WO2014148042A1

WO2014148042A1 - Dishwashing machine

Info

Publication number: WO2014148042A1
Application number: PCT/JP2014/001533
Authority: WO
Inventors: 識義的場; 池島　衞; 和久榎本
Original assignee: パナソニック株式会社
Priority date: 2013-03-22
Filing date: 2014-03-18
Publication date: 2014-09-25
Also published as: US20150374201A1; JP6295441B2; EP2976982A4; EP2976982A1; CN104918532A; JPWO2014148042A1; TW201507684A

Abstract

This dishwashing machine is provided with: a main unit (1); a tableware basket (3) which holds objects to be washedw; a washing device which sprays wash solution onto the objects to be washed; an atomizer (4) which atomizes the wash solution; a door (12); a detergent automatic insertion device (15); and a control device (10) which performs at least a pre-washing step, an atomization step, and a washing step. The control device (10), subsequent to the pre-washing step, supplies detergent from the detergent automatic insertion device (15) to the atomizer (4), and controls and executes the atomization step and the washing step. Accordingly, subsequent to execution of the pre-washing step, it is possible to implement the atomization step for a detergent solution. As a result, it is possible to achieve a dishwashing machine which, while suppressing the amount of detergent to use, has high washing performance by way of the atomization step for the detergent solution.

Description

dishwasher

The present invention relates to a dishwasher that houses and cleans objects to be cleaned such as tableware.

Conventionally, as this type of dishwasher, a dishwasher has been proposed in which washing water is sprayed onto the tableware and the like by a washing nozzle (see, for example, Patent Document 1).

Hereinafter, the configuration of the dishwasher described in Patent Document 1 will be described with reference to FIG. FIG. 7 is a longitudinal sectional view of a conventional dishwasher.

As shown in FIG. 7, the conventional dishwasher includes a main body 1, a door 12 that opens and closes the front surface of the main body 1, a washing tub 2 provided in the main body 1, a dish basket 3, an atomizer 4, and a detergent. It consists of an input unit 5 and the like. The door 12 includes an upper door 12 a and a lower door 12 b that are divided into upper and lower portions, and opens and closes the front surface of the main body 1. The tableware basket 3 moves back and forth from the main body 1 through the door 12, and places and accommodates the tableware 7 which is the object to be cleaned. Specifically, the tableware basket 3 is configured to be able to be drawn forward from the main body 1 in a state where the door 12 is opened. The atomizing device 4 atomizes the cleaning water stored at the bottom of the cleaning tank 2. The detergent charging unit 5 is disposed at the upper part of the atomizing device 4 and charges the detergent into the atomizing device 4. At this time, the detergent charging unit 5 is disposed at a position lower than the tableware basket 3 so as not to hinder the movement of the tableware basket 3 when the tableware basket 3 is pulled forward. Furthermore, the tableware basket 3 is provided at a position where it does not overlap with the detergent charging part 5 so as not to prevent the detergent from being charged.

Below, the operation and action of a conventional dishwasher will be described.

First, when using the dishwasher, the user throws in detergent from the detergent throwing unit 5. The introduced detergent is guided from the detergent introduction unit 5 to the atomizing device 4 and accumulated around the atomizing device 4.

Next, when the user starts the operation of the dishwasher, a predetermined amount of tap water is supplied into the washing tub 2 so as to immerse the atomizer 4 as washing water. At this time, the detergent deposited around the atomizing device 4 is dissolved in the supplied washing water to form a detergent solution. The detergent solution is atomized by the atomization device 4 at the start of the atomization step.

Next, after the atomization step, the process proceeds to the washing step to wash the tableware 7 and the like.

Also, in general, when washing objects to be cleaned with a large amount of dirt in a dishwasher not equipped with an atomizing device, it is necessary to add a large amount of detergent. Therefore, in order to reduce the amount of detergent used, a pre-washing step for removing a certain amount of dirt on the object to be cleaned is added before the washing step with the detergent solution.

However, in the configuration of the conventional dishwasher, when the user inputs the detergent into the detergent charging unit 5, the detergent is directly deposited on the atomizing device 4. At this time, when the operation of the dishwasher is started, the detergent is dissolved in the first wash water supplied after the start of the operation to form a detergent solution. For this reason, it is not possible to provide a pre-washing step for washing dishes only with washing water. As a result, there has been a problem that a large amount of detergent is required to clean an object to be cleaned which has a lot of dirt.

JP 2005-224486 A

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a dishwasher having an atomizing device that can execute a pre-washing step as a pre-step of an atomizing step when cleaning an object to be cleaned that has a lot of dirt.

The dishwasher of the present invention includes a main body, a washing tub, a tableware basket that accommodates an object to be cleaned, a cleaning device that sprays cleaning water onto the object to be cleaned, and a bottom of the cleaning tank, and atomizes the cleaning water. An atomizing device, a door that opens and closes the front surface of the main body, an automatic detergent charging device provided inside the door above the atomizing device, and a control device that executes at least the pre-washing step, the atomizing step, and the cleaning step . The control device has a configuration for supplying the detergent from the detergent automatic charging device to the atomizing device after the pre-washing step.

According to this configuration, it is possible to perform the spraying step of the detergent solution by the spraying device after performing the pre-washing step, particularly when cleaning the object to be cleaned that has a lot of dirt. Thereby, the contamination of the object to be cleaned can be removed to some extent before the atomization step and the cleaning step. As a result, it is possible to realize a dishwasher that reduces the amount of detergent used and exhibits high washing performance by the atomization step of the detergent solution.

FIG. 1 is a vertical cross-sectional view of a dishwasher door according to an embodiment of the present invention with the door open. FIG. 2 is a longitudinal sectional view showing a state in which the door of the dishwasher in the embodiment is closed. FIG. 3 is a longitudinal sectional view of the dishwasher door according to another example of the embodiment with a detergent guide path provided in the state where the door is opened. FIG. 4 is a longitudinal sectional view showing a state in which the detergent guide path is provided in the door of the dishwasher in another example of the embodiment and the door is closed. FIG. 5 is a longitudinal sectional view showing a state in which the detergent guide path is provided in the dishwasher of the dishwasher according to still another example of the embodiment and the door is opened. FIG. 6 is a longitudinal sectional view showing a state in which a detergent guide path is provided in the dishwasher of the dishwasher according to still another example of the embodiment and the door is closed. FIG. 7 is a longitudinal sectional view of a conventional dishwasher.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as a prior art example, and description is abbreviate | omitted. Further, the present invention is not limited by this embodiment.

(Embodiment)
Below, the structure of the dishwasher in embodiment of this invention is demonstrated using FIG. 1 and FIG.

FIG. 1 is a longitudinal sectional view showing a state in which the door of the dishwasher in the embodiment of the present invention is opened. FIG. 2 is a longitudinal sectional view showing a state in which the door of the dishwasher in the embodiment is closed.

As shown in FIGS. 1 and 2, the dishwasher according to the present embodiment includes at least a main body 1, a door 12 that opens and closes the front surface of the main body 1, a washing tub 2 provided in the main body 1, and a dish basket 3. And the atomizing device 4, the cleaning device, the control device 10, the automatic detergent charging device 15, and the like.

The door 12 is composed of an upper door 12a and a lower door 12b that are vertically divided on the front side of the main body 1, and opens and closes the front surface of the main body 1. The upper door 12a opens so as to be lifted upward, and the lower door 12b opens so as to fall forward with the lower end as a fulcrum. And the detergent automatic injection | throwing-in apparatus 15 is provided in the inner surface of the lower door 12b.

Also, the cleaning nozzle 6 is rotatably provided at the bottom 2 a inside the cleaning tank 2 and sprays cleaning water onto the tableware 7 stored in the tableware basket 3. At this time, the tableware basket 3 is arrange | positioned above the washing | cleaning nozzle 6, and accommodates the tableware 7 as a to-be-cleaned object. The tableware basket 3 can move back and forth through the opened door 12 and move inside and outside the washing tub 2. Specifically, the tableware 7 can be accommodated by pulling the tableware basket 3 to the upper part of the lower door 12b.

The cleaning device is configured by connecting at least a water storage unit 11, a residue filter 11a, a cleaning nozzle 6, a cleaning pump 9, and the like. The water storage part 11 is arrange | positioned at the bottom part 2a of the washing tank 2, and stores washing water. The residue filter 11 a is disposed so as to cover the upper part of the water storage unit 11 and prevents the residue from flowing into the water storage unit 11. The cleaning pump 9 is connected through a pipe in the middle from the water storage unit 11 to the cleaning nozzle 6, and pumps cleaning water or a detergent solution to the cleaning nozzle 6.

The heater 8 is disposed near the bottom 2a of the cleaning tank 2 and heats the cleaning water, the detergent solution, or the air in the cleaning tank 2.

Further, the atomizing device 4 is arranged on the front side (door 12 side) of the bottom 2a of the cleaning tank 2. And the atomization apparatus 4 melt | dissolves a detergent with a small amount of washing water, produces | generates a highly concentrated detergent solution, atomizes the detergent solution, and spreads it on a to-be-washed object.

Further, the control device 10 is disposed on the lower outside of the front surface of the bottom 2a of the washing tank 2, and controls and executes a series of operations of the dishwasher such as a pre-washing step, an atomizing step, and a washing step.

The dishwasher of this embodiment is configured as described above.

Next, the operation and action of the dishwasher of this embodiment will be described. In addition, the dishwasher of this Embodiment wash | cleans to-be-washed objects, such as the tableware 7, through the prewashing step, the atomization step, the washing | cleaning step, the rinsing step, and the drying step which are controlled by the control apparatus 10. Below, the outline of a prewashing step, an atomization step, and a washing | cleaning step is demonstrated.

First, before starting the operation of the dishwasher, the user pulls the tableware basket 3 out of the washing tub 2 and places the dirty tableware 7 in the tableware basket 3. And when arrangement | positioning is complete | finished, the tableware basket 3 is accommodated in the washing tank 2. FIG.

Next, the user supplies a predetermined amount of detergent to the detergent automatic charging device 15 with a measuring spoon or the like, closes the door 12 and starts operation of the dishwasher.

When the operation of the dishwasher is started, the control device 10 first starts a pre-washing step. When the pre-washing step is started, the control device 10 supplies a predetermined amount of tap water as cleaning water to the water storage section 11 of the cleaning tank 2. The supplied cleaning water is sucked from the water storage unit 11 by the cleaning pump 9 and is pumped to the cleaning nozzle 6. The pumped cleaning water is ejected vigorously from the cleaning nozzle 6. Thereby, the tableware 7 etc. which are arrange | positioned at the tableware basket 3 and accommodated in the washing tank 2 are pre-washed with washing water. At this time, in the pre-washing step, the washing water that has washed the tableware 7 and the like flows again into the water storage unit 11 and is sucked into the washing pump 9 and circulated. Then, the pre-washing step is executed for a predetermined time.

Next, when the pre-washing step for a predetermined time is completed, the control device 10 drains the dirty washing water and shifts to the atomization step for execution.

When the atomization step is started, the control device 10 supplies the detergent from the detergent automatic charging device 15 to the atomization device 4.

Then, the control device 10 supplies a predetermined amount of tap water to the cleaning tank 2 as cleaning water to such an extent that the heater 8 and the atomizing device 4 are immersed. At this time, the detergent supplied to the periphery of the atomizing device 4 is dissolved in a small amount of washing water around the detergent to form a highly concentrated detergent solution.

After that, the control device 10 causes the high-concentration detergent solution to be atomized by the atomizing device 4 and fill the cleaning tank 2.

And leave it for a predetermined time with the atomization and detergent solution adhering to the tableware 7 or the like. Thereafter, the cleaning water containing the detergent (hereinafter referred to as “washing water”) is transferred to the washing step without being drained.

When the cleaning step is started, the control device 10 heats the cleaning water with the heater 8. Simultaneously with the heating, the control device 10 sucks the cleaning water from the water storage unit 11 by the cleaning pump 9 and pumps it to the cleaning nozzle 6. The pumped cleaning water is jetted from the cleaning nozzle 6 onto the tableware 7 and the like. Thereby, the tableware 7 etc. which are arrange | positioned at the tableware basket 3 and accommodated in the washing tank 2 are wash | cleaned with washing water. At this time, in the cleaning step, the cleaning water that has cleaned the tableware 7 and the like flows again into the water storage unit 11 and is sucked into the cleaning pump 9 and circulated. Then, the cleaning step is executed for a predetermined time.

Next, after washing the tableware 7 and the like by the washing step for a predetermined time, the control device 10 drains the dirty washing water and proceeds to the rinsing step and executes it as in the conventional case.

As described above, the operations of the pre-washing step, the atomizing step, and the washing step of the dishwasher according to the present embodiment are executed.

That is, when the dishwasher of this embodiment wash | cleans the tableware 7 with much dirt adhesion with a dishwasher, it implements a pre-washing step first. In the pre-washing step, the pre-washing step may be executed in a state where the detergent is supplied or in a state where the detergent is not supplied. In this case, considering the reduction of the amount of detergent, it is preferable to execute the pre-washing step without supplying the detergent.

After that, the atomizing device 4 carries out an atomizing step of washing water composed of a high-concentration detergent solution. Thus, before the atomization step and the cleaning step, the pre-washing step can remove some contamination of the object to be cleaned. As a result, high cleaning performance can be exhibited by the atomization step of the detergent solution having a high concentration while reducing the amount of detergent used.

Hereinafter, in the dishwasher of the present embodiment, another example configuration for guiding the detergent from the detergent automatic charging device 15 to the atomizing device 4 will be described with reference to FIGS. 3 and 4.

FIG. 3 is a longitudinal sectional view of the dishwasher door in another example of the embodiment with a detergent guide path provided in the open state. FIG. 4 is a longitudinal sectional view showing a state in which the detergent guide path is provided in the door of the dishwasher in another example of the embodiment and the door is closed.

That is, as shown in FIGS. 3 and 4, the detergent introduced from the automatic detergent introduction device 15 is guided to the atomization device 4 through the detergent guide path 13 provided in the lower door 12 b of the door 12. In the point which comprised, it differs from the said embodiment which guides a detergent to the atomization apparatus 4 by dead weight fall.

That is, in the configuration in another example of the present embodiment, the detergent automatic charging device 15 and the detergent guiding path 13 are continuously arranged, for example, inside the lower door 12b constituting the door 12. At this time, it is preferable to provide an opening (not shown) having a shape covering at least the opening of the detergent automatic charging device 15 for discharging the detergent in the upper end portion 13 a of the detergent guiding path 13. Furthermore, the opening part (not shown) of the lower end part 13b of the detergent guidance path | route 13 is a magnitude | size about the upper surface 4a of the atomizer 4, and a shape larger than the opening part of the upper end part 13a is preferable. In addition, the inner peripheral surface of the detergent guide path 13 preferably has a surface configuration in which the detergent is difficult to adhere, or a configuration in which the detergent is prevented from adhering by an adhesion prevention treatment such as a water repellent treatment.

The following is a brief description of the operation and action of the dishwasher configured as described above.

First, as shown in FIG. 4, the operation is started with the door 12 closed, and the same pre-washing step as described above is executed.

Next, after the prewash step is completed, the atomization step is started. At this time, the detergent put in from the detergent automatic feeding device 15 is supplied to the atomizing device 4 through the detergent guiding path 13. Thereby, a predetermined amount of detergent can be supplied to the atomizer 4 more reliably. Therefore, the atomizer 4 can generate a mist of detergent solution having a stable detergent concentration. As a result, a dishwasher that exhibits stable cleaning performance can be realized.

Hereinafter, in the dishwasher of the present embodiment, a configuration of still another example for introducing the detergent from the detergent automatic charging device 15 to the atomizing device 4 will be described with reference to FIGS. 5 and 6.

FIG. 5 is a longitudinal sectional view showing a state in which the detergent guide path is provided in the dishwasher of the dishwasher in another example of the embodiment and the door is opened. FIG. 6 is a longitudinal sectional view showing a state in which a detergent guide path is provided in the dishwasher of the dishwasher according to still another example of the embodiment and the door is closed.

That is, as shown in FIG. 5 and FIG. 6, the detergent introduced from the detergent automatic feeding device 15 is configured to be guided to the atomizing device 4 through the detergent guiding path 23 provided in the tableware basket 3. Thus, the configuration is different from that of each of the above embodiments.

That is, in the configuration of still another example of the present embodiment, in a state where the door 12 is closed, the opening is opposed to the opening below the opening for discharging the detergent of the automatic detergent charging device 15 provided inside the lower door 12b. The detergent guide path 23 is disposed outside the front surface of the tableware basket 3 at the position where the table is to be moved.

First, as shown in FIG. 6, the operation is started with the door 12 closed, and the same pre-washing step as described above is executed.

Next, after the prewash step is completed, the atomization step is started. At this time, the detergent put in from the detergent automatic feeding device 15 is supplied to the atomizing device 4 through the detergent guiding path 23 arranged in the tableware basket 3. Thereby, a predetermined amount of detergent can be supplied to the atomizer 4 more reliably. Therefore, the atomizer 4 can generate a mist of detergent solution having a stable detergent concentration. As a result, a dishwasher that exhibits stable cleaning performance can be realized.

In the configuration of still another example of the present embodiment, the detergent guide path 23 can be taken out of the machine together with the tableware basket 3. Therefore, cleaning of the detergent guide path 23 that tends to be contaminated with detergent or residue becomes easy. Thereby, the detergent supply to the atomization apparatus 4 from the detergent automatic injection | throwing-in apparatus 15 can be maintained reliably.

In addition, you may comprise the detergent guidance path | route 23 so that attachment or detachment with respect to the tableware basket 3 is possible. Thereby, cleaning of the detergent guidance path | route 23 is made still easier, and the detergent supply to the atomization apparatus 4 can be maintained more reliably.

Further, it is preferable that the opening on the upper end portion 23a side of the detergent guide path 23 is made larger than the opening on the lower end portion 23b side. At this time, it is preferable that the opening on the lower end 23b side is approximately the same as or smaller than the area of the upper surface 4a of the atomizing device 4. Thereby, the detergent falling from the detergent automatic charging device 15 can be reliably guided to the detergent guiding path 23 and can be reliably supplied onto the atomizing device 4. Further, in the rinsing step or the like, the detergent remaining on the inner surface of the detergent guiding path 23 can be more reliably and effectively removed with the washing water flowing from the opening on the upper end portion 23a side. As a result, the detergent guide path 23 can be maintained in a hygienic and easy-to-guide detergent state at all times in a single washing operation.

As explained above, the main body, the washing tub, the tableware that contains the object to be cleaned, the cleaning device for injecting the cleaning water onto the object to be cleaned, and the bottom of the cleaning tank are provided to atomize the cleaning water. An atomizing device, a door that opens and closes the front surface of the main body, an automatic detergent charging device provided inside the door above the atomizing device, and a control device that executes at least the pre-washing step, the atomizing step, and the cleaning step . The control device may have a configuration in which the detergent is supplied from the detergent automatic charging device to the atomizing device after the pre-washing step.

According to this configuration, it is possible to perform the spraying step of the detergent solution by the spraying device after performing the pre-washing step, particularly when cleaning the object to be cleaned that has a lot of dirt. Thereby, the contamination of the object to be cleaned can be removed to some extent before the atomization step and the cleaning step. As a result, it is possible to realize a dishwasher that reduces the amount of detergent to be used and exhibits high washing performance by the atomization step of the detergent solution with a high concentration.

In addition, the dishwasher of the present invention may further include a detergent guiding path in the door for guiding the detergent introduced from the detergent automatic feeding device to the atomizing device. Thereby, a detergent can be guide | induced to an atomizer more reliably.

Further, the dishwasher of the present invention may further include a detergent guiding path for guiding the detergent introduced from the detergent automatic charging device to the atomizing device in the dish basket. Thereby, a detergent can be more reliably guided to an atomizer.

Also, in the dishwasher of the present invention, the door may be composed of an upper door that opens upward and a lower door that opens downward, and an automatic detergent loading device may be provided on the lower door. This facilitates the supply of the detergent to the detergent automatic input device. Furthermore, the detergent can be reliably supplied onto the atomizer by shortening the distance to the atomizer.

In the dishwasher of the present invention, the detergent guide path may be provided so as to be removable. Thereby, the detergent guide path can be easily cleaned. As a result, it is hygienic and can prevent clogging of detergents.

Further, the dishwasher of the present invention may be configured such that the detergent guide path can be washed in the rinsing step. Thereby, it is possible to reliably prevent the detergent from remaining in the detergent guide path in one washing operation.

The present invention makes it possible to perform an atomizing step of a detergent solution by an atomizing device after performing a pre-washing step when cleaning an object to be cleaned that has a lot of dirt. Accordingly, the present invention is useful in a technical field such as a dishwasher that requires high washing performance while suppressing the amount of detergent used.

DESCRIPTION OF SYMBOLS 1 Main body 2 Washing tank 2a Bottom part 3 Tableware basket 4 Atomization apparatus 4a Upper surface 5 Detergent input part 6 Cleaning nozzle (cleaning apparatus)
7 Tableware (objects to be cleaned)
8 Heater 9 Cleaning pump (cleaning device)
DESCRIPTION OF SYMBOLS 10 Control apparatus 11 Water storage part 11a Residual filter 12 Door

12a Upper door

12b Lower door

13,23

Detergent guide path

13a, 23a

Upper end part

13b, 23b Lower end part 15 Detergent automatic injection | throwing-in apparatus

Claims

A main body, a washing tank, a tableware for storing the object to be cleaned, a cleaning device for injecting cleaning water onto the object to be cleaned, and an atomizing device provided at the bottom of the cleaning tank for atomizing the cleaning water; A door that opens and closes the front surface of the main body, an automatic detergent charging device provided inside the door above the atomizing device, and a control device that executes at least a prewashing step, an atomizing step, and a cleaning step. Prepared,
The said control apparatus is a dishwasher which supplies a detergent from the said detergent automatic injection | throwing-in apparatus to the said atomization apparatus after a prewash step.
The dishwasher according to claim 1, further comprising a detergent guide path that guides the detergent supplied from the detergent automatic charging device to the atomizing device in the door.
The dishwasher according to claim 1, further comprising a detergent guide path that guides the detergent supplied from the detergent automatic charging device to the atomizing device.
The door is composed of an upper door that opens upward and a lower door that opens downward,
The dishwasher of Claim 1 which provides the said detergent automatic injection | throwing-in apparatus in the said lower door.
The dishwasher according to any one of claims 2 and 3, wherein the detergent guide path is detachably provided.
The dishwasher according to claim 3, wherein the detergent guide path is configured to be washable in the rinsing step.