KR20020047870A - Steam exhausting apparatus of Dishwasher - Google Patents

Abstract

PURPOSE: A steam discharging apparatus of a dishwasher is provided to enhance a safety degree of the dishwasher by decreasing a temperature and moisture of a steam discharged from a washing vessel. CONSTITUTION: A steam discharging apparatus of a dishwasher comprises a fan housing(62), a blowing fan(60) and a drive motor(50) for driving the blowing fan. The fan housing(62) is mounted between a case(10) and a washing vessel(12), and forms a steam passage connected from an inside of the washing vessel to an outside of the case. The fan housing(62) includes a steam intake port(62a) connected at the inside of the washing vessel and an exterior air intake port(62b) communicated at an exterior. The steam intake port(62a) is opposite to the exterior air intake port(62b). The steam intake port(62a) directs to the washing vessel side, and the exterior air intake port(62b) directs to the drive motor side.

Description

Steam exhausting apparatus of Dishwasher

The present invention relates to a dishwasher, and more particularly, to a steam discharge device of the dishwasher that can lower the temperature and humidity of the steam discharged in the drying process.

In general, the dishwasher is a device for automatically washing the dish by spraying the washing water mixed with detergent, it is divided into a door type and a drawer type according to the storage structure of the dish.

As shown in FIG. 1, the drawer-type dishwasher includes a case 10, a washing tank 12 having an open top surface removably mounted in the case 10, and storing dishes in the washing tank 12. It comprises a rack 14, a spray arm 20 mounted to the lower portion of the washing tank 12, and a water feed pump 22 for supplying the washing water to the spray arm 20.

In addition, the bottom of the washing tank 12 is provided with a heater 30 for heating the washing water.

According to the general drawer-type dishwasher as described above, the washing tank 12 is removed from the case 10 to store the dishes in the rack 14, the washing tank 12 is pushed into the case 10, and then the water supply pump 22 By operating the washing water is supplied to the injection arm 20, the washing arm 20 is rotated by the pressure of the washing water while the washing water is sprayed to the dish side to achieve the washing action. The washing water sprayed from the injection arm 20 and finished washing of the dishes is filtered while passing through the filter 24 installed at the bottom of the washing tank 12, and then circulated through the washing flow path supplied to the feed water pump 22. .

The washing water circulated through the washing passage is heated by the heater 30 to increase its temperature, thereby increasing the washing effect.

After the washing process is finished, the washing process is dried, the drying process is carried out to dry the dishes. The drying process is carried out in order that the water remaining in the tableware by the operation of the heater 30 is evaporated by the heat evaporation, the steam thus formed is discharged to the outside of the case (10).

In addition, the dish washer is provided with a steam discharge device for discharging the steam generated in the drying process to the outside, the steam discharge device is a blowing fan mounted between the case 10 and the washing tank 12 as shown in FIG. 40 and a drive motor 50 for driving the blowing fan 40.

Here, the blower fan 40 has a fan housing 42 having a suction port 42a communicating with the inside of the washing tank 12 and a discharge port 42b facing the case 10, and a centrifugal mounted in the fan housing 42. It consists of a fan 44, the discharge port 42b of the fan housing 42 is connected 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 12 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 centrifugal fan (44). By discharging to the outside of the case 10, the dishes in the washing tank 12 are completely dried.

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. of normal temperature). Therefore, a problem arises that an injury occurs when a person comes into contact with steam.

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

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a steam discharging device for a dish washer, which helps improve the stability of use of the dish washer by lowering the temperature and humidity of the steam discharged from the washing tank in the drying process. .

1 is a perspective view showing the structure of a general dish washer.

Figure 2 is a cross-sectional view showing the structure and operating state of the steam exhaust device according to the prior art.

Figure 3 is a cross-sectional view showing the structure and operating state of the steam exhaust device according to an embodiment of the present invention.

Figure 4 is a perspective view showing the structure of a centrifugal fan applied to the steam discharge device according to an embodiment of the present invention.

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

10: case 12: washing bath

14: rack 20: injection arm

22: water supply pump 30: heater

46: discharge pipe 50: drive motor

60: blower fan 62: fan housing

62a: steam inlet 62b: outdoor air inlet

62c: condensate outlet 62d: outlet

64: centrifugal fan 641: blocking film

66: baffle

In order to achieve the above object, the steam discharge device of the dishwasher is provided between a fan and a washing tank, and a fan fan comprising a fan housing and a centrifugal fan mounted in the fan housing to form a steam flow path leading from the inside of the washing tank to the outside of the case. It comprises a drive motor for driving the blowing fan; The fan housing has a structure in which a steam suction port connected to the inside of the washing tank and an outside air suction port communicating with the outside of the washing tank are formed, so that the steam and the outside air in the washing tank are sucked together and mixed and discharged.

Here, the steam intake port and the outside air intake port of the fan housing is formed in a position facing each other, the centrifugal fan is a structure having a blocking film in the middle, mounted between the steam intake port and the outside air intake port is sucked in the opposite direction through each intake port It is made of a structure to prevent the collision of and steam.

In addition, the fan housing is provided with a condensate outlet for allowing condensate generated by mixing the sucked air and steam into the washing tank and a plurality of baffles for increasing the mixing efficiency of the sucked air and the steam.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4, and like reference numerals refer to like parts of the present invention.

The steam discharge device of the drawer type dishwasher according to the embodiment of the present invention is mounted between the case 10 and the washing tank 12, as shown in Figure 3 to the steam flow path leading to the outside of the case 10 in the washing tank 12; It comprises a blow fan (60) consisting of a fan housing (62) to be formed and a centrifugal fan (64) mounted in the fan housing (62), and a drive motor (50) for driving the blow fan (60). The fan housing 62 has a structure in which a steam inlet 62a connected to the inside of the washing tank 12 and an external air inlet 62b communicating with the outside of the washing tank 12 are formed.

Here, the steam inlet (62a) and the outside air inlet (62b) is formed in a position facing each other, the steam inlet (62a) is directed to the washing tank 12 side, the outside air inlet (62b) in contrast to the drive motor 50 side Is headed.

The centrifugal fan 64 has a structure in which a blocking film 641 is provided in the middle, as shown in FIG. 4, and is mounted between both suction ports 62a and 62b to prevent direct collision of steam and external air introduced from opposite directions. .

In addition, the fan housing 62 includes a condensate outlet 62c for mixing condensed water generated by mixing the sucked air and steam into the washing tank 12, and a plurality of baffles 66 for increasing the mixing efficiency of the sucked outside air and steam. Is provided, and a separation wall 621 is formed below the centrifugal fan 64 inside the fan housing 62 to prevent the generated condensed water from flowing into the space between the washing tank 12 and the case 10.

Referring to the operation of the steam discharge device of the dishwasher according to the embodiment of the present invention configured as described above are as follows.

First, in the drying process, the steam in the washing tank 12 is introduced into the fan housing 62 through the steam inlet 62a by the operation of the blower fan 60, and at the same time, the outside air outside the washing tank 12 opens the outside air inlet 62b. Through the fan housing 62 is introduced.

The steam and the outside air introduced in this way initially flow in opposite directions, but the flow direction is changed to the discharge port 62d by the blocking film 641 provided in the centrifugal fan 64, thereby preventing direct collisions with each other. They mix with each other as they flow toward 62d. Here, the flowing steam and the outside air are more efficiently mixed while forming turbulence by the baffle 66.

The steam mixed with the relatively low outside air is cooled to some extent and condensed and discharged to the outside of the case 10 in a low humidity state. Since the steam discharged to the outside of the case 10 has a low temperature and humidity, it hardly forms condensate.

The condensed water generated in the fan housing 62 due to the condensation of steam flows down, flows back into the washing tank 12 through the condensate outlet 62c, and is drained through the drainage flow path.

As described above, according to the steam discharging device of the dish washing machine according to the present invention, steam generated in the drying process is mixed with the outside air and discharged in a cooled state, and condensate generated in the mixing process with the outdoor air is introduced into the washing tank and drained. Therefore, it helps to improve the use stability and the commerciality of the dishwasher.

Claims (5)

A blowing fan comprising a fan housing mounted between the case and the washing tank to form a steam flow path from inside the washing tank to the outside of the case, and a centrifugal fan mounted in the fan housing; Drive motor for driving the blowing fan In the steam discharge device of the dishwasher comprising a; The fan housing has a structure in which a steam inlet connected to the inside of the washing tank and an outside air inlet communicating with the outside of the washing tank are formed, so that the steam and the outside air in the washing tank are sucked together and mixed and discharged. The method of claim 1, The steam inlet and the outside air inlet of the fan housing are formed at positions facing each other, The centrifugal fan has a structure with a blocking film in the middle, and is installed between the steam inlet and the outside air inlet to prevent collision between outside and steam sucked in the opposite direction through each inlet, and discharges the steam of the dishwasher. Device. The method of claim 1, The fan housing is a steam discharging device of the dishwasher, characterized in that the condensate outlet for allowing the condensate generated by mixing the sucked air and steam is introduced into the washing tank. The method of claim 1, The fan housing is a steam discharge device of the dishwasher, characterized in that a plurality of baffles are provided to increase the mixing efficiency of the sucked air and steam. The method of claim 1, And a separation wall formed below the centrifugal fan inside the fan housing to prevent the generated condensate from entering the space between the washing tank and the case.