KR100198564B1 - Dishwasher - Google Patents

Abstract

The present invention relates to a method and apparatus for driving a washing blade of a dishwasher for automatically washing dishes, and when the washing blade for spraying the washing water is not rotated normally, the present invention quickly detects and stops the driving of the washing motor and the washing pump. It is to stop the operation of the washer.

To this end, when the injection pressure of the spray water for exclusive use of the washing wing rotation is periodically detected on the inner circumferential surface of the washing tank 2 when the washing motor 12 is driven, the washing pump is turned off after applying power for a set time to the washing motor. If the stop of the drive (11), and if the pressure of the spraying water for exclusive use of the washing wing rotation is not sensed, the washing wing revolving injection is injected through the rotary injection hole (18a) to stop the driving of the washing motor 12 The inner peripheral surface of the washing tank (2) in which the sprayed water (17) is to install a pressure sensing means for detecting the pressure of the spraying water for exclusive use of the cleaning blade rotation.

Description

Cleaning vane driving method of dishwasher and its device

The present invention relates to a dishwasher for automatically washing dishes, and more particularly, to a method and a device for driving the cleaning wing of the dishwasher for detecting whether the washing blade for spraying the washing water rotates normally in the dishwashing process.

1 is a vertical cross-sectional view of a conventional dishwasher, the dishwasher includes a main body 1 forming a case, a washing tank 2 installed inside the main body for storing dishes, and a water supply hose having one end connected to the faucet ( 3) a water supply valve 4 connected to the inside and through the side wall of the washing tank to control the water supply of the washing water, and a sump of the washing water formed at the lower portion of the washing tank and collecting water (5). ), And a water level sensor (6) for closing the water supply valve by detecting the amount of washing water installed on one side of the upper end of the sump, and is installed to be pulled out along the guide rail (7) above and below the washing tank. The dish shelf 9 on which the dishes 8 are placed, the washing vane 10 rotatably installed directly below the dish shelf, and spraying the washing water onto the tableware placed on the dish shelf, and the washing water in the sump By side It is composed of a washing pump 11 and a washing motor 12 to be pumped, and a drain pump 13 and a draining motor 14 installed directly under the sump to drain wastewater to the outside after the washing of the dishes is completed. .

In the dishwasher having the structure described above, the washing blade 10 spraying the washing water when the washing water in the sump 5 according to the driving of the washing pump 11 is pumped toward the washing wing 10 is shown in FIGS. 2 and 3. As described above, a plurality of dish washing nozzles 16 having a washing jet hole 16a for spraying the dish washing jet water 15 toward the table 8 placed on the table shelf 9 are provided on the upper surface thereof. At both ends, a washing nozzle revolving nozzle 18 having a rotating jet hole 18a for injecting the jet water 17 for revolving dish washing wing so that the centrifugal force is applied to rotate the washing blade 10 when washing the dishes. These are mutually installed.

Referring to the flow chart shown in Fig. 4 for driving the conventional dishwasher configured as described above is as follows.

Put the dishes (8) to be washed on the dish shelf (9) in turn, push the dish shelf (9) into the washing tank (2), apply power and set the washing time according to the amount of dishes and then supply water (S ₁ to S ₂ )

Accordingly, the water supply valve 4 for supplying the washing water in the washing tank 2 is opened so that the washing water is different in the sump 5, wherein the difference in the sump is a level sensor 6 installed in the sump whether or not the washing water is at normal water level. ) When the washing water reaches the set normal water level, close the water supply valve (4) to stop the supply of the washing water.In contrast, if the water level is not normal, the water is supplied again until it reaches the normal water level. Close the valve (4). (S ₃ ~ S ₄ )

After the washing water is supplied to the sump 5 in the above-described operation, power is automatically supplied to the washing motor 12 so that the washing pump 11 is driven so that the washing water in the sump is pumped to the washing wing 10 side. (S ₅ )

When the washing water is pushed toward the washing blade 10 in this way, as shown in FIGS. 2 and 3, the rotary injection hole 18a of the washing blade rotating spray nozzle 18 installed opposite to each other at the both ends of the washing blade 10 is provided. Since the washing blade rotation spray water 17 is sprayed through the washing blade is rotated in one direction and at the same time the table through the washing spray holes 16a of the plurality of dish washing nozzles 16 formed on the upper surface of the washing blade Since the washing jet water 15 is sprayed to the side of the dish 8 placed on the dish shelf 9, the dishes are evenly washed.

The above operation is repeatedly performed for the first set time, and when the set time is completed, the driving of the washing motor 12 and the washing pump 11 is stopped, and if the set time is not completed, the washing motor 12 and the washing pump ( When a cleaning action as was described above, the drive 11) continue to occur at the set washing time is complete, stop the driving of the washing motor 12 and the cleaning pump 11 completes the dishwashing operation. (S ₆ S ₈ )

However, such a conventional dishwasher has the following problems.

First, when the washing blade 10 is not rotated when the dish is washed, the means for detecting it is not provided, so the washing motor 12 and the washing pump 11 are normally driven, but the dish shelf ( The dishes 8 placed on 9) were not evenly washed.

Second, if the supply line to which the washing water is pumped is clogged or the washing pump 11 continues to be driven while the washing pump 11 is constrained by dirt or the like, and the washing water is pumped, the driving motor is stopped by detecting this. Since there is no means for overloading the washing motor, the washing motor is damaged, or in severe cases, there is a risk of fire.

Third, when a leak occurs during operation of the dishwasher, the washing pump 11 is continuously driven because no means for detecting the leak is provided, but the washing water is not sprayed to the side of the dish 8 placed on the dish shelf 9. The dishes are not washed.

The present invention has been made in order to solve such a problem in the prior art, by quickly detecting this when the washing blades for spraying the washing water is not rotated normally stops the operation of the washing motor and washing pump and stops the operation of the dishwasher It is an object of the present invention to provide a method and apparatus.

According to an aspect of the present invention for achieving the above object, the step of setting the washing time according to the amount of the dish to be applied to the main body and the power to be washed, opening the water supply valve to supply the washing water into the washing tank, Determining whether the washing water is normal water level, judging the amount of washing water supplied, closing the water supply valve if the water level is normal, and if the water level is not normal, re-water supply until the normal water level, and the water supply valve is closed According to this, the power is supplied to the washing motor, and the washing water in the sump is pumped to the washing wing side, and washing is performed. If the pressure is periodically detected, turn off the washing pump by applying power to the washing motor for the set time and stop the washing pump. If the pressure of the jetted water is not detected, an error is displayed and a method of driving the washing blade of the dishwasher, characterized by performing the step of stopping the driving of the washing motor.

According to another aspect of the present invention, by installing a pressure sensing means for detecting the pressure of the injection blade for washing wing rotation in the washing tank hit by the injection blade for washing blade rotation sprayed through the injection hole dedicated for washing wing rotation of the washing motor and the washing pump When the pressure sensing means does not sense the pressure of the jet water for washing wing rotation during operation is provided with a washing wing driving device of the dishwasher, characterized in that to turn off the power of the washing motor.

1 is a vertical cross-sectional view showing a conventional dishwasher

Figure 2 is a longitudinal sectional view showing a state in which the washing water is sprayed from the washing blade of Figure 1

3 is a plan view of FIG.

Figure 4 is a flow chart showing a conventional dishwasher driving method

5A and 5B are longitudinal cross-sectional views showing the main parts of the present invention.

Figure 6 is a flow chart showing a dishwasher driving method of the present invention

Explanation of symbols for main parts of the drawings

2: washing tank 4: water supply valve

5: sump 9: dish shelf

10: washing wing 11: washing pump

12: washing motor 15: water jet for washing the dish

16: Dish washing nozzle 16a: washing jet hole

17: spray nozzle for washing wing rotation 18: spray nozzle for washing wing rotation

18a: rotating jetting hole 19: soft member

20: contact 21: switch

Hereinafter, the present invention will be described in more detail with reference to FIGS. 5A, 5B, and 6 as an embodiment.

5A and 5B are longitudinal sectional views showing the main part of the present invention, and FIG. 6 is a flowchart illustrating a method of driving the dishwasher according to the present invention, in which the same parts as those of the conventional dishwasher are omitted and given the same reference numerals. Shall be.

The present invention is a washing tank (2) in which the washing blade rotation spraying water (17) sprayed through the rotary injection hole (18a) of the washing blade rotational injection nozzle 18 installed on both ends of the washing wing (10) opposite each other On the inner circumferential surface of the dishwasher is provided with a pressure sensing means for detecting the pressure of the jet water for washing wing rotation only.

In the embodiment of the present invention, the pressure sensing means has an inner circumferential surface of the washing tank 2 in which the washing wing rotary injection water 17 sprayed through the rotary spray hole 18a is hit as shown in FIGS. 5A and 5B. The soft member 19 is installed to maintain the airtight on the upper surface, and the soft member 19 is installed to the outside of the soft member and the soft member 19 is deformed to the outside by the pressure of the injection water 17 for washing wing rotation only contact 20 The switch 21 is turned on.

However, the present invention is not limited thereto, and a pressure sensor may be used to detect whether the washing blade 10 rotates in one direction when the dishwasher is operated.

The soft member 19 shown in Figures 5a and 5b is sufficient to maintain the airtight with the washing tank 2 and at the same time the material is deformed to the outside as the jetting water for washing wing rotation only, but airtight with the washing tank It is preferable to use rubber packing when considering maintenance or production costs.

In addition, the main body (1) of the present invention is further provided with an alarm means for promptly hearing or visually notifying the user as the pressure detecting means does not detect the pressure of the spray water for washing wing rotation only.

The alarm means may use a buzzer to inform the user that the washing wing 10 is not rotated, or use an LED lamp to visually inform.

Referring to the flow chart shown in Figure 6 the operation of the present invention configured as described above is as follows.

First, draw out the dish shelf 9 which can be pulled out in the washing tank 2 to the outside like the conventional dishwasher, put the dish 8 to be washed on the dish shelf, and then push the dish shelf back into the washing tank. And put the power to the dishwasher and at the same time performs the step of setting the washing time in accordance with the amount of dishes placed on the dish shelf (S ₁ ).

Accordingly faucet (not shown also), and since the water supply valve 4 is connected by a supply hose (3) opens the step of supplying washing water in the sump 5 in the washing tank (2) is carried out. ₍₂ S)

When the washing water is supplied in the sump (5) as described above, the water level sensor 6 determines whether the water supplied is the normal water level, and closes the water supply valve 4 when the water supply is the normal water level. Re-run the water supply until the normal water level is reached. (S ₃ ~ S ₄ )

According to the operation as described above, the washing water is supplied in the sump 5 to the normal water level, and after the water supply valve 4 is closed, power is applied to the washing motor 12 to drive the washing pump 11. The washing water in the) is pumped to the washing wing 10 side through the washing water supply line 22. (S ₅ )

When the high pressure washing water is pumped to the washing wing 10 through the washing water supply line 22, a part of the conveyed washing water is disposed on the dish shelf 9 through the washing spray holes 16a formed in the dish washing nozzle 16. ) Is sprayed to the side of the dish (8) placed on the side is a washing operation of the dish is made, wherein a part of the washing water is sprayed through the rotary spray hole (18a) formed in the spray nozzle for exclusive use of the washing wing rotating washing blade (10) Centrifugal force is applied to) so that the washing blade 10 rotates continuously during the washing operation of the dishes.

Performs the step of cleaning the blade 10 is rotated by detecting the pressure of the cleaning blade for rotating the spray can (17) by the pressure sensing means in accordance with the progress of the dish washer into operation as described above. (S ₉₎

That is, when the washing blade 10 rotates normally according to the driving of the washing pump 11, the spraying nozzle is sprayed through the rotating spray hole 18a of the spray nozzle for exclusive use of the sachet blades installed at both ends of the washing blade 10. Since the jetting water 17 for washing wing rotation is hit by the soft member 19 of the pressure sensing means installed on the inner circumferential surface of the washing tank 2 as shown in FIG. 5A, a soft member such as rubber packing is disposed outside the washing tank 2. The switch 21 is turned on by pushing the switch contact 20 to which the soft member 19 is connected.

In this state, when the washing blade 10 is continuously rotated by the spraying pressure of the washing water and is out of the pressure sensing means as shown in FIG. 5B, the spraying pressure of the spraying water for washing wing 17 dedicated to the washing wing acting on the soft member 19 is increased. Since the soft member 19, which is deformed to the outside of the washing tank 2, is restored to the initial state by the restoring force, the switch contact 20 which has turned on the switch 21 is also reduced to the initial state. 21 is turned off.

As described above, the operation in which the switch 21 is periodically turned on and off is periodically repeated while the washing blade 10 is rotated.

When the washing pump 11 is driven, the switch 21 periodically turns on and off to wash the dishes 8 placed on the dish shelf 9 for a predetermined time, and then is applied to the washing motor 12. Since the power is automatically cut off, the driving of the washing pump 11 is stopped and at the same time the operation of the dishwasher is completed. (S ₆ to S ₈ )

On the contrary, if the pressure sensing means does not detect the pressure of the spraying water dedicated to the cleaning wing 17 while the washing pump 11 is driven, the switch 21 does not periodically turn on or off the buzzer, which is a notification means. By using the LED lamp to inform the user acoustically or visually that the cleaning wing 10 is not rotated and at the same time cut off the power applied to the cleaning motor 12 to stop the driving of the cleaning pump. (S ₁₀ ~ S ₁₁ )

As such, when the washing blade 10 is not rotated during the operation of the dishwasher, the user is quickly notified so that the user can take emergency measures or notify the service center to receive the A / S.

The present invention as described above has the following advantages.

First, it is possible to determine whether the washing blade is rotated correctly by detecting the pressure of the washing blade rotating spraying water 17 sprayed from the washing blade 10 during the operation of the dishwasher so that the washing blade is rotated correctly. have.

Second, accordingly, whether or not the washing pump 11 is normally driven can also be accurately determined.

Third, it is possible to prevent safety accidents that may occur while the washing motor 12 and the washing pump 11 operate in the absence of the washing water due to leakage of washing water or other factors caused by the dishwasher during operation. .

Fourth, because the washing blade 10 is not rotated to prevent the cause of the defect that the dishes are not washed even after the operation of the dishwasher is terminated in advance, thereby preventing the occurrence of claims from consumers Will be prevented.

Claims (9)

Setting a cleaning time according to the amount of dishes to be supplied with power to the main body; Supplying the washing water into the washing tank by opening the water supply valve; Determining whether the water supplied is normal water, If the water level sensor judges the amount of water supplied to the water level, close the water supply valve, and if it is not the normal water level, re-water supply until the normal water level; As the water supply valve is closed, power is supplied to the washing motor, and the washing water in the sump is pumped to the washing wing side to perform washing. Detecting the pressure of the jetting water for washing wing rotation during dish washing; If the pressure of spray water for washing wing rotation is periodically detected, apply power to the washing motor for a set time and then stop the driving of the washing pump.If the pressure of spray water for washing wing is not detected, the washing motor is driven. Washing wing driving method of the dishwasher, characterized in that to perform a step of stopping. The method of claim 1, Method of driving the washing wing of the dishwasher to notify the outside by the alarm means when the pressure of the spray water for washing wing rotation only when the cleaning pump is driven, stops the driving of the washing motor. The pressure sensing means is installed on the inner surface of the washing tank in which the washing wing rotating spray is injected through the spraying hole for washing wing rotation, and the pressure sensing means detects the pressure of the washing wing rotating spray for the driving of the washing pump. The washing blade driving device of the dishwasher, characterized in that to turn off the power of the washing motor when the pressure of the rotating jet water is not detected. The method of claim 3, wherein Pressure sensing means A soft member installed to maintain airtightness on the inner circumferential surface of the cleaning tank in which the spraying water for cleaning wing rotation is injected through the spraying hole for cleaning wing rotation; Washing blade drive device of the dishwasher is installed to the outside of the soft member is configured to switch on the contact as the soft member is deformed to the outside by the pressure of the injection water for washing wing rotation only. The method of claim 4, wherein Washing vane driving device of the dishwasher, characterized in that the soft member is a rubber packing. The method of claim 3, wherein And a pressure sensing sensor installed on an inner circumferential surface of the cleaning tank in which the pressure sensing means is sprayed through the injection hole for cleaning wing rotation. The method of claim 3, wherein Washing wing drive device of the dishwasher, characterized in that the pressure sensing means further comprises an alarm means for notifying the outside as the pressure sensing means for detecting the pressure of the jet for washing wing rotation. The method of claim 7, wherein Washing wing drive of dishwasher that alarm means buzzer. The method of claim 7, wherein Washing vane driving device of the dishwasher, characterized in that the alarm means LED lamp.

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