JP2001087203A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wash a small quantity of tableware silently and efficiently and to dry the small quantity of tableware efficiently with a small quantity of steam emission. SOLUTION: By selecting the drive rotation speed of a washing pump according to the quantity of tableware to be washed in washing the tableware, an appropriate quantity of washing water to be sprayed can be obtained even when the quantity of the tableware is small. In addition, by selecting the drive rotation speed of a fan when the tableware is dried, an appropriate air quantity can be obtained even when the quantity of the tableware is small.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for washing dishes,
Alternatively, the present invention relates to a dishwasher that performs washing to drying.

[0002]

2. Description of the Related Art FIG. 14 shows the operation contents of a standard course of a conventional dishwasher for washing and drying dishes. In this case, the process involves washing, rinsing (twice),
Heat rinsing and drying are performed in this order.

In the washing process, water is first supplied by opening a water supply valve. If the water supplied by this water supply is at a normal temperature (for example, water temperature 20 ° C.), the water (wash water) is heated by a heater, and in this state, the wash pump is operated, thereby not shown. The washing water is sprayed from the ejector to wash the dishes. At this time, the washing water contains dissolved detergent added in advance. When the water temperature reaches 60 ° C., the heater is turned off, and after 15 minutes, the heater is temporarily stopped, and then the drain pump is operated to drain the water. After that, the water is drained while the water is being supplied.

In the rinsing process, both the first and second times
By supplying water first and then operating the washing pump, washing water is ejected from an ejector (not shown) as in the above, to rinse off the detergent attached to the dishes. Then, after one minute, the same stop, drainage, temporary stop, water supply, water supply, drainage, temporary stop, and drainage are performed as described above.

In the heating and rinsing step, first, water is supplied, and then the supplied water is heated by a heater. In this state, the cleaning pump is operated to remove the cleaning water from an injector (not shown) as described above. Rinse by spraying to remove detergent attached to tableware. And the water temperature is 70
When the temperature reaches [° C], the heater is turned off, temporarily stopped, and drained.

In the drying process, a drying air (outside air) is introduced from outside the machine by operating a fan, and in this state, the heater is energized at a predetermined ratio (in the illustrated example, for 25 seconds, and then for 35 seconds). By repeating the above-mentioned pattern, the drying air introduced is heated to dry the dishes. Then, when a predetermined time (20 minutes in the illustrated example) has elapsed, the operation is terminated.

In this case, for example, a two-pole induction motor is used as the drive source motor of the cleaning pump, and its rotation speed in each of the washing, rinsing, and heating rinsing steps is as follows.
Numerical value corresponding to the rated amount of tableware (3000 in the example shown)
[Rpm]). Also, the rotation speed of the drive source motor of the fan during the drying process is a numerical value corresponding to the rated amount of tableware (2,500 [rpm] in the illustrated example).
And it was constant.

[0008]

In the case of the prior art described above, the driving rotation speed of the washing pump in each of the washing, rinsing and heating rinsing steps was constant at a value corresponding to the rated amount of tableware. When the amount of
The injection amount of the washing water becomes excessive, and as a result, the amount of the washing water passing between the dishes and directly colliding with the peripheral wall of the washing tank having a large sound increases, and the noise increases. Further, in this case, a large amount of power is wasted to drive the cleaning pump, and efficient operation cannot be performed.

On the other hand, since the driving rotation speed of the fan in the drying process is also constant at a value corresponding to the rated amount of tableware, when the amount of tableware is small, the air volume becomes excessive,
As a result, the amount of steam discharged outside the machine increased, and the walls and ceilings of the room near the portion where the dishwasher was installed were easily condensed. Also, in this case, too much power is consumed unnecessarily for driving the fan, and efficient operation cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and therefore has as its object the first object of the present invention is to provide a dishwasher capable of quietly and efficiently washing small dishes, and secondly. Another object of the present invention is to provide a dishwasher that can be dried efficiently with less drying of the dishes and with reduced steam emission.

[0011]

Means for Solving the Problems In order to achieve the above object, in a dishwasher of the present invention, first, a washing tank and a tableware basket in which dishes are arranged inside the washing tank are arranged. A sprayer for injecting washing water into the dishwasher, and a washing pump for pumping the washing water to the sprayer, and control means for controlling the washing pump. The driving rotation speed of the washing pump when washing the dishes is selected according to the following.

According to this, the driving rotation speed of the washing pump is selected according to the amount of the dish to be washed, and the dish is washed, and the amount of washing water injected when the amount of the dish is small. Is done properly.

In the dishwasher of the present invention, secondly,
In addition to the washing tank, the dish basket, the ejector, the washing pump, and the control means, a weight detection means for detecting the weight of the dish basket is provided.From the detection result of the weight detection means, the control means:
The present invention is characterized in that the drive rotation speed of the washing pump when washing dishes is selected.

According to this, the driving rotation speed of the washing pump is selected according to the weight of the tableware basket, and the tableware is washed. The weight of the tableware basket is reduced by the tableware stored in the tableware basket. After all, it changes according to the amount of dishes, so the driving rotation speed of the washing pump is selected according to the amount of dishes to be washed, and the dishes are washed, and the washing water is sprayed when the quantity of dishes is small. The amount is made properly.

Third, in the dishwasher of the present invention,
In addition to having the washing tank, the ejector, the washing pump, and the control means, the tableware basket is divided into a lower basket and an upper basket, and a weight detecting means for detecting the weight of the upper basket is provided, It is characterized in that the control means selects the driving rotation speed of the washing pump when washing the dishes from the detection result of the weight detecting means.

According to this, the driving rotation speed of the washing pump is selected according to the weight of the upper basket, and the dishes are washed, and the weight of the upper basket is increased not only by the lower basket but also by the upper basket. Since it depends on whether the dishes are stored in the basket or not, after all, the driving rotation speed of the washing pump is selected according to the amount of dishes to be washed, and the dishes are washed, and the amount of dishes is small. The injection amount of the cleaning water at the time is appropriately made.

Fourth, in the dishwasher of the present invention,
In addition to having the above-mentioned washing tank, spraying body, washing pump, and control means, the tableware basket is divided into a lower basket and a detachable upper basket, and a detachment detecting means for detecting the detachment of the upper basket is provided. The control means selects the drive rotation speed of the washing pump when washing the dishes based on the detection result of the attachment / detachment detection means.

According to this, the driving rotation speed of the washing pump is selected according to the attachment / detachment of the upper basket, and the dishes are washed, and the attachment / detachment of the upper basket is performed not only by the lower basket but also by the upper basket. Since it depends on whether or not the basket has been used for storing tableware, after all, the driving rotation speed of the cleaning pump is selected according to the amount of tableware to be washed, and the tableware is washed, and the amount of tableware is reduced. When the amount is small, the injection amount of the cleaning water is properly set.

Fifth, in the dishwasher of the present invention,
In addition to having the above-mentioned washing tank, spraying body, washing pump, and control means, the tableware basket is separately provided with a lower basket and an openable upper basket, and detachable detecting means for detecting opening and closing of the upper basket is provided. The control means selects the drive rotation speed of the washing pump when washing the dishes based on the detection result of the opening / closing detection means.

According to this, the driving rotation speed of the washing pump is selected according to the opening and closing of the upper basket, and the dishes are washed. The opening and closing of the upper basket is performed not only by the lower basket but also by the upper basket. Since it depends on whether or not the basket has been used for storing tableware, after all, the driving rotation speed of the cleaning pump is selected according to the amount of tableware to be washed, and the tableware is washed, and the amount of tableware is reduced. When the amount is small, the injection amount of the cleaning water is properly set.

Sixth, in the dishwasher of the present invention,
The washing tank, the dish basket, washing means for washing the dishes arranged in the dish basket, a fan for introducing dry air into the washing tank, a heater for heating the introduced dry air to dry the dishes, and these washing means , A control means for controlling the fan and the heater, and the control means selects the drive rotation speed of the fan when drying the dish according to the amount of the dish to be washed. .

According to this, the drive rotation speed of the fan is selected in accordance with the amount of tableware to be washed, and the tableware is dried, and the air volume when the amount of tableware is small is made appropriate. .

Seventh, in the dishwasher of the present invention,
In addition to the washing tank, the dish basket, the washing means, the fan, the heater, and the control means, a weight detecting means for detecting the weight of the dish basket is provided. Based on the detection result of the weight detecting means, the control means The drive rotation speed of the fan when performing the above is selected.

According to this, the driving rotation speed of the fan according to the weight of the tableware basket is selected and the tableware is dried, and the weight of the tableware basket is determined by the weight of the tableware stored in the tableware basket. After all, it changes according to the amount, so after all, the driving speed of the fan according to the amount of dishes to be washed is selected,
Tableware is dried, and the air volume when the amount of tableware is small is appropriately set.

Eighth, in the dishwasher of the present invention,
In addition to having the washing tank, the washing means, the fan, the heater, and the control means, the tableware basket is divided into a lower basket and an upper basket, and a weight detecting means for detecting the weight of the upper basket is provided. The control means selects the drive rotation speed of the fan when drying the dishes from the detection result of the weight detection means.

According to this, the driving rotation speed of the fan is selected according to the weight of the upper basket, and the dishes are dried. The weight of the upper basket is not only the lower basket but also the upper basket. It depends on whether the tableware is stored or not,
Eventually, the drive rotation speed of the fan is selected according to the amount of dishes to be washed, and the dishes are dried, so that the amount of air when the amount of dishes is small is appropriately set.

In the dishwasher of the present invention, ninth,
In addition to having a washing tank, a washing means, a fan, a heater, and a control means, the tableware basket is divided into a lower basket and a detachable upper basket, and a weight detecting means for detecting the detachment of the upper basket is provided. The control means selects the drive rotation speed of the fan when drying the dishes from the detection result of the attachment / detachment detection means.

According to this, the driving rotation speed of the fan according to the attachment / detachment of the upper basket is selected, and the dishes are dried, and the attachment / detachment of the upper basket is performed not only by the lower basket but also by the upper basket. Since it changes depending on whether or not it was used for storing tableware, after all, the drive rotation speed of the fan according to the amount of tableware to be washed is selected, and the tableware is dried,
When the amount of tableware is small, the air volume is properly adjusted.

In the dishwasher of the present invention, the tenth
In addition to having a washing tank, a washing means, a fan, a heater, and a control means, a tableware basket is separately provided with a lower basket and an openable upper basket, and a weight detection for detecting opening and closing of the upper basket. Means is provided, and the control means selects the drive rotation speed of the fan when drying the dishes from the detection result of the open / close detection means.

According to this apparatus, the drive rotation speed of the fan according to the opening and closing of the upper car is selected, and the dishes are washed. The opening and closing of the upper car is performed not only by the lower car but also by the upper car. Since it changes depending on whether or not it was used for storing tableware, after all, the drive rotation speed of the fan according to the amount of tableware to be washed is selected, and the tableware is dried,
When the amount of tableware is small, the air volume is properly adjusted.

In the dishwasher of the present invention, the eleventh
In addition, the control means also selects the energization ratio of the heater according to the selected drive rotation speed of the fan when the tableware is dried. According to this, the energization ratio of the heater is selected together with the drive rotation speed of the fan according to the amount of tableware to be washed, and the tableware is dried, and the air volume when the amount of tableware is small is appropriate. And the amount of heat generated by the heater is properly adjusted.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention applied to a built-in dishwasher will be described below with reference to FIGS. First, FIG. 2 shows a kitchen cabinet 1 in which a dishwasher is built in, a lid 4 is provided on a top plate 3 having a sink 2, and an operation panel 5 of the dishwasher is provided in front of the lid 4. And the door 6
It is provided side by side with other doors 7 and drawers 8 of the kitchen cabinet 1.

FIG. 3 shows the kitchen cabinet 1 described above.
1 shows a cleaning machine main body 9 incorporated in the operation panel 5 and the inside of the door 6. The washing tank 10 has an opening 11 for taking in and out tableware on an upper surface, and the opening 11 on the upper surface is water-tightly connected to an opening 12 formed in the top plate 3. In addition, the above-mentioned lid 4 is provided so as to open and close the opening 12 of the top plate 3 and, consequently, the opening 11 of the upper surface of the cleaning tank 10.
It is folded in two from the connecting portion 4b in a mountain fold.

In the cleaning tank 10, a heater 13 is disposed at the bottom, and a fountain arm 14 and a fountain nozzle 15 are disposed above the heater 13.
5, a lower basket 16 is housed in the upper part of the fountain arm 14 so as to be able to be taken in and out from above. I have. The lower basket 16 and the upper basket 17
Is a tableware basket, each of which stores and arranges tableware.

A water supply valve 18 is attached to the back (the right side in FIG. 3) of the cleaning tank 10, and a water supply pipe 19 which is connected to a water supply (not shown) is connected to the water supply valve 18.
Therefore, tap water is supplied from the water supply pipe 19 to the cleaning tank 10 through the water supply valve 18.

A cleaning pump 20 is provided at the outer lower portion of the cleaning tank 10.
And a drain pump 21, which uses a single double-shaft motor (pump motor) 22 as a common drive source. The forward rotation of the pump motor 22 causes the cleaning pump 20 to operate. Then, the drain pump 21 is operated by the reverse rotation. The two pumps 20 and 21 may each have a dedicated pump motor.

In addition, a water storage tank 23 communicating with the inside of the cleaning tank 10 is provided at an outer lower portion of the cleaning tank 10, and a connection pipe 24 for connecting the water storage tank 23 and a suction port of the cleaning pump 20 is provided. Further, a connection pipe 25 for connecting the discharge port of the cleaning pump 20 to the fountain arm 14 and the fountain nozzle 15 is provided. With this configuration, the cleaning pump 20
Sucks water (wash water) in the washing tank 10 supplied by the water supply valve 18 from the water storage tank 23 and sends it to the fountain arm 14 and the fountain nozzle 15 under pressure. The pumped water is ejected from the fountain arm 14 and the fountain nozzle 15, and the fountain arm 14 and the fountain nozzle 15 also rotate by the reaction of the fountain.

In this way, the washing water is evenly sprayed on the dishes in the lower basket 16 and the upper basket 17, and the dishes are washed (washed,
Rinsing) is performed. Therefore, the cleaning pump 20, the fountain arm 14, and the fountain nozzle 15 function as cleaning means. In addition, a temperature sensor 26 is attached to the bottom outer surface of the cleaning tank 10, and the temperature sensor 26 detects the temperature of the cleaning tank 10, and as a result, the air temperature in the cleaning tank 10, and It functions as a temperature detecting means for detecting the temperature of the washing water.

On the other hand, the drainage pump 21 functions as a drainage means for sucking the washing water in the washing tank 10 from the water storage tank 23 through the connection pipe 27 and discharging it through the drainage hose 28. As shown in FIG. 4, the drainage hose 28 is
Up to the top, and then extend downward to drain trap 2
9, a pipe extending to the sink 2 side and connected to a drain pipe for draining outdoors, for example, a drain pipe (not shown) of the sink 2 is provided.

In addition, a fan 30 is provided on the front surface of the cleaning tank 10. The fan 30 introduces drying air (outside air) into the cleaning tank 10 during the drying process, and uses a motor (fan motor) 31 as a driving source. Further, a control device 32 and a water level detection device 33 are provided on the front surface of the cleaning tank 10.
Is also arranged. Among them, the control device 32 is mainly composed of a microcomputer, and as described later, the opening and closing of the water supply valve 18, the operation of the cleaning pump 20, the operation of the drainage pump 21, the heat generation of the heater 13, the operation of the fan 30, and the like. , And functions as control means for controlling the overall operation of the dishwasher.

On the other hand, the water level detecting device 33 is
4, a normal water level detection mechanism 35 and an abnormal water level detection mechanism 36
The water storage case 34 has a bottom portion connected to the water storage tank 23 of the washing tank 10 by a connection pipe 37 shown in FIG.
Communicates with the bottom of the Thereby, the same water level as that in the cleaning tank 10 is stored in the water storage case 34. With this configuration, the normal water level detection mechanism 35 detects the normal specified water level in the cleaning tank 10, The abnormal water level detecting mechanism 36 detects an abnormally high water level in the cleaning tank 10.

FIGS. 3 and 4 show the cleaning tank 10.
Shows a water receiver 38 attached to the lower part of the washing tank 10 so as to cover the washing pump 20 and the drainage pump 21 disposed at the outer lower part of the tank, and has a flange part 38a at the front part. The water level detection device 33 is located above the flange portion 38a.

FIG. 3 and FIG. 4 also show legs 39 and jacks 40 provided on the outer and lower surfaces of the water receiver 38. When the washing machine body 9 is assembled to the kitchen cabinet 1, The washing machine body 9 is pushed up by the jack 40 from the state of being supported by the legs 39, and
The opening 11 on the upper surface of the top plate 3 is coupled to the opening 12 of the top plate 3. Further, FIG. 3 shows a fan 30 (see FIG. 4).
And the cleaning tank 1 covering the control device 32 and the water level detection device 33.
0 shows a cover 41 attached to the front of the vehicle.

FIG. 5 shows the operation panel 5 in detail. The operation panel 5 has an "ON" switch 42 for turning on the power and an "OFF" switch for turning off the power. Switch 43 for starting or temporarily stopping the operation, and "drying" for setting a drying time.
It has a switch 45, a "course" switch 46 for setting a course of operation, and a "dishware" switch 47 for setting the amount of dishes to be washed, and a power-on indicator lamp 48. , Set drying time display lamps 49, 50, set course display lamps 51, 5
2 and 53, and set dish quantity display lamps 54 and 55.

In this embodiment, the drying time is "20
Minutes, or 60 minutes, and the driving course can be set to one of the standard, careful, and pre-washing. The amount can be set to either "large" or "small".

FIG. 6 shows an electrical configuration centered on the control device 32. The control device 32 is connected to a switch input section 56 composed of the switches 42 to 47 of the operation panel 5 by a switch. When a signal is input, a water level detection signal is input from the water level detection device 38 (normal water level detection mechanism 35, abnormal water level detection mechanism 36), and a lid switch 57 provided to detect opening and closing of the lid 4 opens and closes. A detection signal is input, and a temperature detection signal is input from the temperature sensor 26.

Based on these inputs and the control program stored in advance, the control device 32
A drive control signal is provided to an inverter circuit 58 that drives the pump motor 22 and the fan motor 31. Here, the pump motor 22 and the fan motor 31
Are composed of, for example, a DC brushless motor, and the control device 32
The rotation speed and rotation direction of the pump motor 22 are controlled, and the rotation speed of the fan motor 31 is controlled.

In addition, the control device 32 includes a display section 59 composed of display lamps 48 to 55 of the operation panel 5 and a buzzer 6 functioning as an end notification means and an abnormality notification means.
0, a drive control signal is given to a drive circuit 61 for operating the water supply valve 18 and the heater 13.

Next, the operation of the above configuration will be described. FIG. 1 shows the contents of the “standard” driving course. When executing this “standard” course, the user first turns on the power by operating the “on” switch 42 of the power supply, The tableware is stored and arranged in a tableware basket (lower basket 16, upper basket 17), detergent is supplied, and the lid 4 is closed. In addition, the "tableware" switch 4 changes the amount of tableware according to the amount of stored tableware.
7 is set to either “more” or “less”, and the “dry” switch 45 is set to “20 minutes” or “60 minutes”.
One of the drying times of “minutes” is set, and the “start / pause” switch 44 is operated.

Then, the control device 47 sequentially executes the steps of washing, rinsing (twice), heating rinsing, and drying. In the washing process, first, the water supply valve 18 is opened to supply water to a normal specified water level. If the water supplied by this water supply is at a normal temperature (for example, a water temperature of 20 ° C.), the water (wash water) is then heated by the heater 13, and in this state,
By operating the cleaning pump 20, cleaning water is sprayed from a spraying body (not shown) to wash the dishes to remove dirt. At this time, if the amount of tableware to be washed is set to “large”, the washing pump 20 is, for example, 3000 [rpm] as indicated by a solid line in the column of “pump rotation speed” in FIG.
High drive rotation speed is selected and operated, and "less"
Is set to 2 as shown by the broken line in the same column.
A low drive speed of 000 [rpm] is selected and activated.

When the water temperature reaches 60 ° C., the heater 13 is turned off. When 15 minutes have passed, the heater 13 is temporarily stopped, and then the drain pump 21 is operated for, for example, 40 seconds to drain the drain water. Then, stop once, supply water for 5 [seconds], and then supply and drain water while supplying water for 10 seconds.
Go for [sec], stop temporarily, and drain for 10 [sec].

At the time of each drainage, the drainage pump 21 is designed to keep the drainage power short, even if the amount of dishes to be washed is set to “large” or “small”, for example, by 30 minutes.
A high drive rotation speed of 00 [rpm] is selected and operated (the same applies hereinafter).

In the rinsing process, the first time and the second time
First, water is supplied to a normal specified water level, and then the washing pump 20 is operated, so that washing water is ejected from an ejector (not shown) as described above to rinse off the detergent attached to the dishes. Also at this time, if the amount of tableware to be washed is set to "large", the washing pump 20 is operated by selecting a high drive rotation speed of, for example, 3000 [rpm] and set to "small". For example, 20
A low drive rotational speed of 00 [rpm] is selected and operated. Then, after one minute, the same stop, drainage, temporary stop, water supply, water supply, drainage, temporary stop, and drainage are performed as described above.

In the heating and rinsing step, first, water is supplied to a normal specified water level, and then the supplied water is supplied to the heater 13.
By operating the washing pump 20 in this state, the washing water is ejected from an ejector (not shown) as in the above, and the detergent attached to the tableware is dropped and rinsed. At this time as well, if the amount of tableware to be washed is set to “large”, the washing pump 20 is set to, for example, 3000 [r
pm] is selected and operated, and if "low" is set, for example, 2000 [rpm]
Is selected and operated. And
When the water temperature reaches 70 ° C., the heater 13 is turned off, temporarily stopped, and drained for 40 seconds.

In the drying step, drying air is introduced from outside the machine by operating the fan 30, and in this state, the heater 13 is energized for a predetermined ratio (for 25 seconds in the illustrated example, and then cut off for 35 seconds). (A pattern in which is repeated) to dry the tableware by heating the introduced drying air. At this time, if the amount of tableware to be washed is set to "large", the fan 30 is set to the "fan rotation speed" in FIG.
, A high drive rotation speed of, for example, 2500 [rpm] is selected and operated, and if it is set to "low", for example, as shown by a broken line in the same column, for example, 150 rpm
A low drive rotational speed of 0 [rpm] is selected and operated. Then, when the set time (20 minutes in the illustrated example) has elapsed, the operation is terminated.

As described above, according to the present configuration, the tableware is washed by selecting the driving rotation speed of the washing pump 20 according to the amount of tableware to be washed. When the amount of tableware is small, the washing pump is used. By selecting a low drive rotation speed of 20, the injection amount of the washing water is appropriately set without being excessive as in the conventional case. Therefore, the amount of washing water passing between the dishes and directly colliding with the peripheral wall of the washing tank 10 is reduced, and noise can be reduced. or,
In this case, it is not necessary to wastefully consume a large amount of power to drive the cleaning pump 20, so that efficient operation can be performed.

In addition, in the case of this configuration, the fan 30
The drive rotation speed is also selected according to the amount of dishes to be washed.
The dish is dried, and when the amount of the dish is small, by selecting a low driving rotation speed of the fan 30, the air volume is appropriately adjusted without being excessive as in the conventional case. Therefore, the amount of steam discharged outside the apparatus can be reduced, and the wall and ceiling of the room near the portion where the dishwasher is installed can be prevented from forming dew. Also in this case, the fan 3
Since unnecessary power is not consumed for driving 0, efficient operation can be performed.

FIGS. 7 to 13 show the second to sixth embodiments of the present invention.
The same parts as those in the embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described.

[Second Embodiment] In the second embodiment shown in FIGS. 7 and 8, a step 71 is formed around the lower part of the cleaning tank 10, and the step 71 is used for the tableware basket, especially the lower basket 16. I try to support. In addition, a weight sensor 72 functioning as a weight detecting means is provided on the outer and lower surfaces of the step portion 71, and the weight sensor 72 detects the weight of the tableware basket.
In this case, the weight of the lower car 16 is detected. Further, in this case, the control device 32 uses the detection result of the weight sensor 72 instead of the result of setting the amount of dish by the “dishware” switch 47 described above, and the driving rotation speed of the washing pump 20 when washing the dish, In addition, the driving rotation speed of the fan 30 when drying the dishes is selected.

FIG. 8 illustrates this concretely. After the operation is started (started), the control device 32 detects the weight by the weight sensor 72 (step S1), and then the detected weight is It is determined whether or not it is a predetermined value, for example, 1 kg or more (step S2).

Here, the weight of the lower basket 16 detected by the weight sensor 72 changes according to the amount of tableware stored in the lower basket 16. If many dishes are stored in the lower basket 16, The weight of the lower basket 16 increases to be 1 kg or more as described above, and if a small amount of tableware is stored in the lower basket 16, the weight of the lower basket 16 is reduced to 1 kg or less as described above.

The control device 32 determines that 1 kg
If it is determined that this is the case (YES), the driving rotation speed of the cleaning pump 20 in the washing step, the rinsing step, and the heating rinsing step is selected to a high value of, for example, 3000 [rpm], and the driving of the fan 30 in the drying step is performed. The rotation speed is also set to a high value of, for example, 2500 [rpm] (step S3).

On the other hand, if it is determined in step S2 that the pressure is not more than 1 kg (NO), the driving rotation speed of the cleaning pump 20 in the washing step, the rinsing step, and the heating rinsing step is reduced to a low value of, for example, 2000 rpm. The driving rotation speed of the fan 30 during the drying process is set to, for example, 150
A low value of 0 [rpm] is selected (step S4).

Thereafter, the control device 32 performs the same operation as in the first embodiment, and steps S5 to S28 in FIG. 8 show the operation in the above-described washing process. At the time of washing in this washing step (steps S8 to S12), at the time of rinsing at an unillustrated rinsing step, and at the time of rinsing at an unillustrated heating rinsing step, respectively,
Are operated at the above-mentioned selected drive rotational speed. Further, at the time of drying in the drying process, the fan 30 is operated at the above-mentioned selected drive rotation speed.

In this case, the driving rotation speed of the washing pump 20 is selected according to the weight of the tableware basket.
Since the dishes are washed, the weight of the dish basket changes according to the amount of the dishes stored in the dish basket as described above. Therefore, the driving of the washing pump 20 according to the amount of the dishes to be washed is eventually performed. The rotating speed is selected, and the dishes are washed, and the same effects as in the first embodiment can be obtained.

In this case, the tableware is also dried by selecting the driving rotation speed of the fan 30 in accordance with the weight of the tableware basket, and the weight of the tableware basket is set to the tableware basket as described above. Since it changes according to the amount of stored tableware, the drive rotation speed of the fan 30 is eventually selected according to the amount of tableware to be washed, and the tableware is dried, and the same effect as in the first embodiment is obtained. Obtainable.

[Third Embodiment] In the third embodiment shown in FIG. 9, a weight sensor 81 having a hook receiving portion 81a is provided above the cleaning tank 10, and the hook receiving portion 81a is provided.
The weight sensor 81 functions as a weight detection unit that detects the weight of the upper car 17 by hooking and holding the hook portion 82 of the upper car 17. Further, in this case, the control device 32 replaces the setting result of the tableware amount by the “tableware” switch 47 described above, and
Based on the detection result of 1, the drive rotation speed of the cleaning pump 20 when washing the dishes and the drive rotation speed of the fan 30 when drying the dishes are selected.

Specifically, as in the second embodiment, the weight is detected by the weight sensor 81 immediately after the start of the operation, and then it is determined whether or not the detected weight is a predetermined value or more. Here, the weight of the upper basket 17 detected by the weight sensor 81 changes depending on whether or not the tableware is stored in the upper basket 17. If the tableware is stored in the upper basket 17, the weight of the upper basket 17 is determined. Is not less than a predetermined value, and if not stored, the weight of the upper car 17 does not become more than the predetermined value.

If the weight of the basket 17 detected by the weight sensor 81 is determined to be equal to or greater than the predetermined value, the control device 32 determines the driving rotation speed of the cleaning pump 20 in the washing step, the rinsing step, and the heating rinsing step. For example, 3000 [r
pm] and the fan 30 in the drying process.
Is also set to a high value of, for example, 2500 [rpm].

On the other hand, the upper car 1 detected by the weight sensor 81
If it is determined that the weight of the cleaning pump 7 is not equal to or more than the predetermined value, the drive rotation speed of the washing pump 20 in the washing step, the rinsing step, and the heating rinsing step is selected to a low value of, for example, 2000 [rpm] and the fan in the drying step is selected. The drive rotation speed 30 is also set to a low value of, for example, 1500 [rpm].

The washing pump 20 is operated at the above-mentioned selected drive rotational speed during the washing process, the rinsing process in the rinsing process, and the rinsing process in the heating rinsing process. When drying, fan 3
0 is activated at the drive rotational speed selected above.

In such a configuration, the driving rotation speed of the washing pump 20 is selected according to the weight of the upper basket 17, and the dishes are washed.
Is changed depending on whether or not the dishes are stored not only in the lower basket 16 but also in the upper basket 17, so that the driving rotation speed of the washing pump 20 is selected according to the amount of the dishes to be washed. Since the cleaning is performed, the same effect as in the first embodiment can be obtained.

In this case, the dishes are also dried in the upper basket 17.
The driving rotation speed of the fan 30 according to the weight of the fan 30 is selected, and the weight of the upper car 17 depends on whether the tableware is stored not only in the lower car 16 but also in the upper car 17 as described above. In the end, the drive rotation speed of the fan 30 is selected according to the amount of dishes to be washed, and the dishes are dried, and the same effect as in the first embodiment can be obtained.

[Fourth Embodiment] In the fourth embodiment shown in FIGS. 10 and 11, a plurality of hook receiving portions 91 are provided on the upper portion of the cleaning tank 10, and the hooks of the upper basket 17 are provided on these hook receiving portions 91. The hook 92 is hooked and detachably held, and a hook switch 91 is provided with a reed switch 93 (see FIG. 11), and the hook 92 hooked on the hook 92 is provided with a magnet 94.

In this case, when the hook portion 92 is hooked on the hook receiving portion 91 to hold the upper car 17, the magnet 94 comes close to the reed switch 93, so that the reed switch 93 operates. Conversely, hook receiving part 9
If the hook portion 92 is removed from the upper car 17 and the upper car 17 is removed, the magnet 94 separates from the reed switch 93, and the reed switch 93 returns to the non-operating state. It functions as attachment / detachment detection means for detecting the attachment / detachment of the device.

Further, in this case, the control device 32 drives the cleaning pump 20 when cleaning the dishes based on the detection result of the reed switch 93 instead of the result of setting the amount of dishes by the “dishware” switch 47 described above. The rotation speed and the drive rotation speed of the fan 30 when drying the dishes are selected.

More specifically, immediately after the start of the operation, the attachment / detachment of the upper car 17 is detected by the reed switch 93, and then it is determined from the detected result whether or not the upper car 17 is mounted. Here, the attachment / detachment of the upper basket 17 depends on whether not only the lower basket 16 but also the upper basket 17 has been used for storing tableware. If the upper basket 17 has been used for storing tableware, the upper basket 17 is used. 17 is mounted, and if not used, the upper car 17 is not mounted.

If it is determined from the result of the detection by the reed switch 93 that the upper car 17 is mounted, the control device 32 changes the driving rotation speed of the cleaning pump 20 in the washing step, the rinsing step, and the heating rinsing step. For example, 3000
[Rpm] is selected to be a high value, and the drive rotation speed of the fan 30 in the drying process is also selected to be a high value of, for example, 2500 [rpm].

On the other hand, if it is determined that the upper basket 17 is not mounted, the driving rotation speed of the washing pump 20 in the washing step, the rinsing step, and the heating rinsing step is set to, for example, 20.
00 [rpm], and the drive rotation speed of the fan 30 during the drying process is also set to a low value, for example, 1500 [rpm].

At the time of washing in the washing step, rinsing in the rinsing step, and rinsing in the heating rinsing step, the washing pump 20 is operated at the above-mentioned selected drive rotation speed, and the drying step is performed. When drying, fan 3
0 is activated at the drive rotational speed selected above.

In this way, the driving rotation speed of the washing pump 20 according to the attachment / detachment of the upper basket 17 is selected, and the dishes are washed.
Since the attachment / detachment changes depending on whether the tableware is used not only for the lower basket 16 but also for the upper basket 17, the driving rotation speed of the washing pump 20 is selected according to the amount of the dish to be washed, Since the dishes are washed, the same effects as in the first embodiment can be obtained.

In this case, the dishes are also dried in the upper basket 17.
The drive rotation speed of the fan 30 according to the attachment / detachment of the fan 30 is selected and performed, and the attachment / detachment of the upper basket 17 is performed not only for the lower basket 16 but also for the upper basket 17 as described above. After all, the driving rotation speed of the fan 30 is selected according to the amount of dishes to be washed,
The dishes are dried, and the same effects as in the first embodiment can be obtained.

[Fifth Embodiment] In a fifth embodiment shown in FIG. 12, a fixing portion 17a mainly having a side portion for fixing the upper basket 17 to the upper portion of the washing tank 10 and a bottom portion on which tableware is placed are mainly formed. The movable portion 17b is configured to be openable and closable by rotation about the shaft portion 17c (see arrow A), and the open position is held by the stopper 17d.
A reed switch 101 is provided near one stopper 17d of the fixed portion 17a, and a magnet 102 is provided at a portion of the movable portion 17b locked by the stopper 17d.

In this case, when the movable portion 17b is opened and locked by the stopper 17d, the magnet 102 approaches the reed switch 101, so that the reed switch 101 operates. Conversely, when the movable part 17b is separated from the stopper 17d and closed, the reed switch 101
When the magnet 102 is separated from the reed switch 101, the reed switch 101 returns to the non-operation state.
The reed switch 101 functions as opening / closing detecting means for detecting opening / closing of the upper car 17.

Further, in this case, the control device 32
Instead of the result of setting the amount of dishes by the “dishware” switch 47 described above, the driving rotation speed of the washing pump 20 when washing dishes and the fan 30 when drying dishes are based on the detection result of the reed switch 101. The drive rotation speed is selected.

More specifically, immediately after the start of operation, opening / closing of the upper car 17 is detected by the reed switch 101, and then, based on the detection result, it is determined whether or not the upper car 17 is open. Here, the opening and closing of the upper basket 17 depends on whether or not not only the lower basket 16 but also the upper basket 17 has been used for storing tableware. If the upper basket 17 has been used for storing tableware, the upper basket is used. 17 is open, and if not used, the upper car 17 is not open.

If it is determined from the result of the detection by the reed switch 101 that the upper car 17 is in the open state, the control device 32 changes the driving rotation speed of the cleaning pump 20 in the washing step, the rinsing step, and the heating rinsing step. For example, 3000
[Rpm] is selected to be a high value, and the drive rotation speed of the fan 30 in the drying process is also selected to be a high value of, for example, 2500 [rpm].

On the other hand, if it is determined that the upper basket 17 is not in the open state, the driving rotation speed of the washing pump 20 in the washing step, the rinsing step, and the heating rinsing step is set to, for example, 2000.
[Rpm], and the driving rotation speed of the fan 30 in the drying process is also set to a low value of, for example, 1500 [rpm].

The washing pump 20 is operated at the above-mentioned selected drive rotation speed during the washing step, the rinsing step in the rinsing step, and the rinsing step in the heating rinsing step. When drying, fan 3
0 is activated at the drive rotational speed selected above.

In such a configuration, the driving rotation speed of the cleaning pump 20 according to the opening and closing of the upper basket 17 is selected, and the dishes are washed.
The opening and closing of the table changes depending on whether the tableware is used for storing not only the lower basket 16 but also the upper basket 17, so that the driving rotation speed of the cleaning pump 20 according to the amount of tableware to be cleaned is selected. Since the dishes are washed, the same effects as in the first embodiment can be obtained.

[0091] In this case, the dishes are also dried in the upper basket 17.
The drive rotation speed of the fan 30 according to the opening / closing of the fan 30 is selected and performed, and the opening / closing of the upper car 17 has been performed not only to the lower car 16 but also to the upper car 17 for storing tableware as described above. After all, the driving rotation speed of the fan 30 is selected according to the amount of dishes to be washed,
The dishes are dried, and the same effects as in the first embodiment can be obtained.

[Sixth Embodiment] In the sixth embodiment shown in FIG. 13, the heater 13 is used in accordance with the above-mentioned selected driving rotation speed of the fan 30 when the dishes are dried.
The current supply ratio is also selected. In particular,
When the fan 30 is rotationally driven by selecting a high drive rotational speed of, for example, 2500 [rpm], the heater 13 is set to 25
While power is supplied in a pattern of repeating power supply for 35 seconds and then disconnecting power for 35 seconds, the fan 30
pm], the heater 13 is energized for 10 seconds and then energized for 50 seconds in a pattern that repeatedly cuts off the power, thereby reducing the energization ratio.

In this way, the energization ratio of the heater 13 is selected together with the drive rotation speed of the fan 30 in accordance with the amount of dishes to be washed, and the dishes are dried. The air volume when the amount is small is made appropriate, and the calorific value of the heater 13 is made appropriate, so that the temperature of the tableware and the tableware basket can be prevented from rising excessively.

The cleaning means is not limited to the one using the above-described spray and the cleaning pump, as long as the drive rotation speed of the fan 30 and the energization ratio of the heater 13 are controlled as described above in the drying process. The washing tank 10 may be configured to store water in such an amount that the tableware is immersed in the washing tank 10 and to stir the water so that the washing is performed with a water flow. In addition, the present invention is not limited to only the embodiments described above and shown in the drawings,
The present invention can be implemented with appropriate changes without departing from the scope.

[0095]

The present invention is as described above.
The following effects are obtained. According to the dishwasher of claim 1,
The drive rotation speed of the washing pump is selected according to the amount of dishes to be washed, and the dishes are washed.When the quantity of dishes is small, the injection amount of the washing water is appropriately set. Dishes of dishes can be done quietly and efficiently.

According to the dishwasher of the second aspect, the driving rotation speed of the washing pump is selected according to the weight of the dish basket, and the dish is washed. Since the cleaning rotation of the cleaning pump according to the amount is selected and the tableware is cleaned, a small amount of tableware can be cleaned quietly and efficiently.

According to the dishwasher of the third aspect, the driving rotation speed of the washing pump is selected according to the weight of the upper basket,
The dishes are to be washed, and the driving rotation speed of the washing pump is substantially selected according to the amount of the dishes to be washed, so that the dishes are washed. Quiet, efficient.

According to the dishwasher of the fourth aspect, the driving rotation speed of the washing pump according to the attachment / detachment of the upper basket is selected.
The dishes are to be washed, and the driving rotation speed of the washing pump is substantially selected according to the amount of the dishes to be washed, so that the dishes are washed. Quiet, efficient.

According to the dishwasher of the fifth aspect, the driving rotation speed of the washing pump according to the opening and closing of the upper basket is selected,
The dishes are to be washed, and the driving rotation speed of the washing pump is substantially selected according to the amount of the dishes to be washed, so that the dishes are washed. Quiet, efficient.

According to the dishwasher of the sixth aspect, the driving rotation speed of the fan according to the amount of the dish to be washed is selected,
Since the tableware is dried and the air volume when the amount of the tableware is small is appropriately set, the drying of the small tableware can be efficiently performed with a small amount of steam discharged.

According to the dishwasher of the present invention, the drive rotation speed of the fan is selected in accordance with the weight of the dish basket, and the dishes are dried. The tableware is dried by selecting the drive rotation speed of the fan according to the above, so that a small amount of tableware can be dried efficiently with a reduced amount of steam discharged.

According to the dishwasher of the present invention, the drive rotation speed of the fan is selected according to the weight of the upper basket, and the dishes are dried, and the amount of dishes to be washed is substantially reduced. The tableware is dried by selecting the drive rotation speed of the fan according to the above, so that a small amount of tableware can be dried efficiently with a reduced amount of steam discharged.

According to the dishwasher of the ninth aspect, the drive rotation speed of the fan according to the attachment / detachment of the upper basket is selected and the dishes are dried, and the amount of dishes to be washed is substantially reduced. The tableware is dried by selecting the drive rotation speed of the fan according to the above, so that a small amount of tableware can be dried efficiently with a reduced amount of steam discharged.

According to the dishwasher of the tenth aspect, the drive rotation speed of the fan according to the opening and closing of the upper basket is selected, and the dishes are dried, and the amount of dishes to be washed is substantially reduced. The tableware is dried by selecting the drive rotation speed of the fan according to the above, so that a small amount of tableware can be dried efficiently with a reduced amount of steam discharged.

According to the dishwasher of the eleventh aspect, the energization ratio of the heater is selected together with the drive rotation speed of the fan according to the amount of the dish to be washed, and the dish is dried. When the air volume is small, the air volume is properly set, and the heating value of the heater is also set properly, so that the temperature of the tableware and the tableware basket can be prevented from rising excessively.

[Brief description of the drawings]

FIG. 1 is a time chart showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a kitchen cabinet with a built-in dishwasher.

FIG. 3 is a longitudinal side view of a portion where a dishwasher of a kitchen cabinet is built in.

FIG. 4 is a longitudinal sectional front view of the same part.

FIG. 5 is an enlarged front view of an operation panel.

FIG. 6 is a block diagram of an electrical configuration.

FIG. 7 is an enlarged longitudinal sectional front view of a main part showing a second embodiment of the present invention.

FIG. 8 is a flowchart of a washing process.

FIG. 9 is a view corresponding to FIG. 7, showing a third embodiment of the present invention.

FIG. 10 is an enlarged perspective view of a main part showing a fourth embodiment of the present invention.

FIG. 11 is an enlarged perspective view of a portion for detecting attachment / detachment of the upper car.

FIG. 12 is an enlarged perspective view of an upper car showing a fifth embodiment of the present invention.

FIG. 13 is a view corresponding to FIG. 1, showing a sixth embodiment of the present invention.

FIG. 14 is a diagram corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

10 is a washing tank, 13 is a heater, 14 is a fountain arm (jet body, washing means), 15 is a fountain nozzle (jet body, washing means), 16 is a lower basket (tableware basket), and 17 is an upper basket (tableware basket). , 20 is a washing pump (washing means), 22 is a pump motor, 30 is a fan, 31 is a fan motor, 32 is a control device (control means), 47 is a "dishware" switch (dishware amount setting means), and 72 and 81 are A weight sensor (weight detection means), 93 is a reed switch (removal detection means), 94 is a magnet, 101 is a reed switch (open / close detection means), and 102 is a magnet.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenji Yoshida 991 Anada-cho, Seto-shi, Aichi F-term in Aichi Factory, Toshiba Corporation (reference) 3B082 DB00 DC04

Claims (11)

[Claims] 1. A washing tank, a tableware in which dishes are arranged inside the washing tank, an injector for ejecting washing water to wash the arranged dishes and washing, and the cleaning water being pumped to the injector. A washing pump, and control means for controlling the washing pump, wherein the control means selects the driving rotation speed of the washing pump when washing the dish according to the amount of dish to be washed. Dishwasher characterized by the following. 2. A washing tank, a tableware having dishes arranged inside the washing tank, an injector for ejecting washing water to wash the arranged dishes, and pumping the washing water to the injector. A washing pump; control means for controlling the washing pump; and weight detecting means for detecting the weight of the tableware basket. The control means performs washing of the tableware based on the detection result of the weight detecting means. A dishwasher, wherein a driving rotation speed of the washing pump at the time is selected. 3. A washing tank, a tableware arranged in a lower basket and an upper basket in which dishes are arranged inside the washing tank, and an injector for spraying washing water onto the arranged tableware to wash the dishes. A washing pump for pressure-feeding the washing water to the injector; a control means for controlling the washing pump; and a weight detecting means for detecting the weight of the upper basket. From the detection result of the weight detecting means, The dishwasher according to claim 1, wherein the control means selects a driving rotation speed of the washing pump when the dishwashing is performed. 4. A washing tub and tableware arranged in a lower basket and a detachable upper basket in which dishes are arranged inside the washing tank, and washing water is sprayed onto the arranged dishes to wash the dishes. An ejector, a washing pump for pressure-feeding the washing water to the ejector, control means for controlling the washing pump, and attachment / detachment detection means for detecting attachment / detachment of the upper basket,
The dishwasher according to claim 1, wherein the control means selects a driving rotation speed of the washing pump when the dishwashing is performed based on a detection result of the detachment detecting means. 5. A washing tank and tableware arranged in a lower basket and an openable upper basket in which dishes are arranged inside the washing tank, and washing water is sprayed on the arranged tableware to wash the dishes. An injection body, a cleaning pump for pumping the cleaning water to the injection body, control means for controlling the cleaning pump, and open / close detection means for detecting opening and closing of the upper basket,
The dishwasher according to claim 1, wherein the control means selects a driving rotation speed of the washing pump when the dish is washed, based on a detection result of the opening / closing detecting means. 6. A washing tank, a tableware for arranging dishes in the washing tank, a washing means for washing the arranged dishes, and a fan for introducing dry air into the washing tank. A heater for heating the drying air to dry the dishes, and a control means for controlling the washing means, the fan, and the heater. The control means performs the drying of the dishes according to the amount of the dishes to be washed. A dishwasher characterized by selecting a drive rotation speed of the fan at the time. 7. A washing tank, a tableware for arranging tableware inside the washing tank, a washing means for washing the arranged tableware, and a fan for introducing dry air into the washing tank. A heater that heats the drying air to dry the tableware, a control unit that controls the cleaning unit, the fan, and the heater; and a weight detection unit that detects the weight of the tableware basket. The dishwasher according to claim 1, wherein the control means selects a driving rotation speed of the fan when the dish is dried based on a result. 8. A washing tank, tableware arranged in a lower basket and an upper basket, in which dishes are arranged in the washing tank, washing means for washing the arranged dishes, and inside the washing tank. A fan for introducing the drying air into the heater, a heater for heating the introduced drying air to dry the tableware, a control unit for controlling the washing unit, the fan, and the heater; and a weight detecting unit for detecting the weight of the upper basket. A dishwasher, wherein the control means selects a drive rotation speed of the fan when the dish is dried based on a detection result of the weight detection means. 9. A washing tank, tableware arranged in a lower basket and a detachable upper basket in which dishes are arranged in the washing tank, washing means for cleaning the arranged tableware, A fan for introducing drying air into the washing tank; a heater for heating the introduced drying air to dry the tableware; a control unit for controlling the washing unit, the fan, and the heater; and detecting attachment / detachment of the upper basket. A dishwasher, comprising: a detachment detection unit, wherein the control unit selects a drive rotation speed of the fan when the tableware is dried based on a detection result of the detachment detection unit. . 10. A washing tank, tableware arranged in a lower basket and an openable upper basket in which dishes are arranged in the washing tank, washing means for washing the arranged dishes, A fan for introducing drying air into the washing tank; a heater for heating the introduced drying air to dry the dishes; a control means for controlling these washing means, the fan and the heater; and detecting opening and closing of the upper basket. Opening and closing detection means,
The dishwasher according to claim 1, wherein the control means selects a driving rotation speed of the fan when the dish is dried based on a detection result of the opening / closing detection means. 11. The method according to claim 6, wherein the control means also selects the energization ratio of the heater in accordance with the selected driving speed of the fan when drying the dishes. The dishwasher as described.