JP2001104234A - Tableware washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tableware washer/dryer capable of reducing energy consumption with an improved washing capability by controlling the quantity of water supply and the power of jet water at multiple levels. SOLUTION: This tableware washer has a washing tub 31, a washing water supply means 32, a water level sensor means 33, a washing means for pressurizing and jetting washing water, a washing water heating means 35, a temperature detecting means 36 and a control device 1 for controlling the washing means 3 or the water supply means 32, etc. In the main washing process, washing is started with a small quantity of washing water at a first water supply level and with the lower output of the power of jetting water of the washing means 3, and after the washing water is heated to a first washing temperature by the heating means 35, washing water is added up to a second water supply level and the power of jet water of the washing means 3 is increased to wash the tableware.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing and drying tableware, and more particularly to a structure for improving washing power and reducing power consumption.

[0002]

2. Description of the Related Art A conventional dishwasher will be described with reference to FIGS.

[0003] As a configuration for washing and drying dishes, a dish basket 30 for accommodating dishes to be washed, a washing tank 31, and a water supply valve for supplying washing water are provided by a water supply means 3.
It has as 2. The water supply means 32 has a water amount detection means 33 for detecting the amount of cleaning water supplied to the cleaning tank 31, and the water amount detection means 33 has a pressure method (commonly referred to as a pressure method) for detecting a water pressure according to the depth of the cleaning water. PS method).
Of course, a float system that detects the water level by floating the float or a flow measurement system that directly measures the amount of water supplied from the water supply unit 32 may be used.

The cleaning means 34 for injecting cleaning water into the object to be cleaned for cleaning includes a cleaning nozzle 34a for injecting pressurized cleaning water, and a cleaning pump 34 for injecting cleaning water.
b. Also, a heating means 3 for heating the washing water
5. A temperature detecting means 36 for washing water is provided.

[0005] The water supply means 32, the cleaning pump 34a,
The operation is controlled by a control device 37 that controls the heating means 35 and the like. Further, an operation panel 37 for a user to operate the control device 37 is provided. Then, the operation panel 37
The controller 37 executes several operation methods in which the washing time and the washing or rinsing temperature are changed according to the input from. Each of the above components is housed in the housing 39.

Although not shown in the drawings, a drain pump for discharging washing water out of the washing machine, a blower for sending outside air into the washing tank 31, a lid for opening and closing the opening of the washing tank 31, and the like. , The stored object to be washed can be fully automatically washed and dried.

[0007] In such a dishwasher / dryer, with the lid open, the tableware basket 30 is pulled out to store the tableware to be washed. Next, the tableware basket 30 is placed in the washing tank 31.
And put detergent. The user closes the lid, selects a driving course on the operation panel 38, and starts driving. Here, it is assumed that a standard operation course having a cleaning step and a drying step is selected. Hereinafter, such driving is also referred to as a standard course.

First, a predetermined amount of washing water for stabilizing the operation of the washing pump 34b for pressurizing the washing water is supplied to the water supply means 32.
And a water supply step of supplying water to the cleaning tank 31 by the water amount detecting means 33. Subsequent to this water supply step, a main washing step of jetting the washing water together with the detergent from the ejection port of the washing nozzle 34a while pressurizing by the washing pump 34b and heating to the first first washing temperature by the heating means 35 is performed. Will be

The heating means 35 is generally about 1000 watts.
Since the heating element is operated simultaneously with the cleaning means 34, the power consumption of the entire apparatus is large. Therefore, the dishwasher is usually connected to a dedicated power outlet and cannot be operated simultaneously with other devices with large power consumption.

In the main washing step, the washing water is ejected vertically or obliquely upward from the ejection port of the washing nozzle 34a. In addition, the cleaning nozzle 34a rotates substantially horizontally in one direction at a substantially constant rotational angular velocity due to the jet reaction force of the cleaning water. The dishes are washed by the action of the collision force (also called mechanical force), detergent, heat, etc. of the washing water injected from the rotating washing nozzle 34a. The energy of the injected cleaning water is proportional to the pressure and flow rate,
This is hereinafter also referred to as injection water power.

After the washing water rises to the first first washing temperature and passes through a main washing step for a predetermined time, washing water containing dirt washed off from tableware or the like is then discharged out of the machine by a drain pump. Enter the drainage process. Subsequently, a water supply step of newly supplying washing water, a rinsing step of jetting washing water from the washing nozzle 34a to rinse dishes washed with detergent or garnish (the stains attached to the dish are also called garbage), The draining step is repeated four times consecutively, and the cleaning step is completed. That is, the cleaning step includes such a main cleaning step and a rinsing step.

In order to perform the subsequent drying step in a short time, the final rinsing step is a heating rinsing step in which the cleaning water is heated by the heating means 35 to the second cleaning temperature. Here, generally, the first cleaning temperature is equal to the second cleaning temperature.
Often below the washing temperature.

The above-mentioned first cleaning temperature is about 55 ° C.
It is often set to 60 ° C., but from the viewpoint of the type and amount of fats and oils actually attached to the object to be cleaned, it is about 40 to 55 ° C.
May be set. Also, the second cleaning temperature is
Some are set at about 75 ° C. or higher in order to finish the article to be cleaned more hygienically, but even at about 50 to 65 ° C.,
The operation time of the drying step may be made slightly longer.

Subsequent to the above-mentioned washing step, a drying step of operating the blower and the heating means 35 to discharge moisture in the washing tank 31 and heating and evaporating the water droplets of the washing water attached to the dishes is performed. We finish driving.

[0015]

In the above-described conventional dishwasher, in the main washing process, only a necessary amount of washing water is supplied to stabilize the operation of the washing pump 34b for pressurizing the washing water. And wash it while heating. On the other hand, various contaminants such as starch, proteins, oils and fats adhere to the object to be cleaned, and there is an appropriate cleaning method according to the type of the contaminants and the state of adhesion. Therefore, the control device 37 realizes this. Drive as follows.

First, with respect to fats and oils, it is necessary to heat the washing water to be sprayed to the first washing temperature in order to dissolve by heat. However, the amount of washing water in the main washing step is usually about 3 to 4 L in a general household dishwasher, and in order to heat the washing water to the first washing temperature,
The power consumption of the heating means 35 is large. That is, energy saving in the main washing process is difficult.

For example, even if only 3 L of washing water is heated to 40 degrees, the heating efficiency is set to 60% and about 0.2 kW.
h of power is required. Of course, the same applies to the case where the cleaning water is heated by heating and rinsing.

Therefore, in the above-described conventional dishwasher, the heating means 35 is 1000 W and the washing means 34 is 100 W, and the heating means 35 occupies most of the energy consumed in one operation. Is obvious.

Next, starch, especially rice grains,
With respect to the adhesion of residual vegetables and the like, the pressurizing ability of the cleaning pump 34b is increased to increase the power of the jetting water of the cleaning nozzle 34a, so that the cleaning effect due to the collision of the cleaning water with the object to be cleaned and dirt is increased, and Time can be reduced.

Regarding this point, several cleaning methods have been conventionally proposed in which the pressurizing ability of the cleaning pump 34a is changed in the main cleaning step. For example, Japanese Unexamined Patent Publication No.
No. 55230 shows a cleaning method in which the main cleaning step is started with a weak jet and ended with a strong jet. Further, Japanese Patent Application Laid-Open No.
In 46391, the cleaning step is started with low power, and after a predetermined temperature is reached, cleaning is performed with high power.

In any case, however, increasing the pressurizing capacity of the cleaning pump 34b requires increasing the flow rate of the cleaning water in the cleaning means 34.
At this time, in order to obtain stable injection water power, it is necessary to supply more washing water than when operating with weak injection or low power. For this reason, in order to raise the washing water to the first washing temperature in the main washing step, the power consumption of the heating means 35 is increased. Of course, heating means 3
Since the power consumption of No. 5 is limited by the capacity of the power outlet, it takes time to heat.

Therefore, the above-described conventional dishwasher has a problem that, in order to increase the washing power, the power consumption increases and the operation time increases.

The present invention solves the problems of the conventional dishwasher as described above. In particular, it is desirable to provide a dishwasher capable of controlling the water supply amount and the injection water power of the washing means to a multi-level in the main washing process to increase the washing power and at the same time reduce the power consumption of the heating means. That is the purpose.

[0024]

DISCLOSURE OF THE INVENTION The dishwasher of the present invention comprises:
Tableware for storing objects to be washed, washing tank, washing water supply means, washing water amount detecting means, washing means for pressurizing and jetting the washing water, washing water heating means, washing water Temperature control means, and a control device for controlling the cleaning means and the water supply means and performing a main washing step and a rinsing step. In the main cleaning step, the control means controls the cleaning means at the first water supply amount. The washing water is washed while heating the washing water with a low output of the jet water power. After the washing water reaches the first washing temperature by the heating means in the same step, the washing water is added up to the second water supply amount, In addition, cleaning is performed by increasing the jet water power of the cleaning means to a high output.

According to the present invention, in the main washing step, the washing is performed by heating to the first washing temperature with the first amount of washing water having a small amount of washing water, so that the power consumption for the heating means to heat the washing water is reduced. You. Further, the heating of the cleaning water is performed in a short time. When the temperature reaches the first cleaning temperature, the fats and oils are dissolved and washed. Subsequently, washing water is added up to the second water supply amount, which has a large washing water amount, and the washing is performed with high-output injection water power. Therefore, starch and other attached dirt are washed by the collision force of the injected washing water. As a result, a predetermined detergency is obtained in a short time thereafter. Therefore, it is possible to provide a dishwasher that consumes less power per operation and saves energy.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is characterized in that a tableware for storing an object to be washed, a washing tank, a means for supplying washing water, a means for detecting the amount of washing water, and a method for pressurizing the washing water. A cleaning device for spraying, a heating device for the cleaning water, a temperature detection device for the cleaning water, a control device for controlling the cleaning device and the water supply device and performing a main cleaning process and a rinsing process, and In the main washing step, the jet water power of the washing means is reduced to a low output at the first water supply amount, and the washing water is washed while being heated. In the same step, the washing water reaches the first washing temperature by the heating means. After that, the washing water is added up to the second water supply amount, and the injection water power of the washing means is set to a high output, so that the dishwasher is washed without heating the washing water.

According to the present invention, in the main washing step, the washing is performed by heating to the first washing temperature with the first amount of washing water having a small amount of washing water, so that the power consumption of the heating means is reduced. In addition, heating is performed in a short time. At this stage, the fats and oils are washed. Subsequently, the washing water is added up to the second water supply amount where the washing water amount is large, and the washing water is washed by the high-powered jet water power, so that starch and other attached dirt are more strongly sprayed with the collision force of the washing water. , A predetermined cleaning power is obtained in a short time. At this time, since the operation is performed without heating the cleaning water, the power consumption in the main cleaning step can be reduced as compared with the conventional one.

According to a second aspect of the present invention, there is provided a washing machine for storing an object to be washed, a washing tank, a washing water supply means, a washing water amount detecting means, and a washing means for pressurizing and jetting the washing water. And a control unit for controlling the washing unit, the water supply unit, and the like to execute a main washing step and a rinsing step, and the control unit includes a main washing unit. In the step, when the temperature of the washing water is equal to or higher than the first washing temperature, the injection water power of the washing means is set to a low output at the first water supply amount, and washing is performed without heating the washing water. After the lapse of time, the washing water is added up to the second water supply amount, and the power of the jetting water of the washing means is set to a high output to make the dishwasher wash.

According to the present invention, if the washing water is equal to or higher than the first washing temperature in the main washing step, the operation of the heating means is stopped,
The power consumption is reduced, and energy can be saved.
Since the heating means operates mainly in the heating and rinsing step and with the second water supply amount, the heating means may have a small heating capacity, so that the power consumption of the whole apparatus can be reduced, and the other power supply can be connected to other apparatuses at a general household power outlet. Simultaneous operation is also possible.

The cleaning power is such that in the main cleaning step, the first water supply amount with a small amount of cleaning water is used, the power of the injection water of the cleaning means is low, and the high-temperature cleaning water is used to decompose oils and fats for cleaning. Subsequently, washing water is added up to the second water supply amount, which has a large amount of washing water, and is washed by high-output injection water power.
In addition, a predetermined cleaning power is obtained in a short time by cleaning the other attached dirt by the collision power of the cleaning water that is more strongly sprayed.

The third aspect of the present invention is the first or second aspect.
In the invention, the control device may be a dishwasher in which the heating means is stopped in the main washing step in which the jet water power is set to a high output, and washing is performed for a predetermined second washing time.

According to the present invention, the cleaning power is obtained by performing the cleaning for a predetermined second cleaning time with the high-power injection water power, and at the same time the cleaning water is operated without heating the cleaning water during the second cleaning time. The power consumption in the washing step can be further reduced.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the control device is provided with a dish amount detecting means for detecting an amount of the object to be washed. This is a dishwasher that increases and decreases the first water supply amount and the second water supply amount in the main washing step in conjunction with the detection signal.

According to the present invention, the tableware amount detecting means for detecting the amount of the object to be washed detects the amount of the tableware stored in the tableware basket from a change in the weight thereof, and when a large amount of the object to be washed is stored. , The first water supply amount and the second water supply amount are increased. By increasing the amount of washing water, the output of the jet water power can be increased, and a predetermined washing power can be obtained regardless of the storage amount of the object to be washed. Further, in particular, by increasing the second water supply amount in the main washing step, it is possible to perform an energy saving operation in which the washing power is increased and the power consumption is not increased.

According to a fifth aspect of the present invention, in the first aspect of the present invention, there is provided a dirt amount detecting means for detecting a dirt amount of the object to be cleaned, and the control device detects the dirt amount. This is a dishwasher that increases and decreases the first water supply amount and the second water supply amount in the main washing step in conjunction with the signal.

According to the present invention, the dirt amount detecting means for detecting the dirt amount of the object to be cleaned detects the dirt amount of the tableware stored in the tableware basket from the change in the turbidity of the washing water, and detects a large amount of dirt. When there is dirt, the first water supply amount and the second water supply amount are increased. By increasing the amount of the washing water, the output of the jet water power can be increased, and a predetermined washing power can be obtained regardless of the amount of dirt on the object to be washed.

In particular, by increasing the second water supply amount in the main washing step, it is possible to perform the energy-saving operation without increasing the power consumption by increasing the washing power.

According to a sixth aspect of the present invention, in the first aspect of the present invention, an operation panel for designating an amount of an object to be cleaned or an amount of dirt is provided. Of the main washing process based on the
This is a dishwasher for increasing and decreasing the water supply amount and the second water supply amount.

According to the present invention, the first water supply amount and the second water supply amount are increased in accordance with the storage amount of the cleaning object and the amount of dirt by designating the amount of the cleaning object or the amount of dirt on the operation panel. Let it. Increasing the amount of cleaning water increases the output of the motive power of the injection water, and obtains a predetermined cleaning power regardless of the amount of dirt on the object to be cleaned.

In particular, it is possible to easily obtain a predetermined washing power without providing a dish amount detecting means and a stain amount detecting means, and to increase the second water supply amount in the main washing step by increasing the washing power.
In addition, it is possible to perform energy saving operation without increasing power consumption.

According to a seventh aspect of the present invention, in accordance with the first aspect of the present invention, an operation panel for selecting a degree of sticking of dirt is provided, and the control device operates based on a command from the operation panel. And a dishwasher for increasing or decreasing the washing time with the first water supply amount or the washing time with the second water supply amount in the main washing step.

According to the present invention, the degree of sticking of the dirt on the object to be cleaned is specified on the operation panel, and the cleaning time at the first water supply amount or the cleaning time at the second water supply amount is determined according to the state of the contamination. To extend. Extending the cleaning time increases the cleaning power by spraying the cleaning water, so that a predetermined cleaning power is obtained irrespective of the contamination state of the object to be cleaned.

In particular, extending the washing time with the first water supply amount in the main washing step enhances the washing power due to the swelling effect on the rice grains among the sticky stains, and the jet water power has a low output. , Low noise. In addition, increasing the second water supply amount in the main washing step can increase the cleaning power due to the collision of the rice grains with the jetting among the sticky dirt, and perform the energy saving operation without increasing the power consumption.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the control device estimates the amount of dirt based on a command from the operation panel and increases or decreases the number of times of rinsing in the rinsing step. Dishwasher.

In the present invention, in particular, the control device estimates the amount of dirt from the input on the operation panel, and when the amount of dirt is small, the number of times of rinsing in the rinsing step is reduced to perform washing, so that the amount of water used is small. In addition, since the number of times of rinsing is small, the cleaning temperature at the start of heating rinsing is high, so that the time and power consumption for raising the temperature to the second cleaning temperature by heating rinsing can be reduced.

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, in the heating rinsing step performed at the end of the rinsing step, the control device executes the same operation method as the main washing step. It is a dishwasher.

In the present invention, in particular, in the heating and rinsing step, the injection water power of the washing means is washed at a low output while heating the washing water with the first water supply amount having a small washing water quantity, and the washing is performed by the heating means in the same step. After the water reaches the predetermined rinsing temperature, the washing water is added to the second water supply amount with a large washing water amount, and the washing water power of the washing means is washed at a high output without heating the washing water, The object to be cleaned is sanitarily finished with a predetermined high-temperature rinse. In addition, since washing water is added and washing is performed with high-output jet water power, washing can be performed more reliably. In addition, it is possible to perform energy saving operation without increasing power consumption.

[0048]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) In FIG. 1, the basic configuration is the same as that of the conventional example, and includes a tableware basket 30, a washing tank 31, a water supply means 32, and a water amount detection means 33. The conventional example
The method of the cleaning operation by the control device 1 and the operation panel 2 is different, and the operation is performed by controlling the water supply amount and the injection water power to multiple levels. Therefore, the description will be focused on the operation method in the cleaning step, particularly in the main cleaning step.

In the first embodiment, the cleaning means 3 is provided with a cleaning nozzle 3a and a cleaning pump 3b driven by a DC brushless motor, and the number of rotations thereof is controlled by a command from the control device 1. Thus, the pressurizing capacity of the cleaning pump 3b is controlled. And the cleaning pump 3b
The injection flow rate from the cleaning nozzle 3a changes in conjunction with the pressurizing capacity of the nozzle, and the injection water power is controlled to a multi-level.

The motor for driving the cleaning pump 3 is not limited to the DC brushless motor, but it is needless to say that an induction motor may have any means for controlling the number of revolutions. The water amount detecting means 33 is of a pressure type, and can detect a multi-level water level, at least two-level water level. Needless to say, the float type and other types are also possible.

Next, the operation of the dishwasher of this embodiment will be described. The operation method of the cleaning step is basically the same as that of the conventional one, and thus the description is omitted. In the following, as a characteristic feature of the present embodiment, it will be described that by controlling the water supply amount and the injection water power to multiple levels, it is possible to simultaneously enhance the cleaning power and reduce the power consumption in the main cleaning process.

FIGS. 2 and 3 show a washing temperature chart, washing water supply amount and washing nozzle 3a in a standard operation course.
Shows the injection pressure. In the main washing step of the present embodiment, the water is supplied by the water supply means 32 and the water amount detection means 33 to the first water supply amount having a small amount of cleaning water, and the first water is supplied by the heating means 35.
A first main washing step of washing by heating to the washing temperature is performed first. Since this first water supply amount is smaller than the conventional water supply amount, the heat capacity is small, and the power consumption of the heating means 35 for raising the temperature is reduced. At the same time, if the power consumption, that is, the heating capacity of the heating means 35 is the same, heating is performed in a shorter time than in the conventional example. Since the temperature is raised to the high first cleaning temperature at the stage of the first main cleaning step, the fats and oils are dissolved and washed. Of course, by controlling the rotation of the cleaning pump 3a to be low, the injection pressure of the cleaning nozzle 3 is smaller than the injection pressure of the conventional example. That is, although the injection water power is small and the cleaning effect due to the collision force of the cleaning water is small, the main purpose of dissolving the oil and fat and swelling the rice grain dirt in the first main cleaning step can be achieved.

Next, when the washing water reaches the first washing temperature,
The control device 1 uses the water supply means 32 and the water amount detection means 33 to add the wash water up to the second water supply amount having a large wash water amount.
Then, as a second main washing step, the washing water 3 is washed by switching the power of the injection water to a high output. In the present embodiment, since the second water supply amount is larger than the water supply amount in the conventional example, even if the rotation speed of the motor for driving the cleaning pump 3b is increased to increase the pressurizing capacity as compared with the conventional example, Injection water power can be obtained stably. As described above, since the cleaning can be performed by increasing the injection pressure of the cleaning nozzle 3a, the power of the injection water becomes high.

As a result, in the second main washing step, the rice grain dirt, starch and other adhering dirt already swollen in the first main cleaning step are more strongly affected by the impinging force of the washing water jetted from the washing nozzle 3a. Is washed by. Therefore, a predetermined detergency can be obtained in a short time. Of course, this second
In the main washing process, the temperature of the washing water is lowered due to the effect of the added washing water, but the main purpose of the washing effect due to the collision force of the washing water can be achieved, and the washing was dissolved in the first washing process. Since the fats and oils have already been emulsified with the detergent, there is no danger of recontamination.

In the present embodiment, in the second main washing step, only the washing means 3 is operated without heating the washing water. Only can be even less. In other words, heating energy can be reduced by the amount of water supply,
The power consumption is reduced. As described above, it is possible to simultaneously increase the cleaning power and reduce the power consumption in the main cleaning step. Also, with regard to the heating and rinsing, the power consumption is suppressed by rinsing with the first water supply amount.
Of course, it goes without saying that the amount of water used and the amount of power consumed in the entire cleaning process can be reduced.

The extent to which the temperature of the washing water decreases in the main washing step is the difference between the first and second water supply amounts, the amount of the object to be washed, the temperature of the additional washing water, and the heat capacity of the washing tank 31 and the like. It is needless to say that the time chart as shown in FIG. 2 slightly changes every time the vehicle is driven in this embodiment. In this embodiment, the temperature of the supplied washing water is set to about 20 degrees.

Although the above-mentioned first cleaning temperature is set to about 57 ° C. in this embodiment, from the viewpoint of the type and amount of fats and oils actually adhering to the object to be cleaned, it is about 40 to 55 ° C. ° C
May be set.

The cleaning temperature for the heating and rinsing, that is, the second cleaning temperature is set to about 65 ° C. as in the conventional example. However, in order to further save energy, the temperature is lowered to reduce the operating time of the drying step. May be slightly longer. Of course, also in this embodiment, the operation method as the dishwasher is not limited to the standard course, and an operation in which the drying step is omitted can be selected. In such an operation method, the washing temperature of the heating rinse is further reduced. It may be possible to further save energy.

Further, in this embodiment, as shown in FIG. 3, the increase of the water supply amount and the increase of the injection pressure are performed almost simultaneously at the same time, but the cleaning means 3 is temporarily stopped and the water supply means 32 is stopped. May be operated. Thus, the water amount detecting means 33 can detect the amount of washing water regardless of the circulation of the washing water by the operation of the washing means 3.

(Embodiment 2) In this embodiment, the basic configuration is the same as that of Embodiment 1 and is the same as the configuration of FIG. The second embodiment is different from the first embodiment in the operation method of the main washing step, and this point will be mainly described. That is, when the cleaning water supplied in the main cleaning step is equal to or higher than the first cleaning temperature as shown in FIG. 4, the control device 1 stops the operation of the heating means 35 and performs the main cleaning step. And different.

In this embodiment, in the main washing step, the control device 1 performs the first washing with a small amount of washing water as shown in FIG.
The injection water power of the washing means 3 is reduced to a low output by
The main washing step is performed. In the first main washing step, when the washing means 3 is activated, the washing water is already at a high temperature, so that the fats and oils are particularly quickly dissolved and washed.

Subsequently, after the first cleaning time, the cleaning water is added by the water supply means 32 up to the second water supply amount where the cleaning water amount is large.
Increase the injection pressure of a. That is, the second main washing step in which the injection water power of the washing means 3 is set to a high output is performed. In this step,
Starch and other adhered dirt are washed by the impinging force of the washing water injected from the washing means 3, thereby exhibiting a predetermined washing power in a short time.

In the present embodiment, in the second main washing step, only the washing means 3 is operated without heating the washing water, so that the power consumption in the main washing step does not cause the heating means 35 to operate. The amount can be further reduced by the amount, and energy can be saved.

In the heating and rinsing step, the heating means 35 only needs to have a heating capacity at the first water supply amount.
The power consumption can be reduced. Therefore, the power consumption of the entire device can be reduced, so that it is possible to operate simultaneously with other devices from a power outlet of a general household, and it is possible to improve the usability as a household device.

In the second embodiment, the cleaning water supplied by the water supply means 32 is operated under the condition that only the first water supply amount in the main cleaning step is high. Of course, water supply means 3
2 is connected to a water heater and if high-temperature washing water can be continuously obtained, the first and second washing steps shown in FIG.
Higher than the washing temperature. In such cases,
Needless to say, the duty of the heating means 35 may be low and high, including heating and rinsing.

The above-mentioned first cleaning temperature is set at about 57 ° C., but from the viewpoint of the type and amount of fats and oils actually adhering to the object to be cleaned, the first cleaning temperature is set at about 40 to 55 ° C. Is also good. In addition, the washing temperature of the heating and rinsing,
The washing temperature is set to about 65 ° C. as in the conventional example. However, it is the same as in the first embodiment that the operating temperature of the drying step may be slightly increased by setting the temperature to a low temperature. .

(Embodiment 3) In this embodiment, the basic configuration is the same as that of Embodiment 1, and the description of the basic configuration will be omitted. In the third embodiment, as shown in FIG. 5, a tableware amount detecting means 10 for detecting the amount of an object to be washed is provided on a support portion of the tableware basket 30.
And the control device 15 differs from the first embodiment in that the first water supply amount and the second water supply amount in the main washing process are increased or decreased in conjunction with the dish amount detection signal from the dish amount detection means 10. Things.

In the present embodiment, at the start of the main washing step, the tableware amount detecting means 10 for detecting the amount of the object to be washed is provided by the tableware basket 3.
A weight change of 0 is detected. The control device 15 uses the tableware amount detection signal from the tableware amount detection means 10 to control the tableware basket 3.
The weight of the tableware stored in 0, that is, the amount is estimated. The tableware amount detecting means 10 of this embodiment has a piezoelectric element and generates a voltage in accordance with the weight of the tableware basket 30, that is, the object to be cleaned, thereby detecting the weight of the tableware.

When a large amount of objects to be cleaned are stored, the control device 16 controls so as to increase the first water supply amount and the second water supply amount in the main washing step. This is because, when the amount of the object to be washed is large, the dishwashing water hardly collides directly, that is, dishware having a low washing effect is generated. In order to obtain a predetermined washing performance, the jetting water power of the washing means 3 is required. It is necessary to increase the output or extend the cleaning time. In the third embodiment,
By increasing the amount of cleaning water to be supplied, it is possible to increase the output of the injection water power of the cleaning means 3 and to obtain a predetermined cleaning power regardless of the storage amount of the object to be cleaned.

In particular, FIGS. 6 and 7 show the cleaning temperature chart, the water supply amount and the injection pressure when the second water supply amount in the main washing step is increased in the third embodiment. In this case, in the second main washing step, the jetting pressure and the flow rate are large, so that the washing power is further enhanced as compared with the first embodiment. In addition, by stopping the heating means 35, it is possible to perform an energy-saving operation without increasing the power consumption. Of course, the washing temperature at the start of the second main washing step is lower than that of the first embodiment,
In the main washing step, since the washing effect of the jet water power is higher, a predetermined washing power can be obtained even for a large amount of objects to be washed.

It is needless to say that, when the storage amount of the object to be cleaned is a standard amount or a small amount, such an operation is performed, the cleaning power becomes stronger than that of the first embodiment.

Of course, when the storage amount is small, at least the first water supply amount and the second water supply amount can be reduced in the main washing step. In particular, by setting the second water supply amount to the same level as in the conventional example, the maximum value of the injection water power is suppressed, noise can be reduced most of the time, and a predetermined cleaning power can be obtained.

In this embodiment, the temperature of the washing water to be supplied is set to about 20 degrees. Also, with regard to the heating and rinsing, the power consumption is suppressed by rinsing with the first water supply amount.

(Embodiment 4) In this embodiment, the basic configuration is the same as that of Embodiment 1, and the description of the basic configuration is omitted. In the third embodiment, as shown in FIG. 8, a dirt amount detecting means 20 for detecting the dirt amount of the object to be cleaned is provided, and the control device 21 operates in conjunction with the dirt amount detecting signal of the dirt amount detecting means 20. The second embodiment differs from the first embodiment in that the first water supply amount and the second water supply amount in the main washing step are increased or decreased.

In this embodiment, the dirt amount detecting means 20 for detecting the amount of dirt on the object to be cleaned has a light emitting element and a light receiving element, and is stored in the dish basket 30 due to a change in turbidity of the washing water. The amount of stains on the cooked dishes is detected. The controller 21 increases the first water supply amount and the second water supply amount when there is a large amount of dirt. By increasing the amount of washing water to be supplied, the output of the jet water power of the washing means 3 can be increased, and a predetermined washing power can be obtained irrespective of the amount of dirt on the object to be washed. For example, if the turbidity of the washing water changes greatly immediately after the start of the main washing step, it is possible to increase the first water supply amount assuming that the amount of dirt is large.

Normally, the amount of dirt is often less than the amount expected by the equipment, and the turbidity of the washing water does not change significantly except for the influence of the detergent. Often done.

That is, as shown in FIGS. 9 and 10, in the main washing step, the addition of the washing water at the second water supply amount is smaller than in the other embodiments 1 to 3. As a result, the decrease in the cleaning temperature when changing from the first water supply amount to the second water supply amount is reduced. Since an appropriate cleaning power is obtained and the cleaning temperature is high when the heating and rinsing step is started, an energy-saving operation without increasing power consumption can be performed.

(Embodiment 5) In this embodiment, the basic configuration is the same as that of Embodiment 1, and the description of the basic configuration is omitted. In the third embodiment, as shown in FIGS. 11 and 12, an operation panel 26 for specifying the amount of the object to be cleaned or the amount of dirt is provided. This embodiment is different from the first embodiment in that the first water supply amount and the second water supply amount in the main washing step are increased or decreased.

In this embodiment, the amount of the object to be cleaned or the amount of dirt is designated on the operation panel 26, and the control device 25 determines the first water supply amount according to the storage amount of the object to be cleaned or the amount of dirt. And increase the second water supply amount. The operation panel 26 has switches for selecting the amount of dishes, the amount of dirt, and the degree of dirt. When the amount of dishes and the amount of dirt are large in the selection here, the control device 25 increases the first water supply amount and the second water supply amount.

In other words, increasing the amount of washing water increases the power of the jetting water of the washing means 3 and obtains a predetermined washing power regardless of the amount of dirt on the object to be washed.
Further, in this manner, a predetermined detergency can be easily obtained with a low-cost configuration in which only an instruction is given on the operation panel 26 without providing any dish amount detecting means or dirt amount detecting means. In particular, increasing the second water supply amount in the main washing step increases the detergency of the cleaning means 3 and enables energy saving operation without increasing power consumption.

As in the fifth embodiment, if the operation panel 26 is capable of selecting the degree of sticking of dirt, the control device 25 performs the first cleaning in the main washing process based on a command from the operation panel 26. Washing time with one water supply,
Alternatively, the cleaning time at the second water supply amount can be increased or decreased.

That is, if the degree of sticking of the dirt on the object to be cleaned is specified on the operation panel 26, the control device 25 determines the cleaning time at the first water supply amount or the second water supply amount according to the state of adhesion of the dirt. The cleaning time is extended. Prolonging the cleaning time in the main cleaning step increases the cleaning power by spraying the cleaning water, so that a predetermined cleaning power can be obtained regardless of the state of contamination of the object to be cleaned.

In the main washing step, particularly, extending the washing time with the first water supply amount enhances the washing power by the swelling effect on the rice grains even among the sticky dirt, and the jetting power of the washing means 3 is increased. Since the output is low, the noise is low for many hours during operation, including the rinsing step. Also, in the main washing process, increasing the second water supply amount is as follows.
Among the sticky dirt, it is possible to perform the energy-saving operation without increasing the power consumption by increasing the cleaning power by the jet collision with the rice grains.

In each of the above embodiments, for example, the control device 25 may estimate the amount of dirt based on a command from the operation panel 26 and increase or decrease the number of times of rinsing in the rinsing step. Of course, it is needless to say that the number of times of rinsing may be increased or decreased in conjunction with the stain amount detection signal from the stain amount detecting means.

In this manner, in the fifth embodiment, the control device 25 estimates the amount of dirt from the input on the operation panel 26, and when the amount of dirt is small, the number of times of rinsing in the rinsing step is reduced to perform cleaning. , Water usage is small. In addition, as the number of times of rinsing in the rinsing step is smaller, as shown in FIG. 13, the cleaning temperature at the time of starting the final heating rinsing becomes higher. The time required to raise the temperature to the second cleaning temperature by the heating rinsing can be reduced, and the power consumption of the heating means 35 and the cleaning means 3 can be reduced.

Of course, the command method on the operation panel 26 is not limited to the one shown in FIG. 12 of the present embodiment, and it goes without saying that a driving course other than the standard course can be selected. Absent.

In each of the above embodiments, the control device may execute the same operation method as that of the main washing step in the heating and rinsing step performed at the end of the rinsing step.

In this operation method, in the heating and rinsing step, the controller cleans the jet water power of the washing means with the first water supply amount having a small washing water amount while heating the washing water at a low output, and heats in the same step. After the washing water reaches the predetermined rinsing temperature by the means, the washing water is added up to the second water supply amount where the washing water amount is large and the washing water power of the washing means is washed at a high output without heating the washing water. . This allows the object to be cleaned to be sanitarily finished by rinsing at a predetermined high temperature, and further enhances the cleaning effect by the power of the jet water. In addition, even in the heating and rinsing step, it is possible to perform an energy saving operation without increasing the power consumption.

In each of the above-described embodiments, the water supply amount and the injection water power of the washing means are changed in two stages. However, the water supply amount is controlled at more levels, or the control is performed so as to change continuously. It may be. of course,
It goes without saying that the heating means is stopped when the water supply amount is large and the injection water power is set to a high output.

In each of the above-described embodiments, a washing nozzle that rotates substantially horizontally is mounted as washing means.
The cleaning means is not limited to this, but may be any cleaning means of a type in which the cleaning water is pressurized by a pump and jetted.
For example, a combination of a fixed washing nozzle and a rotating dish basket may be used.

Further, in each of the above-described embodiments, the description has been made assuming that the cleaning process of the standard course starts from the main cleaning process. However, prior to the main cleaning process, a pre-cleaning process for rinsing the object to be cleaned with cleaning water is performed. It may have a process. Of course, in this case, it is needless to say that a detergent introduction means for introducing the detergent may be provided, and the detergent may be introduced at the start of the main washing step.

In each of the above-described embodiments, a part of the main washing process supplies the same or a large amount of washing water as that of the conventional example. Needless to say, it is assumed that the storage amounts are substantially the same. In addition, especially in the rinsing step excluding the heating rinsing, even if the water amount is increased to be equal to or more than the conventional example,
Almost the same effects can be obtained.

[0094]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, there is provided a dish basket for storing an object to be washed, a washing tank, a means for supplying washing water,
Controlling the amount of cleaning water, the cleaning means for injecting the cleaning water under pressure, the heating means for the cleaning water, the temperature detecting means for the cleaning water, the cleaning means and the water supply means, etc. to control the rinsing process to facilitate rinsing. A control device for executing the process, wherein the control device cleans the injection water power of the cleaning means at a first water supply amount while heating the cleaning water at a low output in the main cleaning process. After the washing water reaches the first washing temperature by the heating means, the washing water is added to the second water supply amount and the jet water power of the washing means is washed at a high output, so that the washing is performed in the main washing step. Since the cleaning is performed by heating to the first cleaning temperature with the first water supply amount having a small water amount, the power consumption of the heating means is reduced. In addition, heating is performed in a short time. At this stage, the fats and oils are washed. Subsequently, the washing water is added up to the second water supply amount with a large washing water amount, and the washing is performed at a high output, so that the starch and other attached dirt are washed by the collision force of the injected washing water, Obtain a predetermined detergency in a short time. Therefore, the power consumption in the main washing process is small,
A dishwasher capable of obtaining a predetermined washing power in a short time can be provided.

According to a second aspect of the present invention, there is provided a washing tank, washing water supply means, washing water amount detecting means, washing means for pressurizing and jetting the washing water, washing water heating means, A water temperature detecting means, and a control device for controlling a cleaning means, a water supply means, and the like to execute a main washing step and a rinsing step, wherein the control apparatus sets the cleaning water temperature to a first cleaning If the temperature is equal to or higher than the temperature, the washing water power of the washing means is washed at a low output without heating the washing water at the first water supply amount, and after the first washing time has elapsed, the washing water is reduced to the second water supply amount. In addition, if the washing water in the main washing step is equal to or higher than the first washing temperature, the operation of the heating means is stopped, and the power consumption is reduced. The amount is reduced.

As for the detergency, in the main washing step, the grease is washed at a high temperature with a low output of the injection water power of the washing means at a first water supply amount with a small washing water amount. Subsequently, washing water is added to the second water supply amount, which has a large amount of washing water, and is washed at a high output, so that starch and other attached dirt are washed by the collision force of the injected washing water, A dishwasher that exhibits a predetermined cleaning power in a short time can be provided.

The third aspect of the present invention is the first or second aspect.
In the invention of the above, the control device stops the heating means in the main washing step in which the injection water power is set to a high output, and performs cleaning for a predetermined second cleaning time. Since the washing power is obtained by washing only for the washing time and the second washing time is operated without heating the washing water, it is possible to provide a dishwasher in which the power consumption in the main washing step is further reduced.

According to a fourth aspect of the present invention, in accordance with any one of the first to third aspects of the present invention, the control device is provided with a dish amount detecting means for detecting an amount of the object to be washed. In conjunction with the detection signal, the first water supply amount and the second water supply amount in the main washing step are increased / decreased, so that the tableware amount detecting means for detecting the amount of the object to be washed can reduce the amount of tableware stored in the tableware basket. The first water supply amount and the second water supply amount are increased when a large amount of articles to be cleaned is stored, as detected from the weight change. By increasing the amount of washing water, the output of the jet water power can be increased, and a predetermined washing power can be obtained regardless of the storage amount of the object to be washed. In particular, increasing the second water supply amount in the main washing step can provide a dishwasher capable of performing an energy saving operation without increasing the power consumption while increasing the washing power.

According to the invention set forth in claim 5, claims 1 to 1 are provided.
4. In the invention described in any one of 4 above, a dirt amount detecting means for detecting the dirt amount of the object to be cleaned is provided, and the control device interlocks with the dirt amount detection signal to control the first water supply amount in the main washing step. By increasing or decreasing the second water supply amount, the dirt amount detecting means for detecting the dirt amount of the object to be cleaned detects the dirt amount of the tableware stored in the tableware basket from the change in the turbidity of the cleaning water. When there is a large amount of dirt, the first water supply amount and the second water supply amount are increased. By increasing the amount of the washing water, the output of the jet water power can be increased, and a predetermined washing power can be obtained regardless of the amount of dirt on the object to be washed. In particular, increasing the second water supply amount in the main washing step can provide a dishwasher that performs an energy-saving operation without increasing the power consumption while increasing the cleaning power.

According to the sixth aspect of the present invention, the first to fifth aspects are provided.
5. In the invention according to any one of the first to fifth aspects, an operation panel for designating an amount of the object to be cleaned or an amount of dirt is provided, and the control device is configured to control the first water supply amount in the main cleaning step and the By increasing or decreasing the second water supply amount, the amount of the object to be cleaned or the amount of dirt is designated on the operation panel,
The first water supply amount and the second water supply amount are increased according to the storage amount of the object to be cleaned and the amount of dirt. Increasing the amount of washing water
A high output of the injection water power can be obtained, and a predetermined cleaning power can be obtained irrespective of the amount of dirt on the object to be cleaned. In particular, it is possible to easily obtain a predetermined cleaning power without providing a dish amount detecting means and a soil amount detecting means, and to increase the second water supply amount in the main cleaning step. A dishwasher that performs energy saving operation without increasing the amount can be provided.

According to the invention of claim 7, claims 1 to 1
6. In the invention according to any one of the items 6, the control panel is provided with an operation panel for selecting a degree of sticking of dirt, and the control device performs a cleaning time at the first water supply amount in the main cleaning step based on a command from the operation panel, or By increasing or decreasing the cleaning time at the second water supply amount, the degree of sticking of dirt on the object to be cleaned is specified on the operation panel, and according to the state of adhesion of dirt,
The cleaning time at the first water supply amount or the cleaning time at the second water supply amount is extended. Extending the cleaning time increases the cleaning power by spraying the cleaning water, so that a predetermined cleaning power is obtained irrespective of the contamination state of the object to be cleaned. In particular, extending the washing time with the first water supply amount in the main washing step enhances the washing power due to the swelling effect on the rice grains among the sticky dirt, and furthermore, the jet water power has a low output, so that the noise is low. It is. In addition, increasing the second water supply amount in the main washing step increases dishwashing power by jet collision against rice grains among sticky dirt, and enables energy saving operation without increasing power consumption. Machine can be provided.

According to the invention described in claim 8, claims 1 to
7. In the invention according to any one of the first to seventh aspects, the control device estimates the amount of dirt based on a command from the operation panel, and increases or decreases the number of times of rinsing in the rinsing step. The amount is estimated, and when the amount of dirt is small, the number of times of rinsing in the rinsing step is reduced for washing, so that the amount of water used is small. Further, since the washing temperature at the start of the heating rinsing is high due to the small number of times of rinsing, it is possible to provide a dishwasher capable of reducing the time and power consumption for raising the temperature to the second washing temperature by the heating rinsing.

According to the ninth aspect of the present invention, claims 1 to 1 are provided.
8. In the invention according to any one of the first to eighth aspects, in the heating and rinsing step performed at the end of the rinsing step, the control device executes the same operation method as in the main washing step, so that the first water supply with a small amount of washing water in the heating and rinsing step. After the washing water reaches a predetermined rinsing temperature in the same step by heating the washing water at a low output, the washing water power of the washing means is reduced by a small amount until the second supply amount of washing water is increased. By adding washing water and washing the jet water power of the washing means at high output without heating the washing water, the object to be washed is sanitarily finished by rinsing at a predetermined high temperature. Further, since washing is performed at a high output by adding washing water, washing can be performed more reliably. In addition, it is possible to provide a dishwasher capable of performing energy saving operation without increasing power consumption.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a time chart showing a cleaning temperature in Example 1;

FIG. 3 is a time chart showing a water supply amount and a jet pressure of a cleaning nozzle according to the first embodiment.

FIG. 4 is a time chart showing a cleaning water temperature according to the second embodiment.

FIG. 5 is a sectional view of a main part of a dishwasher according to a third embodiment of the present invention.

FIG. 6 is a time chart showing a cleaning temperature in Example 3;

FIG. 7 is a time chart showing a water supply amount and a jet pressure of a cleaning nozzle according to the third embodiment.

FIG. 8 is a sectional view of a main part of a dishwasher according to a fourth embodiment of the present invention.

FIG. 9 is a time chart showing a cleaning temperature in Example 4;

FIG. 10 is a time chart showing a water supply amount and a jet pressure of a cleaning nozzle according to the fourth embodiment.

FIG. 11 is a sectional view of a main part of a dishwasher according to a fifth embodiment of the present invention.

FIG. 12 is a front view of an operation panel according to the fifth embodiment.

FIG. 13 is a time chart showing the cleaning temperature when the number of times of rinsing is different in Example 5;

FIG. 14 is a sectional view of a main part of a conventional dishwasher.

FIG. 15 is a time chart showing a cleaning temperature of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control device 2 Operation panel 3 Cleaning means 3a Cleaning nozzle (cleaning means) 3b Cleaning pump (cleaning means) 10 Tableware amount detection means 20 Dirt amount detection means 30 Tableware basket 31 Cleaning tank 32 Water supply means 33 Water amount detection means 35 Heating means 36 Temperature detection means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Inada 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Takashi Miyauchi 1006 Kadoma Kadoma, Kadoma City Osaka Pref. Terms (Reference) 3B082 BD01 BD05 DB01 DC04 DC05

Claims (9)

[Claims] 1. A tableware for storing an object to be washed, a washing tank, a means for supplying washing water, a means for detecting the amount of washing water, a washing means for pressurizing and jetting washing water, and a heating means for washing water Means, a temperature detecting means for the washing water, and a control device for controlling the washing means, the water supply means and the like to execute the main washing step and the rinsing step. After the cleaning water is heated to a first cleaning temperature by the heating means in the same step, the cleaning water is cleaned up to a second water supply amount by lowering the injection water power of the cleaning means by the supplied water amount and heating the cleaning water in the same step. A dishwasher for washing by adding water and making the jetting water power of the washing means a high output. 2. A washing machine, a washing tank, a washing water supply unit, a washing water amount detecting unit, a washing unit for pressurizing and jetting the washing water, and a heating unit for washing the washing water. Means, a temperature detection means for the washing water, and a control device for controlling the washing means and the water supply means for executing the main washing step and the rinsing step. When the temperature is equal to or higher than the first cleaning temperature, the injection water power of the cleaning means is set to a low output at the first water supply amount, the cleaning is performed without heating the cleaning water, and after the first cleaning time has elapsed, A dishwasher for washing by adding washing water up to two water supply amounts and increasing the jet water power of the washing means to a high output. 3. The dishwasher according to claim 1, wherein the control device stops the heating means and performs the washing for a predetermined second washing time in the main washing step in which the jet water power is set to a high output. 4. The control device includes a tableware amount detecting means for detecting an amount of an object to be washed, and the control device interlocks with the tableware amount detection signal to control a first water supply amount and a second water supply amount in the main washing process. The dishwasher according to any one of claims 1 to 3, wherein the number is increased or decreased. 5. A dirt amount detecting means for detecting an amount of dirt on an object to be cleaned is provided, and the control device determines a first water supply amount and a second water supply amount in the main washing step in conjunction with the dirt amount detection signal. The dishwasher according to any one of claims 1 to 4, wherein the dishwasher is increased or decreased. 6. An operation panel for designating an amount of an object to be cleaned or an amount of dirt is provided, and the control device determines a first water supply amount and a second water supply amount in the main washing step based on a command from the operation panel. The dishwasher according to claim 5, wherein the number is increased or decreased. 7. An operation panel for selecting a degree of sticking of dirt is provided, and the control device determines a cleaning time at the first water supply amount or a second water supply amount in the main cleaning step based on a command from the operation panel. 2. The cleaning time of the washing machine is increased or decreased.
The dishwasher according to any one of claims 1 to 6. 8. The dishwasher according to claim 1, wherein the control device estimates the amount of dirt based on a command from the operation panel to increase or decrease the number of times of rinsing in the rinsing step. 9. The dishwasher according to claim 1, wherein in the heating and rinsing step performed at the end of the rinsing step, the control device executes the same operation method as in the main washing step.