JPH04279138A - Dish washer - Google Patents

Abstract

PURPOSE:To enable the wash water of a dish washer to contribute to washing even during the water supply time. CONSTITUTION:The ceiling part of a washing tank 4 is provided with a feed water nozzle 25 connected with a water supply pipe 23 and water is caused to fall. A plate-shaped diffusion board 26 facing the feed water nozzle 25 and diffusing a falling water is provided below an upper dish cage 20 so that water is scattered from the peripheral part of the diffusion board and poured on tableware 16 to previously wash the tableware.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a dishwasher that sprays washing water onto dishes stored in a washing tank.

0002

2. Description of the Related Art FIG. 6 is a longitudinal sectional side view of a conventional dishwasher shown, for example, in FIG. 19 of Japanese Patent Laid-Open Publication No. 2-46926. In the figure, 1 is a main body, and 2 is an opening provided in the front of the main body 1, to which a door 3 is pivotally attached. Reference numeral 4 denotes a cleaning tank provided in the main body 1, and a water supply port 4a is provided at the top, and a drainage basin 8 for storing cleaning water is formed at the bottom, and this drainage basin 8 is used to circulate the cleaning water. A water supply port 8a and a drain port 8b are provided. Reference numeral 10 indicates a waste filter that is removably set in the upper opening of the drainage basin 8, and 23 indicates a water faucet with one end connected to the water supply port 4a via a solenoid valve 24 and the other end extended outside the main body 1. 11 is a cleaning pump connected to the water supply port 8a, 19 is a water supply pipe whose one end is connected to the discharge side of the cleaning pump 11, 17 is rotatably supported in a horizontal plane, and a plurality of This is an injection nozzle having an injection port 18 , which is connected to the other end of the water pipe 14 . 20 is a basket for storing tableware 16, and 21 is a drain pipe whose one end is connected to the drain port 8b of the drain sump 8, and which is drawn out to the outside of the main body 1 via a drain pump 22.

A conventional dishwasher is constructed as described above and operates as follows. First, open the solenoid valve 24,
A predetermined amount of cleaning water is supplied into the cleaning tank 4 from the water supply port 4a via the water supply pipe 23. The cleaning water stored in the drainage basin 8 is transferred from the water supply port 8a to the water supply pipe 1 by the cleaning pump 11.
4 and is guided to the injection nozzle 17. The injection nozzle 17 injects washing water from the injection port 18 onto the tableware 16 in the basket 20 by water supply from the washing pump 11, and washes the tableware 16 while rotating by the reaction force. During this time, the leftover food contained in the wash water is blocked from passing through by the leftover food receiving filter 10, and the wash water is filtered.

When cleaning has been carried out for a predetermined period of time, the cleaning pump 11 is stopped, the drain pump 22 is activated, and the cleaning water in the drainage basin 8 is discharged to the outside of the main body 1 through the drain pipe 21. Next, new cleaning water is supplied and the cleaning pump 11
drive, rinse and discharge the washing water. Finally, electricity is applied to an electric heater (not shown) to dry the tableware 16. After that, the door 3 is opened and the car 20 is pulled outside. Then, the leftover food filter 10 is taken out, the leftover food that has adhered to the filter 10 is cleaned, and the leftover food is reset in the drainage basin 8.

[0005]

[Problems to be Solved by the Invention] In the dishwasher configured as described above, the washing pump 11 is operated after a predetermined amount of water is stored in the washing tank 4. The problem is that this does not contribute to cleaning at all, and it becomes a dead time from a cleaning perspective.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a dishwasher in which the water supply time can also contribute to washing.

[0007]

[Means for Solving the Problems] A dishwasher according to a first aspect of the present invention is provided with a water supply nozzle on the ceiling of a washing tank, and the water supply nozzle is disposed below the tableware basket to diffuse falling water. It is equipped with a dish-shaped diffuser plate.

A dishwasher according to a second invention rotatably supports the diffusion plate of the first invention, and has radial and curved walls or grooves formed on its surface.

[0009]

[Operation] In the first aspect of the present invention, since the water falling from the water supply nozzle on the ceiling of the cleaning tank is received by the dish-shaped diffusion plate, the diffusion plate scatters the water.

Furthermore, in the second aspect of the invention, the diffusion plate is rotatably supported and has radial and curved walls or grooves on its surface, so that the diffusion plate scatters water while rotating with the water flow.

[0011]

[Example] Example 1. 1 to 3 are views showing an embodiment of the first invention of the present invention, FIG. 1 is a longitudinal side view, FIG. 2 is a plan view of a diffuser plate, and FIG. 3 is a longitudinal sectional view of FIG. Portions similar to those of the conventional device are designated by the same reference numerals. In the figure, 1 is a main body of a dishwasher, and an opening 2 and a door 3 for opening and closing the opening 2 are provided on the front side of the main body of the dishwasher. Reference numeral 4 denotes a cleaning tank provided to partition the inside of the main body 1 and communicates with the opening 2; 5, a steam vent hole bored in the upper plate 6 of the cleaning tank 4; and 7, a steam vent hole bored in the lower side wall of the cleaning tank 4. The intake hole 8 is a drainage basin provided at the bottom of the cleaning tank 4, and is formed in the shape of a dish with a concave leftover receptacle 9 on one side of the bottom, and a removable leftover receptacle filter 10 is attached thereto. It is provided. 11 is a cleaning pump connected to the drainage basin 8;
A rod-shaped lower injection nozzle 12 is rotatably provided in a horizontal plane, has a plurality of injection ports 13 , and is connected to the cleaning pump 11 through a water pipe 14 . 15 is the lower injection nozzle 1
A lower tableware basket placed above 2 for storing tableware 16, and a receiving part (not shown) provided on the side wall of the washing tank 4.
It is placed on.

Reference numeral 17 denotes a rod-shaped upper spray nozzle arranged above the lower tableware basket 15 and rotatable in a horizontal plane;
It has a plurality of injection ports 18 and is connected to the cleaning pump 11 through a water pipe 19. 20 is an upper tableware basket arranged above the upper injection nozzle 17 and stores the tableware 16; 21 is a drain pipe connected to the leftover dish receiver 9 via a drain pump 22;
23 is a water supply pipe whose one end is connected to a water supply (not shown) and whose other end is piped to the ceiling of the cleaning tank 4 via a solenoid valve 24; 25 is a water supply nozzle which is connected to the tip of the water supply pipe 23 and opens downward; , 26 is a diffuser plate fixed to the upper surface of the water pipe 19, and is formed into a dish shape with a curved inclined surface 26a that is high at the center, becomes lower toward the periphery, and becomes slightly higher again at the periphery.

27 is a drying heater installed between the inner wall of the main body 1 and the cleaning tank 4; 28 is a blower driven by a motor 29; and 30 is placed in a passage leading to the steam vent hole 5 to discharge steam from the cleaning tank 4. An outlet side temperature sensor 31 detects the temperature of the hot air coming from the drying heater 27; 31 is an inlet temperature sensor placed in the intake hole 7 and detects the temperature of hot air from the drying heater 27; 32 stores detergent; This is a detergent dispenser box that you open and add detergent.

Next, the operation of this embodiment will be explained. First, the door 3 is opened, the upper and lower tableware baskets 20, 15 are pulled out and the tableware 16 is placed therein, and the tableware baskets 20, 15 are set in the washing tank 4, after which the door 3 is closed. By turning on the solenoid valve 24, tap water passes through the water supply pipe 23 and falls from the water supply nozzle 25. This water stream falls on the diffusion plate 26, flows along the curved inclined surface 26a, scatters diagonally upward from the periphery, and is poured onto the tableware 16 in the upper tableware basket 20. With this, the leftover food adhering to the tableware is dropped and dropped, poured onto the tableware 16 of the lower tableware basket 15, and the dirt is similarly removed and stored in the drainage basin 4. In other words, preliminary pre-washing will be performed along with water supply.

Next, when the cleaning pump 11 is operated, the cleaning water in the drainage basin 4 passes through the water pipe 19 and reaches the upper injection nozzle 17.
At the same time, the water is sent to the lower injection nozzle 12 through the water pipe 14, and is injected from the injection ports 18 and 13, respectively. Then, the upper and lower spray nozzles 17, 12 rotate by the reaction force of those spraying forces, and the tableware is prewashed.

When the pre-washing is completed, the drain pump 22 is activated and the water in the drain sump 8 is discharged to the outside through the drain pipe 21. At this time, the leftover food washed away from the tableware 16 is collected by the leftover food receiving filter 10. Next, the water supply pipe 23
At the same time, water is supplied from the detergent input box 32, and the cleaning pump 11 is operated to perform cleaning. At this time, in order to improve the cleaning effect, an electric heater (not shown) is turned on and off to raise the water temperature.

Next, water is supplied from the water supply pipe 23, and the washing water is circulated again by the washing pump 11 to rinse the tableware 16, and drained after a predetermined period of time. Once this rinsing process is complete,
Water is supplied from the water supply pipe 23, the cleaning pump 11 is turned on, and at the same time, rinse is introduced from a rinse input box (not shown). Then, the temperature of the water is raised to a predetermined temperature using the electric heater, and the water is sprayed from the upper and lower injection nozzles 17, 12 to perform heated rinsing and drain the water.

Finally, in the drying process, the blower 28 and the drying heater 27 are operated to draw in outside air from the suction port (not shown), and after heating it with the drying heater 27, it is drawn into the cleaning tank 4 from the suction hole 7. Blow in to evaporate the moisture in tableware 16. Then, the drying heater 27 is turned off, and the blower 28 blows the steam in the cleaning tank 4 to the steam escape hole 5.
The water is discharged to the outside through an exhaust port (not shown), and the series of cleaning steps is completed.

Example 2. 4 and 5 are diagrams showing an embodiment of the second invention of the present invention, FIG. 4 is a plan view of the diffuser plate, FIG. 5 is a longitudinal cross-sectional view of FIG. 4, and FIG. is also shared. The diffusion plate 26 of this embodiment has a radial curved wall 26b formed along a curved inclined surface 26a shown in FIGS. Possibly supported. That is, since the water flow falling from the water supply nozzle 25 flows along the curved wall 26b, rotational force is generated in the diffusion plate 26, and the diffusion plate 26 scatters water from the peripheral portion while rotating. In this embodiment, the curved wall 26b is formed on the diffuser plate 26, but the same function can be expected even if the curved wall 26b is formed as a curved groove.

[0020]

[Effects of the Invention] As explained above, in the first aspect of the present invention, a water supply nozzle is provided on the ceiling of the washing tank, and a dish-shaped diffusion plate is provided below the tableware basket opposite to the water supply nozzle. The diffuser plate has the effect of scattering the falling water for pre-washing, and contributing to washing even during the water supply time.

Further, in the second aspect of the present invention, the diffusion plate is rotatably supported and radial and curved walls or grooves are formed on the surface, so that the diffusion plate scatters water while rotating with the water flow. It has the same effect as above.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing an embodiment of a dishwasher according to a first aspect of the present invention.

FIG. 2 is a plan view of the diffuser plate in FIG. 1.

FIG. 3 is a vertical cross-sectional view of FIG. 2;

FIG. 4 is a plan view of a diffusion plate showing an embodiment of the dishwasher according to the second aspect of the present invention.

FIG. 5 is a longitudinal cross-sectional view of FIG. 4;

FIG. 6 is a vertical sectional side view showing a conventional dishwasher.

[Explanation of symbols]

4 Washing tank 16 Tableware 20 Upper tableware basket 23 Water supply pipe 25 Water supply nozzle 26 Diffusion plate 26a Curved inclined surface 26b Curved wall

Claims (2)

[Claims] Claim 1: A tableware basket that is housed in a washing tank and stores tableware, a water supply nozzle that is provided on the ceiling of the washing tank and opens downward to drop water, and a water supply nozzle that is fixed below the tableware basket. A dishwasher comprising a dish-shaped diffusion plate that faces the water supply port and diffuses water falling from the water supply port. 2. A dishwasher, characterized in that the diffusion is rotatably supported, and a radial and curved wall or groove is formed on a surface facing the water supply port.