KR100767883B1 - Dishwasher - Google Patents

Abstract

A cleaning nozzle 20 disposed in the cleaning tank 16, a first blower 22 for exhausting the air in the cleaning bath 16 through the inner exhaust port 24, And a second blower 28 which communicates with the exhaust passage 27 and which mixes the outside air with the air discharged from the inside air outlet 24, It is dishwasher equipped. The temperature and the humidity of air discharged from the inner air outlet 24 are lowered without lowering the drying performance of the tableware 18 and the risk of discharging hot air at a high temperature and condensation on the outside of the washing machine can be prevented .

Description

Dishwasher {DISHWASHER}

1 is a sectional view of a dishwasher according to Embodiment 1 of the present invention,

2 is a partially exploded perspective view of the dish washer according to Embodiment 2 of the present invention,

3 is a partially exploded perspective view of another dishwasher according to Embodiment 2 of the present invention,

4 is a sectional view of a conventional dishwasher.

DESCRIPTION OF THE REFERENCE NUMERALS

15: dishwasher main body 16: washing machine

20: Cleaning nozzle 22: First blower

24: inner exhaust port 26: outer exhaust port

27: exhaust path 27a, 27b: condensation recovery section

28: Second blower

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

The conventional dishwasher is configured as shown in Fig. 4 (see, for example, Japanese Patent Application Laid-Open No. 2001-046301). Hereinafter, the configuration will be described.

4, a washing tub 2 installed in a dishwasher main body 1 accommodated in a system kitchen is provided with an opening 3 at an upper portion thereof and a dish basket (not shown) for receiving the dishware 4 5) are disposed. A rotatable cleaning nozzle 6 is provided below the tableware basket 5. The cleaning water stored in the cleaning tank 2 is circulated by a pump 7 to be sprayed from the cleaning nozzle 6, (4). An air outlet 9 is provided in an upper portion of the front panel 8 provided in front of the washing tub 2 and air in the washing tub 2 is discharged from the air outlet 9 to the outside of the washer by the blower 10 And the drying of the tableware 4 is carried out.

A first rail 11 is fixed to a side of the washing tub 2 and a first rail 11 is supported by a second rail 12 fixed to the dishwasher main body 1 . When the dishware 4 is put in or taken out, the handle 13 provided on the front panel 8 is gripped and the washing tub 2 is pulled forward to receive the tableware 4 from the opening 3 above. Then, when the washing tub 2 is returned to the dishwasher main body 1 and the operation is started, the washing water is heated by the heater 14 disposed at the bottom of the washing tub 2, A cleaning process is performed from the cleaning nozzle 6 toward the tableware 4 to remove the contamination of the tableware 4. Thereafter, after the tableware 4 is rinsed, the drying process is executed to terminate the operation.

However, in such a conventional dishwasher, it is necessary to dispose the air outlet 9 in front of the washing tub 2 in order to discharge the air in the washing tub 2 while the dishwasher main body is housed in the system kitchen have. The air in the cleaning tank 2 discharged from the exhaust port 9 is almost the same as the temperature (about 80 ° C) in the cleaning tank 2. In other words, since the high-temperature air is discharged, there is a problem that a material which is likely to deteriorate or deform due to the high temperature can not be arranged in the vicinity of the exhaust port 9.

In addition, since the air containing a large amount of moisture is discharged at the beginning of the drying cycle, air of high temperature and high humidity is discharged. As a result, there has been a problem that condensation on the outside of the washing machine is caused by the temperature difference with the outside air.

The problem that the steam of the washing water leaks from the exhaust port 9 and condensation occurs on the front panel 8 on which the exhaust port 9 is disposed when the washing water temperature is high (about 50 ° C) in the washing / rinsing cycle .

In addition, in the conventional dishwasher, when the outside air is mixed in the air outlet 9, the amount of air in the washing tub 2 discharged by the blower 10 and the amount of outside air to be mixed can not be controlled. Therefore, in order to lower the temperature of the air with a large amount of water at the beginning of the drying cycle, a large amount of outside air is required for the air in the washing tub 2. That is, it is necessary to increase the amount of outside air or to reduce the amount of air discharged from the cleaning tank 2. In order to increase the amount of outside air more than necessary, it is necessary to increase the capacity of the blower 10, and as a result, the blower 10 becomes large. The large blower 10 is a disadvantage for realizing the object of accommodating as many dishes 4 as possible in a limited space. Further, since it is delayed in discharging the moisture in the washing tub 2, there is a problem that the drying period becomes longer.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a washing machine which can reduce the temperature and humidity of air from a cleaning tank discharged from an exhaust port without deteriorating the drying performance of the tableware, And it is an object of the present invention to provide a dishwasher capable of preventing condensation on the outside.

In order to achieve the above object, a dishwasher according to the present invention comprises: a cleaning tank for containing tableware; a cleaning nozzle for cleaning the tableware disposed in the cleaning tank; a first blower for discharging air in the cleaning tank through the inside air outlet; An outer air outlet communicating with the inner air outlet through the exhaust path and discharging the air to the outside of the cleaner, and a second blower communicating with the exhaust path and mixing ambient air into the air exhausted from the inner air outlet.

Further, the outer air outlet may be located above the inner air outlet.

By doing so, the temperature and humidity of the air in the washing tub discharged to the outside can be easily lowered without deteriorating the drying performance of the tableware, and adverse effects due to the heated air and condensation on the outside of the washing machine can be prevented.

Further, by disposing the outer air outlet above the inner air outlet, the condensation water condensed in the exhaust path can be prevented from overflowing to the outside of the washer.

A first aspect of the dishwasher according to the present invention is a dishwasher including a cleaning tank for storing tableware, a cleaning nozzle provided in the cleaning tank for cleaning the tableware, an inner exhaust opening opened to the cleaning tank, and an outer exhaust opening opened to the outside of the cleaner, And a second blower for mixing the outside air into the air discharged from the inside air outlet. The temperature and humidity of the air in the washing tub discharged to the outside of the washing machine can be easily lowered without deteriorating the drying performance of the tableware and adverse effects due to the heated air and condensation outside the apparatus can be prevented.

A second aspect of the present invention is a dishwasher in which an outer air outlet is disposed above an inner air outlet. The temperature and humidity of the air in the washing tub discharged from the outside air outlet can be lowered more efficiently without deteriorating the drying performance of the tableware and adverse effects due to the heated air and condensation on the outside of the washing machine can be prevented. At the same time, by disposing the outer air outlet above the inner air outlet, it is possible to prevent the condensation water condensed in the exhaust path from overflowing from the outer air outlet to the outside of the washer.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to embodiments.

(Embodiment 1)

1 is a side sectional view of a dishwasher according to a first embodiment of the present invention.

1, a washing tub 16 provided inside a dishwasher main body 15 accommodated in a system kitchen has an opening 17 at an upper portion thereof and a dish basket 19 for accommodating the dishware 18 is disposed . A washing nozzle 20 for spraying washing water is rotatably provided below the tableware basket 19 and a pump for circulating the washing water stored in the washing tub 16 while spraying the washing water from the washing nozzle 20 (21). A heater 23 for heating the washing water and the air blown by the first blower 22 is disposed at the bottom of the washing tub 16.

The inside air outlet 24 is disposed between the front panel 25 provided in front of the washing tub 16 and the washing tub 16 and the air in the washing tub 16 is communicated with the inside of the washing tub 16 by the first blower 22, And is configured to be exhausted from the exhaust port (24). The front panel 25 is provided with an outer exhaust port 26 for exhausting the air to the outside of the washer and the inner exhaust port 24 and the outer exhaust port 26 are communicated by an exhaust path 27.

The second blower 28 having substantially the same blowing ability as the first blower 22 sends the outside air to the blowing passage 29 disposed at the rear of the front panel 25 and blows air to the outside air outlet 26 . The air blowing path 29 is disposed in face-to-face contact with the exhaust path 27 in the front-rear direction. The air from the inside of the washing tub 16 discharged through the inner vent hole 24 and the outside air sent from the air blowing passage 29 are mixed with each other.

As shown in Fig. 1, the exhaust path 27 has a structure of bending downward and returning. That is, the air discharged from the inner air outlet 24 is once discharged downward and then discharged upward after passing through the return point of the air discharge path 27, and then discharged from the outer air outlet 26 to the outside of the dishwasher. In the present embodiment, the portion of the exhaust path 27 after passing through the turning point is adjacent to the air blowing path 29 through the wall.

A temperature detector 30 for detecting the temperature of the washing water or the washing tub 16 is provided in the lower portion of the washing tub 16. The controller 31 for sequentially controlling the cleaning, rinsing and drying steps controls the operation time of the first blower 22 and the second blower 28 by a signal from the temperature detector 30. [ An example of the control by the controller 31 will be described below.

The controller 31 operates the second blower 28 when the temperature detector 30 detects a certain temperature (for example, 50 占 폚) in the cleaning / rinsing cycle. In the next drying cycle, the controller 31 causes the second blower 28 to operate, while the first blower 22 is intermittently operated for the first few minutes and then continuously operated. Further, after a predetermined time elapses thereafter, the operation of the second blower 28 is stopped.

The first rail 32 is fixed to both sides of the cleaning tank 16. The first rail 32 is supported by the second rail 33 fixed to the dishwasher main body 15 so as to be movable in the fore-and-aft direction of the main body 15 in parallel. The user holds the handle 34 provided on the front panel 25 and draws the washing tub 16 forward to receive the tableware 18 from the opening 17. [

The operation and operation of the dishwasher in the above configuration will be described below.

The user holds the handle 34 provided on the front panel 25 and draws the cleaning tub 16 out of the dishwasher main body 15 to clean the dish basket 19 disposed in the cleaning tub 16, The tableware 18 is set.

Next, the user returns the washing tub 16 to the dishwasher main body 15 and starts the operation. When the operation is started, the washing water is heated by the heater 23 disposed on the inner bottom of the washing tub 16, and the heated washing water is sprayed toward the dishware 18 from the washing nozzle 20, The cleaning process is performed.

Thereafter, after the rinsing with water for several times is carried out, a heating and rinsing step of rinsing with heating at about 80 캜 by the heater 23 is executed.

After the heating and rinsing step, the drying process is carried out to dry the inside of the tableware 18 and the washing tub 16. In the drying process, the heated air, which contains a large amount of moisture and is high in temperature, is discharged from the inner air outlet 24 by the first blower 22 while heating the air in the cleaning tank 16 by the heater 23.

The air discharged from the inside air outlet 24 joins the outside air sent from the outside air outlet 26 by the second blower 28, so that the temperature and humidity are reduced and discharged to the outside. Upon completion of the drying cycle, all operations of the dishwasher main body 15 are terminated.

At the beginning of the drying cycle, the heated air containing a large amount of moisture is discharged from the inner air outlet 24. The dishwasher of the present embodiment can easily reduce the air volume of the first blower 22 by operating the second blower 28 at the same time and by intermittently operating the first blower 22 for several minutes . Therefore, the amount of air blown after the intermittent operation can be maintained as long as the conventional air blowing amount is maintained. As a result, the temperature of the air in the cleaning tank 16 discharged from the inner exhaust port 24 is lower than the temperature of the outside air supplied from the second blower 28, without causing harm to deteriorate the drying performance of the tableware 18 Can be effectively lowered. Further, since moisture contained in air is reduced, it is possible to prevent adverse effects due to heated air and condensation on the outside of the washing machine.

Conventionally, when the temperature of the washing water is high in the heating rinse cycle or the like, the steam of the washing water leaks from the inner air outlet 24, and the washing tub 16 is heated by the temperature detector 30 to a predetermined temperature (for example, 50 占 폚), the operation of the second blower 28 reduces the moisture of the air to be exhausted, thereby preventing the front panel 25 from condensation.

When the relationship between the elapsed time of each operation stroke and the temperature rise in the washing tub 16 can be grasped, the temperature detector 30 is not used and the operation of the second blower 28 The same effect can be obtained.

Since the second blower 28 is connected to the blowing passage 29, the outside air supplied by the second blower 28 and the air discharged from the inside of the washing tub 16 through the inside air outlet 24 And is reliably mixed at the outer exhaust port 26. In addition, condensation that occurs at the same time as mixing can be recovered in the exhaust path 27 to prevent condensation outside the washer.

Further, the exhaust path 27 and the air blowing path 29 are in surface contact with the cleaning tank 16 in the front-rear direction. The moisture in the air discharged from the outside air outlet 26 can be further reduced by condensing the moisture of the air discharged from the inside of the cleaning tank 16 because effective heat exchange is performed at the surface contact portion. Note that the exhaust path 27 and the air blowing path 29 are not necessarily limited to surface contact in the forward and backward directions. Or both of them may be in surface contact with each other in the left and right direction of the cleaning tank 16, or a configuration in which a blowing path 29 is provided in the exhaust path 27 may be employed. That is, the same effect can be obtained if the heat exchange can be performed.

Further, in order to improve the heat exchange performance, it is more preferable that the contact portion between the exhaust path 27 and the air blowing passage 29 is made of a material having a good thermoelectric effect. For example, metal materials such as iron, aluminum, copper, and stainless steel can be used.

Further, the dishwasher of the present embodiment can be applied to a dishwasher of the type that is embedded in a predetermined position of the kitchen. In this case, since the temperature of the air discharged from the outer air outlet 26 provided on the front surface is low, the safety can be further improved.

As described above, the dishwasher of the present embodiment includes the washing tub 16 provided in the dishwasher main body 15, the washing nozzle 20 provided at the inner bottom portion of the washing tub 16, A first blower 22 for exhausting the air in the washing tub 16 to the outside of the washer through the second air blower 24 and a second blower 28 for mixing the outside air into the air in the washing tub 16 discharged from the inside air outlet 24 . With this configuration, the temperature and humidity of the air discharged from the outer air outlet 26 can be easily lowered without deteriorating the drying performance of the tableware 18. Therefore, adverse effects due to the heated air and condensation on the outside of the washer .

The dishwasher according to the present embodiment has a blowing path 29 connected to the second blower 28 so that the air in the washing tub 16 passing through the exhaust path 27 So that heat exchange can be performed. With this configuration, the moisture of the air discharged from the outside exhaust port 26 can be further reduced by condensing the moisture of the air discharged from the cleaning tank 16 during the heat exchange in the exhaust path 27.

The cleaning tank 16 can be taken out of the dishwasher main body 15 so that the temperature of the air discharged from the outside air outlet 26 provided on the front surface of the dishwasher The safety can be further improved.

In the above embodiment, the air flow rates of the first blower 22 and the second blower 28 are changed by the continuous operation and the intermittent operation, that is, by the operation time. However, And the air volume may be changed.

(Embodiment 2)

A dishwasher according to a second embodiment of the present invention will be described with reference to Figs. 2 and 3. Fig. The same reference numerals are given to the same elements as those of the first embodiment, and the description will be simplified. The overall structure of the dishwasher will be described with reference to Fig.

As shown in Fig. 1, for example, the dishwasher main body 15 accommodated in the system kitchen has a washing tub 16 therein. The cleaning tank 16 has an opening 17 at an upper portion thereof and has a tableware basket 19 for holding the tableware 18 and at the same time spraying cleansing water stored in the cleaning tank 16 from the cleaning nozzle 20 And a pump 21 for circulating it. A heater 23 for heating the washing water and the air blown by the first blower 22 is disposed at the bottom of the washing tub 16. Further, the cleaning nozzle 20 is configured to be rotatable in the cleaning tank 16.

The inner air exhaust port 24 is disposed between the front panel 25 provided in front of the cleaning tank 16 and the cleaning tank 16 so that the air in the cleaning tank 16 can be separated from the inner air exhaust port 16 by the first blower 22. [ (Not shown).

As shown in Figs. 2 and 3, the dishwasher according to the second embodiment is provided with an outside vent hole 26 above the front panel 25. Fig. The outer exhaust port 26 communicates with the inner exhaust port 24 through the exhaust path 27 and discharges the air exhausted from the inner exhaust port 24 to the outside of the washer.

The second blower 28 having substantially the same blowing ability as the first blower 22 is configured to blow the outside air to the blowing path 29 disposed behind the front panel 25. [ The downstream end of the airflow path 29 is disposed so as to be in surface contact with the exhaust path 27 in the front-rear direction. The outside air outlet 26 is configured to mix the air discharged from the washing tub 16 via the exhaust path 27 and the outside air passed through the air blowing passage 29.

A temperature detector 30 for detecting the temperature of the washing water in the washing tub 16 is provided below the washing tub 16. The controller 31 for sequentially controlling the washing, rinsing and drying steps is configured to control the operation time of the first blower 22 and the second blower 28 by a signal from the temperature detector 30. [ An example of the control by the controller 31 will be described below.

The controller 31 operates the second blower 28 when the temperature detector 30 detects a certain temperature (for example, 50 ° C) in the washing / rinsing cycle. The controller 31 operates the second blower 28 and simultaneously operates the first blower 22 intermittently for several minutes and then continuously operates so that the second blower 28 ) Is stopped.

The first rail 32 is fixed to both sides of the cleaning tank 16. The first rail 32 is supported by the second rail 33 fixed to the dishwasher main body 15 so as to be movable in the front and rear direction of the dishwasher main body 15 in parallel. When the tableware 18 is to be put in or taken out, the handle 34 provided on the front panel 25 is held and the washing tub 16 is pulled forward to receive the tableware 18 from the opening 17 above.

Further, the exhaust path 27 is disposed below the inner exhaust port 24 of the cleaning tank 16. This configuration makes it difficult for the steam generated in the heating rinse cycle or the like to flow to the outside air exhaust port 26, thus preventing condensation from occurring outside the washing machine, and also facilitating condensation in the exhaust path 27.

As shown in Fig. 2, the dew condensed water recovered in the exhaust path 27 is returned to the washing tub 16 via the dew condensation returning unit 27a. With this configuration, the number of dew condensation from the exhaust path 27 is prevented from exceeding.

3, the exhaust path 27 and the first blower 22 are connected to the dew condensation recovery section 27b as a method of returning the dew condensation water collected in the exhaust path 27 to the cleaning tank 16, So that the dew condensation water is forcibly sucked by the first blower 22 and returned to the inside of the washing tub 16.

The operation and action of the dishwasher in the above configuration are as follows.

The user grasps the handle 34 provided on the front panel 25 and pulls the cleaning tub 16 out of the dishwasher main body 15. Then, the dishware 18 contaminated in the dish basket 19 in the washing tub 16 drawn out from the opening 17 opened upward is set.

Next, the user returns the washing tub 16 to the dishwasher main body 15 and starts the operation. When the operation is started, the washing water is heated by the heater 23 disposed on the inner bottom of the washing tub 16, and the heated washing water is sent to the washing nozzle 20 by the pump 21, A cleaning process is performed to remove the contamination of the tableware 18 by being sprayed toward the tableware 18 from the table 20.

Thereafter, after the rinsing with water for several times is carried out, a heating and rinsing step of rinsing with the heater 23 while heating the rinsing water to about 80 캜 is executed.

Thereafter, the air is heated by the heater 23, and the drying process of drying the inside of the tableware 18 and the cleaning tank 16 by the heated air is executed to terminate the operation. At the same time in the drying process, the air heated by the first blower 22 to a high temperature while containing a large amount of moisture is discharged from the inner air outlet 24.

In the early stage of the drying cycle, particularly, the heated air containing a large amount of moisture is discharged from the exhaust port 24. Here, the air volume of the first blowing means 22 can be easily lowered by operating the second blowing means 28 and intermittently operating the first blowing means 22 for several minutes. Therefore, the blowing amount after the intermittent operation can continue the drying process in the conventional state. That is, the temperature of the air in the cleaning tank 16 discharged from the exhaust port 24 is lowered easily by the outside air supplied from the second blowing means 28 without deteriorating the drying performance of the tableware 18, In addition, moisture in the air is reduced. As a result, it is possible to prevent adverse effects due to heated air and condensation on the outside of the washing machine.

Further, conventionally, when the washing water temperature becomes high in the heating rinse cycle or the like, when the steam of the washing water leaks from the inner air outlet 24, the front panel 25 often has condensation. Since the dishwasher of the present embodiment has the temperature detector 30, when it is detected that the cleaning tank 16 has reached a predetermined temperature (for example, 50 DEG C), by operating the second blower 28 , It is possible to reduce moisture in the exhausted air. With this configuration, condensation on the front panel 25 can be prevented. Particularly, since the outer exhaust port 26 is disposed above the inner exhaust port 24, the condensation water does not overflow the exhaust path 27 from the outer exhaust port 26 to the outside of the washer.

Further, the dishwasher of the present embodiment can be applied to a dishwasher of the type that is embedded in a predetermined position of the kitchen. In this case, since the temperature of the air discharged from the outer air outlet 26 provided on the front surface is low, the safety can be further improved.

The dishwasher of the present embodiment has the outside air outlet 26 on the downstream side of the inside air outlet 24 and communicates the inside air outlet 24 and the outside air outlet 26 by the exhaust path 27, And the second blower 28 is connected to the exhaust path 27. With this configuration, the air discharged from the cleaning tank 16 and the outside air are more reliably mixed, and the condensation generated simultaneously with the mixing is recovered in the exhaust path 27 with high efficiency to prevent condensation on the outside of the washer can do.

The dishwasher according to the present embodiment has a blowing path 29 connected to the second blower 28 so that the air in the washing tub 16 passing through the exhaust path 27 So that heat exchange can be performed. With this configuration, the moisture of the air discharged from the outside exhaust port 26 can be further reduced by condensing the moisture of the air discharged from the cleaning tank 16 during the heat exchange in the exhaust path 27.

Further, since the temperature of the air discharged from the outside air outlet 26 on the front surface can be lowered, the safety can be further improved. The condensation water that may be present in the exhaust path 27 during the heat exchange is returned to the cleaning tank 16 by the condensate recovering unit 27a or 27b provided in the exhaust path 27, There is no work.

2, in the dishwasher of the present embodiment, the exhaust path 27 is located below the inner exhaust port 24 of the cleaning tank 16. As shown in Fig. With this configuration, the steam generated in the heating rinsing process or the like is difficult to reach the outside exhaust port 26, thereby preventing dew condensation on the outside of the washing machine due to leakage of steam and facilitating condensation on the exhaust path 27 have.

The dew condensed water recovered in the exhaust path 27 is returned to the washing tub 16 through the dew condensation returning unit 27a so that the dew condensation water does not overflow from the exhaust path 27 to the outside.

3, the condensed water collected and collected in the exhaust path 27 flows through the condensate collecting portion 27b communicating the lowest portion of the exhaust path 27 and the first blower 22 It may be forcibly sucked by the first blower 22 and returned to the cleaning tank 16. [ With this configuration, it is possible to reliably discharge condensation water from the exhaust path 27, and also to reliably prevent leakage of condensation water to the outside.

As described above, the dishwasher of the present embodiment is configured such that the outside air outlet 26 is disposed above the inside air outlet 24, so that the dishwasher is more efficiently discharged from the outside air outlet The temperature and humidity of the air in the washing tub can be lowered. Therefore, it is possible to prevent adverse effects due to the heated air and condensation on the outside of the washer, and to prevent the condensation water condensed in the exhaust path from overflowing from the outside exhaust port to the outside of the washer by disposing the outside exhaust port above the inside exhaust port .

The dishwasher according to the present invention can improve the safety because the temperature and humidity of the air discharged from the inner air exhaust port on the front surface is lower. Therefore, in addition to the dishwasher using the heater for hot water boiling or the drying fan, The present invention can be applied to various devices such as a dryer, a cooking device, and the like.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to easily lower the temperature and humidity of the air in the washing tub discharged to the outside without deteriorating the drying performance of the tableware, and to prevent adverse influences by the heated air and condensation on the outside of the washing machine . By arranging the outside exhaust port higher than the inside exhaust port, dew condensation condensed in the exhaust path can be prevented from overflowing to the outside of the washer.

Claims (11)

In a dishwasher, A dishwasher main body, A washing tub for containing a tableware accommodated in the dishwasher main body, A cleaning nozzle installed in the cleaning tank, A first blower for discharging the air in the cleaning tank to the outside through an inside air outlet opened to the cleaning tank side and an outside air outlet opened to the outside, And a second blower for mixing outside air into the air discharged from the inside air outlet dish washer. The method according to claim 1, And an exhaust path communicating the inner exhaust port and the outer exhaust port, wherein the exhaust path communicates with the second blower dish washer. The method according to claim 1, An exhaust path communicating the inner exhaust port and the outer exhaust port, Further comprising a blowing path communicating with the second blower, Wherein the air flow path is connected to the exhaust path dish washer. The method of claim 3, And a structure in which air passing through the exhaust path and air passing through the air flow path mutually exchange heat dish washer. The method of claim 3, Wherein the exhaust path and the air flow path are in surface contact with each other dish washer. The method according to claim 1, And an exhaust path communicating the inner exhaust port and the outer exhaust port, wherein the exhaust path bends downward and returns dish washer. The method according to claim 1, And an exhaust path communicating the inner exhaust port and the outer exhaust port, wherein the outer exhaust port is disposed above the inner exhaust port dish washer. 8. The method of claim 7, And at least a part of the exhaust path is disposed above the inner exhaust port dish washer. 8. The method of claim 7, And a dew condensation unit for collecting condensation water generated in the exhaust path, wherein the dew condensation unit is connected to the cleaning tank, and the condensation water is returned to the cleaning tank dish washer. 10. The method of claim 9, And the dew condensation recovery unit is communicated with the first blower dish washer. The method according to claim 1, The washing tub may be drawn out from the dishwasher main body dish washer.

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