KR100645303B1 - Dish washer - Google Patents

Abstract

The dishwasher has a washing tank, a washing unit, a mist generating unit, and a control unit. The cleaning tank accommodates the object to be cleaned. The washing section is disposed in the washing tank and sprays the washing water onto the object to be cleaned. The mist generating part atomizes the detergent liquid prepared in the detergent and water supplied in the washing tank. At least two courses are set in the control unit so that the control unit drives the fog generating unit in these two courses for controlling the driving of the cleaning unit and the fog generating unit, and then cleans the object to be cleaned by the cleaning unit. Moreover, the time which drives a fog generation part differs in two courses, respectively.

Description

Dish Washer {DISH WASHER}

1 is a longitudinal cross-sectional view of the dish washing machine in the embodiment of the present invention;

2 is an enlarged cross-sectional view of an essential part of the dish washing machine shown in FIG. 1;

3 is a longitudinal sectional view of a conventional dishwasher.

<Description of the code | symbol about the principal part of drawing>

1: washing tank 2: water supply part

3: water level detection unit 4: drain hole

5: pump 7: washing part

8: object to be cleaned 9: heating part

10: dish basket 11: drain pump

13 detergent preparation unit 24 door part

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for cleaning by spraying washing water onto objects to be cleaned such as tableware.

A conventional dishwasher which sprays washing water onto a to-be-cleaned object such as dishware while dissolving a detergent is disclosed in, for example, Japanese Patent Laid-Open No. 2003-210378. 3 shows a cross section of such a dishwasher. The configuration will be described below.

A washing tank 41 is provided inside the main body of the dish washing machine, and the water supply part (water supply valve) 42 supplies water or boiling water into the washing tank 41. Here, the supply of the washing water is set to an appropriate water level by using the water level detection unit 43, and the water supply from the water supply unit 42 is automatically stopped. The drain hole 44 is provided in the bottom part of the washing tank 41. The cleaning pump 45 (hereinafter referred to as pump) 45 communicates with the drain hole 44 and is driven by a motor (not shown). The pump 45 circulates the washing water into the washing tank 41. In addition, the drain hole 44 is provided with a filter 46 for collecting the residual.

The operation | movement with respect to the dishwasher comprised as mentioned above is demonstrated below. The washing water supplied into the washing tank 41 passes through the filter 46 and is sucked into the pump 45, and the washing unit 47 which is a nozzle provided at the inner bottom of the washing tank 41 by the pump 45. Supplied to. The washing water sprayed from the washing unit 47 washes the object to be cleaned 48 such as tableware and then enters the drain hole 44 again. In this path, the wash water circulates. At this time, the residue left off from the object to be cleaned 48 and the like flows into the filter 46 together with the washing water, and the residue having a size that cannot pass through the filter 46 is collected by the filter 46.

In addition, a heating portion 49 for heating the washing water is provided between the washing portion 47 and the bottom portion of the washing tank 41, and a dish basket 50 is provided above the washing portion 47 so as to be efficient. The washing is performed. The dish basket 50 arranges the object to be cleaned 48 so that the cleaning part 47 can effectively spray the washing water to the object to be cleaned 48.

However, in such a conventional structure, washing | cleaning cannot be performed with respect to all the dirt wash | cleaned with a dishwasher. In particular, it is bad about the dirt of the cooking which directly heats and performs cooking with sticking. For example, it is cooking dirt, such as gratin and egg custard.

As this solution, it is effective to provide a pretreatment step of atomizing the detergent liquid at a higher concentration than the detergent concentration in normal use and adhering to the object to be cleaned 48 and leaving it to stand. Moreover, when washing at high temperature, the washing performance is greatly improved. Thereby, it is possible to make it possible to wash the dirt of the dish which cannot be removed conventionally.

In addition, by extending the mist generating operation time, the atomization amount of the high concentration detergent liquid can be increased, and the adhesion amount to the object to be cleaned can be increased. Thereby, the easiness of removing dirt can be increased, and cleaning performance can be improved remarkably.

However, if the fog generation operation time of the entire course for driving is extended, the driving time of each course will be extended in the same way, and the energy consumption will also increase.

The dishwasher of this invention has a washing tank, a washing | cleaning part, a mist generating part, and a control part. The cleaning tank accommodates the object to be cleaned. The washing unit is disposed in the washing tank and sprays the washing water to the water to be cleaned. The mist generating part atomizes the detergent liquid prepared in the detergent and water supplied in the washing tank. At least two courses are set in the control unit and control driving of the cleaning unit and the fog generating unit. The controller controls the object to be cleaned by the cleaning unit after driving the mist generating unit in these two courses. Moreover, the time which drives a fog generation part differs in two courses, respectively. As a result, the course can be selected according to the conditions desired by the user in terms of the type of dirt, the driving time, the energy consumption, and the like, and the usability is greatly improved.

1 is a longitudinal cross-sectional view of the dish washing machine according to the first embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view (main part enlarged longitudinal cross-sectional view) of the mist generating unit.

The washing tank 1 which accommodates the to-be-cleaned object 8 is installed in the inside of a dishwasher main body, The water supply part (water supply valve) 2 supplies water or hot water in the washing tank 1. The supply of the washing water is set to an appropriate water level using the water level detection unit 3, and the water supply from the water supply unit 2 is automatically stopped. The drain hole 4 is provided in the bottom part of the washing tank 1. The cleaning pump 5 (hereinafter referred to as a pump) 5 communicates with the drainage hole 4 and is driven by a motor (not shown). The pump 5 circulates the washing water into the washing tank 1 and supplies it to the washing unit 7 which is a washing nozzle provided on the inner bottom of the washing tank 1.

Between the washing | cleaning part 7 and the bottom part of the washing | cleaning tank 1, the heating part 9 for washing water heating is provided, and the dish basket 10 is installed above the washing | cleaning part 7, and it washes efficiently. Is running. The dish basket 10 arranges the object to be cleaned 8 so that the cleaning part 7 can spray the washing water to the object to be cleaned 8 effectively. In addition, the drain pump 11 discharges the washing water to the outside of the air. The control unit 26 drives and controls electrical components such as the water supply unit 2, the pump 5, and the heating unit 9. The control unit 26 is also connected to the water level detection unit 3.

The detergent liquid preparation part (hereinafter, a preparation part) 13 is provided with the partition 14 and the cleaning tank 1 at the position along one side of the front end which is the door part 24 side of the cleaning tank 1. The operation display part 25 for selecting the course (cleaning menu) to drive by button operation is provided in the door part 24. As shown in FIG. The driving course set in the control unit 26 includes at least the following four courses. Each course including these can be set by the operation of the operation display unit 25.

1st course: The course of the pretreatment process which drives the mist generating part 15 is 8 minutes, and the washing water temperature of the washing | cleaning process which wash | cleans the to-be-cleaned object 8 with the washing | cleaning part 7 after that is about 60 degreeC

Second course: The course of the pretreatment process is 15 minutes, the wash water temperature of the subsequent washing process is about 80 ℃

3rd course: There is no pretreatment process, and a process which performs a washing process without driving the mist generating part 15

Fourth course: A course in which a pretreatment step is followed by drainage and water supply, and a rinsing step of rinsing the object to be cleaned 8 by the cleaning unit 7 is performed.

As shown in FIG. 2, the preparation part 13 communicates with the washing tank 2 by the notch 14A of the partition 14, The preparation part with the detergent and water supplied in the washing tank 1 inside. The mist generating part 15 for atomizing the detergent liquid prepared in (13) is arrange | positioned. An ultrasonic vibrator (hereinafter, vibrator) 16, which is a mist generating vibrator, is disposed on the lower surface of the mist generating unit 15, and a container 18 in which the liquid 17 is enclosed above the vibrating surface of the vibrator 16 is disposed. It is. With this structure, when the mist generating surface 19 which is the surface facing the vibrator 16 of the container 18 vibrates, the vibration propagates through the vibration transmission material comprised of the liquid 17 and the container 18, and it is prepared. The detergent liquid in the part 13 is atomized.

The cover part 20 provided above the preparation part 13 has the cover part 21 which covers the guide generation surface 19 from upper direction, and the inclination part 22 which introduces detergent into the preparation part 13. The cover portion 21 is provided with a hole 23 for scattering the atomized detergent liquid.

The operation and action of the dishwasher configured as described above will be described. At the start of operation of the dishwasher, the control unit 26 opens the water supply unit 2, and a predetermined amount of washing water is supplied. The washing water supplied into the washing tank 1 is sucked into the pump 5, and is supplied to the washing unit 7 by the pump 5. The washing water sprayed from the washing unit 7 washes the object to be cleaned 8 such as tableware and then enters the drain hole 4 again. The wash water circulates through this path.

On the other hand, a predetermined amount of detergent injected onto the inclined portion 22 is introduced into the preparation portion 13 along this inclined portion. The washing water penetrates into the preparation part 13 through the notches 14A of the partition 14 from the washing tank 1, and a part of the detergent dissolves in the washing water.

At the time when the water level detection unit 3 detects the water level, the control unit 26 closes the water supply unit 2, the water supply stops, and the water level is determined. The water level at this time is above the upper end surface of the heating part 9. When the control part 26 drives the vibrator 16 at this time, the vibration propagates the liquid 17 and the container 18, and the mist generating surface 19 vibrates. At this time, if the position of the mist generating surface 19 is arrange | positioned in the position where the vibration amplitude of the vibrator 16 becomes the maximum, since the mist generating surface 19 can be vibrated largely, it is preferable.

By this vibration, the washing water on the upper surface also vibrates, the washing water is atomized, and at the same time, the detergent set in the preparation unit 13 also melts, and the detergent solution of high concentration in the washing tank 1 is passed through the hole 23. This scatters. In addition, the heating unit 9 heats the washing water and generates convection in the washing tank 1, whereby fog of high concentration of detergent liquid is convexed into the washing tank 1. As a result, the detergent solution of high concentration can be more efficiently attached to the object to be cleaned 8.

In the pretreatment step of the washing step, as described above, the mist generating unit 15 scatters the detergent solution of high concentration in the washing tank 1 and attaches the detergent solution of high concentration to the object to be cleaned 8. If left in this state, a high concentration of detergent liquid chemically decomposes the dirt adhering to the object to be cleaned 8. In the washing step after the pretreatment step, washing with a conventional dishwasher is performed on the dirt after the specific dirt is decomposed by the detergent solution having a high concentration in the pretreatment step.

As the dirt of the object to be cleaned 8, there are dirts which are hard to fall off, such as oils and fats such as lipsticks and teas, pigment-based dirts, and sticking to the objects to be cleaned, such as gratin and steamed eggs. Degradation of the dirt in the pretreatment step described above is effective for the oil-based or dye-based dirt. Therefore, the first course described above is effective. In addition, it is very effective to raise the temperature of the washing water, increase the injection force of the washing water from the washing unit 7 and improve the mechanical force in addition to strengthening the pretreatment step. In other words, the second course having a longer driving time than the first course 15 is effective. Although the time of the pretreatment process of a 2nd course is 15 minutes and is about 1.9 times of a 1st course, even if it sets to 1.5 times or more and 3 times or less, it is effective against sticking. Moreover, although the washing water temperature in the pretreatment process of the 2nd course is 80 degreeC, when it is 65 degreeC or more, it is effective against sticking. On the other hand, since the effect does not change even if it exceeds 80 degreeC, it is preferable to set it as 80 degrees C or less from a viewpoint of energy saving. Although the washing water temperature of 1st course is 60 degreeC, when it is 50 degreeC or more, it is effective with respect to the oils and fats of a pigment | dye system. Moreover, even if it exceeds 65 degreeC, since an effect does not change, it is preferable to set it as 65 degrees C or less from a viewpoint of energy saving. The cleaning performance is improved more efficiently with respect to the dirt which was difficult to remove conventionally while suppressing the operating time and energy consumption by the time and temperature setting as described above.

In addition, the very light dirt may be dropped in the rinsing step after decomposing most of it in the pretreatment step, and in this case, the fourth course may be used. In the fourth course, since the pretreatment step can be operated with a small amount of water, a great saving water can be realized, and energy efficiency can be improved.

In addition, among the conditions to be used, it is not always necessary that the pretreatment step is necessary, such as in the case of relatively light dirt or when the user has spilled contaminants with water in advance. In this case, the third course may be used. In the third course, since there is no pretreatment step, this course can be selected in order to shorten the operating time or to save energy consumption, and the usability is improved.

Since the dishwasher according to the present embodiment can freely select a course by the operation display unit 25, the dishwasher can be distinguished and used according to the type of dirt, operating time, and energy consumption. Thereby, the dishwasher which improved the cleaning performance significantly and improved usability can be obtained.

As described above, the dishwasher according to the present invention selects and operates one from a plurality of courses having different operating times of the fog generator 15. In this way, the user can distinguish and use according to the type of dirt, operating time, and energy consumption conditions. Therefore, since the cleaning performance and usability can be greatly improved, it is useful as a dish washing machine for cleaning by spraying the washing water onto the objects to be cleaned, such as tableware. In the above description, the control section 26 sets four courses from the first course to the fourth course, but only the first course and the second course may be set.

By using the dishwasher according to the present invention, since the user can distinguish and use according to the type of dirt, operating time, and energy consumption conditions, cleaning performance and usability can be greatly improved.

Claims (6)

A washing tank accommodating the object to be cleaned, A washing unit disposed in the washing tank and spraying washing water to the object to be cleaned; A mist generating unit for atomizing the detergent solution prepared with the detergent and water supplied into the washing tank; A first course of cleaning the object to be cleaned by the cleaning part after driving the fog generating part, and after driving the fog generating part for a longer time than the first course, the object to be cleaned by the cleaning part A second course for cleaning the gas is set, and provided with at least a control unit for controlling driving of the cleaning unit and the mist generating unit. dish washer. The method of claim 1, In the second course, the fog generating unit is driven for a time of 1.5 times or more and 3 times or less of the first course. dish washer. The method of claim 1, A heating unit for heating the washing water is further provided, and the control unit controls the temperature of the washing water to be 50 ° C or more and 65 ° C or less by the heating part in the first course. dish washer. The method of claim 1, A heating unit for heating the washing water is further provided, and the control unit controls the temperature of the washing water to be 65 ° C or more and 80 ° C or less by the heating part in the second course. dish washer. The method of claim 1, The control unit is further set with a third course for cleaning the object to be cleaned by the cleaning unit without driving the fog generating unit. dish washer. The method of claim 1, In the control section, a fourth course for driving the fog generating unit and then rinsing the object to be cleaned by the cleaning unit is further set. dish washer.

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