JPS60119993A - Clothing 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 dehumidifying type clothes dryer which is designed to save energy, reduce air flow, and improve efficiency.

Structure of a conventional example and its problems A conventional dehumidifying type clothes dryer is shown in FIGS. 1 and 2. Reference numeral 1 denotes a dryer main body, 2 a rotatable clothes storage cabinet (hereinafter referred to as a drum) driven by a motor 3 via a drum belt 4, and 6 a clothes input port provided on the front side of the dryer main body 1. , 6 are heaters for heating the drying air blown into the drum 2. 7 is a heat exchange fan installed on the back side of the dryer main body 1, and includes a wave-shaped grade 9 with grooves arranged almost radially from u8 while rotating, and an inner circumferential plate 10 provided on the inner and outer peripheries of the blades 9. and an outer peripheral plate 11, and the heat conversion fan 17 is connected to the fan belt 1 by the motor 3.
2. Reference numeral 13 denotes a casing of the heat exchange fan 7, which has a drying air intake port 14 in the center. 16 is a drying air outlet. A holding plate 16 holds the heat exchange fan 7 and the casing 13. 17.1
Reference numerals 8 denote cooling air intake and exhaust ports provided on the back plate 19. Reference numeral 20 denotes a circulating wind cylinder, one end of which communicates with the drying air outlet 16, and the other end of which communicates with the intake side of the heater 6. Circulating wind cylinder 20. The drum 2 and the heat exchange fan 7 constitute a drying air path. On the other hand, cooling air is taken in through the intake port 17, passes through the heat exchange nozzle 7, and is exhausted from the exhaust port 18, forming a cooling air path. 21 is the heat 9. in the heat conversion fan 7. This is an outlet for discharging dehumidified water that has been dehumidified from the drying air by evaporation. 22 and 23 indicate the flows of drying air and cooling air, respectively.

- The operation of the conventional clothes dryer configured as described above will be explained below. When the power is turned on, the motor 3 is driven to rotate the drum 2 containing clothes, and the heat exchange fan 7 to rotate. Also, the heater 6 is energized, and the heated drying air evaporates the moisture in the clothes, and the hot and humid drying air passes through the intake port 14 and is sucked into the heat exchange fan 7. Cooling air is taken into the opposite side of the heat exchange fan 7 through the intake port 17, and heat is exchanged between the two through the blades 9. At this time, the drying air is cooled and dehumidified.

This dehumidified water is discharged to the outside of the main body 1 through the drain port 21. The dehumidified drying air 22 is sent through the circulating air cylinder 20 to the heater 6, where it is heated again and blown into the drum 2. In this way, the drying air is circulated. On the other hand, the cooling air 23 is heat-exchanged and heated by the heat conversion fan 7, and is then exhausted to the outside of the machine from the exhaust port 18.

In the conventional clothes dryer described above, the dryer air has a temperature of about 60° C. at the drying air outlet 16 of the heat exchange fan 7. The temperature inside the dryer body 1 is approximately 30
The drying air 22 is cooled considerably before it passes through the circulating air cylinder 20 and reaches the heater 6, and this amount of heat heats the dryer main body 1 and is discarded outside the machine. The temperature after passing through the heater, that is, the temperature of the drying air sent into the drum 2, is low, and the speed of evaporation of water from the clothes is slow, resulting in a long drying time. Since the clothes are cooled, there is a problem in that the effective amount of heat that acts on the evaporation of moisture in the clothes is small relative to the input heater input, resulting in poor efficiency.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional drawbacks, the present invention provides a dehumidifying type clothes dryer with good thermal efficiency and short drying time.

Structure of the Invention The clothes dryer of the present invention has a drying air path consisting of a clothes storage and a circulating air cylinder containing a heating element, a cooling air path, and a heat exchange fan having corrugated blades. By providing the circulating air flow in the clothes storage and communicating one end with the drying air outlet of the heat exchange fan, loss due to heat radiation of the drying air passing through the circulating air is reduced. This makes it possible to improve efficiency and shorten drying time.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Components having the same configuration as the conventional example are marked with the same symbol and detailed description thereof will be omitted. To explain the differences, reference numeral 26 is a circulating air passage protruding from inside the drum 2, one end of which communicates with the drying air outlet 16, and the other end of which is connected to a heater 26.
It contains. This circulating wind +1. il 25 is mounted on the inner surface of the casing 13, and is attached to the drum 2.
Approximately the center V of the inside: The heated fan side of the layer A to Hiroshi F ram 2 is supported around the casing 13 and rotates.
It is.

The operation of the clothes dryer configured as above will be explained below. When the power is turned on, the motor 3 is driven, the drum 2 and the heat exchange fan 7 rotate, and the heater 2
A telephone line is located at 6. At constant rate drying, high temperature (approximately 55°
The drying air 22 in C) is taken in by the heat exchange fan 7, and the cooling air 23 at room temperature is taken in from the intake port 17 to the other side of the heat exchange fan 7, and both are separated by grade 9 and are heated. Make an exchange. At this time, the cooling air 23 is heated and then exhausted from the exhaust port 18 to the outside of the machine. On the other hand, the drying air 22 is cooled and the dehumidified water t1 is drained out of the machine through the drain port 21. Drying air after cooling and dehumidification 22Vi
The temperature reaches approximately 55° Cm, flows through the drying air outlet 15 in the circulating air 11+++ 125, is heated by the heater 26, and is blown onto the drum 2 again.

Conventionally, when the drying air 22 flows through the circulating wind barrel 26, it passes outside the drum 2, which has a low temperature (approximately 30"C) inside the dryer main body 1, resulting in large heat radiation loss, but the present invention In the embodiment, the amount of heat radiated when circulating the paper i times 26 is released into the drum 2 and used to heat the clothes, so there is no loss. 2, all of the heat is released into the drum, and there is no loss due to conduction or heat radiation.For this reason, the ratio of heat that effectively acts on drying clothes to the input heater input is almost 100%. It can be done.

Furthermore, since there is no heat radiation loss, the temperature inside the drum 2 rises, and the speed of evaporation of water from the cloth increases, which has the effect of shortening the drying time. Furthermore, this embodiment eliminates the need for the space required to provide the circulating air direction outside the drum as in the prior art, making it possible to reduce the total size of the island and further improve usability.

Effects of the Invention As described above, the present invention provides circulating air for a dehumidifying clothes dryer.
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[Brief explanation of drawings]

FIG. 1 is a side sectional view of a conventional clothes dryer, FIG. 2 is a perspective view of a heat exchange fan, and FIG. 3 is a side sectional view of a clothes dryer according to an embodiment of the present invention. 1... Dryer body, 2... Clothes storage, 7... Heat exchange fan, 16... Heater, 24... For drying Air outlet, 25...
Circulating wind trunk. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
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Claims (1)

[Claims] A drying air path consisting of a clothes storage and a circulation air cylinder containing a heater; a cooling air path for guiding cooling air that cools the drying air in the drying air path; It is equipped with a heat exchange fan that airtightly separates a drying air path and a cooling air path, and the *ring air flow 1 is provided in the clothes storage and is communicated with the drying air outlet of the heat exchange fan. Clothes dryer.