JP5344981B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for cleaning by washing water to be sprayed on an object to be cleaned such as tableware, and more specifically, dishwashing to wash an object to be cleaned such as tableware by sufficiently exerting the inherent cleaning performance of the detergent. Related to the machine.

  In a conventional general dishwasher, washing is performed by spraying a washing object such as dishware while dissolving the detergent in washing water (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2003-210378 (second page, FIG. 4)

  The dishwasher of Patent Document 1 cannot sufficiently wash all dirt when directly cooking and cooking that causes scorching, such as gratin and chawanmushi. For this reason, in order to improve the cleaning performance, an atomization generator is installed in the dishwasher, the cleaning liquid in which the detergent is dissolved is atomized, and the pretreatment process is performed by allowing the cleaning liquid to adhere to the object to be cleaned and improving the cleaning performance. There is something to let you do.

  However, the detergent used in the atomization generator usually has a different particle size depending on the type and components. In the conventional atomization generator consisting of an ultrasonic vibrator having a single natural resonance frequency, The diameter became almost single, and all the components of the washing water in which the detergent was dissolved could not be sprayed, and the washing performance inherent in the detergent could not be fully exhibited.

  The present invention has been made in order to solve the above-mentioned problems, and is a dishwasher capable of fully exerting the cleaning performance inherent in a detergent by spraying all the components of the washing liquid in which detergents having different particle sizes are dissolved. The purpose is to provide.

The dishwasher according to the present invention supplies cleaning water into a cleaning tub provided in the main body and having an opening for taking in and out the object to be cleaned, and the detergent is dissolved in the cleaning water to obtain a cleaning liquid. A dishwasher that sprays from a washing nozzle to wash an object to be washed in a washing tank,
An atomization generator for atomizing the cleaning liquid is provided at the bottom of the cleaning tank, and the atomization generator includes a plurality of ultrasonic vibrators having different natural resonance frequencies, and the plurality of ultrasonic vibrators are arranged in the same direction. And the respective ultrasonic transducers are vibrated to atomize cleaning liquid components having different particle diameters.

  The dishwasher of the present invention can spray all the components of the cleaning liquid in which detergents of different particle sizes are dissolved, regardless of the type and components of the detergent used, so that the cleaning performance inherent in the detergent is fully exhibited. And has excellent cleaning performance.

It is a longitudinal cross-sectional view of the dishwasher which concerns on Embodiment 1 of this invention. It is sectional drawing to which the principal part of the atomization generator of the dishwasher of FIG. 1 was expanded. It is sectional drawing to which the principal part of the atomization generator of the dishwasher which concerns on Embodiment 2 of this invention was expanded. It is sectional drawing to which the principal part of the atomization generator of the dishwasher which concerns on Embodiment 3 of this invention was expanded.

Embodiment 1 FIG.
In FIG. 1 which shows the dishwasher which concerns on Embodiment 1 of this invention, the dishwasher main body 1 is provided with the washing tank 2 inside, and the opening part 1a which takes in / out to-be-cleaned objects 8, such as tableware, in the washing tank 2 is provided. Water or hot water, which is cleaning water for cleaning the article 8 to be cleaned, is supplied into the cleaning tank 2 by the water supply valve 3. The supply of cleaning water into the cleaning tank 2 is set to an appropriate water level using a water level sensor (not shown), and water supply from the water supply valve 3 is automatically stopped. A drainage hole 4 is provided in the bottom surface 2 a of the cleaning tank 2, and a cleaning pump 5 that is connected to the drainage hole 4 and is driven by a motor is attached. A cleaning nozzle 7 provided at the lower part of the cleaning tank 2 by the cleaning pump 5. Washing water (hereinafter referred to as “cleaning liquid”) in which a detergent is added is supplied to the inside of the washing tank 2 and sprayed into the washing tank 2 to circulate. The drain hole 4 is provided with a residue filter 6 for collecting the residue.

  A heater 9 for heating the cleaning water is provided between the cleaning nozzle 7 and the bottom surface 2a of the cleaning tank 2, and the object to be cleaned 8 can be arranged in an orderly manner above the cleaning nozzle 7 so that the cleaning water can be effectively supplied. The car 10 to be ejected is provided so as to be able to be taken in and out, and the article 8 to be cleaned can be cleaned. The drain pump 11 is for discharging the dirty cleaning liquid 20 outside the apparatus. Further, the control means 12 drives and controls electrical components such as the water supply valve 3 and the cleaning pump 5.

The bottom surface 2a of the cleaning tank 2 is provided with an atomization generator 30 for atomizing the cleaning liquid 20 in which the detergent is dissolved, and is disposed in the vicinity of the side surface 2b on the opening 1a side of the cleaning tank 2, A part of the bottom surface 2a of the cleaning tank 2 is formed.
In the first embodiment, as shown in FIG. 2, the atomization generator 30 includes a first atomization generator 31 and a second atomization generator 34 arranged in parallel. The atomization generators 31 and 34 are provided with ultrasonic vibrators (atomization generation vibrators) 32 and 35 having different natural resonance frequencies, and these ultrasonic vibrators 32 and 35 are vibrated, respectively. The cleaning liquid 20 is atomized. Note that the ultrasonic transducers 32 and 35 are supported by the first support portion 33 and the second support portion 36 so as to be inclined in the same direction (in the direction of the side surface 2b on the opening 1a side), respectively. The cleaning liquid 20 is atomized by the ultrasonic transducers 32 and 35 so that the water column trajectory i is formed in the same direction (the direction of the side surface 2b on the opening 1a side). Each of the ultrasonic transducers 32 and 35 is formed in a planar shape, and forms the atomization generating surfaces 32a and 35a on the cleaning liquid 20 side (surface on the side in contact with the cleaning liquid 20).

  Here, the ultrasonic transducers 32 and 35 included in the first and second atomization generators 31 and 34 have different natural resonance frequencies as described above, and components of detergents having different particle diameters, Atomization is performed according to the natural resonance frequency of the ultrasonic transducers 32 and 35. The particle size of the detergent component ranges from a small one of about 10 μm to a large one of about 1000 μm and a very large particle size. As in the past, atomization by a single natural resonance frequency, that is, a single ultrasonic wave Atomization with a vibrator failed to atomize all active ingredients. In the first embodiment, in order to atomize the active components having large and small particle diameters, for example, the ultrasonic vibrator 32 of the first atomization generator 31 atomizes particles having a diameter of about 10 to 100 μm. The ultrasonic vibrator 35 of the second atomization generator 34 can atomize particles having a diameter of about 50 to 1000 μm, and thus the cleaning performance inherent in the detergent can be obtained. It is possible to atomize the cleaning liquid 20 that exhibits sufficiently.

Next, operation | movement of the dishwasher comprised in this way is demonstrated.
The water supply valve 3 of the dishwasher is opened to supply a predetermined amount of cleaning water into the cleaning tank 2. The cleaning water supplied in this way becomes the cleaning liquid 20 in which the detergent is dissolved by the detergent previously put into the cleaning tank 2. The cleaning liquid 20 reaches the ultrasonic transducer 32 of the first atomization generator 31 and the ultrasonic transducer 35 of the second atomization generator 34 due to the rise of the water level in the cleaning tank 2. At this stage, when the first and second atomization generators 31 and 34 are driven by the control unit 12, the ultrasonic transducers 32 and 35 vibrate, respectively. Due to this vibration, the cleaning liquid 20 in which the detergent that comes into contact with the ultrasonic vibrators 32 and 35 is dissolved vibrates and atomizes, scatters in the cleaning tank 2 and adheres to the object 8 to be cleaned. At this time, the ultrasonic transducers 32 and 35 of the first and second atomization generators 31 and 34 are such that the atomization generation surfaces 32a and 35a are inclined in the same direction. The water column trajectory generated from is directed in the same direction (a direction of the side surface 2b on the opening 1a side).

  In this way, the cleaning liquid 20 in which the detergent is dissolved is atomized, scattered in the cleaning tank 2 and attached to the object 8 to be cleaned. If left in that state, the detergent in the cleaning liquid 20 adheres to the object 8 to be cleaned. Chemically decomposes dirt. At the time of atomization, the ultrasonic vibrator 32 of the first atomization generator 31 and the ultrasonic vibrator 35 of the second atomization generator 34 are alternately vibrated to alternately atomize the cleaning liquid 20. Or the ultrasonic vibrator 32 of the first atomization generator 31 and the ultrasonic vibrator 35 of the second atomization generator 34 may be vibrated simultaneously to atomize the cleaning liquid 20 simultaneously. it can. Moreover, the atomization generator 30 can also atomize only the cleaning liquid component having a large particle diameter by the ultrasonic vibrator. The above process is called a pretreatment process of the cleaning process, and the cleaning performance is greatly improved by adding this process.

  Next, the washing | cleaning as a dishwasher is performed with respect to the stain | pollution | contamination after decomposing | disassembling specific stain | pollution | contamination with the washing | cleaning liquid 20 atomized by the above-mentioned pre-processing process. When the cleaning pump 5 is driven, the cleaning liquid 20 in the cleaning tank 2 passes through the residual filter 6 and is sucked into the cleaning pump 5 from the drainage groove 4, and is supplied to the cleaning nozzle 7 provided below the cleaning tank 2 by the cleaning pump 5. It is pumped and sprayed from the cleaning nozzle 7 to clean the object 8 such as tableware, and then returns to the drain hole 4 again. When circulating through such a path, the residue that has fallen from the object to be cleaned 8 flows into the residue filter 6 together with the cleaning liquid 20, and the residue that cannot pass through the residue filter 6 is collected by the residue filter 6. Is done. The above process is called the main cleaning process after the pretreatment process.

  In the above description, the case where the first and second atomization generating devices 31 and 34 are provided as the atomization generating device 30 and the ultrasonic transducers 32 and 35 inclined in the same direction are provided correspondingly to these. Although shown, the atomization generator 30 is not limited to two, and may be three or more.

  As described above, according to the present embodiment, in the pretreatment process of the cleaning process, the cleaning liquid 20 is applied to the object 8 to be cleaned using the atomization generator 30 provided with the ultrasonic vibrator for generating the atomization. Since it was allowed to adhere and then left to decompose the dirt, the dirt that could not be removed conventionally can also be reliably removed. And in the main cleaning process after the pretreatment process, the dirt of the object to be cleaned 8 is surely removed by temperature and mechanical force (moment of spraying the cleaning liquid from the cleaning nozzle 7). Can be done very effectively. In other words, dirt is decomposed in the pretreatment process, but the dirt decomposed in the pretreatment process cannot be cleaned by itself, and can be more reliably cleaned by applying more temperature and mechanical force in this cleaning process. It becomes.

  When using an atomization generator equipped with an ultrasonic transducer, the detergent used for this is usually different in particle size depending on the type and composition. Spraying with an atomization generator composed of a sonic transducer results in a substantially single particle size. On the other hand, in the present embodiment, in the pretreatment process of the cleaning process, the atomization generator 30 having a plurality of ultrasonic vibrators having different natural resonance frequencies does not depend on the type and components of the detergent used. Since all the components of the cleaning liquid 20 in which detergents having different particle sizes are dissolved are atomized, the cleaning performance inherent in the detergent can be sufficiently exerted, and the cleaning performance is excellent.

In this case, when simultaneously driving the respective ultrasonic vibrators of the plurality of atomization generators 30 to atomize the cleaning liquid, all components having different particle sizes can be sprayed in a short time, When each ultrasonic vibrator is driven alternately to atomize the cleaning liquid alternately, the maximum power consumption for atomization can be suppressed.
Further, when only the cleaning liquid component having a large particle diameter is first atomized by an ultrasonic vibrator that atomizes only the cleaning liquid component having a large particle diameter, a high-concentration cleaning liquid can be distributed to the object 8 to be cleaned. The cleaning performance can be further improved.

  Thus, the dishwasher provided with the atomization generator 30 according to the present embodiment can spray cleaning liquid components having different particle sizes without depending on the type and components of the detergent used. The cleaning performance can be fully exhibited and the cleaning performance is excellent.

Embodiment 2. FIG.
In the dishwasher according to the first embodiment, the water column trajectory a generated by the respective ultrasonic vibrators 32 and 35 of the first atomization generator 31 and the second atomization generator 34 of the atomization generator 30 is generated. In the second embodiment, the water column trajectory is directed in the opposite direction.
In FIG. 3, the ultrasonic transducers 32 and 35 of the first and second atomization generators 31 and 34 are supported at the ends by the first and second support portions 33 and 36, respectively, and the respective atomization occurrences are generated. The surfaces 32a and 35a are inclined in the opposite direction, that is, in both directions (left and right in FIG. 3), so that the water column trajectories a and b generated by the respective ultrasonic transducers 32 and 35 are directed in the opposite direction and do not interfere with each other. It is.

In the pretreatment step, cleaning liquid components having different particle diameters are atomized by the ultrasonic vibrators 32 and 35 of the first and second atomization generators 31 and 34, respectively. Then, the first and second atomization generators 31 and 34 cause the cleaning liquid 20 to scatter in opposite directions (a) and (b) in the cleaning tank 2, adhere this cleaning liquid 20 to the object 8 to be cleaned, and leave it in that state. . In the main cleaning process after the pretreatment process, the dirt after the specific dirt is decomposed by the cleaning liquid 20 atomized in the pretreatment process is cleaned in the main cleaning process.
Other configurations and operations are the same as in the case of the first embodiment, and a description thereof will be omitted.

  In the second embodiment, since the respective water column trajectories (a) and (b) do not interfere in the opposite direction, the maximum atomization amount of each of the ultrasonic vibrators 32 and 35 is stabilized without breaking each other water column. The cleaning liquid 20 can be spread over the entire object 8 to be cleaned.

Embodiment 3 FIG.
In the dishwasher according to the first and second embodiments, the cleaning liquid 20 is atomized by the ultrasonic vibrators 32 and 35 of the first and second atomization generators 31 and 34, respectively. In the third aspect, the cleaning liquid 20 is atomized by the common atomization generation surface of the atomization generator 30.
In FIG. 4, the atomization generator 30 has two ultrasonic transducers 37 and 38 having different natural resonance frequencies attached to the bottom surface side of a common atomization generation surface 39. The end portion of the atomization generating surface 39 is supported by the support portion 40 and is inclined in the direction of the side surface 2b on the opening portion 1a side (the left side direction in the figure) to form a part of the bottom surface 2a of the cleaning tank 2.

In the pretreatment step, cleaning components having different particle diameters are atomized from the common atomization generation surface 39 by the ultrasonic vibrators 37 and 38 of the atomization generator 30. Thus, the atomizing generator 30 causes the cleaning liquid 20 to scatter in the same direction in the cleaning tank 2, and the cleaning liquid 20 is attached to the object 8 to be cleaned and left in that state. In the main cleaning process after the pretreatment process, the dirt after the specific dirt is decomposed by the cleaning liquid 20 atomized in the pretreatment process is cleaned in the main cleaning process.
Other configurations and operations are the same as those shown in the first and second embodiments, and a description thereof will be omitted.

  In the third embodiment, since the atomization generator 30 is provided with the ultrasonic vibrators 37 and 38 on the common atomization generation surface 39, parts can be shared and the size can be reduced. It is possible to attach to the cleaning tank 2 with a simpler structure than when a plurality of atomization generation surfaces are provided, and even in this case, a plurality of atomization generation devices are provided. The same cleaning effect as that provided is achieved.

  DESCRIPTION OF SYMBOLS 1 Dishwasher main body, 1a opening part, 2 washing tank, 2a bottom surface of washing tank, 2b side surface of washing tank, 3 water supply valve, 4 drainage hole, 5 washing pump, 6 residue filter, 7 washing nozzle, 8 to-be-washed object , 9 Heater, 10 basket, 11 Drain pump, 12 Control means, 20 Cleaning liquid, 30 Atomization generator, 31 First atomization generator, 32, 35, 37, 38 Ultrasonic vibrator, 32a, 35a, 39 Atomization generating surface, 34 2nd atomization generator.

Claims (7)

The cleaning water is supplied into a cleaning tank provided in the body and having an opening for taking in and out the object to be cleaned, the detergent is dissolved in the cleaning water to obtain a cleaning liquid, and the cleaning liquid is sprayed from the cleaning nozzle by the cleaning pump, A dishwasher for washing objects to be washed in a washing tank,
An atomization generator for atomizing the cleaning liquid is provided at the bottom of the cleaning tank,
The atomization generating device includes a plurality of ultrasonic vibrators having different natural resonance frequencies, and the plurality of ultrasonic vibrators are arranged to be inclined in the same direction, and the respective ultrasonic vibrators are vibrated. A dishwasher characterized by atomizing cleaning liquid components having different particle sizes. The cleaning water is supplied into a cleaning tank provided in the body and having an opening for taking in and out the object to be cleaned, the detergent is dissolved in the cleaning water to obtain a cleaning liquid, and the cleaning liquid is sprayed from the cleaning nozzle by the cleaning pump, A dishwasher for washing objects to be washed in a washing tank,
An atomization generator for atomizing the cleaning liquid is provided at the bottom of the cleaning tank,
The atomization generator includes a plurality of ultrasonic vibrators having different natural resonance frequencies, and is configured to atomize cleaning liquid components having different particle diameters by vibrating the respective ultrasonic vibrators.
In the atomization generator, a plurality of ultrasonic vibrators having different natural resonance frequencies are disposed so as to be inclined outward, so that the water column trajectory of the cleaning liquid generated from each ultrasonic vibrator does not interfere. Dishwasher featuring. Before Kikiri of generator, dishwasher according to claim 1, characterized in that it mounted a plurality of ultrasonic transducers having a natural resonant frequency which is different to the common atomization generating surface.   4. The atomization generator is configured to simultaneously atomize cleaning liquid components having different particle diameters by simultaneously vibrating a plurality of ultrasonic vibrators having different natural resonance frequencies. 5. Dishwasher.   4. The atomization generating apparatus atomizes cleaning liquid components having different particle diameters by vibrating a plurality of ultrasonic vibrators having different natural resonance frequencies while shifting phases. Dishwasher as described in   The atomization generator vibrates an ultrasonic vibrator for atomizing a cleaning liquid component having a large particle size to atomize only the cleaning liquid component having a large particle size. The dishwasher described.   The dishwasher according to any one of claims 1 to 6, wherein the atomization generator is provided on a bottom surface of the washing tank and constitutes a part of the bottom surface.

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