JPH0249699A - Clothes drier - Google Patents

Abstract

PURPOSE:To reduce a danger of inhaling ozone, while improving a sterilizing effect by providing a heater control unit for making a heater inoperative after a certain time, a sterilizing control unit for operating an ozone generating unit by the output of a sterilization judging unit while making the ozone generating unit inoperative in the output of completion judgment unit or in a certain time thereafter and a detecting means for informing the completion of process in the output of completion judgment unit or in a certain time thereafter. CONSTITUTION:When a sterilization judging unit 46 judges comparatively measure temperature difference A>=As+Bo, a process control unit 41 examines the presence of a sterilizing flag. In the presence of the flag, a LED of an indicating unit 39 corresponding to sterilization is flashed, while an ozone generating unit 29 is operated by a sterilization control unit 47. Irrespective of the presence of the sterilizing flag, a completion judging unit 48 compares a measured temperature difference A>=As+Bs to judge the completion, and in the output of the completion judging unit the process control unit 41 makes a heater 28 and the ozone generating unit 29 inoperative by a heater control unit 43 and a sterilization control unit 47 to turn off the sterilizing LED and shift the operation to the information of completion by a buzzer. After the completion of the information by the buzzer 40, the process control unit 41 is shifted to a cooling-down process.

Description

DETAILED DESCRIPTION OF THE INVENTION B) Industrial Application Field The present invention provides a method for connecting a rotating drum for storing clothes with a drying air passage provided with an arrester and a heater at large inlets and outlets. The present invention relates to a clothes dryer in which drying air is dehumidified, reheated by a heater, and forced to circulate around a rotating drum.

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

(c) Problems that the invention aims to solve However, ozone has an adverse effect on the human body when inhaled in large quantities, and in the conventional example, there is a danger of continuous supply, and even though the temperature is relatively high, ozone is supplied after drying is completed. If this is done, the sterilizing effect will be reduced, and if the drying is completed and the drying is completed, for example, if the drying is completed, the user may take out the clothes, so there is still a risk of suction.

The present invention aims to reduce the risk of ozone inhalation and improve the sterilization effect.

(d) Means for solving the problem The solution according to the present invention includes a temperature measuring means for measuring the temperature of the drying air on the upstream and downstream sides of the dehumidifier, and an ozone generator disposed in the drying air path. a calculation unit that calculates a temperature difference from the measured temperature; an end determination unit that compares the calculated measured temperature difference with the end/M degree difference to determine whether drying is completed or not yet completed; a sterilization determination unit that determines whether sterilization has started by comparing a temperature difference smaller than the measured temperature difference; a heater control unit that deactivates the heater at the time of output from the end determination unit or after a certain period of time; and an ozone generation unit. a sterilization control section that is activated by the output of the sterilization determination section and deactivated at the time of the output of the termination determination section or after a certain period of time; and a notification means that notifies the end of the process at the time of the output of the termination determination section or after a certain period of time. The configuration is as follows.

(e) Operation The sterilization control unit that controls the ozone generation unit is simultaneously controlled based on the temperature difference and time data used to determine the progress of drying, and the final stage of drying work where the user rarely opens the door Sterilization work is carried out simultaneously in several parts. A buzzer alerts the user when the drying process is complete. In some cases, ozone production has also ceased.

(F) To explain based on the drawings of the embodiment, an m-frame 1 of a clothes dryer has a front plate 2 fixed to the front opening and a rear plate 3 fixed to the rear opening. The front plate 2 is provided with a clothing entrance 4, which can be opened and closed by a door 5. 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 plate 8 is fixed near the clothing entrance 4 so as to surround this entrance. The support plate 9 is fixedly attached. These drum support plates 8
And the support plate 9 is attached to the machine frame 1 according to the lunar calendar.

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.

A horizontal shaft-type rotary drum 1211, which is a drying chamber for storing, agitating, and drying clothes, has a front opening facing the clothes entrance/exit 4 and is rotatably supported on the drum support plate 8 via felt or the like. , the 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. The drying air inlet 1-114 is provided on the drum support plate 8.

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 a bearing. This double-sided fan 17 is a centrifugal fan in which blades are formed radially from a central rotary cylinder part 18 to an annular outer peripheral part 19, and a circulation fan surface 20 is formed on the support plate 9 side and a cooling fan surface 21 is formed on the rear plate 3 side. It is. 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 disposed at the lower right corner of the machine frame 1 when viewed from the front, and rotates the rotary drum 11 at low speed using a pulley heald, and rotates the double-sided fan 17 at high speed using a pulley belt 24.

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 inlet 14 via an outlet 112, a vent 15, and a circulation fan surface 20, and has an outlet 26 for condensed dehumidified water in the middle. A titanium catalyst filter 27 for decomposing ozone is disposed upstream of this discharge port 26, a heater 28 consisting of a positive temperature coefficient thermistor is disposed downstream of this discharge port 26, and a ceramic electrode is disposed downstream of this 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 the drying air passage 25 and partition it from the rear, and the fixed groove group is labyrinth-coupled with the rotary groove group 22 on the annular inner circumference thereof. 31 is formed.

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 .

The opening/closing of s5 is detected by the door switch 33, and the temperature of the dry air on the upstream and downstream sides of the double-sided fan 17, which is a dehumidifier, is detected by first and second temperature measuring means 34.
35 measures.

Such a clothes dryer has a CPU, ROM, and RAM.

A microcomputer (hereinafter referred to as a microcomputer) consisting of Ilo
36 controls the entire operation. As shown in FIG. 2, the microcomputer 36 inputs signals from the door switch 33, first and second temperature measuring means 34, 35, start key 37, and sterilization designation key 38, and receives signals from the motor 23, heater 28, ozone An operation signal 46, etc. is output to the generating section 29, display device 39, and buzzer 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, a termination determination section 48, and a sterilization control section 47.

Next, the control operation of the microcomputer 36 will be explained based on the flowchart of FIG. First, when the sterilization designation key 38 is operated, the stroke control section 41 of the microfunnel 36 sets a sterilization flag and waits for a start signal from the start key 37. When the start signal is input, the stroke control section 41 starts the drying process. Temperature difference data (Bs) (Bo (< B
s)), time data (15 minutes), etc., the drive control section 42 and heater control section 43 operate the motor 23 and heater 28, and the stroke time counter 44 starts measuring the stroke time. Also, start temperature measurement.

In the drying process, the motor 23 and heater 28 are operated,
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 cooled by a double-sided fan 17 to condense the moisture. Such dehumidified water flows down the drying air path 25 side and is discharged to the outside from the discharge port 26.

When the drying process starts and the process time counter 44 measures 15 minutes, the process control unit 41 sets a 15 minute flag, causes the calculation unit 45 to calculate the difference (A) between the measured temperatures, and uses this as reference data (As). Set the calculated value (A) of the time.

After that, the sterilization determination unit 46 determines the constant temperature f difference (A
)≧(As)+(BO). H. The process control unit 41 checks whether there is a sterilization flag. If there is a flag, the LED corresponding to sterilization on the display device 39 is turned on, and the ozone generating section 29 is activated by the sterilization control section 47.

This sterilization work is carried out in parallel with the drying work, and the heated drying air with reduced relative humidity is sent to the ozone generator 29, where it is mixed with ozone and supplied to the drum 10. The ozone coming out of the drum 10 is passed through the filter 27.
It is completely decomposed into oxygen and is prevented from exiting directly from the exhaust port 26.

Regardless of the presence or absence of the sterilization flag, the end determination section 48 determines the end by comparing the measured temperature difference (A) ≧ (As) + (Bs), and when there is an output from the end determination section, the end determination section 48 determines the end of the process. The control unit 41 causes the heater 28 and the ozone generator 29 to be inactivated by the heater control unit 43 and the sterilization control unit 47, and the sterilization L
Turn off the ED and move on to the end buzzer notification work.

This is to notify the end of the drying process for a predetermined time using the buzzer 40, and the user usually takes out the clothes after this notification.

When the notification by the buzzer 40 ends, the stroke control section 41 causes the cycle to proceed to a cool-down stroke.

The difference between the temperature difference data <Bs) and <Bo) corresponds to the time during which sterilization time can be secured.

In this embodiment, the drying process is terminated by the output from the end determination section, but the process may be terminated after a certain period of time after the output. Or, it ends at the end of the drying process, and the end buzzer notification is performed after the drying process ends. If ozone generation is stopped a little before the end buzzer notification (a certain period of time), the risk of ozone inhalation due to opening of the folding screen 5 can be further reduced.

(G) Effects of the Invention According to the present invention, the ozone sterilization work is simultaneously performed at the last part of the drying process before the end buzzer alerts, so there is little risk of opening the door. By generating ozone, high safety can be ensured, and
The synergistic effect of high-temperature dry air and ozone improves the sterilization effect, making it possible to provide a safe and clean 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 flow chart for explaining the operation. 10...Rotating drum, 17...Double-sided fan (dehumidifier), 25...Drying air path, 28...Heater, 29...
・Ozone generating part, 34.35...Temperature measuring means, 36
... Microcomputer, 40 ... Buzzer, 45 ... Calculation section, 46 ... Sterilization determination section, 43 ... Heater control section, 4
7... Sterilization control unit, 48... Completion determination unit. Figure 2 Figure 1 Figure 3

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. The clothes dryer includes a temperature measuring means for measuring the temperature of the drying air on the upstream and downstream sides of the dehumidifier, an ozone generating section disposed in the drying air path, and a temperature measuring means for measuring the temperature of the drying air on the upstream and downstream sides of the dehumidifier, a calculation unit that calculates a temperature difference; an end determination unit that compares the calculated measured temperature difference with an end temperature difference to determine whether drying is completed or not yet completed; a sterilization determination unit that determines the start of sterilization by comparing with the sterilization determination unit; a heater control unit that deactivates the heater at the time of the output of the end determination unit or after a certain period of time; and a heater control unit that operates the ozone generation unit by the output of the sterilization determination unit. A clothes dryer comprising: a sterilization control section that is deactivated when the termination determination section is output or after a certain period of time; and a notification means that notifies the end of the process when the termination determination section is output or after a certain period of time.