JP4621601B2 - dishwasher - Google Patents

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. 6, the dishwasher basically includes a dishwasher body 20, a water supply hose 3 and a drainage hose 13 drawn out from the housing 5, and when the dishwasher is installed in 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 ( 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 prevent the occurrence of damage caused by the lack of pipe connection.

  Water leakage may be caused not only by the connection part of the water supply hose and drainage hose, but also the hose itself being damaged during the installation work, and from the connection part of the pipe and hose to the washing tank in the dishwasher body. It is necessary to assume that water leakage may occur in the water pipes that lead to it.

  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 continue to leak, 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 preventing water leaked from a water supply / drainage pipe from leaking outside. Moreover, it is providing the dishwasher provided with the means to detect a water leak.

In order to achieve the above object, the dishwasher according to the present invention is provided with a water leakage detection means in the housing of the dishwasher main body installed under the kitchen counter, and is drawn out from the back of the housing to the water supply pipe. A water supply valve in the vicinity of the water supply pipe of the water supply hose connected to the water supply hose and the water supply hose connected to the water supply hose, and a dishwasher existing at least from the inside of the water supply hose side to the water supply pipe, and Arbitrary components necessary for installation are accommodated inside, and a water-conducting tubular body having a water-tight structure and one end opened into the housing is provided. The water-conducting tubular body accommodates the water supply hose and includes a water supply valve from the housing. It is characterized by including the water-tight structure up to the connection portion with the water supply pipe .

According to the above configuration, since the water supply valve is arranged in the vicinity of the water supply pipe of the water supply hose drawn out from the back of the cabinet of the dishwasher body installed under the kitchen counter , it is downstream from the water supply valve except during water supply. Water flow and water pressure are not applied to the side, and water leakage is minimized even if there is a water leakage point. Furthermore, since it contains the components existing between the housing and the water supply pipe, including at least the water supply hose, in the water guiding tubular body, water leakage including causes due to work deficiencies in the installation work of the dishwasher Even if it occurs, the leaked water is stopped in the water guiding tubular body, and when the amount of water leakage exceeds a predetermined amount, it is guided to the water guiding tubular body and flows into the housing from one end side that opens into the housing. Since the pipe connection is generally made on the back side of the dishwasher main body, it is difficult for the user to notice even if water leaks there, but the user notices that the water leak is led to the dishwasher main body side. It becomes easy to prevent damage caused by water leakage that occurs in an invisible place. The water guide tubular body can be provided also on the drain hose side, and can cope with water leakage in the drain pipe.

Further, by providing the water leak detection means in the housing, leakage water is so guided in the casing from the water guide tubular body, it is possible to detect occurrence of leakage by leakage detecting means.

Further, the water guide tubular body houses the water supply hose Ri Contact encompass up connection portion between the water supply pipe of the water supply valve from within the housing in a watertight structure, the leakage water from the conduit connection portion of the water supply valve externally It can be accommodated in the water guiding tubular body without leaking.

  More preferably, the water conduit tubular body contains a water supply hose and includes a water stop structure provided from the inside of the housing to the discharge port of the water supply pipe in a watertight structure, thereby accompanying a water stop cock and poor connection thereof. It is possible to prevent leakage of water from being stored in the water guide tubular body and leaking outside.

Further, the other end of the water conduit tubular body is preferably formed by a covering member that wraps the water supply valve and / or the stop cock so as to be openable and closable as a structure separated from the water conduit tubular body. In addition, it is possible to easily replace or operate a water supply valve or a stop cock.

  Further, by providing the water leakage detection means in the water guide tubular body, it becomes possible to detect the water leakage when the amount of water leakage is small.

  Moreover, the water conveyance tubular body can be easily handled in the installation work of the dishwasher by forming a flexible double hose by fitting a water supply hose and / or a drainage hose.

When installing a dishwasher under a kitchen counter, it is essential to install water supply and drainage pipes that are drawn out from the back of the dishwasher chassis. Even when water leakage occurs due to poor connection or damage to the pipeline, the leakage can be prevented from leaking outside. Moreover, since the occurrence of water leakage can be detected promptly, it is possible to take measures before the damage caused by water leakage increases. Moreover, the water guide tubular body can be accommodated in the water guide tubular body without leaking water leaked from the pipe connection portion of the water supply valve.

  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 a 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 having one end opened in the cleaning tank 2 and a drainage hose 13 connected to a drainage pump 12 are drawn out from the back of the housing 5 and the water supply hose 3 is connected to a water supply pipe 18 such as a water pipe. The drain hose 13 is connected to the drain pipe 19. As shown in the figure, the water supply hose 3 and the water supply pipe 18 are connected by connecting the water supply valve 4 connected to the tip of the water supply hose 3 to a water stop cock 17 provided on the water supply pipe 18 using a pipe connecting member 16. Is made by 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 cleaning tank 2, the water supply valve 4 is closed, and the stored water is heated to an appropriate temperature by the heater 8, and the detergent is mixed to be covered as cleaning water. It is injected into the cleaning object 9.

  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 defect in the connection location of the water supply hose 3 or the water supply hose 3 is damaged. In addition, when the dishwasher is not operated, leakage of water does not occur.

  FIG. 2 shows a connection structure between the water supply hose 3 and the water supply pipe 18 of the water supply valve 4. The end of the water supply hose 3 is press-fitted onto the outer periphery of the hose connection cylinder 4 b of the water supply valve 4, and a hose band (not shown) The position is fixed by a fastening member such as. 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.

  The operation of connecting the water supply valve 4 connected to the end of the water supply hose 3 to the water supply pipe 18 is performed in the installation work of the dishwasher, but the work is left to the construction contractor. During this construction, there is no occurrence of water leakage due to inadequate tightening of the pipe connecting member 16 and insufficient pipe connection or damage to the water supply hose 3. In order to prevent the leaked water from leaking to the outside even if there is such a problem, a water guide tubular body 24 including the water supply hose 3 and the water supply valve 4 is provided in this configuration. As will be described later, the water guide tubular body 24 accommodates from the outlet portion from the housing 5 of the water supply hose 3 to the water supply valve 4 and further to the water stop valve 17 in a watertight structure.

  In order to facilitate the installation work of the dishwasher, the water supply hose 3 and the water guide tubular body 24 are required to have flexibility. Therefore, it is preferable that the water supply hose 3 and the water guide tubular body 24 are configured as a double-structure hose body with a flexible material. The water supply valve 4 side of the water guide tubular body 24 is deformed as shown in order to wrap the water supply valve 4, and the end portion is brought into close contact with the pipe connecting member 16 to form a watertight structure. With this configuration, even if water leakage occurs due to a failure in pipe connection or damage to the water supply hose 3, the leaked water is stopped in the water guide tubular body 24 and prevented from leaking outside.

  In the above configuration, the structure in which the water supply valve 4 is wrapped around the end portion of the water guide tubular body 24 is inconvenient when the water supply valve 4 needs to be inspected and repaired. Therefore, as shown in FIG. The portion that encloses the water supply valve 4 is more preferably configured as a covering member 25 that can be separated from the water guide tubular body 24.

  Unlike the water guide tubular body 24, the covering member 25 does not need to have flexibility, so that the water supply valve 4 can be separated and opened as necessary by using a structure that can be divided by resin molding. Work can also be done easily.

  More preferably, since the pipe connection portion is also present between the stop cock 17 and the water supply valve 4, both the water supply valve 4 and the stop cock 17 are wrapped in a watertight structure as shown in FIG. It becomes a more suitable structure to make it the covering member 26 that made it possible. However, it is not necessary to operate the stop cock 17 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, when covering the water stop cock 17, it is requested | required that the coating | coated member 26 should be comprised by the structure which can be opened and closed.

  FIG. 5 shows a structural example in which the water supply valve 4 and the water stop cock 17 are covered with a watertight structure by the covering member 26. The covering member 26 abuts the lower container 26a and the upper container 26b formed in a half shell that can accommodate the water supply valve 4 and the water stop cock 17 by a fitting structure, and allows the water supply hose 3 to pass through one end and to the outer periphery. A connecting cylinder 26c into which the water guide tubular body 24 is inserted is formed, and a through hole 26d through which the water supply pipe 18 passes is formed at the other end. A seal member 28 is disposed at the passage port 26d, and the lower container 26a and the upper container 26b are fitted to bring the seal member 28 into pressure contact with the water supply pipe 18 so as to pass through the water supply pipe 18.

  When the water supply hose 3 and the water supply valve 4 or the stop cock 17 are covered with the watertight tubular body 24 and the covering members 25 and 26 connected to the water supply hose 3 and the water stop cock 17 as in the above configuration, water leakage occurs in the pipe connection portion or the water supply hose 3. When it occurs, the leaked water is stopped in the water guide tubular body 24 and the covering members 25 and 26. When the amount of water leakage reaches an amount that reaches the portion of the water guide tubular body 24 drawn from the housing 5, the leaked water flows down into the housing 5. If a water leakage sensor (water leakage detection means) 15 is provided at the inner bottom of the housing 5, water leakage is detected by the water leakage sensor 15, so that the user can take measures such as inspection and repair based on the water leakage detection. .

  Since the water leak sensor 15 also supports detection when there is some water leak inside the dishwasher main body 1, a time delay occurs until water leak from the housing 5 is detected. Desirably, when water leakage can be detected in the space surrounded by the water guide tubular body 24 and the covering member 26, faster water leakage detection is possible. For that purpose, if the water leakage sensor 15 is also provided below the space surrounded by the water guide tubular body 24 and the covering member 26, the water leakage can be detected quickly. Since the water supply pipe 18 is generally located at a position close to the floor surface, if the water leakage sensor 15 is arranged in the portion connected to the floor, in this configuration, the covering members 25 and 26, the water supply pipe body 24 and the covering member 26 are surrounded. Therefore, it is possible to detect water leakage at the lowest position in the space, and to quickly detect water leakage.

  In the present embodiment described above, the water leakage countermeasures of the water supply pipe line with respect to the dishwasher main body 1 have been described. However, it cannot be said that no water leakage occurs in the drain pipe line, and a similar water leakage countermeasure structure may be provided. it can. In the case of the drainage pipe, only the drainage hose 13 drawn out from the housing 5 is connected to the drainage pipe 19, and there is no installation of devices such as the water supply valve 4 and the stop cock 17 unlike the water supply pipeline. It can implement easily by comprising in the double hose which made the water-conducting tubular body 24 insert the drainage hose 13.

  Moreover, the water guide tubular body 24 can also be configured to accommodate both the water supply hose 3 and the drainage hose 13, and can cope with water leakage from any water conduit. Further, if the electrical wiring connecting the water supply valve 4 and the water leakage sensor 15 accommodated in the water conduit tubular body 24 and the control means provided in the dishwasher main body 1 is accommodated in the water conduit tubular body 24, installation work and repair inspection can be performed. It is easy to handle, and there is no fear of damaging the electric wiring. Even after installation, the electric wiring can be protected from erosion damage caused by rats and the like, and the appearance around the piping can be improved.

  As described above, according to the present invention, it is possible to take measures against water leakage including water leakage due to incomplete installation work. Dishwashers that require installation work during installation may cause water leakage even if the dishwasher itself is functioning properly if there is a lack of work in the installation work, such as water supply or drainage pipe connection. Including the dishwasher and the components related to its installation, it can be contained in a water conduit and the leaked water can be prevented from leaking to the outside and the leak can be detected. A dishwasher with minimal damage can be provided.

Sectional drawing which shows the structure of the dishwasher which concerns on embodiment. Sectional drawing which shows the connection structure of the water supply pipe line in a structure same as the above. Sectional drawing which shows the structure of 2nd Embodiment of a water guide tubular body. Sectional drawing which shows the structure of 3rd Embodiment of a water guide tubular body. Sectional drawing which shows the structure of the coating | coated member in a structure same as the above. Sectional drawing which shows the structure of the dishwasher which concerns on a prior art.

Explanation of symbols

1 Dishwasher body 2 Washing tank 3 Water supply hose (water hose)
4 Water supply valve 5 Housing 13 Drain hose (water hose)
DESCRIPTION OF SYMBOLS 15 Water leak sensor 16 Piping connection member 17 Water stop cock 18 Water supply piping 24 Water conveyance tubular body 25,26 Cover member

Claims (5)

A water leak detection means is provided in the cabinet of the dishwasher main body installed under the kitchen counter, and a water supply hose drawn out from the back of the housing and connected to the water supply pipe and a drain hose connected to the drain pipe A water supply valve is disposed in the vicinity of the water supply pipe of the water supply hose, and at least a dishwasher existing from the housing on the water supply hose side to the water supply pipe and any components necessary for its installation are housed therein , A water conveyance tubular body having one end opened to the housing in the structure, the water conveyance tubular body including the water supply hose and including the water connection structure from the housing to the water supply pipe of the water supply valve. A dishwasher characterized by that. Water guide tubular body, dishwasher of claim 1 further encompass until stop cock provided in the outlet of the water supply pipe in a watertight structure. The other end of the water guide tubular body, said the arrangement for separating the water guide tubular body, the water supply valve and / or claim the stopcock ing formed by open encompasses covering member 1 or 2 dishwasher according to . Dishwasher according to claim 1 to 3 any one ing is provided water leak detection means to the water guide tubular body. The dishwasher according to any one of claims 1 to 4 , wherein the water conduit tubular body is formed into a flexible double hose in which a water supply hose and / or a drainage hose is fitted .

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