JPH07265244A - Dish washer/drier - Google Patents

Abstract

PURPOSE:To stabilize the response of an overflow detecting device at the time of an overflow during the water feed process in a dish washer/drier delivering washing water to wash dishes. CONSTITUTION:A washing tub 1 storing dishes 2 and an auxiliary water tub 6 are communicated with each other, and the water level in the auxiliary water tub 6 is detected by a water level detecting device 7. The auxiliary water tub 6 and an overflow collecting container 8 are communicated with each other, the overflow from the washing tub 1 is collected in the overflow collecting container 8 via the auxiliary water tub 6, and the water level in the overflow collecting container 8 is detected by an overflow detecting device 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher / dryer 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 leakage from the outside of the main body of the dishwasher.

Conventionally, this type of dishwasher has been constructed as shown in FIG. The configuration will be described below.

As shown in the figure, a cleaning tank 1 is for storing dishes 2 for cleaning and drying, and has a water supply port 3 at the upper part and a drain port 4 at the lower part. It communicates with the auxiliary water tank 6 through the auxiliary water tank connecting pipe 5.
The water level detection device 7 detects the water level in the auxiliary water tank 5. The overflow collection container 8 collects the water overflowed from the cleaning tank 1 via the overflow dedicated pipe 9, 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 structure will be described. Normally, in the water supply process, the water introduced into the cleaning tank 1 through the water supply port 3 starts to stay at the bottom of the cleaning tank 1. At this time, when water starts to stay in the auxiliary water tank 6 from the drainage port 4 through the auxiliary water tank connecting pipe 5 at the same water level as in the cleaning tank 1, and the water level in the auxiliary water tank 6 reaches a prescribed height. The water level detection device 7 operates and the water supply process ends. In addition, when the water level detection device 7 does not operate, such as when an abnormal state occurs, the overflow water from the cleaning tank 1 is introduced into the overflow water collection container 8 via the dedicated overflow water pipe 9, and the water level in the overflow water collection container 8 is When the water reaches the prescribed height, the overflow detection device 10 operates to prevent the water supply process from ending and the drainage process to start, thereby preventing water leakage to the outside 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 3 does not operate, the overflow water from the cleaning tank 1 is exclusively for the overflow water from the cleaning tank 1. Since the water is introduced into the overflow collection container 8 through the pipe 9, there is a problem that when the water overflows during the water supply process, the water level in the cleaning tank 1 fluctuates significantly and the response of the overflow detection device 10 becomes unstable. Was there.

The present invention solves the above-mentioned conventional problems, and it is a first object of the present invention to stabilize the response of the overflow detection device even when overflow occurs during the water supply process.

A second object is to achieve the first object and to easily set the 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.

A fourth object of the present invention is to achieve the second object and prevent erroneous detection of overflow water when the equipment vibrates.

[0011]

In order to achieve the first object, the present invention detects a cleaning tank for storing dishes, an auxiliary water tank communicating with the cleaning tank, and a water level in the auxiliary water tank. A water level detection device, an overflow water collection container for collecting overflow water from the cleaning tank, and an overflow water detection device for detecting the water level in the overflow water collection container are provided, and the auxiliary water tank and the overflow water collection container are communicated with each other. This is the first means for solving the problem.

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

In order to achieve the third object, the overflow water discharge pipe connecting portion of the second problem solving means has a cross-sectional area continuously reduced toward the overflow water discharge pipe connecting port. It is set as the means for solving the three problems.

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

[0015]

According to the first means for solving the above problems, the present invention provides:
The overflow water from the washing tank is introduced into the overflow water collection container communicating with the auxiliary water tank through the auxiliary water tank communicating with the cleaning 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, the second problem solving means makes it possible to easily set the water level in the cleaning tank at the time of overflow due to the height of the partition wall.

Further, by the third means for solving the problem, since the head of the communication between the auxiliary water tank and the overflow collecting device can be easily obtained, the overflow flow rate can be further stabilized.

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

[0019]

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

As shown in the drawing, the overflow water discharge pipe 12 connects the auxiliary water tank 6 and the overflow water collection container 8, and the position of the inlet of the overflow water discharge pipe 12 is at a specified height at which the water level detection device 7 operates. Is higher than the height of the overflow surface of the cleaning tank 1.

The operation of the above structure will be described. First, in the water supply process, the water introduced from the water supply port 3 into the cleaning tank 1 starts to stay at the bottom of the cleaning tank 1. At this time, when water starts to stay in the auxiliary water tank 6 from the drainage port 4 through the auxiliary water tank connecting pipe 5 at the same water level as in the cleaning tank 1, and the water level in the auxiliary water tank 6 reaches a prescribed height. The water level detection device 7 operates and the water supply process ends.

If an abnormal condition occurs and the water level detection device 7 does not operate, the water level in the cleaning tank 1 and the water level in the auxiliary water tank 6 rise at the same time, and the inlet of the overflow water discharge pipe 12 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 cleaning tank 1, so that the auxiliary water tank 6 is removed before the overflow water from the cleaning tank 1 occurs. Overflow water is introduced into the overflow water collection container 8 through the overflow water discharge pipe 12, and when the water level in the overflow water collection container 8 reaches a prescribed height, the overflow water detection device 10 operates to end the water supply stroke, The drainage process is started and water leakage to the outside of the equipment can be prevented.

At this time, the water level in the auxiliary water tank 6 constantly rises, the overflow water from the auxiliary water tank 6 is stably supplied to the overflow water collecting container 8, and the water level in the overflow water collecting container 8 constantly rises. Therefore, the response of the overflow detection device 10 is 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 designated by the same reference numerals and the description thereof will be omitted.

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

With the above structure, the same effect as in the first embodiment can be obtained. In addition, in the case of the first embodiment, since the water level in the cleaning tank 1 at the time of overflow is determined by the connection position of the auxiliary water tank 6 and the overflow water discharge pipe 12, it is not possible to easily change the overflow water level setting. In the example, the height of the partition wall 14 determines the water level in the cleaning tank 1 at the time of overflow, so that the overflow water level setting can be easily changed.

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

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

With the above structure, the same effect as that of the second embodiment can be obtained. Further, in the case of the second embodiment, it is difficult to obtain the head of overflow water for the overflow water discharge pipe 12,
In this embodiment, the overflow water discharge pipe 1 is connected to the overflow water discharge pipe 1
Since the cross-sectional area gradually decreases toward 2, the head of the overflow water discharge pipe 12 can be easily obtained, and the flow rate of the overflow water in the overflow water discharge pipe 12 can be further stabilized.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The same components as those in the second embodiment are designated by the same reference numerals and the description thereof will be 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 detection device installation portion 14 side.

With the above structure, the same effect as that of the second embodiment can be obtained. In the case of the second embodiment, when the equipment vibrates, the water on the side of the water level detection device 14 passes over the partition wall 20, and the overflow water discharge pipe connecting portion 15 is erroneously mistaken.
There is a possibility that it may flow into the side and cause an erroneous detection of the overflow detection device 10. However, in this embodiment, since the upper end of the partition wall 20 is inclined toward the water level detection device installation part 14 side, the water level detection device installation part The possibility that water on the 14 side will cross the partition wall 20 is reduced, and erroneous detection of the overflow detection device 10 can be prevented.

[0033]

As described above, according to the present invention, a cleaning tank for storing dishes, an auxiliary water tank communicating with the cleaning tank, a water level detecting device for detecting the water level in the auxiliary water tank, and the cleaning tank An overflow collection container for collecting overflow and an overflow detection device for detecting the water level in the overflow collection container are provided, and the auxiliary water tank and the overflow collection container are made to communicate with each other. Changes steadily, so that the response of the overflow detection device can be stably obtained.

Further, since the partition wall is provided in the auxiliary water tank and the two tank structure of the water level detecting device installation portion and the overflow water discharge pipe connecting portion is adopted, the level of the overflow water is set by changing the height of the partition wall. Can be easily changed.

Further, since the cross-section area of the overflow water discharge pipe connecting portion is continuously reduced toward the overflow water discharge pipe connecting port, the overflow water head for the communication portion between the auxiliary water tank and the overflow water collecting container can be easily obtained. It is possible to further stabilize the flow rate of overflow water in the communication section.

Furthermore, since the upper end of the partition wall is inclined toward the water level detection device installation side, erroneous inflow of water from the water level detection device installation side in the auxiliary water tank into the overflow discharge pipe connection part when the equipment vibrates. Therefore, it is possible to prevent erroneous detection of the overflow detection device.

[Brief description of drawings]

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

[Fig.2] Enlarged view of essential parts of the dishwasher

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

FIG. 4 is an enlarged view of essential parts of a dishwasher / dryer according to a third embodiment of the present invention.

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

FIG. 6 is a vertical sectional view of a conventional dishwasher / dryer.

[Explanation of symbols]

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

Front page continuation (72) Inventor Kyosuke Kimura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A washing tank for storing dishes, an auxiliary water tank communicating with the cleaning tank, a water level detection device for detecting the water level in the auxiliary water tank, and an overflow collection container for collecting overflow water from the cleaning tank. A dishwashing / drying machine, comprising: an overflow detection device for detecting the water level in the overflow collection container, wherein the auxiliary water tank and the overflow collection container are communicated with each other. 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 portion and an overflow water discharge pipe connection portion. 3. The dishwasher / dryer according to claim 2, wherein the overflow water discharge pipe connecting portion has a cross-sectional area continuously reduced toward the overflow water discharge pipe connecting port. 4. The dishwasher / dryer according to claim 2, wherein the upper end portion of the partition wall is inclined toward the water level detection device installation portion side.