JPH06133912A - Tableware washing machine - Google Patents

Abstract

PURPOSE:To provide a tableware washing machine improved in the easiness in manufacturing and maintenance works and the durability by configuring a water exhaust pump. CONSTITUTION:This tableware washing machine comprises a tableware cage 2 for accommodation of dishes, etc., in a washing chamber 1, a washing pump 4 to pressurize and discharge the washing water a washing nozzle 5 to spout the washing water pressurized, a water exhaust hole 3 to store the washing water at the bottom of the washing chamber, a filter 7 to collect residual food, and a water exhaust pump 10 to exhaust the water to outside the machine, wherein the pump 10 is mounted removably on the outer side face of the water exhaust hole 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing by injecting washing water, and more particularly, to improve workability of manufacturing and maintenance and durability thereof by mounting a drainage pump.

[0002]

2. Description of the Related Art An operating method for a general conventional dishwasher will be described below with reference to FIG. Cleaning tank 1
When the tableware is housed in the tableware basket 2 and the detergent is put in to start the operation, there is a water supply step of supplying a predetermined amount of cleaning water from the water supply device to the cleaning tank 1 and the drainage port 3 at the bottom thereof. A main washing step is performed in which the washing water pressurized by the washing pump 4 is sprayed from the washing nozzle 5 together with the detergent.
The washing water is jetted vertically or obliquely upward from the opening of the washing nozzle 5 and collides with the dishes. Further, the cleaning nozzle 5 rotates substantially horizontally by the reaction force of this jet. at the same time,
The heater 6 is energized to heat the wash water and the dishes to a first predetermined temperature (about 60 ° C). In this main washing step, stains on the dishes are washed by the action of the impact of the washing water, detergent, heat and the like. Of these residual foods, coarse ones (dirt attached to the dishes is also referred to as residual foods) are collected by the filter 7, and fine ones circulate in the circulation path of washing water indicated by the arrow in the figure.

After the main washing process for a predetermined time, the draining process starts. In this process, cleaning water containing dirt washed off from dishes and the like is discharged from the drainage port 3 through the drainage suction hose 10 to the outside of the machine by the drainage pump 8.

Subsequently, a water supply step for newly supplying washing water, a rinsing step for rinsing dishes contaminated with detergent and leftovers by spraying the washing water from the washing nozzle 5, and a draining step are consecutive. It was repeated 4 times to complete the washing process. In particular, the final rinsing step is a step of energizing the heater 6 to heat the wash water and the dishes to a second predetermined temperature (about 70 ° C.) in order to obtain a predetermined drying performance after the washing step. Also called a process. A control device 9 controls the operation of the cleaning pump 4, the drainage pump 8 and the like.

[0005]

However, in the above dishwasher, the drainage pump 8 is connected to the drainage port 3 provided at the bottom of the cleaning tank 1 by the drainage suction hose 10.
Since the connection portions at both ends of the drainage suction hose 10 are structured to prevent water leakage by the hose band, there are problems that the assembling work is complicated and the number of parts is large.
Further, there is a problem that the structure has low durability and reliability, in which dirt may be accumulated on the step of the connection portion of the drainage suction hose 10 and on the inner surface of the pipeline to reduce the drainage capacity.

If the user operates the drainage pump 8 without mounting the filter 7, a large residual food may be sucked into the body of the drainage pump, and the impeller may not rotate and the drainage may become impossible. . As the maintenance work at this time, it is necessary to discharge the wash water once out of the machine through a separately provided drain hole, invert the entire product, remove the drainage pump 8 from the drainage suction hose 10, and then disassemble the drainage pump main body. However, there is a problem that workability is extremely low.

In addition, the filter 7 is provided with an opening having a large diameter in order to discharge the leftover food such as rice grains, and hard foreign matters such as glass tableware, pottery, porcelain and broken pieces of shells are drained from this portion. There was a problem that it was sent to the pump 8 and accumulated around the impeller, making it impossible to rotate.

SUMMARY OF THE INVENTION The first object of the present invention is to provide a dishwasher which has a simple structure for mounting a drainage pump, has a small number of parts, and has high durability and reliability. To do.

A second object of the present invention is to provide a dishwasher in which the inside of the main body of the drainage pump can be easily cleaned and maintenance work can be easily performed.

It is a third object of the present invention to provide a dishwasher with improved durability and reliability by preventing foreign matter from being sent to the drainage pump.

[0011]

In order to achieve the above first object, a dishwasher of the present invention comprises a washing tank, a dish basket for storing dishes in the washing tank, and pressurizing washing water. A cleaning pump that discharges, a cleaning nozzle that sprays pressurized cleaning water, a filter that collects residual food, a drainage pump that discharges the cleaning water outside the machine, and a cleaning water reservoir at the bottom of the cleaning tank. And a drainage port for guiding the wash water to the drainage pump, and the drainage pump is detachably attached to the outer surface of the drainage port.

In order to achieve the second object, the dishwasher of the present invention comprises a washing tank, a dish basket for storing dishes in the washing tank, and a washing pump for pressurizing and discharging washing water. A washing nozzle for injecting pressurized washing water, a filter for collecting residual food, a drainage pump for discharging the washing water out of the machine, a washing pump for storing the washing water at the bottom of the washing tank, and a drainage pump And a drainage port for guiding wash water, and a cover that covers the opening on the front surface of the main body of the drainage pump and forms a suction is detachably attached from the inside of the drainage port.

To achieve the third object, the dishwasher of the present invention comprises a washing tank, a dish basket for storing dishes in the washing tank, and a washing pump for pressurizing and discharging washing water. A washing nozzle for injecting pressurized washing water, a filter for collecting residual food, a drainage pump for discharging the washing water out of the machine, a washing pump for storing the washing water at the bottom of the washing tank, and a drainage pump A drainage port for guiding wash water and a water guide pipe for guiding the wash water to the suction of the drainage pump, the water guide pipe being formed integrally with the cover of the drainage pump in a substantially vertical direction, and the lower part of the water pipe. The partition plate is provided above the inflow port and has an opening.

[0014]

With the first configuration of the dishwasher of the present invention,
The drainage pump is detachably attached to the outer surface of the drainage pump, which is attached to the opening provided in the drainage port, does not require a drainage suction hose and a hose band, and has a small number of parts. At the same time there is no place for dirt to accumulate.

Further, according to the above-mentioned second construction, the cover for covering the opening on the front surface of the main body of the drainage pump and the impeller and forming the suction is detachably attached from the inside of the drainage port, and the entire drainage pump is removed. Without removing the cover from the inside of the drainage port, you can easily remove the residual food sucked into the drainage pump body.

Further, according to the above-mentioned third structure, the water guiding pipe for guiding the washing water to the suction of the drainage pump is formed in a substantially vertical direction, and the partition plate having the opening portion above the inflow port of this water guiding pipe. As a result, the washing water is bent and sent to the suction, and even if the washing water contains debris, it can be easily confirmed by separating it from the water stream and accumulating at the bottom of the drainage port. Do not get into the pump.

[0017]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below. The basic configuration of the cleaning nozzle 5, the tableware basket 2 and the like and the operating method thereof are the same as those of the conventional example, and the drawings are shared and the description thereof is omitted. In this embodiment, the drainage pump 10 and the drainage port 11 shown in FIG. 1 are different, and the assembling property and the durability reliability are improved.

In the figure, 12 is an impeller, 13 is a main body of a drainage pump, 14 is a cover forming the front surface of the main body, 1
Reference numeral 5 is a suction for sucking the washing water. Reference numeral 16 is a seal member made of an elastic body, and by fixing the main body 13 to the drain port 11 with screws, the drain pump 10 can
1 is detachably fixed to the outer surface. Also,
As shown in FIG. 2, the drainage port 11 has an opening 17 for mounting the drainage pump 10, a boss 18 for mounting a screw, and a connection port 19 to the cleaning pump 4.

In the mounting work of the drainage pump 10, the sealing member 16 is compressed and fixed to obtain the sealing property with the drainage port 11, and the conventional complicated work of sealing with the hose band. Without needing
It can be manufactured at low cost with few parts. Next, in terms of durability and reliability, there is no unnecessary pipeline or step between the drainage port 11 and the drainage pump 10, and a structure in which contaminants do not accumulate.

As explained above, this drainage pump 10
Is an arrow A when completed as a single unit as shown in FIG.
It has a structure that can be attached and detached in any direction and is excellent in assembly workability. Moreover, it is highly reliable.

(Second Embodiment) The second embodiment of the present invention will be described below. The basic configuration and the operating method thereof are the same as those of the first embodiment, and although the drawings are shared and the description thereof is omitted, the drain port 11, the drain pump 10, and the cover 1 thereof.
4 differs in the configuration and the function in the following points.

As shown in FIG. 1, the cover 14 is bayonet-connected to the main body 13 of the drainage pump, and the handle 14
It is a structure that can be attached and detached by rotating a. Further, since a space that can be moved to detach the cover 14 is provided at the bottom of the drain port 11, the cover 14 can be removed from the inside of the drain port 11.

When the user operates without wearing the filter 7 and sucks a large residue or foreign matter into the main body, the impeller 12 does not rotate and the drainage becomes impossible, resulting in a failure.
When maintenance is required, the inner surface of the impeller 12 and the main body 13 is opened by removing the cover 14 from the inside of the drainage port 11, so that leftovers and foreign substances can be easily removed. Therefore, it is not necessary to disassemble the cover 14 and the main body 13 by removing the drainage pump 8 after discharging the wash water out of the machine as in the conventional case, and the maintenance work is very simple.

As the mounting structure of the cover 14, bayonet connection has been shown, but screw fitting, fixing with screws, etc. may be mentioned, but any structure may be used as long as it can be detached from the inside of the drainage port 11.

(Third Embodiment) A third embodiment of the present invention will be described below. The basic structure and the operating method thereof are the same as those in the first embodiment, and although the drawings are shared and the description thereof is omitted, as shown in FIG.
0 and the water guide pipe 20 and the partition plate 21 have different configurations and functions.

The water conduit 20 communicates with the suction 15 of the drainage pump 10 and is formed in a substantially vertical direction. Further, a partition plate 22 having an opening is provided above (upstream) the inflow port 21 of the water conduit 20. Therefore, the opening of the partition plate 22 and the water conduit 20 communicate with the cleaning tank 1 to the drainage pump 10. The partition plate 22 is located below the filter 7 and has an opening portion large enough to easily pass the leftovers that are large enough to pass through the filter 7.

In the drainage process, the wash water is sent from the drainage port 11 to the drainage pump 10 while bending as shown by the arrow in FIG. The residual food contained in the wash water is guided from the water conduit 20 to the drainage pump 10. On the other hand, since pieces of tableware having a large specific gravity are separated from the water flow of the washing water indicated by the arrow and accumulated on the bottom of the drainage port 11, they do not enter the drainage pump 10. In this way, the behavior of the residual food and the foreign matter in the cleaning water in the drainage process is different from that of the conventional one, and the rotation failure of the drainage pump 10 does not occur. Further, since hard foreign matter is not sucked in, the rotating parts and sealing parts such as the oil seal and the bearing are not worn, and the durability is excellent.

[0028]

As described above, the dishwasher of the present invention is provided with a washing tank, a dish basket for storing dishes in the washing tank, a washing pump for pressurizing and discharging washing water, and a pressurizing machine. A cleaning nozzle for injecting cleaning water, a filter for collecting leftovers, a drainage pump for discharging the cleaning water to the outside of the machine, a cleaning water pool at the bottom of the cleaning tank to store the cleaning water in the cleaning pump and the drainage pump. A drainage port for guiding, and the drainage pump is detachably attached to an outer surface of the drainage port, and a drainage suction hose and a hose band are not required, and the manufacturing cost is low.

The dishwasher of the present invention also includes a washing tank, a dish basket for storing dishes in the washing tank, a washing pump for pressurizing and discharging the washing water, and a jet of pressurized washing water. A cleaning nozzle, a filter for collecting leftover food, a drainage pump for discharging the cleaning water out of the machine, and a drainage port for storing the cleaning water at the bottom of the cleaning tank and guiding the cleaning water to the cleaning pump and the drainage pump. The cover that covers the opening on the front surface of the main body of the drainage pump and forms suction is detachably attached from the inside of the drainage port, and the main body can be removed by removing the cover without removing the entire drainage pump. It is possible to provide a dishwasher with excellent maintainability that can remove sucked residual food.

Further, the dishwasher of the present invention comprises a washing tank,
A dish basket for storing dishes in the washing tank, a washing pump for pressurizing and discharging the washing water, a washing nozzle for injecting the pressurized washing water, a filter for collecting leftovers, and washing water. A water conduit that includes a drainage pump that discharges to the outside of the machine, a drainage port that stores cleaning water at the bottom of the cleaning tank and guides the cleaning water to the cleaning pump and the drainage pump, and guides the cleaning water to the suction of the drainage pump. Is provided in a substantially vertical direction, and a partition plate having an opening is provided above the inflow port of the water guide pipe. It is possible to provide a highly durable dishwasher in which the contained pieces of tableware are separated from the water flow and are deposited on the bottom of the drainage port and do not enter the drainage pump.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a drainage pump and a drainage port of a dishwasher according to first and second embodiments of the present invention.

FIG. 2 is a front view showing a drainage port of the dishwasher.

FIG. 3 is an exploded sectional view showing a drainage pump and a drainage port of the dishwasher.

FIG. 4 is a sectional view showing a drainage pump and a drainage port of a dishwasher according to a third embodiment of the present invention.

FIG. 5 is a sectional view of a conventional dishwasher.

[Explanation of symbols]

 1 Washing tank 2 Dish basket 3 Drain port 4 Washing pump 5 Washing nozzle 6 Heater 7 Filter 10 Draining pump

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Hirai 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A washing tank, a dish basket for storing dishes in the washing tank, a washing pump for pressurizing and discharging the washing water, a washing nozzle for jetting the pressurized washing water, and a leftover dish. A filter for collecting, a drainage pump for discharging the cleaning water to the outside of the machine, a drainage port for storing the cleaning water at the bottom of the cleaning tank and guiding the cleaning water to the cleaning pump and the drainage pump, the drainage pump is A dishwasher that is detachably attached to the outer surface of the drainage port. 2. A washing tank, a dish basket for storing dishes in the washing tank, a washing pump for pressurizing and discharging the washing water, a washing nozzle for jetting the pressurized washing water, and a leftover dish. A filter for collecting, a drainage pump for discharging the cleaning water to the outside of the machine, and a drainage port for storing the cleaning water at the bottom of the cleaning tank and guiding the cleaning water to the cleaning pump and the drainage pump, The dishwasher in which the cover that covers the opening on the front of the main body and forms the suction is detachably attached from the inside of the drainage port. 3. A washing tank, a dish basket for storing dishes in the washing tank, a washing pump for pressurizing and discharging the washing water, a washing nozzle for jetting the pressurized washing water, and a leftover dish. A filter for collecting, a drainage pump for discharging the cleaning water to the outside of the machine, a drainage port for storing the cleaning water at the bottom of the cleaning tank and guiding the cleaning water to the cleaning pump and the drainage pump, and a suction of the drainage pump. And a water conduit for guiding the wash water, the water conduit being formed in a substantially vertical direction integrally with the cover of the drainage pump, and the partition having an opening located above the inlet at the lower part of the water conduit. A dishwasher with a plate.