JP3239390B2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a clothes dryer in which a heater or a motor is automatically controlled in accordance with an installation environment.

[0002]

2. Description of the Related Art In recent years, clothes dryers have been installed in a wide variety of places, and many condominiums and the like are installed in places that are narrow and close to airtight. However, there is a demand for optimally controlling the finished state of clothing after drying is completed, regardless of the installation location.

Conventionally, a control device of this type of clothes dryer has
The effects of the installation environment were not considered.

[0004]

In such a conventional apparatus for controlling a clothes dryer, the environment in which the clothes dryer is installed is not taken into consideration. There was an inconvenience that the process ended in a dry state.

The present invention solves the above-mentioned problems. By detecting a change in room temperature, an installation environment of a clothes dryer is estimated, and drying control is performed in accordance with the installation environment to obtain an optimal finished state of clothes. The purpose is to end the drying with.

[0006]

According to the present invention, there is provided a drum for rotating clothes, a heating means for heating clothes in the drum, a temperature detecting means for detecting room temperature, and Enter the room temperature detected by the detection means
And consists of a control unit for controlling the drive of the drum and the heating means, the control means, the initial room temperature it encounters during the drying operation initiated by said temperature detecting means, of the initial
The driving of the heating means and the drum is controlled in accordance with a rise in the room temperature after a predetermined time with respect to the room temperature, and the delayed drying operation is performed.
It is a means of solving the problem that the turning time is extended by a predetermined time .

[0007]

According to the present invention, it is possible to estimate the installation environment of a clothes dryer by detecting a change in room temperature, and perform drying control according to the installation environment. In particular, in a place where the installation environment is small and close to a closed state, by extending the drying time according to the environment, the drying can be completed in an optimal drying state without being finished in a dry state.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 2, the drum 1 holds clothes and is rotated by the motor 2. The heat exchange type double-wing fan 3 is used for dehumidification, and is rotated by the motor 2. Thermistor 4 a detects the temperature of the circulating hot air is in the inlet side of the heat exchanger type wings fan 3, the thermistor 4 b detects the temperature of the circulating hot air located at the outlet side of the heat exchanger type wings fan 3. The thermistor 4c is located at the rear of the heat exchange type double wing fan 3 and detects room temperature. The heater 6 is located in the circulation hot air path and is for drying clothes.

As shown in FIG. 1, a control circuit 7 receives the output of the temperature detecting means 4 constituted by the thermistors 4a, 4b and 4c, and controls a motor 2 and a heater 6 by a switching circuit 5.

FIG. 3 is a diagram showing the relationship between the drying time and the temperature data by the temperature detecting means for illustrating the drying control method according to the present invention. At a temperature within about drum temperature of the thermistor 4a, thermistor 4 temperature b, the heat exchange type wings fan 3
Is cooled by the low temperature. Although the temperature of the thermistor 4c is close to room temperature, it rises with the drying operation.

Before starting the drying operation, the thermistors 4a, 4a
b and 4c are almost the same temperature T0, but the temperature of the thermistors 4a and 4b gradually rises with the drying operation,
After that, the drying period becomes almost constant. Clothes temperature in the drum temperature is increased thermistor 4 a is increased in accordance drying was complete the drying operation after drying the detected air blowing operation by the rate of change of temperature difference between the thermistor 4a, 4b. Here, in a case where the installation environment of the clothes dryer is wide and the space is open as in (a), the temperature difference ΔT1 between the temperature T1 when the temperature of the thermistor 4c becomes steady and the initial temperature T0 is small. However, in an installation environment that is narrow and close to hermetic, the temperature rise value ΔT2 (T2−T0) until the temperature of the thermistor 4c becomes steady increases as shown in FIG. Thermistor 4
If the temperature of a rises quickly and drying is detected, and if the air blowing operation is immediately performed, the drying is terminated while remaining dry, so that after the detection of the drying, the time-delayed drying operation corresponding to T2 is performed, so that the clothing The drying can be ended in a suitable finished state.

FIG. 4 shows the initial temperature T0 of the thermistor 4c.
This is an embodiment in which a control table for delay drying time is stored in the control circuit 7 in accordance with a temperature rise value ΔT from the initial temperature T0 to a steady state.

The operation of the above configuration will be described with reference to the flowchart of FIG.

The control circuit 7 inputs the starting temperature T0 from the thermistor 4c (step 1), and turns on the motor 2 and the heater 6 by the switching circuit 5 to perform a drying operation of the clothes (step 2). It is determined whether the temperature data of the thermistor 4c is saturated (it has reached a steady state) (step 3), and a temperature rise value from the initial temperature when the temperature at the steady state is T1 (T2) is determined. To △ T1 (△ T
2) (Step 3).

As the clothes dry, the temperature of the thermistor 4b rises, and if the drying is detected based on the rate of change of the temperature difference between the thermistors 4a and 4b (step 5), the initial temperature T0
After the delay drying time is determined from the delay drying time table according to the temperature rise value ΔT1 (ΔT2) and the drying operation is performed (step 6), the heater 6 is turned off, and after the air blowing operation for 3 minutes ( Step 7), turn off the motor 2 and end the drying.

In this embodiment, the temperature rise value until the thermistor 4c reaches the steady value is set to ΔT1 (ΔT2), but the temperature rise value after a certain time from the start is set to ΔT1.
(△ T2).

[0017]

As apparent from the above embodiments, according to the present invention, the control means for controlling the drying process is based on the initial temperature of the temperature sensor for detecting the room temperature and the increase in the temperature. Can be estimated, and the drying can be automatically terminated within a drying time according to the installation environment, so that the user can be provided with the optimum finished state of the clothes.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control device of a clothes dryer according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of the clothes dryer.

FIG. 3 is a diagram showing the relationship between the circulating hot air temperature, room temperature, and the drying time during the drying operation.

FIG. 4 is a diagram showing an initial temperature of the temperature sensor for detecting the room temperature and a delayed drying time according to a temperature rise value until the temperature reaches a steady state.

FIG. 5 is a flowchart illustrating the operation of the control device.

[Explanation of symbols]

 2 Motor 4 Temperature detection means 6 Heater 7 Control circuit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tadashi Inuzuka 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-3-133500 (JP, A) JP-A-60- 215400 (JP, A) JP-A-60-31796 (JP, A) JP-A-3-66398 (JP, A) JP-A-63-9497 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/02-58/28

Claims (1)

(57) [Claims] Input and 1. A drum for rotating the garment, and a heating means for heating the clothes in said drum, a temperature detecting means for detecting the room temperature, a room temperature detected by said temperature detecting means
And then, it consists of a control unit for controlling the drive of the drum and the heating means, the control means, the initial room temperature it encounters during the drying operation initiated by said temperature detecting means, the initial
According to the room temperature rise value after a predetermined time with respect to the room temperature ,
Delayed drying by controlling the driving of the heating means and the drum
A clothes dryer configured to extend the operation time for a predetermined time .