JPS6034496A - Clothes dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a clothes dryer for general household use.

Conventional structure and problems Conventionally, this type of clothes dryer has been divided into an open type clothes dryer called a duct type as shown in Fig. 1, and a dehumidifying type clothes dryer as shown in Fig. 2. be. An open type clothes dryer is generally equipped with a clothes storage 1 for storing clothes, a heating element 3 for applying heat to the drying air 2, and a fan 6 driven by a motor 4 to blow the drying air 2. After the dry air 2 is taken in from outside the machine and heated, it absorbs moisture from the clothes to be dried and is discharged outside the machine again. However, the dry air released from the dryer is about 15 degrees Celsius higher than the ambient temperature and contains a large amount of moisture, so it is not suitable for indoor use, and duct construction is required to lead and release the dry air outdoors. Furthermore, the dry air that is released contains its own sensible heat and latent heat of vaporization of about 600 KcalV/hr, making it extremely uneconomical. On the other hand, in the dehumidifying clothes dryer shown in FIG. An exchange type blower 7, a circulation path 10 that guides dry air 2, and a heat exchange type blower 7 that takes in cooling air 6 from outside the machine.
1, and the heated dry air 2, which has removed moisture from the clothes, is passed through the blades 8 of the heat exchange type blower into the cooling air. The condensed water generated when heat is exchanged with the dry air is discharged outside the machine from the drain port 9. However, in this configuration, when the cooling air exchanges heat with the dry air, the condensed water is approximately 400Kc.
Since condensation heat of more than al/hr is received and released to the outside of the machine, there is a problem that there is a large amount of waste, and at the same time, the indoor temperature rises, causing discomfort. Although a clothes dryer equipped with a heat exchange type blower was mentioned as a conventional example of a dehumidifying clothes dryer, the same applies to a clothes dryer equipped with a heat exchanger and a fan that blows dry air and cooling air separately. There is a problem.

Purpose of the Invention The present invention solves these conventional problems, and provides simple dehumidification that minimizes the release of moisture outside the dryer by providing a heat storage material in the dry air circulation path. The energy saving effect is achieved by recovering the latent heat of vaporization required to evaporate water from the clothes being dried and reusing it to heat the drying air.
The room temperature is above.

Structure of the Invention The clothes dryer of the present invention includes a heating element that heats drying air, a clothes storage that stores clothes to be dried, a fan that circulates the drying air, and a circulation system that guides the drying air to the clothes storage. It is equipped with a path and a heat storage material provided in this circulation path.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 3 and 4, 2° is a heat storage material such as wax, which includes a heating body 21, a clothing storage 23 driven by a motor 22, and a clothing storage 23 that is rotated by the motor 22 via a belt 24 to circulate dry air 25. It is provided in a circulation path 40 that connects the 77 channels 26 and 26. As an example of the heat storage material 2o, a latent heat storage material of an inorganic hydrated salt mainly composed of sodium acetate trihydrate, rhidium chloride hexahydrate, etc. is suitable. 2 denotes a heat storage material storage section that contains and holds the heat storage material 20; 28 denotes a spiral heat radiation fin embedded in the circulation path wall 29 to promote heat exchange between the dry air 25 and the heat storage material 20; 3;
Q is a drain port for discharging condensed water that is generated when dry air 25 is deprived of heat by heat storage material 20, and 31 is heat storage material 2.
The opening/closing part is located on the inflow side 32 of dry air with respect to 0, and converts the circulation path 40 from a closed circuit to an open circuit by rotating a shielding plate 33 that is pivoted at the center. This operation may be automatic or manual. 34 indicates the position of the shielding plate 33 when the circulation path 4o is converted to an open circuit, and 35 indicates the flow of intake and exhaust of dry air at this time. 36 is a dry air inlet, 3 is a dry air outlet, 38 is a casing containing the fan 26, and 39 is a main body of the dryer.

To explain the operation in the above configuration, if the opening/closing part 31 is in the state shown in the figure, the circulation path 40 becomes a closed circuit, and the dry air blown by the fan 26 is given heat by the heating element 21 and the clothes storage compartment 23 is heated. flows into. The heat of the dry air that has taken moisture from the clothes to be dried is absorbed by the heat storage material 20, where the moisture that has been taken from the clothes is released as condensed water.
After that, the process of moving toward the heating element 21 again is repeated nine times. Clothes are dried by repeating this process. In this drying process, the heat storage material 2o receives and stores the sensible heat of the drying air and a large amount of latent heat of condensation, so there is no heat release outside the machine as in the conventional case, and the moisture taken from the clothes is transferred to the machine in the form of condensed water. Since the water is drained outside, moisture is not radiated indoors. On the other hand, in the latter half of the drying process, the so-called lapse rate drying period occurs in which the diffusion rate of water vapor inside the clothing ridge cannot keep up with the diffusion rate of water vapor in the outer layer, and the drying speed of the clothing as a whole decreases. The water content of is already below 10q6. By the way, by detecting the electrical resistance of clothing, you can easily know when the lapse rate is drying. Here, if the shielding plate 33 of the opening/closing part 31 is automatically or manually rotated to the position 34 to convert the circulation path 4o from a closed circuit to an open circuit, and at the same time throttle or stop the input to the heating element 21, drying is possible. Indoor air flows from the air intake port 36 to dry air 3
It flows in as 6. However, although the temperature of this dry air is lower than the dry air temperature when the circulation path 40 is a closed circuit, the heat currently stored in the heat storage material 20 in the trench is released, so the input to the heating element 21 is Even if the amount is decreased, the drying air will be heated in the same way, and drying of clothes will proceed under open circuit conditions.

In other words, a large amount of condensation heat that was conventionally released outside the machine is recovered and reused, resulting in a large energy saving effect.

In addition, although the example shows the case where the opening/closing part 31 is provided in the circulation path 4o, even if the opening/closing part 31 is not provided, the heat storage material 20
is fully effective.

Effects of the Invention As is clear from the above embodiments, the clothes dryer of the present invention is equipped with a heat storage material in the dry air circulation path, so that the release of moisture to the outside of the dryer can be minimized. In addition to simple dehumidification, an energy-saving effect was obtained by recovering the latent heat of vaporization and reusing it to heat the dry air, and it was possible to prevent the room temperature from rising due to the waste heat.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional duct type clothes dryer;
The figure is a cross-sectional view of a conventional dehumidifying clothes dryer.
The figure is an enlarged sectional view of the same main part. 20... Heat storage material, 21... Heating body, 2
3...Clothing storage, 25...Dry air, 26...Fan, 40...Circulation route. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 7

Claims (2)

[Claims] (1) A heating element that heats dry air, a clothes storage that stores clothes to be dried, and a fan that circulates dry air;
A clothes dryer comprising a circulation path for guiding the dry air to a clothes storage, and a heat storage material provided in the circulation path. (2) The clothes dryer according to claim 1, wherein the circulation path has an opening/closing part on the dry air inflow side with respect to the heat storage material, and the circuit of the circulation path is changed.