JP3147650B2 - Dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher which discharges washing water to wash dishes.

[0002]

2. Description of the Related Art In recent years, it has become important for a dishwasher to prevent water from leaking out of the dishwasher body.

Conventionally, this type of dishwasher / dryer has been configured as shown in FIG. Hereinafter, the configuration will be described.

[0004] As shown in the figure, a washing tank 1 stores and cleans and dries tableware 2, and is provided with a water supply port 3 at an upper part and a drainage port 4 at a lower part. It communicates with the auxiliary water tank 6 via the auxiliary water tank connecting pipe 5.
The water level detecting device 7 detects a water level in the auxiliary water tank 6 . The overflow collection container 8 collects water that has overflowed from the washing tank 1 through the exclusive pipe 9 for overflow, and the overflow detection device 10 detects the water level in the overflow collection container 8. Underframe 11
Supports the cleaning tank 1, the auxiliary water tank 6, and the like.

The operation of the above configuration will be described. Normally, water introduced into the washing tank 1 from the water supply port 3 in the water supply process starts to stay at the bottom of the washing tank 1. At this time, water starts to stay at the same water level as the inside of the washing tank 1 from the drain port 4 to the auxiliary tank 6 via the auxiliary tank connecting pipe 5, and when the water level in the auxiliary tank 6 reaches the specified height. Then, the water level detection device 7 operates to end the water supply process. When the water level detecting device 7 does not operate, for example, when an abnormal condition occurs, the overflow from the washing tank 1 is introduced into the overflow collection container 8 through the overflow exclusive pipe 9, and the water level in the overflow collection container 8 is reduced. When the water reaches the specified height, the overflow detection device 10 operates to end the water supply process, start the drainage process, and prevent water from leaking out of the dishwasher main body.

[0006]

In such a conventional configuration, when the equipment falls into an abnormal state and the water level detecting device 7 does not operate, the overflow from the cleaning tank 1 is exclusively used for the overflow from the cleaning tank 1. Since the water is introduced into the overflow collection container 8 through the pipe 9, if the water overflows during the water supply process, the water level in the washing tank 1 fluctuates greatly, and the response of the overflow detector 10 becomes unstable. I was

An object of the present invention is to solve the above-mentioned conventional problems, and it is a first object of the present invention to stabilize a response of an overflow detecting device even when water overflows during a water supply process.

A second object is to achieve the first object and to easily set a water level at the time of overflow.

A third object is to achieve the second object and to stabilize the flow rate at the time of overflow.

It is a fourth object of the present invention to achieve the second object and prevent erroneous detection of overflow when the apparatus is vibrated.

[0011]

In order to achieve the first object, the present invention provides a washing tank for accommodating tableware, an auxiliary water tank communicating with the washing tank, and detecting a water level in the auxiliary water tank. A water level detection device, an overflow collection container for collecting overflow from the washing tank, and an overflow detection device for detecting a water level in the overflow collection container, wherein the overflow height of the auxiliary water tank is
Set the height lower than the overflow height of the washing tank, and overflow from the auxiliary tank.
Is to be introduced into the overflow collection container.
Means to solve the problem.

In order to achieve the second object, a partition wall is provided in the auxiliary water tank of the first means for solving the above-mentioned problem, and a two-tank structure of a water level detecting device installation portion and an overflow discharge pipe connection portion is provided. This is the second means for solving the problem.

Further, in order to achieve the third object, the overflow discharge pipe connecting portion of the second means for solving the problem is that the cross-sectional area is continuously reduced toward the overflow discharge pipe connection port. 3 means for solving the problem.

Further, in order to achieve the fourth object, the fourth problem-solving means is that the upper end of the partition wall of the second problem-solving means is inclined toward the water level detecting device installation side.

[0015]

According to the first aspect of the present invention, there is provided:
The overflow from the washing tank is introduced into the overflow collecting container communicating with the auxiliary tank through the auxiliary tank communicating with the washing tank.
At this time, since the water level in the auxiliary water tank constantly changes even during the water supply process, the water level in the overflow collection container also constantly changes, and the response of the overflow detection device can be stabilized.

Further, according to the second means for solving the problem, it is possible to easily set the water level in the washing tank at the time of overflow by the height of the partition wall.

[0017] Further, according to the third means for solving the problem, the head of the communicating portion between the auxiliary water tank and the overflow collecting device can be easily obtained, so that the overflow flow rate can be further stabilized.

Further, by means of the fourth problem solving means, it is possible to prevent erroneous inflow of water from the water level detecting device installation portion in the auxiliary water tank to the overflow discharge pipe connection portion when the equipment is vibrated, thereby preventing erroneous detection of the overflow detecting device. can do.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the overflow discharge pipe 12 communicates the auxiliary water tank 6 with the overflow collection vessel 8, and the position of the inlet of the overflow discharge pipe 12 is a predetermined height at which the water level detecting device 7 operates. And lower than the height of the overflow surface of the washing tank 1.

The operation of the above configuration will be described. First, in the water supply process, water introduced into the cleaning tank 1 from the water supply port 3 starts to stay at the bottom of the cleaning tank 1. At this time, water starts to stay at the same water level as the inside of the washing tank 1 from the drain port 4 to the auxiliary tank 6 via the auxiliary tank connecting pipe 5, and when the water level in the auxiliary tank 6 reaches the specified height. Then, the water level detection device 7 operates to end the water supply process.

Here, when an abnormal condition occurs and the water level detecting device 7 does not operate, the water level in the auxiliary water tank 6 rises at the same time as the water level in the cleaning tank 1, and the inlet of the overflow discharge pipe 12 is opened. Is set higher than the prescribed height at which the water level detection device 7 operates and lower than the height of the overflow surface of the washing tank 1, so that the water from the auxiliary tank 6 before the overflow from the washing tank 1 occurs. Is introduced into the overflow collection container 8 via the overflow discharge pipe 12, and when the water level in the overflow collection container 8 reaches a specified height, the overflow detection device 10 operates to end the water supply process, The draining process is started, and it is possible to prevent water leakage outside the device.

At this time, the water level in the auxiliary water tank 6 rises steadily, and the overflow from the auxiliary water tank 6 is stably supplied to the overflow collection vessel 8, and the water level in the overflow collection vessel 8 rises constantly. Therefore, the response of the overflow detector 10 can be stably obtained.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, the auxiliary water tank 13 is provided with a partition wall 13a inside, and has a two-tank structure of a water level detecting device installation portion 14 and an overflow discharge pipe connecting portion 15, and the water level detecting device detecting portion 14 The water level detecting device 7 is provided, and the overflow discharge pipe connecting portion 15 is provided.
The overflow discharge pipe 12 is connected to the overflow discharge pipe connection port 16.

With the above configuration, the same effects as in the first embodiment can be obtained. In the case of the first embodiment, since the water level in the washing tank 1 at the time of overflow is determined by the connection position between the auxiliary water tank 6 and the overflow discharge pipe 12, it is not easy to change the overflow water level setting. In the example, since the water level in the washing tank 1 at the time of overflow is determined by the height of the partition wall 13a ,
Flood water level setting can be easily changed.

Next, a third embodiment of the present invention will be described with reference to FIG. The components having the same configuration as the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the overflow discharge pipe connecting portion 18 of the auxiliary water tank 17 has a continuously decreasing cross-sectional area toward the overflow discharge pipe connection port 16.

With the above configuration, the same effects as in the second embodiment can be obtained. Further, in the case of the second embodiment, it is difficult to obtain the head of the overflow to the overflow pipe 12,
In this embodiment, the overflow discharge pipe 1 is connected to the overflow discharge pipe connecting portion 18.
Since the sectional area gradually decreases toward 2, the head of the overflow pipe 12 can be easily obtained, and the flow rate of the overflow in the overflow pipe 12 can be further stabilized.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The components having the same configuration as the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the partition wall 20 provided in the auxiliary water tank 19 has its upper end inclined toward the water level detecting device installation section 14 side.

With the above configuration, the same effects as in the second embodiment can be obtained. Further, in the case of the second embodiment, when the equipment is vibrated, the water on the water level detection device installation unit 14 side crosses over the partition wall 20 and erroneously overflows the overflow discharge pipe connection unit 15.
To the side of the water level detection device 10, there is a possibility of causing erroneous detection of the overflow detection device 10, but in this embodiment, since the upper end of the partition wall 20 is inclined toward the water level detection device installation portion 14, the water level detection device installation portion The possibility that the water on the 14 side gets over the partition wall 20 is reduced, and erroneous detection of the overflow detection device 10 can be prevented.

[0033]

As described above, the present invention provides a washing tank for accommodating tableware, an auxiliary water tank communicating with the washing tank, a water level detecting device for detecting a water level in the auxiliary tank, comprising a overflow collection container for collecting the flooding, a flooding detection device for detecting the water level of the overflow collection container, said auxiliary water
The overflow height of the tank was made lower than the overflow height of the washing tank, and the overflow from the auxiliary tank was introduced into the overflow collection container , so that the water level in the washing tank at the time of overflow was steady. Therefore, the response of the overflow detecting device can be stably obtained.

In addition, since a partition wall is provided in the auxiliary water tank, and a two-tank structure including a water level detecting device installation portion and an overflow discharge pipe connection portion is provided, the overflow water level is set by changing the height of the partition wall. Can be easily changed.

Further, since the cross-sectional area of the overflow discharge pipe connection portion is continuously reduced toward the overflow discharge pipe connection port, the head of the overflow to the communication portion between the auxiliary water tank and the overflow collection container can be easily obtained. And the flow rate of the overflow in the communication part can be further stabilized.

Furthermore, since the upper end of the partition wall is inclined toward the water level detecting device installation portion, erroneous inflow of water from the water level detecting device mounting portion side to the overflow discharge pipe connection portion side in the auxiliary water tank when the equipment is vibrated. It is possible to prevent erroneous detection of the overflow detecting device.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of the main part of the dishwasher

FIG. 3 is an enlarged view of a main part of a dishwasher according to a second embodiment of the present invention.

FIG. 4 is an enlarged view of a main part of a dishwasher according to a third embodiment of the present invention.

FIG. 5 is an enlarged view of a main part of a dishwasher according to a fourth embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a conventional dishwasher and dryer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing tank 2 Tableware 5 Auxiliary water tank connection pipe 6 Auxiliary water tank 7 Water level detection device 8 Overflow collection container 10 Overflow detection device 12 Overflow discharge pipe

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kyosuke Kimura 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References Jikai Sho 56-79272 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A47L 15/42

Claims (4)

(57) [Claims] 1. A washing tank for storing tableware, an auxiliary water tank communicating with the washing tank, a water level detecting device for detecting a water level in the auxiliary water tank, and an overflow collecting container for collecting overflow from the washing tank. An overflow detection device for detecting a water level in the overflow collection container, wherein the height of the overflow of the auxiliary water tank is determined by the cleaning.
A dishwasher / dryer which is lower than the overflow height of the tank so that the overflow from the auxiliary tank is introduced into the overflow collection container. 2. The dishwasher / dryer according to claim 1, wherein a partition wall is provided in the auxiliary water tank, and the auxiliary water tank has a two-tank structure including a water level detection device installation part and an overflow discharge pipe connection part. 3. The dishwasher according to claim 2, wherein the overflow discharge pipe connection portion has a cross-sectional area continuously reduced toward the overflow discharge pipe connection port. 4. The dishwasher / dryer according to claim 2, wherein the upper end of the partition wall is inclined toward the water level detecting device installation side.