Patent Publication Number: US-11375873-B2

Title: Air blower and dish washer having the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a divisional application of U.S. Ser. No. 15/364,957, filed on Nov. 30, 2016. In the United States Patent and Trademark Office and claims priority from Korean Patent Application No. 10-2015-0168759, filed on Nov. 30, 2015, in the Korean Intellectual Property Office, the disclosures of each of which are incorporated herein by reference in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     Apparatuses and methods consistent with the present disclosure relate to an air blower and a dish washer having the same, and more particularly, to an air blower capable of controlling a flow direction of steam discharged from the inside of a dish washer, and the dish washer having the same. 
     Description of the Related Art 
     A dish washer is an apparatus injecting high-pressure wash water to dishes to wash the dishes. Generally, in the dish washer, a pre-wash step, a main wash step, a rinse step, and a dry step are performed. In the pre-wash step, leavings on the dishes are removed by injecting wash water without injecting a detergent. In the main wash step, the dishes are washed by allowing the detergent to be injected by a detergent supply device while injecting the wash water. 
     The dish washer is configured to include a body in which a wash tank is provided, a basket installed to so as to be movable forward and rearward in the wash tank while accommodating dishes, an injection nozzle provided at upper and lower portions of the basket to inject wash water, and the like, and the wash water injected from the injection nozzle may wash the dishes. 
     In a dish washer according to the related art, after washing dishes using hot water, latent heat remaining in the dishes, and the like, due to the hot water radiates outside the dishes. Water remaining on a surface of the dish is evaporated by the latent heat, such that the dish is dried, or the dish is dried by injecting hot air to the dish using a separate heater. 
     In the case of using latent heat at the time of drying the dishes as described above, it took a long time to dry the dishes, such that drying efficiency was significantly decreased, and a drying state was not good. Further, in the case of drying the dish by supplying hot air using the separate heater, there was a problem in that a large amount of energy was consumed, such that an electric charge was expensive. 
     SUMMARY OF THE INVENTION 
     Exemplary embodiments of the present invention overcome the above disadvantages and other disadvantages not described above. Also, the present invention is not required to overcome the disadvantages described above, and an exemplary embodiment of the present invention may not overcome any of the problems described above. 
     The present disclosure provides an air blower capable of decreasing a dry time of a dish washer. 
     In addition, the present disclosure provides an air blower capable of controlling a flow direction of hot steam discharged from the inside of a dish washer, and a dish washer having the same. 
     According to an aspect of the present disclosure, a dish washer includes: a body; a wash tank provided in the body in order to wash dishes therein; a door rotatably coupled to the body to open and close the wash tank; an air blower spraying out air jet from a front surface of the body to the front of the body so as to allow wet steam in the wash tank to forcedly flow to the front when the door is opened. 
     The air jet may be sprayed out at a speed faster than a natural discharge speed of air in the wash tank. 
     The air blower may include: a blower duct installed between the outside of the wash tank and the inside of the body and having an outlet facing the front surface of the body; and a blower fan communicating with the blower duct to supply external air to the outlet through the blower duct. 
     The blower fan may be provided between the outside of the wash tank and the inside of the body to thereby be positioned at one side surface of the body. 
     The body may have a communication hole communicating with the outside in one side surface, and the blower fan may suck external air from the communication hole to discharge the sucked air to the blower duct. 
     The blower fan may be any one of a centrifugal fan, an axial flow fan, and a cross flow fan. 
     The dish washer may further include an automatic door opening device automatically opening the door after a wash process is terminated, wherein the automatic door opening device is positioned between an upper portion of the wash tank and the body, and the outlet is positioned at both sides of the automatic door opening device, respectively. 
     A partition wall partitioning the outlet into a plurality of regions may be provided in the blower duct. 
     The blower duct may include: a main channel communicating with the blower fan and positioned in parallel with a width direction of the door; a first channel branched from the main channel and communicating with a first outlet positioned at one side of an automatic door opening device; and a second channel branched from the main channel and communicating with a second outlet positioned at the other side of the automatic door opening device. 
     The blower fan may be positioned to be closer to the first channel than the second channel, and the main channel may have a rear surface positioned to be inclined downward so that the second channel is close to the front. 
     The blower duct may further include a channel guide wall installed in each of the channels to guide a flow of the air flowing through the blower fan. 
     The channel guide wall may include: a first channel guide wall installed in the main channel to be positioned in parallel with the rear surface of the blower duct; and a second channel guide wall installed in the first channel and positioned to be perpendicular to the first channel guide wall. 
     The channel guide wall may further include a third channel guide wall installed in a boundary between the main channel and the second channel or the inside of the second channel and positioned to be parallel with the second channel guide wall. 
     The dish washer may further include an automatic door opening device automatically opening the door after a wash process is terminated, wherein the automatic door opening device is positioned between an upper portion of the wash tank and the body, and the blower duct is positioned above the automatic door opening device. 
     The blower duct may have a channel in which air flows, wherein the channel is provided to be inclined upwardly toward the outlet. 
     The air blower may be installed in plural, and each of the air blowers may be positioned between an upper portion of the wash tank and the body. 
     According to another aspect of the present disclosure, an air blower blowing wet steam discharged between a body and a door of dish washer when a wash process of the dish washer is terminated and the door is opened by an automatic door opening device, includes: a blower duct positioned at an upper portion of the body and having an outlet so as to face a front surface of the body; and a blower fan communicating with the blower duct to allow air to flow to the blower duct. 
     A partition wall partitioning the outlet into a plurality of regions may be provided in the blower duct. 
     The blower duct may include: a main channel communicating with the blower fan and positioned in parallel with a width direction of the door; a first channel branched from the main channel and communicating with a first outlet positioned at one side of an automatic door opening device; and a second channel branched from the main channel and communicating with a second outlet positioned at the other side of the automatic door opening device. 
     The blower duct may further include a channel guide wall installed in each of the channels to guide a flow of air flowing through the blower fan. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING FIGURES 
       The above and/or other aspects of the present invention will be more apparent by describing certain exemplary embodiments of the present invention with reference to the accompanying drawings, in which: 
         FIG. 1  is a perspective view schematically illustrating a dish washer according to an exemplary embodiment of the present disclosure; 
         FIG. 2  is a side view of the dish washer according to the exemplary embodiment of the present disclosure; 
         FIG. 3  is a view illustrating an air blower according to a first exemplary embodiment of the present disclosure; 
         FIG. 4  illustrates a modified example of the air blower illustrated in  FIG. 3 ; 
         FIG. 5  illustrates another modified example of the air blower illustrated in  FIG. 3 ; 
         FIG. 6  illustrates still another modified example of the air blower illustrated in  FIG. 3 ; 
         FIG. 7  is a view illustrating an air blower according to a second exemplary embodiment of the present disclosure; 
         FIG. 8  is a view illustrating an air blower according to a third exemplary embodiment of the present disclosure; 
         FIG. 9  is a view illustrating a wash process cycle of a dish washer according to the related art; and 
         FIG. 10  is a view illustrating a wash process cycle of the dish washer according to the exemplary embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS 
     Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to  FIGS. 1 to 10 . The exemplary embodiments described below will be described on the basis of exemplary embodiments most suitable for understanding technical features of the present disclosure, but the technical features of the present disclosure are not limited by the exemplary embodiment to be described. That is, the present disclosure may be implemented as the exemplary embodiment described below. 
     Therefore, the present disclosure may be variously modified within the technical scope of the present disclosure through the following exemplary embodiments, and these modified exemplary embodiments are also included in the scope of the present disclosure. Further, in order help the understanding of the exemplary embodiments described below, among components having the same action as each other, related components are denoted by the same or similar reference numerals. 
     Hereinafter, a configuration of a dish washer according to an exemplary embodiment of the present disclosure will be described with reference to the accompanying drawings. Although a built-in type dish washer built in a separated installation space between furniture or walls is described by way of example of the dish washer according to the present disclosure, the present disclosure may be applied to a free-standing type dish washer which is not built-in but is independently used. 
       FIG. 1  is a perspective view schematically illustrating the dish washer according to an exemplary embodiment of the present disclosure. Referring to  FIG. 1 , the dish washer  10  includes a body  20  form an exterior thereof, a wash tank (or tub) (not illustrated) provided in the body  20 , a door  30  rotatably installed on a front surface of the body  20 , an automatic door opening device  40  installed at an upper portion of the door  30 , and an air blower  100  spraying air-jet when the door  30  is opened. 
     Although not illustrated, dishes are accommodated in the wash tank, such that a wash space of the dishes is formed. The wash tank has a substantially box shape in which an opening is formed in the front thereof so as to accommodate the dishes. Further, the wash tank may be configured to include a sump formed in a lower portion thereof so that wash water is stored therein. 
     The wash tank may be provided with an accommodation part of which an upper portion is opened so that the dishes are accommodated therein, and a dish basket may be installed so as to be movable forward and rearward in upper and lower portion of the wash tank. The dish basket may be drawn out and accommodated through the front surface of the body  20  opened by at least one rack supporting the dish basket so as to be slidably movable. 
     At least one nozzle injecting the wash water to the dishes accommodated in the wash tank is disposed in the body  20 . Further, the automatic door opening device  40  is embedded in an upper portion of the body  20 . In this case, a front end portion of the automatic door opening device  40  may be positioned to be adjacent to the opening so that the automatic door opening device  40  opens the door  30 . 
     The opening of the wash tank may be opened and closed by the door  30 . As an example, the door  30  is hinge-coupled to a lower portion of the front surface of the body  20  to rotate, thereby making it possible to open and close the wash tank. In this case, a handle groove  35  may be formed in an outer portion of the door  30  so that the door  30  may be manually opened. 
     The automatic door opening device  40  may automatically open the door  30  by a preset angle in order to maintain the inside of the wash tank in a dried state by discharging the steam in the body to the outside when the wash process is completed. 
     The air blower  100  includes a blower duct  120  installed in the upper portion of the body  20  and having an outlet  130  spraying air jet so that the steam discharged to the outside flows to the front of the body  20  and a blower fan  110  providing a flow of air to the blower duct  120 . Hereinafter, a structure of the air blower  100  will be described in detail. 
       FIG. 2  is a side view of the dish washer according to the exemplary embodiment of the present disclosure, and  FIG. 3  is a view illustrating an air blower according to a first exemplary embodiment of the present disclosure. Referring to  FIGS. 2 and 3 , the blower duct  120  may be embedded in a space part between the upper portion of the wash tank  60  and the body  20 . The blower fan  110  is installed between the body  20  and the wash tank  60  and positioned to be adjacent to one side surface of the body  20 . 
     As an example, an air brake  50  may be installed on one side surface of the body  20 . A hole (not illustrated) communicating with the wash tank  60  in order to introduce air into the wash tank  60  or discharge the air from the wash tank  60  may be installed in the air brake  50 . 
     The blower fan  110  may be installed above the air brake. A communication hole  25  communicating the outside and the body  20  may be installed in the body  20 , and the communication hole  25  may be positioned between the blower fan  110  and the air brake  50 . The blower fan  110  may be a centrifugal fan for supplying air introduced from the outside to the blower duct  120 . 
     In the case of using the centrifugal fan as the blower fan  110 , the blower fan  110  may suck external air introduced through the communication hole  25  to supply the sucked air to the blower duct  120 . Further, since the blower fan  110  may suck and discharge high-temperature and high-humidity steam in the wash tank  60  together, discharged through the air brake  50 , there is an advantage in that moisture in the air brake  50  may be easily removed. 
     In addition, since a space between the body  20  and the wash tank  60  having a substantially box shape may be minimized, it is possible to improve space use efficiency. Further, a preset flow rate of air may be maintained by effectively supplying the air supplied to the inside of the blower duct  120 . 
     Particularly, in the case in which the blower fan  110  is installed in one side, there is an advantage in that since the blower fan  110  uses the same power source as that of a driving part driving the automatic door opening device  40 , there is no need to provide a separate power supply device. 
     The blower fan  110  is not limited to the centrifugal fan, and it is possible to flow air to the blower duct  120  using an axial flow fan, a cross flow fan, or the like, so as to be positioned in corner portions of the body  20  and the wash tank  60 . 
     The blower duct  120  is positioned at one side of the blower fan, and the air sucked through the blower fan  110  is introduced into the blower duct  120 . The blower duct  120  has the outlet  130  so as to inject the air supplied through the blower fan  110  to the front. The blower duct  120  may be installed at a position substantially parallel with the automatic door opening device  40 . In this case, the outlet  130  may be positioned at both sides based on the automatic door opening device  40 . 
     A rear surface of the blower duct  120  may be positioned to be substantially parallel in a width direction of a door, and the blower fan  110  may be accommodated in one side in the rear of the air duct  120  so as to communicate with the inside of the blower duct  120 . An outlet positioned at one side is referred to as a first outlet  131 , and an outlet positioned at the other side is referred to as a second outlet  132 . 
     Meanwhile, the first outlet  131  may be formed in plural, and the second outlet  132  may also be formed in plural. Each of the outlets  130  may be additionally formed in the width direction of the door so that the steam discharged upwardly by the opening of the door  40  may be sprayed out to the front, and the numbers of blower ducts  120  and outlets  130  are not limited. In addition, the outlet may be disposed to be upwardly inclined so that a direction of the steam may be easily changed in the wash tank by the opening of the door. 
       FIG. 4  illustrates a modified example of the air blower illustrated in  FIG. 3 . Hereinafter, in describing the modified examples, a difference with the air blower  100  described with reference  FIGS. 1 to 3  will be mainly described below, and an omitted description may be replaced with the description described above. 
     Referring to  FIG. 4 , a partition wall  140  may be installed in a blower duct  120 A, and provide a channel so that air introduced into the blower duct  120 A may flow therein. Further, the partition wall  140  may partition the inside of the blower duct  120 A, and in the case in which the partition wall  140  is extended to each of the first outlets  131  and second outlet  132 , the partition wall may partition the first outlets  131  and second outlet  132  into a plural of regions. 
     A front surface  121 A of the blower duct  120 A may have a shape inclined downwardly toward the second outlet  132  so that air flowing from the blower fan  110  may smoothly flow. Further, a side surface  122 A of the blower duct  120 A may have a smooth curved surface toward the second outlet  132 . In addition, the partition wall  140  may have a shape corresponding to the side surface of the blower duct  120  so as to partition the first outlet  131 . The partition wall  140  may be additionally installed so as to partition the second outlet  132 , and each of the partition walls  140  may be changed depending on a shape of the blower duct  120 A. 
       FIG. 5  illustrates another modified example of the air blower illustrated in  FIG. 3 . Referring to  FIG. 5 , a blower duct  120 B may have a rear surface  121 B disposed to be inclined downwardly toward the second outlet  132 . In this case, the blower duct  120 B may have a main channel  150  communicating with the blower fan  110  to be disposed in parallel in the width direction of the door and first and second channels  160  and  170  branched from the main channel  150 , respectively. In this case, the main channel  150  may have a shape inclined downwardly toward the second outlet  132  so as to correspond to the rear surface  121 B of the blower duct  120 B. 
     The first channel  160  communicates with the first outlet  131  and disposed at one side of the automatic door opening device  40 . The second channel  170  communicates with the second outlet  132  and disposed at the other side of the automatic door opening device  40 . In this case, the blower fan  110  is positioned adjacently to the first channel  160 , and cross-sectional areas of the first and second outlets  131  and  132  may be the same as each other. Meanwhile, since the second channel  170  has the shape inclined downwardly toward the second outlet  132 , a cross-sectional area of the first channel  160  may be larger than that of the second channel  170 . 
     A channel guide wall  180  may be formed in each of the channels. The channel guide wall  180  may guide the flow of the air flowing through the blower fan  110 . A first channel guide wall  183  may be installed in the main channel  150  to thereby be positioned in parallel with the rear surface  121 B of the blower duct  120 B. The first channel guide wall  183  may be installed in plural. 
     As an example, a first channel guide wall  183  positioned to be close to the blower fan  110  may have a length longer than that of a first channel guide wall  183  positioned to be distant from the blower fan  110 . The first channel guide wall  183  positioned to be close to the blower fan  110  may have a longer length to guide the air so as to easily flow the air to the second channel  170 , thereby making it possible to uniformly discharge the air sprayed toward the first and second outlets  131  and  132 . 
     A second channel guide wall  185  may be installed in the first channel  160  and positioned to be substantially perpendicular to the first channel guide wall  183 . The second channel guide wall  185  may be installed in plural, and positioned to have different phase differences from each other in the first channel  160  so that the air flowing to the first outlet  131  may smoothly flow. 
     A third channel guide wall  188  may be installed at least one or more spaces of a boundary between the main channel  150  and the second channel  170  and the inside of the second channel  170 , and positioned to be substantially parallel with the second channel guide wall  185 . Similarly to the second channel guide wall  185 , the third channel guide wall  188  may be positioned in the second channel  170  or the boundary between the main channel  150  and the second channel  170  to have a different phase difference so that the air flows to the second channel  170  may smoothly flows to the second outlet  132 . 
       FIG. 6  illustrates still another modified example of the air blower illustrated in  FIG. 3 . Referring to  FIG. 6 , the other side surface  122 C and a rear surface  121 C of a blower duct  120 C positioned in the rear of the second outlet  132  may have an arc shape. In order to guide the flow of the air flowing through the blower fan  110 , a channel guide wall  180 C may be formed in the blower duct  120 C. 
     In the case in which the rear surface  121 C of the blower duct  120 C is substantially parallel with the rear surface of the body  20 , the channel guide wall  180 C may be installed in a first channel  160 C and a boundary between a first main channel  150 C and a second channel  170 C, respectively. 
     In this case, a first channel guide wall  180 CA installed in the first channel  160 C may have a predetermined radius of curvature in the first channel  160  so that the air flowing to the first outlet  131  may smoothly flow. A second channel guide wall  180 CB installed in the boundary between the main channel  150 C and the second channel  170 C may be installed to have a predetermined radius of curvature so as to corresponding to the arc shape of the blower duct  120 C. The second channel guide wall  180 CB may be positioned to be spaced apart from the second outlet  132  in the width direction of the door so that uniform air may be sprayed to the front. 
       FIG. 7  is a view illustrating an air blower according to a second exemplary embodiment of the present disclosure. Referring to  FIG. 7 , first and second blower ducts  200 A and  200 B may be embedded in a space part between an upper portion of a wash tank  60  and a body  20 . The first and second blower ducts  200 A and  200 B may be installed at both sides based on an automatic door opening device  40 . In this case, first and second blower fans  210 A and  210 B are installed between the body  20  and the wash tank  60  and positioned to be adjacent to one side surface and the other side surface of the body  20 , respectively. 
     The first and second blower fans  210 A and  210 B may be centrifugal fans for supplying air introduced from the outside to the first and second blower ducts  200 A and  200 B. The first and second blower ducts  200 A and  200 B may be positioned to one sides of the first and second blower fans  210 A and  210 B, respectively, and airs sucked through the first and second blower fans  210 A and  210 B is introduced into the first and second blower ducts  200 A and  200 B, respectively. 
     The first and second blower ducts  200 A and  200 B have first and second outlets  230 A and  230 B, respectively, so as to inject the air supplied through the first and second blower fans  210 A and  210 B to the front. The first and second blower ducts  200 A and  200 B may be installed at positions approximately parallel with the automatic door opening device  40 . In this case, the first and second outlets  230 A and  230 B may be positioned at both sides based on the automatic door opening device  40 , respectively. 
     The first and second blower fans  210 A and  210 B are positioned at both sides of the automatic door opening device  40 , respectively, such that steam discharged from the inside of the wash tank  60  may be effectively dispersed to the front through strong air flows. 
     In this case, the first and second blower fans  210 A and  210 B may be positioned at one side in the rear of the first and second blower ducts  200 A and  200 B so as to communicate with the insides of the first and second blower ducts  200 A and  200 B, respectively. Rear surfaces of the first and second blower ducts  200 A and  200 B may have a shape with a radius of curvature toward the front so as to minimize air resistance, and a partition wall  240  capable of partitioning the inside may be installed in each of the first and second blower ducts  200 A and  200 B. In the case in which the partition wall  240  is installed toward the first and second outlets  230 A and  230 B, the first and second outlets  230 A and  230 B may be divided into a plurality of outlets  230 A and  230 B, respectively. 
     The first outlet  230 A may be formed in plural, and the second outlet  230 B may also be formed in plural. Each of the first and second outlets  230 A and  230 B may be additionally formed in a width direction of the door so that steam discharged upwardly by the opening of the door  30  may be sprayed to the front, and the numbers of first and second blower ducts  200 A and  200 B and first and second outlets  230 A and  230 B are not limited. 
       FIG. 8  is a view illustrating an air blower according to a third exemplary embodiment of the present disclosure. Referring to  FIG. 8 , a blower duct  300  may be embedded in a space part between an upper portion of a wash tank  60  and a body  20 . The blower duct  300  may be positioned above an automatic door opening device  40 . In this case, a blower fan  310  is installed between the body  20  and the wash tank  60  and positioned to be adjacent to one side surface of the body  20 . 
     The blower fan  310  may be a centrifugal fan for supplying air introduced from the outside to the blower duct  300 . The blower duct  300  is positioned at one side of the blower fan  310 , and the air sucked through the blower fan  310  is introduced into the blower duct  300 . The blower duct  300  has an outlet  330  so as to inject the air supplied through the blower fan  310  to the front. The blower duct  300  may be installed at a position approximately parallel with the automatic door opening device  40 . In this case, the outlet  330  may be positioned at both sides based on the automatic door opening device  40 . 
     A plurality of partition walls  340  may be installed in the blower duct  300 , and provide a plurality of channels so that air introduced into the blower duct  300  may flow therein. Further, the plurality of partition walls  340  may partition the inside of the blower duct  300 , and in the case in which the partition walls  340  is extended to the outlet  330 , the partition walls  340  may partition the outlet  330  into a plural of regions. 
     A rear surface  301  of the blower duct  300  may be positioned so as to be closer to the front in a direction opposite to the blower fan  310  in order to allow air flowing from the blower fan  310  to smoothly flow. Further, a side surface  302  of the blower duct  300  may have a smooth curved surface toward the outlets  330 . In addition, the partition walls  340  may have a shape corresponding to the side surface  302  so as to partition the outlet  330 , and each of the partition walls  340  may be changed depending on a shape of the blower duct  300 . 
       FIG. 9  is a view illustrating a wash process cycle of a dish washer according to the related art. Referring to  FIG. 9 , generally, a wash process (wash and rinse process) of the dish washer is divided into a main process and a preliminary process and repeatedly performed depending on the course, and hot wash water is used in the last rinse process. 
     For example, after pre-wash processes PW1 and PW2, a main wash process Main Wash is performed. Next, after a rinse process Rinse, a hot rinse process HR, and a dry process may be sequentially performed. 
     In the dish washer according to the related art, in order to allow a temperature of the wash water to reach a target temperature when the last rinse process is terminated, after a predetermined time of starting the last rinse process, the wash water is heated by operating a heater. When the rinse process is completed, the drying process is started. According to the related art, the dry process is performed for a long period of time by a method of driving a fan installed in a body to forcedly exhaust wet-steam in a wash tank. 
     As another example of the dry process, evaporation of water stained on dishes at the time of washing and rinsing the dishes is promoted by using hot water at the time of washing and rinsing the dishes and increasing a temperature in the dish washer, or the evaporated water vapor is condensed in a dry (or heat-exchange) duct or removed using an adsorbent. Alternatively, condensation by the dry (or heat-exchange) duct and the adsorbent are simultaneously used. 
     In the dish washer according to the related art described above, there was a problem in that a time consumed for washing dishes was increased due to a long dry time of generally 30 minutes or more, and thus, energy consumed in the dry process was increased. Further, in some methods, dry efficiency was significantly decreased, and a dry state was not good. 
       FIG. 10  is a view illustrating a wash process cycle of the dish washer according to the exemplary embodiment of the present disclosure. Referring to  FIG. 10 , in the dish washer  10 , when a wash process is completed, a dry process is performed. Before a dry process, the wash process and the rinse process may be performed in advance. Next, since a hot rinse process HR is performed in the last rinse step, dry is performed by latent heat for a predetermined time under a high temperature internal atmosphere, and the door  30  is opened by the automatic door opening device by the preset angle. 
     In this case, the blower fan  110  is driven, such that internal air is sprayed through the outlet  130  formed in the blower duct  120 . That is, in the case in which high-temperature and high-humidity wet steam in the wash tank  60  is discharged upwardly through the door  30 , an air curtain is formed by air flowing to the front. Therefore, it is possible to prevent the wet steam from flowing upwardly and block foreign materials (dust, and the like) introduced from the outside from being introduced into the wash tank again in advance. 
     Driving of the blower fan  110  may be controlled by a control device (not illustrated) separately connected thereto. A driving timing of the blower fan  110  is not limited to a time when the door  30  is opened. For example, the blower fan  110  may be immediately driven in the dry process. 
     As another example, the blower fan  110  may be driven before the door  30  is opened by the automatic door opening device  40  after the dry process is started. In this case, since the blower fan  110  may suck and discharge humid air in the wash tank  60  together, discharged through the air brake  50 , there is an advantage in that moisture in the air brake  50  may be easily removed. 
     In addition, unlike the existing dish washer in which the dry time of about 40 minutes is required, wet-steam in the wash tank  60  may be rapidly discharged by implementing the air blower  100 , such that efficiency may be improved by decreasing the dry time within at most 5 minutes or less. 
     That is, the air blower  100  described through the exemplary embodiments of the present disclosure may block wet-steam discharged at the time of opening the door  30  for decreasing the dry time of the dish washer  10  from being discharged upwardly. Particularly, the built-in type dish washer  10  embedded in a separate space to thereby be used may minimize damages to electric home appliances and wooden furniture positioned above the dish washer  10  caused by hot steam. 
     Further, in the case in which the blower fan  110  is provide at one side of the automatic door opening device  40 , since the blower fan  110  may be driven by applying a current through the same power line as that of an actuator (not illustrated), there is no need to configure a separate power control device. In addition, the air blower  100  is provided between the body  20  and the wash tank  60 , such that a change in structure of the dish washer  10  may be minimized. 
     Hereinabove, although various exemplary embodiments of the present disclosure has been individually described, respectively, it is not necessary to implement each of the exemplary embodiments alone, but the configuration and operation in each of the exemplary embodiments may be implemented in combination with at least one of other exemplary embodiment. 
     In addition, hereinabove, although the present disclosure has been described with reference to exemplary embodiments and the accompanying drawings, the present disclosure is not limited thereto, but may be variously modified and altered by those skilled in the art to which the present disclosure pertains without departing from the spirit and scope of the present disclosure claimed in the following claims.