CN111202437A - Method for monitoring water level of steam box - Google Patents
Method for monitoring water level of steam box Download PDFInfo
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- CN111202437A CN111202437A CN202010055526.5A CN202010055526A CN111202437A CN 111202437 A CN111202437 A CN 111202437A CN 202010055526 A CN202010055526 A CN 202010055526A CN 111202437 A CN111202437 A CN 111202437A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
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Abstract
A method for monitoring the water level of a steam box comprises the steps that the steam box comprises a steam generator; a water tank; a water pump; the method is characterized in that: the method comprises the following steps: starting a program; whether the electrode has water or not; the water pump pumps water from the water tank to the steam generator; prompting the user that the water quantity in the water tank is insufficient; the water pump pumps the water in the steam generator back into the water tank; detecting whether water exists by the electrode; the flag bit of the water inlet state is set to be 'finished', and the water quantity S of the water tank is calculated to be S1+ S2. The invention has the advantages that: through the effective combination of two kinds of parameter judgement of water level electrode and water pump electric current, not only can effectively detect whether the water tank has water, what of water level in the measurement water tank that can also be accurate is what, effectively reduces the steam ager cost, has guaranteed the degree of accuracy and the reliability of testing result.
Description
Technical Field
The invention relates to a steam box, in particular to a steam box water level monitoring method.
Background
The steam ager is a modern cooking equipment, and it cooks and evaporates the accent to food after mainly converting high temperature steam into with the water heating through the dish that generates heat, consequently, water storage tank and water installations are the essential part of steam ager. When the water quantity in the water tank is sufficient, water can be sent to the steam generator through the water inlet device in the cooking process, when a user starts cooking, the system can detect whether the water quantity in the water tank can finish the cooking or not in advance, if the water is insufficient, an immediate warning is needed, and the cooking failure caused by the fact that water cannot be added into the water tank in time in the cooking process is prevented.
At present, a steam box in the market can detect whether a water tank has water or not through an external component, for example, an invention patent 'an electric steam box water tank structure with water level warning prompt' previously applied by the inventor, with the patent number of 201010228249.X discloses an electric steam box water tank structure with water level warning prompt, which comprises a water storage tank and is characterized in that: the water storage tank is internally provided with a buoy for measuring the water level of the water storage tank, the buoy is provided with a magnet, a reed switch is arranged at a position corresponding to the magnet of the buoy, and the signal output end of the reed switch is connected with an external alarm circuit. Adopt the water tank tongue tube in this patent, through the inside magnet float of water tank and the test tube on the steam ager water tank groove, when magnet float and test tube were in same position, the switch in the magnet meeting actuation test tube, external circuit just can detect the signal.
However, the above prior art that adopts the reed switch mode to realize water level monitoring has the following problems: firstly, the reed switch is an extra part of the water tank and needs to be independently installed, so that the production cost of the steam box is additionally increased; secondly, the reed switch fails due to the fact that the floater magnet is adhered to the floater groove in the water tank in actual use, and therefore water level detection cannot be achieved; in addition, in practical application, in order to improve the heat efficiency and save water, the water consumption of the water tank is often determined according to each dish, and the reed switch can only be used for detecting whether the water tank is filled with water or not, but cannot quantitatively obtain the actual water quantity in the water tank.
Therefore, there is a need to further improve and improve the existing water level detection scheme of the water tank in response to the above problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a steam box water level monitoring method which can effectively reduce the detection failure rate on the basis of not increasing the cost aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for monitoring the water level of a steam box comprises
The steam generator is used for heating and converting water into steam;
a water tank for supplying water to the steam generator;
the water pump is used for controlling the water sucking and discharging amount, and the water pump sucks water from the water tank to the steam generator or sucks redundant water in the steam generator back to the water tank;
the method is characterized in that: the method for monitoring the water level of the steam box comprises the following steps:
step one, starting a program and carrying out initialization setting;
step two, detecting whether water exists by a water level electrode of the steam generator, if so, turning to step eight; if not, continuing the next step;
step three, measuring whether the water quantity mark position is 1, if so, returning water is finished, and turning to step fifteen; if not, continuing the next step;
step four, pumping water from the water tank into the steam generator by the water pump, wherein the water inlet time is TIntoStarting timing;
step five, judging the water inlet time TIntoWhether the time is greater than the set time t1, if yes, continuing to the next step; if not, returning to the fourth step; the set time t1 is the time when the water pump pumps water from the water tank into the steam generator until the water level electrode of the steam generator detects that water exists;
judging whether the current of the water pump is anhydrous current or not, and if so, executing the next step; if not, returning to the step two;
step seven, detecting whether water exists by a water level electrode of the steam generator, if so, returning to the step two; if not, prompting the user that the water quantity in the water tank is insufficient and water needs to be supplemented, and then returning to the step two;
step eight, judging whether the water inlet state flag bit of the steam generator is 'finished', if so, continuing to the next step; if not, turning to the step eleven;
step nine, the water in the steam generator is pumped back into the water tank by the water pump, and the pumping-back time T isGo back toTiming;
step ten, detecting whether water exists by a water level electrode of the steam generator, if so, returning to the step nine; if not, the water return is stopped, and the pumping-back time T is prolongedGo back toStopping timing, measuring the water quantity mark position 1, and returning to the step two;
step eleven, pumping water from the water tank into the steam generator by the water pump, wherein the water inlet time T isIntoStarting timing;
step twelve, judging whether the current of the water pump is anhydrous current, if so, continuing the next step; if not, returning to the step eleven;
thirteen step of judging water inlet time TIntoWhether the time is greater than the set time t2, if yes, continuing to the next step; if not, returning to the step eleven; the set time t2 is the time when the water tank is full of water, the water pump completely pumps out the water in the water tank;
step fourteen, setting the flag bit of the water inlet state as 'finished', and then returning to the step eight;
and step fifteen, calculating the water quantity S of the water tank to be S1+ S2, wherein S1 is the water quantity lower than the water level electrode in the steam generator, and S2 is the water pump backwater time TGo back toThe internal water pumping amount;
sixthly, judging whether the water quantity in the water tank is sufficient or not according to the water consumption required by the cooking options, if so, finishing the water level detection of the steam box, and switching to a normal cooking program; if not, prompting the user that the water quantity in the water tank is insufficient and water needs to be supplemented, and then returning to the step two.
The set time t1 is the time when the water pump pumps water from the water tank into the steam generator until the water level electrode of the steam generator detects water; preferably, the value range of t1 is t1 > S1/k, wherein S1 is the storable water amount between the root of the water level electrode and the bottom of the inner cavity of the steam generator, k is the water pumping amount of the water pump per second, once the steam generator is designed, the value of S1 is determined, the value of t1 can be adjusted according to different models of the water pump, and preferably, the value range of t1 is t1 > 25S.
The set time t2 is the time when the water tank is full of water, the water pump completely pumps out the water in the water tank; preferably, the value range of t2 is t2 > SIs full ofK, wherein S isIs full ofThe water level when the water tank is filled with water is determined, and the k is the water pumping amount of the water pump per second; the value of t2 is adjusted according to the model of the water tank and the water pump.
Preferably, the range of the pumping quantity k of the water pump per second is 10-10.5 ml/s, and the working parameters of the water pump are set as follows: the direct current voltage is 3-6V, the pressure is 1.2-3.8 Bar, and the suction distance is more than or equal to 1.5 mm.
Further preferably, the pumping current of the water pump in the water state is more than 0.26A, and the idle pumping current of the water pump in the water-free state is less than 0.13A.
Compared with the prior art, the invention has the advantages that: through the effective combination of two kinds of parameter judgement of water level electrode and water pump electric current, detect the water tank and have anhydrous state, adopt earlier steam generator water injection simultaneously, then the method of pumpback to the water tank comes the water level of final definite water tank, compare in prior art's detection method, not only can effectively detect the water tank whether have water, what of water level in the measuring water tank that can also be accurate, need not to increase water level sensing devices such as tongue tube and just can realize the measurement of making clear water level numerical value, can effectively reduce the steam box cost, simplify and measure the structure, the failure rate of detection has also been reduced simultaneously, the degree of accuracy and the reliability of testing result have been guaranteed.
Drawings
FIG. 1 is a control flow chart of a method for monitoring the water level of a steam box according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The embodiment discloses a method for monitoring the water level of a steam box, wherein the steam box comprises a steam generator, a water tank and a water pump, the steam generator is used for heating water and converting the water into steam, the steam generator is provided with a water level electrode, the water level electrode utilizes the conductive characteristic of the water, when the water in the steam generator contacts the water level electrode, the water level electrode detects a signal (water is judged), otherwise, the water level electrode cannot detect the signal (no water is judged); the water tank is used for supplying water to the steam generator; the water pump can absorb water from the water tank to the steam generator or absorb redundant water in the steam generator back to the water tank, and is mainly used for controlling the water absorption and drainage amount.
The steam box of this embodiment need not to set up water level detection device in addition (like reed switch etc.), mainly detects through steam generator's water level electrode and two kinds of signals of water pump current, realizes the measurement to the water tank water level.
As shown in FIG. 1, the method for monitoring the water level of the steam box of the embodiment comprises the following steps:
step one, starting a program and initializing.
Step two, detecting whether water exists by a water level electrode of the steam generator, if so, turning to step eight; if not, the next step is continued.
Step three, measuring whether the water quantity mark position is 1, if so, returning water is finished, and turning to step fifteen; if not, the next step is continued.
Step four, pumping water from the water tank into the steam generator by the water pump, wherein the water inlet time is TIntoAnd starting timing.
Step five, judging the water inlet time TIntoWhether the time is greater than the set time t1, if yes, continuing to the next step; if not, returning to the step four.
Judging whether the current of the water pump is anhydrous current or not, and if so, executing the next step; if not, returning to the step two.
Step seven, detecting whether water exists by a water level electrode of the steam generator, if so, returning to the step two; if not, prompting the user that the water quantity in the water tank is insufficient and water needs to be supplemented, and then returning to the step two.
Step eight, judging whether the water inlet state flag bit of the steam generator is 'finished', if so, continuing to the next step; if not, go to step eleven.
Step nine, steaming by a water pumpPumping the water in the steam generator back into the water tank for a period of time TGo back toAnd (6) timing.
Step ten, detecting whether water exists by a water level electrode of the steam generator, if so, returning to the step nine; if not, the water return is stopped, and the pumping-back time T is prolongedGo back toAnd stopping timing, measuring the water quantity mark position 1, and returning to the step two.
Step eleven, pumping water from the water tank into the steam generator by the water pump, wherein the water inlet time T isIntoAnd starting timing.
Step twelve, judging whether the current of the water pump is anhydrous current, if so, continuing the next step; if not, returning to the step eleven.
Thirteen step of judging water inlet time TIntoWhether the time is greater than the set time t2, if yes, continuing to the next step; if not, returning to the step eleven.
Step fourteen, setting the zone bit of the water inlet state as 'finished', and then, returning to the step eight.
And step fifteen, calculating the water quantity S of the water tank to be S1+ S2, wherein S1 is the storable water quantity between the root of the water level electrode and the bottom of the inner cavity of the steam generator, and S2 is the water pump backwater time TGo back toThe amount of water pumped in the water pump.
Sixthly, judging whether the water quantity in the water tank is sufficient or not according to the water consumption required by the cooking options, if so, finishing the water level detection of the steam box, and switching to a normal cooking program; if not, prompting the user that the water quantity in the water tank is insufficient and water needs to be supplemented, and then returning to the step two.
In the detection method of the embodiment, the set time t1 is the time from the water pump pumping water from the water tank into the steam generator until the water level electrode of the steam generator detects that there is water; the set time t2 is the time when the water tank is full of water, the water pump completely pumps out the water in the water tank;
setting the value range of t1 to be t1 > S1/k, and the value range of t2 to be t2 > SIs full ofK, wherein S1 is the storable water amount between the water level electrode root and the bottom of the steam generator cavity, SIs full ofThe water level when the water tank is filled with water, k is the water pumping amount of the water pump per second, and once the design of the steam generator is finishedModel selection of water tank, S1 and SIs full ofThe values of (A) are determined, and the values of t1 and t2 can be adjusted according to different water pump models.
The pumping current and the empty pumping current of the water pump have strict threshold ranges, the type of the water pump is selected to be Eddy R27-06N-06-500-2.0, and the working parameters are as follows: the direct current voltage is 3-6V, the pressure is 1.2-3.8 Bar, and the suction distance is more than or equal to 1.5 mm; therefore, the value range of the water pumping amount k of the water pump per second is 10-10.5 ml/s, the water pumping current of the water pump in a water state is more than 0.26A, and the air pumping current of the water pump in a water-free state is less than 0.13A; in the present embodiment, the pumping amount k of the water pump per second is maintained at 10ml/S, preferably, t1 is greater than 25S, and the values t1 is 30S, t2 is 120S, and S1 is 250 ml.
In this embodiment, when the water pump current is detected as the non-water current, the water pump current is also included in the abnormal condition except the condition that the water in the water tank or the steam generator has been pumped out by the water pump, and the abnormal condition of the water pump current is defined as: when the current of the water pump is detected to be the idle pumping current, the water pump is not actually in the idle pumping state, and only when the detected current value is abnormal, the water pump is still in the pumping state; in this case, it is possible to ensure that the water pump finishes pumping water by setting a continuous pumping time (the pumping time may be a maximum time for the water pump to completely pump the water in the water tank, such as t2, or a maximum time for filling the water into the steam generator until the water level electrode detects a water state, such as t 1).
When the cooking is started, whether water exists in the steam generator is judged according to the water level electrode, if no water exists, water in the water tank is injected into the steam generator through the water pump until the water level electrode detects a water existence state; if water exists, the water in the water tank is continuously filled into the steam generator until the water tank is drained; then, water is returned, namely water in the steam generator is pumped into the water tank until the water level electrode can not detect the water level, at the moment, water is stored between the root of the water level electrode and the bottom of the inner cavity of the steam generator, and the water storage amount, namely S1, can be predetermined according to signals of the steam generator; the amount of water returning to the water tank is S2, S2 equal to the pumping-back time TGo back toX water pump water pumping amount per second, can be oneDetermining the water quantity in the water tank according to the pumping-back time and the pumping quantity of the water pump per second, so that the total water storage quantity S of the water tank is obtained through calculation (S1 + S2) and the primary judgment of the water quantity in the water tank is finished; if the water quantity in the water tank is enough to finish cooking at this time (whether the water quantity in the water tank is enough is judged according to the water quantity required by each dish, and the water quantity in the water tank is more than the required water quantity), the steam box is switched to a normal cooking mode, otherwise, a user is reminded to add enough water until the water tank meets the water consumption required by cooking.
This embodiment is through the effective combination that two kinds of parameters of water level electrode and water pump electric current are judged, detect the water tank and have anhydrous state, not only can effectively detect whether the water tank has water, what the water level in the water tank of measurement that can also be accurate is how much, need not to increase water level sensing devices such as tongue tube and just can realize the measurement of making clear and definite water level numerical value, can effectively reduce the steam ager cost, simplify and measure the structure, also reduced the failure rate that detects simultaneously, guaranteed the degree of accuracy and the reliability of testing result.
Claims (5)
1. A method for monitoring the water level of a steam box comprises
The steam generator is used for heating and converting water into steam;
a water tank for supplying water to the steam generator;
the water pump is used for controlling the water sucking and discharging amount, and the water pump sucks water from the water tank to the steam generator or sucks redundant water in the steam generator back to the water tank;
the method is characterized in that: the method for monitoring the water level of the steam box comprises the following steps:
step one, starting a program and carrying out initialization setting;
step two, detecting whether water exists by a water level electrode of the steam generator, if so, turning to step eight; if not, continuing the next step;
step three, measuring whether the water quantity mark position is 1, if so, returning water is finished, and turning to step fifteen; if not, continuing the next step;
step four, pumping water from the water tank into the steam generator by the water pump, wherein the water inlet time is TIntoStarting timing;
step five, judging the water inlet time TIntoWhether the time is greater than the set time t1, if yes, continuing to the next step; if not, returning to the fourth step; the set time t1 is the time when the water pump pumps water from the water tank into the steam generator until the water level electrode of the steam generator detects that water exists;
judging whether the current of the water pump is anhydrous current or not, and if so, executing the next step; if not, returning to the step two;
step seven, detecting whether water exists by a water level electrode of the steam generator, if so, returning to the step two; if not, prompting the user that the water quantity in the water tank is insufficient and water needs to be supplemented, and then returning to the step two;
step eight, judging whether the water inlet state flag bit of the steam generator is 'finished', if so, continuing to the next step; if not, turning to the step eleven;
step nine, the water in the steam generator is pumped back into the water tank by the water pump, and the pumping-back time T isGo back toTiming;
step ten, detecting whether water exists by a water level electrode of the steam generator, if so, returning to the step nine; if not, the water return is stopped, and the pumping-back time T is prolongedGo back toStopping timing, measuring the water quantity mark position 1, and returning to the step two;
step eleven, pumping water from the water tank into the steam generator by the water pump, wherein the water inlet time T isIntoStarting timing;
step twelve, judging whether the current of the water pump is anhydrous current, if so, continuing the next step; if not, returning to the step eleven;
thirteen step of judging water inlet time TIntoWhether the time is greater than the set time t2, if yes, continuing to the next step; if not, returning to the step eleven; the set time t2 is the time when the water tank is full of water, the water pump completely pumps out the water in the water tank;
step fourteen, setting the flag bit of the water inlet state as 'finished', and then returning to the step eight;
step fifteen, calculating the water quantity S of the water tank to be S1+ S2, wherein S1 is the water levelThe water storage capacity between the root of the electrode and the bottom of the inner cavity of the steam generator is S2 the water return time T of the water pumpGo back toThe internal water pumping amount;
sixthly, judging whether the water quantity in the water tank is sufficient or not according to the water consumption required by the cooking options, if so, finishing the water level detection of the steam box, and switching to a normal cooking program; if not, prompting the user that the water quantity in the water tank is insufficient and water needs to be supplemented, and then returning to the step two.
2. The steam box water level monitoring method according to claim 1, characterized in that: the value range of t1 is t1 > S1/k, wherein k is the water pumping amount of the water pump per second.
3. The steam box water level monitoring method according to claim 1, characterized in that: the value range of t2 is t2 > SIs full ofK, wherein S isIs full ofAnd k is the water level when the water tank is filled with water, and the water pumping amount of the water pump per second.
4. A steam box water level monitoring method according to claim 2 or 3, characterized in that: the value range of the pumping quantity k of the water pump per second is 10-10.5 ml/s.
5. The steam box water level monitoring method according to claim 1, characterized in that: the pumping current of the water pump in a water state is more than 0.26A, and the idle pumping current of the water pump in a water-free state is less than 0.13A.
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| CN112006551A (en) * | 2020-08-05 | 2020-12-01 | 华帝股份有限公司 | Water box water quantity judgment control method |
| CN112155415A (en) * | 2020-09-14 | 2021-01-01 | 华帝股份有限公司 | Water box water quantity judgment control method |
| CN112932254A (en) * | 2021-01-28 | 2021-06-11 | 宁波方太厨具有限公司 | Water quantity detection structure and detection method for water tank of cooking equipment and electric steam box |
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| CN111202437B (en) | 2022-02-15 |
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