JPS5971787A - Clothing dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a clothes dryer equipped with a novel heater control mechanism.

<Background> In recent years, with the diversification of clothing, various fibers such as vegetable fibers, animal fibers, and synthetic fibers have come to be used as materials. The number of clothes that can be dried at lower temperatures, clothes that can be dried at slightly lower temperatures, and clothes that need to be dried at temperatures close to room temperature has increased, and it has become necessary to set different clothing drying temperatures for each type of clothing. There is.

<Prior Art> A variety of clothes dryers have been used to forcefully dry these various types of clothes in the optimal condition, but all of them have a heater output that can be switched between high and low, and also have a power supply to the heater. The structure is such that drying can be performed using an air blower by blocking the air.

Therefore, when drying clothes that must be dried at a temperature close to room temperature, select the air blowing mode to dry only by air blowing so that the clothing will not be adversely affected. Can be done.

According to this type of clothes dryer, if the ambient temperature is relatively high, the air blow mode can sufficiently dry clothes, but when the ambient temperature is low, such as in winter, most of the clothes cannot be dried in the air blow mode. There is an inconvenience that it does not.

In order to eliminate this inconvenience, it may be possible to switch the heater output to three levels, and to select not only strong and weak output, but also weak output, but this would reduce the number of modes to be selected. This increases the number of users and makes it difficult to decide which mode to select when using the device, which may actually make it less convenient to use and lower the product value.

<Purpose> The present invention (which detects the ambient temperature and controls the heater output when the J1 ventilation mode is selected, and when the ambient temperature is low, the heater output is made smaller than when the heater weak mode is selected, thereby solving the above drawbacks) It has been resolved.

<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

<Configuration> Figure 1 is a principle diagram showing a clothes dryer, and shows the clothes (11
) and loosens the garment (11).
12) and a fan (
13), a motor (4) that rotationally drives the rotating drum (field and fan (13)), and a heater (21+3+) provided between the rotating drum (12) and the fan (13). .

Then, by rotationally driving the motor (4), the fan (13) is rotated at high speed, and the atmosphere is transferred to the heater (2) (
3) to the rotating drum (12), so when the heater is energized, the atmosphere (16) is heated by the heater and is fed to the rotating drum (12).

The rotating drum (12) is driven to rotate at a low speed by the motor (4), and the clothes inside the rotating drum (12) are loosened and the air (17) from the fan (13) is sufficiently removed.
exposed to dry thoroughly.

FIG. 2 is an electric circuit diagram showing an embodiment of the clothes dryer of the present invention, in which a switch SL and a motor (4) for driving and blowing a rotating drum are connected in series between both terminals of a commercial alternating power supply (1). , the switch S2 and the heater (2) are connected in series, and the series connection circuit of the switch S3 and the heater (3) is connected in parallel with the heater (2), and the timer motor (5) is connected in series.
is connected in parallel with the motor (4), and the connection point between the switch S1 and the motor (4) and the switch S3 and the heater (3) are connected in parallel.
) is connected to a thermostat (6) that becomes conductive when the temperature drops.

1. The switches S1, S2, 's 8 are operated to switch between 0N and OFF by means of a mode selection knob (not shown), and when the ventilation mode is selected, only the switch sl is closed.7, and when the heater weak mode is selected, the switches S1, S2 are operated. is closed, and when the heater strong mode is selected, all switches S1,
S2 and S3 are closed.

In addition, (7) is a door switch that is linked to the opening and closing of the door (not shown) of the clothes dryer, and when opened, the heater (
21 (31, the motor (4) and the timer motor (5) are cut off. Also, the heater (2+
The output of +3+ is set to, for example, 800 W for heater (2) and 400 W for heater (3).

Functions The functions of the clothes dryer with the above configuration are as follows.

Clothes (l/) that must be dried at temperatures close to room temperature (
11), the mode selection knob (not shown) can be operated to select the ventilation mode, and the motor (4) and timer motor (5) are energized by closing only the switch S1. While rotating the rotating drum (12) containing the clothing (11) until a preset time has elapsed, air is blown into the rotating drum to remove the clothing (6. (+1 drying operation can be performed.

The above is the operation when the ambient temperature is quite high.

If the ambient temperature is quite low, even if the atmosphere (1G) is directly fed into the rotating drum, the clothes will hardly be dried.

In this case, the heater (3) can be energized by making the thermostat (6) conductive, so the heater output is made smaller than when the heater weak mode is selected and the atmosphere (1
G) A higher temperature wind (+7) can be fed into the rotating drum, and the drying operation of the clothes (11) can be carried out without causing any adverse effects on the clothes (11).

Therefore, there is no need for the user to measure the ambient temperature, etc., and the power supply to the heater (3) is automatically controlled to dry clothes (11) that must be dried at a temperature close to room temperature. You can reliably follow the action.

When drying other types of clothing (11), it is only necessary to select the heater weak mode or the heater strong mode by operating the mode selection 11 button (not shown), and when the heater weak mode is selected, In this case, the switches S1 and S2 are closed to energize the heater (2) and the motor (4) at the same time, so the warmer air (17) is transferred to the rotating drum ( 12), and when the heater strong mode is selected, switches S1, S2, and S3 are closed to supply the heater (21+3+
Since the motor (4) is energized at the same time as the energization is applied to the rotating drum (
12).

Therefore, the clothes (11) can be quickly dried by supplying the air (17) with a temperature higher than the ambient temperature.

If the ambient temperature is low when the heater weak mode is selected, the thermostat (6) will be turned on and the heater (3) will also be energized, but the air (17) supplied to the rotating drum (12) will be ) does not get hot enough to adversely affect clothing (+1).

Configuration of Other Embodiments> FIG. 3 is an electrical circuit diagram of a clothes dryer using a microcomputer.

(21) is input/output port, output port, RA MXRO
It is a microcomputer with built-in M accumulator, program counter, etc. (4 is a thermistor that is connected in series with a resistor and whose terminal voltage varies depending on the ambient temperature, and (23) is a thermistor that changes the terminal voltage of the thermistor (22). A,
('D-converted and applied to the input/output port ~ Φ converter 1, A4) is a driver that is controlled by the output signal from the output port and energizes the motor (4) and heater f2+ +3), S4 , S5 is a switch which is operated for ON-OFF switching by a mode selection knob (not shown) or the like. The switches S4 and S5 are each connected in series with a resistor, and apply level signals at the time of opening and the time of closing to the input/output ports. In addition, switch S4,
S5 are both opened when the ventilation mode is selected, are both closed when the heater strong mode is selected, and the switch S4 is closed and the switch S5 is opened when the heater weak mode is selected.

<Operation of other embodiments> The operation of the clothes dryer having the above structure is as follows.

First, operate a mode selection knob (not shown) to select the desired mode.

When the heater strong mode is selected, switch S4, S
5 are both closed and when the fan mode is selected, both switches S4 and S5 are opened. When the heater weak mode is selected, the switch S4 is closed and the switch S5 is opened. When the switch is open, a high level signal is applied to the input/output port, and when the switch is closed, a low level signal is applied to the input/output port, so the combination of the level signal from switch S4 and the level signal from switch S5. The microcomputer (2
1) The selected mode can be determined.

For the time being when the heater weak mode is selected, the heater (2
) is energized (17), and when the heater strong mode is selected, the heater (2) (31) is energized, and the motor (4) is rotated to dry the clothes (11), and the time set by the timer is When the time has elapsed, the power to the heater is cut off and the motor (4) is stopped, thereby completing the clothes drying operation.

In addition, when the ventilation mode is selected, the A/D converter (23) is driven 1. It's a thermistor! '! It is determined whether the 414 voltage is below a predetermined voltage (whether the ambient temperature is below a predetermined value).

So, the thermistor terminal? If the pressure is below the specified pressure - (the ambient temperature is above the specified level), the heater [2] + 3
+ is not energized at all, and by rotating the motor (4), atmospheric air (1G) is directly delivered to the rotating drum (I2) to dry the clothes (11). Then, when the time set by the timer has elapsed, the motor (4) is stopped, and the clothes drying operation using only air blowing is completed.

Also, if the terminal voltage of the thermistor is below a predetermined value (ambient temperature or below a certain value), only the heater (3) is energized,
Furthermore, by rotating the motor (4), the clothes M (II
), perform a 1% Δ operation. Here, the output of the heater (3) is set to a predetermined value smaller than the output of the heater (2), so the temperature of the air (17) sent to the rotating drum (12) by the fan (13) is: The temperature of the air (17) is lower than that when the low heater mode is selected, and the drying operation can be performed without any adverse effect on the clothes in the rotating drum. That is, even if low-temperature air (16) is fed as it is to the rotating drum (12), it will hardly dry the clothes, but if the air is hotter than the air (16) and has an adverse effect on the clothes (11), Clothes can be sufficiently dried by supplying wind θ at a temperature that does not affect the clothes.

Then, when the time set by the timer has elapsed, the heater (3) is de-energized and the motor (4) is stopped, thereby completing the clothes drying operation.

The above has described an example in which when the air blowing mode is selected in a state where the ambient temperature is low, the heater is energized with a smaller output than the heater when the heater weak mode is selected, but the present invention is not limited to this example. For example, by controlling the phase of the heater, it is possible to obtain an output smaller than the heater output when the heater weak mode is selected.
It is possible to apply a -1 change.

<Effects> As described above, the present invention has two states: a state in which the ambient temperature is detected during the full ventilation mode and no electricity is applied to the heater, and a state in which the heater is energized to obtain a heater output smaller than the heater output when the heater weak mode is selected. Since the temperature of the air sent to the rotating drum can be set to a temperature that does not have an adverse effect on the clothes, yet allows sufficient drying, it is possible to maintain the temperature of the air sent to the rotating drum. It has the unique effect of being able to perform a reliable drying operation without being affected by temperature.

[Brief explanation of the drawing]

The first factor is a principle diagram showing a clothes dryer, Figure 2 is an electric circuit diagram showing one embodiment of the clothes dryer of the present invention, and Figure 3 is an electric circuit diagram showing another embodiment of the clothes dryer of the invention. :, Fourth point 1 is a flowchart showing the operation of the clothes dryer of the present invention. 2.3... Heater, 4 - Motor, 5
Timer motor, 6, thermostat, 1
1 clothing, 12 rotating drum, 21
Microcomputer Kyu 22 Thermistor, 23-A/D
Converter, 24...Dryno〈-1S,,S2
, S3, S4, S5 switches.

Claims (1)

[Claims] ■ A clothes dryer in which air is sent to the rotating drum while rotating it to accommodate clothes, and a heater energization mode that heats the air and a blower mode that does not heat the air can be selected. In addition to providing a temperature sensing element for detecting temperature, an ambient temperature determination means is provided to determine whether the ambient temperature is lower than a predetermined temperature when the ventilation mode is selected, and a signal indicating that the ventilation mode has been selected and an ambient signal are at the predetermined temperature. A clothes drying device characterized by being provided with a heater control means for controlling energization to the heater so that the heater output is smaller than the heater output when the heater energization mode is selected by receiving a signal indicating that: .