JPS6080497A - 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] Industrial applications The present invention relates to a dryer for general household use.

Conventional Structures and Problems Therebelow, a commonly used dryer will be described with reference to FIG. 1, taking a clothes dryer as an example.

1 is an outer box, 2 is a rotating dome for storing and drying clothes, 3 is
1d, the motor transmits rotation to the circulation fan 6 and the cooling fan 7 via the round belt 4 and fan wheelie 6,
The rotating drum 2 and the circulation fan 6 are connected by a duct 8. 9 is a heater with positive temperature characteristics that gives heat to the air from the circulation fan 6 (hereinafter referred to as P, T, and C heaters); 10 is a heat exchanger; the central part has a copper pipe through which the air from the circulation fan 6 passes; A plurality of copper pipes 11 are formed, and aluminum fins 12 are provided around the copper pipes 11 to enhance the cooling effect thereof.

Next, the operation in the above configuration will be explained.

First, when the motor 3 rotates, the fan pulley 5 rotates via the round belt 4, and the cooling fan 7, which is supported on the same axis as the fan pulley 5, rotates. When the cooling fan 7 rotates, outside air is sucked through the intake hole (not shown) and guided to the heat exchanger 1g10, thereby cooling the aluminum fins 12.

On the other hand, the circulation fan 6 , which is supported on the same axis as the cooling fan 7 , also rotates, and the air inside the rotating drum 2 is sucked through the duct 8 , and this air passes through the copper vibe 11 of the heat exchanger 10 . It is cooled and dehumidified at the same time. The dehumidified air is heated as it passes through the P, T, and C heaters 9, and is supplied to the rotating drum 2 as hot air.

The hot air supplied into the rotating drum 2 comes into contact with damp clothing, causing water'? The hot air containing a lot of water/; , T, C After being heated by the heater 9, it is supplied to the rotating drum 2.

1. Clothes can be roughly divided into two types: synthetic fibers and cotton. Synthetic fibers are relatively heat-resistant and hydrophobic clothing, so when a full dehydrator is used, the dehydration rate is much higher than that of cotton. Therefore, in the past, a switch was installed to switch the P, T, and C heaters 9 between high and low.In the case of synthetic fibers, use low, and in the case of cotton, use high because it is resistant to heat and is a harmonious garment. It had been.

However, switching between strong and weak was performed by energizing all or half of the P, T, and C heaters 9, so in the case of weak operation, only half of the P'r and C heaters 9 were energized. Despite the fact that (IiIi Ring Fan 6
Since the circulating air passes over the entire surface of the PTC heater 9, there is a large temperature difference between the energized part and the non-energized part, resulting in severe thermal expansion and contraction, which has a negative effect on the P, T, and C heaters 9 themselves. I was giving money.

In addition, the circulating air by the circulation fan 6 during weak operation is P,
T, C heater 9 non-energized portion 4. Since the air also passes through the rotating drum 2, the temperature inside the rotating drum 2 inevitably becomes low, and furthermore, the temperature difference between the circulating air inside the copper pipe 11 in the heat exchanger 10 and the cooling air outside the copper pipe 11 is small. As a result, the dehumidification efficiency decreased, and even with high dehydration rate synthetic fibers, the drying time was longer than necessary.

Furthermore, when the amount of clothes put into the rotating drum 2 is small, the amount of circulating air is large (if the amount of heat generated by the P, T, and C heaters 9 is large, the clothes and hot air in the rotating drum 2 are in sufficient contact with each other). The water passed through the heat exchanger without being sufficiently concentrated, resulting in extremely poor thermal efficiency.

OBJECTS OF THE INVENTION In view of the above problems, the present invention provides an efficient dryer.

Structure of the Invention The dryer of the present invention includes a rotatable drum that stores and dries materials to be dried, a heat exchanger that dehumidifies the air in the rotary drum, and a dryer that guides all of the air from the heat exchanger to the rotary drum. It consists of P, T, and C heaters installed in the passage, a νIS ring fan that guides the air from the rotating drum to the heat exchanger, and a movable shield plate that regulates the flow rate of the air. By adjusting all of the shielding plates according to the quality, the flow rate of air is fully regulated.By regulating the amount of air passing through the P, T, and C heaters, the amount of heat generated by the P, T, and C heaters is changed, making it efficient. It provides a dryer.

DESCRIPTION OF EMBODIMENTS A dryer which is an embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

13 is the rotating drum 2 of the heat exchanger IK1o shown in FIG.
The airflow passing through P1 heats this airflow P, T,
C heater, 1J-j KonoP, T, Chi, -p -13
This is a shielding plate that regulates the amount of air flowing into the air conditioner, and is provided so that it can be rotated by rotating the handle 15. 16
is a hole provided in the shielding plate 14.

The operation in the above configuration will be explained below.

In the case of strong operation for drying wood R1j, if the shielding plate 14 is fully opened as shown by the broken line in Fig. 3 to maximize the air flow, the amount of air passing through the P, T, and C heaters 13 will also increase. Become the maximum, ii,! iThe larger the amount of air that passes through, the greater the amount of heat generated, and the smaller the R: of the air that passes, the smaller the amount of heat generated.P, T, C Due to the characteristics of the heater, P,
After the T and C heaters 13 reach their maximum calorific value, in the case of weak operation to dry heat-sensitive and hydrophobic synthetic fibers, if the shielding plate 14 is completely shielded as shown by the solid line in Figure 3, the circulation will be reduced. The airflow caused by the fan 6 is very small since it only flows through the plurality of holes 16 provided in the shielding plate 14. However, the P, T, and C heaters 13 are fully energized.
The whole thing gets hot. Furthermore, if the amount of air passing through the P, T, C heaters 13 is small, the amount of heat generated will also be reduced due to the characteristics of the P, T, C heaters described above. :) If you use low operation, the amount of air being circulated will be reduced compared to high operation, but the temperature of that air will not drop much, and when it comes into contact with the clothes in the rotating drum 2, all of the moisture will be completely destroyed. Since the temperature difference between the heat exchanger 1o and the cooling air outside the copper pipe 11 is sufficient, the heat exchanger 1o is sufficiently cooled and dehumidified.

From the above, if you experimentally determine in advance the amount of circulating air when drying only synthetic fibers and the amount of circulating air when drying only cotton, and then set the shielding plate 140 at all angles in step 4, you can always achieve maximum dehumidification. In addition to being able to earn money efficiently, P
, T, C heater 13 also generates heat as a whole, so P, T
, There is no temperature difference within the G heater 13, and there are no adverse effects due to thermal expansion or contraction.

Furthermore, if there are few clothes in the rotating drum 2, the amount of circulating air can be reduced by the shielding plate 14, so that the clothes and the hot air are in sufficient contact with each other in the rotating drum 2, and the temperature difference between the heat exchanger 1o and the cooling air can also be increased. is sufficient, improving dehumidification efficiency.

It goes without saying that the amount of circulating air may be regulated by a circulation fan without using the shielding plate 14.

Effects of the Invention As is clear from the description of the above embodiments, the dryer of the present invention adjusts the amount of circulating 4 air and the amount of P, T, and C heaters depending on the quality and quantity of the material to be dried in the rotating drum. By controlling the amount of heat generated, drying can be carried out very efficiently.

[Brief explanation of drawings]

FIG. 1 is a partially sectional perspective view of a general dryer, FIG. 2 is a perspective view of a dryer according to an embodiment of the present invention, and FIG. 3 is an enlarged view of the same portion.

Claims (2)

[Claims] (1) A freely rotatable rotating drum that stores and dries all of the materials to be dried, a heat exchanger that completely dehumidifies the air within this rotating drum, and a positive temperature control provided in a passage that leads the air from this heat exchanger to the rotating drum. 1. A dryer comprising: a heater having special characteristics; a circulation fan that guides air from the rotating drum to the heat exchanger; and an air flow rate regulating means that regulates the flow rate of the air. (2) When looking at the air flow rate regulating means from the air flow, P, T,
The dryer according to claim 1, wherein a shielding plate is provided on the upstream side of the C heater.