JPH11178777A - Dish washer and drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve drying performance and to equalize the temp. of the inside of a washing tub by allowing the first heater to generate heat at the time of driving a washing pump i the last rinsing process and allowing the second heater to generate heat at the time of driving a blowing pump on drying process. SOLUTION: In a fourth rinsing process, a washing heater 5 generates heat at the time of starting the washing pump to rinse the dishes with hot washing water. When the fourth rinsing process is finished, a load driving circuit 11 drives a drain pump 6 to discharge the washing water within a washing tub to the outside of a main body through a drain hose. Then, when the washing runs out, the driving of the pump 6 is stopped to finish drain processing. After then, a drying heater 12 generates heat at the time of driving the blowing motor 8 to feed hot air into the washing tub to start drying the dishes, At the time of reaching a drying time, the motor 8 and the heater 12 through the circuit 11 to finish the drying process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher / dryer for washing dishes by spraying washing water onto dishes stored in a washing tank.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view of a conventional dishwasher and dryer.
FIG. 7 is an explanatory diagram of an operation process of a conventional dishwasher / dryer. In the drawing, reference numeral 1 denotes a cleaning tank, 1a denotes a water storage tank formed in a concave shape at a lower portion of the cleaning tank 1, 1b denotes an air vent opening below a side wall of the cleaning tank 1, and 2 denotes water supply to the cleaning tank 1. A water supply valve 3 absorbs water supplied from the washing tank 1 and jets water to the upper tableware through an injection nozzle 4.
Is a heater installed on the bottom side of the washing tank 1 for heating the washing water, 6 is a drain pump for draining the washing water in the water storage tank 1a,
7 is a drainage hose for draining the washing water absorbed by the drainage pump 6 to the outside of the main body, 8 is a blower motor for sucking outside air and blowing into the washing tank 1 through the blower opening 1b, 9 is a water supply valve 2, and a washing pump. 3, a control device that drives and controls the heater 5, the drain pump 6, the blower motor 8, and the like.

The steps of washing, rinsing and drying in the conventional dish washer / dryer constructed as described above will be described with reference to FIG. When a start button (not shown) connected to the control device 9 is turned on, first, the water supply valve 2 is opened to supply water to the cleaning tank 1. When the water in the cleaning tank 1 reaches a specified position by this water supply, the water supply valve 2 is closed, the cleaning pump 3 is driven, and the heater 5 is heated. From the tableware. When this heating cleaning is performed for a predetermined time, the cleaning pump 3 and the heater 5 are turned off, and a first rinsing step is started.

In the first rinsing step, first, a drain pump 6
To drain the high-temperature washing water (about 60 ° C.) in the washing tank 1 through the drain hose 7 to the outside of the main body. Then, the water supply valve 2 is opened and water is supplied in the same manner as in the above-described cleaning step, and then only the cleaning pump 3 is driven to perform rinsing with normal-temperature water for a predetermined time. When the rinsing step is completed, the second rinsing step and the third rinsing step are sequentially performed in the same manner as in the first rinsing step, and the fourth rinsing step is started.

[0005] In the fourth rinsing step, the heater 5 is heated after the drainage and water supply is completed, and the heating rinsing is performed for a predetermined time while heating the water in the cleaning tank 1. When the heating and rinsing is completed, a drying process is started. First, the high-temperature cleaning water in the cleaning tank 1 is drained. After the draining is completed, the heater 5 is heated to heat the air in the cleaning tank 1. The blower motor 7 is driven to blow air into the washing tank 1, and the washed dishes are dried for a predetermined time, thereby completing the entire process of this operation. Note that, depending on the user, a drain hose 7 connected to the drain pump 6 may be used.
Was placed in the sink of the sink, and the washing water in the water storage tank 1a was directly drained into the sink.

[0006]

In the conventional dishwasher / dryer described above, the same heater 5 heats the washing water in the washing step and the air in the washing tank 1 in the drying step. However, heating of the air in the cleaning tank 1 during drying requires a relatively long time, although the efficiency of heating the cleaning water is good.
This is because unevenness in temperature has occurred in the washing tank 1 and the tableware and the inside of the washing tank 1 have become wet due to the rinsing before the drying step, and the drying performance has been reduced.

In the cleaning step, since the surface of the heater 5 is almost at the same temperature as the temperature of the cleaning water, there is no problem even if the tableware made of resin protrudes from the basket and is in contact with the heater 5, but in the drying step. Without water, the surface of the heater is 700 ° C ~
Since the temperature is high at 800 ° C., even if the heat generation of the heater 5 is controlled by intermittent energization, the tableware made of resin is deformed,
Attention was required for the user.

Further, since the washing water is hot in the washing step and the fourth rinsing step, if the water is drained directly into the sink, the user may be inconvenienced by touching the high-temperature water. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to make the temperature in the cleaning tank uniform during the drying step, with or without heating and rinsing in the fourth rinsing step. Improve drying performance and save energy,
Also, it is possible to provide a dishwasher / dryer that enables the user to be alert when discharging high-temperature water, and that does not cause any problem even when resin tableware is in contact with the heater during drying. Aim.

[0010]

According to the present invention, there is provided a dishwashing / drying machine comprising: a washing pump for absorbing water in a supplied washing tank and jetting the same through an injection nozzle to tableware in the washing tank; A first heater for heating the water in the tank,
A blower motor that feeds into the cleaning tank via the blower port, a second heater provided between the blower motor and the blower port,
Before the last rinsing step of a plurality of preset rinsing steps, the washing pump is driven, and in the last rinsing step, the washing pump is driven,
A first control unit for causing the first heater to generate heat; and a driving unit for driving the blower motor during the drying step;
And second control means for causing the heater to generate heat.

The first control means drives only the cleaning pump during the last rinsing step.

The dishwasher of the present invention further comprises a timer, an alarm display unit, and the timer and the alarm display unit for discharging high-temperature water in the washing tank heated by the first heater. And a drain control means for driving a drain pump to drain high-temperature water in the washing tank when the time measured by the timer has passed a preset time.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. FIG. 1 is a block diagram showing the electrical configuration of a dishwasher / dryer according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of the dishwasher / dryer according to Embodiment 1, and FIG. 6 is a flowchart showing the operation of the machine. The same or corresponding parts as in the conventional example described with reference to FIG.

The control device 9 of the first embodiment comprises, for example, a microcomputer 10 (hereinafter, referred to as a "microcomputer 10") and a load driving circuit 11, and the microcomputer 10 has functions of the first and second control means of the present invention. A timer function is provided. For example, in the rinsing process from the first rinsing process to the third rinsing process, the cleaning pump 3
And the cleaning pump 3 is driven via the load driving circuit 11 at the time of rinsing in the last fourth rinsing step, and the cleaning heater 5 as the first heater is heated. The driving of the motor 8 and the heat generation of the drying heater 12 as the second heater are executed through the load driving circuit 11. Further, the microcomputer 10 is set with a cleaning time in the cleaning step, respective rinsing times in the first to fourth rinsing steps, and a drying time in the drying step.

The above-mentioned load driving circuit 11
0, a water supply valve 2, a cleaning pump 3, a drainage pump 6, a cleaning heater 5, a drying heater 12,
Apply power. The drying heater 12 is attached to a ventilation passage between the blower motor 8 and the blower opening 1b as shown in FIG. The buzzer 13 shown in FIG. 2 is provided in a dishwasher / dryer according to a second embodiment described later, and is not connected to the load drive circuit 11 according to the present embodiment.

Next, the operation of the dishwasher of the first embodiment will be described with reference to the flowchart of FIG. When a start switch (not shown) of the control device 9 is turned on, the microcomputer 10 starts a cleaning process, outputs an ON signal of the water supply valve 2 to the load drive circuit 11, and enters a water supply process (S).
1, S2). The load drive circuit 11 opens the water supply valve 2 in response to the signal to supply water into the cleaning tank 1. At this time, although not shown, the microcomputer 10 determines whether or not the water in the cleaning tank 1 has reached a specified water level, and closes the water supply valve 2 when the water in the cleaning tank 1 reaches the specified water level. The process ends. Next, time measurement is started (S3), and an ON signal for the cleaning pump 3 and the cleaning heater 5 is output to the load drive circuit 11. The load drive circuit 11 drives the cleaning pump 3 in response to this signal (S4), causing the cleaning heater 5 to generate heat (S4).
5) The dishes are washed while heating the water in the washing tank 1. On the other hand, the microcomputer 10 determines whether or not the measured time has passed the cleaning time (S6), and when the cleaning time has not been reached, the dishwashing with high-temperature water is continued,
When the measurement time reaches the cleaning time, the cleaning pump 3
Then, the cleaning heater 5 is turned off, and the cleaning process is completed.

Next, the microcomputer 10 starts the first rinsing step and sends an ON signal of the drain pump 6 to the load driving circuit 11.
And the wastewater treatment is started (S7, S8). The load drive circuit 11 drives the drainage pump 6 according to the signal, and drains the washing water in the washing tank 1 out of the main body through the drainage hose 7. At this time, the microcomputer 10 determines whether or not the washing water has run out of the water storage tank 1a (not shown). When the washing water runs out, the microcomputer 10 stops driving the drainage pump 6, terminates the drainage process, and supplies water again. The process starts (S9). This process repeats the same operation as the water supply process during the cleaning process,
When the water supply process is completed, time measurement is started (S1).
0), an ON signal of the cleaning pump 3 is output. The load drive circuit 11 drives the cleaning pump 3 in response to the ON signal (S11), and performs first rinsing by injecting cleaning water at normal temperature into the dishes. At this time, the microcomputer 10 determines whether or not the measured time has passed the first rinsing time (S12). If the measured time has not reached the first rinsing time, the microcomputer 10 continues rinsing the tableware with normal temperature water, and performs measurement. When the time reaches the first rinsing time, the cleaning pump 3 is turned off and the first
Finish the rinsing process.

Subsequently, the process enters the second rinsing step and performs the same rinsing as in the first rinsing step (S13 to S1).
8) When the second rinsing process is completed, the process enters the third rinsing process and performs the same rinsing as described above (S19 to S2).
4) At the end, a fourth rinsing step is started (S25).
In this rinsing step, the operations from S26 to S29 are the same as the operations from S8 to S11 in the first rinsing step, and the cleaning heater 5 is heated together with the activation of the cleaning pump 3 (S3).
0), rinse dishes with hot wash water. At this time, the microcomputer 10 determines whether the measured time has passed the fourth rinsing time (S31). If the measured time has not reached the fourth rinsing time, the microcomputer 10 continues rinsing the tableware with high-temperature water. When the fourth rinsing time has been reached, the cleaning pump 3 and the cleaning heater 5 are turned off, and the fourth rinsing step is completed.

When the fourth rinsing step is completed, the microcomputer 10 starts the drying step, outputs an ON signal of the drainage pump 6 to the load drive circuit 11, and starts drainage processing (S3).
2, S33). The load drive circuit 11 drives the drainage pump 6 according to the signal, and drains the washing water in the washing tank 1 out of the main body through the drainage hose 7. On the other hand, the microcomputer 10
Determines whether or not the washing water has run out of the water storage tank 1a as described above (not shown). When the running out of the washing water has occurred, the operation of the drainage pump 6 is stopped to end the drainage treatment, and the time is measured. It starts (S34). And the blower motor 8
And an on signal of the drying heater 12 is output to the load drive circuit 11. The load drive circuit 11 drives the blower motor 8 in accordance with the input ON signal and causes the drying heater 12 to generate heat (S35, S36), and sends high-temperature air into the washing tank 1 to dry the dishes. Start. On the other hand, microcomputer 1
0 determines whether or not the measured time has passed the drying time (S37). If the drying time has not been reached, drying of the tableware by high-temperature ventilation is continued, and the measured time has reached the drying time. Stops the blower motor 8 and the drying heater 12 through the load drive circuit 11, and ends the drying process.

As described above, according to the first embodiment, in the cleaning step and the fourth rinsing step, the temperature of the cleaning water is raised by using the cleaning heater 5, and in the drying step, the tableware is dried by using the blower motor 8 and the drying heater 12. Is forcedly dried, so that the temperature in the washing tank 1 can be made uniform during drying, thereby improving the drying performance, and further reducing the amount of electric power by using different heaters, which is economical. is there.

Further, since the washing heater 5 is not used at the time of drying the tableware, even if the tableware made of resin protrudes from the basket, it is not deformed by the heating of the heater 5, and the user should be careful not to protrude the tableware. This has the effect of eliminating the hassle of having to do so.

Embodiment 2 FIG. 4 is a flowchart showing the operation of the dishwasher / dryer according to Embodiment 2 of the present invention at the time of high-temperature water drainage. The electrical configuration will be described with reference to the block diagram of FIG. In this embodiment, for example, a buzzer 13 which is an alarm display unit is added to the load drive circuit 11, and the function of the drainage control means of the present invention and the time until high-temperature water is drained are set in the microcomputer 10 of the first embodiment. Have been. For example, when the measurement of the time is started when the first rinsing step and the drying step are started, the buzzer 13 is activated via the load drive circuit 11, and the measurement time is longer than a preset time, for example, 5 seconds. Drives the drain pump 6 through the load drive circuit 11.

Next, this function will be described with reference to the flowchart of FIG. The operation of the cleaning step, the first
The operations after the drainage processing in the rinsing step, the operations from the second rinsing step to the fourth rinsing step, and the operations after the drainage processing in the drying step are the same as those in the first embodiment, and thus description thereof will be omitted. When the microcomputer 10 starts the first rinsing step upon completion of the cleaning step (S7), first, it outputs a buzzer-on signal. At this time, the load drive circuit 11 activates the buzzer 13 in response to the input of the buzzer ON signal and generates an alarm sound (S7a). On the other hand, the microcomputer 10 has a buzzer 13
(S7b), and it is determined whether the preset time of 5 seconds has been reached (S7b).
c). If the measurement time has not reached the 5 seconds, the buzzer 13 will continue to sound, and if the measurement time has reached 5 seconds, the buzzer 13 will stop sounding and drainage processing will be executed (S8). This processing and the subsequent operations are the same as in the first embodiment as described above. Further, when the drying step is started upon completion of the fourth rinsing step (S32), the microcomputer 10 outputs the buzzer-on signal. Thereafter, the buzzer 13 is activated until 5 seconds elapse and a warning sound is issued (S32a to S32c), as described above.
After the lapse of the time, the wastewater treatment is started, and the high-temperature water in the washing tank 1 is drained through the drainage hose 7 (S33).

As described above, when draining the high-temperature water having washed the dishes in the washing step and the fourth rinsing step, the buzzer 13 is used.
The warning sound is used to alert the user, so that a user who arranges the drain hose 7 in the sink of the sink can avoid it even when working on the sink, and is easy to use. There is an effect that can be provided.

Embodiment 3 FIG. FIG. 5 is an explanatory diagram of an operation process of the dishwasher / dryer according to Embodiment 3 of the present invention. In the present embodiment, the microcomputer 1 of the control device 9 of the first embodiment
Instead of the function of turning on the cleaning pump 3 and the cleaning heater 5 at the time of rinsing in the fourth rinsing step set to 0, the microcomputer 10 has a function of driving only the cleaning pump 3.
In preparation for.

In the case of this embodiment, the first embodiment includes a cleaning step, a first rinsing step, a second rinsing step, and a third rinsing step.
However, during the rinsing of the fourth rinsing step, only the cleaning pump 3 is driven to inject the cleaning water at room temperature, and during the drying of the drying step, the blowing motor 8 and the drying heater 12 enter the cleaning tank 1. The dishes are forced to dry by blowing in hot air.

As described above, even if the dishes are rinsed with normal-temperature water at the time of rinsing in the fourth rinsing step, they are forcibly dried by the blower motor 8 and the drying heater 12, so that the inside of the washing tank 1 is dried at the same time as in the first embodiment. This has the effect that the temperature is made uniform, the drying performance is improved, and the amount of electric power can be reduced by using heaters selectively, which is economical. In addition, since the cleaning heater 5 is prevented from generating heat during the rinsing in the fourth rinsing step, the operations from the first rinsing step to the fourth rinsing step are repeated in the same manner, so that there is an effect that control can be simplified. .

Embodiment 4 In the fourth embodiment, the function of the drain control means of the present invention and the time until high-temperature water is drained are set in the microcomputer of the control device provided in the dishwasher of the third embodiment. For example, when the cleaning process is completed and the first rinsing process is started, the buzzer 13 is activated for 5 seconds to emit an alarm sound before rinsing the dishes with room temperature water, and after the lapse of the time, the drainage process is started and the cleaning tank is started. The high-temperature water in 1 is drained through a drain hose 7, and at the end, the washing pump 3 is activated to start rinsing.

As described above, when draining the high-temperature water having washed the dishes in the washing step, the buzzer 13 is used to warn the user. Therefore, for a user who uses the drain hose 7 by arranging it in the sink of the sink. In addition, even if the work is performed on the sink, it is possible to avoid the problem and to provide an easy-to-use dishwasher / dryer.

[0030]

As described above, according to the present invention, in the final rinsing step, the temperature of rinsing water is raised by using the first heater, and in the drying step, tableware is used by using the blower motor and the second heater. Are dried by force so that the washing tank 1
The temperature in the inside can be made uniform, so the drying performance improves,
Furthermore, there is an effect that the amount of electric power can be reduced and the cost can be reduced by using different heaters. Further, since the first heater is not used at the time of drying the tableware, even if the tableware made of resin protrudes from the basket, it is not deformed by the heating of the heater, and the user must pay attention to the protrusion of the tableware. There is also an effect that the troublesomeness is eliminated.

In a plurality of rinsing steps, tableware is rinsed by the same operation of driving a washing pump after drainage and water supply,
At the time of drying, the forced drying is performed by the blower motor and the second heater, so that in addition to the same effect as described above, there is also an effect that control during rinsing can be simplified.

Further, when draining the high-temperature water in the cleaning tank heated by the first heater, the alarm display section is activated for a preset time, and then the drain pump is driven to drive the water in the cleaning tank. Since the high-temperature water is drained, the user who uses the drain hose placed in the sink of the sink can avoid the work even when working on the sink, and provide an easy-to-use dishwasher. This has the effect.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a dishwasher / dryer according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the dishwasher / dryer according to the first embodiment.

FIG. 3 is a flowchart illustrating an operation of the dishwasher / dryer according to the first embodiment.

FIG. 4 is a flowchart showing the operation of the dishwasher / dryer according to Embodiment 2 of the present invention when draining high-temperature water.

FIG. 5 is an explanatory diagram of an operation process of a dishwasher / dryer according to Embodiment 3 of the present invention.

FIG. 6 is a sectional view of a conventional dishwasher / dryer.

FIG. 7 is an explanatory view of an operation process of a conventional dishwasher / dryer.

[Explanation of symbols]

1 washing tank, 2 water supply valve, 3 washing pump, 4
Injection nozzle, 5 cleaning heater, 6 drainage pump,
8 blower motor, 9 controller, 10 microcomputer, 11 load drive circuit, 12 drying heater, 13 buzzer.

Claims (3)

[Claims] 1. A cleaning pump for absorbing water in a supplied cleaning tank and injecting it into dishes in the cleaning tank via an injection nozzle, a first heater for heating the water in the cleaning tank, and an outside air A blower motor for sucking air and sending it into the cleaning tank through the blower port, a second heater provided between the blower motor and the blower port, and a final rinse of a plurality of preset rinsing steps. Before the step, the cleaning pump is driven, and in the final rinsing step, the cleaning pump is driven,
A tableware comprising: first control means for causing the first heater to generate heat; and second control means for driving the blower motor and causing the second heater to generate heat during a drying step. Wash dryer. 2. The dishwasher / dryer according to claim 1, wherein the first control means drives only the washing pump during a last rinsing step. 3. A timer, an alarm display section, and when draining high-temperature water in the washing tank heated by the first heater, the timer and the alarm display section are activated, and a measurement time of the timer is measured. 3. A tableware according to claim 1, further comprising: drainage control means for driving a drainage pump to drain high-temperature water in the washing tank when a preset time has elapsed. Wash dryer.