KR20200018835A - Dish Washer - Google Patents

Abstract

The present invention relates to a dish washer. According to the present invention, the dish washer includes: a cabinet forming the appearance; a tub disposed on the inner side of the cabinet and forming a washing chamber in which a dish is treated; a first circulation duct in which air discharged from the washing chamber flows; a second circulation duct sending the air flowing in the first circulation duct to the washing chamber; an outer air inflow duct in which the air flowing inside from the outside of the cabinet flows; a heat exchange duct exchanging heat of the air flowing in the outer air inflow duct with the heat of the air flowing in the first circulation duct and discharging the air to the outside; and a fan assembly disposed on the lower side of the tub and forming the flow of the air. The fan assembly includes: a first fan rotating around a rotation shaft vertically formed and forming one among the air flow from the outer air inflow duct to the heat exchange duct or the air flow from the first circulation duct to the second circulation duct; a second fan disposed on the lower side of the first fan and rotating around the rotation shaft vertically formed, wherein the second fan forms the rest of one among the air flow from the outer air inflow duct to the heat exchange duct or the air flow from the first circulation duct to the second circulation duct; a fan housing forming a first chamber and a second chamber, wherein the first chamber forms a space in which the first fan is disposed and the second chamber forms a space in which the second fan is disposed; and a fan motor disposed on the lower side of the second fan and rotating the first fan and the second fan.

Description

Dish Washer

The present invention relates to a dishwasher, and more particularly, to a dishwasher for driving two fans with one motor.

The dishwasher is a device that can wash dishes using water and detergent in a space where the dishes can be stored, and wash the dishes through a rinsing and drying process. Cleaning and rinsing with water and detergent can remove foreign substances from the dishes. In addition, it is possible to finish the washing of the dish through a drying process to remove the water remaining in the dish.

The drying process of the dishwasher increases the temperature of the water sprayed on the tableware, increases the temperature of the tableware, promotes the evaporation of the water on the tableware, and condenses the evaporated water vapor in a cooling duct located inside or outside the washing tank, Absorption can be done.

When the humid air inside the dishwasher is discharged to the outside, the dishes inside the dishwasher can be dried quickly.However, when the humid air is discharged to the outside of the dishwasher, There is a problem that may occur, such as mold or damage the external configuration.

In addition, basically, the tub's washing chamber occupies most of the space inside the cabinet, and other configurations may be disposed in the space formed between the tub and the cabinet. In this limited space, it is difficult to form a space for an additional configuration, and there is a problem in that it is not easy to arrange the additional configuration.

The problem to be solved by the present invention is to provide a dishwasher capable of efficiently drying the inside of the tub by treating the humid air inside the tub.

Another object of the present invention is to provide a dishwasher in which two fans and a fan assembly for driving the same may be additionally installed to circulate air in the tub and form a flow of air that is heat exchanged with the circulated air.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the dishwasher according to the present invention, the cabinet forming the outer shape; A tub disposed inside the cabinet and forming a washing chamber in which dishes are processed; A first circulation duct through which air discharged from the washing chamber flows; A second circulation duct for sending air flowing through the first circulation duct to the washing chamber; An outside air inlet duct through which air introduced from outside the cabinet flows; A heat exchange duct for exchanging the air flowing through the outside air induction duct with the air flowing through the first circulation duct and discharging it to the outside; And a fan assembly disposed below the tub to form a flow of air, wherein the fan assembly rotates about an upper and lower rotational axis, and the air flows from the first circulation duct to the second circulation duct. A first fan which forms an air flow of any one of a flow or an air flow from the external air inlet duct to the heat exchange duct; It is disposed below the first fan, rotates about a rotation axis formed up and down, the remaining of the air flow from the first circulation duct to the second circulation duct or the air flow from the outside air inlet duct to the heat exchange duct A second fan forming one air flow; A fan housing forming a first chamber forming a space in which the first fan is disposed and a second chamber forming a space in which the second fan is disposed; And a fan motor disposed below the second fan to rotate the first fan and the second fan, and a fan assembly for drying the tub may be compactly disposed in the lower space of the tub.

The fan housing may include a third chamber in which the fan motor is disposed below the second chamber, and drive the first fan and the second fan with one fan motor.

The first chamber is partitioned from the second chamber and disposed above the second chamber, and the third chamber is disposed to communicate with the second chamber below the second chamber.

The first chamber is formed with a first inlet through which air flows upward, and a first outlet through which air is discharged to one side of the circumferential surface is formed, and the second chamber has a second inlet through which air is introduced downward. In addition, a second discharge port through which air is discharged to one side of the peripheral surface is formed.

The first chamber has air flowing through the first circulation duct into the first inlet, and air is discharged through the first outlet into the second circulation duct, and the second chamber is connected to the second inlet. Air introduced from the outside of the cabinet is introduced, and air is discharged into the heat exchange duct through the second outlet.

The fan housing forms a third chamber defining a space in which the fan motor is disposed, and the third chamber is disposed under the second chamber and communicates with the second inlet.

The fan housing includes: an upper cover forming an upper portion of the first chamber; A lower cover forming a lower portion of the second chamber; And a central cover disposed between the upper cover and the lower cover to partition the first chamber and the second chamber.

The fan assembly may include a first circulation duct-connecting portion connecting the first chamber and the first circulation duct; A second circulation duct-connecting portion connecting the first chamber and the second circulation duct; And a heat exchange duct connecting portion connecting the second chamber and the heat exchange duct, wherein the first circulation duct connecting portion, the second circulation duct connecting portion, and the heat exchange duct connecting portion are formed at one side of the lower side of the tub. Are arranged in the direction.

It is disposed inside the second circulation duct, further comprises a circulation heater for heating the flowing air.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the dishwasher of the present invention, there are one or more of the following effects.

First, the dishwasher of the present invention has the advantage of improving the drying performance by circulating or exhausting the air in the tub according to the humidity of the air in the tub.

Second, by using two fan motors to drive two fans, it is possible to flow the internal air of each of the heat exchange duct and the circulation duct, there is an advantage that the power consumption is reduced.

Third, two fans included in the fan assembly and the fan motor are disposed in the vertical direction, and each fan is formed in a compact configuration in which air is sucked in the direction of the upper side or the fan motor is disposed, and the narrow bottom of the tub There is also an advantage that can be deployed in space.

Effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic front cross-sectional view of a dishwasher according to one embodiment of the present invention.
Figure 2 is a schematic block diagram illustrating the flow of air in the dish washer in the drying process according to an embodiment of the present invention.
3 is a view for explaining the heat exchange generated in the air flowing through the tub, the circulation duct and the heat exchange duct according to an embodiment of the present invention.
4 is a view for explaining the configuration and arrangement of the tub, circulation duct, heat exchange duct and fan assembly according to an embodiment of the present invention.
5 is a cross-sectional view of one side of the fan assembly according to an embodiment of the present invention.
6 is an exploded perspective view of a fan assembly according to an embodiment of the present invention.
Figure 7a is a view for explaining the arrangement of the outdoor air inlet duct according to an embodiment of the present invention.
7B is a view for explaining the arrangement of the outdoor air inlet duct according to another embodiment of the present invention.
8 is a cross-sectional side view illustrating an inner side of a fan assembly according to an embodiment of the present invention.
9 is a cross-sectional view of one side of the fan housing to explain the coupling relationship between the fan assembly and the fan housing according to an embodiment of the present invention.
Figure 10a is a view showing the lower side of the lower cover of the fan housing according to an embodiment of the present invention.
10B is a view of one side of the lower cover of the fan housing according to the embodiment of the present invention is cut away.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, and the invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described with reference to the drawings for describing the dishwasher according to embodiments of the present invention.

<Configuration of Dishwasher>

1 is a schematic front cross-sectional view of a dishwasher according to one embodiment of the present invention.

Referring to FIG. 1, the dishwasher 10 according to the present embodiment is coupled to a cabinet 12 and a cabinet 12 forming an outer shape, and a door 16 and a cabinet 12 that open and close the inside of the cabinet 12. It includes a tub 14 installed therein and formed with a washing chamber 14a for processing the dishes placed therein. The cabinet 12 and the tub 14 have a form in which the front surface on which the door 16 is disposed is opened.

The dishwasher 10 according to the present embodiment may include a dispenser (not shown) for storing the detergent introduced by the user and injecting the detergent into the tub 14 in the washing step. The dispenser may be disposed in the door 16.

Cabinet 12 according to the present embodiment forms an outer shape, one side may be open.

The tub 14 according to the present embodiment is disposed inside the cabinet 12. The tub 14 according to the present exemplary embodiment may form a space between the cabinet 12 and the heat exchange duct 80 and the circulation ducts 60 and 70 to be described below. In the upper surface of the tub 14 according to the present embodiment, a circulation duct inlet hole 62a through which air flowing through the washing chamber 14a inside the tub 14 is discharged to the circulation ducts 60 and 70 is formed. At the side of the tub 14 according to the present embodiment, the circulation duct exhaust hole 76 through which air flowing in the circulation ducts 60 and 70 is discharged to the washing chamber 14a inside the tub 14 is formed.

Dishwasher 10 according to the present embodiment is a rack (36, 38) for receiving the dishes in the tub 14, the spray nozzle 30 for spraying the washing water toward the dishes accommodated in the rack (36, 38) 32, 34, a sump 18 for supplying washing water to the injection nozzles 30, 32, and 34, and a washing pump 20 for pumping the washing water stored in the sump 18 into the injection module.

The racks 36 and 38 include an upper rack 36 disposed above the washing chamber 14a and a lower rack 38 disposed below the upper rack 36. The spray nozzles 30, 32, and 34 are disposed on the upper side of the washing chamber 14a and disposed between the top spray nozzle 30, the upper rack 36, and the lower rack 38 for spraying the washing water into the washing chamber 14a. It is disposed below the upper injection nozzle 32 and the lower rack 38 for spraying the washing water to the upper rack 36 or the upper rack 36 and the lower rack 38, spraying the washing water to the lower rack (38) It may further include a lower portion four nozzles (34). Each of the plurality of injection nozzles 30, 32, and 34 may be connected to a plurality of injection nozzle connecting pipes 40, 42, and 44.

In the washing pump 20, the impeller 22 rotating to supply the washing water in the washing pump 20 to the plurality of injection nozzles, the washing motor 24 rotating the impeller 22, and the washing pump 20 inside the washing pump 20. It may include a heater 26 for heating the wash water. The washing water pumped from the washing pump 20 flows through the washing water supply pipe 46, and the switching valve 28 connects at least one of the plurality of injection nozzles 30, 32, and 34 to the washing water supply pipe 46.

The dishwasher 10 according to the present embodiment may include a water supply assembly for supplying washing water into the dishwasher and a drainage assembly for draining the water stored in the dishwasher. The water supply assembly according to the present embodiment includes a water supply pipe 48 for forming a water supply passage through which the washing water is supplied from an external water source, a water supply valve 50 for opening and closing the water supply passage formed in the water supply pipe 48, and a sump through the water supply passage. It may include a flow meter (not shown) for measuring the flow rate of the washing water flowing to 18.

The drainage assembly according to the present embodiment is disposed on the drain pipe 52 formed with a drain flow path for guiding the water stored in the sump 18 to the outside, and is disposed on the drain flow path formed in the drain pipe 52 to wash the water in the sump 18. It may be provided with a drain pump 54 for draining to the outside. The drain pump 54 may include a drain motor (not shown) for generating a rotational force.

Figure 2 is a block diagram illustrating the flow of air in the dish washer in the drying process according to an embodiment of the present invention. 3 is a view for explaining the heat exchange generated in the air flowing through the tub, the circulation duct and the heat exchange duct according to an embodiment of the present invention. 4 is a view for explaining the configuration and arrangement of the tub, circulation duct, heat exchange duct and fan assembly according to an embodiment of the present invention. Figure 5a is a view for explaining the arrangement of the air inlet duct according to an embodiment of the present invention. 5B is a view for explaining an arrangement of an outside air induction duct according to another embodiment of the present invention.

The dishwasher 10 according to the present exemplary embodiment includes air circulating ducts 60 and 70 that form a space in which the air inside the washing chamber 14a flows out of the tub 14 and circulates outside the cabinet 12. It includes a heat exchange duct (80) that flows in and heat exchanges with the circulation ducts (60, 70) and a fan assembly (100) forming a flow of air of the circulation ducts (60, 70) and the heat exchange duct (80).

The circulation ducts 60 and 70 are the first circulation duct 60 for heat-exchanging the air discharged from the tub 14 with the heat exchange duct 80 and the washing chamber 14a inside the tub 14 by heating the heat-exchanged air. It includes a second circulation duct 70 for supplying).

The first circulation duct 60 is disposed between the heat exchange duct 80 and the cabinet 12. The first circulation duct 60 according to the present exemplary embodiment may be disposed to be in interview with the heat exchange duct 80 to exchange heat with air introduced from the outside flowing the heat exchange duct 80. In addition, the first circulation duct 60 may be disposed to be in contact with the cabinet 12 to exchange heat with air flowing outside the cabinet 12.

The first circulation duct 60 is disposed between the side surface of the tub 14 and the cabinet 12 to exchange heat between the heat exchange-circulation duct 64 and the air discharged from the tub 14 to exchange heat with the heat exchange duct 80. It may comprise a connecting duct 62 to the circulation duct (64).

The connection duct 62 connects the circulation duct inlet hole 62a formed on the tub 14 and the heat exchange-circulation duct 64. A plurality of flow path guides 66 may be formed inside the heat exchange-circulation duct 64 to guide the flow of air. The flow guide 66 adjusts the speed of the air flowing in the heat exchange-circulation duct 64 or allows the effective length of heat exchange to be made at a long distance.

The heat exchange-circulation duct 64 may include a plurality of condensate guides 68 for guiding condensate generated by the heat exchange to the circulation duct exhaust hole 76. The plurality of condensation guides 68 may be disposed on one inner side and the other side of the heat exchange-circulation duct 64, respectively.

The second circulation duct 70 flows the first circulation duct 60 to supply heat-exchanged air into the tub 14. The circulation unit heater 78 may be disposed in the second circulation duct 70. Therefore, the air flowing through the second circulation duct 70 may be heated by the circulation heater 78 and supplied into the tub 14.

At the end of the second circulation duct 70, a circulation duct exhaust hole 76 communicating with the washing chamber 14a in the tub 14 is formed. An upper flow path is formed upstream of the circulation ducts 60 and 70, and a lower flow path is formed downstream of the air flowing upward, and a downstream flow path is formed downstream of the lower flow path. 76) is formed. The circulation heater 78 may be disposed upstream of the upper flow passage. That is, the circulation heater 78 is disposed below the upper flow passage.

Therefore, the washing water scattered from the washing chamber 14a in the tub 14 to the second circulation duct 70 may be prevented from flowing into the circulation heater 78.

The heat exchange duct 80 may be disposed between the side surface of the tub 14 and the first circulation duct 60. Therefore, the air introduced from the outside flowing the heat exchange duct 80 may exchange heat with the first circulation duct 60. In addition, the air flowing through the heat exchange duct 80 may exchange heat with the air flowing through the washing chamber 14a in the tub 14. Therefore, the hot and humid air flowing through the washing chamber 14a of the tub 14 and the hot and humid air flowing through the first circulation duct 60 are used to exchange condensed water by heat exchange with external air flowing through the heat exchange duct 80. Can be generated.

A separate flow guide (not shown) may also be formed inside the heat exchange duct 80.

The dishwasher 10 according to the present exemplary embodiment may include an exhaust duct 86 for discharging air heat-exchanged with the first circulation duct 60 in the heat exchange duct 80 to the outside of the cabinet 12. The exhaust duct 86 is disposed above the tub 14, and can exhaust air to the front of the cabinet 12.

The air introduced into the cabinet 12 from the outside may flow to the heat exchange duct 80 through the outside air inlet ducts 140a and 140b. The outdoor air inlet ducts 140a and 140b according to the present embodiment may be connected to the third chamber 124 which will be described below. Therefore, the outside air introduced into the outside air inlet ducts 140a and 140b flows to the second chamber 122 through the third chamber 124 and flows to the heat exchange duct 80 by the rotation of the second fan (). Can be.

Referring to FIG. 4A, the outside air inlet duct 140a may be formed at one side of a circumferential surface on which the fan motor 134 of the fan assembly 100 is disposed. In this case, the outside air may flow into the rear of the cabinet 12. Referring to FIG. 4B, the outside air inlet duct 140b may be disposed below the fan assembly 100. In this case, the outside air may be introduced into the cabinet 12 through the lower side of the cabinet 12. In addition, it is possible to form an inlet in the lower front of the cabinet 12, or to form an inlet in the space between the tub 14 and the cabinet 12.

The fan assembly 100 may send air flowing through the first circulation duct 60 to the second circulation duct 70, and send air introduced into the cabinet 12 from the outside to the heat exchange duct 80.

In the fan assembly 100 according to the present embodiment, the first chamber 120 and the air inflow ducts 140a and 140b communicating with the first circulation duct 60 and the second circulation duct 70 are heat exchange ducts 80. The second chamber 122 is formed to communicate (). The first chamber 120 is disposed with a first fan 130 for flowing air from the first circulation duct 60 to the second circulation duct 70, the outside air inlet duct 140a, A second fan 132 may be disposed to flow the air of 140b to the heat exchange duct 80. In addition, the fan assembly 100 may include a fan motor 134 for simultaneously rotating the first fan 130 and the second fan 132. The fan motor 134 is disposed at one side of the first fan 130 or the second fan 132 to simultaneously rotate the first fan 130 and the second fan 132. The fan assembly 100 according to the present embodiment is disposed below the tub 14. The fan assembly 100 according to the present exemplary embodiment has a structure in which two fans 130 and 132 are driven by one fan motor 134. The detailed configuration of the fan assembly 100 will be described below.

6 is a cross-sectional side view illustrating the inside of the fan assembly according to an embodiment of the present invention. 7 is an exploded perspective view of the fan assembly according to an embodiment of the present invention. 8 is a side cross-sectional view for describing the inside of the fan assembly according to an embodiment of the present invention. 9 is a view for explaining the coupling relationship between the fan motor and the fan housing according to an embodiment of the present invention. Figure 10a is a view showing the lower side of the lower cover of the fan housing according to an embodiment of the present invention. 10B is a view of one side of the lower cover of the fan housing according to the embodiment of the present invention is cut away.

Hereinafter, the fan assembly according to the present embodiment will be described with reference to FIGS. 6 to 10.

The fan assembly 100 according to the present exemplary embodiment includes a first chamber 120 and external air flowing into the first circulation duct 60 and the second circulation duct 70 and communicating with the heat exchange duct 80. The first fan (110) forming the second chamber 122, the first fan 120 is disposed in the interior, and flows the air in the first circulation duct 60 to the second circulation duct 70 ( 130, the second fan 132 and the first fan 130 or the second disposed in the second chamber 122 to flow the air introduced into the cabinet 12 from the outside into the heat exchange duct 80 It is disposed on one side of the fan 132, and includes a fan motor 134 for rotating the first fan 130 and the second fan 132.

The first chamber 120 and the second chamber 122 disposed inside the fan housing 110 may be disposed up and down. The first chamber 120 according to the present embodiment is disposed above the second chamber 122. In the fan housing 110 according to the present exemplary embodiment, a third chamber 124 in which the fan motor 134 is disposed below the second chamber 122 may be formed.

A first inlet 120a communicating with the first circulation duct 60 is formed on the upper side of the first chamber 120, and communicating with the second circulation duct 70 on one side of the circumferential surface of the first chamber 120. The first outlet 120b is formed.

A second inlet 122a through which air introduced from the outside of the cabinet 12 is introduced is formed below the second chamber 122, and one side of the circumferential surface of the second chamber 122 communicates with the heat exchange duct 80. The second discharge port 122b is formed. The second inlet 122a according to the present embodiment communicates the second chamber 122 with the third chamber 124. The third chamber 124 may be connected to the external air inlet ducts 140a and 140b.

The third chamber 124 may be formed with a third inlet 124a through which external air flows into one of the lower and circumferential surfaces. The third inlet 124a may be set in consideration of the arrangement of the outdoor air inlet duct. Therefore, as shown in FIG. 7A, when the outside air inlet duct 140a is disposed behind the third chamber 124, the third inlet 124a may be formed at one side of the circumferential surface of the third chamber 124. In addition, when the outside air inlet duct 140b is disposed below the third chamber 124 as shown in FIG. 7B, the third inlet 124a may be formed below the third chamber 124.

The first chamber 120 and the second chamber 122 are disposed up and down with the center cover 116 interposed therebetween, and the inner space does not communicate. The second chamber 122 and the third chamber 124 are disposed vertically and in communication with each other. A chamber partition plate 114a having a second inlet 122a is disposed between the second chamber 122 and the third chamber 124. When the fan motor 134 is operated, air inside the third chamber 124 flows to the second chamber 122 by the rotation of the second fan 132.

The fan housing 110 includes an upper cover 112 forming an upper portion of the first chamber 120, a lower cover 114 forming an lower portion of the second chamber 122, an upper cover 112, and a lower cover ( The central cover 116 is disposed between the first chamber 120 and the second chamber 122.

The first chamber 120 is formed by the combination of the upper cover 112 and the center cover 116. Combination of the upper cover 112 and the central cover 116 may form an exhaust chamber 126 that sends the air discharged from the first chamber 120 to the second circulation duct (70). The upper cover 112 may further include a fastening part 112c fastened or fixed to the center cover 116 and the lower cover 114. The fastening part 112c may extend long downward from the second circulation duct-connection part 112b to be described below.

The exhaust chamber 126 according to the present embodiment is disposed in front of the first chamber 120. The first chamber 120 and the exhaust chamber 126 may communicate with each other through the first outlet 120b. The exhaust chamber 126 may be formed in the direction in which the first outlet 120b is formed in the first chamber 120. The second chamber 122 is formed by combining the central cover 116 and the lower cover 114.

The lower cover 114 includes a fan motor fixing part 114b for fixing the fan motor 134 spaced apart from the chamber compartment plate 114a at a predetermined interval. The fan motor fixing part 114b is disposed around the second inlet 122a and protrudes downward from the lower surface of the chamber partitioning plate 114a. The fan motor fixing part 114b may have a hook shape protruding downward of the chamber partition plate 114a. The fan motor fixing part 114b may be fastened to the fastening member 136 of the fan motor 134 to be described below to fix the fan motor 134. A plurality of fan motor fixing parts 114b according to the present embodiment may be formed along the circumference of the second inlet 122a. The plurality of fan motor fixing parts 114b may be spaced apart from each other along the circumference of the second inlet 122a.

The fan assembly 100 connects the first circulation duct-connecting portion 112a that connects the first chamber 120 and the first circulation duct 60 to the first chamber 120 and the second circulation duct 70. The second circulation duct connecting portion 112b and the second chamber 122 may further include a heat exchange duct connecting portion 118 connecting the heat exchange duct 80. The first circulation duct connecting portion 112a and the second circulation duct connecting portion 112b may be integrally formed with the upper cover 112. The first circulation duct-connector 112a, the second circulation duct-connector 112b, and the heat exchange duct-connector 118 according to the present exemplary embodiment may be disposed in the front-rear direction at one lower side of the tub.

The heat exchange duct-connecting portion 118 extends in the left direction of the lower cover 114 and the center cover 116 forming the circumference of the second chamber 122, and extends upward to be connected to the heat exchange duct 80. The heat exchange duct connection 118 according to the present embodiment is disposed behind the first circulation duct connection 112a and the second circulation duct connection 112b.

The second circulation duct connecting portion 112b extends in the forward direction of the upper cover 112 and the center cover 116 forming the circumference of the first chamber 120 and extends upward in the left direction to form the second circulation duct. Connected with 70. The second circulation duct connecting portion 112b is connected to the first chamber 120 through the exhaust chamber 126. The second circulation duct-connecting portion 112b connects the exhaust chamber 126 and the second circulation duct 70.

The first circulation duct-connecting portion 112a forms a space communicating with the inlet to the upper side of the first chamber 120 and extends to be disposed between the second circulation duct-connecting portion 112b and the heat exchange duct-connecting portion 118. .

The second circulation duct connecting portion 112b, the first circulation duct connecting portion 112a, and the heat exchange duct connecting portion 118 may be sequentially disposed from the front side under the tub 14. The first fan 130 and the second fan 132 rotate about a rotation shaft formed up and down. The rotating shaft for rotating the first fan 130 and the rotating shaft for rotating the second fan 132 may be formed on the same line.

The first fan 130 and the second fan 132 according to the present embodiment may use a centrifugal fan that introduces air from one surface parallel to the rotating shaft and discharges the air in a circumferential direction perpendicular to the rotating shaft.

The first fan 130 according to the present embodiment circulates the air in the tub 14 to the outside of the tub 14. The second fan 132 according to the present embodiment heat-exchanges the air introduced from the outside of the cabinet 12 with the air circulated to the outside of the tub 14 to discharge the outside of the cabinet 12.

The fan assembly 100 according to the present embodiment connects the first rotation shaft 137 connecting the first fan 130 and the second fan 132 to the second fan 132 and the fan motor 134. It may include a second rotary shaft 138. The first rotary shaft 137 and the second rotary shaft 138 may be formed as one. The first rotation shaft 137 may connect the first fan 130 and the second fan 132 through the central cover 116.

The fan motor 134 according to the present embodiment is disposed in the third chamber 124. The fan motor 134 according to the present embodiment simultaneously rotates the first fan 130 and the second fan 132. The fan motor 134 is spaced apart from the second inlet 122a by a predetermined interval downward.

The fan motor 134 includes a fastening member 136 fastened with the fan motor fixing part 114b to fix the position of the fan motor 134. The fastening member 136 according to the present exemplary embodiment protrudes radially outward along an upper circumferential surface of the fan motor 134. A plurality of fastening members 136 according to the present embodiment may be formed. The plurality of fastening members 136 are installed at positions corresponding to the plurality of fan motor fixing parts 114b.

Although the above has been illustrated and described with respect to the preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, but in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

10 dishwasher 12 cabinet
14: Tub 14a: Washing Room
18: sump 20: washing pump
60: first circulation duct 62: connection duct
62a: circulation duct inlet hole 64: heat exchange-circulation duct
70: second circulation duct 76: circulation duct exhaust hole
78: circulation heater 80: heat exchange duct
86: exhaust duct 100: fan assembly
110: fan housing 112: top cover
112a: first circulation duct-connection 112b: second circulation duct-connection
114: lower cover 114a: chamber compartment plate
114b: fan motor fixing part 118: heat exchange duct-connection
120: first chamber 122: second chamber
124: third chamber 130: the first fan
132: second fan 134: fan motor
136: fastening member

Claims (9)

A cabinet forming an appearance;
A tub disposed inside the cabinet and forming a washing chamber in which dishes are processed;
A first circulation duct through which air discharged from the washing chamber flows;
A second circulation duct for sending air flowing through the first circulation duct to the washing chamber;
An outside air inlet duct through which air introduced from outside the cabinet flows;
A heat exchange duct for exchanging air flowing through the outside air induction duct with air flowing through the first circulation duct and discharging it to the outside;
A fan assembly disposed below the tub and forming a flow of air;
The fan assembly,
The first chamber and the second chamber are disposed up and down therein, the first inlet opening to the upper side of the first chamber, the first outlet opening to one side of the circumferential surface of the first chamber, the lower side of the second chamber A fan housing configured to form a second inlet opening to the second outlet, and a second outlet opening to one side of a circumferential surface of the second chamber;
An air flow of any one of the air flow from the first circulation duct to the second circulation duct or the air flow from the external air inlet duct to the heat exchange duct is rotated about the rotation axis formed up and down inside the first chamber A first fan forming a;
Rotates around a rotation axis formed up and down inside the second chamber, and the other one of the air flow from the first circulation duct to the second circulation duct or the air flow from the outside air inlet duct to the heat exchange duct A second fan forming a;
And a fan motor disposed under the second chamber to transmit rotational force to the first fan and the second fan. The method of claim 1,
And a third chamber in the fan housing in which the fan motor is disposed below the second chamber. The method of claim 2,
The first chamber is partitioned from the second chamber and disposed above the second chamber,
And the third chamber is disposed to communicate with the second chamber at a lower side of the second chamber. The method of claim 1,
The first chamber is formed with a first inlet through which air flows upward, and a first outlet through which air is discharged to one side of a circumferential surface.
The second chamber is a dish washer is formed with a second inlet through which air is introduced into the lower side, the second outlet for air is discharged to one side of the peripheral surface is formed. The method of claim 4, wherein
In the first chamber, air flowing through the first circulation duct flows into the first inlet, and air is discharged through the first discharge port into the second circulation duct.
The second chamber is a dishwasher in which the air introduced from the outside of the cabinet is introduced into the second inlet, the air is discharged through the heat exchange duct through the second outlet. The method of claim 4, wherein
The fan housing forms a third chamber forming a space in which the fan motor is disposed,
And the third chamber is disposed below the second chamber and communicates with the second inlet. The method of claim 1,
The fan housing,
An upper cover forming an upper portion of the first chamber;
A lower cover forming a lower portion of the second chamber; And
And a central cover disposed between the upper cover and the lower cover to partition the first chamber and the second chamber. The method of claim 1,
The fan assembly,
A first circulation duct-connecting portion connecting the first chamber and the first circulation duct;
A second circulation duct-connecting portion connecting the first chamber and the second circulation duct; And
A heat exchange duct-connecting portion connecting the second chamber and the heat exchange duct;
And the first circulation duct-connector, the second circulation duct-connector, and the heat exchange duct-connector are disposed in the front-rear direction on one lower side of the tub. The method of claim 1,
And a circulation heater disposed in the second circulation duct to heat the flowing air.

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