KR19980066802A - How to prevent freeze of laundry in dry washing machine - Google Patents

Abstract

The present invention relates to a method of preventing a laundry freezing of a dry washing machine to prevent the laundry from being frozen by a low temperature when the dry washing machine is used without a drying stroke after a series of washing administrations is completed.

The present invention provides a drying administration selection step (30) and a drying administration selection step (30) for determining whether a drying administration is selected after completion of a series of washing, rinsing, and dehydration strokes for the laundry put in the initialization state. If this is selected, the washing step 32 performs a drying stroke and completes the washing, and if the drying stroke is not selected, senses the outside temperature, and determines whether the detected outside temperature is below a predetermined freezing temperature. When the freezing temperature is lower than the freezing temperature, the washing is completed. When the freezing temperature is lower, the door is determined to be opened, and when the door is opened, the washing is completed. If the door is not opened, the heater and the blower fan are operated for a predetermined time (5 seconds). Freeze prevention step 36 to prevent the freezing of the laundry by driving on, off, and temporarily freezes for a predetermined time (5 minutes) while preventing freezing in the freeze prevention step 36 Is to be made to the pause step 37, characterized in that the laundry after the completion of the laundry to prevent the freezing by the outside temperature.

Description

How to prevent freeze of laundry in dry washing machine

The present invention relates to a method for preventing the freezing of laundry in a dry washing machine. In particular, when the dry washing machine is used in winter, the laundry is prevented from being frozen by a low outside air temperature when it is left as it is without drying after a series of washing administrations. It relates to a method for preventing the freezing of laundry in a dry washing machine.

In general, a washing machine is a washing machine that is equipped with a heater and a blower fan in a washing machine to dry a laundry after washing, rinsing and dehydrating as well as a series of washing strokes, that is, a series of washing strokes are completed and a drying stroke is set. When the washing machine drives the heater and the blower fan, the heat generated from the heater can be blown to the dehydrated laundry with a blower fan and dried inside the washing tank. That is, the laundry can be dried and worn quickly in a rainy season or in winter. If the dry washing machine used in this way is installed in a relatively low temperature (porch, laundry room) and not in an indoor environment, it is not a problem in summer. The laundry freezes if it is left unwashed from the washing machine. It is good.

Therefore, although the user has to perform the drying administration or take out the drying immediately when the washing is completed in winter, the user often leaves the laundry without taking out the laundry due to carelessness or hastily going out to freeze the laundry. I have a problem.

An object of the present invention is to operate the heater and the blower fan when the laundry is not taken out of the washing machine for a predetermined time after the completion of washing in winter in a state where the dry washing machine is installed in a non-indoor room, and the laundry is driven by a low outside temperature after washing. This is to prevent freezing.

In order to achieve the above object, the present invention determines whether the drying stroke is selected after completion of a series of washing strokes with a dry washing machine, and if the drying stroke is not selected, the outside temperature is sensed, and the detected outside temperature is below the freezing temperature. If it is determined that the outside temperature is not below the freezing temperature, the washing is completed, while if the outside temperature is below the freezing temperature, the door opening state is detected, but the door opening is not detected, the door opening occurs. It is characterized in that the laundry is not frozen by intermittently driving the heater and the blowing fan for a predetermined time until it is.

1 is a longitudinal sectional view of a dry washing machine used in the present invention

2 is a control block diagram of a dry washing machine used in the present invention

Figure 3 is a flow chart for the laundry freezing prevention method of the present invention the washing machine

Explanation of symbols for main parts of the drawings

end; Operation signal input unit b; Micom

All; Drainage and driving part d; Water level detector

hemp; Motor drive bar; Drying part

four; Outdoor temperature sensor

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic longitudinal cross-sectional view of a dry washing machine used in the present invention, a washing tank (1) in which washing water to be supplied during washing is stored, and a washing tank for washing, rinsing, and dehydrating laundry introduced into the reservoir (1). 2), a pulsator (3) for washing and rinsing laundry by forming a washing flow while rotating forward and reverse in the center of the inner bottom surface of the washing tank (2), and in the lower center of the water storage tank (1) 2) and the gear unit 4 for rotating the pulsator 3 forward, reverse and at high speed, the motor 5 generating a rotational force on one side of the gear unit 4, and the outer side of the reservoir 1 Water level sensor 6 for detecting the water level of the water supply and drainage at the lower end, and a heater (7) for generating heat by an electrical signal on the upper portion of the washing tank (2), and the heater (7) Blowing fan (8) and the outside of the water storage tank (1) to suck the heat from the outside to blow into the washing tank (2) The configuration will hayeoseo the temperature sensor 9 for detecting the outside temperature to a predetermined position.

Figure 2 is a schematic control block diagram of a dry washing machine used in the present invention, a driving signal input unit (a) for inputting a driving signal for the washing, rinsing, dehydration and drying operation of a series of washing operations and the driving signal input unit The control signal of the microcomputer (b) and the control signal of the microcomputer (b) perform a series of washing operations by controlling the operation signal input from (a) by a predetermined program and outputting the controlled signal to each part. Water supply and drainage drive (C) for supplying and draining the washing tank, water level detection unit (D) for detecting the water level of the water supplied and drained by the control signal of the microcomputer (B), and control of the microcomputer (B) Washing and rinsing by rotating the pulsator forward and backward in response to the signal, and rotating the washing tank at high speed to the motor drive unit (e) and to the laundry where the dehydration operation is completed by the control signal of the microcomputer (b). It consists of a drying unit (bar) for blowing and drying the heater heat and a temperature sensing unit (4) for sensing the outdoor temperature in the control signal of the microcomputer (b).

3 is a flowchart of a method for preventing laundry freezing of a laundry washing machine of the present invention, the drying administration selection step (30) of determining whether a drying administration is selected when a series of washing operations, washing and rinsing, and the dehydration administration are completed; If the drying stroke is selected in the drying stroke selection step 30, a drying stroke step 31 for performing drying until the drying stroke is completed while driving the heater and the blowing fan, and the drying stroke step 31 If the drying stroke is completed in the laundry completion step 32 to complete a series of washing administration, and if the drying stroke is not selected in the drying administration selection step 30, the outdoor temperature sensing step of detecting the outdoor temperature (33) ), And a freezing temperature determination step 34 for determining whether the outside air temperature detected in the outside air temperature detecting step 33 is a predetermined freezing temperature, and the freezing temperature is not lower than the freezing temperature in the freezing temperature determining step 34. If the washing is completed while maintaining the state, while the freezing temperature, the door opening determination step 35 to determine whether the door opening has occurred, and if the door opening occurs in the door opening determination step 35, washing is performed. On the other hand, if the door is not opened, the freeze prevention step of preventing the freezing of the laundry by the heater heat while driving the heater and the blower fan on and off for a predetermined time (5 seconds) until the door is opened. (36), and a pause step 37 for pausing for a predetermined time (5 minutes) in a state where freezing is prevented in the freeze prevention step 36.

Referring to the operation of the present invention made as described above are as follows.

When the dry washing machine is installed and used at a relatively low temperature, when the laundry to be washed is put in the washing tank 2 and power is supplied to the washing machine, the microcomputer (b) of the dry washing machine is kept in an initializing state. When the driving signal for a series of washing administrations to be washed through the driving signal input unit (a) is inputted to the microcomputer (b), the microcomputer (b) first washes the laundry in order to perform washing according to a predetermined program. Determine the water level according to the water supply by controlling the water supply and drainage drive (C) to the determined water level, while watering while detecting the water supply level through the water level detector (6) of the water level detection unit (D), the water supply is Upon completion, the microcomputer (b) controls the motor 5 and the gear unit 4 through the motor driving unit e and proceeds with washing while the pulsator 3 is rotated forward and backward. When the washing is completed, the microcomputer (b) supplies water to the determined water level, and controls the motor 5 and the gear unit 4 through the motor driving part (e) to reverse the pulsator (3). Rinse a predetermined number of times while rotating (twice) and complete the rinsing. When the rinsing is completed, the microcomputer (b) controls the motor 5 and the gear unit 4 through a motor driving part (e) to wash the tub 2 ) Is rotated at high speed in one direction and dewatered and completed.

When the dehydration is completed, the microcomputer (b) goes to the drying administration selection step (30) to determine whether a signal has been selected for the drying operation from the operation signal input unit (a). If selected, the microcomputer (b) goes to the drying administration step 31 and controls the drying unit (bar) to drive the heater 7 and the blowing fan 8 to blow heat generated from the heater 7. Drying and blowing while blowing to the laundry of the washing tank (2) with a fan (8) to go to the washing completion step 32 to complete a series of washing administration.

However, if the drying stroke is not selected in the drying stroke selection step 30, the microcomputer (b) goes to the outside temperature sensing step 33 and controls the outdoor temperature sensing unit (g) through the temperature sensor (9). The outside air temperature is sensed, and then the process proceeds to the freezing temperature determination step 34 to determine whether the detected outside air temperature is below the freezing temperature. At this time, if the outside air temperature is not below the freezing temperature, the microcomputer (b) washes. Go to the completion step (32) to complete the washing, on the other hand, if the detected outside temperature is less than the freezing temperature, the microcomputer (b) will go to the door opening determination step 35 to determine whether the door opening has occurred. In this case, if the door opening has occurred, the microcomputer (b) determines that the laundry is taken out of the washing tank 2, and then goes to the washing completion step 32 to complete the washing. On the other hand, if the door is not opened, the microcomputer (b) determines that the laundry is left without removing the laundry from the washing tank (2) to go to the freezing prevention step (36) to control the drying unit (bar) By driving the heater 7 and the blower fan 8 for a predetermined time (5 seconds), the heat generated from the heater 7 is blown by the blower fan 8 into the laundry of the washing tank 2 to the laundry. Prevent freezing, and then the microcomputer (b) goes to the pause step 37 and pauses for a predetermined time (5 minutes), and again detects the outside air temperature from the outside air temperature detection step 33, While detecting the door opening is repeatedly performed while blowing the heater heat until the laundry is taken out from the washing tank (2) to prevent the laundry from freezing in the washing tank (2).

As described above, the present invention determines whether the outside temperature is below the freezing temperature if the drying stroke is not selected after a series of washing strokes are completed with a dry washing machine, and if the outside temperature is not below the freezing temperature, the laundry is kept in a finished state. On the other hand, if the outside temperature is less than the freezing temperature, by detecting the door open state by driving the heater and the blowing fan for a predetermined time until the door opening occurs to prevent the laundry freezing, after washing in the winter If the laundry is left inside the washing tank carelessly will be able to prevent the freezing of the laundry by the outside temperature.

Claims (1)

If the drying administration is selected in the drying administration selection step (30) and the drying administration selection step (30) to determine whether the drying administration is selected after a series of washing, rinsing, and dehydration strokes for the laundry put in the initialization state Drying administration step 31 to perform a drying stroke by driving a heater and a blower fan, washing completion step 32 to complete a series of washing strokes when the drying stroke is completed in the drying stroke step 31, and the drying If the drying stroke is not set in the administrative selection judging step 30, a freezing temperature judging step 34 for detecting an outside air temperature and determining whether the detected outside air temperature is below a predetermined freezing temperature, and the freezing temperature judging step If the freezing temperature is not lower than the freezing temperature in (34), and if the freezing temperature is lower than the freezing temperature in the freezing temperature determination step (34), it is determined whether the door opening has occurred, and if the door opening occurs, washing is performed. When the door opening is not completed, the freeze prevention step 36 of driving the heater and the blower fan on and off for a predetermined time (5 seconds) until the door opening is generated and preventing freezing of laundry. The freeze preventing step of the laundry washing method of a dry washing machine, characterized in that the freeze prevention step (36) is made of a pause step (37) to pause for a predetermined time (5 minutes) in the state of preventing freezing.