KR0137491B1 - Dish washer - Google Patents

Abstract

The present invention relates to a hot air control device and a method of controlling the dish dryer, which is a method of setting a user's arbitrary time to dry through a heating element and a blowing fan, which consumes more power than necessary, and sets a time required for drying the dish. In this shortage, it is conceived to solve the problem of the conventional dish dryer, which results in the growth of bacteria by the remaining water.

According to the present invention, when the hot air drying mode is set, the heater and the pressure regulating motor are automatically controlled according to whether or not the set pressure is reached through the pressure detection in the drying chamber. Therefore, the moisture of the surface of the dishes stored in the drying chamber can be dried efficiently.

In addition, the present invention enables the on / off control of the shock heater and the pressure regulating motor by pressure sensing so that only proper power can be consumed at all times, thereby reducing the power loss more than necessary, and by driving the pressure regulating motor, The release of moisture to the outside provides an effect that can effectively suppress the growth of bacteria.

Description

Hot air control device of dish dryer and its control method

1 is a configuration diagram of a hot air control device of the dish dryer of the present invention.

Figure 2 is a flow chart for explaining the operation of the hot air control method of the dish dryer of the present invention.

Explanation of symbols on the main parts of the drawings

10: key input unit. 20: pressure sensor unit. 30: tableware detector.

40: Heater drive part. 50: Micom. 60: motor drive part.

70: sterilization light drive unit. 80: data storage.

The present invention relates to a hot air control technology of a drying type dish dryer using a vacuum method, and more particularly, hot air drying control is sequentially performed in ultraviolet sterilization according to whether the hot air drying mode is set, and the pressure sensing of the dryer drying chamber is performed. Accordingly, the present invention relates to a hot air control device for a dish dryer and a control method thereof, which enable automatic control of a heater and internal pressure control.

In general, the dish dryer is increasingly used as a kitchen appliance to dry the surface of a tableware after a predetermined dish washing process by an action such as a dishwasher or washing dishes by artificial hot air supply.

A basic configuration of such a dish dryer includes a main body, a drying chamber for storing shelf-shaped dishes in the main body, a heating element for providing a drying heat source to the storage table of the drying chamber, and air heated from the heating element in the drying chamber. And a blower for supplying, and control means for controlling the heating element and the blower.

In the hot air control configuration of the dish dryer, a timer having an on / off function and a control unit for driving the heating element and the blower fan by the time set for the timer and turning off the heating element and the blower fan when the set time elapses.

However, the conventional dish dryer having the above-described configuration sets the user's arbitrary time to dry through the heating element and the ventilation fan, which is a method of setting the predictive time for the complete removal of the moisture on the surface of the dish. This has the disadvantage of being consumed.

In addition, when the time setting required for drying dishes is insufficient, there are various problems in hygiene, such as the result of breeding bacteria by residual moisture.

Therefore, the present invention has been made to effectively solve the above-mentioned general problems of the prior art, the purpose of the hot air drying control in the ultraviolet sterilization according to the setting of the hot air drying mode, as well as the heater and pressure in accordance with the pressure sensing of the dryer drying room The hot air control device and the control method of the dish dryer are designed to solve the inconvenience of simultaneous use to shorten the drying time by automatically adjusting the internal pressure, and to suppress the propagation of bacteria and reduce the power consumption by the vacuum drying method of the internal pressure. In providing.

The present invention for achieving the above object is a user operation key input unit having a power switch and hot air drying mode key; A dish detecting unit for detecting the presence or absence of tableware stored in the drying chamber; An ultraviolet sterilizing lamp blinker for lighting the ultraviolet sterilizing lamp for a predetermined time when the tableware is accommodated during the drying; A pressure sensor for detecting internal pressure of the drying chamber; A microcomputer for collectively controlling the general functions of the hot air drying mode according to the input of the key input signal and the two sensing signals; A breakdown voltage regulating motor driver for turning on / off the breakdown pressure regulating motor according to the control signal of the microcomputer; A heater heater for turning on / off a heating element and a blower fan of hot air drying according to the control signal of the microcomputer; A pressure setting value inside the drying chamber and a lighting setting time data such as an ultraviolet sterilization lamp are stored, stored, and provided with a data storage unit for supplying data.

In addition, the method of the present invention includes a first step of blinking the ultraviolet sterilization lamp in accordance with whether the power supply and tableware detection;

A second step of increasing the pressure in the drying chamber by continuously disinfecting ultraviolet rays or driving a heater in accordance with the presence or absence of a hot air drying mode key of the key input unit;

A third step of comparing the set pressure value stored in the data storage unit with the detected pressure value of the pressure sensor to determine the magnitude;

A fourth step of, when the detected pressure value reaches the set pressure value, driving the heater off and driving the internal pressure regulating motor simultaneously;

After the operation of the pressure regulating motor is characterized in that it consists of a fifth process for re-compare the internal pressure and the set pressure value in the drying chamber to determine whether or not to turn off the pressure regulating motor according to the magnitude.

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

1 is a view showing the configuration of a hot air control device for a dish dryer of the present invention, wherein the key input unit 10 is composed of a hot air dry mode key K and a power switch SW.

The hot air drying mode key K is designated by the user, and when this key is specified, the microcomputer 50 drives the fan heater through the fan heater 70 and the pressure of the fan heater of the fan heater 70. The microcomputer 50 determines that the detected pressure value of the sensor 30 reaches or reaches the set pressure.

In addition, the UV sterilization lamp blinker 40 is controlled by the microcomputer 50 according to whether the dish detector 20 detects the power after the power is supplied, and the pressure resistance motor driving unit 60 is detected by the pressure sensor 30. When the internal pressure is larger than the set pressure stored in the data storage unit 80, the internal pressure is turned off, and when the internal pressure is small, the reverse pressure is turned on.

In the above, the dish detector 20 is selectively installed among weight, touch sensor, or light sensor, which is configured to detect interlocking with respect to the tray for storing the dish, and the pressure sensor is installed in the drying chamber. do.

In addition, when the internal pressure detected by the pressure sensor 30 is less than the set pressure stored in the data storage unit 80, the heater heater 70 is driven until the detected pressure reaches the set pressure. .

2 is a flow chart for explaining the operation of the hot air control method of the dish dryer of the present invention.

In a first step of the method of the present invention, it is determined whether the power switch of the key input unit 10 is turned on (S1), and whether the tableware is stored in the tray through the dish detector 20 after supplying power. When the tableware is stored in the tray in the step (S2) and the dish storage detection determination step (S2), the step of turning on the ultraviolet sterilization lamp flasher 40 through the microcomputer 50 (S3).

In the second process of the present invention, the step of determining whether or not the hot air dry mode key input of the key input unit (S4), and if the hot air dry mode key signal is not input in this step (S4) UV sterilization lamp driving unit 40 Le continuous lighting to perform ultraviolet sterilization and the hot-air drying mode key signal is input (S5) to drive the heater driver 70, and after the fan heater 70 is driven through the pressure sensor 30 Checking the drying chamber pressure is made (S6).

In addition, the third process of the present invention includes comparing the current detection pressure detected by the pressure sensor 30 with the set pressure stored in the data storage unit 80 (S7), and the detection pressure in the comparison step (S7) If the set pressure has not been reached, the step S7 of comparing the current detection pressure with the set pressure stored in the data storage unit 80 is continued in the step S5 of driving the heater driving unit 70.

In addition, in the fourth process of the present invention, when the detection pressure reaches the set pressure in the comparison step (S7) of the third process, the step (S8) of turning off the heater driver 70 and the pressure resistance regulating motor driver ( 60) is made to adjust the pressure in the drying chamber to a low pressure state (S9) is made.

In addition, the fifth process of the present invention includes the step (S10) of checking the pressure in the drying chamber from the pressure sensor 30 after driving the pressure-resistant regulating motor, and the detection of the pressure sensor 30 checked in this step (S10) Re-comparison and determine the pressure and the set pressure stored in the data storage unit 80 (S11), and if the detected pressure is less than the set pressure in the determination step (S11), turn on the pressure adjusting motor drive unit 60 and the detection pressure When the set pressure is reached, the step S12 of turning off the pressure regulating motor driving part 60 and the shock heater driving part 70 increasing the internal pressure of the drying chamber after turning off the pressure regulating motor driving part 60 in this step S12. It is made to return to the step of driving (S5).

In the operation of the present invention configured as described above, when the power switch is first turned on through the key input unit 10 (S1), the microcomputer 50 has a dish storage tray in a state in which power required for each function is supplied through a power supply port not shown. The state of the dish detector 20 installed in the check is checked (S2).

At this time, if there is no tableware from the dish detector 20, the microcomputer 50 is regarded as no need for drying and controls to end the dish drying function.

However, if the dishes are stored from the dish detector 20, the microcomputer 50 turns on the ultraviolet sterilizing lamp blinker 40 to turn on the ultraviolet sterilizing lamp (S3).

By this operation, the bacteria propagation of the dishes stored in the drying chamber can be suppressed and the hygiene state is improved.

On the other hand, after the UV sterilization lamp flasher 40 is turned on, if the hot air drying mode key of the key input unit 10 is not specified, the microcomputer 50 controls to repeat the above UV sterilization process repeatedly, When the hot air drying mode key designation signal of the key input unit 10 is input (S4), the microcomputer 50 controls the fan heater 70 to be turned on to operate the fan heater (S5).

In this operation, the hot air pressure inside the drying chamber is gradually increased to dry the stored dishes.

When the drying chamber internal pressure is increased as described above, the microcomputer 50 reads the current drying chamber internal pressure from the pressure sensor 30 (S6) to determine whether the set pressure value stored in the data storage unit 80 is reached (S7). )

At this time, if the detection value of the drying chamber by the pressure sensor 30 is less than the set pressure value set in the data storage unit 80, the microcomputer 50 continues to turn on the heater drive unit 70 to increase the pressure inside the drying chamber. When the detected pressure value reaches the set pressure value, the heater drive unit 70 is turned off (S8) and the internal pressure adjusting motor drive unit 60 is turned on (S9).

The internal pressure regulating motor is driven by the on (S9) operation of the internal pressure regulating motor driving unit 60 to gradually discharge the air in the drying chamber to the outside, and a large amount of moisture due to the moisture evaporated on the surface of the dish is also released to the outside. do.

In this operation, the air and moisture discharge process is maintained until the detection pressure of the pressure sensor 30 installed in the drying chamber is lower than the set pressure stored in the data storage unit 80. By checking the continuous detection pressure value from the pressure sensor 30 (S10) it is determined whether the pressure is reached (S11).

When the detection pressure of the pressure sensor 30 reaches the set pressure stored in the data storage unit 80 as a result of the determination (S11), the microcomputer 50 controls the internal pressure adjusting motor drive unit 60 to be turned off, and then again. It is to act to return to the step (S5) to turn on the heater heater 70 of the hot air drying mode.

As described above, in the present invention, when the hot air drying mode is set, the heater and the pressure regulating motor are automatically controlled according to whether or not the set pressure is reached through the pressure detection in the drying chamber. It is possible to maintain and dry the surface of the tableware stored in the drying chamber efficiently.

In addition, the present invention is able to control the heat heater and the pressure-resistant motor by pressure sensing, so that it is possible to always consume only the appropriate power, thereby reducing the power loss more than necessary, and also by driving the pressure-controlled motor The release of moisture to the outside provides an effect that can effectively suppress the growth of bacteria.

Claims (7)

A user operation key input unit 10 having a power switch and a hot air drying mode key; A dish detector 20 for detecting the presence or absence of tableware stored in the drying chamber; A pressure sensor 30 for detecting the internal pressure of the drying chamber; An ultraviolet sterilizing lamp flasher 40 for lighting an ultraviolet sterilizing lamp for a predetermined time when the tableware is stored in the drying chamber; A microcomputer 50 for controlling the general functions of the hot air drying mode according to whether the key input signal and the two sensing signals are input; An internal pressure regulating motor driver 60 for turning on / off the internal pressure regulating motor according to the control signal of the microcomputer; A heater heater 70 for turning on / off a heating element and a blower fan of hot air drying according to the control signal of the microcomputer; And a data storage unit (80) for storing the set pressure of the internal pressure and the setting time data of the ultraviolet sterilization lamp and supplying the stored data. A first step of blinking an ultraviolet sterilizing lamp depending on whether power is supplied and tableware detection; A second step of increasing the pressure in the drying chamber by continuously disinfecting ultraviolet rays or driving a heater in accordance with the presence or absence of a hot air drying mode key of the key input unit; A third step of comparing the set pressure value stored in the data storage unit with the detected pressure value of the pressure sensor to determine the magnitude; A fourth step of, when the detected pressure value reaches the set pressure, driving the heater off and simultaneously operating the internal pressure regulating motor; And a fifth process of comparing the internal pressure and the set pressure value in the drying chamber after the driving of the pressure regulating motor to determine whether the pressure regulating motor is turned on or off according to its magnitude. The method of claim 2, wherein the first process includes determining whether the power switch of the key input unit 10 is turned on (S1), and detecting whether the tableware is stored in the tray through the dish detector 20 after the power is supplied. When the dishes are stored in the tray in the step (S2) and the determination of storing the dishes (S2), the step of turning on the ultraviolet sterilization lamp flasher 40 through the microcomputer 50 (S3) Hot air control method of the dish dryer. The method of claim 2, wherein the second process includes determining whether the hot air drying mode key is input in the key input unit (S4), and if the hot air drying mode key signal is not input in this step (S4), the UV sterilization lamp driver 40 UV light sterilization is performed continuously and the hot air drying mode key signal is input (S5) to drive the heater driver 70, and the pressure sensor 30 is driven after the heater heater 70 is driven. Hot air control method of the dish dryer, characterized in that the step of checking the drying chamber pressure (S6). The method of claim 2, wherein the third process includes comparing the current detection pressure detected by the pressure sensor 30 with the set pressure stored in the data storage unit 80 (S7), and detecting in the comparison step S7. When the pressure does not reach the set pressure, in step S5 of driving the heater driving unit 70, the step S7 of comparing the current detection pressure with the set pressure stored in the data storage unit 80 is continued. Hot air control method of the dish dryer characterized by the baggage. The method according to claim 2 or 5, wherein the fourth step comprises the step (S8) of turning off the heater driver 70 when the detection pressure reaches the set pressure in the comparison step (S7) of the third step, Method of controlling the hot air of the dish dryer, characterized by comprising the step (S9) of adjusting the pressure to a low pressure state inside the drying chamber by driving the pressure-resistant adjustment motor drive (60). The method of claim 2, wherein the fifth process includes the step (S10) of checking the pressure in the drying chamber from the pressure sensor (30) after driving the internal pressure regulating motor and the pressure sensor (30) checked in this step (S10). Re-comparison and determine the detected pressure and the set pressure stored in the data storage unit 80 (S11), and if the detected pressure is less than the set pressure in the determination step (S11), turn on the pressure-resistant regulating motor drive unit 60 and detect it. When the pressure reaches the set pressure step (S12) to turn off the pressure-resistant adjustment motor drive unit 60, and the shock heater drive unit 70 for increasing the dry chamber internal pressure after turning off the pressure-resistant adjustment motor drive unit 60 of this step (S12). Hot air control method of the dish dryer, characterized in that made to return to step (S5) to drive.