JP3429468B2 - Dishwasher - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dishwasher.

[0002]

2. Description of the Related Art Conventionally, there has been known a dishwasher in which a washing tank for washing dishes contained therein is provided so as to be freely drawn out from a housing. The washing tank includes a washing mechanism such as a washing nozzle and a washing pump for washing dishes, and when the washing tank is pulled out from the housing, the upper portion of the washing tank is opened to take in and out dishes. . The housing is provided with a closing plate that watertightly closes the upper part of the cleaning tank when the cleaning tank is accommodated, and prevents water from leaking from the upper part of the cleaning tank during the cleaning operation.

Further, the upper edge of the rear end of the cleaning tank is slidably contacted with the closing plate when the cleaning tank is pulled out from the housing, and water adhering to the closing plate is wiped off and collected in the cleaning tank. A sliding blade made of rubber is provided. This allows
When the cleaning operation is finished and the dishes inside the cleaning tank are taken out, water is prevented from dripping from the closing plate.

Further, in the housing, there are provided respective pipes such as a water supply pipe connected to a cleaning tank for supplying cleaning water and a drain pipe for draining water. Each pipe can be supplied and drained without hindering the drawing operation of the cleaning tank, for example,
It is attached with sufficient slack.

By the way, when the sliding contact blade is worn or deteriorated when the dishwasher is used for a long period of time, the water adhering to the closing plate cannot be sufficiently wiped off, and the blockage is blocked. The water remaining on the plate drips on the bottom plate of the housing exposed by pulling out the washing tank. Further, even if an unexpected water leak occurs from the water supply pipe, the drain pipe, the connecting portion thereof, or the like, the leaked water then flows down onto the bottom plate of the housing.

Therefore, a sensor for detecting water accumulated at the bottom of the housing and an informing means for informing that water has leaked in accordance with the water detection of the sensor are provided to replace the sliding contact blade and each pipe. It is designed to prompt the user to repair.

However, in this type of dishwasher,
Generally, the volume of the cleaning tank and the piping space below the cleaning tank are both large, and the amount of water that can be stored on the bottom plate of the housing is small. For this reason, the water on the bottom plate of the housing becomes full within a short time after the water leakage occurs, and if the dishwasher is inadvertently moved during the replacement work of the sliding contact blade or the repair work of each pipe. Water that collects at the bottom of the housing may spill and wet the floor. Further, there is an inconvenience that the drainage treatment of water accumulated on the bottom plate of the housing due to water leakage is troublesome.

[0008]

In order to solve such inconvenience, the present invention can perform the replacement work of the sliding contact blades and the repair work of each pipe in the case of water leakage without wetting the floor. Moreover, it is an object of the present invention to provide a dishwashing device that can easily perform drainage treatment of leaked water.

[0009]

In order to achieve such an object, the present invention provides a housing for accommodating a washing tank for washing dishes, and an opening at the top of the washing tank pulled out from the housing. When the cleaning tank is housed in the housing, a closing plate that closes the cleaning tank when the cleaning tank is accommodated, and a rear end upper edge of the cleaning tank that is provided when the cleaning tank is pulled out from the housing In a dishwasher comprising a sliding contact blade slidably contacting the closing plate and wiping off water adhering to the closing plate to collect in a cleaning tank, the dish washing machine faces the closing plate through the cleaning tank and stands up at a peripheral edge. A tray-shaped water receiving pan having a peripheral wall is provided at the bottom of the housing so as to be freely drawn out.

According to the dishwasher of the present invention, when the washing tank is pulled out from the housing, the sliding contact blade slides against the closing plate to wipe off the water adhering to the closing plate and drip it into the washing tank. . At this time, if the water adhering to the closing plate by the sliding contact blade is not sufficiently wiped off, the water droplets dropped from the closing plate are replaced by the water provided on the bottom plate of the housing facing the closing plate. It can be received by the pan. Further, since the water receiving pan is provided so as to be freely drawn out from the housing, when water is collected in the water receiving pan, the water receiving pan can be drawn out to easily remove the water collected in the water receiving pan. .

Thus, for example, the water accumulated in the water receiving pan can be removed prior to the replacement work of the sliding contact blades, so that even if the dishwasher is moved, the floor of the sliding contact blades can be removed without getting wet on the floor. The replacement work can be performed smoothly. In addition, in the present invention, the water receiving pan may be provided so as to cover the entire bottom plate of the housing. In this case, water leakage from each pipe for water supply and drainage provided inside the housing may occur. Even if there is, it can be reliably received by the water receiving pan, so that repair work or the like of each pipe can be performed without getting the floor wet.

In the dishwasher of the present invention,
Water that is provided in the housing so as to be movable between a position facing the inner side of the peripheral wall of the water receiving pan and a position higher than the peripheral wall, and faces the inner side of the peripheral wall of the water receiving pan to collect water on the water receiving pan. And a moving means for moving the water detecting means to a position higher than the peripheral wall of the water receiving pan according to the movement of the water receiving pan when the water receiving pan is pulled out from the housing. And a notification unit for notifying a water leak according to the detection of the water by the water detection unit.

By providing the water detecting means and the notifying means, it is possible to notify the user of the water dripping from the closing plate due to the deterioration of the sliding contact blade and the water leakage due to the defect of each pipe or the like. The user can be urged to replace the sliding contact blade and repair each pipe and the like.

Since the water detecting means is moved to a position higher than the peripheral wall of the water receiving pan by the moving means when the water receiving pan is pulled out, the peripheral wall and the water detecting means interfere with each other. Without, you can pull out the water pan. Thus, the water detecting means can be provided very close to the bottom surface of the water receiving pan at a position facing the inner side of the peripheral wall of the water receiving pan, and a small amount of water on the water receiving pan can be detected.

As one mode of the moving means, a support portion extending from the rear wall of the housing to above the water receiving pan and a swingable portion in the up-and-down direction via a rotation shaft on the support portion. An oscillating member pivotally supported, a water detecting means holding portion which is connected to a tip end portion of the oscillating member and holds the water detecting means above the water receiving pan, and the water detecting means through the rotating shaft. An abutting portion that is connected to the rear end portion of the swinging member located on the opposite side of the means holding portion and abuts against the peripheral wall of the rear end of the water receiving pan, and the corresponding contact portion of the rear end portion of the water receiving pan. When the peripheral wall at the rear end of the water receiving pan separates from the corresponding contact part, the water detecting means is elastically pushed above the water receiving pan via the water detecting means holding part. And a biasing means for separating them.

According to the moving means having the above construction, first, when the water receiving pan is pulled out from the housing, the peripheral wall at the rear end of the water receiving pan separates from the abutting portion. As a result, the regulation of the contact portion is released, and the biasing force of the biasing means is released. Then, the swinging member is swung by the biasing means via the rotating shaft, and the water detecting means is moved to a position higher than the peripheral wall of the water receiving pan via the water detecting means holding portion.

When the water receiving pan once pulled out is pushed back into the housing, the peripheral wall at the rear end of the water receiving pan presses the contact portion against the urging force of the urging means.
Along with this, the rocking member rocks via the rotary shaft, and the water detecting means is moved inward of the peripheral wall of the water receiving pan.

As described above, according to the moving means, the structure is simply arranged such that the water detecting means faces the inner side of the peripheral wall of the water receiving pan in accordance with the drawing operation of the water receiving pan and the position higher than the peripheral wall. It is possible to move between them, and it is possible to reliably prevent interference between the peripheral wall of the water receiving pan and the water detecting means.

[0019]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view schematically showing the structure of the dishwasher of the present embodiment, FIG. 2 is an explanatory view showing the structure and operation of a closing plate, and FIG. FIG.

As shown in FIG. 1, the dishwasher 1 of this embodiment includes a housing 2 having an open front side, and a washing tank 3 that can be drawn out from the housing 2. The cleaning tank 3 accommodates the tableware X supported by the tableware basket W therein and cleans the tableware X. The cleaning tank 3 is integrally provided with a cleaning nozzle 4 for spraying cleaning water on the dishes X and a cleaning pump 5 for supplying cleaning water to the cleaning nozzle 4. A flexible drain hose 6 is connected to the cleaning pump 5 via a drain valve (not shown), and the end of the drain hose 6 is drained via a rear wall plate 2a of the housing 2 (not shown). Connected to the pipe. A flexible water supply hose 7 is connected to the rear wall 3a of the cleaning tank 3, and the tip of the water supply hose 7 is connected to a water pipe (not shown) via the rear wall plate 2a of the housing 2. Has been done. The water supply hose 7 and the drain hose 6 maintain the connection between the cleaning tank 3 and the rear wall plate 2a of the housing 2 even when the cleaning tank 3 is pulled out.
When stored in the housing 2, it is stored in a bent state in the space between the cleaning tank 3 and the rear wall plate 2a of the housing 2.

Further, at the upper part of the cleaning tank 3, there is formed a loading / unloading port 8 which is opened when the cleaning tank 3 is pulled out from the housing 2 so that the tableware X can be loaded / unloaded. The inlet / outlet port 8 is closed by a closing plate 9 provided inside the housing 2 when the cleaning tank 3 is housed inside the housing 2. As shown in FIG. 2A, the closing plate 9 is supported on both side wall plates 2b (see FIG. 1) of the housing 2 so as to be vertically movable via a plurality of rotation supporting members 10. Further, the closing plate 9 is the upper wall plate 2c of the housing 2.
A pulling spring 12 having one end connected to a beam member 11 provided below (see FIG. 1) is biased in the upward movement direction. A pressing portion 13 extending downward is formed at a rear end portion of the closing plate 9. The pressing portion 13 is the cleaning tank 3
Is housed inside the housing 2, it is pressed by the collar-shaped portion 3b provided at the rear end of the cleaning tank 3,
The cleaning tank 3 is closed by tightly adhering to the inner circumference of the inlet / outlet port 8 via a packing 14.

Then, as shown in FIG. 2B, when the cleaning tank 3 is pulled out from the housing 2, the pressing of the pressing portion 13 by the collar-shaped portion 3b is released, and the pulling spring 12 urges it to close. The plate 9 moves upward and separates from the cleaning tank 3.

Further, as shown in FIG. 2 (c), a sliding blade 15 made of rubber which is in sliding contact with the lower surface of the closing plate 9 is provided at the rear edge of the inlet / outlet port 8 of the cleaning tank 3. . When the cleaning tank 3 is pulled out, the sliding contact blade 15 slides on the lower surface of the closing plate 9 to wipe off the cleaning water adhering to the lower surface of the closing plate 9 and drop it into the cleaning tank 3 to collect it.

Further, as shown in FIG. 1, a tray-shaped water receiving pan 16 is provided on the bottom wall plate 2d of the housing 2 located below the cleaning tank 3 so as to be drawn out. The water receiving pan 16 includes a flat bottom plate portion 16a and a peripheral wall 16b standing upright along the outer peripheral edge of the bottom plate portion 16a. A water leak detection sensor (water detection means) 17 is provided above the rear part of the water receiving pan 16. The water leak detection sensor 17 is connected to a notifying means (not shown), detects water accumulated in the water receiving pan 16 and notifies the user of the water leak. Further, the water leak detection sensor 17 has the water leak detection sensor 17 at a position which prevents interference with the peripheral wall 16b at the rear end portion of the water reception pan 16 when the water reception pan 16 is pulled out or pushed in as described later. The moving means 18 for moving is provided.

As shown in FIG. 3A, the moving means 18 is provided with a support portion 19 extending horizontally from the rear wall plate 2a of the housing 2 and a rotary shaft 20 on the support portion 19. The swing member 21 is swingably supported. The swinging member 21 extends horizontally and has a sensor holding portion 22 for supporting the water leak detection sensor 17 at its tip, and the sensor holding portion 2
2 and a pressing portion 23 extending downward from the rear end of the spring 2, which is externally inserted to the rotary shaft 20 and biases the swinging member 21 in a clockwise (clockwise) rotational direction in the drawing (biasing). Means) 24. FIG. 3A shows the pushed state of the water receiving pan 16 (during normal cleaning operation), and the rear end portion 16 c of the peripheral wall 16 b of the water receiving pan 16 has the pressing portion 23 of the swinging member 21. When pressed, the water leak detection sensor 17 faces the inner side of the peripheral wall 16b of the water receiving pan 16 so that the water in the bottom plate portion 16a can be detected.

When the water receiving pan 16 is pulled out, as shown in FIG. 3B, the peripheral wall 16b of the water receiving pan 16 is pulled out.
The pressing of the pressing portion 23 of the rocking member 21 by the rear end portion 16c is released, and the spring 24 urges the water leak detection sensor 17 upward. Thereby, the water leak detection sensor 1
7 is located above the peripheral wall 16b of the water receiving pan 16 to prevent interference with the peripheral wall 16b. As described above, if the moving means 18 is provided, not only the interference between the water receiving pan 16 and the water leak detection sensor 17 is prevented but also the tip (lower end in the figure) of the water leak detection sensor 17 is It can be positioned near the upper surface of the bottom plate portion 16a of the pan 16 and can reliably detect even a small amount of water accumulated in the water receiving pan 16.

By providing the water receiving pan 16, for example, when the sliding contact blade 15 is deteriorated and the cleaning water adhering to the closing plate 9 is insufficiently wiped off, the water droplets falling from the closing plate 9 In addition, it is possible to receive water leakage from the cleaning pump 5 of the cleaning tank 3 and the connection portions of the hoses 6 and 7.

The water accumulated in the water receiving pan 16 is
The water leak detection sensor 17 detects the water leak, and a notifying means (not shown) notifies the user that the water leak has occurred. Here, as shown in FIG. 1, the water receiving pan 16 is
Since it can be pulled out forward and the water accumulated in the water receiving pan 16 can be discarded at an early stage, overflow or the like due to excessive accumulation of water can be prevented. Moreover, when replacing the sliding contact blade 15 or repairing water leakage of the cleaning pump 5 or the hoses 6 and 7, water accumulated in the water receiving pan 16 in advance can be discarded, and even if the entire dishwasher 1 is moved during work. Since the leaked water does not spill from the bottom of the housing 2 and wet the floor, the work can be performed smoothly.

Further, when water leaks, the water accumulated in the water receiving pan 16 is temporarily discarded, and the water receiving pan 16 is returned to the housing 2 again, so that the position of the water drop dripping on the water receiving pan 16 Therefore, the location of water leakage can be easily determined, and the repair work can be smoothly performed. Further, since the user can pull out the water receiving pan 16 to remove the contamination such as the house dust adhering to the water receiving pan 16, the detection accuracy of the water leak detecting sensor 17 can be maintained in a high state.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a configuration of a dishwasher according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing the configuration and operation of a closing plate.

FIG. 3 is an explanatory diagram showing the configuration and operation of an interference prevention unit of the water detection unit.

[Explanation of symbols]

X ... tableware, 1 ... dishwasher, 2 ... housing, 2a ...
Rear wall plate (rear wall), 2d ... Bottom wall plate (bottom part), 3 ... Cleaning tank,
8 ... inlet / outlet port, 9 ... closing plate, 15 ... sliding contact blade, 1
6b ... peripheral wall, 16 ... water receiving pan, 17 ... water leak detecting sensor (water detecting means), 18 ... moving means, 19 ... support part, 2
0 ... Rotating shaft, 21 ... Oscillating member, 22 ... Sensor holding portion (water detecting means holding portion), 23 ... Pressing portion (contact portion), 24 ... Spring (biasing means).

Claims (3)

(57) [Claims] 1. A housing for accommodating a washing tank for washing dishes, which can be drawn out freely, a loading / unloading opening for dishes which is opened at an upper portion of the washing tank drawn out from the housing, and the washing tank is accommodated in the housing. At this time, a closing plate that closes the inlet / outlet port and an upper edge of the rear end of the cleaning tank is provided, and when the cleaning tank is pulled out from the housing, the sliding plate comes into sliding contact with the closing plate to wipe off water adhering to the closing plate. In a dishwasher equipped with a sliding contact blade for collecting and collecting in a cleaning tank, a tray-shaped water receiving pan having a peripheral wall standing upright at a peripheral edge facing the closing plate through the cleaning tank is provided at the bottom of the housing. A dishwasher that can be pulled out freely. 2. The water receiving pan is provided in the housing so as to be movable between a position facing the inner side of the peripheral wall of the water receiving pan and a position higher than the peripheral wall, and facing the inner side of the peripheral wall of the water receiving pan. Water detecting means for detecting water accumulated above, and when the water receiving pan is pulled out from the housing, the water detecting means is moved to a position higher than the peripheral wall of the water receiving pan according to the movement of the water receiving pan. 2. The dishwasher according to claim 1, further comprising: moving means for moving the water and notifying means for notifying a water leak according to the detection of the water by the water detecting means. 3. The moving means is supported by a support portion extending from a rear wall of the housing above the water receiving pan, and is pivotally supported by the support portion in a vertical direction via a rotation shaft. An oscillating member, and a water detecting means holding portion that is connected to the tip of the oscillating member and holds the water detecting means above the water receiving pan.
An abutting portion that is connected to the rear end portion of the swinging member located on the opposite side of the water detecting means holding portion via the rotation shaft and abuts on the peripheral wall of the rear end of the water receiving pan, and the corresponding contact portion. Is urged in a direction of pressing against the peripheral wall of the rear end of the water receiving pan, and when the peripheral wall of the rear end of the water receiving pan separates from the contact portion, the water detecting means is watered through the water detecting means holding portion. The dishwasher according to claim 2, further comprising a biasing unit that elastically separates the receiving pan upward.