KR100314868B1 - Device and method for controlling a water temperature of a dish washer then suppling initial power - Google Patents

Abstract

The present invention relates to a power supply initial washing water temperature control device and method of the dishwasher, in particular, the rinsing water temperature determination unit 71 in the microcomputer (7) performing the overall control function of the dishwasher through a predetermined program; Washing water level determination unit 72, rinsing water level determination unit 73, timer 74, washing water temperature control execution unit 75, rinsing pump drive command unit 76, water supply valve drive command unit 77 and booster The driving command unit 78 is provided to detect the level of the rinsing water before the rinsing water contained in the booster rinsing water tank is introduced into the washing tank because the level of the rinsing water contained in the booster rinsing water tank is not in the full water level. The booster is operated by replenishing the rinsing water by turning on the hydrant valve until the squeezing water is turned on. If it is in the off state, turn off the receiver and in the 'off' state, it detects whether the temperature of the rinsing water is higher than or equal to the predetermined temperature. The rinsing water reaching the predetermined temperature is continuously introduced into the washing tank to improve the washing power during the initial washing, and the heater in the washing tank is operated unnecessarily to prevent power waste due to unavoidable reliability of the product. And it is to be able to significantly improve the merchandise.

Description

Device and method for controlling a water temperature of a dish washer then suppling initial power}

The present invention relates to an initial washing water temperature control device and a method for turning on the power of the dishwasher, and more particularly, before the initial power is supplied to the dishwasher having the booster integrated therein, different from before the washing preparation operation is performed. When the water level in the rinsing water tank is detected through two carbon rods having a length, if the rinsing water cannot be rinsed, the rinsing water is filled by driving the hydrant valve. When the full water level of the washing water is detected by the preparation operation, the temperature of the washing water is always maintained above a certain temperature, thereby improving the washing power during the initial washing. Also, even if the washing water is not washed, the washing water temperature has already reached the predetermined temperature. By operating the installed heater, unnecessary power consumption caused by The invention is to avoid the.

Generally, a dish washing machine has a predetermined volume of a washing chamber formed in a casing, an upper and lower sliding doors are installed at an upper portion of the washing chamber, and a filter for filtering debris contained in the washing water at the bottom of the washing chamber, and a predetermined depth. Washing tank having a heater, which is installed by the heater for maintaining the washing water above a predetermined temperature and at the same time heated by the booster (formed separately from the dishwasher), including a washing water pump for sending the water in the washing tank to the washing nozzle Rinse water pump is installed to send hot water (ie, rinsing water) to the rinsing water nozzle, as well as a motor for detergent and rinse supply, and the upper and lower parts of the washing chamber are sprayed with washing water and rinsing water to dishware. A pair of nozzles for rinsing water and a nozzle for rinsing water are installed, and a shelf for storing various dishes is installed in the middle of the washing tank. Which has a structure.

Therefore, when the user opens the door of the dishwasher, puts the dishes to be cleaned on the shelf, closes the door again, and turns on the power switch, the washing water pump is driven for a predetermined time, so that the water in the washing tank is forced by the washing water pump. And the washing nozzle is rotated by the water pressure of the water sprayed through the water sprayer, and the dishes on the shelf are washed. Then, after a certain time, the driving of the washing water pump is cut off and the rinsing water pump is driven for a predetermined time. The rinsing water, which is the hot water heated by the booster, is forcibly returned by the rinsing water pump, and the rinsing water nozzle is rotated by the water pressure of the water sprayed through the water sprayer, so that the dishes washed on the shelf and primarily washed are rinsed. The water used for washing and rinsing dishes is Is the water exchange with the washing tank after the foreign substances are removed is used to wash the dishes by different future.

On the other hand, when the initial power is supplied to the dishwasher in the above, the water level in the washing tank is detected by the pressure switch, and if the water level is not full, the rinsing pump is driven to prepare the operation of supplying the water heated by the booster to the washing tank. .

However, in the related art, a dishwasher and a booster are separately formed, and a method in which the washing pump in the dishwasher is filled in the washing tank regardless of the water (ie, rinsing water) temperature of the booster is adopted.

In other words, as it has a predetermined volume and is configured to supply water heated by a booster installed outside the washer within a short time, direct water is supplied into the washing tank even before it is heated by the booster. The temperature of the wash water, which must be kept above 60 ℃, may be lowered below a predetermined temperature (eg, 50-40 ℃), and when the water level is detected while the temperature of the wash water is lowered below a certain temperature, If the washing is not recognized without causing factors such as foaming in the washing water, there is a problem that the washing power is also lowered.

Therefore, conventionally, in order to prevent this, a heater having a relatively high power consumption (2-2.5 kW) is installed in a washing tank so that the heater is driven when the temperature of the washing water is lower than a predetermined temperature. In addition to the waste, the washing pump having a power consumption of about 0.75-1.2 kW and a rinsing pump having a power consumption of about 0.3 kW is operated while the heater is operating as described above, so that the earth leakage breaker is overloaded. There is a problem such as falling.

In addition, when the heater, the washing pump and the rinsing pump are operated at the same time as described above, the total power consumption is about 3-3.5㎾, so the washing machine cannot be connected through a general plug, and electrical wiring must be made through a separate switchboard. There were also a lot of problems.

The present invention has been made in order to solve the above problems, it is determined whether the rinsing water can be rinsed through the carbon rod before performing the initial preparation operation when the dishwasher is powered on, if the rinsing water can not be driven to rinse water When the rinsing water is filled to some extent, the booster performs the combustion operation of the booster so that the rinsing water temperature reaches a certain temperature so that the preparation operation can be performed so that the temperature of the washing water is always kept above a certain temperature when the full water level is detected. In addition, it is possible to improve the cleaning power during the initial cleaning and also to prevent unnecessary power waste due to unnecessary operation of the heater installed in the washing tank since the temperature of the washing water has already reached a certain temperature even if the washing is not performed. Temperature control of the initial wash water in the dishwasher Value and to provide a method has its purpose.

The object of the present invention, the rinse water temperature determining unit, the washing water level determination unit, the rinsing water level determination unit, the timer, the washing water temperature control unit, the rinsing pump and the water in the microcomputer to perform the overall control function of the dishwasher through a predetermined program It is equipped with a solenoid valve and a booster driving command unit, and when the initial power is turned on, it detects whether the washing water in the washing tank is full water level, and if it is not full water level, it detects whether the rinsing water stored in the rinsing water tank of the booster is low water level. Replenish the rinse water, and if the rinse water is not low, allow the combustion operation to take place until the temperature of the rinse water reaches a predetermined temperature, and when the rinse water reaches the predetermined temperature, run the rinse pump for a certain time and stop it. Repeat the operation and rinse water into the wash tank until the wash tank reaches full level. It can be achieved by to enter the standby state.

Therefore, when the rinsing water temperature reaches a certain temperature, the preparation operation is performed, so when the full water level of the washing water is detected, the temperature of the washing water is always maintained above a certain temperature, thereby greatly improving the washing power during the initial washing and of course, even without washing. Since the temperature of the washing water has already reached a certain temperature, the heater installed in the washing tank is operated unnecessarily, thereby preventing unnecessary waste of power.

1 is an overall block diagram of a dish washer controller to which the present invention is applied.

2 is a detailed block diagram of a device of the present invention;

3 is a flowchart for explaining the method of the present invention.

Explanation of symbols on the main parts of the drawings

1: Door opening and closing detection unit 2: First water level detection unit

3: 2nd water level detection part 4: Power electronic valve drive part

5 oscillation part 6 reset circuit part

7: microcomputer 8: self-test and optional switch unit

9: washing pump 10: washing pump relay drive circuit

11: rinsing pump 12: rinsing pump relay drive circuit

13: bimetal 14: heater

15: heater relay drive circuit 16: detergent supply motor

17: rinse supply motor 18: display and switch input

19: breaker 20: booster drive circuit

21: Thermistor input circuit 71: Rinse water temperature determination unit

72: washing water level determination unit 73: rinsing water level determination unit

74: timer 75: wash water temperature control unit

76: rinsing pump drive command unit 77: water receiver valve drive command unit

78: booster drive command unit

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

1 is a block diagram illustrating an overall block diagram of a dish washer controller to which the present invention is applied.

According to this, the door opening and closing detection unit 1 for detecting whether the door is opened or closed through the door switch; A first level detector (2) for detecting the water level in the washing tank through a pressure switch; and a second level detector (3) for detecting the low and full water level in the rinsing water tank through two carbon rods having different lengths; A hydraulic valve driver 4 for controlling the supply of the washing water and the rinsing water; An oscillator 5 for generating a clock pulse of a predetermined frequency; A reset circuit section 6 for resetting initial predetermined data, programs, and the like; A microcomputer 7 performing overall control of the dishwasher through a predetermined program; A self test and option switch unit 8 connected to the microcomputer 7 to select a self test function; A washing pump relay (9a) driving circuit unit (10) for controlling the driving of the washing pump (9) under the control of the microcomputer (7); A rinsing pump relay (11a) driving circuit unit (12) for controlling the driving of the rinsing pump (11) under the control of the microcomputer (7); A heater relay (14a) driving circuit unit (15) for controlling the driving of the heater (14) connected in series with the bimetal (13) by controlling the microcomputer (7); A detergent supply motor 16 for selectively supplying detergent to washing water under the control of the microcomputer 7; A rinse supply motor 17 for selectively receiving the microcomputer 7 and supplying detergent to rinsing water; A display and switch input unit 18 for displaying various operating signals under the control of the microcomputer 7 and inputting various signals; A circuit breaker 19 for cutting off a power supply voltage during an overload; A booster driving circuit section 20 including a combustion fan driving circuit, an igniter driving circuit, and several magnet valve driving circuits controlled by the microcomputer 7 including a flame detection circuit and the like; It consists of thermistor input circuit 21 which detects the temperature of a rinse water with an electrical signal.

FIG. 2 shows a detailed block diagram of the apparatus of the present invention, whereby the rinsing water temperature determination unit 71 determines the temperature of the rinsing water through a signal output from the thermistor input circuit 21 in the microcomputer 7. Wow;

A washing water level determining unit (72) for receiving the output signal of the first water level detecting unit (2) to determine the level of the washing water;

A rinsing water level determining unit (73) for receiving the output signal of the second water level detecting unit (3) to determine the level of the rinsing water;

A timer 74 for inputting time data necessary for driving the rinsing pump to the washing water temperature control execution unit 75;

After receiving the output signals of the rinsing water temperature determining unit 71, the washing water level determining unit 72 and the rinsing water level determining unit 73, respectively, and after determining the respective conditions, the rinsing pump, the hydrostatic valve and the booster A washing water temperature control execution unit 75 outputting a predetermined control signal;

A rinsing pump driving command unit 76 generating a control signal for driving the rinsing pump for a predetermined time in response to the control signal output from the washing water temperature control execution unit 75;

A receiver signal driving command unit 77 for controlling the driver's valve in response to a control signal output from the washing water temperature control execution unit 75;

It is characterized in that it comprises a booster drive command unit 78 for generating an operation control signal of the booster in response to the control signal output from the washing water temperature control execution unit 75.

Figure 3 shows a flow chart for explaining the method according to the present invention, when the initial power is turned on to detect whether the washing water of the washing tank is full water level, if the water level immediately enters the wash standby state, if not the water level constant rinse pump In the initial control method of the power-on of the dishwasher, the rinsing water is introduced into the washing tank until the washing tank reaches the full level by repeating the operation for a time and then stopping.

As a result of detecting the wash water level in the wash tank, the water level of the rinsing water is detected before the rinsing water contained in the booster rinse water tank is introduced into the wash tank by detecting the wash water level. Driving the booster while replenishing the rinsing water;

As a result of the detection, the rinsing water level detects the state of the hydrant valve in the full water level. If the `` on '' state, the hydrant valve is 'off', and in the 'off' state, the rinsing water temperature is above a predetermined temperature. Detects if the temperature is less than the predetermined temperature characterized in that the step of continuing the combustion operation of the booster until the temperature of the rinsing water reaches a predetermined temperature so that the rinsing water reaching the predetermined temperature is introduced into the washing tank.

The operational effects of the apparatus and method as described above will be described below.

First, the microcomputer 7 performing the overall control function of the dishwasher through a predetermined program outputs a predetermined signal to the display and the switch input unit 18 when the power is initially turned on (that is, when the power switch is 'on'). It generates for several seconds (e.g., 2-3 seconds) to turn on the power supply display LED and the wash select LED to indicate that the power voltage is supplied.

Subsequently, the washing water level determining unit 72 in the microcomputer 7 receives an output signal of the first water level detecting unit 2 which detects the water level in the washing tank through a pressure switch to detect whether the water in the washing tank is full.

As a result, if the full water level state, the washing water temperature control execution unit 75 immediately enters the washing standby state, otherwise, the rinsing water level determination unit 73 does not enter the process of immediately introducing the rinsing water into the washing tank unlike the conventional high water level. The output signal of the second water level detecting unit 3 is input to determine whether the level of the rinsing water level is full, wherein the second water level detecting unit 3 has a different length and is installed in the rinsing water tank of the booster. The output signal of the carbon rod is used to detect whether the level of the rinsing water to be introduced into the washing water is full or low.

When the water level in the rinsing water tank is not the full water level as a result of the detection, the washing water temperature control execution unit 75 generates a predetermined output signal to the water receiver valve driving circuit unit 4 through the power receiver valve driving command unit 77. The rinsing water flowing into the rinsing water tank by outputting a driving signal to the booster driving circuit unit 20 through the booster driving command unit 78 by supplying water directly to the rinsing water tank by refilling the hydrant valve 'on'. Let it heat up.

Of course, the washing water temperature control execution unit 75 outputs the second water level detecting unit 3 through the rinsing water level determination unit 73 while the water is supplied to the rinsing water tank and the booster is driven as described above. The signal is input to continuously detect whether the level of the rinsing water reaches the full water level.

In the above, when the level of the rinsing water was initially detected as a result of the full water level, or the water is supplemented while driving the booster as described above, when the rinsing water reaches the full level, the washing water temperature control execution unit 75 currently changes Determination of the rinsing water temperature to determine whether the temperature of the rinsing water by the signal output from the thermistor input circuit 21 immediately after detecting whether it is in the 'off' state and 'off' if it is in the 'off' state The output signal of the unit 71 is input to detect whether the current rinsing water temperature reaches a predetermined temperature (for example, 85 ° C.).

As a result, if the temperature of the rinsing water does not reach a predetermined temperature of 85 ° C., the process of determining the full water level of the rinsing water and the 'off' state of the electronic valve is continued while driving the booster.

The combustion operation of such a booster is continued until the rinsing water temperature in the tank reaches a predetermined temperature (ie, 85 ° C.), and the washing water temperature control execution unit 75 in the microcomputer 7 performs the thermistor input circuit 21. When the temperature of the rinsing water is detected through the rinsing water temperature determination unit 71 connected to the predetermined temperature, when the predetermined temperature is reached, the combustion operation of the burner is blocked and the rinsing water is introduced into the washing tank.

That is, when the temperature of the rinsing water is detected during the combustion operation of the booster, when the predetermined temperature is reached, the washing tank becomes full level when the rinsing pump 11 is driven for a predetermined time T1 and then stopped for a predetermined time T2. Repeatedly performed until a predetermined temperature (ie, 85 ° C) by the booster to perform the washing water supply process to fill the washing tank with the water level (ie, rinsing water) to the full water level, and then enters the washing standby state.

At this time, it is preferable to set the stop time T2 of the rinsing pump 11 to be longer than the driving time T1, because the water already heated in the booster is delivered to the washing tank within the driving time of the rinsing pump 11. This is to fully heat the fresh water flowing into the booster again.

When filling the washing water in the washing tank with rinsing water at the beginning of the power supply, when the water in the rinsing water tank of the booster reaches the full water level, it is heated to a predetermined temperature and filled with the washing tank with this water (ie, rinsing water). The temperature of the incoming washing water is maintained higher than the optimum temperature (for example, 60 ℃) with good washing efficiency, so the initial washing power can be greatly improved even if the washing water is washed from the moment when the washing water becomes full. Due to the preparation operation after turning on the power, the washing water temperature has already reached the optimum temperature even if the washing tank has not reached the full water level for a predetermined time, so the operation of the heater 14 installed in the washing tank is blocked. This can prevent unnecessary waste of power in advance.

As described above, according to the present invention, before performing the initial preparation operation in which the dishwasher is turned on, it is determined whether the rinsing water can be rinsed through the carbon rod, and if the rinsing water is not available, the hydrant valve is operated until the rinsing water reaches the full water level. By filling the rinsing water to a certain temperature through the combustion operation of the booster and supplying the rinsing water heated above a certain temperature to the washing water of the washing tank, the temperature of the washing water when detecting the full water level of the washing water. Since the temperature is always maintained above a certain temperature, it is possible to improve the cleaning power during the initial cleaning. Also, since the temperature of the washing water has already reached a certain temperature even without washing, the heater installed in the washing tank is unnecessary to operate. Waste can be prevented beforehand, as well as product reliability and image It can greatly improve the castle.

Claims (2)

A rinsing water temperature determination unit 71 for determining a temperature of the rinsing water through a signal output from the thermistor input circuit 21 in the microcomputer 7 performing the overall control function of the dishwasher through a predetermined program; A washing water level determining unit (72) for receiving the output signal of the first water level detecting unit (2) to determine the level of the washing water; A rinsing water level determining unit (73) for receiving the output signal of the second water level detecting unit (3) to determine the level of the rinsing water; A timer 74 for inputting time data necessary for driving the rinsing pump to the washing water temperature control execution unit 75; After receiving the output signals of the rinsing water temperature determining unit 71, the washing water level determining unit 72 and the rinsing water level determining unit 73, respectively, and after determining the respective conditions, the rinsing pump, the hydrostatic valve and the booster A washing water temperature control execution unit 75 outputting a predetermined control signal; A rinsing pump driving command unit 76 generating a control signal for driving the rinsing pump for a predetermined time in response to the control signal output from the washing water temperature control execution unit 75; A receiver signal driving command unit 77 for controlling the driver's valve in response to a control signal output from the washing water temperature control execution unit 75; Power supply initial wash water temperature control device of the dishwasher, characterized in that it comprises a booster drive command unit 78 for generating an operation control signal of the booster in response to the control signal output from the washing water temperature control execution unit 75. . When the initial power is turned on, it detects whether the water in the washing tank is at full water level. If the water level is low, it immediately enters the washing standby state.If it is not at high water level, it operates the rinse pump for a certain time and stops it until the washing tank reaches the full water level. In the initial control method of the power supply of the dishwasher made to enter the washing standby state after the rinsing water flow into the washing tank, As a result of detecting the wash water level in the wash tank, the water level of the rinsing water is detected before the rinsing water contained in the booster rinse water tank is introduced into the wash tank by detecting the wash water level. Driving the booster while replenishing the rinsing water; As a result of the detection, the rinsing water level detects the state of the hydrant valve in the full water level. If the `` on '' state, the hydrant valve is 'off', and in the 'off' state, the rinsing water temperature is above a predetermined temperature. If it is below the predetermined temperature and the rinsing water temperature of the rinse water reaches the predetermined temperature continues the combustion operation of the booster to add the rinsing water reaching the predetermined temperature is introduced into the washing tank, characterized in that How to control initial washing water temperature.