JP2858373B2 - Dishwasher - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher having an overflow detection device for detecting water overflowing from a washing tank.

2. Description of the Related Art The configuration of a conventional dishwasher was as shown in FIG. Hereinafter, the configuration will be described with reference to FIG.

Inside the main body 1 of the dishwasher, a box-shaped washing tank 2 having an open front surface is provided. The washing water in the washing tank 2 is passed through a garbage filter 5 and is sucked into a washing pump 4 which is driven to rotate by a motor 3, and is sent under pressure to upper and lower washing nozzles 6, 6 as washing means. The cleaning water vigorously sprayed from the cleaning nozzles 6 collides with tableware 8, 8 arranged in the upper and lower baskets 7, 7 to perform cleaning. Reference numeral 9 denotes a blower fan for forcibly discharging steam in the cleaning tank 2 from an exhaust port 10 provided at an upper portion of the main body 1 during drying. Reference numeral 11 denotes a door that covers the front of the cleaning tank 2 so that it can be opened and closed.
At its lower part, a packing A12 facing the front end of the bottom surface of the cleaning tank 2 with a small gap at the time of closing the door is mounted, and packing B13 contacting the door 11 is mounted on both the left and right sides and the upper part of the cleaning tank 2. I have. 14 is a control device provided in the door 11, 15
Is a water level detecting device for detecting the water level in the washing tank 2, and 16 is an overflow detecting device for detecting overflow from an overflow port 17 provided on the front wall of the washing tank 2.

In the above configuration, the washing water is supplied into the washing tank 2 by the water supply device 18, and the water level is detected by the water level detection device 15 and supplied to the set water level. When the water supply is completed, a series of operations of washing, rinsing, and drying are performed. If the water level in the washing tank 2 becomes abnormally high for some reason during the series of operations including the water supply, the overflowing washing water is caused to flow from the overflow port 17 into the overflow detecting means 16 and the control device is controlled. The operation of the dishwasher is stopped by 14, the drain pump 19 is operated at the same time, and an abnormality is notified.

In such a conventional dishwasher, when the water level in the washing tank 2 becomes abnormally high, the washing water overflows from an overflow port 17 provided in the front wall of the washing tank 2. Because of the necessity, the sealing between the packing A12 of the door 11 and the front end of the bottom of the cleaning tank 2 cannot be completely completed when the door is closed, and a small gap is provided. Therefore, when the blower fan 9 is operated during drying, there is a problem that steam leaks from the gap.

In recent years, dishwashers are often built into system kitchens and the like, and an exhaust port provided at the top of the main body 1
If steam leaks from a part other than 10, there is also a problem that steam is applied to a door material of an adjacent kitchen and corrodes the door material.

The present invention solves the above-mentioned problems, and when an abnormal water level is reached, washing water flows into an overflow port provided on the front wall of the washing tank, and steam does not leak during drying. It is intended to provide.

Means for Solving the Problems In order to achieve the above object, the dishwasher of the present invention forms a water reservoir at the front end of the bottom surface of the washing tank, and the bottom of the water reservoir in the water reservoir. With a small gap, the front end of the water seal packing of the door faces, and when the door is closed, a trap is formed by the water reservoir and the water seal packing of the door.

Further, the trap is partially formed at a front end of a bottom surface of the cleaning tank.

Further, when the door is closed, the sealing packing of the door comes into contact with the front end of the bottom surface of the cleaning tank except for the trap formed partially.

Action The dishwasher of the present invention has the above-described configuration, and the trap is formed by the water reservoir and the water-sealing packing.
If the water level in the washing tank becomes abnormally high, the washing water flows into the overflow port through the small gap between the bottom of the water reservoir and the tip of the water seal packing, and the trap moves inside and outside the washing tank during drying. Since the sealing is performed, the leakage of steam from the lower end of the door can be eliminated.

Embodiment Hereinafter, an embodiment of the dishwasher of the present invention will be described with reference to FIGS. 1 and 2. FIG.

Since the structure of the dishwasher is the same as that shown in the conventional example, the description thereof will be omitted, and only the main part of the present invention will be described.

FIG. 1 shows a first embodiment of the present invention. As shown in FIG. 1, reference numeral 20 denotes a cleaning tank, and a water reservoir is provided at a front end 21 of the bottom surface.
22 is formed over the entire width of the washing tank 20. Pool 22
The front wall 23 has an overflow port for allowing overflow to flow into the overflow detection means 16.
24 are arranged. The overflow port 24 is provided at a position higher than a distal end 25a of a water seal packing 25 described later. Reference numeral 26 denotes a door, and a water seal packing 25 is attached to a lower portion 27 of the door 26. The tip 25a of the water seal packing 25 faces the inside of the water reservoir 22 with a small gap g with the bottom surface 22a of the water reservoir 22 when the door is closed, and escapes from the water reservoir 22 when the door is closed.

In this manner, the trap T is formed by the water seal packing 25 attached to the lower portion of the door 26 and the water reservoir 22 formed at the front end 21 of the bottom surface of the cleaning tank 20.

In the above configuration, in the washing tank 22, the washing water is supplied to a water level higher than the water reservoir 22 and lower than the overflow port 24, and a series of operations is started. If the water level in the washing tank 20 becomes abnormally high during operation including the water supply for some reason, the washing water flows through the small gap g of the trap T, enters between the water seal packing 25 and the front wall 23, and eventually overflows. The water reaches the outlet 24, flows into the overflow detecting means 16 from the overflow port 24, and the operation is stopped as in the conventional example.

Next, in the drying step, the washing water in the washing tank 20 is drained at the end of the rinsing step which is the preceding step, so that the water remains in the water reservoir 22 and the trap T is filled with water. Is maintained in a water-sealed state.

In this state, the drying process is started, and the blower fan 9 is operated to discharge the steam in the washing tank 20 to the outside of the machine. However, since the lower part of the door 26 is sealed with the trap T, the steam is discharged from this portion. Will not leak out.

FIG. 2 shows an embodiment of the present invention. As shown in FIG. 2, a trap T constructed in the same manner as in the first embodiment is partially formed in a part of the horizontal width of the cleaning tank 20, for example, in the center. Has been established.
Except for the trap T, for example, front end portions 21a of the bottom surfaces on both sides of the trap T are connected to the front wall 23 without forming a water reservoir. In addition, the lower part 27 of the door 26 is provided with a water seal packing 25 constituting a partially formed trap, and at the time of closing the door, the water end is brought into contact with the front end part 21a of the bottom face in which the water reservoir is not formed, thereby cleaning A sealing packing 28 for sealing the inside and outside of the tank 20 is mounted.

In the above configuration, the operation of the trap T when the water level of the washing water becomes abnormally high is the same as that of the first embodiment, and the description thereof will be omitted.

In the drying step, the washing water in the washing tank 20 is drained at the end of the rinsing step which is the preceding step.
, The trap T is maintained in a water-sealed state by the water-sealing packing 25. And trap T
Sealing packing 2 is provided on the front end 21a of the bottom of the cleaning tank 20 except for
Since the abutment 8 is in contact, the inside and outside of the cleaning tank 20 are sealed by this abutment.

In this state, the drying process starts and the blower fan 9 is operated.
Although the steam in the cleaning tank 20 is discharged outside the machine, the lower portion of the door 26 is sealed with a trap T and sealed with a sealing packing 28, so that the steam leaks from this portion. Never.

As is clear from the above description of the embodiment, according to the present invention, by forming a trap with the water reservoir and the water seal packing, when the water level in the cleaning tank becomes abnormally high. Washing water flows into the overflow port from the gap between the bottom of the water reservoir and the tip of the water seal packing, and when drying, the trap water seals the inside and outside of the washing tank, eliminating steam leakage from the bottom of the door. can do.

In addition, by partially forming the trap at the front end of the bottom of the washing tank, it is possible to reduce the amount of washing water stored in the water reservoir, to seal the inside and outside of the washing tank, and to end dishwashing. Since less water remains, cleaning is easy and sanitary.

As described above, when the water level in the washing tank becomes abnormally high, it is possible to reliably detect the abnormality, and to provide a dishwasher in which steam does not delay from the lower part of the door during drying. it can.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a main part of a dishwasher according to a first embodiment of the present invention, FIG. 2 is a side cross sectional view of a main part of the dishwasher according to the second embodiment, and FIG. It is a sectional side view of the conventional dishwasher. 1 ... body, 6 ... washing nozzle (washing means), 20 ... washing tank, 21 ... front end of bottom surface, 22 ... water reservoir, 22a ...
Bottom of water reservoir, 23 front wall, 24 overflow port, 25 water seal packing, 25a tip, 26 door, 27 bottom door, 28 seal packing, T ……trap.

Claims (3)

(57) [Claims] 1. A box-shaped washing tank having a front opening and a washing means disposed therein, a main body in which the washing tank is provided, and an opening of the washing tank which is openably and closably covered. A door provided with a sealing packing; and an overflow detecting means for detecting overflow from an overflow port provided on a front wall of the washing tank, and a water reservoir is formed at a front end of a bottom surface of the washing tank. With
In the water reservoir, the bottom of the water reservoir is provided with a gap and the front end of the water seal packing of the door is faced.When the door is closed, a trap is formed by the water reservoir and the water seal packing of the door. Dishwasher. 2. The dishwasher according to claim 1, wherein the trap is partially formed at the front end of the bottom of the washing tank. 3. The sealing packing of the door is brought into contact with the front end of the bottom of the cleaning tank except for the trap when the door is closed.
Dishwasher as described.