JPH10225417A - Tableware washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the sucking of air bubbles in a water supply pump and to reduce performance deterioration an a fault owing to them by fitting filters in the lower part of a washing tank to be attachable/detachable and also fitting a filter which exists closely to a water supply port to which the water supply pump is connected to cover the water supply port. SOLUTION: The first filter 5 is arranged in the lower part of the washing tank 3 so as to cover the whole surface of a water storing part 4 and also to be attachable/detachable, inclination is executed downwards from an opening part disposed in an almost center part and a recessed part 7 is formed. The second filter 8 is inserted to the recessed part 7 of the first filter so as to be attachable/detachable. The third filter 16 is attachaly/detachably disposed so as to exist closely to the water supply port 10 to which the water supply pump 15 is connected and to cover the water supply port 10. Therefore, dirt water including refuses after washing tableware is transmitted to the water storing part 4 after collecting the refuses by the first and the second filters 5 and 8 and, then, supplied to the water supply port 10. At this time, even a small quantity of remaining refuses are collected by the third filter 16 so that pure washing water is normally ejected from a nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher in which the performance of a water pump for washing water is prevented.

[0002]

2. Description of the Related Art Conventionally, a dishwasher is disclosed in
As shown in JP-A-6-106632, a funnel-shaped receiver is provided at the lower part of the cleaning tank, and a primary filter is detachably provided on the receiver, and a secondary filter is provided on the outlet side of the receiver.
A water supply port of the washing pump is provided at a position away from the secondary filter. Then, the washing water from which the dishes are washed is removed by a primary filter to remove coarse residues and enters a receiver, and a small filter is removed by a secondary filter and is suctioned by a washing pump.

[0003]

In the dishwasher constructed as described above, the residue in the washing water is removed by the primary filter and the secondary filter, but a large amount of the washing water passes through the secondary filter. Bubbles are generated, a part of which is sucked into the washing pump and becomes a so-called foaming state,
The cleaning pump was idle and caused a failure.

[0004] The present invention has been made to solve the above problems, and reduces the suction of air bubbles by a water supply pump.
It is an object of the present invention to obtain a dishwasher capable of reducing performance degradation and failure of a water pump due to bubbles.

[0005]

[Means for Solving the Problems]

(1) The dishwasher according to the present invention is provided with a detachable filter at the lower part of the washing tank, and is provided below the filter and close to a water feed port connected to a water feed pump for sending washing water to a nozzle. In addition, a filter is provided so as to cover the water supply port. (2) The filter provided in the vicinity of the water supply port in (1) above has a plurality of water supply ports provided below the surface facing the water supply port.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a longitudinal sectional view schematically showing a dishwasher according to Embodiment 1 of the present invention, and FIG. 2 is an AA sectional view of FIG. In both figures, 1 is a box-shaped main body having an opening on the top surface, and 2 is a door which is openably and closably attached to the opening of the main body via a hinge. Reference numeral 3 denotes a washing tank having an opening on the top surface and installed in the main body 1, and a water storage unit 4 is provided at a lower part.

[0007] Reference numeral 5 denotes a first filter detachably provided at the lower portion of the washing tank 3 so as to cover the entire surface of the water storage section 4 and is made of, for example, a wire mesh having a large number of small holes, punching metal, etc. Inclined downward from the opening provided,
A recess 7 is formed. Reference numeral 8 denotes a second filter removably inserted into the concave portion 7 of the first filter 5, and includes a wire mesh,
It is formed of a punching metal or the like. In addition,
This second filter 8 may be omitted. Reference numeral 9 denotes a heater provided in the water storage section 4 below the first filter 5.

Reference numeral 11 denotes a water supply pipe provided in the washing tank 3 above the first filter 5, and reference numeral 12 denotes a rotating body having a plurality of nozzles, which is connected to the water supply pipe 11. Reference numeral 13 denotes a first water supply pipe having one end connected to a water supply port 10 provided at a lower portion of the washing tank 3 and the other end connected to a water supply pump 15, and 14 has one end connected to the water supply pipe 11 and the other end has water supply. This is a second water pipe connected to the pump 15. Reference numeral 16 denotes a third filter which is provided near the water supply port 10 and is detachably provided so as to cover the water supply port 10. Reference numeral 22 denotes a cleaning water supply port that opens into the cleaning tank 3, 23 denotes a drain valve 24, and the cleaning tank 3
Is a pipe connected to a drain port provided at the bottom of the container. Reference numeral 25 denotes a tableware basket which is housed in the washing tank 3 so as to be freely taken in and out.

As shown in FIG. 3, the third filter 16 has a mounting piece 1 attached to the side wall and the bottom of the washing tank 3 vertically.
7 and 18 so as to cover the whole of the water supply port 10. As shown in FIG. 4A, a wire mesh 19 or FIG. (B)
As shown in FIG. 1, a plurality of water passages 21 are formed by punching metal 20. Further, as shown in FIG. 4C, the main body may be formed of stainless steel, synthetic resin, or the like, and the lower part of the front plate may be formed in a comb shape to form the water inlet 21. By forming in this manner, the front plate can be directly brought into contact with the bottom of the washing tank 3 and attached, without the lower attachment piece 18.

Next, the operation of the present embodiment configured as described above will be described. First, the door 2 is opened, and dirty tableware is stored in the tableware basket 25. Of course, after the tableware basket 25 is taken out of the washing tank 3 and the tableware is stored, it may be stored again in the washing tank 3. Then, turn on the power and set the drain valve 24
Is closed, a water supply valve (not shown) is opened, and cleaning water is supplied from the cleaning water supply port 22 into the cleaning tank 3 through a water pipe connected to a water tap. When a predetermined amount of washing water is stored in the water storage section 4, the water supply valve is closed.

Next, the heater 9 is energized to raise the temperature of the washing water in the water storage section 4 to a desired temperature. Then, water pump 1
5 to supply water to the water supply pipe 1 with the washing water in the water storage section 4 which has been heated and heated.
1, washing water is sprayed from a nozzle, and the rotating body 12 is rotated by the reaction force to wash the dishes in the dish basket 25. Then, the washing water injected into the washing tank 3 drops and is again stored in the water storage unit 4, is pumped by the water supply pump 15 and is ejected from the nozzle, and repeats this circulation.
During this time, the residue contained in the washing water is removed by the first and second filters 5 and 8 and the third filter 16 provided in the water supply port 10.
Is collected and removed.

When a predetermined time has elapsed, the power supply to the heater 9 and the water supply pump 15 is stopped, and then the drain valve 24 of the drain pipe 23 is opened. Thereby, the sewage in the water storage part 4, the water pump 15, and the first and second water pipes 13, 14 is discharged to the outside from the drain pipe 23. When all the drainage is completed, the drainage valve 24 is closed and the water supply valve is opened to supply the cleaning water to the cleaning tank 3. Thereafter, the tableware is rinsed by the same operation as the above-described cleaning step, and after the rinsing for a predetermined period of time, drainage is performed again. This rinsing and draining is usually repeated several times. During rinsing,
The heating may be performed with warm water by energizing the heater 9.

After the rinsing and draining of the predetermined number of times are completed, the heater 9 and the blower (not shown) are energized with the water supply valve of the washing water supply pipe closed, and the blower is driven to clean from the air inlet. Air is sent into the tank 3. This air is heated by the heater 9 to become warm air, and enters into a drying process for the tableware and the entire inside of the washing tank 3. After a lapse of a predetermined time, the power supply to the heater 9 and the blower is stopped, and the drying process ends. Thereby, all the dishwashing and drying steps are completed. The hot air that has dried the dishes and the inside of the washing tank 3 is discharged from an exhaust port provided on the front face of the main body 1 and the like.

When the dishes are cooled, the door 2 is opened and the dishes are taken out. Further, the second filter 8 is taken out and washed, and the residue is washed away. Furthermore, if any residue is attached to the first filter 5, it is removed and washed. When the residue is attached to the third filter 16,
Similarly, remove and wash.

According to the present invention, the wastewater containing the residue obtained by washing the dishes is collected by the first and second filters 5 and 8 and sent to the water storage section 4, and further the first water pipe is provided. 13
Is sent to the water supply pump 15. At this time, even if there is a slight residue, the residue is collected by the third filter 16, so that clean washing water can always be jetted from the nozzle. Further, for example, even if the user forgets to attach the first filter 5, the residue is collected by the third filter 16, so that clean washing water passes through the water supply pump 15, thereby greatly reducing the occurrence of failures. can do.

The third filter 16 is provided so as to be close to the water supply port and to cover the water supply port 10, and has a lower portion of a front surface (a surface facing the water supply port 10) through which washing water is passed by a wire mesh 19. Since the water port 21 is formed, most of the bubbles generated when passing through the first and second filters 5 and 8 rise in the washing water before reaching the third filter 13,
It hardly exists near the bottom of the cleaning tank 3. For this reason, the cleaning water sucked into the water supply port 10 from the lower part of the third filter 19 contains almost no air bubbles, and therefore, the water is generated when the water supply pump 15 passes through the third filter 19. Only small bubbles are sucked in. For this reason, there is no danger that the water pump 15 will be in a bubble-bubble state and run idle, and the occurrence of failures due to this can be greatly reduced.

Embodiment 2 FIG. 5 is a perspective view showing the overall configuration of Embodiment 2 of the present invention.
FIG. 6 is a schematic longitudinal sectional view of FIG. The same or corresponding portions as in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the figure, reference numeral 31 denotes a sink, on the upper surface of which a sink 32 having a drain 33 is provided, and an opening 34 is provided alongside the sink 32. Reference numeral 35 denotes a door that opens and closes the opening 34, and is attached to the upper surface of the sink 31 via a hinge 36. 3
Reference numeral 7 denotes an operation unit of the dishwasher 1a provided on the front surface of the sink 31, and reference numeral 38 denotes an air intake during the drying process.

Reference numeral 1 denotes a main body of the dishwasher 1a which also serves as the washing tank 3, and is housed in a sink 31 and attached to an opening 34. As in the first embodiment, first, second, and third filters 5, 8, and 16, a heater 9, a water supply pipe 11, a rotating body 12 having a nozzle, and the like are housed in the main body 1. However, the water supply pump 15 is installed outside the main body 1, and is connected to the water supply port 10 of the washing tank 3 by the first water supply pipe 13 and to the water supply pipe 11 by the second water supply pipe 14. ing.

Since the operation of the dishwasher is the same as that of the first embodiment, the description is omitted. By the way, conventionally, since the dishwasher and the sink are manufactured and sold separately, the work in the sink and the work by the dishwasher are:
Although both operations are related to each other, they are installed at different positions. Therefore, there is a disadvantage that the operation procedure is wasteful and the operation procedure is bad. In the present embodiment, since the dishwasher is integrated into the sink, the above-mentioned inconvenience can be solved and a convenient sink and dishwasher can be obtained.

In the first and second embodiments, the case where the illustrated dishwasher is provided with the third filter 16 according to the present invention is shown, but the present invention is not limited to this.
The present invention can be applied to a dishwasher having another structure and another spraying method of washing water. The third filter 16
Is not limited to the illustrated one, and can be changed as appropriate. Further, the sink and the dishwasher in the second embodiment are not limited to those shown in the drawings, but can be changed as appropriate.

[0021]

【The invention's effect】

(1) In a dishwasher according to the present invention, a filter is detachably provided at a lower portion of a washing tank, and a filter is provided below the filter and is close to a water supply port connected to a water supply pump that sends cleaning water to a nozzle, Further, since the filter is provided so as to cover the water supply port, the residue in the washing water can be reliably collected by the plurality of filters. For this reason, tableware can be washed with clean washing water. Further, since the filter is provided so as to be close to and cover the water supply port of the circulating cleaning water, suction of air bubbles into the water supply pump is reduced,
It is possible to reduce the performance of the water pump and the occurrence of failure. (2) Since the filter provided in the vicinity of the water supply port of the above (1) has a plurality of water supply ports at a lower portion of a surface facing the water supply port, suction of bubbles into the water supply pump can be further reduced. Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a third filter of FIG. 1;

FIG. 4 is a perspective view showing an example of a third filter.

FIG. 5 is a perspective view of a second embodiment of the present invention.

FIG. 6 is a schematic longitudinal sectional view of FIG. 5;

[Explanation of symbols]

1 body, 2 doors, 3 washing tanks, 4 water storage section, 5 first
Filter, 8 second filter, 9 heater, 10
Water supply port, 11 water supply pipe, 12 rotating body, 15 water supply pump, 16 third filter, 21 water supply port, 25 tableware basket, 31 sink, 32 sink part.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Taihei Hasegawa 1728-1 Komaeda, Hanazono-cho, Osato-gun, Saitama Prefecture Mitsubishi Electric Home Equipment Co., Ltd.

Claims (2)

[Claims] 1. A dishwasher for storing dishware in which dishware is stored in a washing tub and spraying washing water from a nozzle to wash the dishes, wherein a filter is detachably mounted on a lower portion of the washing tub. A dishwasher, which is provided below the filter and is provided with a filter close to a water supply port connected to a water supply pump for supplying washing water to the nozzle and covering the water supply port. . 2. The dishwasher according to claim 1, wherein the filter provided adjacent to the water supply port has a plurality of water supply ports provided below a surface facing the water supply port.