JP3823701B2 - dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for washing tableware installed only in a specific area of a dishwasher.
[0002]
[Prior art]
Conventionally, what is found in Japanese Patent Laid-Open No. 7-75617 is described in detail as follows.
In a dishwasher equipped with upper and lower two-stage baskets, as shown in FIG. 7, an opening / closing valve (solenoid) for closing the water channel is provided in the water conduit connecting the washing pump and the upper nozzle. When only one basket is used, the on-off valve can be closed to shut off the water supply to the upper nozzle.
Thereby, when a user wants to wash | clean only the tableware accommodated in one basket, it can wash | clean effectively.
[0003]
[Problems to be solved by the invention]
However, in the case of the above dishwasher, since an on-off valve such as a solenoid valve is required, there is a drawback that the overall cost is increased and the overall size is increased, and in the area where water supply is shut off, the washing water from the nozzle is completely absent. Therefore, the inner wall and the basket are dirty.
The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to effectively clean dishes stored in a specific basket without adding parts that increase the cost and size of a solenoid valve or the like. It is another object of the present invention to provide a dishwasher that prevents contamination of areas other than the area to be used.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a cleaning tank having a first cleaning area and a second cleaning area for storing an object to be cleaned, and each of the first cleaning area and the second cleaning area. A water supply means for supplying cleaning water and rinsing water used for cleaning and rinsing into the cleaning tank, and discharging the cleaning water and rinsing water from the cleaning tank. Discharging means, first and second nozzles for spraying cleaning water / rinsing water onto the objects to be cleaned in the first cleaning area and the second cleaning area, and the cleaning water / rinsing water to the first and second nozzles Compared to the first conduit by connecting the pump to be supplied, the first conduit that communicates the pump and the first nozzle, and the pump and the second nozzle, and narrowing the flow path of the pipe itself. A second water conduit configured to cause pressure loss; Comprising a pump output control means for controlling the output of the amplifier, the. The operation mode of the pump output control means includes a standard water discharge mode for increasing the output of the pump and a limited water discharge mode for decreasing the output of the pump. In the standard water discharge mode, Regardless of the pressure loss, the objects to be cleaned in the first cleaning area and the second cleaning area can be cleaned by the water discharged from the first and second nozzles. In the limited water discharge mode, the pressure loss in the second water conduit Accordingly, while the water discharge from the second nozzle so that it can not obtain an effective cleaning power for the object to be cleaned is Ru is configured to take place, the water discharge from the first nozzle, the article to be cleaned in the first cleaning area Is configured to be washable.
[0005]
In Claim 2, the 1st washing | cleaning area is arrange | positioned at the lower part of the said washing tank, the 2nd washing | cleaning area is arrange | positioned at the upper part, and the water discharged from a 2nd nozzle is to be cleaned of the 1st washing area at the time of the said limited water discharge mode. to strike the object, the second water channel by squeezing the flow channel of the pipe itself, water pressure than the first water conduit is configured to Ru is lost.
[0006]
According to a third aspect of the present invention, in the limited water discharge mode, the second nozzle is disposed below the second car so that water discharged from the second nozzle hits the second car.
[0007]
According to a fourth aspect of the present invention, the course for exclusive use of the limited water discharge mode is provided, and when the course is selected, a process of continuous washing and rinsing by the limited water discharge mode operation determined in advance is executed.
[0008]
In Claim 5, while configuring so that a plurality of cleaning courses can be selected, the plurality of cleaning courses can be selected in the limited water discharge mode, and the objects to be cleaned in the first cleaning area can be selected in the plurality of cleaning courses. Only cleaning and rinsing steps can be performed.
[0009]
In Claim 6, in the said limited water discharge mode, washing | cleaning time is made longer than the said standard water discharge mode.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
In the first embodiment, as shown in FIG. 1, in a dishwasher having two or more washing areas, a structure in which pressure loss means is provided in the middle of a water conduit that is led to some nozzles as shown in FIG. Take. If the pump is controlled to a predetermined output by this pressure loss means, cleaning water and rinsing water are jetted only in a part of the area. Further, in the second embodiment, as shown in FIG. 4, the tableware washing area has a structure having two or more steps in the vertical direction. In this case, a part of the portion that is led to the upper area of the water channel is a pressure loss means, and the presence of the position head causes the washing water to be jetted only in the lower area when the pump is lowered to a predetermined output. Become so.
[0014]
【Example】
The first embodiment will be described below with reference to FIGS.
In FIG. 1, 1 represents a dishwasher main body. In a general dishwasher, by first opening the opening / closing means 13 such as an electromagnetic valve, water is supplied or hot water is supplied from 14, and a constant amount of water is stagnated in the stagnant part 3. After that, the circulation pump 4 sucks the water or hot water stagnated in the water stagnation part 3 and injects it from the washing nozzle 10 through the water conduit 5. The water / hot water that has been stagnant is sprayed over the tableware stored in the tableware basket 7 and then is again stagnated in the water reservoir 3. At this time, if a dishwasher detergent is placed in the washing tank in advance, the water or hot water remaining in the circulation of the pump becomes washing water, and the dishes can be washed. After this washing water circulation operation, i.e., the tableware washing operation, is performed with constant control, the washing water in the stagnant portion is drained through the drainage path 11 by the drainage means 12. Next, water or hot water is supplied from 14 by the opening operation of the opening / closing means 13 again, and the operation of circulating the water / hot water stagnated in the stagnation part with a circulation pump is performed, and after a predetermined time operation according to the control, the water is drained again. . The tableware can be rinsed by repeating this operation a predetermined number of times.
That is, in the dishwasher, the dishes can be washed up by the circulation operation of a predetermined amount of washing water and the subsequent rinsing operation with a predetermined amount of water and hot water.
[0015]
Here, in the first embodiment of the present invention, a mode for controlling the pump output to be small is prepared for control. Moreover, as shown in FIG. 2, the pressure loss means 9 is provided in the predetermined water conduit which goes to a nozzle among the water conduits 5 which connect the exit of a circulation pump and the nozzle 10. In this mode, if the circulation pump is moved to perform washing / rinsing operation, the spray from the washing nozzle 10a in the specific area hits the tableware, but the water discharged from the washing nozzle 10b in the other areas is so small that it does not reach the tableware. Does not contribute.
[0016]
When the number of dishes to be washed at a time is small, in the case of this embodiment, the dishes are stored only in the right basket 7a. Then, when the washing / rinsing operation is performed in a mode in which the output of the pump prepared for control is controlled to be small, as shown in FIG. 3, the jet from the washing nozzle reaches the tableware 6a stored on the right side to wash the tableware. However, the amount of water discharged from the nozzle 10b is small on the left side, and even if tableware is stored, it cannot be washed and rinsed.
[0017]
Next, a second embodiment will be described with reference to FIGS.
In this example, the control and the like are all the same as in the first embodiment except that the area for storing tableware is divided up and down. When the number of dishes to be washed at a time is small, in the case of this embodiment, the dishes are stored only in the lower basket. Then, when the cleaning / rinsing operation is performed in a mode in which the output of the pump prepared for control is controlled to be small, as shown in FIG. 6, it is arranged to wash the tableware stored in the upper area in the normal output state of the pump. The water discharged from the washing nozzle cannot be sprayed onto the tableware stored in the upper area, and as a result, only the tableware stored in the lower area is washed.
The water discharged from the washing nozzle arranged to wash the tableware stored in the upper area cannot wash the tableware stored in the upper area. Since it will be sprayed, it can contribute to the washing | cleaning of the tableware stored in the lower area result.
[0018]
Although two embodiments have been described above, there are the following effects in addition to the above description. First, when the pump output is controlled to a small value, if the water is discharged from nozzles located outside the specific area and hits the tableware basket or the washing tank, it is stored in the specific area when cleaning in the specific area. It is possible to prevent the dirt on the tableware from adhering to places other than the washing area.
Also, as shown in FIGS. 8 and 9, if a dedicated control course for reducing the output of the pump is provided, the user can handle it as one of the course selections when there are few dishes.
When cleaning only the tableware stored in a specific area by reducing the output of this pump, since the momentum of injection from the nozzle is smaller compared to the normal output state, normal output to obtain sufficient cleaning power It is necessary to use a control sequence different from the time (such as taking a longer set time for each process), and the cleaning of only the lower basket has a corresponding content.
In addition, if a control course that reduces the output of this pump is prepared with a separate switch so that it can be used in conjunction with other cleaning courses, the course can be adjusted according to the degree of contamination of the dishes even when there are few dishes. You can choose.
[0019]
Also, as shown in FIGS. 10 and 11, by providing a switch that reduces the pump output and cleans only the dishes stored in the specific area as an option separately from the cleaning course during normal output, only in the specific area. Even when washing the stored dishes, you can select the course according to your preference for the degree of dirt and finish of the dishes. Of course, when the table is washed in a specific area by pressing the option switch, the control sequence (setting time for each process, etc.) can be changed from normal operation to the same course (for example, taking longer). It is possible to optimize the washing of dishes.
As a means for controlling the output of the circulation pump to be small, there are means for simply reducing the input to the pump, ON / OFF control of the pump, or control for changing the input to the pump during operation. is there.
[0020]
【The invention's effect】
The present invention exhibits the following effects by the above configuration. According to the first aspect of the present invention, it is possible to inject cleaning water effective for cleaning only to a specific area by only controlling to reduce the output of the pump without providing a water conduit blocking device. Since the pump output is small, the cleaning and rinsing operation can be performed without mixing air into the pump even if the amount of cleaning water and rinsing water stagnant in the cleaning tank is reduced compared to the normal cleaning and rinsing operation at the pump output. be able to. Therefore, the amount of detergent for water bills, electricity bills, gas bills, and dishwashers can be reduced. In addition, when the pump output is reduced, the nozzle that has an effective injection force for washing dishes is only in a specific area, so there is no injection into the area where dishes are not stored, and the energy for operating the pump. Can be reduced.
[0022]
According to the second aspect , at the time of cleaning the specific area, it is possible to make up for a decrease in the injection force to the tableware due to a decrease in the pump output by an injection force from another nozzle. In addition, it is possible to obtain a dishwasher that can store dishes in multiple stages in the vertical direction and can wash only the dishes stored in the lower area when the pump output is reduced.
[0023]
According to the third aspect of the present invention, it is possible to obtain a dishwasher that prevents a basket in an area other than the washing area to be used from becoming dirty.
[0025]
According to the fourth aspect of the present invention, it is possible to obtain a dishwasher in which dishes stored in a specific area are efficiently washed or a rinse course is provided as a dedicated course.
[0026]
According to the fifth aspect , the tableware stored in the specific area can be efficiently cleaned, or the rinse course can be used as a separate switch in combination with any cleaning course prepared in advance.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first embodiment of a dishwasher according to the present invention.
FIG. 2 is a diagram showing details of a first embodiment water conduit.
FIG. 3 is a diagram showing a state where the pump output is reduced in the first embodiment.
FIG. 4 is a cross-sectional view showing a second embodiment of the dishwasher of the present invention.
FIG. 5 is a diagram showing details of a water conduit of a second embodiment.
FIG. 6 is a diagram showing a state where the pump output is reduced in the second embodiment.
FIG. 7 is a cross-sectional view showing the internal structure of a conventional dishwasher.
FIG. 8 is a flowchart of an operation program in which a cleaning course for a specific area is provided as a dedicated course.
9 is a configuration diagram of a selection function unit according to the embodiment of FIG.
FIG. 10 is a flowchart of an operation program that is provided with a cleaning course in a specific area as another switch and is executed in combination with another cleaning course.
11 is a configuration diagram of a selection function unit according to the embodiment of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dishwasher main body 2 Washing tank 3 Water stagnation part 4 Circulation pump 5 Water conduit 6 Tableware 7 Tableware basket 9 Pressure loss means 10 Washing nozzle 11 Drainage path 12 Drainage means 13 Water supply / hot water on / off valve 14 Water supply / hot water supply path

Claims (6)

A cleaning tank having a first cleaning area and a second cleaning area for storing an object to be cleaned;
Each of the first and second baskets provided independently in each of the first cleaning area and the second cleaning area,
Water supply means for supplying cleaning water / rinsing water used for cleaning / rinsing in the cleaning tank;
Discharging means for discharging cleaning water / rinsing water from the cleaning tank;
First and second nozzles for spraying cleaning water and rinsing water onto objects to be cleaned in the first cleaning area and the second cleaning area;
A pump for supplying wash water and rinse water to the first and second nozzles;
A first water conduit communicating the pump and the first nozzle;
A second water conduit configured to cause the pressure to be lost as compared to the first water conduit by communicating the pump and the second nozzle and narrowing the flow path of the pipe itself;
Pump output control means for controlling the output of the pump,
The operation mode of the pump output control means includes a standard water discharge mode for increasing the output of the pump and a limited water discharge mode for decreasing the output of the pump.
In the standard water discharge mode, the objects to be cleaned in the first cleaning area and the second cleaning area can be cleaned by water discharged from the first and second nozzles regardless of the pressure loss in the second water conduit.
In the limited water discharge mode, water discharge is performed such that effective cleaning power for the object to be cleaned in the second area cannot be obtained from the second nozzle due to pressure loss in the second water conduit. The dishwasher is characterized in that the water discharge is configured to be able to clean the object to be cleaned in the first cleaning area. A first cleaning area is disposed at the bottom of the cleaning tank, and a second cleaning area is disposed at the top,
In the limited water discharge mode, the second water conduit is narrower than the first water conduit so that the water discharged from the second nozzle hits the object to be cleaned in the first cleaning area. dishwasher according to claim 1, wherein the water pressure is configured to Ru is lost.   The dishwasher according to claim 2, wherein the second nozzle is disposed under the second car so that water discharged from the second nozzle hits the second car in the limited water discharge mode.   2. The dishwasher according to claim 1, further comprising a limited water discharge mode-dedicated course, wherein, when the course is selected, a continuous washing and rinsing process is performed by the predetermined limited water discharge mode operation.   A plurality of cleaning courses can be selected, the plurality of cleaning courses can be selected in the limited water discharge mode, and only the objects to be cleaned in the first cleaning area can be cleaned and rinsed in the plurality of cleaning courses. 2. The dishwasher according to claim 1, wherein the process is executable.   The dishwasher according to claim 1, wherein the limited water discharge mode has a longer washing time than the standard water discharge mode.

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