JPH105496A - Clothing dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dry clothing while restraining a temperature low, and shorten drying time even when the clothing weak in a temperature is dried by detecting a temperature of circulating air by a temperature sensor, and controlling a temperature of the circulating air by an opening-closing quantity of an opening-closing cover. SOLUTION: First of all, clothing to be dried is put in a drum 6, and a door 2 is closed, and when a selecting switch of a drying course of an operation handling part 4 is turned on, an opening-closing cover 20 is closed, and an electric current is carried to heaters 7-1, 2, and the drum 6 and an air blower 8 are started. Moisture evaporated from the clothing circulates together with circulating air, and heat is exchanged between the circulating side and the cooling side of a fan casing 12, and condensed water is drained outside a machine. At drying time, an outlet temperature of the drum 6 is detected by a drum inside temperature sensor 23, and the temperature is adjusted while adjusting an opening quantity of the opening-closing cover 20. Humidity of an outlet is detected by a drum inside humidity sensor 22, and the opening- closing cover 20 is fully opened when entering a falling drying rate process, and when drying is detected, the heaters 7-1, 2 are turned off, and the drum 6 and the air blower 8 are stopped, and the opening-closing cover 20 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a clothes dryer.

[0002]

2. Description of the Related Art In the past, rotary drum-type clothes dryers in Japan used to be a tributary of an exhaust drying method that had a simple structure and good drying efficiency. The air is exhausted as humid air, which has drawbacks such as discomfort in the room and fouling of the walls.Currently, the humid air is returned to the water with a heat exchanger and drained, and the moisture is discharged to the room. There are no dehumidification and drying systems in the tributaries. However, although the humidity in the room is eliminated, the heat exchanger mounted on the rotating drum type clothes dryer is limited in terms of price and space, and the drying efficiency is inferior to the exhaust drying method of a generation ago. The drying time is long and the drying cost is high, and the temperature of the drying room is high, and the clothing tends to shrink or be damaged.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a clothes dryer that makes the most of the advantages of the dehumidification and exhaust types.

[0004] When drying clothes that are resistant to temperature, a dehumidifying drying method is adopted in which the room does not become damp, giving priority to the environment over the clothes. Also, when drying clothes that are sensitive to temperature, the exhaust drying method is used in which the clothes are given priority over the environment and the temperature is low.

[0005]

In order to achieve the above object, the present invention provides a circulating air path for a dehumidification type rotating drum type clothes dryer, in which one opening communicating with the outside of the dryer frame is provided, and the opening can be opened and closed. Attach, close the lid and dry with the dehumidification drying method, open the lid and exhaust a part of the circulating air, mix the outside air to that extent, and combine the dehumidification drying method and the exhaust drying method Allow drying.

[0006] The combination of the dehumidification drying method and the exhaust drying method in which the lid of one opening is opened can provide almost the same characteristics as the exhaust drying method with a low-cost configuration.

When drying clothes that are resistant to temperature, the lid is closed so that the room does not become wet, and the clothes are dried by a dehumidifying drying method, giving priority to the environment over the clothes. In the case of drying clothes that are weak in temperature, the clothes are prioritized over the environment, and the lid is opened and the circulating air is partially exhausted.

An opening communicating with the outside of the dryer frame is provided in the circulation air path of the dehumidifying rotary drum type clothes dryer, and the opening is openable. If the opening is closed, the dehumidifying and drying system itself functions. If the lid of the opening leading to the outside of the dryer frame is opened, the pressure in the circulation airway is higher than that outside the frame (outside air). Outside air outside the frame is again sucked into the circulation airway, and performs the same operation as the exhaust drying method.
Therefore, by providing one opening communicating with the outside of the dryer frame in the circulation airway and opening and closing the lid, the characteristics of the dehumidifying drying method and the exhaust drying method can be obtained.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show the structure of a clothes dryer according to the present invention, which enables drying by both dehumidification and exhaust.

In FIG. 1, reference numeral 1 denotes an outer frame. Inside the outer frame 1, a drum 6 serving as a clothes drying chamber is provided on a drum support 13 having a front side attached to a front inner surface of the outer frame 1, and a drum fan on a rear side. The support 14 is rotatably supported and installed.

Reference numeral 2 denotes a door which covers the clothing slot 3 and is configured to be openable and closable. Reference numeral 4 denotes a driving operation unit.

5, reference numeral 5 denotes a drum temperature sensor 23, an outside air temperature sensor 24, and a drum humidity sensor 22 as shown in FIG.
Are detected, and the AC motor 11, the heater 7-1, the heater 7
-2, a control device including a microcomputer that drives and controls the open / close lid motor 20-1. As shown in FIG. 6, the AC motor 11 is controlled via a triac, and the open / close lid motor 20-1 is connected to the open / close lid drive cam 20-.
2, and the heaters 7-1 and 7-2 are controlled via relays.

Reference numeral 8 denotes a blower (heat exchange fan) for sending hot air generated by the heater 7 into the drum 6.

An air blower (heat exchange fan) 8 also serves as a heat exchanger. An AC motor is provided via a fan belt 10 and a drum belt 9 for rotating the blower (heat exchange fan) 8 and the drum 6. 11 is connected.

Reference numeral 12 denotes a fan casing, which is a circulation airway 1
7 to a drum support 13. An opening 17-2 communicating with the outside of the machine is provided at the front of the circulation air passage 17, and the opening 17-2 can be automatically opened and closed by the opening and closing lid motor 20-1 via the opening and closing lid drive cam 20-2. An opening / closing lid 20 is provided. The temperature can be selected in the drying course in the operation section 4 so that the high temperature drying course (80 ° C.)
Standard drying course (65 ° C), low temperature drying course (50 ° C)
Set as The opening / closing lid motor 20-1 is linked so that the opening / closing lid motor 2 is adjusted to the set temperature of the drying course.
The opening area of the opening / closing lid 20 is adjusted at 0-1.

Thus, when operating the clothes dryer constructed as described above, first, the door 2 is opened, clothes which need to be dried are put into the drum 6 through the clothes inlet 3, and the door 2 is closed. The switch for selecting the drying course 4 is turned on. When the switch is turned on, the open / close lid motor 20-1 is driven to close the open / close lid 20 as shown in FIG. 7, and the AC motor 11, the heater 7-1 and the heater 7-2 are energized, and the drum 6 Blower with heat exchanger (heat exchange fan)
8 starts rotating and rotates until the drying is completed. Here, the moisture evaporated from the clothes passes through the lint collecting device 15 together with the circulating air, passes through the drum exhaust port 6-1 in the rear wall of the drum, and flows into the circulation side of the fan casing 12. The outside air flows into the cooling side of the fan casing 12 from the rear plate intake port 16-1 of the rear panel 16 and the rear plate exhaust port 16-2.
More exhausted.

At the outer periphery of the blower (heat exchange fan) 8,
The circulating air and the cooling air are separated by the labyrinth seal portion with the partition plate without entering and exiting. Here, the front and back of the blower (heat exchange fan) 8 are provided between the circulation side and the cooling side of the fan casing 12. The moisture contained in the circulating air is condensed to become water and flows into the circulation air passage 17 from the casing discharge port 12-1 of the fan casing 12,
It is discharged out of the machine from the drain 17-1.

Further, during drying, the temperature of the outlet of the drum 6 is detected by the temperature sensor 23 in the drum, and the opening amount of the opening / closing lid 20 is controlled by driving the opening / closing lid motor 20-1 so that the garment falls below the set temperature. The drying operation is continued while adjusting so that the humidity at the outlet of the drum 6 is detected by the humidity sensor 22 in the drum, and when the drying process starts, the opening / closing lid motor 20-1 is fully opened to drive the opening / closing lid motor 20-1. Control. When the drying is detected continuously, the heaters 7-1 and 7-2 are turned off. When the clothing has cooled to a certain temperature, the AC motor 11 is turned off. Subsequently, the opening / closing lid 20 is closed by the opening / closing lid motor 20-1.

[0020]

According to the present invention, a single opening communicating with the outside air is provided in the circulation air passage, and if the opening amount can be automatically and continuously changed, the heater can be used as in the related art even when drying clothes that are weak in temperature. If the operation is performed with the opening part opened strongly, without weakening, the temperature can be lowered and drying can be performed, so that the drying time can be reduced to half of the conventional case.

Also, the time for cooling the clothes after drying can be shortened more quickly by opening the opening to cool the clothes quickly.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of one embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which an opening / closing lid of FIG. 1 is closed.

FIG. 3 is an explanatory view showing a state in which the opening / closing lid of FIG. 1 is opened.

FIG. 4 is a front view of one embodiment of the present invention.

FIG. 5 is a block circuit diagram of a control unit.

FIG. 6 is a drive circuit diagram of an AC motor, a heater, and an opening / closing lid motor.

FIG. 7 is a flowchart of a drying process according to an embodiment of the present invention.

FIG. 8 is a characteristic diagram showing a relationship between a drying time and a degree of drying when the lid is opened and closed.

FIG. 9 is a characteristic diagram showing a relationship between a drying time and a drum outlet temperature when the opening and closing lid is opened and closed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 4 ... Operation part, 5 ... Control part, 6 ... Drum, 7-
1, 7-2: heater, 8: double-sided fan, 11: AC motor, 17: circulation airway, 17-2: opening, 20: opening / closing lid, 20-1: opening / closing lid motor, 20-2: opening / closing lid Drive cam, 21: exhaust port filter, 22: humidity sensor, 2
3 ... Drum inside temperature sensor, 24 ... Outside air temperature sensor.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor: Etsio Niimi 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Headquarters, Hitachi, Ltd.Electrical Equipment Division

Claims (2)

[Claims] 1. A heater for heating, a clothes drying chamber, and a heat exchanger for dehumidifying moisture from clothes, a circulation air passage is provided so that air circulates through the components, and the circulation air passage communicates with outside air. In a clothes dryer provided with one opening and provided with an opening / closing lid for opening and closing the opening, the temperature of the circulating air is detected by a temperature sensor, and the temperature of the circulating air is controlled by the opening / closing amount of the opening / closing lid. A clothes dryer characterized by the following. 2. A heater for heating, a clothes drying room, and a heat exchanger for dehumidifying moisture from clothes, a circulation air passage is provided so that air circulates through the components, and the circulation air passage communicates with outside air. A clothes dryer provided with an opening and an opening / closing lid for driving the opening / closing of the opening, wherein the cooling operation after drying is performed by opening the opening / closing lid.