JP3985398B2 - Dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a dishwasher for washing and drying dishes.RelatedTo do.
[0002]
[Prior art]
  A conventional dishwasher will be described with reference to FIGS. As a configuration for cleaning and drying the tableware, the table includes a tableware basket 30 for storing the tableware to be cleaned, a cleaning tank 31, and a water supply valve for supplying cleaning water as the water supply means 32. 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 detects a water pressure corresponding to the depth of the cleaning water (common name, PS system) is adopted. Of course, there may be a float method in which the water level is detected by floating of the float, or a flow rate measurement method in which the amount of water supplied from the water supply means 32 is directly measured.
[0003]
  The cleaning means 34 for cleaning the object to be cleaned by injecting the cleaning water includes a cleaning nozzle 34a for injecting pressurized cleaning water and a cleaning pump 34b for pressurizing the cleaning water. Moreover, the heating means 35 which heats washing water, and the temperature detection means 36 of washing water are provided.
[0004]
  The operation is controlled by a control device 37 that controls the water supply means 32, the cleaning pump 34a, the heating means 35 and the like. In addition, an operation panel 37 for the user to operate the control device 37 is provided. Then, in response to an input from the operation panel 37, the control device 37 executes several operation methods in which the cleaning time and the cleaning or rinsing temperature are changed. Each of the above components is housed in a housing 39.
[0005]
  In addition, although illustration is abbreviate | omitted, it has a drainage pump for discharging washing water out of the 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, etc. Thus, the stored object to be cleaned can be cleaned and dried fully automatically.
[0006]
  In such a dishwasher, the tableware basket 30 is pulled out with the lid opened, and the tableware to be cleaned is stored. Next, the tableware basket 30 is pushed into the washing tank 31 and a detergent is put in. The lid is closed, the operation course is selected on the operation panel 38, and the operation is started. Here, it is assumed that a standard operation course having a cleaning process and a drying process is selected. Hereinafter, such driving is also referred to as a standard course.
[0007]
  First, a water supply step of supplying a predetermined amount of cleaning water for the operation of pressurizing the cleaning water to the cleaning tank 31 by the water supply means 32 and the water amount detection means 33 is executed. Subsequent to the water supply step, a main washing step is performed in which the washing water is sprayed from the ejection nozzle of the washing nozzle 34a together with the detergent while being pressurized by the washing pump 34b and heated to the first first washing temperature by the heating means 35. Is called.
[0008]
  The heating means 35 is generally a heating element of about 1000 w and is operated simultaneously with the cleaning means 34, so that the power consumption of the entire device is large. Therefore, this dishwasher is normally connected to a dedicated power outlet and cannot be operated simultaneously with other devices with high power consumption.
[0009]
  In the main washing process, the washing water is jetted vertically or obliquely upward from the jet nozzle of the washing nozzle 34a. In addition, the cleaning nozzle 34a is rotated substantially in one direction at a substantially constant rotational angular velocity by the injection reaction force of the cleaning water. The tableware is washed by the action of the collision force (also called mechanical force), detergent, heat, etc. of the washing water sprayed from the washing nozzle 34a rotating in this way. The energy of the injected cleaning water is proportional to the pressure and the flow rate, and this is also referred to as jet water power below.
[0010]
  The washing water rises to the first first washing temperature, and after passing through the main washing process for a predetermined time, the washing water containing dirt washed away from the tableware etc. is discharged to the outside by the drainage pump. enter. Subsequently, a water supply process for newly supplying cleaning water, and a rinsing process in which cleaning water is sprayed from the cleaning nozzle 34a in order to rinse the dishes contaminated with detergents and residual vegetables (stained dishes are also referred to as residual vegetables), The draining step is continuously repeated four times to complete the cleaning step. That is, the cleaning process includes such a main cleaning process and a rinsing process.
[0011]
  In addition, in order to perform the drying process of the next process in a short time, the final rinsing process is a heating rinsing process performed while heating the cleaning water to the second cleaning temperature by the heating means 35. Here, in general, the first cleaning temperature is often equal to or lower than the second cleaning temperature.
[0012]
  The first cleaning temperature described above is often set to about 55 to 60 ° C., but it is set to about 40 to 55 ° C. from the viewpoint of the type and amount of fat and oil actually attached to the object to be cleaned. You may do it. In addition, the second cleaning temperature is set to about 75 ° C. or higher in order to finish the object to be cleaned more hygienically, but even if it is about 50 to 65 ° C., the operation time of the drying process is slightly increased. This is what you need to do.
[0013]
  Subsequent to the above-described washing process, the blower and the heating means 35 are operated to discharge moisture in the washing tank 31, and a drying process for heating and evaporating water droplets of the washing water attached to the tableware is performed. Finish driving.
[0014]
[Problems to be solved by the invention]
  In the dishwasher having the above-described conventional configuration, in the main washing process, the washing pump 34b supplies as much washing water as necessary to stabilize the operation of pressurizing the washing water, and is washed while being heated. . On the other hand, various kinds of dirt such as starch, protein, and fat are attached to the object to be cleaned, and there is an appropriate cleaning method according to the kind and attached state of the dirt, so the control device 37 realizes this. Do as you do.
[0015]
  First, regarding oil and fat, in order to melt | dissolve with a heat | fever, it is necessary to heat the washing | cleaning water to inject to 1st washing | cleaning temperature. However, the amount of washing water in the main washing process is usually about 3 to 4 L in a general household dishwasher, and in order to heat this washing water to the first washing temperature, Power consumption is large. That is, it is difficult to save energy in the main washing process.
[0016]
  For example, just to heat 3 L of washing water at 40 degrees, the heating efficiency is set to 60% and an electric energy of about 0.2 kwh is required. Of course, the same applies to the case where the washing water is heated by rinsing with heating.
[0017]
  Therefore, in the dishwasher having the above-described conventional configuration, the heating unit 35 is 1000 W, the cleaning unit 34 is 100 W, and the heating unit 35 occupies most of the energy consumed in one operation. It is obvious.
[0018]
  Next, with regard to the adhesion of starch, especially rice grains, and leftovers, the washing pump 34b has a higher pressurization capacity and the washing nozzle 34a has a larger spray water power, thereby washing the object to be washed and dirt. The cleaning effect by the collision of water is enhanced, and the cleaning time can be shortened.
[0019]
  In this regard, several cleaning methods have been conventionally proposed in which the pressurization capacity of the cleaning pump 34a is changed in the main cleaning process. For example, Japanese Patent Application Laid-Open No. 59-155230 discloses a cleaning method in which the main cleaning process is started with a weak injection and finished with a strong injection. Japanese Patent Application Laid-Open No. 5-146391 discloses that a cleaning process is started with low power and then cleaned with high power after reaching a predetermined temperature.
[0020]
  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. In order to obtain stable jet water power at this time, it is necessary to supply more washing water than when operating with weak jet 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, since the amount of power consumed by the heating means 35 is limited by the capacity of the power outlet, heating takes time.
[0021]
  Therefore, in the dishwasher of the above-mentioned conventional configuration, in order to increase the cleaning power, there is a problem that the power consumption increases and the operation time becomes longer.
[0022]
  The present invention solves the problems of the conventional dishwasher as described above.TheIn particular, during the main washing process, the amount of water supplied and the power of the jet water from the washing meansControlThe purpose of the present invention is to provide a dishwasher that can increase the cleaning power and at the same time reduce the power consumption of the heating means.
[0023]
[Means for Solving the Problems]
  The dishwasher of the present invention includes a tableware basket for storing objects to be cleaned,Houses the tableware basketA washing tank;In the washing tankWash waterWater supplyWater supply means and cleaning waterDetect water volumeWater volume detection means;By washing pumpPressurize the wash waterFrom the cleaning nozzleCleaning means to spray and cleaning waterTo heatHeating means and washing waterDetect temperatureTemperature sensing means;SaidWashing handsStepControl and main washingAboutWith control device to executeAnd a tableware amount detecting means for detecting the amount of the object to be cleaned.The control device,In the main washing process, with the first water supplySaidLow power jet fuel power for cleaning meansAnd until the first cleaning temperature is reached by the heating means.Wash while heating wash waterMore than the first water supply amount by the first main washing step and then by the water supply meansAdd wash water to the 2nd water supplyThe aboveThe spray water power of the cleaning meansFrom the first main washing processWash with high powerWhile performing the 2nd main washing process, it was made to increase or decrease the 1st water supply amount and the 2nd water supply amount in a main washing process by the output of the said tableware amount detection meansIs.
[0024]
  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 water supplied with a small amount of washing water, so that the power consumption for heating the washing water by the heating means is reduced. Further, the cleaning water is heated in a short time. When the temperature reaches the first washing temperature, the fats and oils are dissolved and washed. Subsequently, since the washing water is added to the second water supply amount with a large amount of washing water and washed with high-power jet water power, starch and other adhering dirt are washed away by the impact force of the jetted washing water. Thus, 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.Further, the tableware amount detecting means for detecting the amount of the object to be cleaned detects the amount of the tableware stored in the tableware basket from the change in its weight, and when a large amount of the object to be cleaned is stored, the first water supply amount And the second water supply amount is increased. By increasing the amount of washing water, it is possible to increase the power of jet water power and obtain a predetermined washing power regardless of the amount of objects to be washed. In particular, by increasing the second water supply amount in the main washing step, it is possible to perform an energy saving operation that enhances the cleaning power and does not increase the power consumption.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
  The invention according to claim 1 is a tableware basket for storing an object to be cleaned.Houses the tableware basketA washing tank;In the washing tankWash waterWater supplyWater supply means and cleaning waterDetect water volumeWater volume detection means;By washing pumpPressurize the wash waterFrom the cleaning nozzleCleaning means to spray and cleaning waterTo heatHeating means and washing waterDetect temperatureTemperature sensing means;SaidWashing handsStepControl and main washingAboutWith control device to executeAnd a tableware amount detecting means for detecting the amount of the object to be cleaned.In the main washing process, the control device uses the first water supply amount.SaidLow power jet fuel power for cleaning meansAnd until the first cleaning temperature is reached by the heating means.Wash while heating the wash waterMore than the first water supply amount by the first water washing step and then by the water supply meansAdd wash water to the 2nd water supplyThe aboveThe spray water power of the cleaning meansFrom the first main washing processWash with high powerWhile performing the 2nd main washing process, it was made to increase or decrease the 1st water supply amount and the 2nd water supply amount in a main washing process by the output of the said tableware amount detection meansThat is.
[0026]
  According to this invention, in the main washing step, the washing is performed by heating to the first washing temperature with the first amount of water supplied with a small amount of washing water, so the power consumption of the heating means is reduced. Moreover, heating is performed in a short time. At this stage, fats and oils are washed. Subsequently, since the washing water is added to the second water supply amount with a large amount of washing water and washed with a high-power jet water power, the impact force of the washing water on which starch and other attached dirt are jetted more strongly As a result of the cleaning, a predetermined cleaning power is obtained in a short time. At this time, since the washing water is operated without being heated, the power consumption in the main washing process can be reduced as compared with the conventional one.Further, the tableware amount detecting means for detecting the amount of the object to be cleaned detects the amount of the tableware stored in the tableware basket from the change in its weight, and when a large amount of the object to be cleaned is stored, the first water supply amount And the second water supply amount is increased. By increasing the amount of washing water, it is possible to increase the power of jet water power and obtain a predetermined washing power regardless of the amount of objects to be washed. In particular, by increasing the second water supply amount in the main washing step, it is possible to perform an energy saving operation that enhances the cleaning power and does not increase the power consumption.
[0027]
【Example】
  Embodiments of the present invention will be described below with reference to the drawings.
[0028]
  Example 1
  In FIG. 1, the basic configuration is the same as 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 is different in the method of cleaning operation by the control device 1 and the operation panel 2, and is operated by controlling the water supply amount and the spray water power to multiple levels. Therefore, the operation method in the cleaning process, particularly the main cleaning process will be mainly described.
[0029]
  In the first embodiment, as the cleaning means 3 for that purpose, a cleaning nozzle 3a and a cleaning pump 3b driven by a DC brushless motor are provided, and by controlling the number of rotations according to a command from the control device 1, The pressurization capacity of the cleaning pump 3b is controlled. Then, the injection flow rate from the cleaning nozzle 3a changes in conjunction with the pressurization capacity of the cleaning pump 3b, and the spray water power is controlled to multiple levels.
[0030]
  Needless to say, the motor for driving the cleaning pump 3 is not limited to DC brushless, and an induction motor may have a means for controlling the rotational speed. The water amount detection means 33 is a pressure method and can detect a multi-level water level, at least two water levels. Needless to say, the float type and other methods are also possible.
[0031]
  Next, the operation of the dishwasher of this embodiment will be described. Since the operation method of the cleaning process is basically the same as the conventional one, the description thereof is omitted. Hereinafter, as a characteristic feature of the present embodiment, the point that the cleaning power can be enhanced and the power consumption can be simultaneously reduced in the main cleaning process by controlling the water supply amount and the jet water power to multiple levels.
[0032]
  2 and 3 show a cleaning temperature chart, a supply amount of cleaning water, and an injection pressure of the cleaning nozzle 3a in a standard operation course. In the main washing process of the present embodiment, the first water which is supplied by the water supply means 32 and the water amount detection means 33 to the first water supply amount with a small amount of cleaning water and heated to the first cleaning temperature by the heating means 35 for cleaning. A washing step is first performed. Since the 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 increasing 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, the heating is performed in a shorter time than the conventional example. In the stage of the first main washing process, the oil and fat are dissolved and washed because the temperature reaches the first washing temperature which is high. 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. In other words, the jet water power is small and the cleaning effect due to the collision force of the cleaning water is small. However, in this first main cleaning step, the main purpose of dissolving the fats and oils and the cleaning effect due to the swelling of the rice grain stains can be achieved.
[0033]
  Next, when the cleaning water reaches the first cleaning temperature, the control device 1 adds the cleaning water to the second water supply amount with a large cleaning water amount by the water supply means 32 and the water amount detection means 33. Then, as the second main washing step, washing is performed by switching the spray water power of the washing means 3 to a high output. In this embodiment, since the second water supply amount is larger than the water supply amount of the conventional example, even if the number of rotations of the motor that drives the cleaning pump 3b is increased to increase the pressurization capacity thereof compared to the conventional example, The jet 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 spray water power becomes high output.
[0034]
  Thus, in the second main washing process, the rice grain dirt, starch, and other adhering dirt already swollen in the first main washing process are more strongly washed by the collision force of the washing water sprayed from the washing nozzle 3a. The Therefore, a predetermined cleaning power is obtained in a short time. Of course, in the second main washing step, the temperature of the washing water is lowered due to the influence of the added washing water, but the main purpose of the washing effect by the collision force of the washing water can be achieved. Since the fats and oils dissolved in the washing process are already emulsified with the detergent, there is no fear of recontamination.
[0035]
  Further, in this embodiment, in this second main washing step, only the cleaning means 3 is operated without heating the washing water, so that the power consumption in the main washing step is further increased by the amount that the heating means 35 does not operate. Can be reduced. That is, the heating energy can be reduced by the amount of water supply deleted, and the power consumption is reduced. Thus, it is possible to simultaneously increase the cleaning power and reduce the power consumption in the main cleaning process. Moreover, also about the heat | fever rinse, suppression of the power consumption is aimed at by rinsing with the 1st water supply amount. Of course, it goes without saying that the amount of water used and power consumption can be reduced throughout the cleaning process.
[0036]
  In addition, the width | variety in which the washing water temperature falls in the main washing process depends on the combination of the difference between the first and second water supply amounts, the amount of the object to be cleaned, the temperature of the added washing water, and the heat capacity of the washing tank 31 and the like. Needless to say, in this embodiment, the time chart as shown in FIG. 2 slightly varies with each operation. In this embodiment, the temperature of the wash water supplied is set to about 20 degrees.
[0037]
  The first cleaning temperature is set to about 57 ° C. in this embodiment, but is set to about 40 to 55 ° C. in view of the type and amount of oil and fat actually attached to the object to be cleaned. You may do it.
[0038]
  In addition, the washing temperature of the heat rinse, that is, the second washing temperature is set to about 65 ° C. as in the conventional example, but for further energy saving, the temperature is lowered to slightly increase the operation time of the drying process. It may be. Of course, even in this embodiment, the operation method as a dishwasher is not limited to the standard course, and an operation in which the drying process is omitted can be selected. In such an operation method, the washing temperature for the heat rinse is further lowered. It may be present and further energy saving can be achieved.
[0039]
  In this embodiment, as shown in FIG. 3, the increase in the water supply amount and the increase in the injection pressure are performed almost simultaneously, but the cleaning means 3 is temporarily stopped and the water supply means 32 is operated. It may be. Thus, the water amount detection means 33 can detect the amount of cleaning water irrespective of the circulation of the cleaning water by the operation of the cleaning means 3.
[0040]
  (Example 2)
  Since the basic configuration of the present embodiment is the same as that of the first embodiment and is the same as that of FIG. 1, the description of the basic configuration is omitted. The second embodiment is different from the first embodiment in the operation method of the main washing process, and this point will be mainly described. That is, as shown in FIG. 4, if the washing water supplied in the main washing step is equal to or higher than the first washing temperature, the control device 1 stops the operation of the heating means 35 and performs the main washing step. Is different.
[0041]
  In the present embodiment, the control device 1 performs the first main washing step in the main washing step with the first water supply amount having a small amount of washing water as already shown in FIG. Do. In this first main washing step, since the washing water is already at a high temperature when the washing means 3 is activated, the fats and oils are particularly quickly dissolved and washed.
[0042]
  Subsequently, after the first cleaning time, cleaning water is added by the water supply means 32 to the second water supply amount with a large amount of cleaning water, and the rotation of the cleaning pump 3b is increased to increase the injection pressure of the cleaning nozzle 3a. That is, the 2nd main washing process which made the spray water power of washing means 3 high output is performed. In this step, starch and other adhering dirt are cleaned by the collision force of the cleaning water sprayed from the cleaning means 3, thereby exhibiting a predetermined cleaning power in a short time.
[0043]
  In this embodiment, in this second main washing step, only the cleaning means 3 is operated without heating the washing water, so that the amount of power consumed in the main washing step is as much as the heating means 35 does not operate. It can be further reduced and energy can be saved.
[0044]
  In addition, since the heating means 35 only needs to have a heating capacity with the first water supply amount in the heating rinsing step, the power consumption can be reduced. For this reason, since the power consumption of the entire device can be reduced, it can be operated simultaneously with other devices at a general household power outlet, and the device can be easily used as a home device.
[0045]
  In the second embodiment, the operation is performed on the assumption that the cleaning water supplied by the water supply means 32 is high only in the first water supply amount in the main cleaning process. Of course, if the water supply means 32 is connected to the hot water supply device and high temperature washing water can be obtained continuously, the temperature after the second main washing step becomes higher than the first washing temperature shown in FIG. Further, in such a case, it is needless to say that the heating means 35 including the heating rinse may be low output or duty controlled with a high output.
[0046]
  In addition, although the above-mentioned 1st washing | cleaning temperature is set to about 57 degreeC, when it sees from the kind and the amount of the fats and oils which actually adhered to the to-be-washed object, what may be set at about 40-55 degreeC It is. Further, the washing temperature for the heat rinsing, that is, the second washing temperature is set to about 65 ° C. as in the conventional example, but this may be set to a low temperature to slightly increase the operation time of the drying process. This is the same as in the first embodiment.
[0047]
  (Example 3)
  The basic configuration of this embodiment is the same as that of the first embodiment, and a description of the basic configuration is omitted. In the third embodiment, as shown in FIG. 5, a tableware amount detecting means 10 for detecting the amount of the object to be cleaned is provided on the support portion of the tableware basket 30, and the control device 15 is provided with the tableware amount detecting means 10. 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 process are increased or decreased in conjunction with the tableware amount detection signal.
[0048]
  In the present embodiment, at the start of the main washing process, the tableware amount detecting means 10 for detecting the amount of the object to be cleaned detects a change in the weight of the tableware basket 30. The control device 15 estimates the weight of the tableware stored in the tableware basket 30 based on the tableware amount detection signal from the tableware amount detection means 10, that is, the amount thereof. The tableware amount detecting means 10 of the present embodiment has a piezoelectric element and detects the weight of the tableware by generating a voltage according to the weight of the tableware basket 30, that is, the object to be cleaned.
[0049]
  When a large amount of objects to be cleaned is stored, the control device 16 performs control so that the first water supply amount and the second water supply amount are increased in the main cleaning process. This is because when the amount of objects to be cleaned is large, a tableware in which the injection cleaning water does not collide directly, that is, a tableware having a low cleaning effect, is produced. 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 power of the jet water of the cleaning means 3 and obtain a predetermined cleaning power regardless of the amount of objects to be cleaned. .
[0050]
  In particular, FIGS. 6 and 7 show a cleaning temperature chart, a water supply amount, and an injection pressure when the second water supply amount in the main washing process is increased in the third embodiment. In this case, since the injection pressure and the flow rate are large in the second main washing process, the cleaning power is further increased 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 cleaning temperature at the start of the second main washing process is lower than that in the first embodiment, but since the cleaning effect of the jet water power is higher in the second main washing process, a large amount of objects to be cleaned Even so, a predetermined detergency is obtained.
[0051]
  Needless to say, if the operation is performed in this way when the amount of objects to be cleaned is a standard amount or small, the cleaning power becomes stronger than that of the first embodiment.
[0052]
  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 that of the conventional example, the maximum value of the jet water power is suppressed, noise can be reduced in most time, and a predetermined cleaning power can be obtained.
[0053]
  In this embodiment, the temperature of the wash water supplied is set to about 20 degrees. Moreover, also about the heat | fever rinse, suppression of the power consumption is aimed at by rinsing with the 1st water supply amount.
[0054]
  Example 4
  The basic configuration of this embodiment is the same as that of the first embodiment, and a 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 amount of dirt on the object to be cleaned is provided, and the control device 21 is interlocked with the dirt amount detection signal of the dirt amount detecting means 20. Thus, the first and second water supply amounts in the main washing step are different from those of the first embodiment in terms of increasing and decreasing the first and second water supply amounts.
[0055]
  In this embodiment, the dirt amount detection 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 the tableware stored in the tableware basket 30 due to the change in turbidity of the washing water. Detect the amount of dirt. When there is a large amount of dirt, the control device 21 increases the first water supply amount and the second water supply amount. By increasing the amount of cleaning water to be supplied, it is possible to increase the output of the jet water power of the cleaning means 3 and obtain a predetermined cleaning power regardless of the amount of dirt on the object to be cleaned. For example, if the turbidity of the washing water changes greatly immediately after the start of the main washing process, it is possible to increase the first water supply amount assuming that there is much dirt.
[0056]
  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 detergents. There are many.
[0057]
  That is, as shown in FIGS. 9 and 10, in the main washing process, the amount of washing water added in the second water supply amount is less than those in the other examples 1 to 3. As a result, the decrease in the cleaning temperature when the first water supply amount is changed to the second water supply amount is reduced. While obtaining an appropriate cleaning power, since the cleaning temperature is high when the heating rinsing process is started, it is possible to perform an energy-saving operation without increasing the power consumption.
[0058]
  (Example 5)
  The basic configuration of this embodiment is the same as that of the first embodiment, and a description of the basic configuration is omitted. In the third embodiment, as shown in FIGS. 11 and 12, an operation panel 26 for designating the amount of an object to be cleaned or the amount of dirt is provided, and the control device 25 is based on a command from the operation panel 26. 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 process are increased or decreased.
[0059]
  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 and the second water amount according to the amount of the object to be cleaned and the amount of dirt. Increase water supply. The operation panel 26 has a switch for selecting the amount of tableware, the amount of dirt, and the degree of dirt. In this selection, when the amount of tableware and the amount of dirt are large, the control device 25 increases the first water supply amount and the second water supply amount.
[0060]
  That is, increasing the amount of cleaning water can increase the power of the jet water of the cleaning means 3 and obtain a predetermined cleaning power regardless of the amount of dirt on the object to be cleaned. In addition, in this way, a predetermined cleaning power can be easily obtained with a low-cost configuration in which the operation panel 26 is instructed without providing the tableware amount detection means and the dirt amount detection means. In particular, increasing the second water supply amount in the main washing step can increase the cleaning power of the cleaning means 3 and perform an energy saving operation without increasing the power consumption.
[0061]
  In addition, if it is set as the operation panel 26 which can select the dirt sticking degree like this Example 5, based on the command from this operation panel 26, the control apparatus 25 will be the 1st water supply amount in a main washing process. It is possible to increase or decrease the cleaning time at the second water supply amount.
[0062]
  In other words, if the degree of sticking of the object to be cleaned is designated on the operation panel 26, the control device 25 performs the cleaning time with the first water supply amount or the cleaning time with the second water supply amount depending on the state of the dirt attached. Is to be extended. Extending 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.
[0063]
  Particularly in the main washing process, extending the washing time with the first water supply amount increases the washing power due to the swelling effect on the rice grains even in the case of sticky dirt, and the jet water power of the washing means 3 has a low output. Therefore, during operation, including the rinsing process, the noise is low for many hours. Further, in the main washing process, increasing the second water supply amount can increase the cleaning power due to the jetting collision with the rice grains in the case of sticking dirt, and can perform an energy saving operation without increasing the power consumption.
[0064]
  In each of the above-described 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 process. Of course, it goes without saying that the number of times of rinsing may be increased or decreased in conjunction with the contamination amount detection signal from the contamination amount detection means.
[0065]
  In this way, in the fifth embodiment, the control device 25 estimates the amount of dirt from the input of the operation panel 26, and when the amount of dirt is small, the number of times of rinsing in the rinsing process is reduced for cleaning. Less is. Further, as the number of times of rinsing in the rinsing process is smaller, as shown in FIG. 13, the cleaning temperature when starting the final heating rinsing becomes higher. The time for raising the temperature to the second cleaning temperature by rinsing with heat can be shortened, and the power consumption of the heating means 35 and the cleaning means 3 can be reduced.
[0066]
  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 is needless to say that the driving course can be selected in addition to the standard course.
[0067]
  In each of the above-described embodiments, the control device may execute the same operation method as in the main washing step in the heating rinsing step performed at the end of the rinsing step.
[0068]
  In this operation method, the control device performs the heating rinsing process, and the cleaning water is washed by heating the washing water at a low output with the first supply amount of the washing water while the washing water is heated. After the water reaches the predetermined rinsing temperature, the cleaning water is added up to the second water supply amount with a large amount of cleaning water, and the cleaning water is washed at high power without heating the cleaning water without heating. As a result, the object to be cleaned is finished in a sanitary manner by rinsing with a predetermined high temperature, and the cleaning effect by the spray water power is further enhanced. Moreover, in the heating rinsing process, energy saving operation that does not increase the amount of power consumption can be performed.
[0069]
  In each of the above-described embodiments, the water supply amount and the jet water power of the cleaning means are changed in two stages. However, it may be controlled at a larger number of levels or continuously. It ’s good. Of course, it goes without saying that the heating means is stopped when the amount of water supply is large and the jet water power is set to a high output.
[0070]
  In each of the above-described embodiments, the cleaning nozzle that rotates substantially horizontally is mounted as the cleaning unit. However, the present invention is not limited to this, and a cleaning unit that pressurizes and sprays cleaning water with a pump. If it is good. For example, a combination of a fixed washing nozzle and a rotating tableware basket may be used.
[0071]
  In each of the above-described embodiments, the cleaning process of the standard course is described as starting from the main cleaning process. However, prior to the main cleaning process, a pre-cleaning process for rinsing an object to be cleaned with cleaning water is provided. It may be a thing. Of course, in this case, it is needless to say that detergent introduction means for introducing the detergent may be provided and the detergent may be introduced at the start of the main washing process.
[0072]
  Further, in each of the above-described embodiments, a part of the main washing process supplies the same or a large amount of cleaning water as that of the conventional example, but this is because the size of the device and the amount of objects to be cleaned are stored. Needless to say, it is assumed that they are almost the same. Further, in the rinsing process excluding the heating rinsing, substantially the same effect can be obtained even if the amount of water is increased to be equal to or more than that of the conventional example.
[0073]
【The invention's effect】
  As described above, the invention includes a tableware basket for storing objects to be cleaned, a cleaning tank for storing the tableware basket, a water supply means for supplying cleaning water to the cleaning tank, and a water amount detection means for detecting the amount of cleaning water. Cleaning means for pressurizing the washing water by the washing pump and spraying it from the washing nozzle, a heating means for heating the washing water, a temperature detection means for detecting the temperature of the washing water, and the washing means by controlling the washing means And a tableware amount detecting means for detecting the amount of the object to be cleaned, wherein the control device sets the jet water power of the cleaning means to a low output at the first water supply amount in the main washing step, In addition, the first main washing step of washing while washing water is heated until the first washing temperature is reached by the heating means, and then the washing water is added to the second water supply amount larger than the first water supply amount by the water supply means. And the spray water power of the cleaning means A second main washing step for washing with higher output than the one main washing step is performed, and the first water supply amount and the second water supply amount in the main washing step are increased or decreased by the output of the tableware amount detecting means. Therefore, the amount of power consumed in the main washing process is small, and a predetermined detergency can be obtained in a short time. Further, when a large amount of objects to be cleaned is stored, the amount of cleaning water is increased to increase the power of jet water, and a predetermined cleaning power can be obtained regardless of the amount of objects to be cleaned.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of a dishwasher in Embodiment 1 of the present invention.
FIG. 2 is a time chart showing the cleaning temperature of Example 1
FIG. 3 is a time chart showing the amount of water supplied and the injection pressure of the cleaning nozzle in the first embodiment.
FIG. 4 is a time chart showing the cleaning water temperature of the second embodiment.
FIG. 5 is a cross-sectional view of an essential part of a dishwasher in Embodiment 3 of the present invention.
FIG. 6 is a time chart showing the cleaning temperature of Example 3
FIG. 7 is a time chart showing the amount of water supply and the injection pressure of the cleaning nozzle in Example 3
FIG. 8 is a cross-sectional view of an essential part of a dishwasher in Embodiment 4 of the present invention.
FIG. 9 is a time chart showing the cleaning temperature of Example 4
FIG. 10 is a time chart showing the amount of water supply and the injection pressure of the cleaning nozzle in Example 4
FIG. 11 is a cross-sectional view of an essential part of a dishwasher in Embodiment 5 of the present invention.
FIG. 12 is a front view of the operation panel according to the fifth embodiment.
FIG. 13 is a time chart showing the cleaning temperature when the number of rinses 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 the cleaning temperature of the conventional example.
[Explanation 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 Dirty amount detection means
  30 Tableware basket
  31 Washing tank
  32 Water supply means
  33 Water quantity detection means
  35 Heating means
  36 Temperature detection means

Claims (1)

A dish tub for storing objects to be cleaned, a cleaning tank for storing the dish basket, a water supply means for supplying cleaning water to the cleaning tank, a water amount detecting means for detecting the amount of cleaning water, and a cleaning pump for cleaning water and cleaning means for injecting a pressurized cleaning nozzle, a heating means for heating the washing water, a temperature detecting means for detecting the temperature of the washing water, the control device for executing as main washing factory by controlling the washing hands stage When, a tableware quantity detecting means for detecting the amount of the object to be cleaned, the control device, in the main washing step, the water jet power of the cleaning means with the first water supply amount is set to a low output, and said heating means by a second one washing step of washing with heating washing water until it reaches the first washing temperature, then add the washing water to the second water supply amount larger than the first water supply by the water supply means, the cleaning means leaving the water jet power higher than the one washing step And it executes the first two washing steps of to wash, dishwasher so as to increase or decrease the first water supply and the second water supply amount in this washing process by the output of the tableware amount detecting means.

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