JPH04279135A - Dish washer - Google Patents

Abstract

PURPOSE:To prevent impact and noise due to water pressure, when a water supply pipe which supplies water in a washing tank of a dish washer is closed by a water supply valve, from generating. CONSTITUTION:A water supply pipe 8 is connected to a washing tank 2 and a water supply valve 9 is provided on the water supply pipe 8, and water is supplied by opening/closing of the water supply valve 9. For the water supply valve 9, a gradually operating valve such as an motor operating valve or thermally operating valve, etc., is used. By this method, the water supply pipe 8 is gradually opened/closed, and a large water pressure variation is not generated at the time of closing.

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

[Prior Art] As is well known, a dishwasher sprays washing water from a jet nozzle onto dishes stored in a washing tank, and then adds detergent to the dishes for main washing, rinsing, and rinsing. It performs a series of cleaning operations such as heating and rinsing, drying with a heater, and blowing air with an air blower. Washing water is supplied through a water supply pipe connected to the water supply, and the waterway is opened and closed by a water supply valve.
A solenoid valve is used as the water supply valve.

0003

[Problems to be Solved by the Invention] In the conventional dishwasher as described above, water is supplied by opening and closing the water supply valve, and when the water supply valve is energized, the water supply channel is instantly shut off. There are problems in that water pressure generates shocks, noises, etc., which gives discomfort to the user, and reduces reliability due to fatigue of the water supply valve.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a dishwasher that can prevent impact and accompanying noise from occurring when the water supply valve is closed. shall be.

[0005]

[Means for Solving the Problems] A dishwasher according to the present invention uses a slow-acting valve that slowly opens and closes a water supply pipe as a water supply valve.

[0006]

[Operation] In this invention, since a slow-acting valve is used for the water supply valve, the water supply pipe is opened and closed slowly, and the water pressure does not suddenly change.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 are diagrams showing one embodiment of the present invention, with FIG. 1 being a longitudinal side view and FIG. 2 being a conceptual diagram of a water supply valve. In the figure, 1 is a main body, 2 is a washing tank provided in the main body 1, a water supply port 3 is provided at the top, and a drainage basin 4 for storing washing water is formed at the bottom. A water supply port 5 and a drain port 6 are provided for circulating wash water, and a leftover filter 7 is disposed between these ports. 8
9 is a water supply pipe whose one end is connected to the water supply port 3 and the other end is extended outside the main body 1 and connected to a water faucet, etc. 9 is a slow-acting valve consisting of an electric valve installed in the water supply pipe 8. For example, Kiuchi This is shown in Ishi's "Mechanical Design Handbook New Edition" (October 20, 1986), Nikkan Kogyo Shimbun, p. 784.As shown in Figure 2, the pinion is Rack 9d rotates 9c and engages with pinion 9c
The water supply pipe 8 is opened and closed by reciprocating the valve body 9e and operating the valve body 9e.

10 is a cleaning pump connected to the water supply port 5;
11 is a water pipe whose one end is connected to the discharge side of the cleaning pump 10; 12 is an injection nozzle that is rotatably supported in a horizontal plane and has a plurality of injection ports 13, which is connected to the other end of the water pipe 11; There is. Reference numeral 14 denotes a basket for storing tableware 15, and its movement is guided by a rail 16 provided inside the washing tank 2. 17 is an opening provided in the front of the main body 1;
It is opened and closed by a door 18. A drain pipe 19 has one end connected to the drain port 6 of the drain sump 4, and is drawn out of the main body 1 via a drain pump 20.

In the dishwasher constructed as described above, when the motor 9a of the water supply valve 9 is driven, its rotation is decelerated and the pinion 9c rotates. Now rack 9d
is driven, the valve body 9e moves in the direction of arrow A, and the water supply pipe 8
gradually opens, and washing water is supplied from the water supply port 3 into the washing tank 2 and stored in the drainage basin 4. When a predetermined amount of water is supplied, the motor 9a rotates in reverse, and the valve body 9e moves in the direction of arrow B in the reverse direction, and the water supply pipe 8 gradually closes. Therefore, there is no sudden change in water pressure, and no impact or noise is generated. Therefore, it can also meet the official standards for water hammer prevention imposed on appliances directly connected to water supply.

The cleaning water stored in the drainage basin 4 is guided from the water supply port 5 to the injection nozzle 12 via the water supply pipe 11 by the cleaning pump 10. The injection nozzle 12 is the cleaning pump 10
While rotating, washing water is sprayed from the injection port 13 onto the tableware 15 in the basket 14 to wash it. During this time, the leftovers contained in the washing water are removed through the leftovers receiving filter 7.
The wash water is filtered.

When cleaning has been carried out for a predetermined period of time, the cleaning pump 10 is stopped, the drain pump 20 is activated, and the cleaning water in the drainage basin 4 is discharged to the outside of the main body 1 through the drain pipe 19. Then, new cleaning water is supplied and the cleaning pump 10
drive, rinse and discharge the washing water. Finally, electricity is applied to an electric heater (not shown) to dry the tableware 15. After that, the door 18 is opened and the car 14 is pulled out. Then, the leftover food filter 7 is taken out, the leftover food adhering to the filter 7 is cleaned, and the leftover food filter 7 is reset in the drainage basin 4.

[0012] In the above embodiment, a slow-acting valve is used as the water supply valve 9, and an electric-operated valve is described as an example thereof, but the present invention is not limited to this. A valve train may also be used.

[0013]

Effects of the Invention As explained above, in this invention, a slow-acting valve that slowly opens and closes the water supply pipe is used as the water supply valve that supplies water to the cleaning tank. There is no sudden change in the water supply valve, no impact or accompanying noise is generated, and there is an effect of eliminating discomfort to the user and reducing reliability due to fatigue of the water supply valve.

[Brief explanation of the drawing]

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

[Figure 2] Conceptual diagram of the water supply valve in Figure 1

[Explanation of symbols]

2　Washing tank 8 Water supply pipe 9 Water supply valve 10 Washing pump 12 Injection nozzle 15 Tableware

Claims (1)

[Claims] Claim 1: A dishwasher comprising a water supply pipe that supplies water to the washing tank to be sprayed onto tableware stored in the washing tank, and a water supply valve that opens and closes the water supply pipe, wherein the water supply pipe is provided with a water supply valve that opens and closes the water supply pipe. A dishwasher characterized in that a slow-acting valve that slowly opens and closes a pipe is used as the water supply valve.