KR20120077194A - Drying machine - Google Patents

Abstract

PURPOSE: A clothing drier and a clothing drying method thereof are provided to enable users to control the turning on/off the output of a heater for the predetermined time after controlling the temperature. CONSTITUTION: A clothing drier comprises the following: a heater output controller(42) controlling the turning on and off of the temperature for the predetermined time; and a drive controller(43) receiving a door opening signal from a door opening sensor, and turning off the heater when the door is opened. The heater output controller and the drive controller trans-receive data using a serial communications method.

Description

Clothes Dryer {Drying Machine}

The present invention relates to a clothes dryer for reducing the malfunction of the heater due to the difference between the actual temperature and the sensing temperature according to the thermal delay phenomenon by controlling the output of the heater for a predetermined time after starting the temperature control.

The present invention also relates to a clothes dryer having multiple safety devices for compensating for malfunction of a temperature sensor, shutting off a heater by opening a door, and controlling a heater output due to humidity.

Generally, the clothes dryer method is largely divided into a temperature sensor and a humidity sensor. First, a temperature sensor is used to supply power to a microcomputer and a circuit as shown in FIGS. 1 and 2. The power supply unit 20, the motor 4 for driving the drum 2 and the heat exchange fan 7, a semiconductor heater 13 for evaporating moisture contained in the clothes inside the drum, and A temperature sensor 9 for detecting the temperature and checking the temperature of the surface of the garment, and a temperature sensor for detecting the temperature after the vaporized water exchanges heat in the fan 7 and thereby dehumidifies the condensed water ( 12) and a microcomputer 22 that converts the value of the sensor from an analog signal to a digital signal to control calculation, determination, and load.

On the other hand, the humidity sensor type clothes dryer, as shown in Figure 3, the power supply unit 20 for supplying power to the microcomputer 22 and the circuit, the motor 4 for driving the drum and the heat exchange fan, the drum The semiconductor heater 13 for evaporating the moisture contained in the clothes inside, the humidity sensor unit 24 for checking the moisture content of the clothes in the drum, and the measurement of the sensor converted from an analog signal to a digital signal It is composed of a miccom 22 to calculate and determine the value and to control the load.

Referring to the operation and problems with respect to the conventional clothes dryer configured as described above are as follows.

First, the method by the temperature sensor, when driving the dryer with the clothes, the motor 4 and the heater load 13 is turned on and when time passes, the water contained in the clothes evaporate to vapor and the amount of evaporation It will increase gradually.

At this time, the temperature of the heaters 13 is gradually increased to the temperatures of S1 and S2. After a predetermined time has elapsed, the amount of heat generated by the heater 13 and the amount of vaporization of water vapor are constant so that the temperature of the temperature sensors S1 and S2 is increased. It becomes constant.

In addition, the drying process proceeds by continuously injecting a certain amount of gas, and at the time when the exhaust temperature increases, a control method is used to complete the drying by gradually adjusting the amount of heat or gradually lowering the amount of heat in the initial stage. . According to such a control method, too much calories may cause damage to clothing or overheating of the apparatus, and if the calories are continuously reduced from the beginning, a delay in drying time and a poor dry state may occur.

In particular, at the beginning of the dryer operation, since the heat heated by the heater does not spread evenly throughout the dryer, the measured temperature measured by the temperature sensing sensor and the actual temperature in the actual dryer are often different. Therefore, as described above, there is a problem in that a malfunction such as entering too much calories occurs.

In addition, when controlling only by temperature or humidity in a conventional manner, a drying time becomes long or a poor drying state occurs, and an error becomes very large when only the number of touch coefficients is used when determining the initial drying time.

In order to overcome this, the method of measuring the weight of the garment to vary the drying time according to the weight is widely used. However, even if the weight is the same, the drying time may vary depending on the type or the fiber of the garment. That is, in the case of clothes that are heavy and dry quickly, problems such as damage to clothes or overheating of the device may also occur due to exposure to excessive drying heat.

An object of the present invention is to solve the problems as described above, the heater malfunctions due to the difference between the actual temperature and the sensing temperature according to the thermal delay phenomenon by controlling the output of the heater on / off for a predetermined time after starting the temperature control It is to provide a clothes dryer to reduce.

It is also an object of the present invention to provide a clothes dryer having multiple safety devices for compensating for malfunction of a temperature sensor, shutting off a heater by opening a door, and controlling a heater output due to humidity.

The present invention to achieve the above object is a sensing means consisting of a plurality of sensors; Control means composed of a plurality of controllers; And a control unit installed in an outer case, wherein the control unit comprises: a heater output controller configured to control an output of the heater on / off for a predetermined time after starting temperature control; And a driving controller which receives whether the door is opened from the door opening sensor of the sensing means and cuts off the power of the heater when the door is opened.

In addition, the present invention is a clothes dryer, characterized in that the controller in the control means transmits and receives data in a serial communication method.

In another aspect, the present invention provides a clothes dryer, wherein the operation unit includes a touch keypad and an encoder program for converting an input of the touch keypad into a control signal of the control means.

In another aspect, the present invention, the clothes dryer, the control means is characterized in that it further comprises a humidity controller for receiving the humidity from the humidity sensor of the sensing means to control the output of the heater in accordance with the humidity.

In another aspect, the present invention, the clothes dryer, characterized in that it further comprises a steam discharger for converting the wet steam into water using a thermoelectric module to discharge.

As described above, according to the clothes dryer according to the present invention, the effect of reducing the malfunction of the heater control caused by the difference between the actual temperature inside the dryer and the sensed temperature by the temperature sensor according to the thermal delay phenomenon is obtained. Lose.

In addition, according to the clothes dryer according to the present invention according to the present invention, by measuring the humidity by the humidity sensor to control the heating of the heater in accordance with the humidity, it is possible to prevent the damage to the clothing or overheating of the equipment due to excessive operation of the heater Is obtained.

1 is a schematic view showing a conventional clothes dryer.
2 is a control circuit diagram showing a clothes dryer according to a conventional temperature sensor method.
3 is a control circuit diagram showing a clothes dryer according to a conventional humidity sensor method.
4 is a view showing a control configuration of a clothes dryer according to an embodiment of the present invention.
5 is a flowchart illustrating a method of controlling a clothes dryer according to an embodiment of the present invention.
Description of the Related Art [0002]
30: sensing means 31: temperature sensor
32: door open sensor 33: humidity sensor
40: control means 41: main controller
42: heater output controller 43: drive controller
44: humidity controller
50: control panel 51: touch keypad
52: encoder program

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

In addition, in describing this invention, the same code | symbol is attached | subjected and the repeated description is abbreviate | omitted.

First, a control configuration of a clothes dryer according to an embodiment of the present invention will be described with reference to FIG. 1.

As shown in FIG. 1, the control part of the clothes dryer according to the present invention includes a sensing means 30, a control means 40, and an operation unit 50.

The sensing means 30 is a sensor group composed of a plurality of sensors. In particular, it includes a temperature sensor 31 for sensing a temperature in the clothes dryer, a door opening sensor 32 for sensing whether the door of the clothes dryer is opened, a humidity sensor 33 for measuring the humidity in the clothes dryer.

The control means 40 is a group of controllers composed of a plurality of controllers. In particular, the control means 40 includes a heater output controller 42, a drive controller 43, and a humidity controller 44.

The heater output controller 42 controls the output of the heater on / off for a predetermined time after starting the temperature control. That is, during initial temperature control, thermal unbalance and abnormal temperature generation may be suppressed by controlling the heater output on / off to improve the thermal delay phenomenon of the temperature sensor. For this reason, damage to contents (clothing etc.) can be prevented.

The drive controller 43 receives the door opening from the door opening sensor of the sensing means, and cuts off the power of the heater when the door is opened. This releases the heat source in the dryer to the outside when the door is opened, and temporarily stops the driving unit power for the user's safety.

The humidity controller 44 receives the humidity from the humidity sensor of the sensing means and controls the output of the heater according to the humidity.

In other words, in order to reduce the difference in drying capacity in the load capacity, it is possible to make the dry state constant by using the humidity sensor, and to minimize the power loss generated during time control.

On the other hand, the controller in the control means transmits and receives data in a serial communication method. That is, the number of lines can be minimized by adopting serial communication in data communication between multiple controllers.

In addition, the operation unit 50 includes a touch keypad and an encoder program for converting an input of the touch keypad into a control signal of the control means. That is, a touch key (or keypad) and an encoder program (Encoder S / W) are provided in the operation unit for the user's convenience.

On the other hand, the clothes dryer further includes a steam discharger (not shown) for converting the wet steam into water by using the thermoelectric module. Consider built-in installation conditions By converting and discharging wet steam into water using the thermoelectric module method (condensation method), damage to furniture and peripherals can be prevented.

Next, a drying method of a clothes dryer according to an embodiment of the present invention will be described with reference to FIG. 5.

As shown in Figure 5, the drying method of the clothes dryer (a) operating the heater for a predetermined time (hereinafter operating time) (S10), (b) to stop the heater, a predetermined time (hereinafter measurement time) Circulating the air during (S20), (c) measuring temperature and humidity to determine whether the reference value is within the reference value (S30), (d) if the reference value is satisfied, stopping the operation of the heater (S40), and (e) If the reference value is not satisfied, the process is divided into the step (S50) of starting again from step (a).

First, the user inputs a key for operating the clothes dryer through the touch keypad 51 of the operation unit 50. At this time, by the encoding by the encoder program 52, the key input of the touch keypad 51 is switched to the control signal of the control means 40.

When the clothes dryer is operated by the control signal, the heater is operated to preheat the air inside the dryer (hereinafter referred to as the interior), and the preheated air is circulated in the interior. When the temperature reaches the set point, the sensor detects this and activates the circulation fan. Moisture vapor is condensed through the condenser and the thermoelectric element by the circulation fan and discharged to the water storage unit.

In addition, steam (water vapor) generated by heating the water supplied into the dryer with a heater may be discharged to the lower end of the furnace to supply steam into the furnace. The water supply for steam is supplied in a separate bucket.

In addition, sterilization can be carried out simultaneously with drying. That is, when the drying heater is turned off, the ozone generator operates at that time to supply ozone (O ₃ ) to the air to sterilize clothes and shoes in the air.

As described above, the heater is operated for a predetermined time, and the clothes are dried by preheating and circulating the air (S10). At this time, a predetermined time (or a predetermined time) is called an operation time. In other words, the operating time means a time for circulating the air while preheating.

After the operation time, the heater is stopped, and the heater is circulated only for a predetermined time (S20). That is, since the heater is stopped and circulated, the preheated air is evenly distributed throughout the interior of the furnace. The time to circulate only air is called measurement time.

After the measurement time, the temperature or humidity in the store is measured. Since the air will be distributed evenly during the measurement time, the temperature and humidity can be measured more accurately.

As another example, the temperature and humidity may be continuously measured at regular intervals during the measurement time, and then averaged to obtain the temperature and humidity. This can reduce errors in temperature and humidity measurements that may occur temporarily.

On the other hand, since the heater is stopped during the measurement time, it is possible to generate ozone and circulate with the air.

Next, it is determined whether the measured temperature and humidity are within the reference value (or whether the reference value is satisfied) (S30). In other words, the humidity should be lower than the reference humidity and the temperature should be lower than the reference temperature. Higher humidity means less drying, and higher temperatures mean that the heater is too hot.

Therefore, when the humidity is lower than the reference humidity, the drying is terminated (S40). At this time, if the user inputs to operate more time through the operation unit 50, the temperature of the heater may be lowered to enable further operation.

On the other hand, if the temperature is higher than the reference temperature, the preheating temperature is too high may damage the clothes or overheat the device. Therefore, only the air is circulated without the heater running. At this time, only air is circulated for a predetermined time (hereinafter, referred to as a circulation time) and temperature and humidity are measured again. After the end of the cycle, there is no need to cycle again for the measurement time. The reason is that the air is not evenly heated by the heater during the circulation time, so that the air is evenly distributed throughout the chamber. Therefore, humidity and temperature can be measured more accurately.

In addition, if the temperature is lower than the reference temperature or the humidity is higher than the reference humidity, starting again from the first step (S10) for starting the heater (S50). So, run the heater during the run time, and then only circulate the air during the measurement time to measure the temperature and humidity again.

Repeat the above operation.

As mentioned above, although the invention made by this inventor was demonstrated concretely according to the Example, this invention is not limited to an Example and can be variously changed in the range which does not deviate from the summary.

The present invention is useful for developing a clothes dryer that reduces the malfunction of the heater due to the difference between the actual temperature and the sensing temperature due to the thermal delay phenomenon by controlling the output of the heater on / off for a predetermined time after starting the temperature control.

Claims (5)

Sensing means consisting of a plurality of sensors; Control means composed of a plurality of controllers; And, In the clothes dryer comprising an operation unit provided on the outer case,
Wherein,
A heater output controller for controlling the output of the heater on / off for a predetermined time after starting the temperature control; And,
And a drive controller which receives whether the door is opened from the door opening sensor of the sensing unit and cuts off the power of the heater when the door is opened.
The method of claim 1,
And the controller in the control means transmits and receives data in a serial communication manner.
The method of claim 1,
The operating unit includes a touch keypad and an encoder program for converting an input of the touch keypad into a control signal of the control means.
The method of claim 1,
The control means clothes dryer further comprises a humidity controller for receiving the humidity from the humidity sensor of the sensing means to control the output of the heater in accordance with the humidity.
The method of claim 1,
Clothes dryer characterized in that it further comprises a steam discharger for converting the wet steam by using a thermoelectric module to discharge.

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