JP4676347B2

JP4676347B2 - dishwasher

Info

Publication number: JP4676347B2
Application number: JP2006026435A
Authority: JP
Inventors: 義和榛地; 衞池島; 裕谷口
Original assignee: パナソニック株式会社
Priority date: 2006-02-03
Filing date: 2006-02-03
Publication date: 2011-04-27
Anticipated expiration: 2026-02-03
Also published as: CN101011230B; CN101011230A; JP2007202876A; KR20070079918A; KR100802784B1

Description

The present invention relates to a dishwasher for cleaning by irradiating washing water onto an object to be cleaned such as dishware.

As shown in FIG. 4, the dishwasher basically includes a dishwasher main body 20, a water supply hose 3 and a drainage hose 13 drawn out from the housing 5, and the dishwasher is installed at a predetermined place. In addition, the water supply hose 3 can be used by connecting the water supply hose 3 to the water supply pipe 18 such as a water pipe and the drainage hose 13 to the drainage pipe 19. The dishwasher main body 20 can wash the object 9 such as tableware using water or hot water supplied from the water supply hose 3, and polluted water generated by the washing can be discharged from the drain hose 13 to the drain pipe 19.

The water supplied through the water supply hose 3 is controlled to be opened and closed by the water supply valve 4 so that the required amount is supplied to the washing tub 2 provided in the dishwasher main body 20 at the required timing. The stored water is mixed with a detergent and heated by a heater 8 to a temperature suitable for cleaning, and used as cleaning water for cleaning the article 9 to be cleaned. This cleaning water is sucked up by a cleaning pump (not shown), sprayed to the object to be cleaned 9 from the rotating cleaning nozzle 7, and the cleaning water that has cleaned the object to be cleaned 9 returns to the cleaning tank 2 again by circulating the cleaning water. Washing is performed.

The object to be cleaned 9 is placed on the tableware basket 10 configured to be arranged in the cleaning tank 2 so that the cleaning water from the cleaning nozzle 7 is effectively jetted, and opens and closes the front surface of the cleaning tank 2. By opening the door 11, the tableware basket 10 can be pulled out to the outside of the front surface, and the article 9 to be cleaned can be easily put in and out.

Since the discharge port through which the water supply hose 3 drawn out from the housing 5 opens into the cleaning tank 2 needs to have a certain height or more with respect to the overflow surface of the product, the outlet from the housing 5 is the housing as shown in the figure. 5 is set above, and the water supply valve 4 is arranged inside thereof. Further, the drainage hose 13 also needs to be raised so that the washing water stored in the cleaning tank 2 does not escape to the outside so that the pipe line is positioned above the stored water surface. The lead-out portion from 5 is set above the housing 5. The front end of the water supply hose 3 drawn out from the housing 5 is connected to a water stop cock 17 provided at the end of the water supply pipe 18 using a connection member 16, and the front end of the drain hose 13 is connected to a drain pipe 19. (See Patent Document 1).

In the configuration of the water supply / drainage pipe as described above, if there is a malfunction in the connection state of the water supply / drainage pipe or damage to the hose, water leakage may occur. Leakage may cause damage such as generation of rust and damage to the floor surface on which the dishwasher is installed. Therefore, it is required to provide means for preventing water leakage and detecting the occurrence of water leakage.

There is known a dishwasher provided with a means for detecting water leakage from a water supply pipe (see Patent Document 2). A water supply hose is connected to a water supply valve disposed on the back of the housing, and the water supply valve and the water supply A water reservoir case is provided at the lower part of the connection with the hose, and water leaking from the connection part is stored in the water reservoir case. When the stored water level reaches the abnormal water level, the abnormal water level detection means can detect the water level. ing.
Japanese Patent Laid-Open No. 2003-210378 Japanese Patent Laid-Open No. 09-038013

Dishwashers are installed with pipe connection work for water supply and drainage at the time of installation, and the installation work is left to the contractor's hand, so if the dishwasher is functioning properly, it will be installed The dishwasher will be defective. In particular, inadequate water supply and drainage pipe connections will cause problems such as water leakage that can damage buildings. Therefore, it is required to take measures to minimize the occurrence of damage caused by inadequate pipe connection.

The possibility of water leakage from the water supply pipe line may be due to the fact that the hose itself was damaged during the installation work as well as the connection part of the water supply hose as described above. It is necessary to assume that water leakage may occur in the water supply line from the site to the washing tank in the dishwasher.

In addition, since the water supply valve is provided in the dishwasher body, the water pressure from the water supply pipe is applied to the water supply line from the water supply pipe to the water supply valve even when the dishwasher is not used. Even a small amount of water leakage will always continue, and the impact on the building, such as the installation floor, will be significant. In addition, the portion where water leakage may occur is the back side of the dishwasher, and it is difficult for the user to notice the water leakage.

However, in the configuration in which the above-described conventional water reservoir case is provided, there is a problem that only water leakage from the connection portion between the water supply hose and the water supply valve can be dealt with and cannot be detected until a considerable amount of water leaks.

An object of the present invention is to provide a dishwasher provided with means for detecting leakage while suppressing the influence of leakage from a water supply pipeline.

Washing machine according to the present invention for achieving the above object, the water supply valve is provided in the vicinity of the connection position between the water supply pipe of the water supply hose connected to the water supply pipe is drawn from within the housing of the dishwasher main body, wherein A water receiver is disposed under a pipe connection portion connecting the water supply hose, the water supply valve, a stop cock provided at an end of the water supply pipe, and the water supply pipe, and the water receiver Provided with a water leak detection means, and further provided with an upper lid that covers the upper part of the water receiver so as to surround the pipe connection portion with the water receiver , It is configured to be detectable.

According to the above configuration, since the water supply valve is disposed on the water supply pipe side of the water supply hose, the state where the water supply valve is closed, that is, the state where water is not supplied to the dishwasher body or the dishwasher is used. If there is no water flow or water pressure on the downstream side of the water supply valve, there is no possibility of water leakage at the water supply hose or its connected part. Damage caused by leakage is minimized.

According to the present invention, even when there is a deficiency in the installation work of the dishwasher accompanied by pipe connection work for water supply and drainage at the time of installation, the water supply valve is arranged at the connection part with the water supply pipe, The occurrence of water leakage can be minimized. In addition, a water receiver is disposed under a pipe connection portion connecting the water supply hose, the water supply valve, a stop cock provided at an end of the water supply pipe, and the water supply pipe, Water leakage detection means is provided in the receiver, and an upper lid that covers the upper part of the water receiver is provided so as to surround the pipe connection portion with the water receiver, so that occurrence of water leakage can be detected quickly. .

FIG. 1 shows a configuration of a dishwasher according to an embodiment, which is configured as a built-in type dishwasher installed under a kitchen counter or the like. In addition, the code | symbol shown in a figure attaches | subjects the same code | symbol to the component which is common in the structure of a prior art.

In FIG. 1, a dishwasher main body 1 is provided with a washing tub 2 in a housing 5, and the front surface of the dishwasher body 1 is configured to be freely opened and closed by a door 11. When the door 11 is opened, the tableware basket 10 disposed in the washing tub 2 can be pulled out forward, an object to be cleaned 9 such as tableware is placed on the tableware basket 10, and the tableware basket 10 is pushed into the washing tub 2. When the door 11 is closed, the object 9 can be cleaned.

A water supply hose 3 and a drainage hose 13 are drawn out from the rear surface of the housing 5, the water supply hose 3 is connected to a water supply pipe 18 such as a water pipe, and the drainage hose 13 is connected to a drainage pipe 19. One end of the water supply hose 3 opens into the cleaning tank 2, and the other end is connected to the water supply pipe 18 via the water supply valve 4. The water supply valve 4 is electrically connected to the dishwasher main body 1 by electric wiring (not shown), and is opened and closed by control means provided in the dishwasher main body 1.

The dishwasher is installed by a designated contractor, and the pipe connection of the water supply hose 3 and the drainage hose 13 drawn out from the back of the housing 5 and the electrical connection of the power cord and grounding wire are installed on the wall and floor of the installation site. After connecting to the pipe line or outlet arranged in the wall, the installation is completed by fixing the dishwasher body 1 to a predetermined installation place such as under the kitchen counter.

When the operation is started from the operation panel provided in front of the installed dishwasher, the water supply valve 4 is opened and water or hot water supplied from the water supply pipe 18 passes through the stop cock 17, the water supply valve 4, and the water supply hose 3. Water is supplied into the cleaning tank 2. When the supplied water or hot water is stored in a predetermined amount at the bottom of the washing tank 2, the water supply valve 4 is closed, and the stored water is heated to an appropriate temperature by the heater 8 and at the same time the detergent is mixed into the washing water as washing water. It is injected to the object 9 to be cleaned.

The cleaning water is supplied to the cleaning nozzle 7 by a cleaning pump (not shown), and the cleaning water sprayed from the rotating cleaning nozzle 7 is evenly sprayed on the workpiece 9 placed on the tableware basket 10 to wash out dirt. Since it returns to the bottom part of the tank 2, the to-be-cleaned object 9 is wash | cleaned by repeating circulation of wash water. The polluted water generated by the cleaning is discharged from the drain hose 13 to the drain pipe 19 when the drain pump 12 is started. Thereafter, the water supply valve 4 is opened, and rinsing is performed using the water introduced into the cleaning tank 2 from the water supply hose 3, thereby completing the cleaning of the object 9 to be cleaned.

In the above configuration, it should be noted that the water supply valve 4 disposed in the housing 5 in the prior art is disposed in the vicinity of the water supply pipe 18. By disposing the water supply valve 4 in the vicinity of the water supply pipe 18 in this way, a water flow is provided downstream of the water supply valve 4 except when the water supply valve 4 is opened and water is supplied into the cleaning tank 2. Since no water pressure is generated, the occurrence of water leakage can be suppressed to a minimum even if there is a problem in the connection portion of the water supply hose 3 or the water supply hose 3 is damaged. Moreover, when the dishwasher is not used, the occurrence of water leakage does not occur.

As mentioned above, it is indispensable to connect the water supply and drainage pipes for the installation of the dishwasher, and the installation work is left to the construction contractor. If so, the dishwasher will fail. In particular, if there is a deficiency in the connection of the water supply pipeline, there will be a problem that water leakage may cause damage to the building in the water supply pipeline where water pressure is constantly applied. Therefore, it is necessary to take measures for minimizing the occurrence of damage caused by the lack of pipe connection, and the water supply valve 4 is connected to the water supply pipe 18 as in the above configuration. By arranging it, the occurrence of water leakage can be minimized even if the pipe connection is incomplete.

In addition, as shown in FIG. 2, if a water leakage sensor (water leakage detection means) 22 is provided in the water supply valve 4, the connection between the water supply valve 4 and the water supply hose 3 or the connection between the water supply valve 4 and the water stop cock 17. Even when a malfunction occurs at a location and a water leak occurs, the user can be immediately notified of the occurrence of the water leak. Furthermore, by providing the water leakage sensor 22 in the water stop cock 17, it is possible to detect water leakage more upstream.

More desirably, as shown in FIG. 3, when a water leakage sensor 22 is provided at a position corresponding to the water supply valve 4 and the water stop cock 17, a connection line between the water supply hose 3 and the water supply pipe 18 that is most likely to cause water leakage. It is possible to detect water leakage at

In FIG. 3, the end of the water supply hose 3 is press-fitted onto the outer periphery of the hose connection tube 4b of the water supply valve 4 and is fixed in position by a fastening member such as a hose band (not shown). Since the water stop cock 17 is provided at the end of the water supply pipe 18, the connecting cylinder 4 a of the water supply valve 4 is abutted against the screw port 17 a via the ring-shaped seal member 29, and the pipe connection member 16 is screwed. When screwed into the port 17a, the flange portion of the connecting tube 4a is pressed against the stop cock 17 side by the pipe connecting member 16, so that the seal member 29 is compressed and the stop cock 17 and the water supply valve 4 are watertight. Connected to the structure. With this connection structure, a water supply pipe line from the water supply pipe 18 to the cleaning tank 2 through the water supply valve 4 and the water supply hose 3 is formed.

If a water receiver 31 is arranged under the pipe connection portion as shown in the figure and a water leak sensor 22 is provided therein, water leaks due to poor pipe connection or water leak from the stop cock 17 will occur. If there is, the leaked water falls into the water receiver 31, so that the leak is detected quickly by the leak sensor 22. In FIG. 3, the upper lid 32 covering the upper side of the water receiver 31 is effective in preventing water, foreign matter, dust and the like from entering the water receiver 31 and malfunctioning of the water leakage sensor 22. The stop cock 17 does not need to be operated after the installation of the dishwasher is completed, but it is necessary to open and close the water supply when performing a trial run, inspection, repair, etc. during the installation work. Therefore, it is desirable that the upper lid that covers the water stop cock 17 is configured so that it can be easily removed.

As is also practiced in the prior art, it is desirable to provide a water leakage sensor 15 at the lower part of the housing 5, and there is water leakage from the connection location of the cleaning tank 2 and the water supply hose 3 to the cleaning tank 2. In such a case, water leakage can be detected, and can be detected before the leaked water flows from the housing 5 to the floor.

As described above, according to the present invention, even when there is a deficiency in the installation work of the dishwasher accompanied by the pipe connection work for water supply and drainage at the time of installation, the water supply valve is arranged at the connection part with the water supply pipe Therefore, it is possible to provide a dishwasher that can minimize the occurrence of water leakage and can quickly detect the occurrence of water leakage by arranging the water leakage detection means.

Sectional drawing which shows the structure of the dishwasher which concerns on embodiment. Sectional drawing which shows the structure which provided the water leak sensor in the structure same as the above. Sectional drawing which shows the structure which provided the water leak sensor corresponding to the water supply valve and the water stop cock. Sectional drawing which shows the structure of the dishwasher which concerns on a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dishwasher main body 2 Washing tank 3 Water supply hose 4 Water supply valve 5 Housing 13 Drainage hose 15, 22 Water leak sensor 16 Piping connection member 17 Stop cock 18 Water supply piping

Claims

A water supply valve is provided in the vicinity of the connection position with the water supply pipe of the water supply hose that is pulled out of the dishwasher body and connected to the water supply pipe,
A water receiver is disposed under a pipe connection part connecting the water supply pipe and the water stop valve provided at an end of the water supply hose, the water supply valve, and the water supply pipe,
Providing a water leakage detection means in the water receiver;
Further, an upper lid is provided so as to surround the pipe connection part with the water receiver so as to cover the upper part of the water receiver, and the water leak detection means can detect the water leak of the pipe connection part. Dishwasher featuring.