CN109907714B - Washing heating control method and device of dish washing machine - Google Patents
Washing heating control method and device of dish washing machine Download PDFInfo
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Abstract
A washing heating control method and apparatus of a dishwasher, the method comprising: detecting and recording the temperature of washing water when entering a washing and heating process, and controlling a heater to start working; detecting the washing water temperature according to the specified interval time in the washing and heating process, and comparing the detected washing water temperature with the water temperature recorded at the previous time; if the current detected water temperature is lower water temperature, recording the lower water temperature and continuously detecting the washing water temperature according to the specified interval time, if the current detected water temperature is higher water temperature, judging that the last recorded water temperature is the lowest water temperature, starting heating timing, and detecting the washing water temperature when the preset time is reached; and judging whether the difference value between the detected washing water temperature and the lowest water temperature is greater than a preset temperature difference, if so, judging that a heater and a temperature detector of the dishwasher are normal, otherwise, judging that the heater and the temperature detector of the dishwasher are abnormal. The invention can not only improve the detection efficiency, but also avoid the misjudgment phenomenon which is easy to appear in the low-temperature environment.
Description
Technical Field
The invention relates to the technical field of dish washing machines, in particular to a washing heating control method and a washing heating control device of a dish washing machine.
Background
Since the dishwasher washes soiled dishes using high-temperature and high-pressure shower water and corresponding chemicals, the dishwasher is generally provided with a heater and a temperature detector. The heater and the temperature detector are required to detect during the washing process of the dishwasher. The conventional method is to determine whether the heater and the temperature detector are normal by determining whether the corresponding water temperature is reached within a preset heating time; the preset heating time is the washing heating sequence step time, and the whole judging process needs longer time. Patent document CN104706298B discloses a heating and washing control method of a dishwasher, which includes timing in real time when the dishwasher is in a heating and washing process, acquiring real-time water temperature, when the real-time water temperature is less than a preset water temperature value and the current timing time is greater than a preset heating time, judging whether the difference between the real-time water temperature and an initial water temperature value is greater than a temperature difference reference value, if not, indicating that a heater and/or a temperature detector is abnormal, immediately controlling the heater of the dishwasher to stop working, enabling the dishwasher to execute washing compensation operation, then controlling the dishwasher to execute a subsequent washing process, and sending a heating and temperature detection abnormal prompt when the washing process is finished; wherein the initial value of the water temperature is an initial temperature value of the washing water in the dishwasher when the dishwasher enters a heating washing course. The method compares the initial temperature value of the washing water with the real-time water temperature to judge whether the heater and/or the temperature detector is abnormal, however, when the temperature is low in winter and the dishwasher sprays the water into the cold inner cavity of the dishwasher, the water temperature of the inner cavity of the dishwasher can be reduced (as shown in figure 1), so that the misjudgment phenomenon is easy to occur, and further the wrong abnormal prompt, abnormal control and washing compensation operation are caused.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the related art and to providing a method and apparatus for controlling heating of a dishwasher.
In order to achieve the purpose, the invention adopts the following technical scheme:
a washing heating control method of a dishwasher, comprising the steps of:
s1, detecting and recording the temperature of the washing water when the dishwasher enters a washing and heating process, and controlling a heater to start working;
s2, detecting the washing water temperature according to the appointed time interval in the washing and heating process, and comparing the detected washing water temperature with the water temperature recorded at the previous time; if the current detected water temperature is lower water temperature, recording the lower water temperature and continuously detecting the washing water temperature according to the specified interval time, if the current detected water temperature is higher water temperature, judging that the last recorded water temperature is the lowest water temperature, and entering the next step;
s3, starting heating timing, and detecting the temperature of the washing water when the heating timing time reaches the preset time;
s4, judging whether the difference value between the washing water temperature detected in the step S3 and the lowest water temperature is larger than a preset temperature difference, if so, judging that a heater and a temperature detector of the dish washing machine are normal, otherwise, judging that the heater and the temperature detector of the dish washing machine are abnormal.
Further:
further comprising the steps of:
when it is determined in step S4 that there is an abnormality in the heater and the temperature detector of the dishwasher, corresponding abnormality processing is performed.
Further comprising the steps of:
when it is determined in step S4 that there is an abnormality in the heater and the temperature detector of the dishwasher, a corresponding abnormality alarm is issued.
Further comprising the steps of:
when it is determined in the step S4 that the heater and the temperature detector of the dishwasher are normal, the dishwasher is controlled to perform a subsequent washing course until the washing course is finished.
A washing heating control device of a dish washing machine comprises a main controller, a temperature detector and a heater, wherein the main controller is connected with the temperature detector and the heater;
when the dishwasher enters a heating washing process, the main controller detects and records the temperature of washing water through the temperature detector and controls the heater to start heating the washing water;
the main controller detects the temperature of the washing water through the temperature detector according to the specified interval time in the washing and heating process and compares the temperature with the previously recorded water temperature; if the currently detected water temperature is a lower water temperature, the main controller records the lower water temperature and continues to detect the washing water temperature according to the specified interval time, and if the currently detected water temperature is a higher water temperature, the main controller judges that the previously recorded water temperature is recorded as the lowest water temperature;
the main controller starts heating timing when judging that the last recorded water temperature record is the lowest water temperature, and detects the washing water temperature through the temperature detector when the heating timing time reaches the preset time;
and the main controller judges whether the difference value between the washing water temperature detected when the preset time is reached and the lowest water temperature is greater than the preset temperature difference, if the difference value is greater than the preset temperature difference, the heater and the temperature detector of the dish washing machine are judged to be normal, otherwise, the heater and the temperature detector of the dish washing machine are judged to be abnormal.
Further:
and when the main controller judges that the heater and the temperature detector of the dish washing machine are abnormal, the main controller controls and executes corresponding abnormal processing.
And when the main controller judges that the heater and the temperature detector of the dish-washing machine are abnormal, the main controller sends out corresponding abnormal alarms.
And when the main controller judges that the heater and the temperature detector of the dish-washing machine are normal, the main controller controls the dish-washing machine to execute a subsequent washing process until the washing process is finished.
The invention has the following beneficial effects:
the invention provides a washing heating control method and a washing heating control device of a dish washing machine, which can accurately and quickly judge whether a heater and a temperature detector of the dish washing machine have faults or not, improve the detection efficiency of the dish washing machine, and particularly can avoid the error judgment phenomenon easily occurring in a low-temperature environment.
The present invention reads the current washing water temperature through the appointed time interval in the washing heating process; the heating timing is started only when the lowest water temperature of the water temperatures is judged; the design completely eliminates the temperature drop factor caused by spraying water into the cold inner cavity and the tableware. The control method and the device are completely suitable for the actual operation condition of washing and heating of the dish-washing machine, solve the problems of overlong verification time, easy occurrence of misjudgment and the like when the existing dish-washing machine detects whether the heater and the temperature detector of the dish-washing machine have faults, are simple to realize, and can accurately and quickly detect and judge the faults of the heater and the temperature detector without increasing hardware cost.
Drawings
FIG. 1 is a washing heating temperature profile;
fig. 2 is a flowchart of a washing heating control method according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
Referring to fig. 2, in an embodiment, a washing heating control method of a dishwasher includes the steps of:
step S1, detecting and recording the temperature of the washing water when the dishwasher enters a washing and heating process, and controlling a heater to start working;
step S2, detecting the washing water temperature according to the appointed time interval in the washing heating process, and comparing the detected washing water temperature with the water temperature recorded in the previous time; if the current detected water temperature is lower water temperature, recording the lower water temperature and continuously detecting the washing water temperature according to the specified interval time, if the current detected water temperature is higher water temperature, judging that the last recorded water temperature is the lowest water temperature, and entering the next step;
step S3, starting heating timing, and detecting the temperature of the washing water when the heating timing time reaches the preset time;
and step S4, judging whether the difference value between the washing water temperature detected in the step S3 and the lowest water temperature is larger than a preset temperature difference, if so, judging that a heater and a temperature detector of the dish washing machine are normal, otherwise, judging that the heater and the temperature detector of the dish washing machine are abnormal.
In a more preferred embodiment, a washing heating control method of a dishwasher further includes the steps of:
and step S5, when the heater and the temperature detector of the dishwasher are judged to have abnormity in step S4, corresponding abnormity processing is executed.
In a more preferred embodiment, a washing heating control method of a dishwasher further includes the steps of:
and step S6, when the heater and the temperature detector of the dishwasher are judged to be abnormal in the step S4, corresponding abnormal alarms are sent out.
In a more preferred embodiment, a washing heating control method of a dishwasher further includes the steps of:
and step S7, when the heater and the temperature detector of the dishwasher are determined to be normal in the step S4, controlling the dishwasher to execute the subsequent washing process until the washing process is finished.
In another embodiment, a washing heating control device of a dishwasher comprises a main controller, a temperature detector and a heater, wherein the main controller is connected with the temperature detector and the heater;
when the dishwasher enters a heating washing process, the main controller detects and records the temperature of washing water through the temperature detector and controls the heater to start heating the washing water;
the main controller detects the temperature of the washing water through the temperature detector according to the specified interval time in the washing and heating process and compares the temperature with the previously recorded water temperature; if the currently detected water temperature is a lower water temperature, the main controller records the lower water temperature and continues to detect the washing water temperature according to the specified interval time, and if the currently detected water temperature is a higher water temperature, the main controller judges that the previously recorded water temperature is recorded as the lowest water temperature;
the main controller starts heating timing when judging that the last recorded water temperature record is the lowest water temperature, and detects the washing water temperature through the temperature detector when the heating timing time reaches the preset time;
and the main controller judges whether the difference value between the washing water temperature detected when the preset time is reached and the lowest water temperature is greater than the preset temperature difference, if the difference value is greater than the preset temperature difference, the heater and the temperature detector of the dish washing machine are judged to be normal, otherwise, the heater and the temperature detector of the dish washing machine are judged to be abnormal.
In a more preferred embodiment, the main controller controls the corresponding abnormal processing when judging that the heater and the temperature detector of the dishwasher are abnormal.
In a more preferred embodiment, the main controller sends out corresponding abnormal alarm when judging that the heater and the temperature detector of the dishwasher are abnormal.
And when the main controller judges that the heater and the temperature detector of the dish-washing machine are normal, the main controller controls the dish-washing machine to execute a subsequent washing process until the washing process is finished.
The washing heating control method and the washing heating control device of the dish washing machine can accurately and quickly judge whether the heater and the temperature detector of the dish washing machine have faults or not, improve the detection efficiency of the dish washing machine, and particularly can avoid the error judgment phenomenon which is easy to occur in a low-temperature environment.
The present invention reads the current washing water temperature through the appointed time interval in the washing and heating process, and starts the heating timing when the lowest water temperature of the water temperature is judged, and the design completely eliminates the temperature reduction factor caused by spraying the water temperature to the cold inner cavity and the tableware. The control method and the device are completely suitable for the actual operation condition of washing and heating of the dish-washing machine, solve the problems of overlong verification time, easy occurrence of misjudgment and the like when the existing dish-washing machine detects whether the heater and the temperature detector of the dish-washing machine have faults, are simple to realize, and can accurately and quickly detect and judge the faults of the heater and the temperature detector without increasing hardware cost.
The washing heating control method according to the embodiment of the present invention will be further described with reference to fig. 2.
As shown in fig. 2, the current water temperature value is obtained when the dishwasher enters a washing heating course, marked as Tmin; this step is labeled P1;
acquiring current water temperature at specified intervals in the washing and heating process, and marking the current water temperature as Tz; this step is labeled P2;
comparing the Tz value with the Tmin value, when the Tz value is smaller than the Tmin value, storing the Tz value into the Tmin, and repeating the step P2; this step is labeled P3;
when the Tz value is larger than the Tmin value, the dishwasher starts heating timing and continues washing and heating actions; when the heating timing time reaches a preset time value, reading the current washing water temperature and marking the current washing water temperature as Tz; then judging whether the difference value between the Tz and the Tmin is not less than a preset temperature difference value, if so, judging that a heater and a temperature detector of the dish washing machine are normal, and continuing the subsequent washing action; if not, judging that the heater and the temperature detector of the dish washer are abnormal, and entering subsequent corresponding abnormal treatment.
The washing heating control method can be executed once when the washing heating is carried out each time, and also can be executed once when the washing heating action is carried out for the first time, and the subsequent washing heating is not repeated any more.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and these substitutions and modifications should be considered to fall within the scope of the invention.
Claims (8)
1. A washing heating control method of a dishwasher, comprising the steps of:
s1, detecting and recording the temperature of the washing water when the dishwasher enters a washing and heating process, and controlling a heater to start working;
s2, detecting the washing water temperature according to the appointed time interval in the washing and heating process, and comparing the detected washing water temperature with the water temperature recorded at the previous time; if the current detected water temperature is lower water temperature, recording the lower water temperature and continuously detecting the washing water temperature according to the specified interval time, if the current detected water temperature is higher water temperature, judging that the last recorded water temperature is the lowest water temperature, and entering the next step;
s3, starting heating timing when the lowest water temperature is detected, and detecting the washing water temperature when the heating timing time reaches the preset time;
s4, judging whether the difference value between the washing water temperature detected in the step S3 and the lowest water temperature is larger than a preset temperature difference, if so, judging that a heater and a temperature detector of the dish washing machine are normal, otherwise, judging that the heater and the temperature detector of the dish washing machine are abnormal.
2. The washing heating control method of claim 1, further comprising the steps of:
when it is determined in step S4 that there is an abnormality in the heater and the temperature detector of the dishwasher, corresponding abnormality processing is performed.
3. The washing heating control method of claim 1 or 2, further comprising the steps of:
when it is determined in step S4 that there is an abnormality in the heater and the temperature detector of the dishwasher, a corresponding abnormality alarm is issued.
4. The washing heating control method of claim 1 or 2, further comprising the steps of:
when it is determined in the step S4 that the heater and the temperature detector of the dishwasher are normal, the dishwasher is controlled to perform a subsequent washing course until the washing course is finished.
5. A washing heating control device of a dish washing machine is characterized by comprising a main controller, a temperature detector and a heater, wherein the main controller is connected with the temperature detector and the heater;
when the dishwasher enters a heating washing process, the main controller detects and records the temperature of washing water through the temperature detector and controls the heater to start heating the washing water;
the main controller detects the temperature of the washing water through the temperature detector according to the specified interval time in the washing and heating process and compares the temperature with the previously recorded water temperature; if the currently detected water temperature is a lower water temperature, the main controller records the lower water temperature and continues to detect the washing water temperature according to the specified interval time, and if the currently detected water temperature is a higher water temperature, the main controller judges that the previously recorded water temperature is recorded as the lowest water temperature;
the main controller starts heating timing when judging that the last recorded water temperature record is the lowest water temperature, and detects the washing water temperature through the temperature detector when the heating timing time reaches the preset time;
and the main controller judges whether the difference value between the washing water temperature detected when the preset time is reached and the lowest water temperature is greater than the preset temperature difference, if the difference value is greater than the preset temperature difference, the heater and the temperature detector of the dish washing machine are judged to be normal, otherwise, the heater and the temperature detector of the dish washing machine are judged to be abnormal.
6. The washing heating control device of claim 5, wherein the main controller controls to perform corresponding abnormality processing when it is determined that the heater and the temperature detector of the dishwasher are abnormal.
7. A washing heating control device according to claim 5 or 6, wherein the main controller issues an abnormality alarm when it determines that the heater and the temperature detector of the dishwasher are abnormal.
8. A washing heating control device as claimed in claim 5 or 6 wherein the main controller controls the dishwasher to perform a subsequent washing course until the washing course is completed when it determines that the heater and the temperature detector of the dishwasher are normal.
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| CN114767023A (en) * | 2022-04-21 | 2022-07-22 | 佛山市百斯特电器科技有限公司 | Heating detection method and device for washing equipment and washing equipment |
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