JP2003284669A - Dish washer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such problems as insufficient washing performances or useless spending of operation time and running costs under excessive washing and rinsing processes when the temperature of the washing or rinsing water supplied is low as the target temperature is fixed regardless of the temperature of the washing or rinsing water supplied in the conventional dish washers in which the washing or rinsing water supplied is heated to the optimum temperature in the washing or rinsing process. <P>SOLUTION: A hot water supply selection switch is provided to enable users to select the temperature of the washing or rinsing water supplied to the dish washers optionally from more than one selection values to alter operations in either of the washing or rinsing process or both thereof depending on the temperature of the washing water. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention optimally controls various elements related to dishwashing so that a constant washing performance can be always achieved without excess or deficiency of operating time and running cost regardless of the temperature of the water supply. About the dishwasher to do.

[0002]

2. Description of the Related Art In a first example of a conventional dishwasher, during the washing process and the final rinsing process, until the wash water and the rinsing water reach a preset target temperature suitable for washing and rinsing, Many examples are known in which heating is performed by a heater.

Further, as a further preferable example, when the cleaning water and the rinsing water heated by the heater reach the first target temperature within a preset target time, the cleaning and rinsing water reach the target time. When the rinsing process is completed and the first target temperature is not reached within the target time, the dishwasher that controls to extend the cleaning process and the rinsing process until the second target temperature slightly lower than the first target temperature is reached. is there. in this case,
Especially when the dishwasher is supplied with hot water that has been preheated by a heat source such as a water heater, the accumulated water in the hot water supply pipe reduces the temperature of the hot water supplied to the dishwasher, and the outside air temperature or the hot water outlet temperature control error. It is possible to suppress the influence of fluctuations in the supplied hot water temperature and the like and maintain a constant cleaning performance.

In the second example of the conventional dishwasher, the water supply temperature is controlled by a switch provided on the operation unit.
A large number of dishwashers are also known that select from two types of hot water supply and perform different washing operations depending on the selection result.

In the case of the above example, if control is performed to switch operating conditions such as energizing the heater or driving the water supply means in accordance with the selection of the switch, the cleaning performance can be maintained without being affected by the water supply temperature to some extent. It is possible.

[0006]

However, in the prior art of the first example, the conventional technique of the first example does not depend on the water temperature of the supplied water.
Since the cleaning water is always heated by the heater until either the first target temperature or the second target temperature is reached, for example, when cold water is supplied, when hot water is supplied. Compared with the above, the time required for the cleaning or final rinsing step becomes longer, and the cleaning operation is performed more than necessary for cleaning the dishes.

Further, in the case of the dishwasher which is the prior art of the second example, one of two types of water supply / hot water supply is selected by a switch provided in the operation section and a different washing operation is performed depending on the selection result, the selection is made. Since there are only two ranges, for example, when the temperature is lower than the temperature suitable for use in the dishwasher, but when hot water having a temperature higher than room temperature water is supplied, the cleaning performance becomes excessive or insufficient depending on the operation control content.

[0008]

In order to solve the above problems, the first aspect of the present invention is characterized in that the operation in each step of prewashing and rinsing is changed depending on the temperature of the water supply.

According to a second aspect of the present invention, a heater for heating the cleaning water in the cleaning tank is provided, and the heating of the cleaning water by the heater is reached in at least one or more of the cleaning and rinsing steps depending on the supply water temperature. Characterized by changing the temperature.

According to a third aspect of the present invention, when the temperature reached by the heater for heating the wash water does not reach the preset first target temperature within the preset series of washing / rinsing process operation times. In the dishwasher for extending the process operation time to reach a second target temperature lower than the first target temperature, the first target temperature and the second target temperature are changed according to the water supply temperature. And

According to a fourth aspect of the present invention, the operating time of each of the washing and rinsing strokes is changed according to the feed water temperature.

According to a fifth aspect of the present invention, in the dishwasher that switches between continuous driving and intermittent driving of the water feeding means within the operating time of each washing / rinsing stroke, continuous driving and intermittent driving are performed. It is characterized in that the timing of switching is changed according to the feed water temperature.

According to a sixth aspect of the present invention, a user is provided with an operation unit for performing operations such as turning on / off the power source and starting / temporarily stopping the operation. The hot water supply temperature selection switch provided in the operation unit selects the water supply temperature. It is characterized by

According to a seventh aspect of the present invention, there is provided a temperature detecting means provided in the cleaning tank for detecting the water temperature in the tank, and a discharging means for discharging the water in the cleaning tank to the outside of the machine. The temperature of the water supplied to the cleaning tank is detected by the temperature detecting means, and when the detected temperature falls below a predetermined value set by the control means, the water supplied by the discharging means is discharged to the outside of the cleaning tank. It is characterized in that the predetermined value is changed according to the water supply temperature selected by the hot water supply temperature selection switch.

According to an eighth aspect of the present invention, a plurality of user-selectable driving courses are provided, and in at least one or more of the plurality of driving courses, a washing process or a final rinsing process, or both of them are performed. In a dishwasher that manages the end of each process by the operation time of the water supply unit that is separately set regardless of the reached temperature, the time of a series of process operations of washing and rinsing according to the water supply temperature, and the cleaning by the heater It is characterized in that the termination of each step is controlled by both of the temperatures reached by heating the water.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of a dishwasher according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an internal structure diagram of the dishwasher of the present invention. 1
Is a washing tank. Inside the washing tank 1, a warm water heater 2 for heating the washing water stored in the washing tank 1 and a dish basket 3 for storing dishes are provided, and the washing water is pumped under the washing tank 1. A solenoid valve 6 for supplying water into the cleaning tank 1, a cleaning tank, which is provided with a pump 5 which also serves as a water supply means for spraying the cleaning water from the cleaning nozzle 4 and a drain means for discharging the cleaning water to the outside of the dishwasher. Water level detecting means 7 for detecting the water level of the washing water in 1, washing fan 1 for blowing air into washing tank 1, blowing fan 1
A warm air heater 11 for warming the air blown by 0 is provided. A control device 8 is provided inside the dishwasher, and an operation panel 9 for selecting a washing course is provided on the front surface of the dishwasher.

FIG. 2 shows a block diagram of the control device 8. A microcomputer 20 is provided in the control device, and a preprogrammed program is stored in a ROM inside the microcomputer 20, and a CPU inside the microcomputer 20 calculates signals from various input circuits while A series of operations of cleaning, rinsing and drying are performed by outputting a signal to an external output circuit and a drive circuit based on a program stored in the ROM.

FIG. 3 shows a detailed view of the operation panel 9. Thirty
Is a power switch for turning on / off the power, 31 is a start / pause switch for starting and stopping cleaning, 32
Is a washing course switch for selecting a washing course, and a washing course switch 32 is used for washing lightly soiled dishes. The operation is always controlled by a fixed process execution time regardless of the water supply temperature "8 minutes course" , "Standard course" when cleaning standard soiled dishes, "Easy course" when cleaning stubborn soiled dishes. Washing / rinsing time and cleaning water heating means for each course. It has a plurality of cleaning courses in which the temperature reached and the number of rinses are preset in each course. Also,
33 is a dry-only switch that is selected when it is desired to perform only drying without cleaning, and the dry-selection switch 34 is a switch that can set the drying time to 15 minutes, 30 minutes, and 60 minutes. Cleaning course switch 22
It can be set when the cleaning course is selected at (8 minutes, standard, thorough) or when only the drying course is selected.

Further, the operation panel 9 is provided with a water temperature selection switch 50 used by the user to select the temperature of the water supplied to the dishwasher in advance, and a lamp 51 for displaying the selection content. In the present example, the water temperature selection switch 50 has a push button shape in which the selection contents are switched each time it hangs down, but a dial-shaped selection switch may be used, for example. Further, assuming that the set temperature of the heat source such as the water heater is not changed so much in a household where the dishwasher is used and the set temperature is used at a substantially constant value, the water temperature selection switch 50 is not necessarily the operation unit 9. It may not be provided, for example, it may be provided in a place that is difficult to operate during normal use such as the back of a dishwasher, or an independent switch may not be provided, for example, a start / pause switch may be hung down for a predetermined time or longer The water supply temperature may be selected by hanging one or more switches provided for this purpose by a method not normally used. Further, although the lamp 51 is represented by a light emitting element such as an LED according to the number of selectable steps, a display element such as a 7-segment LED may be used to display the selected water temperature numerically.

In each of the steps of washing, rinsing (performing several times) and final rinsing, the electromagnetic valve 6 is opened to supply water into the cleaning tank 1, and a predetermined signal is supplied from the water level detecting means 7 to a predetermined level. When the microcomputer 20 recognizes that the water level has been reached, the water supply step of closing the solenoid valve 6 and the circulation step of circulating the cleaning water in the cleaning tank 1 by pumping the cleaning water in the cleaning tank 1 from the pump 5 to the cleaning nozzle 4. The drainage step of discharging the cleaning water in the cleaning tank 1 to the outside of the container by the pump 5 is sequentially executed. Usually, at the time of washing and final rinsing, the washing water stored in the washing tank 1 is circulated while heating the washing water stored in the washing tank 1 to a predetermined temperature by the heater 2 during the washing and final rinsing. In the rinsing to be performed, the heating of the cleaning water by the heater 2 is not performed, but only the cleaning water pumped from the pump 5 to the cleaning nozzle 4 is circulated.

The user uses a dishwasher to wash the dishes,
When drying, set the dishes to be washed in the dish basket 3, press the power switch 30 to turn on the power, select a desired washing course from the washing course 32, and start / stop the water temperature selection switch. By pressing 31 to start washing, the dishwasher is sequentially washed, rinsed, dried and washed / dried by the control device 8.

The internal structure of the conventional dishwasher is the same as that of the dishwasher shown in FIG.
In the conventional dishwasher, among washing / rinsing / final rinsing / drying shown in the operation flowchart of FIG. 13, in washing and final rinsing, as shown in the operation flowchart of FIG. The rinse water is heated by the heater, and when the water temperature reaches the first target temperature, the heating by the heater is terminated even during the process, and the pump is circulated until the process time reaches the target time. If the water temperature does not reach the first target temperature within the target time, the steps are performed until the water temperature reaches the second target temperature slightly lower (about 6 ° C to 10 ° C) than the first target temperature even after the target time has elapsed. Extend.

The transition of the water temperature at the time of washing or final rinsing in the conventional dishwasher is as shown in FIG. In this case, it is possible to feed water temperature is carried out a temperature (initial temperature t _a) or its vicinity (initial temperature t _b) just enough cleaning performance and power consumption if proper cleaning suitable for cleaning with dishwasher However, even in the case of hot water whose initial water temperature is not suitable for washing with a dishwasher (initial water temperature t _c ) or room temperature water that is not heated by a heat source such as a water heater (initial water temperature t _d ), the initial water temperature t Second same as in _b
Since the heater heating operation is performed up to the target temperature, excessive operation is performed.

FIG. 4 shows the washing of the first embodiment of the present invention.
Process involving water temperature heating with a heater such as final rinsing
The operation flowchart of In FIG. 4, washing,
During processes involving water temperature heating with a heater such as final rinsing
Check the contents of the water temperature setting flag, and if the water temperature setting flag is 0
If there is a second target temperature t_TwoThe water temperature setting flag is 1
Then, the second target temperature is t_Two', The water temperature setting flag is 2
Then, the second target temperature is t _TwoSet to ''. In addition, water temperature setting
The constant flag is as shown in the flowchart of FIG.
The water temperature setting switch droops by 1 and increases to the maximum value.
If the water temperature setting switch is drooped while reaching
Return to 0. In this example, the water supply temperature is set in three stages.
However, the number of stages that can be set may be three or more. Na
Water temperature heating with a heater such as rinsing process and drying process
The whole operation flowchart including the process without
It is represented in FIG. 13 like the conventional dishwasher.

FIG. 5 shows the transition of the water temperature during the washing and final rinsing steps of the first embodiment of the present invention. In this case, water temperature is suitable for cleaning by dishwasher temperature (initial temperature t _a) or compared with the vicinity (the initial temperature t _b), hot water to the extent that the water supply temperature is not suitable for cleaning with dishwasher (initial temperature t _c ) Or normal temperature water not heated by a heat source such as a water heater (initial water temperature t _d ), the water temperature is low but the process time is long, so each effect is offset. By setting the target temperature of 2, it is possible to always perform proper operation without excess or deficiency regardless of the initial water temperature.

FIG. 6 shows an operation flowchart of a process involving heating with water temperature according to the second embodiment of the present invention.
In FIG. 6, the contents of the water temperature setting flag are confirmed during the process involving water temperature heating by the heater such as washing and final rinsing. If the water temperature setting flag is 0, the target time is T ₁ and the water temperature setting flag is 1 If there is, the target is set to T ₁ ′, and if the water temperature setting flag is 2, the target time is set to T ₁ ″. In addition,
In this example, the water supply temperature is set in three stages, but the number of stages that can be set may be three or more. The entire operation flowchart including the method of setting the water temperature setting flag and the steps such as the rinsing step and the drying step that do not involve the water temperature heating by the heater is the same as that of the first embodiment of the present invention.

FIG. 7 shows the transition of the water temperature during the washing or final rinsing step of the second embodiment of the present invention. In this case, compared to the temperature of the feed water temperature is suitable for cleaning by dishwasher (initial water temperature t _a) or near (initial temperature t _b),
Suitable for dishwasher even when the water supply temperature is not suitable for washing with a dishwasher (initial water temperature t _c ) or normal temperature water that is not heated by a heat source such as a water heater (initial water temperature t _d ). By adopting a preset target time that ensures cleaning performance equivalent to that when water is supplied at different temperatures, proper operation can always be performed without excess or deficiency regardless of the initial water temperature. .

In addition, conventional dishwasher washing, rinsing,
In an example of driving the circulation pump in any of the final rinsing steps or in a plurality of steps, in order to facilitate the cleaning by swelling the dirt adhering to the dishes at the beginning of the operation of the dishwasher, the washing water is continuously washed over the dishes. In the latter half of operation of the dishwasher, in order to obtain a strong jet that can easily remove swollen dirt from the dishes, the circulation pump is repeatedly operated / stopped in a short cycle to intermittently inject the cleaning water. ing. In this case, switching between continuous injection and intermittent injection is performed according to the elapsed time from the start of each process. The cycle of operation / stop in intermittent injection or the ratio of operation time / stop time in one cycle may be further switched to two or more patterns in the period in which intermittent injection is performed.

The operation pattern of the circulation pump in the final rinsing step of the third embodiment of the present invention is shown in FIG.
In this case, water temperature is suitable for cleaning by dishwasher temperature (initial temperature t _a) or compared with the vicinity (the initial temperature t _b), hot water to the extent that the water supply temperature is not suitable for cleaning with dishwasher (initial temperature t _c ) Or normal temperature water (initial water temperature t _d ) not heated by a heat source such as a water heater,
Since the swelling effect due to the continuous spraying is small, there is a concern that the dirt may not be sufficiently scraped off from the tableware by the subsequent intermittent spraying. Therefore, when a lower water supply temperature is selected by the water supply temperature selection switch, by setting the period for intermittent injection to be longer, the fixed value of the swelling effect due to the water temperature is supplemented, and proper operation is always performed without excess or deficiency. It will be possible. In this example, switching between continuous injection and intermittent injection is determined by the elapsed time from the start of each stroke, but for example, it is selected by calculation from the difference between the water temperature during the process execution and the target temperature. Other methods may be used, such as determining the expected arrival time to the target temperature.

In the first to third embodiments of the present invention, the target temperature, the target time, the period during which the pump is continuously operated, and the intermittent period are defined, which determine the operating conditions for each of the steps of washing, rinsing, and final rinsing. Although an example in which any one of the operating periods is changed according to the selected feed water temperature is shown, for example, for the plurality of second target temperatures shown in the first embodiment, the first target temperature is slightly higher than the second target temperature. And set a plurality of target times shown in the second embodiment,
When the first target temperature is reached before the target time elapses for each selected feed water temperature, heating by the heater is stopped at that point, only the circulation pump is driven until the target time is reached, and when the target time is reached, the first When the target temperature of 2 has not been reached, heating by the heater and driving of the circulation pump are performed until the water temperature reaches the second target temperature, and continuous operation and intermittent operation of the circulation pump are switched. Each stroke may be controlled by combining a plurality of elements that determine operating conditions, such as performing each selected water temperature at an appropriate timing.
In this case, even if there is an error in the actual water supply temperature with respect to the selected water supply temperature, finer operation control can be performed so that proper cleaning performance without excess or deficiency can be obtained.

Further, the control content changed according to the selected feed water temperature may be other than the above, for example, control such as changing the number of washing / rinsing steps in one operation.

Further, in the conventional dishwasher, the water temperature supplied at the start of the washing operation is detected by the water temperature detecting means provided in the washing tank. If the water temperature does not reach the temperature suitable for dishwashing, the inside of the washing tank is washed. In the example of performing the control of once discharging the water and supplying the water again, on the assumption that the supplied water is preheated by a heat source such as a water heater, the water supply temperature reaches a temperature suitable for dishwashing. If not, it is determined that the water accumulated in the water supply route has been supplied to the cleaning tank, and the water in the cleaning tank is once discharged and water is supplied again. Furthermore, if a heat source such as a water heater is not installed in the water supply path to which the dishwasher is connected, water will be consumed unnecessarily. In such a case, the pipe accumulated water drainage operation is not performed. It is possible for the user to set.

In the fourth embodiment of the present invention, the water temperature supplied at the start of the washing operation is detected by the water temperature detecting means provided in the washing tank, and when the water temperature does not reach the temperature suitable for dish washing, the washing is performed. FIG. 9 shows an operation flowchart of an example in which control is performed to once discharge the water in the tank and supply water again. In this case, since the user changes the threshold value for judging the execution / non-execution of the accumulated water drainage of the pipe in accordance with the water supply temperature selected by the water temperature selection switch, proper cleaning without excess or deficiency at each water supply temperature. It becomes possible to drive. Further, among the supply water temperatures selected by the user, at least one or more low temperature side selection results may be set such that the pipe stagnant water drainage is not unconditionally performed.
Furthermore, the threshold value for determining the execution / non-execution of the pipe accumulated water drainage is not only the selection result by the water temperature selection switch,
It may be changed depending on the selected driving course, or a threshold value may be set for each combination of the selected water temperature and the driving course.

Further, in the conventional dishwasher, in at least one of a plurality of operation courses which can be selected by the user, heating by a built-in heater is not performed during the washing and final rinsing steps, and a predetermined preset value is set. In the case of finishing each process with the passage of time, the water supplied is suitable for dishwashing in advance by a heat source such as a water heater because of the premise that the course is set to wash slightly soiled dishes. The target time is set so that a sufficient cleaning or rinsing effect can be obtained without heating the cleaning water or rinsing water by the heater on the assumption that the heater is heated to a different temperature.

However, in the above-mentioned example, if the supplied water is not preheated to a temperature suitable for dish washing, the desired cleaning performance cannot be obtained due to insufficient temperature of the cleaning or rinsing water.

FIG. 10 is a flowchart showing the operation of the washing process in the case where the operation course set for the purpose of washing slightly soiled dishes is selected in the fifth embodiment of the present invention. In this case, when the water supply temperature selected by the water supply selection switch is a temperature suitable for washing dishes, sufficient cleaning performance can be obtained without heating the cleaning water by the heater during the cleaning process. Cleaning is performed only by operating the circulation pump without heating, and the end of the cleaning process is determined only by whether or not the process execution time has reached a preset target time. When the water supply temperature selected by the water supply selection switch is lower than the temperature suitable for dishwashing, in order to obtain the same cleaning performance as in the case of the water supply temperature suitable for dishwashing, the cleaning water is heated by the heater and the target at the same time. The time is also changed appropriately. As a result, sufficient cleaning performance is secured even when the water supply temperature is low. Further, in this example, the operation control by the selected water temperature in the cleaning step has been described, but the same control may be performed in another step such as the final rinsing step.

In the above example, when the selected feed water temperature is low, the heating by the heater and the change of the target time are performed at the same time, but it is desired to extend the target time without heating the heater. The cleaning performance may be obtained. Furthermore, when the desired cleaning performance can be obtained only by heating with a heater, such as when the supplied water temperature is slightly lower than the temperature suitable for dishwashing, it is not necessary to extend the target time, and conversely The target time may be shortened within the range where the cleaning performance is obtained.

[0038]

As is apparent from the above description, the present invention changes the operation in each step of washing and rinsing according to the feed water temperature according to claim 1, thereby making it possible to reduce the operating time and power consumption at any feed water temperature. Therefore, it is possible to perform an appropriate cleaning operation without waste.

According to a second aspect of the present invention, in at least one of the washing / rinsing steps, the temperature at which the heater overheats the wash water is changed according to the temperature of the water to ensure proper washing performance. At the same time, the heating time by the heater can be shortened and excessive power consumption can be suppressed.

According to the third aspect of the present invention, when the temperature reached by the heater for heating the wash water does not reach the preset first target temperature within the preset operation time of each washing / rinsing process, In the dishwasher that extends the operation time until it reaches a second target temperature lower than the first target temperature, by changing the first target temperature and the second target temperature according to the water supply temperature, the water supply temperature can be changed. Even if there is a slight difference with respect to the selected water temperature, it becomes possible to suppress excessive power consumption and to carry out an appropriate cleaning operation.

According to the present invention, the operating time of each washing / rinsing process is changed according to the feed water temperature so that the desired washing performance or rinsing performance is always selected regardless of the water temperature.

According to a fifth aspect of the present invention, in the dishwasher which switches between continuous driving and intermittent driving of the water feeding means within the operating time of each washing / rinsing stroke, continuous driving and intermittent driving are performed. By changing the switching timing according to the water supply temperature, the desired cleaning performance recovery and rinsing performance are always selected regardless of the water temperature.

According to the sixth aspect, the user selects the temperature of the water supplied to the dishwasher with the hot water supply temperature selection switch provided in the operation section, so that the temperature of the cleaning water can be controlled by the outside air temperature or the temperature in the cleaning tank. It is possible to always select an appropriate cleaning operation regardless of fluctuations.

In the seventh aspect, the temperature of the water supplied to the washing tank is detected by the temperature detecting means immediately before the washing step,
When the detected temperature falls below a predetermined value set by the control means, the discharge means has a function of discharging the wash water out of the cleaning tank, and the predetermined value is changed according to the selected water temperature. As a result, it is possible to perform an appropriate cleaning operation without wasting operating time and power consumption at any supply water temperature.

According to the present invention, in at least one or more of the plurality of operation courses, the operation of the water supply means which is separately set in the washing step and / or the final rinsing step, or both steps, regardless of the reached temperature of the washing water. In the dishwasher that manages the end of each process depending on time, the time of a series of process operations of washing and rinsing, depending on the water supply temperature,
By controlling the completion of each of the steps by both the heating temperature of the cleaning water and the heating temperature of the cleaning water by the heater, it is possible to perform an appropriate cleaning operation without excess or deficiency.

[Brief description of drawings]

FIG. 1 is an internal structure diagram of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control device of the dishwasher according to the embodiment of the present invention.

FIG. 3 is a diagram of an operation panel according to the embodiment of the present invention.

FIG. 4 is an operation flowchart in the first embodiment of the present invention.

FIG. 5 is a diagram showing a water temperature transition during a process involving heating by a heater according to the first embodiment of the present invention.

FIG. 6 is an operation flowchart in the second embodiment of the present invention.

FIG. 7 is a diagram showing a water temperature transition during a process involving heating by a heater according to the second embodiment of the present invention.

FIG. 8 is a diagram showing an operation pattern of a circulation pump according to a third embodiment of the present invention.

FIG. 9 is an operation flowchart in the fourth embodiment of the present invention.

FIG. 10 is an operation flowchart of the fifth embodiment of the present invention.

FIG. 11 is a flowchart of a feed water temperature selecting operation according to the embodiment of the present invention.

FIG. 12 is an operation flowchart in the conventional embodiment.

FIG. 13 is an operation flowchart in the conventional embodiment.

[Explanation of symbols]

1… Washing tank 2… Hot water heater 3 ... Tableware basket 4… Washing nozzle 5… Pump 6 ... Solenoid valve 7… Water level detection means 8 ... Control device 9… Operation panel 10 ... Blower fan 11… Warm air heater 20 ... Microcomputer 21 ... Buzzer 22 ... Nonvolatile memory 30… power on / off switch 31… Start / pause switch 32… Washing course switch 33… Drying only selection switch 34… Drying selection switch 50… Water temperature selection switch 51 ... Lamp

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shunji Otsuka             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. F term (reference) 3B082 DA02 DB01 DC01

Claims (8)

[Claims] 1. A cleaning tank for storing an object to be cleaned such as tableware, a nozzle for spraying cleaning water or rinsing water on the object to be cleaned, and a water supply means for pumping the cleaning water in the cleaning tank to the nozzle. A dishwasher provided with a control means for executing each step such as washing and rinsing of dishes, wherein the operation in each step of washing and rinsing is changed depending on the water supply temperature. 2. A temperature of water supplied with a heater for heating the cleaning water in the cleaning tank, wherein at least at least one of the cleaning and rinsing steps, the heating temperature of the cleaning water by the heater is supplied. The dishwasher according to claim 1, wherein the dishwasher is changed according to the above. 3. When the heating ultimate temperature does not reach the preset first target temperature within the preset operating time of each washing / rinsing stroke, the process operating time is set to the first target temperature. A method of extending until reaching a second target temperature lower than the target temperature, wherein the first target temperature and the second target temperature are changed according to the temperature of the supplied water. Item 2. The dishwasher according to item 2. 4. The dishwasher according to claim 1, wherein the operating time of each washing / rinsing step is changed according to the temperature of the supplied water. 5. In a dishwasher that switches between continuous driving and intermittent driving of the water supply means within the operating time of each of the washing and rinsing strokes, the timing of switching between continuous driving and intermittent driving. Is changed according to the temperature of the water supplied, The dishwasher of Claim 1 thru | or 4 characterized by the above-mentioned. 6. A hot water supply temperature selection switch provided in the operation unit is provided with an operation unit for performing operations such as turning the power on / off and starting / temporarily stopping the operation, and the water supply temperature is selected. Item 6. The dishwasher according to Items 1 to 5. 7. A washing tank is provided with a temperature detecting means for detecting the water temperature and a discharging means for discharging the water in the washing tank to the outside of the machine, and is supplied to the washing tank immediately before the washing step. The temperature detecting means detects the temperature of water, and when the detected temperature falls below a predetermined value set in the control means, the discharging means has a function of discharging the cleaning water to the outside of the cleaning tank, and 7. The dishwasher according to claim 6, wherein the predetermined value is changed according to the water supply temperature selected by the hot water supply temperature selection switch provided in the operation unit. 8. A plurality of operation courses selectable by a user are provided, and in at least one or more of the plurality of operation courses, the temperature reached by the wash water is reached in the washing step or the final rinsing step, or both steps. In a dishwasher that manages the end of each process by the operation time of the water supply unit that is set independently, the time for a series of process operations of washing and rinsing, and the heating of the wash water by the heater, depending on the water supply temperature. The dishwasher according to any one of claims 1 to 7, wherein the termination management of each of the steps is performed based on both the ultimate temperatures.