JP2001029305A - Tableware washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the easy cleaning of both upper and lower part of a parti tion wall member, the inside wall part of a washing water tank, the outer peripheries of a supporting column, etc., of a tableware washing machine. SOLUTION: This washing machine is formed by constituting a washing nozzle 21 and a rinsing nozzle 23 attachably and detachably to and from the supporting column 18, constituting the partition wall member 12 attachably and detachably to and from a machine body 11 and removing the partition wall member 12 from the machine body 11 in the state of removing both nozzles 21 and 23 from the supporting column 18. The easy cleaning of the cooling water tank 13, the supporting column 18, the respective nozzles 21 and 23, etc. is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a dishwasher.

[0002]

2. Description of the Related Art As a type of dishwasher, Japanese Utility Model Showa 58-
As disclosed in Japanese Patent Publication No. 112272, a partition member is provided inside a box-shaped machine main body to partition the inside of the machine main body into a lower washing water tank and an upper washing tank, and a bottom portion of the washing water tank. A supporting column that penetrates through the partition wall member and faces the bottom of the cleaning tank; and a cleaning nozzle attached to the head of the supporting column. The cleaning water stored in the cleaning water tank is supplied to the cleaning nozzle and supplied to the cleaning nozzle. Injection from the cleaning nozzle into the cleaning tank,
There is a dishwasher of a type in which washing water injected into a washing tank is returned to a washing water tank through a filter to wash dishes stored in the washing tank.

In the dishwasher disclosed in the above publication, the above-mentioned partition member is provided with a filter device,
The filter device includes a frame and a filter that is removably inserted into a guide groove of the frame, and is located below the rinse nozzle and the washing nozzle. In the filter device, the filter can be taken out from the front opening of the machine body.

[0004]

As described above, in the dishwasher of this type, the filter can be taken out from the front opening of the main body of the dishwasher as in the dishwasher disclosed in the above-mentioned publication. The member is difficult to remove from the machine body due to the rinse nozzle and the cleaning nozzle. For this reason, cleaning of the upper and lower surfaces of the partition wall member, the inner wall surface of the washing water tank, the outer peripheral surface of the support pillar, and the like is very difficult. SUMMARY OF THE INVENTION It is therefore a primary object of the present invention to provide a dishwasher of this type which can be easily cleaned.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a dishwasher, which is provided inside a box-shaped machine body and partitions the inside of the machine body into a lower washing water tank and an upper washing tank. A member, a support column penetrating the partition member from the bottom of the wash water tank and facing the bottom of the wash tank, and a cleaning nozzle attached to the head of the support column, The washing water to be stored is supplied to the washing nozzle and injected from the washing nozzle into the washing tank, and the washing water injected into the washing tank is introduced into the washing water tank through a filter provided on the partition member. The present invention is applied to a dishwasher of a type in which the tableware stored in the washing tank is refluxed.

According to the present invention, there is provided a dishwasher of the type described above, wherein the washing nozzle is configured to be detachable from the support column, and the partition member is configured to be detachable from the machine body. The partition member is configured to be detachable from the machine main body in a state where the cleaning nozzle is detached from the support column.

[0007] In the dishwasher according to the present invention, the partition member has a through hole through which the support column penetrates, and is disposed in the machine body to form a flat opening at a peripheral portion thereof. The partition plate may be configured such that a filter for closing the opening is mounted on a peripheral portion of the partition plate.
Further, the partition plate is provided with a punching portion having a large number of small holes on the entire surface or a part thereof, and is disposed so as to be inclined downward to the filter side, and a part of the cleaning water in the cleaning tank is directed to the cleaning water tank side. It can be configured to transmit light.

[0008]

In the dishwasher according to the present invention, the washing nozzle is configured to be detachable from the support column, and the partition member is configured to be detachable from the machine body. The partition member can be removed from the main body of the machine in a state where the partition member has been removed from the support column. Therefore, when cleaning the inside of the machine body, the cleaning nozzle can be removed from the support pillar, and then the partition member can be removed from the support pillar and removed from the machine body, thereby easily cleaning the inside of the washing water tank and the support pillar. And the removed partition member and filter can be easily cleaned.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows the lower part of the inside of the machine main body in the dishwasher according to an example of the present invention. In the dishwasher, the inside of the machine main body 11 is vertically divided by a partition wall member 12, A lower portion of the partition member 12 is formed in a cleaning water tank 13 for storing cleaning water, and the partition member 1
The upper part of 2 is formed in a washing tank 14 for storing dishes to be washed. In addition, the lower part of the washing water tank 13 is formed in the installation place 15 of machinery.

As shown in FIGS. 1 to 4, the partition member 12 is provided with a circular through hole 12b at the front center of a rectangular partition plate 12a and a flange 12 at the front edge.
c, which are placed on the upper edge of the washing water tank 13 at the left, rear and right sides at the peripheral edge, and open to the front of the opening of the washing water tank 13. It is covered from above by filters 16 and 17. Each of the filters 16 and 17 is placed on the upper edge of the washing water tank 13 and on the front flange 12 c of the partition member 12.

At the bottom of the washing water tank 13, a support column 18 is provided upright at the center thereof, and the support column 18 stands up through the through hole 12b at the center of the partition wall member 12. . The top of the support column 18 faces above the partition member 12, and a nozzle header 19 is mounted on the top in a liquid-tight, rotatable and detachable manner. The washing nozzles 21 are fitted and fixed and detachably assembled. A nozzle shaft 22 is mounted on the top of the nozzle header 19 so as to be rotatable and detachable in a liquid-tight manner, and a plurality of rinse nozzles 23 are fitted and fixed to the outer periphery of the nozzle shaft 22. It is attached detachably.

At the bottom of the washing water tank 12, an overflow pipe 24 and a pump filter 25 are provided. The overflow pipe 24 is connected to both filters 1
The cleaning water tank 13 is located below the boundary, and penetrates through the concave bottom portion 13a of the cleaning water tank 13 so as to protrude downward to face the suction pipe 26 of the cleaning water. The lower end of the suction pipe 26 is connected to a supply pump 27 for washing water. The pump filter 25 has a cylindrical introduction portion 25a.
And a flat filter portion 25b integrated with the lower end thereof.
In a state where the filter portion 25b is externally fitted, the peripheral portion of the filter portion 25b is disposed so as to be hooked on the upper edge portion of the concave bottom portion 13a. The introduction portion 25a of the pump filter 25 is concentrically located at a predetermined circumferential interval on the outer periphery of the overflow pipe 24, and the cleaning water in the cleaning water tank 13 is supplied between these two 24, 25a by an arrow a. , B, c are formed.

In the dishwasher, the washing water in the washing water tank 12 is supplied to the supply pump 27 during the washing operation.
Is supplied to each cleaning nozzle 21 through the support column 18 and a part of excess cleaning water is discharged.
In the cleaning nozzle 21, the supplied cleaning water is sprayed obliquely upward into the cleaning tank 14 from a number of nozzle portions, and is rotated by the reaction force of the spraying force. . The cleaning water injected into the cleaning tank 14 is
The water is returned to the washing water tank 13 through the partition member 12 and the filters 16 and 17, and is stored and circulated.

In the dishwasher, during the rinsing operation, fresh rinsing water is supplied from outside to the rinsing nozzle 2.
3 and the rinsing nozzle 23 injects the supplied washing water obliquely upward into the washing tank 14 from a number of nozzles and rotates by the reaction force of the jetting force. Inject without. The rinsing water injected into the cleaning tank 14 is supplied to the partition member 12 and the filters 16 and 17.
The washing water is returned to the washing water tank 13 and stored therein, and a part of the washing water that becomes excessive in the washing water tank 13 is discharged.

In the dishwasher, as shown in FIGS. 1 to 5, the partition member 12 cleans a large number of portions (cross-hatched portions shown) behind the through holes 12b in the partition plate 12a. It is formed in the water permeable portion 12d. Each transmission portion 12d has a number of small holes formed by punching, and is distributed substantially uniformly over the entire rear portion of the partition plate 12a behind the portion where the filters 16 and 17 are provided. The partition member 12 is disposed to be slightly inclined downward from the rear of the machine body 11 to the front.

Each of the filters 16 and 17 mounted on the partition member 12 includes a punched metal 16a, 17a having a portion having a large number of small holes formed by punching (intersecting portion shown). Punching metal 1
It is constituted by handles 16b, 17b provided on 6a, 17a, and can be removed from the washing water tank 13 and the partition member 12 by holding each handle 16b, 17b.

In the dishwasher constructed as described above, during the washing operation, the washing water in the washing water tank 13 is supplied to the washing nozzles 21 by the drive of the supply pump 27, and the number of nozzles of the washing nozzles 21 is increased. From part to cleaning tank 14
The washing utensils are sprayed into the washing tank 14 to wash the tableware stored in the washing tank 14 and flow through the partition plate 12a of the partition member 12 to the respective filters 16 and 17 while passing through the permeation section 12e to wash water tank 13 And flows back through the filters 16 and 17 to the washing water surface of the washing water tank 13. During this time, the contaminants mixed in the wash water remain on the filters 16 and 17, and the contaminants once captured on the partition plate 12a are removed by the wash water flowing on the partition plate 12a. Gradually, and accumulated and retained in each of the filters 16 and 17.

In the dishwasher, a rinsing operation is started after the washing operation is completed. During the rinsing operation, fresh and high-temperature rinsing water is supplied from an external water heater to the rinsing nozzle 23.
And is sprayed into the cleaning tank 14 from a number of nozzle portions of the rinsing nozzle 23, and rinses the dishware stored in the cleaning tank 14 to be cleaned on the partition plate 12a of the partition member 12. While flowing toward the filters 16 and 17, the water flows through the permeation section 12 d and returns to the washing water surface of the washing water tank 13, and passes through the filters 16 and 17 and returns to the washing water surface of the washing water tank 13. I do. During this time,
The remaining contaminants on the partition plate 12a are gradually transferred to the filters 16 and 17 by rinsing water flowing on the partition plate 12a. The excess wash water in the wash water tank 13 is gradually discharged from the wash water at the bottom of the tank, and the amount of wash water stored in the wash water tank 13 is always maintained at a constant amount.

Thus, in the dishwasher,
When the washing water flows back into the washing water tank 13, the washing water passes through the entire surface of the partition wall member 12 and both the filters 16 and 17, and almost uniformly returns to the entire upper surface of the washing water in the washing water tank 13. For this reason, when the washing water circulates through the washing tank 14 with the washing water tank 13 as a base, the washing water concentrates on the upper surface of the overflow pipe 24 so that bubbles are intensively generated at the portion. There is nothing. For this reason, entrainment of air bubbles generated in the cleaning water tank 13 during operation of the supply pump 27 into the supply pump 27 is prevented, and cavitation caused by entrainment of air bubbles is reduced.
The washing capacity of the dishwasher can be prevented from lowering, and the life of the supply pump 27 can be improved.

Further, in the dishwasher, even when the rinsing water returns to the washing water tank 13, the washing water in the washing water tank 13 passes through the entire surface of the partition wall member 12 and the filters 16 and 17. Reflux almost uniformly over the entire upper surface of Therefore, as shown by the two-dot chain line in FIG. 1, the refluxed rinse water W1 is located over the entire surface of the wash water W2 to efficiently heat the existing wash water W2, Used for washing water in the next washing operation together with W2.

In the dishwasher, it is preferable to clean the inside of the machine body 11 after performing the washing operation and the rinsing operation many times.
Then, the rinsing nozzle 23 and the nozzle header 19 are removed from the top of the support column 18, the filters 16 and 17 are removed from the partition member 12, and the partition member 12 is removed from the washing tank 13. This makes it possible to easily clean the inner wall and bottom of the cleaning tank 13, the outer periphery of the support column 18, the inner and outer periphery of the overflow pipe 24, and the inner and outer periphery of the pump filter 25. Further, the cleaning nozzle 21 can be removed from the header 19 and the rinsing nozzle 23 can be removed from the nozzle shaft 22, so that the cleaning can be easily performed with the nozzles 21 and 23 removed. It is needless to say that the removed filters 16 and 17 can be easily cleaned.

In the dishwasher, as shown in FIG. 6, a washing nozzle 28 and a rinsing nozzle 29 are also provided above the washing tank 14, so that the dishes stored in the washing tank 14 can be moved up and down. It is configured so that cleaning and rinsing can be performed. The cleaning nozzle 28 is liquid-tightly and rotatably mounted on an intermediate portion of a nozzle head 33 which is mounted in a liquid-tight manner on the cleaning water supply line 31 and the rinse water supply line 32. The rinsing nozzle 29 is liquid-tightly and rotatably mounted on a lower end portion of a nozzle shaft 34 which is fitted inside the nozzle head 33 and is liquid-tightly mounted.

The washing nozzle 28 is located above the rinsing nozzle 29. The washing water is supplied through the washing water supply pipe 31 by driving the supply pump 27, and the supplied washing water rotates obliquely from a number of nozzles. Inject downward. The rinsing nozzle 29 is located below the washing nozzle 28, and rinsing water is supplied from an external water heater through a rinsing water supply line 32, and the supplied rinsing water is rotated obliquely downward from a number of nozzle portions while rotating. Inject toward. After the washing water and the rinsing water injected into the washing tank 14 come into contact with the dishes, the partition wall member 12 and the filters 16,
The water is returned to the washing water tank 13 through the cleaning water 17.

The nozzle head 33 has an air intake hole 33a at the top. The air intake hole 33a has a function of positively introducing outside air into the nozzle head 33, and the cleaning water remaining inside the nozzle head 33 and the cleaning nozzle 28 after the cleaning operation is completed.
It functions to discharge from a number of nozzle portions of the cleaning nozzle 28. As a result, the washing water remaining after the end of the washing operation is quickly extracted from the washing nozzle 28, and the remaining washing water dripping W3 from a number of nozzle portions of the washing nozzle 28 thereafter.
Can be shortened, and the rinsing efficiency can be improved, so that the cleaning operation efficiency can be improved.

FIG. 7 shows a time chart of the cleaning operation and the rinsing operation. The cleaning operation ends in S1 hour,
The rinsing operation is started after the elapse of the operation suspension time S2, the rinsing operation is completed in the time period S3, and both the cleaning operations are terminated after the operation is suspended for the time period S4. During this time, the operation time required for one cycle of the dishwasher is S5.

In the conventional one-cycle washing operation of the dishwasher, the washing water remaining inside the nozzle head 33 and the washing nozzle 28 is drained for a long time after the washing operation (S1 hour), and the operation is stopped. The washing water which cannot be drained within the time S2 is drawn out as drooping W3, and adheres to the dishware after washing, thereby lowering the rinsing efficiency. As a method for solving this problem, a method of increasing the operation suspension time S2 after the cleaning operation time S1 or increasing the rinsing operation time S3 is adopted. In this solution, the time S5 required for one cycle of cleaning operation is used. And the operating efficiency decreases.

On the other hand, in the dishwasher, an air intake hole 33a is provided at the top of the nozzle head 33 so that air is actively taken into the nozzle head 33 and the washing nozzle 28, and Further, the time for draining the cleaning water remaining in the cleaning nozzle 28 is shortened. Therefore, in the dishwasher, the drooping W3 after the washing operation (S1 hour) can be completed in a short time, and the time S5 required for one cycle of the washing operation can be reduced, thereby improving the operation efficiency. Can be done.

It should be noted that a plurality of air intake holes 33a may be provided, and not only the nozzle head 33 but also the cleaning nozzle 28 and the nozzle shaft 34, etc., where air effectively flows into the nozzle head 33 and the cleaning nozzle 28 as appropriate. May be provided at a portion of the above.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a lower part inside a machine main body in a dishwasher according to an example of the present invention.

FIG. 2 is a plan view of the same part.

FIG. 3 is a vertical sectional front view in which a washing nozzle, a rinsing nozzle, a support column, and the like in the same portion are omitted.

FIG. 4 is a vertical sectional side view of the same.

FIG. 5 is a plan view of a partition member constituting the dishwasher.

FIG. 6 is a vertical sectional side view showing an upper portion inside the machine main body in the dishwasher.

FIG. 7 is a time chart of a washing operation and a rinsing operation in the dishwasher.

[Explanation of symbols]

11: Machine body, 12: Partition member, 12a: Partition plate, 12
b: through-hole, 12c: flange, 12d: transmission part, 1
3 ... Washing water tank, 13a ... Concave bottom, 14 ... Washing tank, 1
5 ... machine installation place, 16, 17 ... filter, 16
a, 17a: punching metal, 16ba, 17b: handle, 18: support column, 19: nozzle header, 21: cleaning nozzle, 22: nozzle shaft, 23: rinse nozzle, 24
... overflow pipe, 25 ... pump filter, 25
a ... introduction part, 25b ... filter part, 26 ... suction pipe, 27 ... supply pump, 28 ... washing nozzle, 29 ... rinsing nozzle, 31 ... washing water supply line, 32 ... rinse water supply line, 33 ... nozzle head , 33a ... air intake hole, 3
4: Nozzle shaft, W1: Rinse water, W2: Wash water, W3: Backward dripping.

Claims (3)

[Claims] 1. A partition member provided inside a box-shaped machine main body to partition the inside of the machine main body into a lower washing water tank and an upper washing tank, and the partition member from the bottom of the washing water tank. A supporting column that penetrates the bottom of the cleaning tank and a cleaning nozzle attached to a head of the supporting column, and supplies cleaning water stored in the cleaning water tank to the cleaning nozzle to perform the cleaning; Tableware stored in the washing tank by injecting the washing water from the nozzle into the washing tank and returning the washing water injected into the washing tank to the washing water tank through a filter mounted on the partition member. In a dishwasher for cleaning foods, the washing nozzle is configured to be detachable from the support column, and the partition member is configured to be detachable from the machine body, and the partition member is Is the cleaning nozzle Dishwasher, characterized in that it is configured to be able in a detached state removed from the machine body. 2. The dishwasher according to claim 1, wherein the partition member has a through hole through which the support column passes, and is disposed in the machine body to form a predetermined opening at a peripheral edge. A dishwasher, comprising: a plate-like partition plate, wherein a filter for closing the opening is mounted on a peripheral portion of the partition plate. 3. The dishwasher according to claim 2, wherein the partition plate is provided with a punching portion having a large number of small holes on the entire surface or a part thereof, and is disposed to be inclined downward to the filter side, and the washing tank is provided. A dishwasher, wherein a part of the washing water in the inside is transmitted to the washing water tank side.