temperature reaches or exceeds the specified temperature,
The feature is that it is stored.

First, the overall structure of the warm air / dehumidifying unit will be described. The front side 20 of the unit housing 20.
At a (the side facing the drying chamber), the humid air inlet 21 is on the lower side and the warm air outlet 2 that blows warm air to the drying chamber is on the upper side.
2 is provided, an operation panel 23 is installed on the side surface 20b of the housing 20, a switch for setting the temperature of cooling water and the temperature of hot air detected by a thermistor described later, and a power ON switch on the surface thereof. , Various switches associated with the clothes drying operation such as an operation switch and a stop switch are provided.

On the rear side 20c of the housing 20,
A slider 24 for attaching the warm air / dehumidifying unit 10 to a cabinet not shown in FIG.
Articles are installed.

Next, the internal structure of the housing 20 will be described with reference to FIG. 2. A dehumidifying mechanism 30 having a water-cooling structure is built in the humid air passage 25 of the housing 20, and the housing is provided with the humid air suction port 21. The moist air sucked into the air 20 is passed through the dehumidification mechanism 30 to the hot air outlet 2
A warm air fan 26 and a warm air heater 27 are installed on the upper side of the housing 20 so as to circulate from 2 to the drying chamber, and a louver 22a for restricting the blowing direction of the warm air is installed at the warm air outlet 22. In addition, a thermistor 48 that detects the temperature of the hot air blown into the drying chamber is installed at the hot air outlet 22.

Next, the specific construction of the water-cooled dehumidifying mechanism 30 will be described with reference to FIGS. 2 and 3.

Here, the dehumidifying mechanism 30 is roughly composed of a storage means and a water supply / drainage means.

First, the storage means constituting the dehumidifying mechanism 30 is composed of three rows of cooling pipes 35 arranged in the pattern shown in the figure in the humid air passage 25 in the unit 10. Water is stored. A water temperature detecting thermistor 38 is installed in the approximate center of the cooling pipe 35, and the thermistor 38 detects the water temperature of the cooling water.

The arrangement pattern of the cooling pipes 35 is as follows.
It may have a shape that extends in a transcendental pattern to the left and right sides and sequentially shifts downward, or may be configured to extend in a transcendental pattern in the vertical direction and advance toward the left and right sides, respectively.

As described above, the shape of the cooling pipe 35 arranged in the humid air passage 25 has a high density in the humid air passage 25, that is, the cooling pipe so that a large contact area with the humid air can be secured. The length of 35 should be set as long as possible.

The water supply / drainage means supplies tap water to be used as cooling water to the cooling pipe 35, and a water supply hose 32 connected to a tap 31 for supplying tap water and the water supply hose 3
Water supply pipe 33 connected to the cooling pipe 35 via 2
It is composed of

The water supply / drainage means includes a condensed water receiving tray 36 for storing condensed water on the surface of the cooling pipe 35, and a drain hose 3 for discharging the cooling water stored in the cooling pipe 35.
7a and a drain hose 37b for draining the condensed water of the condensed water receiving tray 36.

That is, the water supply / drainage means is the drain hose 37a.
Drains to the drain trap through the cooling pipe 35.
The electromagnetic valve 39 is opened / closed by a signal from the water temperature detection thermistor 38 installed on the surface, and the hot water whose heat exchange is completed is discharged to the drain trap through the drain hose 37b, and new cooling water is introduced into the cooling pipe 35. It works.

Next, a control mechanism for supplying and discharging cooling water in the unit 10 will be described with reference to FIGS. 4 and 5.

As shown in the drawing, the water supply / drainage control mechanism detects the thermistor 38, a solenoid valve 39, a relay 41 for instructing the solenoid valve 39 to open the valve, and a hot air temperature of 80 ° C. It is composed of a thermistor 48 and a CPU 42.

Here, the water temperature detecting thermistor 38 is the first
38 ° C. as the set temperature of 33 and 33 as the second set temperature
It is designed to detect the temperature of cooling water at ℃.

The solenoid valve 39 is installed between the cooling pipe 35 and the drain hose 37a, and supplies and shuts off tap water to the cooling pipe 35 by opening and closing the valve.

The CPU 42 is stored in the cooling water 35 based on the temperature of the warm air detected by the thermistor 48 installed at the hot air outlet and the temperature of the cooling water detected by the thermistor 38 installed in the cooling pipe 35. The relay 41 is instructed to open and close the valve of the solenoid valve 39 in order to supply and drain the cooling water that is present.

As shown in FIG. 5, the water supply / drainage control mechanism turns on the power supply, and after the warm air temperature detected by the thermistor 48 reaches the temperature of 80 ° C. or higher, the CPU 4 is not operated for the first time.
2 relays to the solenoid valve 39 an instruction to open the valve.
1 is output.

The CPU 42 opens the valve to the solenoid valve 39 only after the warm air temperature reaches 80 ° C. or higher until the warm air temperature reaches 80 ° C. after the power is turned on. However, the amount of dew condensation water on the cooling pipe 35 is small due to the fact that only the energy for evaporation is given to the wet clothes, and the evaporation from the clothes is still small.

Therefore, during this time, it is not necessary to open the solenoid valve and supply the cooling water to the cooling pipe 35.

Further, in the water supply / drainage control mechanism, the temperature of the cooling water detected by the thermistor 38 is the first set temperature 38 after the hot air temperature reaches 80 ° C. or more after the power is turned on as described above. If it reaches over ℃, relay 41
A signal for opening the electromagnetic valve 39 is outputted to the relay pipe 41, and then, when new cooling water is supplied to the cooling pipe 35 and the water temperature becomes 33 ° C. or lower which is the second set temperature, the relay 41 A signal for closing the solenoid valve 39 is output.

Next, the operation of the water supply / drainage controller will be described with reference to the flowchart of FIG.

The warm air / dehumidifying unit 10 of this embodiment
Always turns on the power after turning on the power (step 110). If the power is off (step 110; N), the process is terminated while the power is turned on. If it is (step 110; Y)
The following processing is performed.

That is, when the power is ON (step 110; Y), the CPU 42 receives the warm air temperature detected by the thermistor 48 (step 120), and whether the received warm air temperature reaches 80 ° C. or higher. It is determined whether or not (step 130), and when the warm air temperature has not reached 80 ° C. or higher (step 130; N), it waits repeatedly until the warm air temperature reaches 80 ° C. or higher.

On the other hand, the CPU 42 once receives the temperature of 80 ° C. or higher (step 130;
Y), the water temperature of the cooling water detected by the thermistor 38 installed in the cooling pipe 35 is received (step 140).

The CPU 42 determines from the thermistor 38 whether or not the water temperature of the cooling water is at or above the first set temperature of 38 ° C. (step 150), and if the water temperature is at or above 38 ° C. (step 150; Y), the solenoid valve 39 is opened to supply tap water to the cooling pipe 35 (step 16).
0), if the cooling water is below 38 ° C (step 1
50; N), the process proceeds to step 140, and repeatedly waits until the water temperature of the cooling water reaches 38 ° C. or higher.

When the CPU 42 opens the solenoid valve 39 to supply the tap water to the cooling pipe 35 to lower the cooling water temperature, the CPU 42 again receives the cooling water temperature detected by the thermistor 38 (step 170). .

The CPU 42 determines whether or not the temperature of the cooling water from the thermistor 38 is equal to or lower than the second set temperature of 33 ° C. (step 180), and the received water temperature information is 33.
If the temperature is not lower than ℃ (step 180; N), the process proceeds to step 170, and while repeatedly waiting until the water temperature information reaches 33 ℃ or lower, if the information that the water temperature reaches 33 ℃ or lower is input, (Step 180; Y), solenoid valve 3
9 is closed, the supply of tap water to the cooling pipe 35 is stopped (step 190), the process proceeds to step 140, and the same processing as above is performed.

As described above, the solenoid valve 39 is opened only when the power is turned on and the temperature of the hot air detected by the thermistor 48 reaches, for example, 80 ° C. or higher. The opening / closing operation can be suppressed, and the service life of the solenoid valve 39 is improved.

When the temperature of the cooling pipe 35 is detected by the thermistor 38 and the surface temperature of the cooling pipe 35 reaches the first set temperature, the solenoid valve 39 is opened to drain the water in the cooling pipe 35 from the drain hose. The water is discharged to the outside through 37b, new cooling water is introduced from the water tap 31 into the cooling pipe 35 through the water supply hose 32 and the water supply pipe 33, and the temperature of the cooling water is lowered to reach the second set temperature. At this time, since the electromagnetic valve 39 is closed to stop the supply of tap water, no more tap water is needed, and the water charge is extremely small.

Since the hot air / dehumidifying unit 10 used in the present invention adopts the water cooling system in this way, it has a higher dehumidification efficiency than the conventional heat pump system or the dew condensation plate structure having the heat radiation fins. It is possible to shorten the drying time.

Further, as the driving fan installed in the housing 20, only the warm air fan 26 is required, and there is an advantage that the internal structure is simplified.

Next, with reference to FIGS. 7 and 8, the structure of the clothes hanging type clothes dryer 40 in which the warm air / dehumidifying unit 10 is installed in the drying chamber will be described.

As shown in FIG. 5, a cabinet 50 having a predetermined inner volume is vertically divided into two parts by a partition plate 51, and the upper space is a drying chamber A and the lower space is a washing machine containing a washing machine (not shown). It is divided into a machine housing chamber B, and a front door 52 is hinged to the front surface side so as to be able to open and close in a double door shape so as to seal the drying chamber A and the washing machine housing chamber B.

The warm air / dehumidifying unit 10 described above is housed and installed in the drying chamber A which is the upper space of the cabinet 50. The humid air suction port 21 and the warm air outlet 22 of the housing 20 are connected to the drying chamber A. The two sliders 24 provided on the rear surface side 20c of the housing 20 so as to face each other are attached to the guide rails provided on the inner surface of the side wall of the cabinet 50, whereby the warm air / dehumidification unit 1
0 can be easily slid in the drying chamber A of the cabinet 50.

Further, the front door 52 of this cabinet 50
Is provided with an opening 53 for exposing the operation panel 23 of the warm air / dehumidifying unit 10, and the present invention is a clothes hanging type clothes dryer 40.
A hanger device 54 is provided in the inside, and a commercially available hanger 56 with a wet clothes 55 hanging on the hanger device 54 is hung to dry the clothes.

Further, after the hot air / dehumidifying unit 10 is installed in the cabinet 50, the water supply hose 32 connected to the water supply plug 31 is attached to the water supply pipe 33 of the unit 10 to adjust the water supply.

Next, the operation of the clothes dryer 40 according to the present invention will be described with reference to FIG.

First, the clothes 55 which is wet by a commercially available hanger 56 is attached to the hanger device 54 installed in the drying chamber A.
After suspending, the front door 52 is closed and the operation panel 23
When the power switch, the operation switch, etc. are operated, the warm air fan 26 operates, and the warm air of the predetermined temperature by the warm air heater 27 is blown into the drying chamber A through the warm air outlet 22.

The warm air sent into the drying chamber A circulates in the drying chamber A to dehumidify the clothes, and the resulting humid air is the humid air installed at the lower part of the front side 20a of the housing 20. It is sucked into the housing 20 through the suction port 21.

Next, the moist air in the housing 20 comes into contact with the cooling pipe 35 arranged in the moist air passage 25,
Condensation is formed on the surface of the cooling pipe 35, and the condensed water is collected in the tray 36 and discharged to the drain trap through the drain hose 37a.

Further, the dry air dehumidified by the cooling pipe 35 is heated by the warm air fan 26 to a predetermined temperature through the warm air heater 27 and is again supplied from the warm air outlet 22 into the drying chamber A, and this air circulation is repeated. Damp clothes 55
Dehumidification is performed, and in particular, cooling water is intermittently fed into the cooling pipe 35, and efficient dehumidification is performed.

Thus, the clothes dryer 40 according to the present invention
Adopts a water-cooled hot air / dehumidification unit 10 instead of an air-cooled system such as a heat pump, which makes it possible to achieve a low-priced and compact structure, which greatly reduces costs, eases installation, and saves space. The effect is that you can contribute.

Further, by adopting the water cooling method instead of the air cooling method, there is an advantage that the dew condensation time can be shortened and the drying efficiency can be remarkably enhanced.

In addition, the clothes dryer 40 according to the present invention is
It quickly dehumidifies damp clothes and improves dew condensation efficiency, so humidity does not leak to the outside and the indoor humidity rises excessively as in conventional rotary drum dryers, which adversely affects the indoor environment. It is possible to effectively solve the problem of causing

In the embodiment described above, the warm air / dehumidifying unit 10 is installed in the cabinet 50. However, the usage form of the clothes dryer 40 is not limited to the above-described embodiment, and other than the cabinet 50. The warm air / dehumidifying unit 10 may be arbitrarily installed in the drying space of 1, and various variations are possible.

[0069]

As described above, the clothes dryer according to the present invention has the following effects.

(1) Since the moist air in the drying chamber is taken into the unit from the moist air suction port and dew is dewed by the dehumidifying mechanism of the water cooling structure, dehumidification is performed, so compared with the conventional air-cooling type dryer. In addition to miniaturization, the condensation efficiency can be improved and the drying time can be shortened.

(2) Since the dehumidifying mechanism of the water cooling structure is adopted, it is only necessary to bend the cooling pipe according to a desired pattern or set a flat cooling container. The structure can be simplified as compared with a complicated structure that requires fins or the like.

(3) Since the stored cooling water is supplied and drained based on the temperature of the cooling water stored in the cooling pipe, it is not necessary to constantly supply tap water, and the cost of using tap water can be reduced. You can

(4) Since the solenoid valve is opened only after the power source is turned on and the temperature of the hot air detected by the thermistor reaches or exceeds the predetermined temperature, the service life of the solenoid valve can be improved. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a warm air / dehumidifying unit used in a clothes dryer according to the present invention.

FIG. 2 is a vertical cross-sectional view showing the configuration of the warm air / dehumidifying unit shown in FIG.

FIG. 3 is an explanatory diagram showing a configuration of a dehumidifying mechanism in the warm air / dehumidifying unit shown in FIG.

FIG. 4 is a block diagram showing a water supply / drainage control mechanism of the warm air / dehumidification unit shown in FIG. 1.

5 is an operation explanatory view of the water supply / drainage control mechanism of the warm air / dehumidification unit shown in FIG.

6 is a flowchart showing the operation of the water supply / drainage control mechanism of the warm air / dehumidifying unit shown in FIG.

7 is a perspective view showing a state in which the warm air / dehumidifying unit shown in FIG. 1 is assembled in a cabinet.

FIG. 8 is a sectional view showing the operation of an embodiment of the clothes dryer according to the present invention.

[Explanation of symbols]

 10 Hot Air / Dehumidifying Unit 20 Housing 21 Wet Air Suction Port 22 Hot Air Blowout 25 Humid Air Passage 26 Hot Air Fan 27 Hot Air Heater 30 Dehumidifying Mechanism 35 Cooling Pipe 38 Thermistor 39 Solenoid Valve 40 Clothes Dryer 41 Relay 42 CPU 48 Thermistor 50 Cabinet 54 Hanger Device 55 Clothes 60 Cooling Container A Drying Room B Washing Machine Storage Room

Claims (2)

[Claims] 1. A warm air / dehumidifying unit is installed in a drying chamber, the humid air in the drying chamber is sucked into a humid air passage in the unit, the humid air is dehumidified, and then hot air is blown into the drying chamber. In the clothes dryer for dehumidifying and drying the clothes in the drying chamber, the warm air / dehumidifying unit includes a humid air suction port for sucking the humid air in the drying chamber on the front side of the housing and a warm air heated to a predetermined temperature. A dehumidifying mechanism having a water-cooling structure that dehumidifies the humid air that is formed by a hot air outlet that blows into the drying chamber and that passes through the humid air passage with the cooling water stored in the cooling pipe, and the cooling pipe as cooling water. A solenoid valve for supplying / shutting off tap water to be used, a warm air temperature detecting means for detecting a warm air temperature installed at the hot air outlet, and a cooling pipe installed for the cooling water. settings of Temperature and water temperature detecting means for detecting the water temperature at the second set temperature, and turning on the power supply, and after the warm air temperature detected by the warm air temperature detecting means reaches a predetermined temperature or higher, the electromagnetic valve is not connected to the solenoid valve. And a solenoid valve control means for outputting an instruction to open the valve. 2. The solenoid valve control means turns on a power source, and after the hot air temperature detected by the hot air temperature detection means reaches a predetermined temperature or higher, the cooling water detected by the water temperature detection means is detected. When the water temperature reaches or exceeds the first set temperature, an instruction to open the solenoid valve is output,
Thereafter, when new cooling water is supplied to the cooling pipe and the temperature of the cooling water reaches the second preset temperature or lower, an instruction to close the valve is output to the solenoid valve. 1. The clothes dryer according to 1.