KR100767884B1 - Dishwasher - Google Patents

Abstract

It is a dishwasher provided with the 1st blower which discharges the air in a washing tank to the exterior of a washer through an exhaust port, and the 2nd blower which mixes outside air with the air discharged from an exhaust port. By controlling at least one of the operating time of the first blower, the air flow rate of the first blower, the operating time of the second blower, and the air flow rate of the second blower, it is possible to reduce the drying performance to the outside. The discharged air is not too hot, and condensation on the outside of the washing machine can be prevented.

Description

Dishwasher {DISHWASHER}

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

2 is a block diagram illustrating a configuration of the dish washing machine according to the embodiment;

3 is a flowchart for explaining the operation of the dish washing machine according to the embodiment;

Figure 4 is a side cross-sectional view of a conventional dishwasher.

Explanation of symbols for the main parts of the drawings

16: washing tank 18: dishes

20: cleaning nozzle 22: first blower

24: exhaust port 26: opening

28: second blower 30: temperature detection device

31: control unit

The present invention relates to a dishwasher for washing and drying dishes and the like.

Conventionally, a dish washing machine of this kind has been disclosed in Japanese Laid-Open Patent Publication No. 2001-46301. The configuration will be described below.

4 is a side cross-sectional view of a conventional dish washing machine. In Fig. 4, the dishwasher body 1 is housed in a system kitchen. The washing tank 2 provided in the dishwasher main body 1 has the opening part 3 upper and arrange | positions the dish basket 5 which accommodates the tableware 4. The washing nozzle 6 is rotatably provided below the dish basket 5, the washing water stored in the washing tank 2 is circulated by the pump 7, sprayed from the washing nozzle 6, and the dishware (4) is cleaned.

Moreover, the exhaust port 9 is provided in the upper part of the front panel 8 provided in front of the washing tank 2. As shown in FIG. The blower 10 discharges the humid air in the washing tank 2 from the exhaust port 9 to the outside of the washing machine to dry the dishes 4.

The 1st rail 11 is fixed to the side part of the washing tank 2, and this 1st rail 11 is supported by the 2nd rail 12 fixed to the dishwasher main body 1 so that it can move parallel to a front-back direction. It is.

When the dishes 4 enter and leave the washing tub 2, the handle 13 provided on the front panel 8 is held, and the washing tub 2 is pulled forward. After the washing tank 2 is pulled out in front, the tableware 4 is accommodated from the upper opening 3.

Next, when the washing tank 2 is returned to the dishwasher main body 1 and operation starts, the washing water is heated by the heater 14 arranged at the bottom of the washing tank 2. The washing water is sent to the washing nozzle 6, sprayed from the washing nozzle 6 toward the dishes 4, and a washing step of removing contamination of the dishes 4 is performed. Thereafter, the dishes 4 are rinsed, and then the drying step is executed to end the operation.

However, in the structure of the conventional dishwasher, in order to discharge the air in the washing tank 2 to the outside in the state accommodated in the system kitchen, it is necessary to arrange the exhaust port 9 in front of the washing tank 2. . In addition, the air in the washing tank 2 discharged from the exhaust port 9 is almost equal to the temperature (about 80 ° C) in the washing tank 2, and the discharged air becomes excessively hot.

In addition, in the early stage of the drying step, in particular, since the air containing a lot of moisture is discharged, in addition to the excessively hot air being discharged, the temperature difference with the outside air may cause condensation to the outside of the washing machine.

In the washing and rinsing step, when the washing water temperature is high (about 50 ° C.), steam of the washing water leaks from the exhaust port 9 and condenses to the front panel 8 in which the exhaust port 9 is disposed. There is.

In addition, when it is comprised so that outside air may mix in the exhaust port 9, the quantity of the air in the washing tank 2 discharged | emitted by the blower 10, and the quantity of the outside air to mix are not adjustable. Therefore, in order to lower the temperature of the humid air at the beginning of the drying step, a large amount of outside air is required for the air in the washing tank 2, so that the amount of outside air is increased or the amount of air discharged in the washing tank 2 is increased. Will be reduced. In order to increase the amount of outside air more than necessary, it is necessary to increase the capability of the blower 10. As a result, the blower 10 becomes large, and in order to accommodate as many tableware 4 as possible in a limited space, the space of the blower 10 is not necessary much.

In addition, reducing the exhaust amount of air in the cleaning tank 2 has a problem that it takes more time to discharge the moisture in the cleaning tank 2, and consequently, the drying step becomes longer.

The dishwasher of this invention has each stage of washing | cleaning, rinsing, and drying, and is equipped with a control apparatus, a washing tank, a washing nozzle, a 1st blower, a temperature detector, and a 2nd blower.

The washing tank accommodates tableware. The cleaning nozzle is installed inside the cleaning tank to clean the dishes. The first blower discharges the air in the washing tank to the outside of the washing machine through the exhaust port. The temperature detection device detects the temperature in the washing tank. The second blowing device incorporates outside air into the air discharged from the exhaust port. By mixing outside air, the temperature and humidity of the air discharged from the exhaust port can be lowered.

The control device controls the dishwasher, and according to the temperature detected by the temperature detection device, the operating time of the first blower, the air volume of the first blower, the operating time of the second blower, and the second blower of the At least one of the air volume is controlled. For example, when the operation time of the first blower is shortened and the operation time of the second blower is lengthened at the beginning of the drying step, the temperature of the air in the washing tank discharged from the exhaust port can be reduced without reducing the drying performance. Can lower, and also lower the humidity. Therefore, it is possible to reliably prevent the discharged air from becoming too hot and condensation to the outside of the washing machine.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings. In addition, this invention is not limited by this embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side sectional view of the dishwasher in embodiment of this invention. 2 is a block diagram illustrating a configuration of the dish washing machine according to the embodiment.

In FIG. 1, the washing tank 16 provided in the inside of the dishwasher main body 15 accommodated in the system kitchen has an opening 17 upward, arrange | positions the dish basket 19 which accommodates the dishes 18, have. Below the dish basket 19, the washing nozzle 20 which sprays washing water is rotatably provided. The pump 21 sends the washing water stored in the washing tank 16 to the washing nozzle 20 and circulates in the washing tank 16 while ejecting from the washing nozzle 20. Moreover, the heater 23 which heats washing water and the air blown by the 1st blower 22 is arrange | positioned at the bottom part.

The exhaust port 24 is disposed between the front panel 25 and the cleaning tank 16 provided in front of the cleaning tank 16. The first blower 22 discharges air in the cleaning tank 16 from the exhaust port 24. The opening 26 is an opening formed in the front panel 25, and the exhaust port 24 and the opening 26 communicate with each other by the exhaust passage 27.

The second blower 28 has substantially the same capability as the first blower 22, and communicates the outside air with the blower path 29 disposed behind the front panel 25, and blows the air through the opening 26. do. The blowing path 29 is arranged to be in surface contact with the exhaust path 27 in the front-rear direction, and is configured to mix the outside air with the air discharged from the cleaning tank 16 in the opening 26. By mixing outside air, the ratio of the air discharged from the inside of the washing tank 16 contained in the air discharged from the opening 26 is reduced, and the temperature and humidity of the air discharged from the opening 26 can be lowered.

Moreover, the temperature detection apparatus 30 which detects the temperature of the washing water or the washing tank 16 is provided in the lower part of the washing tank 16. The control apparatus 31 which controls a dishwasher is comprised so that the operation time of the 1st air blower 22 and the 2nd air blower 28 may be controlled by the signal from the temperature detection device 30. In the washing and rinsing step, when the temperature detecting device 30 detects a constant temperature (for example, 50 ° C.), the control device 31 starts the operation of the second blowing device 28. Upon entering the drying step, the control device 31 operates the second blower 28, while intermittently driving the first blower 22 for a few minutes, and continuously operates the second blower. (28) is intermittently driven.

Moreover, the 1st rail 32 is fixed to the both sides of the washing tank 16, and the 1st rail 32 is movable in parallel in the front-back direction by the 2nd rail 33 fixed to the dishwasher main body 15. Moreover, as shown in FIG. Is supported.

When carrying out the dishes 18, the user grabs the handle 34 provided on the front panel 25, pulls the washing tank 16 forward, and moves the dishes 18 from the upper opening 17. Perform the acceptance.

3 is a flowchart illustrating the operation of the dish washing machine according to the embodiment. The operation and action of the dish washing machine in the above configuration will be described below with reference to FIG. 3.

First, the user grasps the handle 34 installed on the front panel 25 and pulls out the washing tub 16 from the dishwasher main body 15, and is contaminated with the dish basket 19 disposed in the washing tub 16. The tableware 18 is set. Next, when the washing tank 16 is returned to the dishwasher main body 15 and the operation is started, the washing water is heated by the heater 23 disposed on the inner bottom of the washing tank 16. The heated washing water is sprayed from the washing nozzle 20 toward the dishware 18, and a washing step of removing contamination of the dishware 18 is executed (S1). Thereafter, after the rinsing step S2 for performing several water rinses, the heating rinsing step for rinsing while heating to about 80 ° C. by the heater 23 is executed (S3). The heat rinse step is one of the rinse steps.

In the heating rinse step S3 or the like, when the washing water becomes a high temperature, steam of the washing water leaks from the exhaust port 24. In this case, when the temperature detection device 30 detects that the cleaning tank 16 has reached the first temperature (S4), the second blower device 28 is operated (S5). As a result, moisture in the discharged air is reduced, and condensation on the front panel 25 can be prevented. In this embodiment, 50 degreeC or more is set as 1st temperature. In the washing and rinsing step, condensation on the front panel 25 can be prevented by the same operation.

Thereafter, the dishwasher proceeds to a drying step of drying the dishes 18 and the inside of the washing tank 16.

In the initial stage of the drying step S6, particularly, heated air containing a lot of moisture is discharged from the exhaust port 24, the second blower 28 is operated, and the first blower 22 operates for several minutes during the intermittent operation. Run By doing so, since the air volume of the first air blower 22 can be easily lowered, the air volume after the intermittent operation can continue the drying step in a conventional state. Therefore, the temperature of the air in the washing tank 16 discharged from the exhaust port 24 can be reduced easily, and the moisture in the discharged air can be reduced without reducing the drying performance of the tableware 18. As a result, the air discharged from the dishwasher becomes too hot and condensation to the outside of the washer can be prevented. The drying stage is initially one of the drying stages.

In addition, in the drying stage initial stage S6, when the air volume of the first blower 22 is less than the volume of the second blower 28, the exhaust volume of the hot air of the initial stage of the drying stage is reduced, and the outside of the washing machine is reduced. The temperature of the air discharged to the furnace is lowered. In addition, when the temperature in the washing tank 16 is lowered, it is possible to ensure the drying performance of the tableware 18 by returning to the conventional displacement.

In the drying step S7, while the air in the cleaning tank 16 is heated by the heater 23, hot air is discharged from the exhaust port 24 while the first blower 22 contains a lot of moisture. . The air discharged from the exhaust port 24 joins the outside air sent by the second blower 28 in the opening 26, the temperature and the humidity are reduced, and discharged to the outside. At the end of the drying phase all operations of the dishwasher are terminated.

In addition, at the time of a drying step (S7), with the temperature fall in the washing tank 16, the control apparatus 31 increases the air volume of the 1st air blower 22. When the temperature at the beginning of the drying step is high, the control device 31 decreases the exhaust air volume of the high temperature air by reducing the air volume of the first blower 22, thereby lowering the exhaust temperature outside the washing machine. As the temperature in the washing tank 16 decreases, the drying performance of the tableware 18 can be ensured by returning to the conventional displacement.

In addition, at the time of a drying step (S7), with the temperature fall in the washing tank 16, the control apparatus 31 reduces the air volume of the 2nd air blower 28. As shown in FIG. When the temperature at the beginning of the drying step is high, the control device 31 increases the air volume of the second blower 28 to increase the air volume of the air from the outside to lower the exhaust temperature. In a state where the temperature in the washing tank 16 is lowered, it is possible to prevent air from being discharged from the opening 26 more than necessary.

Moreover, since the dishwasher of this embodiment increases the air volume of external air, while reducing the exhaust amount of high temperature heating air in a drying step initial stage S6, exhaust temperature is lowered further. In the drying step S7, as the temperature in the cleaning tank 16 decreases, the control device 31 increases the air volume of the first blower 22 while reducing the amount of air of the second blower 28. . In a state where the temperature in the washing tank 16 is lowered, the exhaust amount can be made the same as the conventional air volume, thereby ensuring the drying performance of the tableware 18 and preventing the air from being discharged from the opening 26 more than necessary. .

Thus, according to this embodiment, humidity can be reduced, making it easy to lower the temperature of the air in the washing tank 16 discharged | emitted from an exhaust port, without reducing the drying performance of a tableware. As a result, the discharged air becomes excessively hot and condensation on the outside of the washing machine can be prevented.

Moreover, in the said embodiment, although the control apparatus 31 made the air volume of the 1st air blower 22 and the 2nd air blower 28 change with operation time, such as continuous operation and intermittent operation, it is limited to this. It doesn't happen. The control device 31 may change the rotational speed and change the air volume while continuously operating the first blower 22 and the second blower 28.

In addition, although the control apparatus 31 may control the air volume of the 1st blower 22 and the 2nd blower 28 based on the temperature in the washing tank 16, you may control based on the passage of time. good.

According to the present invention, the temperature of the air in the washing tank discharged from the exhaust port can be lowered and the humidity can be lowered without deteriorating the drying performance, thereby reliably preventing the discharged air from becoming too hot and condensation outside the washing machine. can do.

Claims (5)

In a dishwasher having each step of washing, rinsing and drying, A control device for controlling the dishwasher, a washing tank for storing dishes, a washing nozzle provided inside the washing tank, and a first blowing air for discharging air in the washing tank to the outside of the washing machine through an exhaust port. An apparatus, a temperature detecting apparatus for detecting a temperature in the cleaning tank, and a second blowing device for mixing outside air into the air discharged from the exhaust port, and the control apparatus according to the temperature detected by the temperature detecting apparatus. (A) controlling at least one of the operation time of the first blower, the air volume of the first blower, the operation time of the second blower, and the air volume of the second blower; dish washer. The method of claim 1, When the temperature in the washing tank reaches the first temperature, the control device causes the second blowing device to operate. dish washer. The method according to claim 1 or 2, At the beginning of the drying step, the control device controls the air volume of the first blower to be less than the air volume of the second blower. dish washer. The method according to claim 1 or 2, In the drying step, as the temperature in the cleaning tank is lowered, the control device controls the air volume of the first blower device to increase. dish washer. The method according to claim 1 or 2, In the drying step, as the temperature in the cleaning tank is lowered, the control device controls to reduce the air volume of the second blower device. dish washer.

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