JPH0484996A - Operating system for clothing drier - Google Patents

Abstract

PURPOSE:To improve the scavenging efficiency of an electrostatic filter by decreasing the wind speed of cool wind to be supplied to the electrostatic filter in the middle way of a cooling process by providing a drying process to dry a material to be dried by supplying warm air in a rotary drum, and the cooling process to cool the material to be dried by supplying the cool air in the rotary drum after completing the drying process. CONSTITUTION:A drum 1 and a two-blade fan 9 are formed so as to be driven with one motor 15 via a drum belt 16 and a fan belt 17, respectively. The air is circulated and heated on the route of a duct 12 a heater 14 the drum 1 a filter cover 6 a filter 7 an exhaust port 8 by the rotation of the two- blade fan 9, which heats clothing in the drum 1, and evaporates a water component. Meanwhile, the two-blade fan 9 cools and dehumidifies the warm air passing the exhaust port 8 by fetching the outside air on a plane opposite to the drum 1 and exhausting it. Condensed water is exhausted from a drain port 13 provided at the lower part of a duct 2 to the outside the machine. Thereby, since the air flow speed of the cool air supplied to the electrostatic filter can be reduced on the middle way of the cooling process, the scavenging efficiency of the electrostatic filter can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a dehumidifying clothes dryer mainly used in general households.

(B) Prior art In this type of conventional clothes dryer, the items to be dried are stored in a rotating drum, hot air or cold air is selectively supplied to the rotating drum, and an electrostatic charge is applied to the air outlet of the rotating drum. A filter is installed to collect fine dust from the dried material.

(c) Problems to be solved by the invention However, in order to shorten the drying operation time, the volume of air supplied to the material to be dried is set high, so the speed of hot air passing through the filter is high, and the collection efficiency of the filter is increased. The problem was that it was bad.

This invention was made in consideration of these circumstances,
The present invention provides an operating system for a clothes dryer that improves the collection efficiency of a filter by reducing the amount of air supplied to the items to be dried in the cooling process after the drying process.

(d) Means for Solving the Problems This invention accommodates the material to be dried in a rotating drum, selectively supplies hot air or cold air to the rotating drum, and provides an electrostatic filter at the air outlet of the rotating drum. In the operation method of a clothes dryer that collects fine dust from the items to be dried, there is a drying process in which hot air is supplied into the rotating drum to dry the items to be dried, and a drying process in which hot air is supplied into the rotating drum to dry the items to be dried. A garment comprising a cooling process of supplying cold air to cool the material to be dried, and characterized by reducing the speed of the cold air supplied to the electrostatic filter during the cooling process to improve the collection efficiency of the electrostatic filter. This is the operating method of the dryer.

(e) Effect Since the speed of cold air supplied to the electrostatic filter during the cooling process is reduced, the collection efficiency of the electrostatic filter is improved.

(f) Examples Hereinafter, the present invention will be described in detail based on examples shown in the drawings. This invention is not limited by this.

FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention.

In FIG. 1, l is a drum for storing drying clothes, and a support plate 3 is provided with a plurality of hot air outlets 2.
It is rotatably supported via felt 4 attached around the periphery. On the other hand, the opposite side of the drum 1 is rotatably supported by a drum shaft 5. A filter cover 6 and a filter 7 are provided on this surface, and an exhaust port 8 is formed in the side wall of the drum l facing this.

Reference numeral 9 denotes a double-blade fan that also serves as a dehumidifying heat exchanger, and is combined with the fan case IO to constitute a blower. Also, there is ring felt on fan case 10! is attached to the drum l and seals it while sliding it. The drum 1 and the double-wing fan 9 are driven by one motor 15 via a drum belt 16 and a fan belt 17, respectively. Due to the rotation of the double-winged fan 9, air is circulated through the path of duct 12 → heater 14 → drum 1 → filter cover 6 - filter 7 → exhaust port 8.
The clothes in the drum are heated and the moisture evaporates. On the other hand, the double-winged fan 9 takes in outside air on the surface opposite to the drum I and exhausts it, thereby cooling and dehumidifying the hot air that has passed through the exhaust port 8.

This condensed water is drained from the drain port 1 provided at the bottom of the duct 12.
3, it is ejected from the aircraft. By repeating the above steps, the clothes in the drum 1 are dried.

The filter 7 is for collecting dust generated from clothing, and as shown in FIG. 2, it is a pre-filter 7a made of a mesh filter.

It is composed of an inner filter 7b and a back filter 0 made of an electrostatic filter.

3 is a block diagram of the control circuit of the embodiment shown in FIG. 1, K is a keyboard for inputting various drying conditions, S is a temperature sensor that detects the temperature of hot air discharged from the drum 1, MC is CPU.

A microcomputer consisting of ROM and RAM,
The microcomputer MO receives outputs from the keyboard and the temperature sensor S to drive and control the heater 14 and the motor 15.

FIG. 4 is an explanatory diagram of the operating process of the clothes dryer shown in FIG. 1, and FIG. 5 shows an example of the wind speed and collection efficiency characteristics of the filter 7 using an electrostatic filter. In the operating process of this clothes dryer, as shown in FIG. 4, the temperature inside the drum 1 rises, the drying and dehumidification of the clothes progresses, and when the entire clothes are completely dried, the sensor S turns off the heater 14. During the drying period up to (point A), cold air is sent to cool the drying clothes.
It is divided into a cool-down period until it finally stops operating (0 points).

During the drying period, in addition to drying the clothes, the air temperature inside the drum is increased to kill microorganisms such as dust mites on the clothes.

However, in order to suppress fabric damage, the air temperature is preferably about 55°C.

In order to increase the operating efficiency, the drying operation is performed by setting the air supplied to the drum l to be large during the drying time, that is, by setting the wind speed V of the air passing through the filter 7 to be high, for example, 50 cm/sec. Then, in the middle of the cool-down period (point B), the rotational speed of the motor 15 is lowered, the air volume is reduced, and the air speed (2) is set to, for example, 20 cm/sec. Figure 5 shows an example of the wind speed V and collection efficiency characteristics when using an electrostatic filter.
When switching to 0 cm/see, the collection efficiency increases from 60% to 85%.

In this way, by increasing the collection efficiency of the filter 7 and circulating the air, fine dust such as dust mites can be almost completely collected.

(G) Effects of the Invention According to this invention, since the volume of cold air supplied to the drum is reduced during the cooling process, the collection efficiency of the filter is improved, and fine dust such as dust mites is almost completely removed from the dried material. completely removed.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention, FIG. 2 is a detailed perspective view of the main parts of FIG. 1, FIG. 3 is a block diagram of the control circuit of the embodiment shown in FIG. 1, and FIG. The figure is a bluff showing the relationship between the operating time, drum internal temperature, and wind speed in the example shown in FIG. 1, and FIG. 5 is a graph showing the wind speed and filter collection efficiency. 5...Drum shaft, 6...Filter cover, 7...Filter 8...Exhaust port, 9...Double wing fan, IO. ...Fan case, 11 ...Ring felt, 12 ...Duct, 13 ...Drain port, 14 ...Heater 15 ... ...Motor 16...Drum belt, 17...Fan belt. 1...Drum, 2...Hot air outlet, 3
...Support plate, 4...Felt, Fig. 1 Fig. 2 S Fig. 7-Fig.

Claims (1)

[Claims] 1. The material to be dried is housed in a rotating drum, hot air or cold air is selectively supplied to the rotating drum, and an electrostatic filter is provided at the air outlet of the rotating drum to remove fine particles of the material to be dried. In the operating method of a clothes dryer designed to collect dust, there is a drying process in which hot air is supplied into a rotating drum to dry the items to be dried, and a drying process in which cold air is supplied into the rotating drum after the drying process is completed. A method of operating a clothes dryer comprising a cooling process of cooling the material to be dried, and characterized by reducing the speed of cold air supplied to the electrostatic filter during the cooling process to improve the collection efficiency of the electrostatic filter. .