JPH04319328A - Dish washer - Google Patents

Abstract

PURPOSE:To prevent a washing filter provided on a dish washer washing pump inlet side from being clogged. CONSTITUTION:A washing filter 11 is incliningly arranged in opposition to the inlet side of a washing pump 16 connected to a drain basin 8 provided at the bottom portion of a washing tank 4. Meanwhile, a garbage receiving portion 9 is formed at the drain basin 8 and a drain filter 10 is provided thereat, and a drain pipe 28 is connected to the portion 9 through a drain pump 29. A branching off pipe 45 branching off from the discharge side drain pipe 28 of the pump 29 through a branch stream filter 46 is made to open at the filtering chamber 12 of the drain basin 8. Thus, drainage branch-streaming into the pipe 45 is jetted out into the filter chamber 12, and garbage stuck to the washing filter 11 are washed away.

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] FIGS. 2 and 3 are, for example, Japanese Patent Application No. 2-122
FIG. 2 is a partially cutaway front view and FIG. 3 is a longitudinal side view of the conventional dishwasher shown in the specification and drawings of No. 130. In the figure, 1 is a main body of a dishwasher, and the front thereof is provided with an opening 2 and a door 3 for opening and closing the opening 2. 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 into a dish shape with a concave leftover receiving part 9 on one side of the bottom, and a drainage filter 10 is removable. It is set in. Reference numeral 11 denotes a cleaning filter provided in the drainage basin 8, which is arranged at an angle so as to partition one side of the drainage basin 8.
A filtration chamber 12 is formed between the drainage basin 8 and the side wall of the drainage basin 8. 13 is a partition wall that faces the cleaning filter 11 at a distance and forms a water channel 14; 15 is an electric heater disposed around the outer periphery of the filtration chamber 12; 16 is a cleaning pump connected to the filtration chamber 12; 17 is a A rod-shaped lower injection nozzle that is rotatably provided in a horizontal plane, has a plurality of injection ports 18, and has a water pipe 19.
It is connected to the cleaning pump 16 by. A lower tableware basket 20 is placed above the lower injection nozzle 17 and stores tableware 21, and is placed on a receiving portion 22 provided on the side wall of the washing tank 4.

Reference numeral 23 is disposed above the lower tableware basket 20 and has a washing channel and a rinsing channel separated from each other inside.
It is a rod-shaped upper injection nozzle rotatably provided in a horizontal plane, and has a plurality of cleaning injection ports 24 communicating with the washing channel and a plurality of rinsing injection ports 25 communicating with the rinsing channel. 26 is a water pipe communicating with the washing pump 16 and the washing channel of the upper injection nozzle 23; 27 is an upper tableware basket placed above the upper injection nozzle 23 for storing the tableware 21, and is placed on the receiving portion 22; . 28 is a drain pipe connected to the leftover food receiving section 9 via a drain pump 29; 30 has one end connected to a water supply (not shown) and the other end communicates with the rinsing channel of the upper injection nozzle 23 via a solenoid valve 31; 32 is a drying heater installed between the inner wall of the main body 1 and the cleaning tank 4;
is a blower driven by a motor 34; 35 is an outlet side temperature sensor placed in the steam vent hole 5 to detect the temperature of the steam discharged from the cleaning tank 4; 36 is a temperature sensor placed in the intake hole 7 to detect the temperature of the steam discharged from the drying heater 32 An inlet-side temperature sensor that detects the temperature of hot air; 37 is a detergent dispenser box in which detergent is stored and the lower part opens to dispense the detergent during predetermined processing; 38 is an intake port provided at the top of the main body 1; 39 is an exhaust port as well. , 40 is door 3
This is the drying end light installed in the drying end light.

A conventional dishwasher is constructed as described above, and after opening the door 3, pulling out the upper and lower dish baskets 27, 20, and setting the tableware 21 in the dish baskets 27, 20, the door 3 is opened. By closing and operating the solenoid valve 31,
Tap water passes through the water supply pipe 30, jets out from the rinse jet port 25 of the upper jet nozzle 23, falls, and is stored in the drainage basin 8. Next, when the cleaning pump 16 is operated, the cleaning water in the drainage basin 8 is sent through the water pipe 26 to the cleaning channel of the upper injection nozzle 23, and is also sent through the water pipe 19 to the lower injection nozzle 17, respectively. Cleaning injection port 24 and injection port 1
It is injected from 8. Then, the upper and lower spray nozzles 23, 17 are rotated by the spray force, and the tableware 21 is prewashed.

[0005] When the pre-washing is completed, the drain pump 29 is activated and the water in the drain sump 8 is discharged to the outside through the drain pipe 28. At this time, the leftover food washed away from the tableware 21 adheres to the cleaning filter 11 while the cleaning pump 16 is operating, but when moving to the drainage process, it moves to the drainage receiving part 9,
It is collected by the drainage filter 10. Next, water is supplied through the water supply pipe 30, detergent is introduced from the detergent input box 37, and the cleaning pump 16 is operated to perform cleaning. In addition,
In this case, in order to increase cleaning efficiency, an electric heater (not shown) is turned on and off to raise and maintain the water temperature. Furthermore, the drain pump 29
Activate to drain water.

[0006] Next, water is supplied from the water supply pipe 30, and the washing water is circulated again by the washing pump 16 to rinse the tableware 21, and after being circulated for a predetermined time, it is drained. This process is repeated several times to form a rinsing process. When this process is completed, the water supply pipe 30
The water supplied from the rinsing outlet 25 is injected and drained, resulting in a final rinsing step. Finally, in the drying process, the blower 33 and the drying heater 32 are operated to draw in outside air from the intake port 38 of the main body 1, warm it with the drying heater 32, and then blow it into the cleaning tank 4 from the intake hole 7. . In this way, the water in the wet tableware 21 is evaporated in the final rinsing process, and this steam is discharged to the outside through the steam vent hole 5 and the exhaust port 39. Then, the inlet side temperature sensor 36 and the outlet side temperature sensor 35 detect the temperature of the intake hole 7 and the steam vent hole 5, respectively, and when the difference in these detected temperatures becomes small and constant, the drying is completed and the drying end light is turned on. 40 lights up, and the blower 33 and drying heater 32 stop. After that, the door 3 is opened and the tableware 21 is taken out, and the wastewater filter 10 is further discarded and cleaned, and the drainage filter 10 is set again.

[0007]

[Problems to be Solved by the Invention] In the conventional dishwasher as described above, the leftover food adhering to the washing filter 11 during the washing process is transferred to the draining process and the water flow is changed from a circulating water flow to a drain flow. Since the waste water is used and moved to the drainage receiving part 9, there is a problem in that fine food debris that has bitten into the cleaning filter 11 remains without being washed away, reducing the performance of the cleaning pump 16.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a dishwasher which can eliminate clogging of the washing filter and which can be washed with clean washing water. With the goal.

[0009]

[Means for Solving the Problems] A dishwasher according to the present invention has a branch pipe branched from a drain pipe on the discharge side of a drain pump, which opens at a position facing a filter for cleaning a drain basin. be.

[0010] Furthermore, in the above-mentioned apparatus, a branching filter having a finer mesh than the cleaning filter is provided at the branch part of the branch pipe.

[0011]

[Function] In this invention, the branch pipe from the drain pipe on the discharge side of the drain pump is opened into the drainage basin, so a part of the drainage water is spouted into the drainage basin, and the flow is in the opposite direction to the circulating water flow during cleaning. Form a water stream.

[0012] Furthermore, since a diversion filter with a finer mesh than the cleaning filter is provided at the branch part of the branch pipe,
The wastewater that is ejected into the drainage basin is clean, and leftover food adhering to the cleaning filter is not sucked into the cleaning pump.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway front view showing an embodiment of the present invention. In the figure, 45 is a branch pipe branched from the drain pipe 28 on the discharge side of the drain pump 29, and is connected to the filtration chamber 12 of the drainage basin 8, and its opening is connected to the cleaning filter 1.
It is placed in a position opposite to 1. 46 is branch pipe 45
The mesh is finer than that of the cleaning filter 11.

In the dishwasher configured as described above, the washing operation is as described above, but when entering the draining process, a portion of the wastewater flowing through the drain pipe 28 passes through the branch pipe 45 and is filtered. Spouts into chamber 12. This jet flow is the cleaning pump 1
The circulation flow by 6 is in the opposite direction, and the cleaning filter 11
Wash off any leftover food that has adhered to it. The washed-off leftover food enters the drainage water again and is flushed from the leftover food receiving part 9 to the drain pipe 28.

[0015] Residues in the waste water diverted to the branch pipe 45 are collected by the fine mesh diversion filter 46, so that
The waste water spouted into the filtration chamber 12 becomes clean. Therefore, the leftover food adhering to the cleaning filter 11 will not be sucked into the cleaning pump 16 and recirculated, allowing clean cleaning. In addition, since the diversion filter 46 is constantly washed with waste water, it will not become clogged.

[0016]

[Effects of the Invention] As explained above, in this invention, the branch pipe from the drain pipe on the discharge side of the drain pump is opened at a position opposite to the filter for cleaning the drain pool, so that a part of the waste water flows into the drain pool. This creates a water flow in the opposite direction to the circulating water flow during cleaning, which has the effect of flushing away leftovers adhering to the cleaning filter and preventing a decrease in the performance of the cleaning pump.

[0017] Furthermore, since a diversion filter with a finer mesh than the cleaning filter is provided at the branch part of the branch pipe,
The wastewater injected into the drainage basin is clean, and the leftover food adhering to the cleaning filter is not sucked into the cleaning pump, resulting in clean cleaning.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a dishwasher according to the present invention.

FIG. 2 is a partially cutaway front view showing a conventional dishwasher.

FIG. 3 is a longitudinal side view of FIG. 2;

[Explanation of symbols]

4 Washing tank 8 Drainage basin 11 Cleaning filter 16 Washing pump 17 Lower injection nozzle 19 Water pipe 21 Tableware 23 Upper injection nozzle 26 Water pipe 28 Drain pipe 29 Drain pump 45 Branch pipe 46 Diversion filter

Claims (2)

[Claims] 1. A spray nozzle for spraying washing water onto tableware stored in a washing tank; a drainage basin provided at the bottom of the washing tank for storing washing water; and a drainage basin connected to the drainage basin for storing the washing water. a washing pump that supplies water to the injection nozzle via a washing filter, and a drain pipe connected to the drainage pool via the drain pump, from the drain pipe on the discharge side of the drain pump. A dishwasher characterized by comprising a branch pipe that is branched and opens at a position facing the washing filter in the drainage basin. 2. The dishwasher according to claim 1, wherein a diversion filter is provided at a branch between the drain pipe and the branch pipe, and the mesh of the diversion filter is made finer than the mesh of the washing filter.