JP3500092B2 - dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] [0001] The present invention relates to a dishwasher.
You. [0002] 2. Description of the Related Art In a dishwasher, tap water is introduced into a washing cabinet.
And store it at the bottom of the cleaning cabinet, and operate the cleaning pump to store it.
Suction of retained water, jetting water vigorously from nozzle, cleaning
It is known that the dishes that are stored in the cabinet are washed.
Have been. The cleaning performance depends on the temperature of the water used for cleaning.
The hotter the water, the better the dirt
It is good and the time is short. Therefore, washing operation
During or during some rinsing operations (hereinafter referred to as "hot rinsing")
For example, use a heater installed at the bottom of the washing
Is heated to a predetermined temperature and washed with this warm water.
I do it. In recent years, the spread of hot water supply facilities
To supply hot water directly to the inside of the washing chamber for easy washing
It is also used. [0004] SUMMARY OF THE INVENTION However, the conventional
The dishwasher has the following problems. For example, luck
The user presses the pause button while the
To check the internal state
When the operation is restarted after closing the
The temperature is almost the same as the ambient temperature
While the water temperature has dropped to almost the same level,
Not. Then, the difference between the inside temperature and the water temperature was large.
As a result, high-temperature water is sprayed from the nozzles
The air in the washing chamber is suddenly
When heated, the air in the washing chamber expands rapidly. Swelling
The stretched air is a gap that communicates between the cleaning chamber and the outside of the chamber, for example,
From a narrow exhaust port provided above the front door, etc.
Attempts to escape to the outside at a stretch, with hot water along with air
Blows out to wet the surroundings,
May be. [0005] It should be noted that such a hot water blowing phenomenon is caused by cleaning.
Even if the temperature of the water in the chamber is not high, the temperature of the water in the cleaning chamber
Can occur when there is a large difference between
Therefore, it may occur in some cases other than the above example.
For example, when the inside of the washing cabinet is cold,
Try to start the washing operation by supplying hot water into the washing chamber
A similar phenomenon can occur when this is done. Furthermore, the first
During the rinsing process, the water heater is not
Cool water that is almost the same as water is supplied, and
After the temperature of the air in the washing
At the time of the passing process, the water heater is operated to supply hot water into the washing chamber.
When the water is drained, the difference between the inside temperature and the water temperature is large.
A similar phenomenon occurs immediately after the second rinse operation of
Easy to occur. [0006] As described above, the air blows from the exhaust port or the like.
The water that is discharged is not always hot water,
In order to express such a phenomenon easily,
Will refer to this phenomenon as the hot water blowing phenomenon. To solve such a problem, see, for example,
In the dishwasher described in JP-A-80332, during operation,
When the door is opened and closed, a certain period of time
Only the cleaning motor is intermittently driven, thereby cleaning from the nozzle.
Reduce the amount of water injected into the purifier and reduce the air in the purifier.
Avoids rapid expansion. [0008] However, such conventional dishwashing
When the door is opened and closed during operation, the
Intermittent drive is executed, and hot water blowing phenomenon occurs.
Even if there is no risk of kinking, water from the nozzle
Cleaning performance is reduced due to the reduced
There is a possibility that it will be. Also, as mentioned above, the door
Of hot water blow-out phenomenon that occurs only when the door is opened and closed
Can not respond. The present invention has been made to solve the above problems.
The purpose is to
The hot water blowing phenomenon due to the cause can be reliably prevented.
A dishwasher. [0010] Means for Solving the Problems The above-mentioned hot water blowing phenomenon is as follows.
Difference between the temperature of the air in the washing chamber and the temperature of the stored water
Occurs only if is large to some extent. Therefore, the present invention
The dishwasher according to
The possibility of hot water blowing phenomenon
And when the possibility of occurrence is high,
Reduces the amount of water flowing to prevent rapid air expansion
It is to control. That is, the present invention has been made to solve the above problems.
The dishwasher according to the first invention is provided with
Or store hot water,Washing, rinsing, high temperature rinsing
By executing the processWater or hot water nozzle
Tableware that cleans the dishes stored in the washing cabinet by spraying
In the washing machine, a) Press the water or hot water stored in the washing chamber onto the nozzle.
Water supply means for sending; b) Detect the temperature of water or hot water stored in the washing room
Temperature detecting means; c)Finish water supply during rinsing or hot rinsing
At the time before and after the operation of the water supply means starts, the temperature
The temperature detected by the detection means before and after the end of water supply one stroke before
Temperature is below a predetermined value and the temperature
When the temperature detected by the informing means is equal to or higher than a predetermined value,
Control the water supply means to reduce the amount of water supplied to the nozzle
DoOperation control means. In the dishwasher according to the first invention,, Send
The amount of water can be reduced to only one stage or multiple stages.
It may be something. Here, the water supply is reduced in several stages
If the water supply pressure is
It may be changed in several stages,
Change the reduction time in multiple steps
Is also good. [0013] [0014] [0015] [0016] [0017] [0018] [0019] [0020] Embodiments and effects of the present inventionWashing process, rinsing line
For example, in the water supply in each step of the high-temperature rinsing step, for example,
Cold water is supplied during the rinsing process, and
If hot water is supplied, the internal temperature is low and
The difference from the temperature may be large. Therefore, the first departure
In the dishwasher according to Ming, the operation control means
Based on the detection result of the water temperature at the time of water supply, the current inside temperature is estimated.
Measured and the temperature is below the specified value and
If the known water temperature is higher than the predetermined value,
Judging that there is a high possibility that the difference from the temperature is large,
Control the water supply means to reduce the amount of water supply. The amount of water
If it decreases, even if hot water is sprayed from the nozzle,
The amount of heat transferred from the hot water to the air in the washing chamber
Thus, rapid expansion of the air is suppressed. Therefore, on the way
From the start of hot water supply into the washing chamber
Even when the hot water blowing phenomenon may occur
In addition, it can be reliably prevented. [0021] [0022] [0023] [0024] [0025] [0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, one embodiment of the first invention (hereinafter referred to as "actual
Dishwasher according to "Example 1") with reference to FIGS.
I will explain. FIG. 1 shows the overall structure of a dishwasher according to this embodiment.
It is a side sectional view showing composition. Drying room inside machine frame 1
A washing cabinet 2 which is also used is disposed, and is provided at an opening on the front surface of the washing cabinet 2.
The door 3 whose lower end is pivotally supported is in the forward direction (see FIG. 1).
(In the direction of arrow P). Washing
A plurality of nozzles 5 are formed on the upper surface in the center of the bottom of the warehouse 2.
A rotatable arm 4 is provided. In addition, washing room
At the bottom of 2, a circulation port 7 and a drain port 8 are provided on the side.
Water tank 6 is provided in communication with the upper surface of the water tank 6.
Include a method for collecting residual vegetables that have run down from tableware.
A brush-like filter 9 is provided. Below the bottom of the washing chamber 2 is a washing and drainage pump.
Is disposed. Cleaning and drainage pump 10
The propeller is designed to rotate in both left and right directions.
The impeller rotates in a predetermined direction to store water.
The water sucked from the circulation port 7 of the tank 6 is sent to the arm 4
On the other hand, during drainage, the impeller rotates in the opposite direction,
Through the drain hose 11
Discharge to the outside. Supplied from outside through the water supply valve 12.
The drained water is supplied from a water supply port 13 provided behind the washing chamber 2.
It is poured into the washing chamber 2. Behind washing room 2 inside washing room 2
Water level with float (not shown) for detecting water level
A detection chamber 14 is provided, and water in the cleaning chamber 2 is shown in FIG.
The water also flows into the water level detection chamber 14 through the communication port. Ma
The circumference of the rotation axis of the arm 4 is large at the bottom of the washing chamber 2.
Circulate, warm washing water and rinsing water and dry
Has a loop shape for increasing the temperature of the air in the washing chamber 2.
A heater 15 is provided. Further, the fan motor 1
A blower fan 16 that is driven to rotate by the
Formed on the back of the machine frame 1 when the blower fan 16 is rotated.
The outside air sucked from the suctioned air inlet 18 enters the washing chamber 2
Is introduced. In addition, the humid air in the washing chamber 2 is
It is discharged to the outside through an exhaust port 19 provided at the top.
You. FIG. 2 shows the dishwasher installed below the door 3.
FIG. 3 is a plan view of the operation panel 20 being cut. This operation
The panel 20 has a power switch 21 and a start key 2
2. A course selection key 23 and a hot water supply switching key 24 are provided.
And a plurality of indicator lights 2 indicating the selected course
5. Display 26 for displaying the remaining time as a numerical value
An indicator light 27 is provided to indicate the selection of hot water or water supply.
The start key 22 also serves as a pause key,
When the start key 22 is pressed during operation, operation is performed at that time.
Is temporarily stopped, and the start key 22
When is pressed, operation restarts from the point where it was interrupted earlier.
It is designed to open. FIG. 3 is an electric diagram showing the main parts of the dishwasher according to this embodiment.
FIG. The control unit 30 includes a CPU 31 and a ROM 3
2. Microcomputer including RAM 33, timer 34, etc.
And a ROM 32.
Control programs for performing such operations are stored.
You. The CPU 31 performs various calculations according to the control program.
The functions described below are achieved by executing the processing.
The control unit 30 has a power switch provided on the operation panel 20.
Key 21, start key 22, course selection key 23, etc.
Operation signal is input and stored at the bottom of the washing chamber 2.
From the temperature sensor 35 that detects the temperature of the water
A signal is input. The control unit 30
Causes the display 26 to perform a predetermined display, and
The buzzer 36 sounds as necessary. Further, the control unit 30
Is connected to the water supply valve 12, the cleaning and drainage via the load driving unit 37.
Pump motor 101 and fan motor 17 of pump 10
Control the operation of. FIG. 4 shows the flow of the entire stroke in the dishwasher.
Fig. 5 shows the operation of the standard course.
Of change in temperature detected by temperature sensor 35 at the time
FIG. In the example shown in FIG.
When water is supplied, water with a water temperature of about 20 ° C is supplied
And Referring to FIG. 4 and FIG.
The operation will be schematically described. The user eats in a tableware basket (not shown)
Store the utensils, open the door 3 and place the tableware in the washing room 2
Install. When operation start is instructed by a predetermined operation,
First, a washing process is performed (step S1). Specifically
Means that the water supply valve 12 is opened by an instruction from the control unit 30
A predetermined amount of water is stored at the bottom of the washing chamber 2. Water supply end
Later, when the cleaning and drainage pump 10 is driven, the cleaning and draining is performed.
The pump 10 draws water from the circulation port 7 of the water tank 6 and
4. The water flies more vigorously than the small nozzle 5
The arm 4 is rotated by the recoil of the water jet. injection
Spilled water hits the tableware and flows down to the bottom of the washing cabinet 2,
Solid matter is removed by the filter 9 and circulated to the water storage tank 6.
You. During this washing operation, the heater 15 is energized and stored.
The retained water is heated by the heater 15 and its temperature
The degree rises almost linearly as shown in FIG. When the water temperature reaches a predetermined temperature (in this example, 58 ° C.)
When it reaches, the washing operation is terminated and the washing and drainage pump 10
Is driven to function as a drainage pump,
Discharges the water sucked from the drain port 8 into the drain hose 11
You. Next, a rinsing step is performed (step
S2). Specifically, as in the washing process, the water supply valve 12
It is opened and clean water for rinsing is newly added to the washing room 2
Will be introduced. At this time, the heater 15 is not operating.
However, the water introduced into the washing chamber 2 by the residual heat is
Become. Then, as in the case of the cleaning operation, the cleaning and drainage pump 1 is used.
0 is driven to function as a washing pump, and about 1 minute
Rinsing operation is performed, and then the water in the washing chamber 2
Is discharged. In this example, such a rinse is repeated three times
(Steps S2a, 2b, 2c). Thereafter, a high-temperature rinsing step is performed as a final rinse.
Is executed (step S3). Specifically, the washing process
The water supply valve 12 is opened as in the case of the
Fresh water is newly introduced into the washing chamber 2. Cleaning after water supply
The drainage pump 10 is driven to function as a washing pump.
Be moved. In addition, the heater 15 is driven to store the stored water.
Temperature rises with continued operation. Water temperature is the specified temperature
When the temperature reaches (70 ° C in this example), the high-temperature rinsing operation ends.
Is done. Perform the final rinsing step using hot water in this way
This can sterilize tableware and warm the tableware.
Therefore, quick drying can be performed in the next drying step. Hot soot
After the drainage, the water remaining at the bottom of the washing chamber 2 is discharged, and the
The outside air is sent into the washing chamber 2 by rotating the
The tableware is dried by heating the air with the heater 15.
(Step S4). In this dishwasher, the hot water blowing
In order to prevent the discharge phenomenon,
From the start point to the end point of the high-temperature rinsing step of step S3
In the meantime, the temperature detected by the temperature sensor 35 was used.
The drive control process of the pump motor 101 is repeatedly executed.
You. FIG. 6 is a flowchart showing this processing. Less than
In accordance with this flowchart, the hot water blowing phenomenon is prevented.
The process for stopping will be described. First, this dishwasher is shown in FIG.
Washing, rinsing and hot rinsing
At the end of the water, the control unit 30 sends a detection signal from the temperature sensor 35.
And read it into RAM 33 as water temperature data
Store temporarily. When the execution of the processing shown in FIG.
The control unit 30 includes a washing process, a rinsing process, or a high-temperature rinsing process.
Is determined immediately after the end of water supply in any of the steps
(Step S10). It is determined that it is not immediately after the end of water supply
To resume operation after the next suspension.
It is determined whether or not it is immediately after the start key 22 is pressed.
(Step S11). Judged not immediately after resumption of operation
Then, the process proceeds to step S19 described below. Normally, one
The stop is performed when the door 3 needs to be opened and closed.
Therefore, when operation is resumed after a pause,
As a result of the opening and closing of the door 3 by the user,
The temperature of the air inside is almost up to the ambient temperature (about 20 ° C)
It may be down. So, go to step S14
And proceed. Immediately after the end of water supply in step S11.
If it is determined that the process at that time is
It is determined whether it is a process (step S12), and washing is performed.
If this is the case, skip step S13 and go to step
Proceed to step S14. This is because the washing process is the most
Because it is the first process, there is a preceding process described below
This is because the determination in step S13 is meaningless.
If not a washing cycle, ie a rinsing cycle or a hot rinse
If it is a process, the first
Read the water temperature data at the end of the water supply in the line process, and
Is lower than 30 ° C. (step S1).
3). The preceding process is, for example, the first rinsing process
Is the washing step, the third rinsing step in the case of the high-temperature rinsing step
In the flowchart shown in FIG.
Refers to the process executed one time ago. Particularly in the rinsing process, the water supply of the preceding process
The water temperature data at the time of termination was used to estimate the current inside temperature.
Used for That is, during the rinsing process, the heater 1
5 is not heated, so it is stored in the washing chamber 2.
The sprayed water is sprayed from the nozzle 5 to provide a cleaning chamber.
The temperature of the air in 2 and the temperature of the water are close. For example,
If hot water is supplied during the process, use the hot water
The temperature inside the refrigerator increases by performing the operation. This high
Does the temperature in the refrigerator not drop much when water is supplied in the next process?
At this time, at the start of operation of the pump in the next stroke,
It can be assumed that the temperature is high. On the other hand, in the preceding process
If tap water is supplied, operation using that water
Rows lower the internal temperature. This low internal temperature is
Even if hot water is supplied when supplying water during
Therefore, the temperature in the refrigerator is kept low. But
Therefore, the water temperature at the end of the water supply in the preceding process is 30 ° C. or higher.
If so, can you assume that the temperature inside the chamber is also relatively high?
In other words, in other words, the difference between the water temperature and the internal temperature is relatively small.
Can be determined. Therefore, in this case,
The process proceeds from step S13 to S19. Immediately after the restart of operation in step S11.
Is determined, the washing process is performed in step S12.
If it is determined that the
If it is determined that the water temperature of the process is lower than 30 ° C.,
The control unit 30 detects the temperature detected by the temperature sensor 35 at that time.
The read water temperature T is read (step S14), and the water temperature T becomes 3
It is determined whether the temperature is lower than 0 ° C. (step S15).
If the water temperature T is lower than 30 ° C.,
Even so, the difference between the water temperature and the inside temperature is small,
Judging that there is no danger of hot water blowing out,
Proceed to step S19. In the above step S15, the water temperature T is 30 ° C. or less.
If it is determined that the temperature is above, then the water temperature T is below 40 ° C.
It is determined whether or not it is (step S16). Where water temperature T
Is determined to be less than 40 ° C., the water temperature T becomes 3
It should be in the range of 0 ° C or more and less than 40 ° C. in this case,
The hot water blowing phenomenon occurs with the driving of the washing and drainage pump 10.
Although it may occur, the difference between the water temperature and
Since the step is not large, the phenomenon can be resolved in a relatively short time.
Can be determined. Therefore, the intermittent operation request flag F is set
Set to 1 and set the number of intermittent repetitions to 5
(Step S17). On the other hand, at the step S16, the water temperature T becomes 4
If it is determined that the temperature is 0 ° C or more, the difference between the water temperature and the temperature in the refrigerator
And the hot water blowing phenomenon may last for a relatively long time.
Can be determined. Therefore, the intermittent operation request flag F is set
1 and the number of intermittent repetitions P
Set to 10 larger than 17 (step S1
8). The above processing contents can be summarized as follows:
Hot water blowing phenomenon may occur immediately after the start of the process.
If there is, step S10 → S12 → S14 → S1
The process proceeds from 5 to S16 to S17 or S18, and intermittent operation
The request flag F is set to 1 and the intermittent repetition
The number P is set to 5 or 10. Also, temporarily while driving
The hot water is stopped immediately after the operation is restarted.
If there is a possibility that a blowing phenomenon may occur, step S
10 → S11 → S14 → S15 → S16 → S17 or S
The processing proceeds to step 18, and the intermittent operation request flag F is set to 1.
And the number of intermittent repetitions P is set to 5 or 10.
Is done. Furthermore, cold water is supplied in the preceding process,
Hot water supply due to hot water being supplied during the next stroke
If there is a possibility that the phenomenon occurs, step S1
0 → S12 → S13 → S14 → S15 → S16 → S17
Alternatively, the processing proceeds to S18, and the intermittent operation request flag F is set to 1
Set, and the number of intermittent repetitions P becomes 5 or 10.
Set. Next, the control unit 30 sets the intermittent operation request flag
It is determined whether or not F is 1 (step S19),
When the operation request flag F is not 1, that is, when it is 0
The pump motor 101 is driven as usual (step
Step S21). The driving at this time is performed, for example, by the motor 101.
Is a continuous operation. In step S19, the intermittent operation request flag F
Is 1, one cycle is on for 0.2 seconds-1.
The pump motor 101 is intermittently driven with 0 second off (step
S20). Then, such an intermittent drive is performed in the above step.
Executes the number of repetitions P determined in step S17 or S18
Is determined (step S22), and the number of repetitions P
If not, just go to the main loop
Return. If the intermittent drive cycle is repeated the number of times P,
Proceeding from step S22 to step S23, the intermittent operation request flag
After resetting F to 0, the process returns to the main loop. With the above processing, step S17
If the number of intermittent repetitions P is set to 5 at 0, 0.
Intermittent drive of 2 seconds on-1.0 seconds off is repeated 5 times
You. During such an intermittent drive period,
The pressure of the water that is sprayed drops
As the amount decreases, the speed of the self-propelled rotation of the arm 4 also decreases.
Become. Therefore, it is ejected from the nozzle 5 for about 6 seconds.
The momentum of the water continues to be weak, and then the normal injection
Return to If the amount of injected water is small, the water in the washing
Because the amount of heat transferred to the air is small, the temperature of the air in the
The temperature rise becomes slow, and as a result, hot water from the exhaust port 19
The blowing is avoided. Also, intermittent repetition is performed in step S18.
When the number of times P is set to 10, 0.2 seconds on
-Intermittent driving for 1.0 second off is repeated 10 times, and
The momentum of the water injected from the nozzle 5 is weak for a second.
Continue. Therefore, the difference between the water temperature and the internal temperature is extremely large.
Even when large, rapid air expansion is unlikely to occur
Therefore, the hot water blowing phenomenon can be avoided. Next, an embodiment of the second invention (hereinafter referred to as "
Example 2 "). Above implementation
In Example 1, the storage is based on the temperature detected by the only temperature sensor 35.
Although the inside temperature was estimated, the dishwashing of Example 2 was performed.
In a washing machine, a position where water is not stored in the washing
Preferably a position where the water injected from the nozzle 5 does not splash
To detect the temperature of the air in the cleaning chamber 2
And another temperature sensor (this is referred to as "second temperature sensor"
A sensor that detects temperature is referred to as a "first temperature sensor."
Have been. The first and second temperature sensors determine the water temperature.
And the inside temperature can be measured simultaneously. FIG. 7 shows heat in the dishwasher of the second embodiment.
Flowchart showing processing to prevent hot water blowing phenomenon
It is. The processing contents other than the part surrounded by the dotted line are shown in FIG.
The description is omitted because it is the same as the first embodiment shown. When the execution of this processing is started, the control unit 3
0 is the first temperature sensor and the second temperature sensor respectively.
The detected water temperature Ta and the inside temperature Tb are read (step
Step S30). After that, washing process, rinsing process or high temperature
It is determined whether or not the water supply in the rinsing process has just finished (see
Step S31). If it is determined that it is not immediately after the end of water supply,
Next, it is determined whether or not the operation has just been resumed after the suspension.
(Step S32), it is determined that the operation is not immediately after the restart.
And proceeds to step S19. If it is immediately after the end of water supply in step S31,
If it is determined, or immediately after the operation is restarted in step S32
If it is determined that it is later, the inside temperature Tb and the water temperature Ta
And determine whether the difference is less than 25 ° C
(Step S33). If the difference is less than 25 ° C
If there is no fear of the hot water blowing phenomenon,
Proceed to S19. Judgment that the above temperature difference is 25 ° C or more
Then, it is determined whether the temperature difference is less than 35 ° C.
A determination is made (step S34). Here the temperature difference is less than 35 ° C
If it is determined that the temperature is full, the temperature difference is 25 ° C or less.
It should be in the range below 35 ° C. In this case,
There is no possibility of hot water blowing with the drive of the drain pump 10.
However, it is judged that the balloon will fit in a relatively short time.
Can be turned off. Therefore, the intermittent operation request flag F is set to 1.
And set the number of intermittent repetitions P to 5 (step
Step S35). On the other hand, in step S34, the temperature difference is 35 ° C.
In the case above, the hot water blowing phenomenon continues for a relatively long time
It can be determined that there is a possibility. Therefore, the intermittent operation request
The flag F is set to 1 and the number of intermittent repetitions P is
It is set to 10 (step S36). Like this
Once the number of intermittent repetitions P has been determined,
Proceeding to step S19 and subsequent steps,
Perform the action. In the dishwasher according to the second embodiment,
Add a temperature sensor to measure the temperature inside the refrigerator
Although it is necessary, the conditions under which hot water
Can be grasped more accurately,
The hot water blowing phenomenon can be prevented
Washing and draining under conditions that do not cause blowout
Unnecessary because the operation of the pump 10 is maintained in a normal state.
There is no danger of lowering the cleaning ability. In the second embodiment, two temperature sensors are provided.
However, as in the first embodiment, the only
Detects the temperature inside the chamber and the water temperature using the temperature sensor of
The temperature difference between the inside temperature and the water temperature is determined and the temperature difference is determined as in the second embodiment.
Alternatively, the determination process may be performed first. That is,
Immediately before the start of water supply in any process, the bottom of the washing chamber 2
Has no water stored in it, and the temperature sensor
It is exposed. Therefore, check the temperature in that state.
If you know it, it can be regarded as measuring the temperature inside the chamber
You. The above embodiment is an example, and the present invention
It is clear that modifications and changes can be made as appropriate within the scope of
It is. For example, the injection of water from the nozzle 5 is started.
In this case, the method of reducing the amount of water supply is the method of the first and second embodiments.
Not limited to That is, in the first and second embodiments, the pump module
Data 101 intermittently for 0.2 seconds on-1.0 seconds off
And the off-time is long in such an intermittent drive.
Therefore, the inertia rotation of the motor 101 is stopped during the off period, and
The injection of water from the spill 5 is temporarily stopped. Accordingly
Therefore, not only does the jet pressure of water from the nozzle 5 weaken,
The shooting itself becomes intermittent. However, relative off-time
If the water jet is short enough,
The amount of radiation can be reduced. Also, the pump motor
Rotational speed can be controlled by inverter drive, etc.
In some cases, reduce the rotation speed instead of intermittent drive.
You can do it. In addition, the rotation speed of the pump motor can be controlled.
In the case of, start with a very low rotation speed
To minimize the amount of water injection and gradually increase the rotation speed.
I will increase the amount of water injection by increasing the degree
You may do it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional side view showing an entire configuration of a dishwasher according to an embodiment (Embodiment 1) of the first invention. FIG. 2 is a plan view of an operation panel of the dishwasher according to the first embodiment. FIG. 3 is an electrical configuration diagram of the dishwasher according to the first embodiment. FIG. 4 is a flowchart showing the flow of all steps in the dishwasher of the first embodiment. FIG. 5 is a graph showing an example of a change in a detected temperature when a standard course operation is performed. FIG. 6 is a flowchart of hot water blowing prevention processing in the dishwasher according to the first embodiment. FIG. 7 is a flowchart of hot water blowing prevention processing in a dishwasher according to an embodiment (Embodiment 2) of the second invention. [Description of Signs] 2 ... Washing cabinet 5 ... Nozzle 6 ... Water tank 10 ... Washing / draining pump 101 ... Pump motor 12 ... Water supply valve 22 ... Start key 30 ... Control unit 35 ... Temperature sensor 37 ... Load driving unit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazutaka Nakanishi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP 4-183428 (JP, A) JP JP-A-7-88074 (JP, A) JP-A-9-38602 (JP, A) JP-A-62-282683 (JP, A) JP-A-63-95569 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) A47L 15/46

Claims (1)

(57) [Claims] [Claim 1] Water or hot water is stored in the bottom of the washing chamber and washed.
By performing a run, rinse, and hot rinse
A dishwasher for spraying stored water or hot water from a nozzle to wash dishes stored in a washing chamber; a) a water supply means for pressure-feeding the water or hot water stored in the washing chamber to the nozzle; B) temperature detecting means for detecting the temperature of the water or hot water stored in the washing chamber; andc) terminating the water supply during the rinsing step or the high-temperature rinsing step.
At the time before and after the operation of the water supply means starts, the temperature
The temperature detected by the detection means before and after the end of water supply one stroke before
Temperature is below a predetermined value and the temperature
When the temperature detected by the informing means is equal to or higher than a predetermined value,
Control the water supply means to reduce the amount of water supplied to the nozzle
A dishwasher, comprising: