KR100211261B1 - Dishwasher of a dry apparatus and method - Google Patents

Abstract

According to the present invention, the drying steam is rapidly discharged to the outside of the washing chamber during the drying operation of the series of dish washing operations, and then the warm air is blown to discharge the wet air, and then the cold air is blown to dry, thereby improving drying efficiency of the dishes. The present invention relates to a drying apparatus and method of a dishwasher capable of greatly improving the present invention. The present invention performs a hot water rinsing during drying in a series of washing administrations, and after the hot water rinsing is completed, drains and opens a steam outlet, inhales cold air, and blows it. The cold air blowing step 43 forcibly discharging unsaturated water vapor for a predetermined time (5 minutes), and when the cold air blowing is completed by determining whether the suction air of the cold air is completed, partially closes the steam outlet and heats it with a hot air heater. Hot air blowing step (45) and the hot air blowing to discharge the humid air in the washing chamber by blowing for a time (10 minutes) of the If the warm air heater is turned off, the drying step 47 of blowing cold air to dry the air, and detecting the temperature of the washing room while blowing cold air in the drying step 47, the predetermined temperature of the detected washing room is preset. The washing room temperature determination step 49 for determining whether the temperature is 35 ° C., and when the detected temperature is a predetermined temperature (35 ° C.), the blower fan is turned off to stop the cold air blowing and complete drying. It is characterized in that to complete the step (50) to improve the drying efficiency.

Description

Drying device and method of dishwasher

The present invention relates to a drying apparatus and method for a dishwasher, and in particular, during the drying cycle of a series of dishwashing operations, after discharging unsaturated steam to the outside air in a washing chamber and quickly discharging it, the hot air is blown out to discharge the humid air, and then cold air. It is related to a drying apparatus and method for a dish washer that can greatly improve the drying efficiency of the dish by blowing and drying it.

In general, the drying performance of the dishwasher is greatly different depending on how the unsaturated humidity vapor in the washing room is discharged to the outside after the hot water rinsing. Looking at the drying method, the first step is to leave the water to dry naturally after rinsing. Second, there is a method of blowing cold air into the inside of the washing room after rinsing the hot water and drying it by the temperature difference. Third, there is a method of drying while blowing hot air into the washing room after rinsing hot water.

However, in the case of the first method there is no ventilation openings to the outside to dry naturally while being sealed in the sealed interior has a very bad drying efficiency, the second method is a method that is currently used in the dishwasher continuously to the outside cold air continuously If it is blown in, it is effective to discharge the high temperature wet steam to the outside at first, but there is a problem that can not remove the moisture on the surface of the dish, and in the case of the drying method of continuously blowing the third warm air, the first to release the wet steam. While it is not effective, it is effective to remove moisture from the surface of the tableware after a predetermined time (5 minutes), but if it is continuously blown with warm air, the internal temperature is high at the time of drying and the relative humidity is low, but the tableware cools down. Relatively high humidity causes moisture in the washroom to condense on the surface of dishes Is generated if the problem is not so can improve the drying efficiency.

An object of the present invention is to blow dry air to quickly discharge unsaturated water after rinsing hot water during the drying stroke in a series of washing strokes, and then blow dry air to blow dry air to dry again, drying The relative humidity can be lowered to greatly improve the drying efficiency.

In order to achieve the above object, the drying apparatus of the present invention is equipped with a temperature sensor for sensing the temperature of the washing chamber on the inner wall of the washing chamber, and equipped with a warm air heater under the rear blowing fan of the washing chamber, The steam outlet is installed on the upper side of the front door, and one side of the steam outlet is characterized in that it is equipped with a steam outlet solenoid.

The drying method of the present invention for realizing the above object is a step of opening the steam outlet after hot water rinsing during the drying stroke in a series of washing strokes and sucking the outside air for a predetermined time to discharge the unsaturated steam to the cold, the unsaturated in the step After discharging the steam, partly close the steam outlet and blow out the hot air for a predetermined time, and discharge the wet air after the hot air blowing is completed in the step, and stop the warm air until the predetermined temperature of the washing chamber is maintained. It is characterized in that it comprises a step of drying by blowing, and stopping the cold air blow and complete drying if a predetermined temperature is maintained in the step.

1 is a schematic longitudinal cross-sectional view of the present invention dishwasher

Figure 2 is a control block diagram for the drying apparatus of the present invention dishwasher

3 is an absolute humidity steam diagram according to the temperature used in the present invention

Figure 4 is a flow chart for the drying method of the present invention dishwasher

* Explanation of symbols for main parts of the drawings

1: washing room 2: injection nozzle

3: heater 4: pump

5: blowing fan 6: door

7: steam outlet 8: cleaning chamber temperature sensor

9: warm air heater 10: steam exhaust solenoid

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

1 is a schematic longitudinal sectional view of a dishwasher applied to the present invention, the washing chamber 1 to be washed dishes and washing water while rotating by the pumping force to the inner lower center of the washing chamber (1) By injecting the spray nozzle (2) for injection, the heater (3) for heating the water supplied to one side lower portion of the injection nozzle (2), and the wash water collected in the lower one side of the washing chamber (1) by the pumping force A pump 4 discharged to the injection nozzle 2, a blowing fan 5 for sucking outside air to the upper one side wall of the washing chamber 1, and a steam outlet at the front upper end of the washing chamber 1 In the dishwasher equipped with a door (6) having a 7),

The washing chamber temperature sensor 8 which detects the internal temperature of the washing chamber at a predetermined position on the inner wall of the washing chamber 1 and the warm air heater 9 which generates heat inside the lower air vent of the blower fan 5. And a steam discharge solenoid 10 for opening and closing the steam discharge at one side of the steam discharge port 7 of the door 6.

FIG. 2 is a control block diagram of a drying method of a dish washing machine of the present invention, wherein a driving signal input unit (A) for inputting a driving signal for a series of washing strokes and a driving signal input from the driving signal input unit (A) are provided. A microcomputer (b) for controlling and outputting a signal controlled by a predetermined program, a water supply / drainage driver (c) for supplying and draining washing water according to the control signal of the microcomputer (b), and the water supply / drainage driver ( C) a water level detection unit (D) for detecting the water level of the water supplied and drained from the water supply; and a pump driving unit (E) for pumping the washing water supplied by the control signal of the microcomputer (B) and spraying the water to the injection nozzle; A heater driving part (bar) for heating the washing water supplied from the water supply driving part (c) to a heater heat, a washing room temperature sensing part (g) for detecting a washing room temperature according to the control signal of the microcomputer (b), and the microcomputer (B) a warm air heater driver for heating the heat of the washing chamber during drying to the control signal of (b), a blower fan driver (h) for sucking outside air while rotating by the control signal of the microcomputer (b), and It is composed of a steam discharge solenoid driving unit (car) which controls the opening and closing of the steam discharge port by the control signal of the microcomputer (b).

Figure 3 shows the steam diagram of the absolute humidity according to the temperature used in the present invention, that is, the internal state of the washing chamber at 70 ℃ the internal temperature of the washing chamber to maintain a saturation state of 100% relative humidity, The air inside the cleaning chamber contains moisture as much as the absolute humidity (X1). Thus, when the absolute humidity (X1) contained in 100% of the relative humidity with respect to the internal temperature of 70 ° C of the washing chamber is exhausted and lowered to the absolute humidity (X2), the relative humidity at the internal temperature of the washing chamber at 35 ℃ is 60% It is to be shown.

Figure 4 is a flow chart for the drying method of the dishwasher of the present invention, a hot water rinsing step 40 to perform a hot water rinse at 75 ℃ during drying of a series of washing strokes, and the hot water rinsing in the hot water rinsing step 40 If the completion of the hot water rinsing determination step 41 to determine whether the completion, and the hot water rinsing in the hot water rinse completion determination step 41, the drainage step 42 and the draining step 42 The cold air blowing step 43 of forcibly discharging unsaturated water vapor for a predetermined time (5 minutes) by opening the steam outlet and inhaling cold air, and whether the suction air blowing of the cold air is completed in the cold air blowing step 43 is completed. When the cold air blowing is completed in the cold air blowing completion determination step 44 and the cold air blowing completion determination step 44, the steam outlet is partially closed, and the heat is blown by a hot air heater for a predetermined time (10 minutes) to remove the cold air blowing inside the washing chamber. Wet ball Hot air blowing step (45) for discharging the hot air blowing step, judging whether or not the hot air blowing is completed in the hot air blowing step 45, 46, and hot air blowing in the hot air blowing completion step 46 When complete, turn off the hot air heater, the drying step 47 for blowing and drying the cold air, and the washing room temperature detection step 48 for sensing the temperature of the washing chamber while blowing the cold air in the drying step 47, In the washing room temperature determining step 49 and the washing room temperature determining step 49 determining whether the washing chamber temperature detected in the washing room temperature detecting step 48 is a predetermined temperature (35 ° C.). If the sensed temperature is a predetermined temperature (35 ℃) is to be made to the drying completion step 50 to stop the blowing fan to stop the cold air blowing to complete the drying.

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

First, the dish to be washed is put in the washing room (1), the power is supplied to the dishwasher, and the driving signal input to the microcomputer (B) through the driving signal input unit (A), the microcomputer (B) Is controlled by a predetermined program for the washing operation signal input and outputs the controlled signal to the water supply / drainage driver (C) to supply water, while supplying water while detecting the water level supplied through the water level detection unit (D). When the water supply is completed at a predetermined level, the heater driving unit (bar) is controlled to heat the washing water supplied to the heater (3) to a predetermined water temperature, and to control the pump driving unit (e) to the pump (4). The heated watered washing water is pumped into the spray nozzle 2 to carry out the washing, and when the washing is completed, go to a rinsing stroke (not shown) to supply water and drive the pump 4 to rinse a predetermined number of times. Ongoing.

Subsequently, when the rinsing is completed a predetermined number of times, the drying stroke is performed by a predetermined program in the microcomputer (B), that is, when the drying stroke is started, the hot water rinsing step in the microcomputer (B) ( 40, the heater 3 is driven through the heater driving part (bar), and the washing water is sprayed on the dish while heating the washing water to a predetermined water temperature (75 ° C.), and then the hot water rinsing completion determination step 41 It is determined whether the hot water rinsing is completed, but if the hot water rinsing is not completed, continue to perform a hot water rinsing, and if the hot water rinsing is completed, go to the drainage step 42 to control the water supply and drainage drive (C) to the hot water rinsing water Drained.

When the drainage of the hot water rinsing water is completed as described above, the microcomputer (b) goes to the cold air blowing step 43 and controls the steam discharge solenoid driving unit (car) to control the steam discharge solenoid at one side of the steam outlet 7 provided in the door 6. Driving the blower fan (5) to drive the blower fan (5) to inhale outside air, blow air into the washing chamber (1), and rinse the hot water. The unsaturated steam generated in the washing chamber (1) is blown through the open steam discharger (7), at which time cold air is blown for a predetermined time (5 minutes) to discharge the unsaturated steam.

While the cold air is blown out as described above, the microcomputer (b) goes to the cold air blow completion determination step 44 to determine whether the cold air blow is completed for a predetermined time (5 minutes), and the cold air blow is predetermined. It will blow until the time (5 minutes) is completed.

Subsequently, when the predetermined cold air blowing is completed, the microcomputer (b) goes to the hot air blowing step 45 and controls the steam discharge solenoid driving unit (car) to discharge steam on one side of the steam outlet 7 provided in the door 6. The solenoid 10 is driven to close a part of the open steam outlet 7, and the hot air heater driving part is controlled to drive the hot air heater 9, and the blower fan driving part is controlled to blow the fan. (5) to drive the heat of the hot air heater (9) to the washing chamber (1) to blow the humid air in the washing chamber (1) through the partially opened steam discharger (7), wherein the predetermined predetermined The humid air is discharged while blowing heat for a period of time (10 minutes).

While the hot air is blown out as described above, the microcomputer (b) goes to the hot air blowing completion determination step 46 to determine whether the hot air blow is completed for a predetermined time (10 minutes), and the hot air blow is predetermined. It will blow until the time (10 minutes) is completed.

When the hot air blowing is completed as described above, the microcomputer (b) stops the operation of the hot air heater 9 by controlling the hot air heater driving part to go to the drying step 47 in order to lower the rising temperature of the washing chamber 1 and to dry it. In addition, by controlling the blower fan drive unit (H) to drive the blower fan (5) to inhale cold air, and blown into the humid air heated in the washing chamber (1) and discharged through the open steam outlet (7) While drying the washing chamber 1 while lowering the internal temperature to a predetermined predetermined temperature (35 ℃).

While the cold air is blown to the washing chamber 1 as described above, while the drying is performed while lowering the internal temperature of the washing chamber 1, the microcomputer (b) goes to the washing chamber temperature detecting step 48 and the washing chamber temperature detecting unit ( G) control to sense the temperature of the washing room through the washing room temperature sensor (8), and then the microcomputer (b) goes to the washing room temperature determination step (49) to detect the temperature of the detected washing room (1) Is determined whether the predetermined temperature reaches 35 ° C, and if the detected temperature of the washing chamber does not reach the predetermined temperature 35 ° C, drying is continued while blowing cold air. When the sensed temperature reaches a predetermined temperature of 35 ° C., the microcomputer (b) goes to the drying completion step 50 and controls the blower fan driving unit to stop the driving of the blower fan 5 to dry. To complete It is.

As described above, the present invention is equipped with a temperature sensor for sensing the temperature of the washing chamber on the inner wall of the washing chamber, and equipped with a warm air heater under the rear blower fan of the washing chamber, on the upper side of the front door of the washing chamber. A steam outlet is installed, and a steam outlet solenoid is installed at one side of the steam outlet to open a steam outlet after rinsing hot water during the drying stroke in a series of washing strokes to blow cold air for a predetermined time to discharge unsaturated steam, and then partially close the steam outlet. After the completion of the cold air blowing, the hot air is blown out for a predetermined time to discharge the humid air, and then the hot air blowing is stopped, and again, the cold air is blown to dry and completed until the predetermined temperature of the washing chamber is maintained. Relative humidity can be lowered during drying, allowing the tableware to dry while preventing condensation on the tableware caused by the relative humidity. Because that would provide an effect that can greatly improve the efficiency of drying dishes.

Claims (2)

Washing chamber (1) to wash the dishes to be washed, the injection nozzle (2) for spraying the washing water while rotating by the pumping force in the inner lower center of the washing chamber (1), and a heater for heating the water to be washed ( 3), a pump 4 for sucking the washing water with a pumping force and discharging it to the injection nozzle 2, a blowing fan 5 for sucking outside air in the upper one side wall of the washing chamber 1, and the washing In the dishwasher, which is equipped with a door (6) having a steam outlet (7) at the upper end in front of the chamber (1), the internal temperature of the washing chamber is sensed at a predetermined position on the inner wall of the washing chamber (1) Opening / closing steam discharge to the washing chamber temperature sensor 8, the warm air heater 9 to generate heat inside the lower air vent of the blower fan 5, and the steam outlet 7 side of the door 6; Drying device of the dishwasher, characterized in that provided with a steam discharge solenoid (10). When drying during a series of washing operations, perform hot water rinsing at 75 ° C. If the hot water rinsing is completed, drain the water, open the steam outlet, inhale cold air, and blow air to forcibly discharge unsaturated steam for a predetermined time (5 minutes). In step 43 and the cold air blowing step 43, it is determined whether the suction air blowing of the cold air is completed, and when the cold air blowing is completed, the steam outlet is partially closed and air is blown for a predetermined time (10 minutes) by heating with a warm air heater. Hot air blowing step (45) for discharging the humid air in the washing room, a drying step (47) to turn off the hot air heater, blow air to dry if the hot air blowing is completed, and cold air in the drying step 47 Determining whether or not the washing chamber temperature sensing step 48 for detecting the temperature of the washing chamber during the blowing and whether the temperature of the washing chamber detected in the washing chamber temperature detecting step 48 is a predetermined temperature (35 ° C.) wash In the room temperature determination step 49 and the washing room temperature determination step 49, when the detected temperature is a predetermined temperature (35 ° C.), the drying fan is turned off to stop the cooling air blow and complete the drying. Drying method of the dishwasher, characterized in that consisting of (50).

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