JPH06205734A - Drainage device for dish washer - Google Patents

Abstract

PURPOSE:To improve the workability when the washing liquid is discharged from a washing liquid tank. CONSTITUTION:A washing liquid having washed dishes is stored in a washing liquid tank 5 below a washing chamber 2. The height of the washing liquid level is adjusted by an overflow pipe 7. The overflow pipe 7 is removably fitted at a drain port 18. A strainer 15 is erected from the drain port 18 inside the overflow pipe 7. The overflow pipe 7 can be independently extracted. When the overflow pipe 7 is extracted, a washing liquid is discharged to a drain pipe 17 through the holes 151 of the strainer 15. Even if garbages are accumulated at the bottom portion of the washing liquid tank 5, the height of the strainer 15 is sufficient, and the washing liquid can be quickly discharged. The garbages may be removed after the washing liquid is practically discharged, and the workability is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device of a dishwasher for injecting a washing liquid onto a dish having leftovers and the like attached thereto for washing.

[0002]

2. Description of the Related Art A general structure of a conventional dishwasher is shown in FIG. Such a configuration is, for example, the actual Kaihei 1-7.
It is equivalent to that disclosed in Japanese Patent No. 6759.

A cleaning liquid tank 100 is provided below a cleaning chamber for cleaning dishes and stores a cleaning liquid 101 therein. Cleaning liquid 1
01 is circulated and used, and rinse with clean rinse water is performed to remove the cleaning liquid adhering to the dishes.

The cleaning liquid 101 is discharged from the cleaning liquid tank 100 from the drain port 102 through the drain pipe 103.
An overflow pipe 104 is used to keep the height of the cleaning liquid 101 in the cleaning liquid tank 100 constant. The lower portion of the overflow pipe 104 seals the drain port 102 with a rubber plug 105. The upper opening of the overflow pipe 104 serves as an overflow port 106, and the overflow liquid 107 from the surface of the cleaning liquid 101 is discharged.

After the above-mentioned cleaning work is completed, it is necessary to drain all the cleaning liquid 101 from the cleaning liquid tank 100. In such a case, the overflow pipe 10
4 is pulled out from the drainage port 102. When the overflow pipe 104 is removed, the cleaning liquid 101 directly flows into the drain port 102 as the discharge liquid 108 and is discharged via the drain pipe 103.

[0006]

In the conventional drainage device as shown in FIG. 6, the overflow pipe 104 limits the liquid level of the cleaning liquid 101 in the cleaning liquid tank 100, and the overflow pipe 104 is pulled out. The cleaning liquid 101 is configured to be discharged from the drain port 102. However, the cleaning liquid 101 is mixed with the residual food 109 removed from the dishes during the dish washing. Leftover 10
Among the nine, in particular, solids such as lemon, ham, and konjac have a larger specific gravity than the cleaning liquid 101, and the cleaning liquid tank 10
Accumulate at the bottom of 0. With the leftover 109 accumulated on the bottom,
When the overflow pipe 104 is pulled out, the residual food 109 is also moved toward the drainage port 102 together with the drainage liquid 108.
02 will be blocked. The cleaning liquid 101 also contains dust such as tissue paper in a floating state, and clogs the drain port 102 together with the residual food 109. If the drainage port 102 is clogged, it becomes difficult to discharge the cleaning liquid 101. Therefore, it is necessary for an operator to insert a hand into the cleaning liquid tank 100 to remove the clogging. Moreover, even if the clogging is removed once, it will be clogged again immediately, so it is necessary to repeat the clogging removal work.
Such work needs to be performed by inserting the arm into the remaining cleaning liquid 101, and the workability is poor.

The inventor of the present invention, in Japanese Utility Model Application Laid-Open No. 59-40071, has a structure in which the overflow pipe has a double pipe structure and the dirty cleaning liquid having a low temperature is discharged first to keep the cleaning liquid in the cleaning liquid tank clean. Disclosure. With such a configuration, although the cleaning performance and operability while using the dishwasher are improved, when cleaning after using the washing machine,
The above-mentioned residual foods are clogged in the drainage port, which causes a problem of poor drainage.

It is an object of the present invention to provide a drainage device for a dishwasher, in which drainage failure due to residual food hardly occurs and the residual food can be easily removed.

[0009]

According to the present invention, the cleaning liquid is sprayed on the dishes 3 in the cleaning chamber 2 for cleaning, and the cleaning liquid after cleaning is stored in the cleaning liquid tank 5 provided below the cleaning chamber 2 and stored. In a drainage device of a dishwasher that discharges the thus-cleaned cleaning liquid from a drainage port 18 provided in the lower part of the cleaning liquid tank 5, the columnar is erected from the drainage port 18 to prevent permeation of the leftover food on the outer peripheral surface, A strainer 15 having a hole 151 for allowing permeation and a lower portion of which is attachable to and detachable from the drain port 18,
5 is a drainage device for a dishwasher, which includes an overflow pipe 7 that is loosely inserted on the outer side of 5 and has an overflow port 71 provided at the upper part.

[0010]

According to the present invention, the drainage device of the dishwasher includes:
A strainer 15 and an overflow pipe 7 are included. The strainer 15 is erected in a columnar shape from a drain port 18 provided in the lower portion of the cleaning liquid tank 5. A hole 151 is formed on the outer peripheral surface of the strainer 15 to prevent the permeation of the residual food and to allow the cleaning liquid to permeate. The cleaning liquid tank 5 is provided below the cleaning chamber 2 in which the cleaning liquid is sprayed onto the dishes 3 to clean them. The cleaning liquid after the cleaning is stored in the cleaning liquid tank 5. The level of the stored cleaning liquid is adjusted by the overflow pipe 7.
The lower portion of the overflow pipe 7 can be attached to and detached from the drain port 18. The overflow pipe 7 is loosely inserted outside the strainer 15, and an overflow port 71 is provided in the upper portion. When the liquid level of the cleaning liquid becomes higher than that of the overflow pipe 7, the cleaning liquid is discharged from the overflow port 71, and the liquid level is limited to the height of the overflow pipe 7.

When all the cleaning liquid in the cleaning liquid tank 5 is discharged, the overflow pipe 7 is pulled out from the drain port 18.
The overflow pipe 7 is a separate body from the strainer 15,
Since the strainer 15 is loosely inserted outside the strainer 15, the strainer 15 can be easily pulled out independently with the strainer 15 left. The cleaning liquid located below the overflow port 71 when the overflow pipe 7 is attached passes through the hole 151 of the strainer 15 and is discharged. Since the hole 151 of the strainer 15 blocks the permeation of the residual food and allows the permeation of the cleaning liquid, the residual food is not discharged but remains in the cleaning liquid tank 5. Since the strainer 15 is erected in a column shape from the drainage port 18 and the hole 151 is formed in the outer peripheral surface thereof, the cleaning liquid can be discharged from a position higher than the bottom of the cleaning liquid tank 5. Therefore, the residual food accumulated on the bottom of the cleaning liquid tank 5 is discharged from the drain port 1 when the cleaning liquid is discharged.
Even if the hole 151 of the strainer 15 is closed by moving to the vicinity of 8, the cleaning liquid can be discharged from the upper hole 151. The removal of the clogged residual food can be performed quickly with the cleaning liquid being substantially discharged.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a construction related to a drainage device of a dishwasher according to an embodiment of the present invention. In the figure, a washing room 2 is formed in a casing 1 of a dishwasher to wash dishes 3. At the front opening of the cleaning chamber 2, a door 4 is provided on the front side of FIG. Below the washing room 2,
A cleaning liquid tank 5 is provided. A side dish tank 6 is provided on the side of the washing liquid tank 5.

The cleaning liquid is stored in the cleaning liquid tank 5, and the height of the liquid surface is adjusted by the overflow pipe 7. Above and below the cleaning chamber 2, an upper nozzle member 8 and a lower nozzle member 9 for spraying the cleaning liquid onto the dishes 3 are provided, respectively. Adjacent to the upper nozzle member 8 and the lower nozzle member 9, an upper rinse water nozzle member 10 and a lower rinse water nozzle member 11 for rinsing the dishes 3 are also provided, respectively.

A lid 12 that can be opened and closed is provided on the residual food tank 6. Between the cleaning chamber 2 and the lower nozzle member 9 and the lower rinse water nozzle member 11, dampers 141 to 144 that are angularly displaceable around the shafts 131 to 134 are provided. The dampers 141 to 144 are in an open state at a substantially vertical position, and are in a closed state at a substantially horizontal position. When the dampers 141 to 144 are open, the lid 12 is closed and the damper 14 is closed.
When 1 to 144 are in the closed state, the lid 12 is in the open state.

The upper opening of the overflow pipe 7 serves as an overflow port 71 for adjusting the level of the cleaning liquid in the cleaning liquid tank 5. The overflow pipe 7 is loosely inserted outside the strainer 15. The strainer 15 is formed with a hole 151 having a predetermined shape that blocks the passage of the residual food and allows the passage of the cleaning liquid. A drainer container 16 formed of, for example, a perforated plate such as punching metal is housed in the residual food tank 6 in a removable manner. The draining container 16 receives the residual food and allows water to pass through. The permeated water is discharged through the drain pipe 17. A drain port 18 connected to the drain pipe 17 is also provided at the bottom of the cleaning liquid tank 5. Strainer 15
Is erected on the drain port 18. The overflow pipe 7 is loosely inserted outside the strainer 15 and is attachable to and detachable from the drain port 18. The overflow pipe 7 has no opening except for the overflow port 71 at the upper part, and is attached to the drainage port 18 when the drainage port 1 is installed.
Seal 8

The cleaning liquid stored in the cleaning liquid tank 5 is pressurized by the cleaning liquid pump MP1 and sent to the upper nozzle member 8 and the lower nozzle member 9 via the cleaning liquid pipe 19.
Cleaning liquid nozzle holes 91 and 92 are provided in the upper nozzle member 8 and the lower nozzle member 9, respectively, and the cleaning liquid is sprayed toward the dishes 3. Top rinse water nozzle member 10
The lower rinse water nozzle member 11 has a rinse water conduit 2
Rinsing water is sent from the rinsing water pump MP2 via 0. The upper rinse water nozzle member 10 and the lower rinse water nozzle member 11 are provided with rinse water nozzle holes 21 and 22, respectively, and spray the rinse water toward the tableware 3.

The opening and closing of the lid 12 and the dampers 141 to 144 are driven by a motor 23. A pulley 24 is attached to the rotary shaft of the motor 23, and a pulley 26 attached to the shaft 133 of the damper 143 via a belt 25.
And the pulley 28 attached to the shaft 27 of the lid 12 is rotationally driven. The dampers 141 to 144 are angularly displaced in conjunction with each other by, for example, a link mechanism. Dampers 141 to 1
When the cleaning liquid is sprayed from the upper nozzle member 8 when the lid 44 is closed and the lid 12 is open, the leftover dishes adhering to the tableware 3 are guided and guided over the dampers 141 to 144 and the leftover dish tank. Captured in 6. When the collected leftover food is accumulated, the drainer container 16 is taken out from the leftover food tank 6 and disposed of in an external trash box or the like.

With the dampers 141 to 144 opened and the lid 12 closed, the cleaning liquid is supplied from the upper and lower nozzle members 8 and 9 to the dishes 3
Then, the tableware 3 is washed. The cleaning liquid after cleaning falls and is stored in the cleaning liquid tank 5. The stored cleaning liquid is sent to the upper and lower nozzle members 8 and 9 by the cleaning liquid pump MP1 and circulated for use. When the cleaning is completed, the rinsing water is sprayed onto the dishes 3 from the upper and lower rinsing water nozzle members 10 and 11. Rinsing water is also the cleaning liquid tank 5
It is stored inside. In the process of treating the residual food, the cleaning liquid transferred into the residual food tank 6 and discharged is replenished with rinse water, and when the rinse water further overflows the overflow port 71, it is drained from the overflow pipe 7 through the drain port 18. It is discharged to the pipe 17.

Each of the steps of removing residual foods, washing and rinsing the dishes 3 is performed according to a preset sequence with the door 4 closed. The state in which the door 4 is closed is detected by the door switch 29. The tableware 3 is loaded and unloaded by opening the door 4.

A rinse water tank 30 is also provided below the cleaning chamber 2. The water level, which is the liquid level of the cleaning liquid tank 5 and the rinse water tank 30, is detected by the cleaning liquid tank water level detector 31 and the rinse water tank water level detector 32. The cleaning liquid tank 5 is provided with a cleaning liquid tank temperature detector 33 and a cleaning liquid heater 34 to keep the temperature of the cleaning liquid stored in the cleaning liquid tank 5 at about 60 to 65 ° C., for example. The rinse water in the rinse water tank 30 is heated to about 80 to 85 ° C. by the rinse water tank temperature detector 35 and the rinse water tank heater 36. When the rinse water is used, the solenoid valve 37 is opened to supply the rinse water through the water supply pipe 38. The tableware 3 is placed on the rack 39 and inserted into and taken out of the washing room 2.

FIG. 2 shows in detail the arrangement associated with the overflow pipe 7 and strainer 15 shown in FIG. The drain port 18 is provided in the stainless steel bottom plate 51 of the cleaning liquid tank 5. The flange portion 421 of the inner drainage port member 42 is placed around the drainage port 18 with the packing 41 interposed therebetween. The hanging part 422 of the inner drainage member 42 is the drainage port 1
8 is inserted. The flange portion 431 of the outer drain port member 43 is in close contact with the lower side around the drain port 18. The hanging part 432 of the outer drainage member 43 fits into a groove provided on the outer circumference of the hanging part 422 of the inner drainage member 42. In this way, the inner drainage member 42 and the outer drainage member 43, which are joined around the drainage outlet 18, form a drainage assembly 44. The packing 41 is made of an elastic material such as rubber or polyethylene. As the inner and outer drainage port members 42 and 43, stainless steel such as SUS304 or polyacetal resin such as Duracon under the trade name is used.

A drain plug rubber 45 can be inserted inside the inner drain member 42. The lower portion of the overflow pipe 7 is fixed to the inside of the drain tap rubber 45. The overflow pipe 7 is in the shape of a right cylinder, and the upper opening is the overflow port 7.
It becomes 1. The height of the overflow port 71 determines the height of the cleaning liquid surface 52. A handle 72 is provided in a part of the periphery of the overflow port 71 and projects from the cleaning liquid surface 52. By pulling up the handle 72, even if you do not insert your hand into the cleaning solution,
The overflow pipe 7 can be pulled out from the drain port 18.

Inside the overflow pipe 7, the strainer 15 is loosely inserted. A hole 151 is provided on the outer circumference of the strainer. The holes 151 are sized and shaped so as to block the permeation of the leftovers and allow only the cleaning liquid to permeate. A protrusion 152 is formed on the lower portion of the strainer 15, and a lateral groove 46 formed inside the hanging portion 422 of the inner drainage member 42.
To fit. A vertical groove 47 is formed on the inner circumference of the inner drainage member 42.
Is also formed. When the strainer 15 is angularly displaced about the axis and guides the projection 152 along the horizontal groove 46 to the position of the vertical groove 47, the strainer 15 can be pulled out upward.

FIG. 3 shows the overflow pipe 7 and strainer 15 shown in FIG. 2 as viewed from above. Holes 151 are also formed in the upper part of the strainer 15, and the cleaning liquid flowing in from the overflow port 71 is transmitted therethrough to prevent the residual food. Handle 72
Is provided in a part of the periphery of the overflow port 71.

FIG. 4 is a sectional view taken along the section line IV-IV shown in FIG. When the strainer 15 is angularly displaced with respect to the axis and the protrusion 152 is guided to the position of the vertical groove 47 formed in the inner drainage port member 42, the strainer 15 can be removed.

FIG. 5 is a perspective view of the strainer 15.
The strainer 15 has a right cylindrical shape having an outer diameter slightly smaller than the inner diameter of the overflow pipe 7, and has a hole 151 at the top and the outer peripheral portion. A protrusion 152 is formed on the lower portion of the strainer 15 so as to protrude outward in the radial direction.

The overflow pipe 7 is made of, for example, stainless steel, and the strainer 15 is made of polyacetal resin. According to this embodiment, since the height of the strainer 15 is made substantially equal to the height of the overflow pipe 7, even if the surface area of the strainer 15 is large and a large amount of residual food is accumulated in the cleaning liquid tank, the residual food It is possible to reduce the influence of the clogging of the hole 151 due to.

In the above embodiment, the lid 12 and the damper 14 are used.
Although the residual food from the tableware 3 is collected in advance by the methods 1 to 144, it is impossible to collect all the residual food, and the cleaning liquid tank 5 is repeatedly washed by repeating the cleaning of the tableware 3.
The leftovers are accumulated inside. Although dishwashers that do not collect residual foods are also widely used, in such dishwashers, the cleaning liquid stored in the cleaning liquid tank 5 becomes large and the amount of residual foods increases. . Therefore, the necessity of discharging the cleaning liquid to clean the inside of the cleaning liquid tank 5 is increased, and the effect of improving the workability according to the present invention is also increased. Further, in the case of the dishwasher for collecting the leftover food as in the embodiment shown in FIG. 1, since the dampers 141 to 144 and the like are provided, the worker inserts his / her hand into the cleaning liquid tank 5. The work is relatively difficult. According to the present embodiment, since it is less necessary for the operator to insert his / her hand into the cleaning liquid tank 5, workability can be improved.

[0029]

As described above, according to the present invention, the drain port 1
When the overflow pipe 7 is pulled out from 8, the drain port 18
Since the strainer 15 having the hole 151 formed on the outer peripheral surface thereof is erected in a columnar shape, it is possible to prevent the cleaning liquid from being difficult to be discharged due to clogging of the residual food near the drainage port 18, and The discharge can be quickly ended. Even if the cleaning liquid remains, it is limited to the vicinity of the bottom of the cleaning liquid tank 5. Therefore, it is not necessary to insert the arm into the residual cleaning liquid for the removal of the residual food, and the operation can be performed easily and quickly.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of an embodiment of the present invention.

2 is a cross-sectional view showing a configuration related to an overflow pipe 7 and a strainer 15 shown in FIG.

3 is a plan view of upper portions of the overflow pipe 7 and the strainer 15 shown in FIG.

4 is a cross-sectional view taken along the section line IV-IV shown in FIG.

5 is a perspective view of the strainer 15 shown in FIG. 1. FIG.

FIG. 6 is a cross-sectional view showing a configuration of a conventional drainage device of a dishwasher.

[Explanation of symbols]

 2 Washing room 3 Tableware 5 Cleaning liquid tank 7 Overflow pipe 8 Upper nozzle member 9 Lower nozzle member 15 Strainer 17 Drain pipe 18 Drainage port 42 Inner drainage member 43 Outer drainage member 44 Drainage port assembly 45 Drainage port rubber 46 Horizontal groove 47 Vertical groove 71 Overflow port 72 Handle 151 Hole 152 Protrusion

Claims (1)

[Claims] 1. A cleaning liquid is sprayed onto the dishes 3 in the cleaning chamber 2 for cleaning, the cleaning liquid after cleaning is stored in a cleaning liquid tank 5 provided below the cleaning chamber 2, and the stored cleaning liquid is stored in the cleaning liquid tank 5. In a drainage device of a dishwasher that discharges from a drainage port 18 provided in a lower portion, a hole 151 is formed upright in a columnar shape from the drainage port 18 and prevents permeation of persimmons and allows permeation of cleaning water on the outer peripheral surface. Drainage for a dishwasher, characterized in that it includes a strainer 15 to be removed, and an overflow pipe 7 whose lower part is detachably attached to the drain port 18 and which is loosely inserted outside the strainer 15 and has an overflow port 71 provided in the upper part. apparatus.