JPH07265251A - dishwasher - Google Patents

Abstract

(57) [Summary] [Purpose] In a dishwasher for washing dishes by spraying washing water on the dishes stored in the washing tank, variations in power supply voltage and ambient temperature (ambient temperature) surrounding the dishwasher
The stable drying time is always calculated according to the capacity of the tableware without being affected by. [Structure] The temperature of the washing water in the washing tank 1 accommodating the dishes 2 is detected by a thermistor 8 while being heated by a heater 7 and jetted toward the dishes 2 by a washing pump 4 to wash the dishes 2. The control means 13 controls a series of program sequences for the rinsing and drying processes. Control means 13
In the above, the time required for drying is calculated from the temperature detected by the thermistor 8 immediately after the start of the program sequence and the temperature rise time in the predetermined temperature section detected by the thermistor 8.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In recent years, a dishwasher has been proposed in which the capacity of the dish put in the dishwasher is simply determined and the operating time is controlled more finely according to the determination.

Conventionally, this kind of dishwasher has been constructed as shown in FIG. The configuration will be described below.

As shown in the figure, a cleaning tank 1 stores dishes 2 inside and stores cleaning water at the bottom. Cleaning nozzle 3
Is rotatably supported in the washing tank 1 and spouts washing water toward the tableware 2. The washing pump 4 sends the washing water to the washing nozzle 3, and the washing pump 4 uses a motor 5
Driven by. The water level sensor 6 detects the water level in the cleaning tank 1 and outputs it as an electric signal. The heater 7 is arranged at the bottom of the cleaning tank 1 to heat the cleaning water. The thermistor (temperature detection means) 8 is attached to the bottom of the cleaning tank 1 so as to be in close contact with the outside, and detects the temperature of the cleaning water. The blower fan 9 sends out the steam in the cleaning tank 1 and is discharged from the exhaust port 10 to the outside of the machine. In addition, 11 is a tableware basket in which the tableware 2 is placed. The control means 12 is a tableware 2
Controls a series of sequential operations of cleaning, rinsing, and drying processes.

The operation of the above structure will be described. When the user places the dishes 2 in the dish basket 11 and stores them in the washing tank 1 and puts the detergent and then starts the operation, first, the water level at the bottom of the washing tank 1 is set. A predetermined amount of tap water is supplied until the sensor 6 detects a predetermined water level. Then, the motor 5 and the heater 7 are energized, and the washing water is heated and jetted from the washing nozzle 3 toward the dishes 2 by the washing pump 4. At this time, the temperature of the wash water is detected by the thermistor 8, and the control means 12 always grasps the temperature of the wash water.

The temperature of the wash water reaches a predetermined temperature, and
When a predetermined time has elapsed from the start of cleaning, the control means 12 ends the cleaning process and once drains the cleaning water. Next, tap water is newly supplied, and the same operation as the above-mentioned washing process is performed for several minutes to drain the water. After repeating this rinsing step several times, the same operation as the washing step called a heat rinsing step is performed, and when the predetermined temperature is reached, the operation is finished and drained. Finally, the blower fan 9 is operated to discharge the steam in the cleaning tank 1 to the outside of the machine, and at the same time, the heater 7 is intermittently energized to remove the dishes 2
Is heated to dry the attached water drops.

In the above-mentioned series of operations, the degree of temperature rise of the washing water in the washing process or the rinsing process is checked to detect the capacity of the tableware 2, and the operating time of the drying process is changed according to the degree. That is, when the input value of the heater 7 is constant, the heat capacity decreases as the capacity of the tableware 2 decreases, and the degree of temperature rise of the wash water increases.

As a result, a constant drying performance is always obtained regardless of the tableware capacity, and at the same time, energy saving and time saving are achieved.

[0009]

In such a conventional dishwasher, in examining the degree of temperature rise of the wash water in the washing process or the rinsing process, variations in power supply voltage in general households and the surroundings of the dishwasher are investigated. It has a dedicated peripheral circuit such as power supply voltage detection means and atmosphere temperature detection means to detect each from the factors such as being easily affected by the temperature (ambient temperature) of It had a problem that it needed to be corrected.

The present invention is to solve the above-mentioned problems. The present invention does not have a dedicated peripheral circuit such as a power supply voltage detecting means and an ambient temperature detecting means, and has a variation in the power supply voltage and an ambient temperature surrounding the dishwasher (ambient temperature The first object is to always obtain stable drying performance according to the capacity of the tableware, without being affected by (1).

A second object of the present invention is to obtain stable drying performance in a stable manner according to the capacity of the tableware even when the ambient temperature cannot be accurately detected during continuous use of the dishwasher. .

Further, even when the program sequence is interrupted due to opening and closing of the door and the degree of temperature rise of the washing water cannot be accurately measured, it is always necessary to obtain a stable drying performance according to the capacity of the tableware. The purpose is.

Further, when the user uses the reservation function, the atmosphere temperature at the time of setting the reservation (or at the time of starting the program sequence) and the atmosphere temperature at the time of executing the remaining program sequence after the reservation waiting process The fourth object is to stably obtain a stable drying performance according to the capacity of the tableware even when the values are significantly different.

Further, even when the dishwasher is continuously used in a cold region, that is, when the atmospheric temperature cannot be accurately detected under the condition that the temperature difference between the inside and the outside of the washing tank is extremely large, the dishwashing can be stably performed. A fifth object is to obtain stable drying performance according to the capacity of the class.

[0015]

In order to achieve the first object of the present invention, the present invention provides a cleaning tank for storing dishes and a cleaning pump for ejecting cleaning water in the cleaning tank toward the dishes. A heater for heating the cleaning water in the cleaning tank, a temperature detecting means for detecting the temperature of the cleaning water in the cleaning tank, and a series of program sequences for cleaning, rinsing and drying the dishes. A control means is provided, and the control means calculates the time required for drying from the temperature detected by the temperature detection means immediately after the start of the program sequence and the degree of temperature increase detected by the temperature detection means. Is the first means for solving the problem.

Further, in order to achieve the second object, the control means of the first problem solving means has a unique meaning when the temperature detected by the temperature detection means immediately after the start of the program sequence exceeds a predetermined range. The second problem solving means is that the temperature to be detected is determined and the time required for drying is calculated from this temperature and the degree of temperature rise detected by the temperature detecting means.

In order to achieve the third object, in addition to the means for solving the first problem, there is provided an opening / closing door provided for loading and unloading the dishes into and from the washing tank, and the control means is for controlling the temperature. When the door is opened and closed while measuring the degree of temperature rise detected by the detection means, the degree of temperature rise detected by the temperature detection means is uniquely determined, and the degree of temperature rise and the program temperature immediately after the start of the program sequence A third problem solving means is that the time required for drying is calculated from the temperature detected by the temperature detecting means.

Further, in order to achieve the fourth object, in addition to the first problem solving means, the control means has a reservation function in the program sequence, and performs a process of waiting for a predetermined time after the program sequence is started. In this case, the control means is
A fourth problem solving means is that the time required for drying is calculated from the temperature detected by the temperature detecting means immediately after the end of the waiting process and the degree of temperature increase detected by the temperature detecting means. .

Further, in order to achieve the fifth object, in addition to the above-mentioned first problem solving means, a storage means for storing the temperature detected by the temperature detection means immediately after the start of the program sequence is provided, and the control means is Immediately after the start of the program sequence, if the temperature detected by the temperature detecting means exceeds a predetermined range set in advance, the temperature detected in the past stored in the storage means in advance is used to detect the temperature and the temperature detecting means. A fifth problem solving means is that the time required for drying is calculated based on the detected temperature rise.

[0020]

According to the first means for solving the above problems, the present invention provides:
The temperature detected by the temperature detection means immediately after the start of the program sequence is adopted as the ambient temperature, and the time required for drying is calculated from this temperature and the degree of temperature rise detected by the temperature detection means. Without having a dedicated peripheral circuit such as temperature detection means,
It is possible to always calculate the time required for drying according to the capacity of the tableware, without being affected by variations in the power supply voltage and the ambient temperature.

Further, according to the second means for solving the problems, even when the atmospheric temperature cannot be accurately detected during continuous use of the dishwasher, etc., the atmospheric temperature is uniquely determined, so that the tableware can be stably stored. The time required for drying can be calculated according to the capacity.

Further, by the third means for solving the problem, even when the program sequence is interrupted due to the opening and closing of the door and the like, and the degree of temperature rise of the washing water cannot be accurately measured, the temperature detected by the temperature detecting means is unique. Since the degree of rise is determined, it is possible to stably calculate the time required for drying according to the capacity of the tableware.

According to the fourth problem solving means, when the user uses the reservation function, the ambient temperature at the time of setting the reservation (or the time when the program sequence is started) and the remaining program sequence after the reservation waiting process Even when the ambient temperature at the time of executing is significantly different, the temperature detected by the temperature detecting means is adopted as the ambient temperature immediately after the end of the reservation standby process.
The time required for drying can be stably calculated according to the capacity of the tableware.

Further, by the fifth means for solving the problems, the ambient temperature cannot be accurately detected under the condition that the dishwasher is continuously used in the cold district, that is, under the condition that the temperature difference between the inside and the outside of the washing tank is extremely large. Even in this case, since the ambient temperature previously detected in the storage unit is used and this is adopted as the current ambient temperature,
The time required for drying can be stably calculated according to the capacity of the tableware.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. The same components as those of the above-mentioned conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the control means 13 controls a series of program sequences for the washing, rinsing and drying steps of the tableware 2, and the temperature detected by the thermistor (temperature detecting means) 8 immediately after the start of the program sequence. And the degree of temperature rise detected by the thermistor 8, that is, the temperature rise time in a predetermined temperature section, the time required for drying is calculated.

The operation of the above configuration will be described with reference to FIG. The series of sequential operations of the cleaning, rinsing, and drying process of the tableware 2 by the control means 13 are the same as in the conventional example, and therefore the description thereof will be omitted. The process of calculating the time required for drying according to the capacity of the tableware 2 will be described.

When the user stores the tableware 2 in the washing tank 1 and sets various program sequences to start the program sequence, the thermistor 8 is operated at step 21 in FIG.
Detects the temperature T1 in the cleaning tank 1. Since there is no residual water in the cleaning tank 1 and sufficient time has passed since the end of the previous program sequence, this temperature T1 can be treated as a temperature equivalent to the ambient temperature. When T1 is adopted as the ambient temperature T2, the cleaning and rinsing steps are processed in steps 23 and 24, and then the heating rinsing step is performed, and when a predetermined amount of water is supplied to the cleaning tank 1 in step 25, The cleaning pump 4 is operated at 26, and the heater 7 is operated at step 27.
Thus, the washing water is heated.

When the thermistor 8 detects the preset water temperature T3 in step 28, timer measurement is started in step 29, and when the thermistor 8 detects the preset water temperature T4 in step 30, the timer is started in step 31. The measurement time t is detected. The temperature rising section defined by the water temperature T3 and the water temperature T4 is relatively unaffected by the ambient temperature, and the timer measurement time t is greatly affected by the tableware amount and the heat generation capacity of the heater 7 caused by the power supply voltage. . That is, when the tableware amount is smaller than in the standard state or when the power supply voltage is higher than in the standard state, the timer measurement time t is short, and in the opposite case, the timer measurement time t is naturally long.

First, in step 32, the drying time tk is set to 20 minutes which is the time required for drying in the standard state, and
As shown in steps 33 to 36, the correction value according to the ambient temperature T2 is added to or subtracted from the drying time tk, and as shown in steps 37 to 40, the correction value according to the timer measurement time t is set to the drying time tk. A new drying time tk is calculated by addition and subtraction. When a predetermined temperature is detected by the thermistor 8 in step 41, the drainage process is performed in step 42, and the process proceeds to the drying process of step 43. In step 44, drying is performed until the above-described drying time tk elapses, and the program sequence Ends.

As a result, there is no dedicated peripheral circuit such as the power supply voltage detection means and the ambient temperature detection means, the variation of the power supply voltage and the influence of the ambient temperature are not affected, and the drying is always performed according to the capacity of the tableware 2. The time required for can be calculated.

In the above embodiment, the timing for detecting the timer measurement time t and the temperature threshold value and the number of corrections for correcting the drying time tk have been concretely shown. The means for doing so is not limited.

Next, a second embodiment of the present invention will be described. If the temperature detected by the thermistor 8 exceeds a preset predetermined range immediately after the start of the program sequence, the control means 13 in FIG. 1 uniquely determines the temperature to be detected, and this temperature and the predetermined temperature section detected by the thermistor 8 The time required for drying is calculated from the temperature rise time in the above. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 23 to 44 in FIG. 3 are the same as the operation of the first embodiment, so description thereof will be omitted.

When the program sequence starts, FIG.
In step 21 of, the thermistor 8 causes the temperature T in the cleaning tank 1 to rise.
1 is detected. If the temperature T1 is lower than the preset ambient temperature value that cannot be detected in step 45, the temperature T1 is adopted as the ambient temperature T2 in step 22, and the process proceeds to step 23. However, if the temperature T1 is higher than the value of the ambient temperature that cannot be normally detected preset in step 45, it is determined that the program sequence of this time has started shortly after the last program sequence was completed, that is, the temperature T1 is Since it cannot be adopted as the ambient temperature T2, the value of the ambient temperature T2 is uniquely determined at step 46, and the routine proceeds to step 23. After step 23, the drying time can be appropriately calculated by performing the same processing as in the first embodiment.

As a result, when the dishwasher is continuously used, even if the ambient temperature cannot be accurately detected, the ambient temperature is uniquely determined, so that stable drying according to the capacity of the dishes is required. The time can be calculated.

Next, a third embodiment of the present invention will be described. In FIG. 1, a door 14 is provided so as to be openable and closable in order to put the tableware 2 in and out of the cleaning tank 1.
When the door 14 is opened / closed during measurement of the temperature rise time in the predetermined temperature section detected by the thermistor 8, the control means 13 uniquely determines the temperature rise time in the predetermined temperature section detected by the thermistor 8, and the temperature rise The time required for drying is calculated from the time and the temperature detected by the thermistor 8 immediately after the start of the program sequence. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 21 to 29 and steps 32 to 44 in FIG. 4 are the same as the operation of the first embodiment, and therefore the description thereof is omitted.

In FIG. 4, step 47 is step 3 after starting timer measurement in step 29.
At 0, whether the door 14 is opened or closed is monitored until the thermistor 8 detects the preset water temperature T4. If the thermistor 8 detects the water temperature T4 without opening the door 14, the process proceeds to step 31. If the door 14 is opened and closed before the thermistor 8 detects the water temperature T4, the accurate timer measurement time cannot be detected.
Then, the value of the timer measurement time t is uniquely determined and the process proceeds to step 32. After step 32, the drying time can be appropriately calculated by performing the same processing as in the first embodiment.

As a result, even when the program sequence is interrupted due to the opening and closing of the door 14 and the degree of temperature rise of the wash water cannot be accurately measured, the temperature rise time in the predetermined temperature section detected by the thermistor 8 is uniquely set. Since the determination is made, it is possible to stably calculate the time required for drying according to the capacity of the tableware 2.

Next, a fourth embodiment of the present invention will be described. When the control means 13 in FIG. 1 has a reservation function in the program sequence and performs a process of waiting for a predetermined time after the start of the program sequence, the control means 13
The time required for drying is calculated from the temperature detected by the thermistor 8 immediately after the end of the waiting process and the temperature rise time in the predetermined temperature section detected by the thermistor 8. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 21 to 44 in FIG. 5 are the same as the operation of the first embodiment, so description thereof will be omitted.

When the user uses the reservation function and starts the program sequence after making the reservation setting, it is judged in step 49 whether the reservation setting has been made, and the remaining program is passed through the reservation waiting process by the reservation setting. When the sequence is executed, the ambient temperature before performing the reservation standby process and the ambient temperature after performing the reservation standby process may differ greatly, so the prewash process is terminated in step 50 and step 51 is performed. After the reservation waiting process is completed, the process proceeds to step 21 and the ambient temperature is detected. Step two
From 1 onward, the drying time can be appropriately calculated by performing the same processing as in the first embodiment.

As a result, when the user uses the reservation function, the atmosphere temperature at the time of setting the reservation (or at the time when the program sequence is started) and the atmosphere at the time when the remaining program sequence is executed after the reservation waiting process. Even if the temperatures are significantly different, the temperature detected by the thermistor 8 immediately after the end of the reservation waiting process is adopted as the ambient temperature, and therefore the time required for drying can be stably calculated according to the capacity of the tableware 2. You can

Next, a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the control means 15 stores the ambient temperature T2 calculated based on the temperature T1 detected by the thermistor 8 in the storage means 16, but when the temperature T1 exceeds a preset predetermined range, it is stored. The drying time is calculated using the atmospheric temperature T2 obtained in the past which is stored in the means 16 in advance. The storage means 16
Immediately after the start of the program sequence, the temperature detected by the thermistor 8 is stored.

The operation of the above configuration will be described with reference to FIG. Since steps 23 to 44 in FIG. 7 are the same operations as those in the first embodiment, the description thereof will be omitted.

When the program sequence is started, in step 21, the thermistor 8 detects the temperature T1 in the cleaning tank 1. When the temperature T1 is lower than the value of the ambient temperature which cannot be normally detected in advance in step 52, this temperature T1 is adopted as the ambient temperature T2 in step 22, and the ambient temperature T2 is stored in the storage means 16 in step 54.
, And the process proceeds to step 23. However, if the temperature T1 is higher than the ambient temperature value that cannot be normally detected in advance set in step 52, it is determined that the program sequence of this time is started shortly after the last program sequence is completed, that is, the temperature T1 is set to Since the ambient temperature T2 cannot be adopted as the ambient temperature T2, the previously obtained ambient temperature T2 previously stored in the storage means 16 at step 53 is adopted as the current ambient temperature, and step 23
Move to. After step 23, the drying time can be appropriately calculated by performing the same processing as in the first embodiment.

Thus, even when the dishwasher is continuously used in a cold area, that is, when the temperature difference between the inside and the outside of the washing tank 1 is extremely large, the storage temperature cannot be accurately detected. Since the ambient temperature previously detected in 16 is used and this is used as the current ambient temperature, it is possible to stably calculate the time required for drying according to the capacity of the tableware 2. .

In each of the above embodiments, the degree of temperature rise detected by the thermistor 8 is detected from the temperature rise time in the predetermined temperature section, but it is detected by the temperature rise value in the predetermined time. It goes without saying that it is good.

[0051]

As described above, according to the present invention, the washing tank for storing the dishes, the washing pump for ejecting the washing water in the washing tank toward the dishes, and the washing in the washing tank A heater for heating water, a temperature detecting means for detecting the temperature of the cleaning water in the cleaning tank, and a control means for controlling a series of program sequences for cleaning, rinsing and drying the dishes are provided, and the control is performed. Since the means calculates the time required for drying from the temperature detected by the temperature detection means immediately after the start of the program sequence and the degree of temperature rise detected by the temperature detection means, the temperature detection is performed immediately after the start of the program sequence. The temperature detected by the means is adopted as the ambient temperature, and the time required for drying is calculated from this temperature and the degree of temperature rise detected by the temperature detection means. Without having a dedicated peripheral circuit such as voltage detection means and atmosphere temperature detection means, it is possible to always calculate the time required for drying according to the capacity of the tableware, without being affected by variations in power supply voltage and atmosphere temperature. As a result, the expected drying performance can be stably obtained.

Further, when the temperature detected by the temperature detecting means exceeds the preset predetermined range immediately after the start of the program sequence, the control means uniquely determines the temperature to be detected, and this temperature and the temperature detecting means detect the temperature. Since the time required for drying is calculated from the degree of temperature rise to be performed, even when the ambient temperature cannot be accurately detected during continuous use of the dishwasher, the ambient temperature is uniquely determined. It is possible to stably calculate the time required for drying according to the capacity of the tableware, and thus it is possible to stably obtain the expected drying performance.

Further, the control means is provided with an opening / closing door provided for loading / unloading the dishes into / from the washing tank, and when the door is opened / closed while the degree of temperature rise detected by the temperature detection means is being measured, the control means is unique. Since the degree of temperature rise detected by the temperature detection means is determined, and the time required for drying is calculated from the degree of temperature rise and the temperature detected by the temperature detection means immediately after the start of the program sequence. Even if the program sequence is interrupted due to the opening / closing of the door and the degree of temperature rise of the wash water cannot be accurately measured, the degree of temperature rise detected by the temperature detection means is uniquely determined, so that the tableware can be stably maintained. It is possible to calculate the time required for drying according to the capacity of
As a result, the expected drying performance can be stably obtained.

Further, when the control means has a reservation function in the program sequence and carries out the process of waiting for a predetermined time after the start of the program sequence, the control device controls the temperature detected by the temperature detecting means immediately after the end of the waiting process. And the time required for drying is calculated from the degree of temperature rise detected by the temperature detecting means, so that when the user uses the reservation function, at the time of reservation setting (or when the program sequence is started). Even if the ambient temperature and the ambient temperature at the time of executing the rest of the program sequence after the reservation standby process are significantly different, the temperature detected by the temperature detection means immediately after the reservation standby process is adopted as the ambient temperature. In order to
It is possible to stably calculate the time required for drying according to the capacity of the tableware, and thus it is possible to stably obtain the expected drying performance.

Further, the control means is provided with a storage means for storing the temperature detected by the temperature detection means immediately after the start of the program sequence, and the control means has the temperature detected by the temperature detection means immediately after the start of the program sequence exceeds a predetermined range set in advance. In this case, since the temperature detected in the past which is stored in advance in the storage means is used and the time required for drying is calculated from this temperature and the degree of temperature rise detected by the temperature detection means, Even if the dishwasher is used continuously in the ground, that is, even if the ambient temperature cannot be accurately detected under conditions where the temperature difference between the inside and outside of the washing tank is extremely large, the past stored in the storage means in advance. The ambient temperature detected in the table is used as the ambient temperature this time, so that the tableware can be dried stably according to the capacity of the tableware. It is possible to calculate the time required,
As a result, the expected drying performance can be stably obtained.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a process of calculating a time required for drying the dishwasher.

FIG. 3 is a flowchart showing a process of calculating a time required for drying the dishwasher according to the second embodiment of the present invention.

FIG. 4 is a flowchart showing a process of calculating a time required for drying the dishwasher according to the third embodiment of the present invention.

FIG. 5 is a flowchart showing a process of calculating a time required for drying the dishwasher according to the fourth embodiment of the present invention.

FIG. 6 is a system configuration diagram of a dishwasher according to a fifth embodiment of the present invention.

FIG. 7 is a flowchart showing a process of calculating a time required for drying the dishwasher.

FIG. 8: System configuration diagram of a conventional dishwasher

[Explanation of symbols]

 1 Washing Tank 2 Tableware 4 Washing Pump 7 Heater 8 Thermistor (Temperature Detection Means) 13 Control Means

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Atsuhiro Tanaka 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hiroyuki Nakano 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A washing tank for storing dishes, a washing pump for ejecting washing water in the washing tank toward the dishes, a heater for heating the washing water in the washing tank, and the washing tank A temperature detection means for detecting the water temperature of the washing water in the inside, and a control means for controlling a series of program sequences for washing, rinsing and drying the dishes, the control means is provided with the temperature immediately after the start of the program sequence. A dishwasher configured to calculate the time required for drying from the temperature detected by the detection means and the degree of temperature rise detected by the temperature detection means. 2. The control means uniquely determines the temperature to be detected when the temperature detected by the temperature detection means exceeds a preset predetermined range immediately after the start of the program sequence, and this temperature and the temperature detection means detect the temperature. The dishwasher according to claim 1, wherein the time required for drying is calculated from the degree of temperature rise. 3. A door provided for opening and closing dishes to and from a washing tank is provided, and the control means is unique when the door is opened and closed while measuring the degree of temperature rise detected by the temperature detection means. The degree of temperature increase detected by the temperature detecting means is determined, and the time required for drying is calculated from the degree of temperature increase and the temperature detected by the temperature detecting means immediately after the start of the program sequence. Dishwasher according to 1. 4. The control means has a reservation function in the program sequence, and when performing a process of waiting for a predetermined time after the start of the program sequence, the control device detects the temperature detected by the temperature detection device immediately after the completion of the waiting process. The dishwasher according to claim 1, wherein the time required for drying is calculated from the degree of temperature rise detected by the temperature detection means. 5. A storage means for storing the temperature detected by the temperature detection means immediately after the start of the program sequence,
When the temperature detected by the temperature detection means exceeds a predetermined range set in advance immediately after the start of the program sequence, the control means uses the previously detected temperature stored in the storage means in advance and the temperature The dishwasher according to claim 1, wherein the time required for drying is calculated from the degree of temperature rise detected by the temperature detecting means.