KR100488025B1 - Apparatus for condensation and dry of dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher, in particular a condensation drying apparatus of a dishwasher capable of drying dishes in a circulating flow path that mixes high temperature steam inside a washing tank with cold air outside and introduces the mixed air back into the washing tank. It is about.

The condensation drying apparatus of the dish washing machine according to the present invention includes a fan housing having a steam inlet communicating with the inside of the washing tank and an external air inlet communicating with the outside; An impeller that is rotated by a motor in the fan housing and discharges hot steam sucked into the steam inlet and cold air sucked through the outside air inlet; A scroll in which air discharged by the impeller is mixed to form a discharge flow path of air having a low temperature and condensation of moisture; A scroll for mixing air discharged by the impeller to guide air having a low temperature and condensation of moisture; An inlet for introducing the mixed air discharged along the scroll by the impeller and the condensed water droplets into the washing tank; It characterized in that it comprises a discharge passage for discharging the mixed air as much as the amount of air sucked through the outside air inlet to the outside.

Description

Apparatus for condensation and dry of dishwasher}

In the present invention, the dishwasher, in particular, the condensation of the dishwasher to dry the dishes using a circulation passage for mixing the high temperature water vapor in the washing tank and the outside cold air to introduce the mixed air back into the washing tank It relates to a drying apparatus.

Specifically, the temperature of the inside of the washing tank by allowing the hot water vapor and the external cold air to be sucked and discharged by the respective impellers, mixed on the discharge path and introduced into the washing tank at the same time, on the suction passage. It relates to a condensation drying device of the dishwasher to improve the drying performance while lowering.

As shown in FIG. 1, a general conventional dishwasher includes an inner panel 110 formed to allow water collection and drainage, and a sump 111 formed at a lower end of the inner panel 110. In addition, the upper and lower racks (120) and 130, which are installed to load the tableware 1 in the inner panel 110, and water injection for each adjacent to each of the racks (120, 130) Upper and lower nozzle arms 121 and 131, a cleaning filter 112 installed in the sump 111 to filter the collected wash water, and the sump 111 Drainage pump 113 and the drainage pipe 114 and the circulation pump for dispensing and circulating the purified water through the cleaning filter 112 to the upper and lower parts mounted on the lower end (Circulating Pump) 140 and purified water discharged by the circulating pump 140, the upper nozzle arm 121 and the lower nozzle arm (1) 31 is mounted between the upper and lower flow paths 151 and 152 for guiding toward the lower side, and the lower flow path 152 and the lower nozzle arm 131 may not spray water toward the lower rack 130 in some cases. It is composed of a flow path blocking valve 153 that prevents to block.

The circulation pump 140 communicates with the lower end of the sump 111 and the suction port 148 and the upper and lower discharge ports 142 and 143 so as to branch toward the upper nozzle arm 121 and the lower nozzle arm 131, respectively. The upper and lower discharge ports 142 and 143 are formed to be connected to the upper and lower flow paths 151 and 152, respectively, and the flow path blocking valve 153 generally includes a solenoid valve. will be.

Referring to the operation principle of the conventional dishwasher as described above based on the accompanying drawings as follows.

1 is a view illustrating an operating state of a general dishwasher, and FIG. 1 illustrates a state in which water is sprayed on the upper rack 120 and the lower rack 130 to be washed as a whole.

As shown in FIG. 1, first, a predetermined amount of clean water is supplied from outside and collected in the sump 111, and then flows into the circulation pump 140 through the suction port 148. When the circulation pump 140 is operated, the water inside is forcibly discharged through the upper and lower discharge ports 142 and 143 of the circulation pump 140, and the upper and lower nozzles are formed along the respective flow paths 151 and 152. Water is supplied to the arms 121 and 131, and the water is sprayed upward through the nozzle arms 121 and 131 toward the upper and lower racks 120 and 130, respectively. The stored tableware 1 is washed. Subsequently, the contaminated washing water sprayed on the dish 1 flows down through the inner panel 110 and is filtered through the cleaning filter 112, and then collected in the sump 111 and then through the suction port 148. The recirculation pump 140 is re-introduced and repeatedly circulated to wash the dishes 1 cleanly, and after repeated washing for a predetermined time, the washing water is sucked into the drain pump 113 and discharged to the outside through the drain pipe 114. This completes the cleaning. In this case, the capacity of the circulation pump 140 is divided up and down half to function.

In general, the washing is performed in the order of pre-washing, main washing, rinsing, heating rinsing, and drying. After each step, a predetermined amount of water is supplied to perform a washing or rinsing, and then the draining operation is repeated. As such, in the dishwasher having a sequence of pre-washing, main washing, rinsing, heating, drying, and the like, the water supply state of the water is controlled through a control valve at each time, according to a predetermined course.

On the other hand, Figure 2 is a steam discharge device of the conventional dishwasher.

Referring to FIG. 2, the washing process is completed, and after the washing water is drained, a drying process of drying the dishes is performed. The drying process is carried out in order that the water remaining in the tableware is evaporated by the operation of the heater to evaporate, and the steam thus formed is discharged to the outside of the case 10.

In addition, the dishwasher is provided with a steam discharge device for discharging the steam generated during the drying process to the outside, the steam discharge device is mounted between the case 10 and the washing tank 110 as shown in FIG. 40 and a drive motor 50 for driving the scroll 40.

Here, the scroll 40 has a fan housing 42 in which the suction port 42a communicates with the inside of the washing tank 110, and the discharge port 42b is disposed toward the case 10, and an impeller mounted in the fan housing 42. 44, and the discharge port 42b of the fan housing 42 extends to the outside of the case 10 through the discharge pipe 46.

According to the conventional steam discharge device, the steam generated in the washing tank 110 during the drying process through the steam flow path formed by the fan housing 42 and the discharge pipe 46 by the rotation operation of the impeller 44 (10) The dishes in the washing tank 12 are completely dried by being discharged to the outside.

However, according to the prior art, the steam generated during the drying process is immediately discharged to the outside of the case 10 even though it is maintained at a temperature of about 70 ° C., which is much higher than the air outside the case 10 (approximately 20 ° C at room temperature). Therefore, a problem arises that an injury occurs when a person comes into contact with steam. In addition, there is a problem that the drying performance is lowered by leaving the washing tank in a state in which the high temperature water vapor is discharged to the outside to dry.

In addition, the steam discharged to the outside of the case 10 is immediately condensed due to the temperature difference with the outside air to form a droplet, and the water droplets adhere to the case 10, the outer surface of the case 10 to dirty the outer surface. There is also a problem.

The present invention has been made to solve the above problems.

The first purpose is to dry the dishes inside the washing tank in the dish washer without mixing hot steam directly to the outside and condensing moisture by mixing with cold air by the impeller, and then drying the dried cold air back into the washing tank. It is an object of the present invention to provide a condensation drying apparatus of a dishwasher which can be introduced to lower the internal temperature to improve drying performance.

A second object is to provide a condensation drying apparatus of a dish washer that can be formed in a concave-convex shape on a passage through which high temperature water vapor passes to increase the contact area of air to increase the condensation and cooling effect.

Condensation drying apparatus of the dishwasher according to the present invention for achieving the above object,

A fan housing having a steam suction port communicating with the inside of the washing tank and an external air suction port communicating with the outside;

An impeller that is rotated by a motor in the fan housing and discharges hot steam sucked into the steam inlet and cold air sucked through the outside air inlet;

A scroll in which air discharged by the impeller is mixed to form a discharge flow path of air having a low temperature and condensation of moisture;

A scroll for mixing air discharged by the impeller to guide air having a low temperature and condensation of moisture;

An inlet for introducing the mixed air discharged along the scroll by the impeller and the condensed water droplets into the washing tank;

It characterized in that it comprises a discharge passage for discharging the mixed air as much as the amount of air sucked through the outside air inlet to the outside.

Preferably, the scroll and the discharge passage is formed in the concave-convex shape to increase the contact area between the air discharged through the impeller and the outside air to increase the cooling efficiency.

Preferably, the impeller is characterized by consisting of an upper impeller for sucking and discharging the high temperature water vapor inside the washing tank, and a lower impeller for sucking and discharging the cold air outside.

Hereinafter, with reference to the accompanying drawings as follows.

3 is a configuration diagram of a condensation drying apparatus of the dish washing machine according to the embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along the line A-A 'of FIG.

Referring to FIG. 3, a fan housing 205 mounted between the case 200 and the washing tank 210 and having a steam inlet 205a communicating with the inside of the washing tank and an outside air inlet 205b communicating with the outside; Impellers 202 and 203 mounted in the fan housing 205 and rotated by the motor 201 to discharge hot steam sucked into the steam inlet 205a and cold air sucked through the outside air inlet 205b, respectively. ; A scroll 204 for mixing the air discharged by the impellers 202 and 203 to lower the temperature and forming a flow path such that moisture is condensed and discharged into the dried air; By the inlet 213 and the amount of air sucked into the mixed air discharged by the impeller 202,203 and the scroll 204 into the inside by the pressure inside the washing tank 210 to lower the air temperature inside the washing tank. It is a configuration including a discharge passage 214 to be discharged to the outside.

Referring to the accompanying drawings, the condensation drying apparatus of the dish washing machine according to the embodiment of the present invention configured as described above is as follows.

3 and 4, the washing process is finished in the dish washing machine, and after the washing water is drained, a drying process of drying the dishes is performed. In the drying process, water remaining in the dishes is heated and evaporated by the operation of the heater.

At this time, when the plurality of impellers 202 and 203 are rotated by the driving of the motor 201, the high temperature steam A inside the washing tank 210 is rotated by the impellers 202 and 203 and the cold air B of the outside air. The mixture is condensed and dried, and the dishes are dried through a circulation process in which air C condensed and dried is introduced into the washing tank 210 again.

To this end, the steam inlet 205a communicating with the inside of the washing tank 210 is processed at the upper portion of the fan housing 205 mounted between the case 200 and the washing tank 210, and the outside air inlet 205b is disposed at the lower portion thereof. It is a processed structure. Also configured is a scroll 204 consisting of impellers 202 and 203 mounted in a fan housing.

Here, the steam inlet 205a and the outside air inlet 205b are formed at positions facing each other, the steam inlet 205a is processed on the washing tank 210 side, and the air inlet 205b is processed on the motor side, on the contrary. Will be.

Therefore, the impellers 202 and 203 connected by the driving of the motor 201 rotate, and the high temperature water vapor A in the washing tank 210 flows through the steam inlet 205a by the rotation of the upper impeller 202. The exhaust air is discharged along the scroll 204 through the outside air inlet 205b by the rotation of the lower impeller 203.

At this time, the high temperature steam (A) discharged along the scroll 204 and the external cold air (B) is mixed with each other, the temperature is lowered, the moisture is condensed and discharged to the dried air (C).

As such, the condensed dried air discharged along the scroll 204 is sent back to the inside of the washing tank through the inlet 213 according to the pressure inside the washing tank 210, and at the same time, the condensed water droplets are also introduced into the washing tank 210. .

Here, protrusions 204a and 214a having irregularities are formed in the housings of the scroll 204 and the discharge passage 214. These protrusions 204a and 204b expand the contact area with air on the flow path, thereby condensing moisture between the mixed air discharged from the impellers 202 and 203 and the external cold air, thereby further improving drying performance.

In addition, the amount of mixed air introduced from the outside through the lower impeller 203 is discharged through the outlet 206 connected to the fan housing 210, so that the air pressure inside the washing tank is maintained. Then, the discharge passage 214 discharges the mixed air as much as the amount of air sucked through the outside air inlet to the outside.

In this way, an impeller is formed on a circulation passage for suctioning and discharging hot steam and cold air between the inside of the washing tank and the fan housing to allow suction and discharge of the mixed air, thereby preventing the drying process in the dishwasher. It can be done more efficiently.

As described above, according to the condensation drying apparatus of the dish washing machine according to the present invention, by using an impeller on the steam suction passage, after mixing the cold air and the high temperature steam after washing, the washing tank is introduced again into the washing tank. It is possible to improve the drying performance by re-condensing and drying the saturated steam of high temperature with relatively low temperature air.

In addition, by forming a concave-convex shape on the flow path through which the mixed air is discharged to increase the contact area of the air can increase the condensation / cooling effect.

In addition, by discharging only the minimum air dried and the temperature is reduced to the outside, there is an effect that can improve the safety / hygiene.

1 is a longitudinal sectional view showing the configuration of a general dish washer.

Figure 2 is a block diagram showing a steam discharge device of the conventional dishwasher.

Figure 3 is a longitudinal sectional view showing a condensation drying apparatus of the dishwasher according to the embodiment of the present invention.

Figure 4 is a cross-sectional view showing a condensation drying apparatus of the dishwasher according to the embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

200 ... case 201 ... motor

202,203 ... Impeller 204 ... SCROLL

205 Fan housing 205a Steam inlet

205b ... Outside air inlet 206..Outlet

213 Inlet 214 Outlet Euro

Claims (3)

A fan housing having a steam suction port communicating with the inside of the washing tank and an external air suction port communicating with the outside; An impeller that is rotated by a motor in the fan housing and discharges hot steam sucked into the steam inlet and cold air sucked through the outside air inlet; A scroll in which air discharged by the impeller is mixed to form a discharge flow path of air having a low temperature and condensation of moisture; A scroll for mixing air discharged by the impeller to guide air having a low temperature and condensation of moisture; An inlet for introducing the mixed air discharged along the scroll by the impeller and the condensed water droplets into the washing tank; Condensation drying apparatus of the dishwasher comprising a discharge passage for discharging the mixed air as much as the amount of air sucked through the outside air inlet to the outside. The method of claim 1, The condensation drying apparatus of the dishwasher, which is formed inside the scroll and the discharge passage in a concave-convex shape, thereby increasing the contact area between the air discharged through the impeller and the outside air to increase the cooling efficiency. The method of claim 1, The impeller is a condensation drying apparatus of the dishwasher, characterized in that the upper impeller for sucking and discharging the high temperature water vapor inside the washing tank, and the lower impeller for sucking and discharging the cold air outside.