JP2005021598A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To wash the outside of a plurality of glasses held in an upper stage basket, well in a dishwasher. <P>SOLUTION: An upper nozzle body 26 is disposed at a top face of a washing chamber 2 above a glass holding part 53 of the upper stage basket 5b. When a washing drainage pump 12 is operated, water is fed to the upper nozzle body 26. Water coming out of a first nozzle 30 flows forward by the action of a first deflector 32 and is laterally diffused by the action of a first projecting wall 33 and a first hanging wall 34 and sprinkled well on the outside of the glasses in the second row of the glass holding part 53 to wash these glasses well. Water coming out of a second nozzle 31 flows to the rear side by the action of a second deflector 35 and is laterally diffused by the action of a second projecting wall 36 and a second hanging wall 37 and sprinkled well on the outside of the glasses in the third row of the glass holding part 53 to wash these glasses well. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dishwasher.

2. Description of the Related Art Conventionally, in a dishwasher, there is a dishwasher in which a tableware basket for storing tableware is composed of an upper basket and a lower basket, and the upper basket mainly contains a cup or a cup of water. The cup is accommodated in the upper basket with its opening facing downward. A nozzle body (such as a rotating nozzle arm) that injects water upwards is provided at the bottom of the washing cabinet. The nozzle is ejected from this nozzle and serves as a dish for dishes such as dishes and rice bowls contained in the lower basket. The water that has passed through goes to the cup. Some of this water enters the cup to wash the inside of the cup, and the other hits the top of the washing cabinet and bounces to wash the outside of the cup. For cups where it is difficult for water to reach from the bottom nozzle, water is sprayed from the auxiliary nozzle body (fixed nozzle arm) provided at a position lower than the upper basket on the side wall of the washing cabinet toward the inside of the cup. (For example, refer to Patent Document 1).
JP 2002-336170 A

  In such a dishwasher, when the distance between the dishes stored in the lower basket is very narrow, the water from the nozzle body at the bottom does not sufficiently reach the top surface, and the outside of the cup may not be washed. is there. In particular, such a case is likely to occur when a cup storage portion is provided immediately above a bowl storage portion for storing rice bowls and the like provided in the lower basket. For this reason, it is conceivable that a nozzle body is also provided in the upper part of the washing cabinet so that the outside of the cup can be washed. However, since a plurality of cups are arranged in the cup housing portion, water is spread over a wide range. There is a need.

  An object of this invention is to provide the dishwasher which can wash | clean well the outer side of the cup accommodated in the upper stage basket.

The dishwasher of the present invention is provided in a washing cabinet for storing and washing dishes, an upper basket accommodated in an upper portion of the washing cabinet, and at least a part of the upper basket, and is provided in the front-rear direction and the left-right direction. A cup accommodating portion that can accommodate a plurality of cups, an upper nozzle body that is disposed above the cup accommodating portion in the washing cabinet and that injects water toward the cup accommodated in the cup accommodating portion, and the upper portion A water supply device that sends water to the nozzle body,
The upper nozzle body has a first ejection part that ejects water so as to diffuse downward in a lateral direction with respect to one direction of the front, rear, left, and right directions, and on a side opposite to the one direction. It has the 2nd ejection part which spouts water so that it may be spread | diffused in the horizontal direction with respect to this downward direction and this downward direction.

  The above dishwasher further includes a drainage device for draining water used for washing, so that water is sent from the water supply device to the upper nozzle body and drained from the upper nozzle body even during drainage by the drainage device. It is preferable to configure.

  In this structure, the water sprayed from the 1st ejection part is applied, for example to several cups located in a line with the front side of the cup accommodating part, and the outer side of these cups is washed. Moreover, the water sprayed from the 2nd ejection part is applied, for example to several cups located in a line with the back side of the cup accommodating part, and the outer side of these cups is washed. In this way, the plurality of cups stored in the cup storage portion are well watered, and these cups are washed well. Accordingly, the cleaning performance can be improved.

  Further, the inner wall and the basket of the washing cabinet can be washed with water discharged from the upper nozzle body during drainage. Thereby, when a foaming detergent is used, even if foam remains on the inner wall or basket of the washing cabinet, it can be washed away, and the rinsing performance is improved. In addition, residual bonds attached to the inner wall of the washing cabinet and the basket can be washed away, improving the washing performance.

  Hereinafter, a dishwasher according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a dishwasher according to the present embodiment, FIG. 2 is a side sectional view, FIG. 3 is a front view of a main part with an upper door and a lower door removed, and FIG. 4 is a plan view of an operation panel. This dishwasher is a dishwasher having a thin structure with a small depth so that it can be installed in a narrow space on the side of a kitchen sink, for example.

  A cleaning cabinet 2 also serving as a drying chamber is disposed inside the housing 1, and an upper door 3 and a lower door 4 are attached to the front opening of the cleaning cabinet 2 so as to open in the vertical direction. A handle 17 is provided at the center of the upper end of the lower door 4, and when the user opens the lower door 4 with the handle 17, the upper door 3 opens in conjunction with this.

  With the upper and lower doors 3 and 4 opened, the tableware basket 5 is put in and out of the washing cabinet 2. The tableware basket 5 includes a lower basket 5a housed in the lower part of the washing cabinet 2 and an upper basket 5b housed in the upper part. In the lower basket 5a, on the right side when viewed from the front, there is provided a platter storage section 50 for storing an intermediate plate or a platter in an upright state, and stores the rice bowl or bowl from the center to the left side. A bag storage 51 is provided. In the upper basket 5b, a small bowl accommodating portion 52 for accommodating small bowls is provided on the right side when viewed from the front, and a cup accommodating portion 53 for accommodating cups and drinking water is provided on the left side. A total of four small bowls are accommodated in the small bowl accommodating part 52 with two openings in the front and rear, two on the left and right, with their openings down. The cup container 53 accommodates a total of twelve cups, three in the front and rear (three rows) and four in the left and right, with their openings facing down. The cup storage part 53 is located right above the bag storage part 51, and the bottom part is made low. On the other hand, the small bowl accommodating part 52 is located right above the platter accommodating part 50, and the bottom is made high in order to avoid the platter. Although not shown, the lower basket 5a and the upper basket 5b are accommodated in a state where the small dishes are stood in an appropriate position other than the platter accommodating part 50, the bowl accommodating part 51, the small bowl accommodating part 52, and the cup accommodating part 53. A small dish container is provided.

  A pair of rails 22 are provided on the inner surface of the washing cabinet 2 to hold the upper basket 5b in and out. The pair of rails 22 are provided at two locations, upper and lower, so that the height of the upper basket 5b can be changed in two stages. For example, when a particularly large platter is accommodated in the platter accommodating portion 50, the upper basket 5b is disposed at the upper position.

  A rotatable nozzle arm 7 having a plurality of water injection ports 6 formed on the upper surface is provided at the bottom of the cleaning cabinet 2. In this dishwasher, since the width of the washing cabinet 2 is larger than the depth, water does not reach the both sides of the washing cabinet 2 with only one nozzle arm. Therefore, another nozzle arm (not shown) is provided in a position where it does not interfere with the nozzle arm 7 shown during rotation.

  A water storage tank 8 is formed at the bottom of the washing cabinet 2, and a leftover filter 11 for collecting the leftovers that have flowed down from the dishes is detachably provided on the upper surface thereof. A water supply port (not shown) having a water supply valve (not shown) is disposed on the side of the cleaning cabinet 2, and when this water supply valve is opened, water supplied from an external water tap or the like passes through the water supply port and the cleaning cabinet 2. It is poured in and stored in the bottom of the washing cabinet 2 including the water storage tank 8. The water level stored in the washing cabinet 2 is detected by a water level sensor 19. The water level sensor 19 includes an air trap 191 that communicates with the water storage unit 8, a pressure sensor 192 that is disposed at the lower back of the cleaning cabinet 2, and an air hose 193 that connects the air trap 191 and the pressure sensor 192. The pressure of the air in the air trap 191 changes according to the change in the water level in the cleaning chamber 2. By detecting this with the pressure sensor 192, it is possible to detect a specified water level for performing easy washing and an abnormal water level when an excessive amount of water is stored. In addition, a loop-shaped heater 16 for heating the water stored in the cleaning cabinet 2 and heating the air in the cleaning cabinet 2 at the time of drying is disposed at the bottom of the cleaning cabinet 2 (a position lower than the specified water level). It is installed.

  A washing and draining pump 12 (corresponding to the water feeding device and draining device of the present invention) is disposed below the bottom wall surface of the washing cabinet 2. The washing and draining pump 12 has a washing pump room and a draining pump room partitioned by a partition, and a washing impeller attached coaxially to the pump motor is provided in the washing pump room and the draining pump room. And a drain impeller. The suction port 13 of the cleaning pump chamber is connected to a circulation port 9 provided in the rear wall of the water storage tank 8, and the discharge port 14 is connected to the nozzle arm 7 through a water passage 15 extending in the lateral direction. It communicates with the water channel of another nozzle arm (not shown). On the other hand, although not shown, the suction port of the drainage pump chamber is connected to the drainage port 10 provided on the side wall of the water storage tank 8, and the discharge port of the drainage pump chamber communicates with the outside through the drainage hose. .

  The water passage 15 further extends to the vicinity of the rear surface of the cleaning chamber 2, and is connected to a fixed nozzle arm 23 disposed on the rear surface of the cleaning chamber 2 at this position. The fixed nozzle arm 23 extends upward from the connection portion with the water passage 5 and then branches into two arms. That is, the first arm 24 extending substantially horizontally along the bottom surface of the cup housing portion 53 at a position slightly lower than the cup housing portion 53 of the upper basket 5b, and extends slightly above the branching position of the first arm 24. Later, it is bent to the right, and is divided into a second arm 25 extending substantially horizontally along the bottom surface of the small bowl container 52 at a position slightly lower than the small bowl container 52 of the upper basket 5b. The first arm 24 is provided with injection ports 241 for injecting water toward the last row (third row) of cups 53, as many as the number of cups in the last row, that is, at four locations. Yes. In addition, the second arm 25 is provided with three injection ports 251 for injecting water toward the small bowl of the small bowl accommodating portion 52, and an impeller type for injecting water toward the large plate of the large dish accommodating portion 50. Nozzles 252 are provided at two locations. The configuration of the impeller type nozzle is the same as the configuration of the auxiliary nozzle described in Japanese Patent Application No. 2002-284721 previously filed by the present applicant, and detailed description thereof is omitted here.

  Thus, when the pump motor of the cleaning / drainage pump 12 is rotationally driven in the normal rotation direction with water stored in the bottom of the cleaning cabinet 2, the cleaning / drainage pump 12 functions as a cleaning pump. That is, by the action of the rotating cleaning impeller, water sucked from the water storage tank 8 through the circulation port 9 is pumped to the nozzle arm 7 and the fixed nozzle arm 23 through the water channel 15. The water sent to the nozzle arm 6 spouts out of the water injection port 6 provided on the upper surface of the nozzle arm 7, and the nozzle arm 7 rotates in a predetermined direction around a substantially vertical axis by the water force. The water jetted from the water jet 6 hits the tableware (large plate, rice bowl, cup) in the washing cabinet 2, and removes dirt adhering to the tableware or flushes with detergent water. Further, the water sent to the fixed nozzle arm 23 is ejected from the ejection port 241 of the first arm 24, enters the last row of cups of the cup storage portion 53, and cleans the inside of the cup. Further, the water sent to the fixed nozzle arm 23 is jetted from the jet port 251 of the second arm 25, enters the inside of the small bowl of the small bowl accommodating part 52 and washes the inside of the small bowl, and from the impeller type nozzle 252. The platter is washed by being sprayed and hitting the upper part of the platter of the platter container 50 where the water from the nozzle arm 7 is difficult to reach. Next, when the pump motor is driven to rotate in the reverse direction, the washing and draining pump 12 functions as a draining pump. That is, by the action of the rotating drain impeller, the water sucked from the water storage tank 8 through the drain port 10 is discharged out of the machine through the drain hose.

  An operation panel 18 is disposed below the lower door 4. As shown in FIG. 4, the operation panel 18 includes a power switch 181, a start key 182, a dedicated detergent course selection key 183, a drying key 184, and a kitchen detergent course selection key 185 as operation units. . The dedicated detergent course selection key 183 is a key for selecting a desired washing course from a plurality of washing courses for washing dishes using the dedicated detergent. The kitchen detergent course selection key 185 is a key for selecting a desired washing course from a plurality of washing courses for washing dishes using the kitchen detergent. The drying key 184 is a key operated when only the tableware is dried. On the operation panel 18, as a display unit, a dedicated detergent course display unit 186 that displays the cleaning course selected by the dedicated detergent course selection key 183 and a cleaning course selected by the kitchen detergent course selection key 185 are displayed. A detergent course display unit 187 and a drying display unit 188 for displaying the drying time selected by the drying key 184 are arranged.

  In this operation panel 18, a dedicated detergent course selection key 183 and a kitchen detergent course selection key 185 are arranged on both sides of the start key 182 so that the start key 182 is selected after selecting the dedicated detergent course. The series of operating directions to be pressed and the series of operating directions to press the start key 182 after selecting the kitchen detergent course are opposite to each other. This makes it less likely for users to accidentally run a dedicated detergent course with kitchen detergent or to run a kitchen detergent course with a dedicated detergent. Various problems such as abnormal foaming and deterioration of cleaning performance can be prevented.

  Now, on the top surface of the washing cabinet 2 above the cup container 53 of the upper basket 5b (directly above the central part of the cup container 53), water is poured toward the cup and the cup of water stored in the cup container 53. An upper nozzle body 26 for spraying is disposed. The upper nozzle body 26 is connected to the cleaning pump chamber of the cleaning / drainage pump 12 via the water supply pipe 21. The upper nozzle body 26 has a structure for diffusing water over a wide range so that water is poured mainly on the cups arranged in the second row and the third row (last row) of the cup housing portion 53. A detailed structure will be described. FIG. 5 is a longitudinal sectional view of the main part showing the structure of the upper nozzle body 26. 6 is a view of the upper nozzle body 26 as viewed from the rear, and FIG. 7 is a view of the upper nozzle body 26 as viewed from below.

  The upper nozzle body 26 includes a connection port portion 27 to which the water supply pipe 21 is connected, a flange portion 28 that is formed below the connection port portion 27 and abuts on the outer surface of the top surface of the cleaning cabinet 2, and a lower portion of the flange portion 28. And a nozzle portion 29 that faces the cleaning chamber 2. A first injection port 30 is formed at the front side of the tip of the nozzle portion 29, and a second injection port 31 is formed at the rear side.

  A first deflecting body 32 is formed below the first injection port 30 to direct the water going downward from the first injection port 30 forward. The first deflecting body 32 has a substantially horizontal (slightly downwardly inclined) upper surface 321 facing the first injection port 30 and a rear surface 322 connected from the upper surface 321 to the first injection port 30. Water exiting from the first injection port 30 hits the upper surface 321 and is guided forward along the upper surface 321. A front end portion of the upper surface 321 of the first deflector 32 protrudes upward, stops water flowing forward along the upper surface 321 of the first deflector 32, and separates the water in the left-right direction (lateral direction). One protruding wall 33 is formed. Furthermore, a first drooping wall 34 that hangs down from the front side of the flange portion 28 and covers the front side of the nozzle portion 29 and the first deflecting body 32 is provided. The first hanging wall 34 stops and directs it in the left-right direction.

  A second deflecting body 35 is formed below the second injection port 31 so as to direct water going downward from the second injection port 31 to the rear. The second deflector 35 has a rearwardly inclined surface 351 that faces the second injection port 31, and water that has come out of the second injection port 31 hits the inclined surface 351, along the inclined surface 351. It is led to the rear and diagonally downward. A second protruding wall that protrudes upward at the front portion of the inclined surface 351 of the second deflector 35 and blocks water that moves backward along the upper surface of the second deflector 35 and separates the water in the left-right direction. 36 is formed. Further, a second hanging wall 37 is formed at the rear edge of the second injection port 31 to block water passing above the first projecting wall 36 and divide the water in the left-right direction.

  Thus, when the cleaning / drainage pump 12 operates as a cleaning pump, water is sent to the upper nozzle body 26 through the water supply pipe 21. The water exiting from the first injection port 30 through the nozzle portion 29 exits to the front side by the action of the first deflecting body 32 and diffuses to the left and right by the action of the first projecting wall 33 and the first hanging wall 34. It pours into a position near the front side of the nozzle body 26 and just below the upper nozzle body 26. At this position, the cups in the second row of the cup storage portion 53 are arranged side by side, and water is well applied to the outside of these cups, and these cups are washed well. On the other hand, the water discharged from the second injection port 31 exits to the rear side by the action of the second deflecting body 35, diffuses to the left and right by the action of the second projecting wall 36 and the second hanging wall 37, and the upper nozzle body 26. It is poured to the rear side and a position slightly distant from the upper nozzle body 26 (position far from the front side). At this position, the cups in the third row of the cup storage portion 53 are arranged side by side, and water is well applied to the outside of these cups, and these cups are washed well (see FIGS. 2 and 3). The cups arranged in the first row of the cup storage portion 53 are well hit by water that is sprayed from the nozzle arm 7 and bounces off the front part of the top surface of the cleaning cabinet 2, and the outside of these cups is covered with this water. Washed well.

  As is clear from the above description, the first injection port 30, the first deflecting body 32, the first projecting wall 33, and the first hanging wall 34 constitute the first injection portion of the present invention, and the second injection port 31, The second deflecting body 35, the second projecting wall 36, and the second hanging wall 37 constitute the second ejection portion of the present invention.

  By the way, this dishwasher is provided with the kitchen detergent course which wash | cleans tableware using a general kitchen detergent as mentioned above, The operation | movement in this kitchen detergent course is demonstrated easily.

  The user stores the tableware in the tableware basket 5, opens the doors 3 and 4, and stores the tableware basket 5 in the washing cabinet 2. Then, after putting an appropriate amount of general kitchen detergent into the washing cabinet 2 and closing the doors 3 and 4, the course is selected with the selection key 185 of the kitchen detergent course, and the start key 182 is pressed. In response to this operation, when the cleaning operation of the kitchen detergent course is started, after the operation is started, the first washing process is first performed using the cleaning water mixed with the general kitchen detergent. In this first washing step, washing is repeatedly carried out by repeating the operation of spraying cleaning water on the tableware for a short time and leaving it for a longer time than the spraying time. Next, the water in the washing chamber 2 is replaced, and the second washing step is performed using washing water with a very low concentration mixed with a slight amount of detergent remaining after draining the first washing step. Thereafter, three rinsing steps are performed to wash away the washing water adhering to the tableware. And in order to raise the drying efficiency at the time of the next drying by performing disinfection and warming tableware, the heating rinse process using high temperature hot water is performed. Finally, a drying process for supplying heated air into the cleaning cabinet 2 is executed, and all processes are completed when a predetermined drying operation time is completed.

  Now, in this kitchen detergent course, even if it drains after a 1st washing process or a 2nd washing process, a bubble tends to remain on the bottom part in the washing cabinet 2 or the wire rod part of the tableware basket 5. Therefore, the rinsing performance may be deteriorated due to the influence of the remaining bubbles. In this dishwasher, when the washing and draining pump 12 operates as a draining pump, the washing impeller rotates in the opposite direction to that during washing. The cleaning impeller is of a spiral type, and water is pumped even when rotated in the reverse direction, although the force is extremely inferior to that during cleaning. For this reason, water is also sent to the upper nozzle body 26 during drainage (particularly at the initial stage of drainage) after the first washing process and the second washing process, and the upper nozzle body 26 is weakly downward. Water is sprinkled towards. As a result, the foam remaining on the bottom of the washing cabinet 2 and the wire portion of the tableware basket 5 is washed away. At this time, the remaining bonds remaining at the bottom in the washing cabinet 2 can also be washed away.

  As described above, according to the dishwasher of the present embodiment, the upper nozzle body 26 can widely pour water on a plurality of cups arranged in the lateral direction on the front side (second row) of the cup storage portion 52. In addition, since a plurality of cups arranged in the lateral direction on the rear side (third row) of the cup storage portion 53 can be dripped with water, the outside of these cups can be washed well. Accordingly, the cleaning performance can be improved.

  Further, since the inner wall of the washing cabinet 2 and the dish basket 5 can be washed with water discharged from the upper nozzle body 26 during drainage, even if bubbles remain on the inner wall of the washing cabinet 2 or the dish basket 5 in a kitchen detergent course, This can be washed away and the rinsing performance is improved. Moreover, the residual bonds attached to the inner wall of the washing cabinet 2 and the tableware basket 5 can be washed away, and the washing performance is improved.

  As mentioned above, although one Example of this invention was described, this invention is not limited to the content of said Example, A various change is possible within the range of a claim description.

It is a perspective view of the dishwasher which is one Example of this invention. It is side surface sectional drawing of the dishwasher of a present Example. It is a front view of the principal part which removed the upper door and lower door of the dishwasher of a present Example. It is a top view of the operation panel of the dishwasher of a present Example. It is a longitudinal cross-sectional view of the principal part which shows the structure of the upper nozzle body in the dishwasher of a present Example. It is the figure which looked at the upper nozzle body in the dishwasher of a present Example from back. It is the figure which looked at the upper nozzle body in the dishwasher of a present Example from the downward direction.

Explanation of symbols

2 Cleaning cabinet 5b Upper basket 12 Cleaning and drainage pump (water supply device, drainage device)
26 Upper nozzle body 30 1st injection port (1st ejection part)
32 1st deflection body (1st ejection part)
33 1st protrusion wall (1st ejection part)
34 First hanging wall (first ejection part)
31 2nd injection port (2nd ejection part)
35 Second deflector (second ejection part)
36 Second projecting wall (second ejection part)
37 Second hanging wall (second ejection part)
53 cup compartment

Claims (2)

A washing cabinet for storing and washing tableware, an upper basket accommodated in the upper part of the washing cabinet, and provided in at least a part of the upper basket, each having a plurality of cups in the front-rear direction and the left-right direction. A cup storage section that can be stored, an upper nozzle body that is disposed above the cup storage section in the washing cabinet and that sprays water toward the cup stored in the cup storage section, and water supply that sends water to the upper nozzle body With the device,
The upper nozzle body has a first ejection part that ejects water so as to diffuse downward in a lateral direction with respect to one direction of the front, rear, left, and right directions, and on a side opposite to the one direction. A dishwasher comprising: a second ejection portion that ejects water so as to diffuse downwardly and laterally with respect to the opposite direction.   The apparatus according to claim 1, further comprising a drainage device for draining water used for cleaning, wherein water is sent from the water supply device to the upper nozzle body and drained from the upper nozzle body during drainage by the drainage device. The dishwasher described.

Images