JPH0454480B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dehumidifying clothes dryer for use in general households.

Conventional configuration and problems The conventional clothes drying method in a clothes dryer involves rotating a rotating drum to agitate the clothes, sending hot air into the rotating drum, and exhausting the damp air to the outside after drying the clothes. So-called exhaust type,
There have been two main types of dehumidification, in which circulating hot air is sent into a rotating drum, and the damp air after drying the clothes is cooled and dehumidified by outside air using a heat exchanger with aluminum fins.

The former method has the drawback of exhausting humid air into the room, causing dew condensation on walls and the like, and also causing discomfort to the body. Although the latter does not have the disadvantages of the former, it does have the disadvantage of being expensive because it uses a heat exchanger with aluminum fins.

Purpose of the Invention The present invention eliminates the above-mentioned drawbacks of the conventional technology, and eliminates condensation on walls and discomfort to the body.
Furthermore, the present invention provides a dehumidifying type clothes dryer that has a simple structure, reliable dehumidifying ability, durability, and safety.

Structure of the Invention In order to achieve the above object, the present invention has the following features:
One part of the drum is opened and closed by a door, and the other part has an exhaust hole with a filter, and includes a rotating drum that rolls and agitates the clothes put inside, and a rotating drum that is used for exhausting air from the rotating drum. A plastic double-winged fan arranged corresponding to the through-hole and having two air flow systems, a rotating drum, a motor for rotationally driving the double-winged fan, an internal space of the rotating drum, an exhaust through-hole, and both wings. a circulation path including one air flow system of the fan, a cooling path including another air flow system of the rotating drum and communicating with outside air, a heater disposed in the circulation path, and a cooling path of the rotating drum in the circulation path. A thermostat is located between the exhaust hole and the suction side of both wing fans and detects the temperature of the circulating air flow to control the energization of the heater, and the thermostat is sealed with a moisture-proof material. In particular, the thermostat that controls the energization of the heater is located between the exhaust hole of the rotating drum and the suction side of both wing fans.
Although the fans on both sides are made of plastic and have a thinner wall to improve heat exchange performance, there is no risk of thermal deformation and the air can be reliably blown, and the temperature control thermostat is moisture-proof even though it comes into contact with high temperature and high humidity. A new dehumidifying type clothes dryer that is sealed inside the body and has moisture-proof treatment, so there is no risk of condensation on the thermostat surface or corrosion of the contacts.It has a simple structure, and has excellent dehumidifying ability, durability, and safety. We can provide equipment.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In Figure 1, 1 is the body of the clothes dryer, 2
is a rotating drum, which is driven by a motor 3 via a belt 4 and a pulley 5. Reference numeral 6 denotes a double-winged plastic fan, which is driven via a belt 7 and pulleys 8 and 9. 10 is a filter disposed inside the rear wall of the rotating drum 2, and 11 is a filter cover that covers the filter 10 to capture dust on clothes. Reference numeral 12 denotes a door, which is opened and closed to throw clothes into the rotating drum 12. A heater 13 heats the air sucked into the rotating drum 2. Reference numeral 14 denotes a temperature regulating thermostat, which is attached to the support member so as to be close to the humid air intake of the double-winged fan 6, that is, the through hole 2a in the back wall of the rotating drum 2. The temperature control thermostat 14 operates to detect a predetermined temperature of the circulating air and stop supplying electricity to the heater 13, thereby preventing overdrying. 15 is a time switch, 16 is a fan case, 17 is a sliding seal on the outer periphery of both wing fans 6,
Circulating air a and cooling air b are kept from mixing.

18 is a drain port, and 19 is a back plate.

FIG. 3 shows the specific structure of the temperature regulating thermostat 14, in which 20 is a lead wire, 21 is a vinyl tube which is a moisture barrier, both ends 21a of which are high frequency welded, and the temperature regulating thermostat 14 therein is is sealed.

The operation in the above configuration will be explained. Power supply 100V,
Heater 13 capacity 1200W, circulation air volume ^1.5m3 /min,
When using the clothes dryer according to this embodiment with a cooling air volume of 2 m ³ /min and a drying capacity of 2 kg (drying cloth), the temperature control thermostat 14 is used when ordinary cotton underwear and towels are washed, dehydrated, and then dried. Temperature Tt of A
FIG. 2 shows the relationship between this and the temperature Te at the outlet of the circulating air fan of the fan case 16, indicated by B in the figure.

As shown in Figure 2, the temperature Tt of part A reaches approximately 50°C (when the room temperature is 20°C) in about 10 minutes from the start of drying, and then remains at 50°C for 70 to 80 minutes, causing the clothes to dry. As it dries, the temperature gradually rises to 60-70℃. On the other hand, the temperature at the outlet B of both wing fans 6
The temperature of Te reaches approximately 40°C in about 10 minutes from the start of drying and remains at that temperature for 70 to 80 minutes thereafter. Then, as the clothes begin to dry, the temperature Te of part B begins to gradually decrease, contrary to part A. Therefore, it can be seen that in order to protect the temperature of both wing fans 6, it is most suitable to control the temperature in the A portion.

The humidity of the circulating air a is the highest in the section A during operation, always reaching the dew point.Therefore, the temperature control thermostat 14 is sealed with a moisture-proof body made of a vinyl tube 21 for moisture-proofing.

In addition, the off temperature setting of the temperature control thermostat is
The temperature may be determined depending on the material of the double-winged plastic fan 6, but for example, in the case of polypropylene, 70 to 75°C is optimal based on experimental results.

Effects of the Invention As is clear from the above embodiments, according to the present invention, a plastic double-winged fan can be protected at a temperature at which it will not be thermally deformed by the dryness detection operation of the temperature control thermostat installed at the most appropriate position. As a result, it is possible to form ultra-thin walls of 0.8 to 1 mm, and heat exchange between circulating air and cooling air can be performed reliably and efficiently with a single fan.
Moreover, even though the temperature control thermostat may come into contact with high temperature and high humidity, since it is sealed inside a moisture-proof body, there is no risk of condensation forming on the temperature control thermostat or corroding the contacts.
It is possible to provide a clothes dryer that has a simpler structure than conventional ones and has excellent dehumidifying ability, durability, and safety.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a diagram showing temperature changes along the path of circulating air, and FIG. 3 is a side view showing details of a temperature control thermostat. . 1...Body, 2...Rotating drum, 3...Motor, 6...Plastic double-winged fan, 13...
... Heater, 14 ... Temperature control thermostat, 1
6...Fan case, 21...Vinyl tube (moisture proof body).

Claims (1)

[Claims] 1 A part is opened and closed by a door, and
The other part has an exhaust hole with a filter, which corresponds to the rotating drum that rolls and stirs the clothes put inside, and the exhaust hole of the rotating drum. A plastic double-winged fan having an air flow system, a rotating drum, a motor for rotationally driving the double-winged fan, an internal space of the rotating drum, an exhaust hole, and a circulation path including an air flow system of the double-winged fan; a cooling path including another air flow system of the rotating drum and communicating with outside air;
The heater is located in the circulation path, and is located between the exhaust hole of the rotary drum and the suction side of the double-winged fan in the circulation path, and controls the energization of the heater by detecting the temperature of the circulating air flow. The clothes dryer is equipped with a thermostat, and the thermostat is sealed with a moisture-proof body.