JPH0249698A - Clothes dryer - Google Patents

Abstract

PURPOSE:To prevent a leak in ozone generation while improving a sterilizing effect by disposing an ozone generating section on a position downstream of a heater in a drying air course while supplying current simultaneously or alternately to the heater and ozone generating section in the ozone generation. CONSTITUTION:A titanium catalyzer filter 27 for resolving ozone is disposed at the upstream side of a drain port 26, a heater 28 formed of positive characteristic thermistor is disposed at the downstream side of the drain port 26 and an ozone generating section 29 formed of a ceramic electrode is disposed at the downstream side of the heater 28. In a sterilizing process, an indicating unit 39 turns on and off a LED corresponding to the sterilizing process and a sterilization control section 47 operates the heater 28 and the ozone generating section 29, or alternately operates them in consideration of overheat of clothes and capacity of power source. This operation is continued until a sterilizing time counter 48 is counted up. The sterilizing operation applies high voltage to the ozone generating section 29 to generate ozone and supplies thereto dried air heated by the heater 28 to lower the relative humidity so that the ozone and dried air are supplied to a drum 10 to sterilize received clothes.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Field of Application The present invention connects a rotating drum for storing clothes and a drying air path equipped with a dehumidifier and a heater at an inlet and an outlet, respectively.
This invention relates to a clothes dryer that reheats drying air after dehumidifying it and forcefully circulates it around a rotating drum.

(b) Prior Art A clothes dryer of this type that sterilizes stored clothes with ozone is disclosed in Japanese Patent Laid-Open No. 165996/1983. In this method, an ozone generator is attached externally, and the drying air path is connected to this ozone generator, so that ozone is supplied into the drying air path after the drying process is completed or continuously from the beginning.

(c) Problems to be Solved by the Invention The ozone generator applies a high pressure of 1. When jQ flows, at tends to occur, and if the temperature drops even after drying is completed, the relative humidity of the drying air increases, which still poses a problem.

The present invention aims to prevent AT during ozone generation (supply) and to improve the bactericidal effect.

(d) Means for Solving the Problem The solution according to the present invention is to arrange an ozone generator at a position downstream of the heater in the drying air path, and simultaneously or alternately supply power to the ozone generator overnight when ozone is generated. It is configured to do this.

(E) Function When ozone is generated (during supply), the heater heats the dry air, and ozone is supplied on this heated air, sterilizing due to the synergistic effect of ozone and heating, and the ozone generating part is heated by the heater. This reduces the relative humidity of the dry air that passes during power supply.

(f) Embodiment To explain based on the drawings, a machine frame 1 of a clothes dryer has a rear plate 2 fixed to the front space [ ] and a rear plate 3 fixed to the rear opening. The front plate 2 is provided with a clothing entrance 4,
It is designed to open and close with FR5. The rear plate 3 has an inlet 6 for introducing cooling air, which is external air, in the center part, and a lower outlet part in the lower part. A metal annular drum support Ins is fixed near the clothing entrance 4 so as to surround this entrance. Plate 9 is fixed. These drums,
The support plate 8 and the support plate 9 are fixedly attached to the machine frame 1.

A support shaft 10 is suspended horizontally at the center of each of the rear plate 3 and the support plate 9, and is fixed to the rear plate 3 with bolts.

The horizontal shaft-type rotating drano・11, which is a drying chamber that stores clothes and agitates them to dry them, has a front opening.
It is opposed to the inlet 4 and rotatably supported on a drum support plate 8 via felt or the like, and its rear end surface is rotatably supported via a bearing on a support shaft 10 through which a support plate 9 is inserted. A drying air outlet 12 is provided at the center of the rear end surface of the drum, and a lint filter 13 is removably attached thereto. A drying air inlet 14 is provided in the drum support 18.

A vent hole 15 is formed in the support plate 9 facing the outlet 12, and a sealing member that slides on the support plate 9 is provided on the rear end surface of the drum 11 in order to airtightly seal the passage between the outlet 12 and the vent hole 15. 16 is fixed.

A heat exchange type double-sided fan 17 is rotatably fixed to a support shaft 10 between the rear plate 3 and the support plate 9 via an FjI receiver. This double-sided fan 17 has blades radially formed from a central rotary cylinder part 18 to an annular outer peripheral part 19, with a circulation fan 20 on the support plate 9 side and a cooling fan 21 on the rear plate 3 side. It is a centrifugal fan. A rotating groove group 22 consisting of three concentric arc-shaped rotating grooves that also serves as the outer circumferential portion is formed in the outer circumferential direction of the outer circumferential portion 19.

A motor 23 is arranged in the lower right corner of the machine frame 1 when viewed from the front, and rotates the rotary drum 1 at low speed by means of a motor 1 and a belt, and also connects the double-sided fan 17 to a pulley bell I 24. rotates at high speed.

The support plate 9 is stopped by a circulating drying air passage 25 located at the lower left corner of the machine frame 1. This air passage 25 has a peripheral wall facing rearward, and reaches the air passage 14 via an outlet RL 12, a vent 15, and a circulation fan surface 20. A titanium catalyst filter 27 for decomposing ozone is disposed upstream of the discharge port 26, a heater 28 made of a positive thermistor is disposed downstream of the discharge port 26, and a ceramic electrode is disposed downstream of the heater 28. An ozone generating section 29 consisting of the following is provided.

A partition plate 30 is disposed to cover the outer circumferential wall of the double-sided fan 17 of this drying air passage 25 and partition it from the rear, and the annular inner circumferential part of the partition plate 30 is a fixed groove that is labyrinth-coupled with the rotary groove group 22. They form group 31.

On the other hand, the partition plate 30 has a peripheral wall erected on its outer periphery to partition the outer periphery of the cooling air passage 32 .

Opening/closing of the door 5 is detected by a door switch 33, and the temperature of the drying air in Example 1 on the upstream and downstream sides of the double-sided fan 17, which is a dehumidifier, is detected by the first and second temperature measuring means 34, which are composed of a thermistor or the like.
．． 35 measures.

Such clothes drying 412c, CPU, ROM, RAM, Il
A microcomputer (hereinafter referred to as microcomputer) 36 consisting of o
This allows you to control the entire operation. As shown in Figure 2,
The microcomputer 36 includes a door switch 33, first and second temperature measurement means 34, 35, a start key 37, and a sterilization designation key 38.
It inputs various signals from and outputs operating signals and the like to the motor 23, heater 28, ozone generator 29, display device 39, and boogie 40.

For this purpose, the microcomputer 36 includes a stroke control section 41, a drive control section 42, a heater control section 43, a stroke time counter 44,
It includes a calculation section 45, an end determination section 46, a sterilization control section 47, and a sterilization time counter 48.

Next, based on the flowchart in Figure 3, the microcomputer 36
The control operation will be explained. If the sterilization designation key 38 has already been operated, the stroke control section 41 of the microphone 36 sets the sterilization flag and waits for a start signal from the start key 37.

When the start signal is input, the process control unit 41 receives the temperature difference data (Bs) and time data (15) necessary for the drying process.
minute), etc., and set the drive control unit 42 and heater control unit 43.
The motor 23 and heater 28 are allowed to operate, and the stroke time counter 44 starts measuring the stroke time.

It also starts temperature measurement.

During the drying process, the motor 23 and heater 28 are allowed to operate.
The rotating drum 11 is rotated at low speed and the double-sided fan 17 is rotated at high speed in the right direction (clockwise direction).

The drying air circulates through the drying air path 25, and the cooling air flows in and out of the cooling air path 32. The drying air that heats the clothes and contains moisture is completely cooled down by the double-sided fan 17, and the moisture is condensed. The dehumidified water that is rejected flows down the drying air path 25 side and is discharged to the outside from the discharge port 26.

The drying process starts and the process time counter 44 indicates 15 minutes.

When the time is counted, the stroke control unit 41 sets a 15 minute flag,
The difference (A) between the measured temperatures is calculated by the calculating section 45, and the calculated value (A) at this time is set as the reference data (As).

Then, after this, the end determination unit 46 determines the measured temperature difference (A>
The end of the process is determined by comparing when (As)+(Bs) is reached. The stroke control section 41 causes the heater 28 to be deactivated by the 11-day control section 43 based on the power of the discriminating section, and checks the presence or absence of the sterilization flag. If there is no flag, the process is allowed to proceed to the next cool down process; if there is a flag, the process is allowed to proceed to the sterilization process by the sterilization control section 47.

In this sterilization process, the display device 39 blinks the LED corresponding to the sterilization process, and the sterilization control unit 47 operates the heater 28 and the ozone generator 29. Alternatively, they may be activated alternately, taking into account the overheating of the clothing and the power supply capacity. The operation is continued until the sterilization time counter 48 counts up. In this sterilization work, a high voltage is applied to the ozone generator 29 to generate ozone, and dry air heated by the heater 28 and lowered in relative humidity is passed through the ozone generator 29 to transfer the ozone and dry air to the drum 1.
0 and sterilizes the stored clothing. drum 1
The ozone emitted from the outlet is decomposed into oxygen by the filter 27, and is prevented from exiting as ozone from the exhaust port 26.

If the Jfi 5 is accidentally opened during this sterilization process, a strong warning is issued by the buzzer 40 based on the door open signal, and the heater 28 and ozone generator 29 are deactivated.

When the sterilization time counter 48 counts up, the heater 28 and the ozone generator 29 are deactivated, the LED is also turned off, and the stroke control section 41 shifts to a cool-down stroke.

In this embodiment, the drying process is ended by the power of the end determining section, but the process may be ended a certain period of time after the output.

(G) Effects of the Invention According to the present invention, since ozone is supplied on air heated by a heater, the sterilizing effect can be improved due to the synergistic effect, and the relative humidity in the ozone generating area can be lowered to reduce the risk of electrical leakage. This makes it possible to provide a clean and safe clothes dryer.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a clothes dryer according to the present invention, Fig. 2 is a control block diagram, and Fig. 3 is a flowchart for explaining the operation.
-1. 10...Rotating drum, 17...Double-sided fan (dehumidifier), 25...Drying air path, 28...Heater, 29...
・Ozone generating part.

Claims (1)

[Claims] (1) A rotating drum that accommodates clothes is connected to a drying air path equipped with a dehumidifier and a heater at the inlet and outlet, respectively, and the drying air is dehumidified and then reheated by the heater and forcedly circulated around the rotating drum. A clothes dryer characterized in that an ozone generating section is disposed downstream of the heater in the drying air path, and when ozone is generated, power is supplied to the heater and the ozone generating section simultaneously or alternately. .