JP2018027241A - dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher which has a detergent feeding port inside a washing chamber without reducing the number of tableware placed in a dish basket at a time.SOLUTION: A dishwasher includes: a housing which forms a contour; a washing chamber which is housed inside the housing and has a shaft part in a central part of a bottom surface; a dish basket which is arranged inside the washing chamber and is configured to place tableware; and a washing nozzle which is rotatably supported by the shaft part for jetting water to the tableware. The washing nozzle has an upper nozzle which protrudes upward from a position being a rotation center and has a jetting port for jetting washing water in an upper part. The dish basket is equipped with a nozzle guard for covering the upper nozzle in a central part, and an opened detergent feeding port is provided above the nozzle guard.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a dishwasher, and more particularly to a detergent inlet in a washing tank.

  Conventionally, a washing tub having an opening at the top, a tableware container for storing dishes in the washing tub, and a housing that can be stored in the front-rear direction are provided, and a detergent is placed at a predetermined position in the washing tub. There has been proposed a dishwasher in which a detergent container having a detergent inlet for charging is provided in a washing tank (see, for example, Patent Document 1).

  In Patent Literature 1, a space is provided between the washing tank and the tableware basket, and a detergent container is disposed in the space.

JP 2006-61450 A

  However, in Patent Document 1, in order to provide a space for placing the detergent container between the washing tub and the tableware basket, the size of the tableware basket is reduced, and there is a dead space between the washing tub and the tableware basket. It has occurred. Therefore, the subject that the number of the tableware which can be mounted and wash | cleaned at once at the mounting part of a tableware basket has decreased has occurred.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a dishwasher in which a detergent inlet is provided in a washing tank without reducing the area of the table-ware placing portion. It is said.

  The dishwasher according to the present invention includes a casing serving as an outer shell, a cleaning tank housed in the casing and having a shaft portion at the center of the bottom, and disposed in the cleaning tank, on which tableware is placed. A washing nozzle that is rotatably supported by the shaft portion and sprays water toward the tableware, and the washing nozzle protrudes upward from a position serving as a rotation center, The nozzle for spraying the cleaning water has an upper nozzle provided at the top, and the tableware basket is provided with a nozzle guard that covers the upper nozzle at the center, and the nozzle guard is open at the top. A detergent inlet is provided.

  According to the dishwasher according to the present invention, the tableware basket is provided with a nozzle guard that covers the upper nozzle at the center and prevents the interference of the tableware. Is provided. In other words, the space for protecting the upper nozzle in the washing tank is effectively utilized, and the detergent inlet is provided in the washing tank, so there is no need to reduce the size of the tableware basket to provide the detergent inlet. . Therefore, the detergent charging port can be provided in the washing tank without reducing the area of the tableware basket mounting portion.

It is sectional drawing seen from the right side which shows schematic structure of the dishwasher which concerns on embodiment of this invention. It is a front view of the dishwasher which concerns on embodiment of this invention. It is a perspective view of a washing tub of a dishwasher concerning an embodiment of the invention. It is a perspective view of the tableware basket of the dishwasher which concerns on embodiment of this invention. It is the perspective view which has arrange | positioned the tableware basket in the washing tank of the dishwasher which concerns on embodiment of this invention. It is the perspective view which has arrange | positioned the tableware basket and the upper tableware basket in the washing tank of the dishwasher which concerns on embodiment of this invention. It is sectional drawing which looked at the inside of the washing tank of the dishwasher which concerns on embodiment of this invention from the front.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, in the following drawings, the relationship of the size of each component may be different from the actual one. In the following description, terms for indicating directions (for example, “up”, “down”, “left”, “right”, “front”, “back”, etc.) are used as appropriate for easy understanding. This is for explanation and these terms do not limit the present invention.

Embodiment.
FIG. 1 is a cross-sectional view seen from the right side showing a schematic configuration of a dishwasher 1 according to an embodiment of the present invention.
Hereinafter, a schematic overall configuration of the dishwasher 1 according to the embodiment of the present invention will be described.

  As shown in FIG. 1, the dishwasher 1 according to the present embodiment has a front opening that is open at the front, a housing 2 that is an outer shell of the dishwasher 1, and an upper opening that is open at the top. The washing tub 3 for storing the tableware 70 placed in the tableware basket 50, the lid 4 provided on the upper surface of the washing tub 3 for opening and closing the upper surface opening of the washing tub 3, and the washing tub 3 And a door portion 5 that opens and closes when the cleaning tank 3 provided inside the housing 2 is taken out.

  A water supply valve 10 is provided inside the housing 2. The water supply valve 10 supplies tap water to the cleaning tank 3, and in the cleaning process described later, cleaning water containing detergent in the water is used, and in the rinsing process, rinsing water that does not contain detergent is used in the cleaning tank. 3 is supplied.

  The cleaning tank 3 has a substantially box shape, and is provided with a concave portion 3a protruding vertically downward at least at a part of the bottom surface. A water level detection device 11 for detecting the level of the cleaning water stored in the cleaning tank 3 and a water temperature detection device 17 for detecting the temperature of the cleaning water are provided on one of the four side surfaces or the bottom surface of the recess 3a. A water heater 12 for heating the cleaning water and a pressure pump 13 for pressurizing the cleaning water are respectively attached.

  The pressurizing pump 13 is provided outside the cleaning tank 3, and the cleaning water pressurized by the pressurizing pump 13 passes through the shaft part 30 provided on the bottom surface of the cleaning tank 3 to the shaft part 30. It is sent to the washing nozzle 40 which is composed of the upper nozzle 41 and the lower nozzle 42 attached. Then, cleaning water is sprayed from the cleaning nozzle 40 toward the tableware 70, and the tableware 70 is cleaned. Similarly to the pressurizing pump 13, a drainage pump 16 is provided outside the cleaning tank 3. The drain pump 16 communicates with the recess 3 a of the cleaning tank 3 through the drain pipe 16 a and drains the cleaning water stored in the cleaning tank 3.

  Further, a drying heater 23 for heating the air to warm air and a drying fan 22 for supplying the warm air into the cleaning tank 3 are respectively attached to the rear of the cleaning tank 3. ing.

  The lid 4 is attached to the upper part of the inner surface of the housing 2. One end of a link mechanism (not shown) is attached to the lid 4, and the other end of the link mechanism is attached to the upper part of the inner surface of the housing 2. And by this link mechanism, when the washing tank 3 is pulled out, the lid body 4 is lifted so that the washing tank 3 can be opened.

  Thereby, when the washing tank 3 is drawn out, the lid body 4 is not drawn out together with the washing tank 3. On the other hand, when the cleaning tank 3 is pushed in, the lid 4 is lowered by the link mechanism so that the cleaning tank 3 can be closed.

  The cleaning tank 3 can be moved forward by being pulled out to the front side by a fixed rail 21 provided in the housing 2 and a movable rail (not shown) provided in the cleaning tank 3. . Further, the housing 2 is provided with a holding mechanism 18 for holding the cleaning tank 3 inside the housing 2 so as not to move forward except when the cleaning tank 3 is required.

  When the cleaning tank 3 is pushed into the inside of the housing 2 to a predetermined holding position, the cleaning tank 3 is held at a predetermined position by the holding mechanism 18. At this time, the holding mechanism 18 comes to be urged by a spring (not shown) with the force opposite to the pulling direction of the cleaning tank 3 and can hold the cleaning tank 3.

  A control device 9 is provided in a space between the back surface of the door portion 5 and the front surface of the cleaning tank 3. The control device 9 is, for example, dedicated hardware or a CPU (also referred to as a central processing unit, a central processing device, a processing device, an arithmetic device, a microprocessor, a microcomputer, or a processor) that executes a program stored in a storage unit. It is comprised and controls operation | movement of the dishwasher 1. FIG.

FIG. 2 is a front view of the dishwasher 1 according to the embodiment of the present invention.
As shown in FIG. 2, a door portion 5 is provided on the front surface of the dishwasher 1. The door portion 5 has an operation panel 15 at the top, and an operation portion 7 is provided on the right side of the operation panel 15. The operation unit 7 receives an operation instruction input from a user and outputs an operation signal corresponding to the input to the control device 9. The operation unit 7 is provided with a power switch 8 a for turning on the power of the dishwasher 1 and an operation switch 8 b for starting and temporarily stopping the operation of the dishwasher 1.

  In addition, a handle portion 14 is provided at a substantially central position in the left-right direction of the operation panel 15 for putting a hand on the front side when the cleaning tank 3 is pulled out. Further, on the left side of the operation panel 15, a door portion exhaust port 5 a for discharging the air in the washing tub 3 to the outside of the dishwasher 1 is provided.

FIG. 3 is a perspective view of the washing tub 3 of the dishwasher 1 according to the embodiment of the present invention.
As shown in FIG. 3, a cleaning nozzle 40 is disposed in the cleaning tank 3, and the cleaning nozzle 40 is detachable so as to cover the shaft portion 30 provided at the center of the bottom surface of the cleaning tank 3 from above. And is rotatably supported by the shaft portion 30. The cleaning nozzle 40 is composed of an upper nozzle 41 protruding upward from a position overlapping with the shaft portion 30, that is, a position serving as the rotation center, and a lower nozzle 42 extending horizontally from the position serving as the rotation center. Yes. An upper part of the upper nozzle 41 is provided with an injection port 41a, and an upper surface of the lower nozzle 42 is provided with a plurality of injection holes 42a at intervals.

  FIG. 4 is a perspective view of the dish basket 50 of the dishwasher 1 according to the embodiment of the present invention, and FIG. 5 shows the dish basket 50 in the washing tub 3 of the dishwasher 1 according to the embodiment of the present invention. FIG. 6 is a perspective view in which the tableware basket 50 and the upper tableware basket 60 are arranged in the washing tub 3 of the dishwasher 1 according to the embodiment of the present invention.

  As shown in FIG. 4, the tableware basket 50 has a rectangular shape in plan view. The tableware basket 50 is provided with a nozzle guard 51 protruding upward at the center, and around the nozzle guard 51, a placement unit 53 on which the tableware 70 is placed is provided. As shown in FIG. 5, the nozzle guard 51 covers the upper nozzle 41 of the cleaning nozzle 40 provided at the center of the bottom surface of the cleaning tank 3 when the table basket 50 is arranged in the cleaning tank 3. ing. Therefore, it is possible to prevent the tableware 70 placed on the placement unit 53 from interfering with the upper nozzle 41 and preventing the washing nozzle 40 from being prevented from rotating during washing.

  Further, an upper portion of the nozzle guard 51 is opened, and a detergent inlet 52a through which detergent is introduced is formed. Around the detergent inlet 52a, a detergent inlet 52 that forms the detergent inlet 52a is formed. Is provided. The detergent charging portion 52 has a color different from that of the nozzle guard 51 so that the detergent charging port 52a formed therein can be easily distinguished.

  As shown in FIG. 6, an upper table basket 60 is disposed above the tableware basket 50, and the tableware 70 can be placed on the tableware basket 50 and the upper tableware basket 60, respectively. Yes. Thus, by arranging the upper table basket 60 above the table basket 50 to form a two-stage configuration, more tableware 70 can be placed as compared with the case of the one-stage configuration.

FIG. 7 is a cross-sectional view of the inside of the washing tub 3 of the dishwasher 1 according to the embodiment of the present invention as seen from the front.
As shown in FIG. 7, the tableware basket 50 is disposed above the lower nozzle 42, and the upper tableware basket 60 is disposed obliquely above the upper nozzle 41. During cleaning, the cleaning nozzle 40 rotates and the cleaning is performed from the injection port 41a of the upper nozzle 41 and the injection port 42a of the lower nozzle 42 toward the tableware 70 placed in the tableware basket 50 and the upper tableware basket 60. The tableware 70 is washed by spraying water.

  At this time, the cleaning water sprayed from the spray nozzle 41 a of the upper nozzle 41 is mainly applied to the tableware 70 placed on the upper tableware basket 60. The cleaning water sprayed from the spray nozzle 41 a of the upper nozzle 41 is sprayed within the range indicated by the two-dot chain line and the arrow in FIG. 7, but the dish basket 50 provided above the upper nozzle 41. The detergent charging part 52 is provided at a position outside the spray range of the upper nozzle 41. That is, the detergent charging unit 52 is disposed at a position that does not prevent the cleaning water from being jetted from the jet port 41a of the upper nozzle 41, and does not hinder cleaning.

  Further, the detergent inlet 52a is provided above the upper nozzle 41 located in the center of the cleaning tank 3, and the detergent introduced from the detergent inlet 52a is located laterally from the center of the cleaning tank 3. Since it spreads equally, it can be spread quickly throughout the interior of the washing tub 3. In addition, the detergent introduced from the detergent introduction port 52a falls to or near the injection port 41a of the upper nozzle 41 and the injection port 42a of the lower nozzle 42. Then, since the dropped detergent is well mixed with the water sprayed from the spray nozzle 41a of the upper nozzle 41 and the spray nozzle 42a of the lower nozzle 42 by the spray of the cleaning nozzle 40, the detergent is easily dissolved in the water and washed. Efficiency can be improved.

  Further, since the detergent insertion port 52a is provided at a high position above the upper nozzle 41, the tableware 70 placed in the tableware basket 50 and the upper tableware basket 60 is not obstructed when the detergent is charged, and the detergent It becomes easy to throw in. Further, as shown in FIG. 6, the detergent charging section 52 is provided on the side of the upper tableware basket 60 and has a structure that supports the side portion of the upper tableware basket 60. Therefore, the side part of the upper tableware basket 60 can be supported without separately providing a structure for supporting the side part of the upper tableware basket 60.

Next, the operation when the dishes 70 are washed and dried by the dishwasher 1 according to the present embodiment will be described.
First, the user puts his hand on the handle portion 14 to pull out the cleaning tank 3 to the front side, and the door portion 5 is opened. Then, dishes 70 to be washed and dried are placed on the tableware basket 50 and the upper tableware basket 60 accommodated in the washing tank 3 from the upper surface opening of the washing tank 3, and are placed in the washing tank 3 from the detergent charging port 52 a. An appropriate amount of detergent is put, and the cleaning tank 3 is pushed into the housing 2 to close the door portion 5. Accordingly, the cleaning tank 3 is held at a position where the door portion 5 is closed by the holding mechanism 18.

  Next, if the operation switch 8b provided in the operation part 7 is pushed by the user, the dishwasher 1 will start operation | movement. Note that the operation of the dishwasher 1 is controlled by the control device 9, and each functional component is operated according to the command, and the washing process, the rinsing process, the heating rinse process, and the drying process are performed in this order.

  When the operation switch 8b is pressed, the control device 9 first starts the cleaning process. When the cleaning process is started, first, the water supply valve 10 is opened, and tap water for cleaning is supplied into the cleaning tank 3. At this time, the water level in the cleaning tank 3 is detected by the water level detection device 11. And the control apparatus 9 will close the water supply valve 10, if it detects that the water level in the washing tank 3 reached the predetermined water level by the water level detection apparatus 11. FIG.

  Next, the control device 9 energizes the water heater 12 to heat cleaning water containing detergent in the stored tap water, energizes the pressurizing pump 13 to apply pressure to the cleaning water, and The cleaning water is supplied to the cleaning nozzle 40 through 30. At this time, the cleaning water is supplied to the upper nozzle 41 and the lower nozzle 42 via the shaft portion 30. Then, cleaning water is sprayed to the tableware 70 from the spray port 41 a of the upper nozzle 41 and the spray port 42 a of the lower nozzle 42.

  At this time, the cleaning nozzle 40 rotates in a predetermined direction around the shaft portion 30 by a reaction force corresponding to the amount of cleaning water sprayed, and sprays the tableware 70 evenly onto the tableware 70 while rotating. Clean. In other words, the dishwasher 1 rotates the washing nozzle 40 with washing water sprayed from the washing nozzle 40 without separately providing a driving means such as a motor for rotating the washing nozzle 40.

  Then, cleaning water can be poured from the injection nozzle 41 a of the upper nozzle 41 to the tableware 70 placed on the upper table basket 60, and placed on the tableware basket 50 from the injection nozzle 42 a of the lower nozzle 42. Washing water can be applied to the dishes 70. Therefore, both the tableware 70 placed in the upper tableware basket 60 and the tableware 70 placed in the tableware basket 50 can be washed simultaneously.

  Here, the cleaning in the cleaning process is performed while circulating the stored cleaning water. The cleaning water that has dropped to the bottom surface of the cleaning tank 3 is collected, pressure is applied again by the pressure pump 13, and the cleaning nozzle 40 is recovered. The spraying of the cleaning water onto the tableware 70 is repeated. Since the upper surface opening of the cleaning tank 3 is closed by the lid 4, the cleaning water does not splash outside the cleaning tank 3.

  In addition, the washing is performed while heating the washing water with the water heater 12, and the temperature of the washing water is usually set to a temperature at which the ability of the enzyme contained in the detergent can be maximized. It is set to about ℃. The temperature of the cleaning water is detected by the water temperature detector 17. Then, when the controller 9 detects that the temperature of the cleaning water has reached a predetermined temperature by the water temperature detector 17, the controller 9 stops energizing the water heater 12.

  When the cleaning process is started and a predetermined time elapses, the control device 9 stops energization of the water heater 12 and the pressure pump 13, energizes the drain pump 16, and stores the cleaning water stored in the cleaning tank 3. Drain the outside. And if drainage is completed, the control apparatus 9 will stop the electricity supply to the drainage pump 16, and, thereby, a washing | cleaning process is complete | finished.

  When the cleaning process is completed, the control device 9 subsequently starts the rinsing process. The basic operation is almost the same as the cleaning process. First, the water supply valve 10 is opened, and the tap water for rinsing into the cleaning tank 3 is used. Supply water. And the control apparatus 9 will close the water supply valve 10, if it detects that the water level in the washing tank 3 reached the predetermined water level by the water level detection apparatus 11. FIG.

  Next, the control device 9 energizes the pressurizing pump 13, applies pressure to the stored rinse water, and supplies the rinse water to the cleaning nozzle 40 via the shaft portion 30. Then, the rinsing water is sprayed to the tableware 70 from the spray port 41 a of the upper nozzle 41 and the spray port 42 a of the lower nozzle 42. The sprayed rinsing water is applied to the dishes 70 to rinse the cleaning water and fine dirt remaining on the dishes 70.

  When the rinsing process is started and a predetermined time has elapsed, the control device 9 stops energization of the pressurizing pump 13 and energizes the drainage pump 16, thereby rinsing the rinsing water stored in the cleaning tank 3 to the outside. Drain into. In the rinsing process, this series of operations is repeated several times. In this rinsing step, the water for rinsing is not heated by the water heater 12.

  When the rinsing process is completed, the control device 9 subsequently starts the heating rinsing process. The basic operation is the same as that of the washing process or the rinsing process, and water for rinsing by the water heater 12 is added to the rinsing process. The only difference is that it is warm.

  The temperature of the rinsing water is usually higher than the temperature of the rinsing water in order to finish the end of washing and to increase the temperature of the tableware 70 to improve the drying performance. It is generally set to 70 ° C. or higher (75 ° C. or higher for the O-157 countermeasure).

  When the heating rinsing process is completed, the control device 9 starts the drying process, which is the last process. When the drying process is started, the drying fan 22 is first energized to introduce air into the cleaning tank 3 and the drying heater 23 is energized to heat the air and warm air. The warm air is supplied into the cleaning tank 3 to dry the tableware 70 and the cleaning tank 3. And the warm air which dried these is discharged | emitted from the exhaust part (not shown) of the washing tank 3 to the exterior of the dishwasher 1 from the door part exhaust outlet 5a via an exhaust duct (not shown). .

Then, when the drying process is started and a predetermined time elapses, the control device 9 stops energization of the drying fan 22 and the drying heater 23, thereby ending the drying process.
When the drying process is completed, all the processes are completed.

  When all steps are completed, the user takes out the tableware 70. In the same manner as when the tableware 70 is placed on the tableware basket 50 and the upper tableware basket 60, the washing tank 3 is pulled out to the front side by placing a hand on the handle 14 and the door unit 5 is opened. And the tableware basket 50 accommodated in the washing tank 3 and the tableware 70 mounted in the upper tableware basket 60 are taken out from the upper surface opening of the washing tank 3, and the washing tank 3 is pushed into the housing 2. The door part 5 is closed.

  As mentioned above, according to the dishwasher 1 which concerns on this Embodiment, the tableware basket 50 is provided with the nozzle guard 51 which covers the upper nozzle 41 in the center part, and prevents interference with the tableware 70. At the top, an open detergent inlet 52a is provided. That is, since the detergent inlet 52a is provided in the washing tank 3 by effectively using the space for protecting the upper nozzle 41 in the washing tank 3, the size of the tableware basket 50 is provided to provide the detergent inlet 52a. There is no need to make it smaller. Therefore, the detergent charging port 52a can be provided in the cleaning tank 3 without reducing the area of the placing portion 53 of the tableware basket 50.

  The detergent inlet 52 a is provided above the nozzle guard 51, that is, above the upper nozzle 41 located at the center of the cleaning tank 3. The detergent introduced from the detergent inlet 52 a Since it spreads equally from the center to each side, the entire interior of the cleaning tank 3 can be quickly spread.

  Further, the detergent charging portion 52 of the tableware basket 50 provided above the upper nozzle 41 is provided at a position outside the injection range of the upper nozzle 41. That is, the detergent charging unit 52 is disposed at a position that does not prevent the cleaning water from being jetted from the jet port 41a of the upper nozzle 41, and does not hinder cleaning.

  The detergent charging part 52 has a color different from that of the nozzle guard 51 so that the detergent charging port 52a formed therein can be easily distinguished.

  The detergent charging part 52 is provided on the side of the upper tableware basket 60 and has a structure that supports the side portion of the upper tableware basket 60. Therefore, the side part of the upper tableware basket 60 can be supported without separately providing a structure for supporting the side part of the upper tableware basket 60.

  DESCRIPTION OF SYMBOLS 1 Dishwasher, 2 housing | casing, 3 washing tank, 3a recessed part, 4 cover body, 5 door part, 5a door part exhaust port, 7 operation part, 8a power switch, 8b operation switch, 9 control apparatus, 10 water supply valve, 11 Water level detector, 12 Water heater, 13 Pressure pump, 14 Handle, 15 Operation panel, 16 Drain pump, 16a Drain pipe, 17 Water temperature detector, 18 Holding mechanism, 21 Fixed rail, 22 Drying fan, 23 For drying Heater, 30 shaft part, 40 cleaning nozzle, 41 upper nozzle, 41a injection port, 42 lower nozzle, 42a injection port, 50 tableware basket, 51 nozzle guard, 52 detergent introduction part, 52a detergent introduction port, 53 mounting part, 60 Upper tableware basket, 70 tableware.

Claims (4)

An outer casing,
A cleaning tank housed in the housing and having a shaft portion at the center of the bottom surface,
A tableware basket placed in the washing tank and on which tableware is placed,
A cleaning nozzle that is rotatably supported by the shaft portion and sprays water toward the tableware;
The washing nozzle is
It has an upper nozzle that protrudes upward from a position that becomes the center of rotation, and has an upper nozzle provided with an injection port for injecting cleaning water,
The tableware basket
A nozzle guard that covers the upper nozzle is provided in the center,
A dishwasher characterized in that an upper opening of the nozzle guard is provided with an open detergent inlet. A detergent charging part that forms the detergent charging port is provided,
The detergent charging part is
The dishwasher according to claim 1, wherein the dishwasher is provided at a position outside the injection range of the upper nozzle. The dishwasher according to claim 2, wherein the detergent charging unit has a color different from that of the nozzle guard. Above the tableware basket is provided an upper tableware basket on which tableware is placed,
The dishwasher according to claim 2 or 3, wherein the detergent charging portion supports a side portion of the upper tableware basket.

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