JP4321360B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for washing dishes using washing water.

  Conventionally, this type of dishwasher has a configuration as shown in FIG. 10 (see, for example, Patent Document 1). Hereinafter, the configuration will be described. As shown in the figure, a cleaning tank 1 for storing objects to be cleaned such as tableware, a lid 2 for opening and closing the cleaning tank 1, a water supply valve 3 for supplying water to the cleaning tank 1, and a cleaning pump for pressurizing the cleaning water 4 and an injection means 5 having an injection port for injecting cleaning water. A user sets an object to be cleaned in the cleaning tank 1, puts a detergent into the cleaning tank 1, and a lid 2. Close and then start operation.

After the operation is started, first, the water supply valve 3 is opened to supply water into the cleaning tank 1, water is stored at the bottom of the cleaning tank 1, and after supplying a predetermined amount of water, the water supply valve 3 is closed and the cleaning pump 4 is operated. The detergent is dissolved in water to become washing water, and the washing water pressurized by the washing pump 4 is jetted from the jetting unit 5 to the washing object, and the washing object is washed.
JP 2003-339607 A

  However, in conventional dishwashers, washing is performed by spraying the washing water obtained with a predetermined amount of detergent and water, but it is not all-purpose for all stains, and it is difficult to completely wash off lipstick and terrible tea astringency. There is also dirty. This is described in the instruction manual, etc., and the user was asked to wash his hands with a sponge beforehand.

  In order to wash off such dirt, there has been a need to increase the concentration of the detergent or increase the energy of jetting such as the pressure of the washing water. In order to increase the concentration of the detergent, it is necessary to add a lot of detergent, and there is a problem that the amount of detergent used increases. Further, when the washing water injection energy is increased, the amount of water used and the amount of power consumption are increased, which causes problems such as deterioration in economic efficiency and increase in cleaning noise.

  And washing performance can be improved by performing the process of scattering washing water with high washing performance, such as high detergent concentration and high temperature, in a washing tub, and making it adhere to a thing to be washed. By using an ultrasonic vibrator, the cleaning water can be easily atomized and scattered, but this involves a phenomenon that the cleaning water rises from the surface of the water (the raised liquid is called a water column). The amount of the raised water column is much larger than the amount splashed into the washing tank, so that if the water column jumps outside the washing water storage unit, a larger amount of washing water than the amount necessary for washing is washed. Therefore, in order to obtain washing water having a predetermined high detergent concentration, there is a problem that the amount of detergent used increases.

  An object of the present invention is to solve the above-described conventional problems, and to increase the cleaning performance without increasing the amount of detergent and jet energy and to remove dirt that could not be washed conventionally.

In order to solve the above-described conventional problems, the dishwasher of the present invention includes a washing tub that accommodates an object to be cleaned such as tableware, a washing water container that contains washing water, and the washing tub by atomizing washing water. An ultrasonic vibration part that scatters inside, a lid that collects the water column raised from the water surface by the vibration of the ultrasonic vibration part in the cleaning water storage part, and a detergent input part that supplies detergent to the cleaning water storage part wherein the lid is Rutotomoni provided particulates passing portion passing through the wash water atomized on the sides the cover ultrasonic vibration portion, the particles passing portion, said for collecting the washing water holding portion It is provided on the side of the lid that is different from the part that receives the water column, and is configured to collect the raised washing water in the washing water storage part, so that it is equivalent to or more than the amount of splash required for washing, and a very small amount of washing is performed. Have the same effect if water is present If a very small amount of washing water is produced with a small amount of detergent, detergent components such as alkalis, surfactants, and bleaching agents can act on dirt at a much higher concentration than before, and remove dirt strongly. be able to.

  In addition, a lid is necessary to protect the ultrasonic vibration unit from foreign matters and dirt during operation. However, if all of the lid is covered, fine particles do not scatter in the cleaning tank. Therefore, by providing a fine particle passage part through which the atomized washing water passes on the side surface of the lid, the ultrasonic vibration part can be protected from foreign matters and dirt, and a large amount of washing water can be scattered. It is possible to obtain a higher washing performance by spreading a large amount of washing water throughout the washing tank.

The dishwasher of the present invention is a detergent component such as alkali, surfactant, bleaching agent, etc. without increasing the amount of detergent used or jetting energy even if the washing water is scattered using an ultrasonic vibration part However, it acts on dirt at a much higher concentration than before, improving the cleaning performance and removing dirt that could not be washed conventionally.

The first invention is a cleaning tank for storing objects to be cleaned such as tableware, a cleaning water storage section for storing cleaning water, an ultrasonic vibration section for atomizing cleaning water and scattering the cleaning water in the cleaning tank, A lid for collecting the water column raised from the water surface by the vibration of the ultrasonic vibration unit into the washing water storage unit ; and a detergent charging unit for putting a detergent into the cleaning water storage unit, the lid having fine particles on the side surface It turned into fine particles passing portion which washing water passes through covers Rutotomoni the ultrasonic vibrating unit provided with the fine particles passing portion is a side of said receiving the water column portions different from the cover for collecting the washing water holding portion The cleaning performance can be improved by carrying out a process in which cleaning water having high cleaning performance such as high detergent concentration and high temperature is scattered in the cleaning tank and adhered to the object to be cleaned. Even when an ultrasonic vibrator is used as a means for splashing cleaning water, it is possible to collect cleaning water that has risen from the surface of the water in the cleaning water storage unit, so that it is equivalent to or greater than the amount required for cleaning. It is sufficient if there is cleaning water, and the amount of cleaning water to be used can be suppressed to a small amount. For example, if an extremely small amount of washing water is produced using the same amount of detergent as before, detergent components such as alkalis, surfactants, and bleaching agents act against dirt at a much higher concentration than before, and are powerful. The cleaning performance can be improved without increasing the amount of detergent and the jetting energy, such as being able to remove dirt, and dirt that could not be washed conventionally can also be removed.

  A lid is necessary to protect the ultrasonic vibration part from foreign matters and dirt during operation. However, if all of the lid is covered, fine particles will not be scattered in the cleaning tank. Therefore, by providing a fine particle passage part through which the atomized washing water passes on the side surface of the lid, the ultrasonic vibration part can be protected from foreign matters and dirt, and a large amount of washing water can be scattered. It is possible to obtain a higher washing performance by spreading a large amount of washing water throughout the washing tank. Thereby, a user's washing operation can be reduced. In addition, if the amount of cleaning water to be used is small, the cleaning water storage section can be configured to be small, and the product can be downsized.

The second invention, fine particles passing portion, which has provided on the opposite side of the washing agent dispenser unit, the lid is while protecting the ultrasonic vibrating unit from detergent is introduced into the detergent dispenser, and A large amount of scattered washing water can be taken.

  A third invention is provided with a tableware basket in which an object to be cleaned such as tableware is set, and the fine particle passage part is provided so as to scatter fine particles of washing water downward from the tableware basket, and is externally provided from the lid. Even if a large amount of washing water is scattered, it is meaningless if it does not contribute to washing, and the amount of fine particles that act more effectively can be increased by scattering the washing water toward the tableware basket.

(Embodiment 1)
FIG. 1 is a main cross-sectional view of a dishwasher according to a first embodiment of the present invention, FIG. 2 is a main part cross-sectional view, and FIG. 3 is a main part plan view. In the figure, the dishwasher body 20 is provided with a washing tub 22 that can be opened and closed by a door 21, and an object to be cleaned 23 such as tableware is set in a tableware basket 24 and accommodated in the washing tub 22. The water supply valve 25 supplies cleaning water to the cleaning tank 22. The cleaning pump 26 pressurizes the cleaning water, supplies it to a cleaning nozzle 27 provided with a plurality of injection holes, and performs the first cleaning by spraying the cleaning water from the cleaning nozzle 27. The bottom of the cleaning tank 22 has a drain port 28 communicating with the suction side of the cleaning pump 26, and the drain port 28 is provided with a residue filter 29 for collecting residue. A heating element 30 for heating is provided, and a temperature sensor 31 for detecting the temperature of the cleaning tank 22 is provided. The drainage pump 32 discharges the cleaning water in the cleaning tank 22. The blower 33 sends air to the cleaning tank 22 through the blower path 34 and discharges the exhaust from the exhaust port 35.

  Inside the front edge of the opening of the cleaning tank 22 are provided with a cleaning water storage unit 36 for storing cleaning water having a high detergent concentration, and an ultrasonic vibration unit 37 for atomizing the cleaning water and scattering it. The ultrasonic vibration unit 37 includes an ultrasonic vibrator 38 that converts electrical energy into mechanical vibration, and a cover body 39 that covers the ultrasonic vibrator 38 is provided. The cover body 39 is filled with pure water, antifreeze liquid, or the like. Liquid 40 is enclosed. The ultrasonic cleaning unit 37 is driven to finely wash and scatter the cleaning water, thereby performing the second cleaning. Further, a lid 41 is provided so as to cover the ultrasonic transducer 38, and the lid 41 is provided with a detergent insertion portion 42 for introducing a detergent into the cleaning water storage portion 36. It enters into the detergent container 36 a in the container 36. In addition, a communication portion 43 that communicates between the cleaning water storage portion 36 and the cleaning tank 22 is provided by cutting out a part of the wall surface of the cleaning water storage portion 36. Here, the cover 41 covering the ultrasonic vibration unit 37 means that at least the vertical upper portion of the ultrasonic vibration unit 37 is covered.

  FIG. 4 is a perspective view of the cleaning water storage unit 36 and the lid 41 viewed from the inside of the cleaning tank 22. When the ultrasonic vibrator 38 is vibrated in water, the water surface rises and the water jumps out of the water surface. This raised washing water A (referred to as a water column) is contained in the washing water storage unit 36. It is configured to collect. The lid 41 is provided with a receiving portion 44 that directly receives the raised water column, and a washing water collection portion 45 that returns the collected washing water to the detergent charging portion 42 is integrally formed. As shown in the cross-sectional view of FIG. 5, the structure inside the lid body 41 is separated from the water surface C above the ultrasonic vibration unit 37 by a rib 46 at a position B where the recovered cleaning water lands. The bottom 47 of the detergent container 36a (below the detergent loading part 42) into which the detergent is charged is formed so that the ultrasonic vibration part 37 side (the right side in FIG. 5) is lowered. At the same time, the bottom 47 of the detergent container 36a is formed so that the position side B (the right side in FIG. 5) where the recovered washing water lands is lowered.

  As a basic operation of the dishwasher, an object to be cleaned 23 such as tableware is set in a tableware basket 24 and stored in a washing tub 22, and after the detergent is introduced, the door 21 closes the opening of the dishwasher main body 20. Start driving. A cleaning process for removing dirt from the object to be cleaned 23, a rinsing process for washing off the adhered detergent and residue, and a drying process for drying the water adhering to the object to be cleaned 23 are performed in this order.

  The operation and action of the cleaning process, which is a characteristic process of the present invention, will be described. First, the user puts the detergent into a predetermined detergent charging part 42, and the detergent enters the detergent container 36a of the cleaning water container 36. As shown in FIG. 2, various configurations are conceivable, such as a configuration in which a user directly enters the washing water storage unit 36, a configuration in which the user is transported through a passage, and a configuration in which the transport is performed in conjunction with a door closing operation. In any case, it suffices for the detergent to enter the washing water container 36. In order for the user to put the detergent in a predetermined place, it is also effective means to write “detergent container” or the like in the detergent insertion part 42 or to change the color of the surrounding parts.

  When the door 21 is closed and the operation is started, first, second cleaning is performed in which the cleaning water in the cleaning water storage unit 36 is scattered. The water supply valve 25 operates to supply water to the cleaning tank 22, and at the same time, supplies water to the cleaning water storage unit 36 through the communication unit 43. The size and water supply level of the cleaning water storage unit 36 are set so that the cleaning water storage unit 36 contains about 10 to 200 cc of detergent, preferably about 10 to 100 cc of water. When the cleaning water is circulated by the cleaning pump 26 as before, the detergent is dissolved in about 2.5 L to 4 L of water. Therefore, in the second cleaning, the first cleaning water is ejected from the cleaning nozzle 27. It is possible to generate wash water about 10 to 100 times larger than the detergent concentration of the wash water at the time of washing.

The ultrasonic vibrator 38 is vibrated, and the cleaning water container 36 is interposed via the sealing liquid 40 and the cover body 39.
The cleaning water is atomized by transmitting vibration to the cleaning water, and is scattered into the cleaning tank 22 from the openings 41 a and 41 b provided in the lid 41. Unlike conventional cleaning, since cleaning water is atomized and scattered, even when the amount of cleaning water is extremely small, such as 100 cc or less, it can be attached to the entire surface of the object to be cleaned 23, and the amount of detergent used It is possible to use cleaning water with a very high concentration without increasing the amount of water.

  However, when the cleaning water is scattered using the ultrasonic vibrator 38, the cleaning water is raised from the surface as shown in FIG. This raised cleaning water A is called a water column, and the amount of water in this water column is much larger than the amount scattered in the cleaning tank. For example, when a scattering amount of 3 cc is obtained per minute, a water column of about 200 cc is generated per minute. For this reason, when a water column jumps out of the washing water storage unit 36, a much larger amount of washing water is required than the scattering amount necessary for washing. For example, if it is operated for 10 minutes, 2 L of washing water is required, and the amount of water is not so different from that of the first washing that is conventionally performed. When a detergent amount equivalent to the conventional amount is used, a specific effect is obtained. I can't. If the washing water is collected in the washing water storage unit 36, the washing water needs only about several cc to several tens of cc necessary for atomization, and high concentration washing water can be obtained, and high washing performance can be obtained.

  Further, in the present embodiment, the communication portion 43 is provided, and when the water column is discharged to the outside of the cleaning water storage portion 36, the same amount of discharged water is discharged from the cleaning tank 22 into the cleaning water storage portion 36. Since the detergent concentration is rapidly reduced and the cleaning effect cannot be exhibited, the lid (receiving portion) 41 is provided to prevent this concentration reduction and obtain high cleaning performance. Can do.

  The particle size of the atomized cleaning water is not particularly limited. In order to spread the entire cleaning tank 22, it is desirable that the particle diameter is 100 μm or less, and if it is 20 μm or less, the cleaning tank 22 is used. A state in which fine particles drift inside can be created, and the entire surface of the object to be cleaned can be spread.

  As described above, the cleaning water with a very high concentration of several to 100 times the detergent concentration of the conventional washing water acts against the dirt, so that it reacts with the dirt by the strong action of the detergent, It can dramatically improve the cleaning performance, such as lifting dirt, and it can also clean lipstick and terrible tea astringency that could not be washed before. Further, since the cleaning power is improved, the cleaning time can be shortened and the cleaning temperature can be lowered to save energy.

  Basically, the higher the detergent concentration, the stronger the power to remove dirt, so the higher the concentration of cleaning water, the better. Even if there is a factor that inhibits cleaning at a high concentration, the first cleaning performed later does not cause any particular problem because the cleaning is performed at a detergent concentration equivalent to the conventional one. In addition, in order to produce such a high concentration of wash water using the same amount of water as before, it is necessary to use a large amount of detergent such as several to 100 times, which is preferable from the viewpoint of the economy and the global environment. It goes without saying that there is nothing.

  The lid 41 is necessary to protect the ultrasonic vibration unit 37 from foreign matters and dirt during operation or damage due to dropping of tableware, etc. In order to reduce the size of the apparatus, the lid 41 should be as small as possible. . However, if the generated water column is blocked at a short distance for the purpose of miniaturization, there is a problem that the amount of fine particles scattered is reduced. Therefore, the lid 41 is provided with an opening 41a of a predetermined size, passes through the opening 41a, discharges the water column once to the outside of the lid 41, and the wash water is supplied to the receiving portion 44 outside the lid 41. Receiving and recovering the cleaning water again in the cleaning water storage unit 36, while protecting the ultrasonic vibration unit 37, the lid body 41 is small and can generate a large amount of scattered cleaning water. It is possible to obtain a higher cleaning performance by spreading a large amount of cleaning water over the entire cleaning tank 22.

  Further, since the receiving portion 44 is provided on the lid body 41 and the positional relationship between the opening 41a and the receiving portion 44 can be accurately maintained, the recovery rate of the cleaning water at the receiving portion 44 is increased, and more necessary cleaning water is obtained. The amount of water can be reduced. Note that the receiving portion 44 can also be formed integrally with the lid body 41. Moreover, it can also provide in the tableware basket 24 other than the cover body 41, and the door body 21, or can form integrally, and the same effect is acquired.

  Further, as shown in FIG. 3, the side surface of the lid body 41 is provided with a fine particle passage portion 41b through which the atomized washing water passes, and the washing water is scattered from other than the opening portion 41a, and a larger amount of the washing water is scattered. The cleaning performance can be further improved by scattering the cleaning water into the cleaning tank. Here, the fine particle passage portion 41b is provided on the side surface opposite to the detergent charging portion 42, and the lid 41 protects the ultrasonic vibration portion 37 from the detergent charged into the detergent charging portion 42, and A large amount of scattered washing water can be taken. Further, in order to reliably collect the washing water, it is desirable to provide the water column so as not to reach the fine particle passage portion 41b, and on a different side from the portion that receives the water column for collecting the water column in the washing water storage unit 36. Although provided, it may be proximate or adjacent thereto.

  In this embodiment, there is no dedicated means for dissolving the detergent, and there is a possibility that a predetermined high concentration cannot be obtained from the beginning. However, the heating element 30 for heating the inside of the cleaning tank 22 is energized. The temperature of the cleaning water storage unit 36 is raised through the communication unit to promote the dissolution of the detergent, or the receiving unit 44 and the cleaning water recovery unit 45 are brought into contact with the detergent into which the recovered cleaning water has been introduced. By adopting a configuration to collect, it is possible to increase the concentration of the detergent, such as stirring the detergent and promoting dissolution of the detergent, and there is no problem if washing water having a predetermined concentration that exhibits a washing effect can be obtained. For example, in the present embodiment, by providing the bottom 47 of the detergent container 36a with an inclination or by providing the rib 46, the contact efficiency between the collected washing water and the detergent can be increased, and washing water with a higher concentration can be generated. I am doing so.

  In addition, the concentration of the cleaning water is maximized by completely dissolving the introduced detergent, but even if a part of the detergent remains in the cleaning water storage portion 36, the concentration of the predetermined concentration that exhibits the cleaning effect is obtained. If washing water is obtained, there is no problem.

  In order to disperse the spray water that has been atomized and scattered throughout the entire cleaning tank 22 and to adhere to the entire tableware, a means for convection of the air in the cleaning tank 22 using natural convection by heating is considered. It is done. For example, the heating element 30 for heating the cleaning tank 22 can be heated continuously or intermittently to stir the air in the cleaning tank 22 and promote the adhesion of the cleaning water to the tableware.

  As shown in FIG. 6, the concentration of the cleaning water can be increased by providing a stirrer as the detergent dissolving means 47, and the air in the cleaning tank 22 is agitated by providing a blowing means as the scattered particle driving means 48. It is also possible to improve adhesion to tableware and the like, and cleaning performance can be improved by using a higher concentration and a larger amount of cleaning water.

  After performing the second cleaning in which the high-concentration detergent liquid is atomized and scattered in the cleaning tank 22 for a predetermined time, the cleaning pump 26 is operated, and cleaning water is sprayed from the cleaning nozzle 27 to perform the first cleaning. Execute. At this time, the cleaning water and the detergent remaining in the cleaning water storage unit 36 are mixed with the cleaning water used in the first cleaning. If the cleaning water sprayed from the cleaning nozzle 27 enters the cleaning water storage portion 36, the cleaning water flows out from the communication portion 43. Therefore, the first cleaning is performed without using any special means. It becomes possible to use it.

In the first cleaning, the cleaning water is jetted to cause the mechanical force to act on the dirt, so that sufficient cleaning performance can be obtained even for the dirt that has a large mechanical force such as sticking and contributes to the cleaning. In addition, in the second cleaning performed in advance, it is possible to remove stains that have been peeled off from the tableware due to the chemical force of the detergent, and stains that have not been able to be completely removed even though the adhesion has weakened. .

  In order to obtain strong cleaning performance using only the first cleaning by the cleaning nozzle 27 equivalent to the conventional one, it is necessary to apply high energy such as increasing the water pressure of the cleaning pump 26. Although it is not preferable in terms of size and driving noise, it is not preferable, but by using both the first and second cleaning, higher cleaning performance than before can be obtained with the same cleaning pump and amount of detergent. be able to.

  In the cleaning by the first cleaning, the heating element 30 such as a sheathed heater provided in the cleaning tank 22 is energized and the cleaning water is heated as in the conventional case. Further, the temperature sensor 31 detects the temperature of the cleaning tank 22 and stops the energization of the heating element 30 when the temperature becomes higher than a predetermined temperature.

  The washing water passes through the residue filter 29 and is sucked into the washing pump 26, supplied to the washing nozzle 27 provided in the washing tank 22 from the washing pump 26, and sprayed into the washing tank 22 to wash the dishes 23. Then, it circulates along the route of returning to the drain port 28 again. At this time, the residue dropped from the tableware 23 flows into the residue filter 29 together with the washing water, and the residue having a size that cannot pass through the residue filter 29 is collected by the residue filter 29.

  When the predetermined cleaning is completed, the cleaning water containing dirt is discharged out of the apparatus by the drainage pump 32, and the cleaning process ends. Subsequently, the cleaning water is newly supplied, the cleaning pump 26 is operated, and the cleaning water is sprayed again from the cleaning nozzle 27 to perform the rinsing process of the object 23 to be cleaned, such as detergent and leftovers. After the operation for a predetermined time, the operation of discharging the cleaning water and supplying the cleaning water again is repeated, and this rinsing process is continuously performed about three times. Finally, the washing water is discharged outside the apparatus, and the rinsing process is completed.

  Subsequently, by performing a drying process and operating the blower 33, the outside air is blown into the cleaning tank 22 through the blower path 34 and is discharged from the exhaust port 35. At this time, the heating element 30 is energized, and evaporation of water droplets adhering to the object to be cleaned 23 is promoted by the effects of both air blowing and temperature. These drying steps are performed for a predetermined time, and the operation is terminated.

  In the case of scattering fine particles using the ultrasonic vibrator 38, the vibrator is generally installed in a tilted manner rather than vertically upward. When installed vertically upward, the water that protrudes from the surface of the water falls to the same place, reduces the generation of water columns, and as a result, reduces the amount of fog. .

  In addition, since the energy of the ultrasonic wave is on the generated water column, there is a risk of damage such as the lid 41 being melted. However, if the water column 44 is made of metal such as a stainless steel plate, the damage may occur. Can be prevented. Although not particularly illustrated, a metal plate can be disposed at a portion where the water column contacts, or the entire lid 41 can be made of metal, and the configuration is not particularly limited.

  The ultrasonic vibration unit 37 is configured to cover the ultrasonic vibrator 38 with the cover body 39, thereby preventing cleaning water containing detergent or dirt from directly touching the ultrasonic vibrator 38 and attaching contamination or the like. This prevents the ultrasonic vibrator 38 from becoming unable to oscillate. However, even when the ultrasonic vibrator 38 is installed so as to directly touch the cleaning water without using the cover body 39 as shown in FIG. 7, there is no problem in the function of scattering the cleaning water, and depending on the installation location and shape, It is also possible to use the ultrasonic transducer 38 by exposing it.

  In the operation sequence of the present embodiment, the second cleaning is performed before the first cleaning. First, dirt is floated by the cleaning water having a high detergent concentration, and then the machine by the cleaning pump 26 is used. By performing powerful cleaning, particularly efficient cleaning can be performed for thin dirt, but it is needless to say that higher cleaning power can be obtained for all dirt.

  Also, the arrangement and number of the cleaning nozzles 27 used in the first cleaning, the form of the rotating nozzles, etc. are not limited, and high cleaning can be achieved by arranging them on the back surface, side surface, top surface, etc. in addition to the bottom of the cleaning tank 22. Performance can also be obtained. In addition, the cleaning water is not sprayed from all the cleaning nozzles 27 at the same time, but using a water distribution means (not shown) for switching the flow path of the cleaning water between the cleaning pump 26 and the cleaning nozzle 27, It is also possible to perform the first cleaning with a small amount of water by sequentially injecting.

  The present invention relates to a washing method for a dishwasher, and does not limit the shape and size of the dishwasher body 20, the opening / closing method of the door 21, the arrangement of dishes, the arrangement of individual components, and the like. Although the configuration of a desktop type dishwasher is shown in the figure, it can also be used for a built-in type dishwasher that is attached to a sink or the like. Moreover, although the example of the dishwasher which has a drying function was shown in Embodiment 1, the same effect is acquired also in the dishwasher which does not accompany a drying function.

(Embodiment 2)
FIG. 8 is a cross-sectional view of a main part of a dishwasher according to a second embodiment of the present invention, and FIG. 9 is a plan view of the main part. It is an example at the time of making the cover body 41 into another shape. In the first embodiment, as shown in FIG. 2, the cleaning water that has jumped out of the lid 41 from the opening 41 a is received by the receiving unit 44, passes through the cleaning water recovery unit 45, and is supplied to the detergent charging unit 42 side. In FIG. 9, the cleaning water is collected in the lid 41. In addition to the fine particle passage portion 41b, a fine particle passage portion 41c for injecting fine particles downward of the tableware basket 24 is provided. In addition, the cleaning water is collected through the path 41d provided inside the lid body 41 so that the cleaning water is guided to the detergent charging unit 42 side.

  Thus, it is not limited to the structure which receives wash water on the outer side of the cover body 41, and if this is the case, a sufficient effect can be obtained if the necessary amount of wash water is scattered. The fine particle passage portion 41c is provided so that fine particles of washing water are scattered below the tableware basket 24. Even if a large amount of washing water is scattered from the lid 41 to the outside, it must contribute to washing. It is meaningless, and the amount of fine particles that act more effectively can be increased by scattering toward the tableware basket 24 side.

  As described above, the dishwasher according to the present invention can improve the cleaning performance without increasing the amount of detergent and jet energy, and can remove dirt that could not be washed conventionally. Is also applicable.

Main sectional drawing of the dishwasher of Embodiment 1 of the present invention Cross section of the main part of the dishwasher Top view of the main part of the dishwasher Perspective view of the main part of the dishwasher Cross section of the main part of the dishwasher Sectional drawing of the principal part of the other dishwasher of Embodiment 1 The principal part top view of the other dishwasher of Embodiment 1 Sectional drawing of the principal part of the dishwasher of Embodiment 2 of this invention Top view of the main part of the dishwasher Main sectional view of a conventional dishwasher

22 Washing tank 24 Tableware basket 36 Washing water storage part 37 Ultrasonic vibration part 41 Cover body 41b Particulate passage part 41c Particulate passage part 42 Detergent input part

Claims (3)

A cleaning tank for storing objects to be cleaned such as tableware, a cleaning water storage part for storing cleaning water, an ultrasonic vibration part for atomizing the cleaning water and scattering it into the cleaning tank, and vibrations of the ultrasonic vibration part A lid that collects the water column raised from the surface of the water in the cleaning water storage unit, and a detergent charging unit that puts detergent into the cleaning water storage unit, and the lid passes through the atomized cleaning water on the side surface to fine passing portion provided Rutotomoni the cover ultrasonic vibration portion, the particulate passage portion, dishwasher provided on the side surface of the portion different from the lid for receiving the water column for collecting the washing water holding portion. Fine particles pass section, Dishwasher according to claim 1, wherein provided on the opposite side of the washing agent dispenser unit. The dishwasher according to claim 1, further comprising a tableware basket in which an object to be cleaned such as tableware is set, wherein the fine particle passage portion is provided so as to scatter fine particles of washing water below the tableware basket.

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