CN117941968A - Pulping control method of liquid heater for air separation detection - Google Patents
Pulping control method of liquid heater for air separation detection Download PDFInfo
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- CN117941968A CN117941968A CN202410347205.0A CN202410347205A CN117941968A CN 117941968 A CN117941968 A CN 117941968A CN 202410347205 A CN202410347205 A CN 202410347205A CN 117941968 A CN117941968 A CN 117941968A
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- 238000001514 detection method Methods 0.000 title claims abstract description 189
- 238000004537 pulping Methods 0.000 title claims abstract description 157
- 239000007788 liquid Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000000926 separation method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 301
- 230000002265 prevention Effects 0.000 claims abstract description 152
- 239000011521 glass Substances 0.000 claims abstract description 35
- 239000003990 capacitor Substances 0.000 claims description 110
- 238000010438 heat treatment Methods 0.000 claims description 53
- 239000002002 slurry Substances 0.000 claims description 38
- 230000008569 process Effects 0.000 claims description 28
- 210000001061 forehead Anatomy 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 12
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- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 235000013305 food Nutrition 0.000 description 37
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- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
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- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000035622 drinking Effects 0.000 description 2
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- 235000021478 household food Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to a control method of kitchen appliances, in particular to a pulping control method of a liquid heater for air-separation detection, wherein a detection plate of the liquid heater is provided with a plurality of capacitance pole pieces for air-separation detection of water level signals and overflow prevention signals along the height direction, the capacitance pole pieces at the upper part of the detection plate are used as overflow prevention judgment positions for detecting different overflow prevention heights, the initial water level of the liquid heater added into a glass container for the current pulping is detected through the capacitance pole pieces at the lower part of the detection plate, the capacitance pole pieces corresponding to the detection overflow prevention signals at the upper part of the current pulping detection plate are determined according to the initial water level and the preset corresponding relation, and the capacitance pole pieces at the upper part of the detection plate are used as the initial overflow prevention judgment positions for the current pulping for the pulping operation. By adopting the method, different initial water levels can be used for pulping with different initial overflow prevention judgment positions, the pulping efficiency is improved, the manufacturing period can be shorter, the energy is saved, the overflow prevention reliability and the intelligent degree are higher, and the user experience is remarkably improved.
Description
Technical Field
The invention relates to a control method of kitchen appliances, in particular to a pulping control method of a liquid heater for detecting a space.
Background
A liquid heater or food processor for making beverage such as soybean milk, rice gruel, tremella soup, etc. like CN200920050366.4, CN200910040598.6, etc. generally set up the anti-overflow signal that outwards convex anti-overflow electrode pole is used for detecting the thick liquid foam on aircraft nose or cup or bowl cover, prevent the problem that the thick liquid overflowed in-process of slurrying. On the one hand, the anti-overflow electrode rod is exposed outside the machine, has a cleaning dead angle and is not easy to clean; on the other hand, the anti-overflow electrode rod is generally arranged below the cup opening, is relatively close to the cup opening, and can play a good role in making slurry drinks with relatively high water level, but when the pulping water level is low, although different pulping programs can be selected for pulping, the anti-overflow electrode rod is far away from the cup bottom, enough pulp can be generated only after being heated for a long time in the pulping process, so that the anti-overflow electrode rod is touched to generate an anti-overflow signal, the pulping period is prolonged easily, and the electric energy is wasted endlessly. Therefore, the conventional food processing machine has a pulp capacity limited to a small pulp range, such as 300ml to 600ml, 600ml to 900ml, 900ml to 1200ml, etc., and based on this, the conventional food processing machine has a different design according to the size of the capacity that can be made, such as a miniaturized soymilk machine, a high-capacity soymilk machine, etc. However, it is difficult to realize that a product can produce 300ml to 1200ml or even wider capacity beverage by using the conventional household food processor.
Of course, in order to solve the technical problem, a food processor free of hand washing appears in the industry, for example, patent CN202011545073.0 discloses a food processor free of hand washing, which makes drinks through multiple water inflow and multiple blending, can meet the drinking requirements of different people, and can make 300 ml-1200 ml of drinks in a wider range. However, the preparation period of the blended beverage is longer, and the taste of the blended beverage can not meet the drinking requirements of partial consumers. In addition, the manufacturing cost of the food processor without hand washing is higher, and the purchase selection of partial consumers is influenced.
Meanwhile, prior art CN201610753199.4 still discloses a food processor, hide between this food processor's the cup and the handheld handle and be provided with signal PCB board, be provided with the sheetmetal on this signal PCB board, when the volume of food in the cup changed, the condenser that the food in sheetmetal and the cup constitutes can produce charge signal, signal PCB board again with charge signal transmission to control circuit board, control circuit board can judge the height of the interior food liquid level of current cup, utilize control circuit board to carry out start-stop control to electric heat-generating body or knife tackle, with the problem of solving food and spilling over. Although the above scheme can replace the convex anti-overflow electrode rod by detecting the anti-overflow signal through the signal PCB board, the problem that the anti-overflow electrode rod has cleaning dead angles can be solved. However, in this scheme, there is the installation clearance between signal PCB board and the cup, and signal PCB board can't accurately detect the anti-overflow signal, and in addition, the anti-overflow detection position of this signal PCB board generally sets up in the highest department of PCB board, and in the in-service use, the sheetmetal of anti-overflow detection position below can discern water level signal, but based on thick liquid foam, the characteristics of thick liquid foam, this fixed anti-overflow detection position receives external parasitic capacitance's influence great, also can't the anti-overflow signal of accurate discernment thick liquid. At the same time, the fixed overflow prevention detection position may cause a larger deviation of the detected overflow prevention position from the actual slurry position due to uneven surface of the slurry, and there is a safety risk of overflow. In addition, the food processor cannot simultaneously prepare 300ml to 1200ml of syrup beverage.
In addition, the prior art cn201921962352.X also discloses a capacitive continuous liquid level detection structure having two induction electrode plates arranged in parallel and an electric kettle thereof, and also discloses a method of detecting the height of a water level by a duty ratio. In this scheme, the kettle body external surface of electric kettle is arc structure, consequently, need adopt soft PFB board to install on the kettle body outer wall through the mode of pasting, owing to be provided with two induction electrode pieces on the PFB soft board, the in-process that the water level risees, the arc arrangement is in the induction electrode piece on the kettle body outer wall can appear, the change of capacitance value can also be sensed to the induction position near actual water level top, and the water level and the actual water level that calculate according to the duty cycle can have obvious deviation, the accuracy of detection reduces, unfortunately to electric kettle, the detection deviation of water level is not serious, can not cause the security risk. However, the inventor researches and discovers that the scheme is only suitable for detecting the water level of the electric kettle, but cannot detect the anti-overflow signal, because the conductivity of bubbles and foam is reduced, the sensitivity of the induction electrode plate to the bubbles and foam is reduced, and the unevenness of the surfaces of the bubbles and the foam can further increase the error of detecting the arc-shaped PFB soft board, so that the scheme is not suitable for detecting the anti-overflow signal and is easy to have the safety risk of pulp overflow.
Disclosure of Invention
The invention aims to provide the pulping control method of the liquid heater for detecting the air separation, by adopting the pulping control method, different initial water levels can be subjected to pulping with different initial overflow prevention judgment positions, so that the pulping efficiency is greatly improved, the preparation period can be shorter when a low-water-level drink is prepared, the pulping is more energy-saving, the overflow prevention reliability and the intelligent degree are higher, and the user experience is remarkably improved.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a separate pulping control method of liquid heater that detects, liquid heater is including the glass container, and the glass container outer wall is provided with banding pick-up plate, the pick-up plate is equipped with a plurality of electric capacity pole pieces that are used for separating empty detection water level signal and anti-overflow signal along the direction of height, its characterized in that: the capacitor pole piece at the upper part of the detection plate is used as an overflow prevention judgment position for detecting different overflow prevention heights, the initial water level of the liquid heater added into the glass container during the current pulping is detected through the capacitor pole piece at the lower part of the detection plate, the capacitor pole piece corresponding to the overflow prevention signal detected by the upper part of the pulping detection plate is determined according to the initial water level and the preset corresponding relation, and the capacitor pole piece at the upper part of the detection plate is used as the initial overflow prevention judgment position for the current pulping to perform pulping operation.
Further, the preset corresponding relation comprises a plurality of preset water level detection sections for detecting the initial water level, the detection heights of the different water level detection sections are different, the detection plate is provided with different capacitance pole pieces corresponding to the different water level detection sections, the different water level detection sections are provided with different overflow prevention judgment bits in one-to-one correspondence, the corresponding overflow prevention judgment bits are located above the corresponding water level detection sections, the water level detection section where the pulping is located is determined according to the initial water level, and the corresponding initial overflow prevention judgment bits are obtained according to the water level detection section of the pulping.
Further, the water level detection section includes a low water level section H 1, a medium water level section H 2 and a high water level section H 3, and the overflow prevention judgment bit includes a low water level overflow prevention judgment bit F 1, a medium water level overflow prevention judgment bit F 2 and a high water level overflow prevention judgment bit F 3, wherein the initial water level V and the initial overflow prevention judgment bit have the following relationship:
When V is smaller than H 1, acquiring the primary overflow prevention judgment bit corresponding to the initial water level V as F 1;
when H 1≤V<H2 is reached, acquiring a primary overflow prevention judgment bit corresponding to the initial water level V as F 2;
When H 2≤V<H3 is reached, the primary overflow prevention judgment bit corresponding to the initial water level V is obtained to be F 3.
Further, the water level detection section further comprises an ultra-low water level detection section H 0 and H 0<H1;
when H 0≤V<H1 is reached, acquiring a primary overflow prevention judgment bit corresponding to the initial water level V as F 1;
When V is smaller than H 0, the water is judged to be free or ultra-low in water quantity, and the liquid heater gives an alarm and prompts.
Or the water level detection section further comprises an ultrahigh water level detection section H 4 and H 4>H3;
when the temperature is H 3≤V<H4, the liquid heater is configured with an ultra-high water pulping program to pulp, and overflow prevention control is carried out according to the overflow prevention temperature preset by the ultra-high water pulping program;
When H 4 is less than or equal to V, the water is judged to be ultrahigh water, and the liquid heater gives an alarm.
Further, the preset corresponding relation comprises a preset height value, and the height of the capacitor pole piece with the initial water level detected on the detection plate is added with the preset height value to be used as the initial overflow prevention judgment bit of the current pulping.
Further, the initial water level is obtained within 5 seconds after the user selects the function and starts the operation.
Further, after the user selects the function and starts the operation, the liquid heater obtains the static water level V 1 first, then drives the motor to stir to obtain the dynamic water level V 2, and then calculates the initial water level according to the difference between V 1 and V 2:
When (when) When the water level is at the initial water level, V 2 is taken as the initial water level;
When (when) When (V 2+V1)/2 is used as an initial water level; wherein/>Is a preset value.
Further, in the process of performing pulping operation with the primary overflow prevention judgment, when it is detected that the slurry is continuously generating an overflow prevention signal at the primary overflow prevention judgment, the adhesion abnormality is confirmed, the overflow prevention judgment is dynamically adjusted by the liquid heater, and the overflow prevention judgment above the primary overflow prevention judgment is used as a new overflow prevention judgment to continue pulping operation.
Further, the overflow prevention judgment position further comprises a highest overflow prevention judgment position, when the slurry is detected to continuously generate an overflow prevention signal at the highest overflow prevention judgment position in the boiling process, the overflow prevention judgment position is confirmed to be in abnormal adhesion, and the liquid heater is used for configuring heating parameters according to the current slurry temperature T to continue boiling operation.
Further, the liquid heater is further preset with an overflow prevention temperature Td of the current altitude, wherein the following relationship exists between T and Td:
Heating the slurry at a power of 1/2P Forehead (forehead) when T < Td-10;
Heating the slurry at 1/3P Forehead (forehead) power when Td-10 is less than or equal to T < Td-5;
Heating the slurry at 1/4P Forehead (forehead) power when Td-5 is less than or equal to T < Td-3;
Stopping heating when Td-3 is less than or equal to T; wherein P Forehead (forehead) is the rated heating power of the heating pipe.
Further, the liquid heater performs pulping operation according to an initial water level self-adaptive pulping program, wherein the pulping program comprises different heating parameters and/or different crushing parameters, the heating parameters comprise heating time and/or heating power, and the crushing parameters comprise crushing time and/or motor stirring power and/or motor rotating speed.
Further, the liquid heater performs pulping operation according to an initial water level self-adaptive pulping program, wherein the configuration pulping program comprises corresponding heating power P=P 0*(V0/V according to the obtained initial water level V self-adaptive adjustment, wherein V 0 is a preset minimum water level, and P 0 is heating power corresponding to a preset minimum water level V 0;
Or the liquid heater performs pulping operation according to an initial water level self-adaptive pulping program, wherein the pulping program comprises the step of self-adaptively adjusting corresponding motor rotation speed S=S 0+ΔS*(V0/V according to the obtained initial water level V, V 0 is a preset minimum water level, S 0 is the motor rotation speed corresponding to the preset minimum water level V 0, and DeltaS is a preset constant.
Further, the capacitor pole pieces comprise a first capacitor pole, a second capacitor pole piece and a third capacitor pole piece which are sequentially arranged along the height direction of the detection plate from bottom to top, wherein the first capacitor pole piece is used for detecting a first initial water level added into the glass container, the second capacitor pole piece is used for detecting a first initial overflow prevention judgment position corresponding to the first initial water level, the second capacitor pole piece is multiplexed for detecting a second initial water level added into the glass container, and the third capacitor pole piece is used for detecting a second initial overflow prevention judgment position corresponding to the second initial water level;
Or the capacitor pole piece comprises a first capacitor pole, a second capacitor pole piece and a third capacitor pole piece which are sequentially arranged along the height direction of the detection plate from bottom to top, wherein the first capacitor pole piece is used for detecting a first initial water level added into the glass container, the second capacitor pole piece is used for detecting a second initial water level added into the glass container, the third capacitor pole piece is a detection block with a height, the lower end of the third capacitor pole piece is used for detecting a first initial overflow prevention judgment position corresponding to the first initial water level, and the upper end of the third capacitor pole piece is used for detecting a second initial overflow prevention judgment position corresponding to the second initial water level.
For the liquid heater, the strip-shaped detection plate is arranged on the outer wall of the glass container, and the plurality of capacitance pole pieces are arranged on the detection plate along the height direction. In addition, the liquid heater can not generate cleaning dead angles around the anti-overflow electrode or the water level electrode, so that the cleaning is more convenient and cleaner for users.
Meanwhile, the capacitance pole piece at the upper part of the detection plate is used for detecting the overflow prevention judgment bits with different overflow prevention heights, namely, the detection of overflow prevention signals at the plurality of overflow prevention heights can be realized, so compared with the existing liquid heater with only one overflow prevention electrode with fixed position, the liquid heater provided by the invention can detect the overflow prevention signals of the height of slurry or foam layer by layer, can completely avoid the problem of overflow of slurry, and has higher reliability of overflow prevention detection. In addition, the pulping range of the liquid heater can be designed to be wider, because each pulping capacity (different initial water levels can be detected) can be provided with a separate overflow prevention judgment position to carry out corresponding overflow prevention signal detection, the problem that the overflow prevention electrode is not touched by the pulp or the pulp is easy to overflow is completely avoided, compared with the existing liquid heater with only one highest and fixed overflow prevention electrode, when the liquid heater is used for manufacturing the pulp with low water quantity, the liquid heater does not need to always heat the pulp to generate more pulp to touch the overflow prevention electrode, so that the problem of electric quantity transition consumption does not exist when the liquid heater is used for pulping, the use of energy sources is effectively saved, the wider pulping selection is provided for users, and the use experience of the users is greatly improved.
In addition, for the liquid heater, in the pulping process, an initial water level of the liquid heater added into the glass container is detected through the capacitor pole piece at the lower part of the detection plate, the capacitor pole piece corresponding to the detection overflow prevention signal at the upper part of the detection plate is determined according to the initial water level and a preset corresponding relation, and then the capacitor pole piece at the upper part of the detection plate is used as a primary overflow prevention judgment position for the current pulping to perform pulping operation. It should be noted that, the first overflow prevention judgment bit refers to a position for detecting an overflow prevention signal for the first time in the pulping process. When no abnormality occurs in the whole pulping process, the grout generates an anti-overflow signal at the position of the primary anti-overflow judgment position, and the anti-overflow operation is controlled. When adhesion abnormality occurs in the pulping process, even if the pulping operation is stopped, it is continuously detected that the pulp always generates an overflow preventing signal at the primary overflow preventing judgment position, which indicates that adhesion abnormality exists at the moment, and the function of detecting the overflow preventing signal at the primary overflow preventing judgment position is invalid. In order to continue to finish pulping operation, unnecessary operation trouble of a user is reduced, and in the rest pulping process, the liquid heater can dynamically adjust a new overflow prevention judgment position, at the moment, the new overflow prevention judgment position can solve abnormal adhesion, ensure that pulping operation can be finished, and prevent slurry overflow.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of one embodiment of a liquid heater of the present invention;
FIG. 2 is a schematic elevational view of the sensing plate of FIG. 1;
FIG. 3 is a schematic view of the rear structure of the sensing plate of FIG. 1;
fig. 4 is a schematic view of another structure of the sensing plate in fig. 1.
Detailed Description
Fig. 1,2 and 3 show a schematic structure of a liquid heater according to the present invention. The liquid heater is a food processor with a motor arranged below and used for making soybean milk drinks, and comprises a glass container 1 forming a pulping cavity 10 and a cup cover 2 covering the glass container 1, wherein a heating device (heating pipe) 4 for heating the pulping cavity 10 is arranged at the bottom of the glass container 1, a motor 3 is arranged in a mounting cavity 20 below the glass container 1, a rotating shaft driven by the motor 3 penetrates through the bottom of the glass container 1 and stretches into the pulping cavity 10, the tail end of the rotating shaft is connected with a crushing device (not marked in the drawing), a detection plate 5 for separating a detection liquid level is arranged on the outer side of the side wall of the glass container 1, the detection plate 5 is hidden and arranged between the glass container 1 and a handle (not marked in the drawing), a main control 6 is further arranged in the mounting cavity 20 below the glass container 1, and the main control 6 is respectively electrically connected with the motor 3, the heating device (heating pipe) 4 and the detection plate 5.
In this embodiment, a plurality of capacitor pole pieces arranged at intervals are disposed on a surface (set as a front surface) of the detection board 5 facing the glass container 1, the capacitor pole pieces include a plurality of first capacitor pole pieces 51 located at a lower portion and a plurality of second capacitor pole pieces 52 located at an upper portion, a detection height of a single second capacitor pole piece 52 is greater than a detection height of a single first capacitor pole piece 51, and a shielding layer 53, a processing chip 54 and a connection port 55 are further disposed on a back surface of the detection board 5, wherein each capacitor pole piece is electrically connected with the processing chip 54 through a printed circuit, and the processing chip 54 is electrically connected with the main control 6 through the connection port 55, so that the main control 6 receives signals processed by the processing chip 54. The number of the narrow first capacitor pole pieces 51 is 4, and L1 to L4 are respectively from bottom to top, and the number of the wide second capacitor pole pieces 52 is 5, which are all disposed above all the first capacitor pole pieces 51 and distributed according to L5 to L9 from bottom to top.
For the food processor of this embodiment, the main control 6 is preset with a plurality of water level detection sections for detecting water levels at intervals and a plurality of overflow prevention judging bits for detecting overflow at intervals, different water level detection sections are in one-to-one correspondence with different overflow prevention judging bits, and corresponding overflow prevention judging bits are located above corresponding water level detection sections. In this embodiment, the water level detection sections include an ultra-low water level detection section H 0, a low water level section H 1, a medium water level section H 2, a high water level section H 3, and an ultra-high water level detection section H 4, where the following relationships exist among the water level detection sections: h 0<H1<H2<H3<H4, wherein the overflow prevention judgment bits comprise a low water level overflow prevention judgment bit F 1, a medium water level overflow prevention judgment bit F 2 and a high water level overflow prevention judgment bit F 3, and F 1、F2、F3 is arranged from bottom to top. In this embodiment, the ultra-low water level detection section H 0 is correspondingly detected by the first capacitor pole piece L1, the upper limit of the corresponding low water level section H 1 corresponds to L3, L2-L3 are all used for detecting the water level in the low water level section H 1, the upper limit of the middle water level section H 2 corresponds to the second capacitor pole piece L6, L4-L6 are all used for detecting the water level in the middle water level section H 2, the high water level section H 3 corresponds to the second capacitor pole piece L7, and the upper limit of the ultra-high water level detection section H 4 corresponds to L9, and L8-L9 are all used for detecting the water level in the ultra-high water level section H 4. Meanwhile, the second capacitor pole piece L6 is multiplexed as the low water level overflow prevention judgment bit F 1, the second capacitor pole piece L7 is multiplexed as the medium water level overflow prevention judgment bit F 2, and L9 is multiplexed as the high water level overflow prevention judgment bit F 3.
In the pulping process of the food processor of this embodiment, the main control 6 will detect the initial water level of the pulping added into the glass container 1 according to the first capacitor pole piece or the second capacitor pole piece at the lower part of the detection plate 5, determine the water level detection section according to the initial water level, and then determine the second capacitor pole piece corresponding to the upper part of the detection plate 5 and used for detecting the anti-overflow signal according to the water level detection section, and take the second capacitor pole piece as the primary anti-overflow judgment bit of the pulping at this time to perform the pulping operation, and meanwhile, the main control 6 will also perform the pulping operation according to the initial water level adaptive configuration pulping program.
For the food processor of this embodiment, be provided with the pick-up plate that separates empty detection liquid level on the food processor, generally can be provided with a plurality of electric capacity pole pieces on the pick-up plate, this embodiment has used separating empty touch-sensitive principle, utilizes electric capacity pole piece to separate empty detection water level and anti-overflow signal to the pick-up plate can replace current, convex water level electrode and the anti-overflow electrode that set up respectively on different positions of machine, has realized the integration of food processor function, greatly reduced the manufacturing cost of food processor. In addition, the food processor can not generate cleaning dead angles around the overflow-preventing electrode or the water level electrode, so that the cleaning of a user is more convenient and cleaner.
Meanwhile, the detection plate is further provided with a capacitor pole piece corresponding to the water level detection sections and the overflow prevention judging bits in a one-to-one mode, and different water level detection sections and different overflow prevention judging bits are also corresponding to each other in a one-to-one mode, and the corresponding overflow prevention judging bits are located above the corresponding water level detection sections. Compared with the existing food processor with the anti-overflow electrode, the anti-overflow electrode has higher anti-overflow reliability, and all anti-overflow judgment positions are in a hidden and non-exposed state, so that the trouble that a user is difficult to clean is avoided.
Meanwhile, in this embodiment, different overflow prevention judging bits correspond to different water level detecting sections, so that compared with the existing food processor, the pulping range of the food processor of this embodiment can be wider, because each overflow prevention judging bit can be used for corresponding overflow prevention detection under each pulping capacity (namely, with a plurality of different initial water levels), compared with the existing overflow prevention electrode which is the highest and fixed, more pulp is not required to be always heated to generate more pulp to touch the overflow prevention electrode in the pulping process so as to generate a touch prevention signal. Therefore, when the food processing machine is used for pulping, the problem of electric quantity transition consumption does not exist, so that the energy is effectively saved, a wider range of pulping selection is provided for a user, and the use experience of the user is greatly improved.
Secondly, for the food processor of this embodiment, during pulping, an initial water level of the food processor added into the glass container during the pulping is detected by the capacitor pole piece at the lower part of the detection plate, different initial water levels are corresponding to the same or different water level detection sections, the capacitor pole piece corresponding to the detection overflow prevention signal at the upper part of the detection plate is determined according to the initial water level and the corresponding water level detection sections, and then the capacitor pole piece at the upper part of the detection plate is used as the primary overflow prevention judgment position for the pulping. It should be noted that, the first overflow prevention judgment bit refers to a position for detecting an overflow prevention signal for the first time in the pulping process. When no abnormality occurs in the whole pulping process, the slurry generates an anti-overflow signal at the position of the primary anti-overflow judgment position, and anti-overflow operation control is performed. When adhesion abnormality occurs in the pulping process, even if the pulping operation is stopped, it is continuously detected that the pulp always generates an overflow preventing signal at the primary overflow preventing judgment position, which indicates that adhesion abnormality exists at the moment, and the function of detecting the overflow preventing signal at the primary overflow preventing judgment position is invalid. In order to continue to finish pulping operation, unnecessary operation trouble of a user is reduced, and in the rest pulping process, a new overflow prevention judgment position can be adjusted by the food processor according to the embodiment, at the moment, the new overflow prevention judgment position can solve abnormal adhesion, so that pulping operation can be finished, and the phenomenon of slurry overflow can be prevented.
In addition, for the food processor of this embodiment, the main control also performs pulping according to the pulping program configured by the initial water level in the pulping process, so, by adopting the pulping control method of this embodiment, the pulping efficiency can be greatly improved, for example, in the process of performing low water level pulping, the main control can automatically adjust the heating power or the heating time in the pulping program to match with the low water level pulping, so as to greatly shorten the pulping period and improve the intelligentization degree of the product. And when carrying out low water level slurrying, because the initial water level of preventing overflowing judgement position has also reduced along with the initial water level, when carrying out slurrying boiling, the thick liquid foam that the heating produced can not rise very high to effectually avoided thick liquid foam wall built-up, hidden sediment etc. difficult washing or take place problem such as thick liquid foam adhesion.
In this embodiment, when the initial water levels detected by the detection plates are different, since there may be different corresponding water level detection sections, there may be different corresponding pulping processes, and the main relationships are as follows:
When V is smaller than H 0, the detection board can not detect the initial water level signal, at the moment, the main control judges that the water level in the pulping cavity is lower than the first capacitance pole piece L1, the pulping cavity is in a water-free or ultra-low water quantity state, and the main control alarms to prompt a user to place the material quantity according to the instruction.
When H 0≤V<H1 is detected, the first capacitor pole pieces L1-L2 on the detection plate can detect the water level signal, at this time, the areas detected by the initial water level V are all considered to be below the low water level detection section H 1, and the main control judges that the initial overflow prevention judgment bit of the initial water level V corresponding to pulping is F 1 (namely L6), and the main control performs pulping according to the pulping program corresponding to the initial water level V configuration.
When H 1≤V<H2 is detected, the first capacitive pole piece L3, the first capacitive pole piece L4 and the second capacitive pole piece L5 on the detection plate can detect water level signals, at this time, the area detected by the initial water level V is located in L3-L5 and is considered to be below the middle water level detection section H 2, and the main control judges that the initial water level V corresponds to the primary overflow prevention judgment level F 2 (namely L7) of pulping, and the main control performs pulping according to the pulping program corresponding to the initial water level V configuration.
When H 2≤V<H3, the second capacitance pole piece L6 on the detection plate detects a water level signal, at this time, the initial water level V corresponds to the detection area where L6 is located, and the primary overflow prevention judgment bit of the primary water level V corresponding to pulping is F 3 (i.e. L9) which is judged by the main control, and the main control configures the corresponding pulping program according to the initial water level V to perform pulping.
When H 3≤V<H4 is performed, L7 and L8 on the detection plate can detect water level signals, at the moment, the initial water level V is located in the area detected by L7-L8 and is considered to be below the ultrahigh water level section H 4, and the main control configures a preset ultrahigh water pulping program according to the initial water level V to perform pulping at the moment, wherein when the ultrahigh water pulping program is used for pulping, the main control performs overflow control at an overflow prevention temperature preset by the ultrahigh water pulping program so as to prevent pulp from overflowing during pulping.
When H 4 is less than or equal to V, and the L9 on the detection plate detects a water level signal, the main control judges that the water quantity in the pulping cavity is ultrahigh, and the main control alarms to prompt a user to place the material quantity according to the instruction.
For this embodiment, the first overflow prevention judgment bits corresponding to different initial water levels are all disposed on the second capacitor pole piece, and the detection height of the second capacitor pole piece is greater than that of the first capacitor pole piece. The inventor finds through research that in the process of pulping, when the slurry is whipped or heated, substances such as bubbles, foam and the like are generated on the surface of the slurry, and the capacitance value fluctuation of the bubbles and the foam induced by the capacitance pole pieces is small, so that the processing chip cannot accurately determine whether the capacitance is parasitic capacitance or an actual anti-overflow signal. Therefore, in this embodiment, the detection height of the second capacitor pole piece is set to be greater than that of the first capacitor pole piece, so that when the anti-overflow signal is detected, the second capacitor pole piece with an anti-overflow judgment position is formed, the second capacitor pole piece has a larger sensing area, a larger fluctuation capacitance value can be obtained, and more accurate anti-overflow signal detection is realized.
In the present embodiment, the detection height between the water level detection sections may be set according to the requirements, and is not limited to the solution disclosed in the present embodiment. Meanwhile, in this embodiment, the low water level segment H 1 corresponds to the first water level detection segment, the medium water level segment H 2 corresponds to the second water level detection segment, and the high water level segment H 3 corresponds to the third water level detection segment, where the second capacitor pole piece L6 on the detection board is used as an initial water level detection of the second water level detection segment (H 2), and is multiplexed as an anti-overflow signal detection (i.e., F 1) of the first anti-overflow judgment bit corresponding to the first water level detection segment (H 1), and similarly, the L7 on the detection board is used as an initial water level detection of the third water level detection segment (H 3), and is multiplexed as an anti-overflow signal detection (i.e., F 2) of the first anti-overflow judgment bit corresponding to the second water level detection segment (H 2), so that the pulp capacity range of the food processor can be significantly improved. Compared with the prior art, the pulping process can realize pulping within a wider tolerance range, meet the pulping requirement of 1 person to more than one person, remarkably improve the pulping efficiency, and have better mouthfeel compared with the blended pulp beverage. Of course, the number design of the water level detection section and the overflow prevention judgment bits can be changed according to the requirements.
It should be noted that, for the detection plate of the present invention, the structure is not limited to the solution disclosed in the present embodiment, for example, a plurality of capacitor pole pieces with the same size or different sizes may be disposed on the detection plate, for example, a first capacitor pole piece, a second capacitor pole piece, and a third capacitor pole piece are sequentially disposed along the height direction of the detection plate from bottom to top, where the first capacitor pole piece is used for detecting a first initial water level added into the glass container, the second capacitor pole piece is used for detecting a first initial overflow prevention judgment position corresponding to the first initial water level, and meanwhile, the second capacitor pole piece is also multiplexed for detecting a second initial water level added into the glass container, and the third capacitor pole piece is used for detecting a second initial overflow prevention judgment position corresponding to the second initial water level.
Or the capacitor pole piece comprises a first capacitor pole, a second capacitor pole piece and a third capacitor pole piece which are sequentially arranged along the height direction of the detection plate from bottom to top, wherein the first capacitor pole piece is used for detecting a first initial water level added into the glass container, the second capacitor pole piece is used for detecting a second initial water level added into the glass container, the third capacitor pole piece is a detection block with a height, the lower end of the third capacitor pole piece is used for detecting a first initial overflow prevention judgment bit corresponding to the first initial water level, and the upper end of the third capacitor pole piece is used for detecting a second initial overflow prevention judgment bit corresponding to the second initial water level.
It should be noted that, in this embodiment, within 5 seconds after the user selects the function and starts the operation, the main control needs to obtain the initial water level and configure the corresponding pulping program to make the slurry, otherwise, the user may misjudge the product problem, and the user experience is degraded. Meanwhile, after adding water into the glass container, the liquid level can shake and generate bubbles, and the accuracy and reliability of detection of the capacitor pole piece on the detection plate can be affected, so that the accuracy of obtaining the initial water level by the main control can be reduced, and in order to achieve that the initial water level obtained by the main control is more accurate or more approximate to the actually added water level, the initial water level is obtained in the following mode:
After the user selects the function and starts the work, the main control firstly obtains the static water level V 1 detected by the detection plate, the main control drives the motor to stir so as to obtain the dynamic water level V 2, and the main control calculates the initial water level according to the difference value between V 1 and V 2:
When (when) When the water level is in the same state, the main control takes V 2 as an initial water level; when/>When the water level is the initial water level, (V 2+V1)/2 is used as the main control; wherein/>And a preset value is used for the main control. In order to prevent the motor from stirring too severely and affecting the acquired data, and also in order to enable the master control to acquire the initial water level faster and prevent the user from thinking abnormality, in this embodiment, the master control driving motor is required to stir at a rotation speed of not more than 5000rpm for not more than 5 seconds, wherein the rotation speed is preferably 3000rpm, and the stirring time is preferably 3 seconds.
Since bubbles, foam, etc. are generated on the surface of the relatively static liquid level after water is added into the glass container, if the detected static liquid level is directly used as the initial water level, the problem of inaccurate detection is easy to exist. By adopting the mode, bubbles or foam can be eliminated through motor stirring, the main control can obtain more accurate initial water level, the main control can effectively and accurately identify the initial water level before the pulping process is executed, the primary overflow prevention judgment position can be more accurately determined, the optimal pulping process is configured, the pulping efficiency is more optimized, and the use experience of a user is remarkably improved.
It should be noted that, in this embodiment, the main control performs pulping according to different pulping programs configured in a self-adaptive manner according to different initial water levels, where configuring different pulping programs includes configuring different heating parameters and/or different crushing parameters, where the heating parameters include heating duration and/or heating power, and the crushing parameters include crushing duration and/or motor stirring power and/or motor rotation speed. For example, in the stage of cooking in pulping, the master control is preset with a heating power P 0 corresponding to the minimum water level V 0, and the master control adaptively configures different pulping programs according to different initial water levels, where the master control adaptively adjusts the corresponding heating power P according to the obtained initial water level V, where p=p 0*(V0/V), and different heating powers P can be adopted according to different initial water levels V, that is, when the pulping water level is higher, the heating power P is smaller, and the pulping water level is lower, and the heating power P is greater. Therefore, for the high water level, the heating pipe has thermal inertia, so that the heating power of the high water level is reduced, the overflow can be effectively prevented, and the pulping safety is improved. Meanwhile, for low water level, as the overflow prevention judgment position is far away from the cup rim, the heating power of the boiling stage can be improved, faster pulping is realized, the pulping period is effectively shortened, and the pulping efficiency is improved. Of course, for other stages of pulping, different heating parameters may be configured according to the initial water level V to achieve safer, more efficient and more reliable pulping.
Or the master control presets the motor rotation speed S 0 corresponding to the lowest water level V 0, and the master control adaptively configures different pulping programs according to different initial water levels, wherein the master control adaptively adjusts the corresponding motor rotation speed s=s 0+ΔS*(V0/V according to the obtained initial water level V, Δs is a preset constant, and Δs adaptively selects different preset constants according to the stage where the pulping program is located. For example, when pulping is in the early pre-crushing stage, Δs is preset to a constant of 500rpm. And when the pulping is in the high-speed crushing stage, the preset constant of delta S is 1000rpm, wherein if the calculated S is larger than the highest rotating speed of the motor, the S is executed according to the highest motor rotating speed configuration. Therefore, when the slurry is prepared at a low water level during pre-crushing, the phenomenon of idle beating of the motor and even splashing of the slurry can be avoided. Meanwhile, the high-water-level pulping machine also has better crushing effect. Of course, if other pulverizing stages are also provided in the pulping process, Δs may be preset for different constant matching, and S may be configured according to the corresponding Δs.
In addition, the food processor of the present embodiment has a self-treatment function for abnormal sticking. For example, when the main control detects that the slurry is continuously generating an overflow preventing signal at the first overflow preventing judgment position A in the process of pulping operation by the first overflow preventing judgment position A at a low water level, the main control confirms that the slurry is in abnormal adhesion, the main control can automatically dynamically adjust the overflow preventing judgment position, and the main control continuously performs pulping operation by taking the overflow preventing judgment position B (corresponding to a middle water level) above the adjacent overflow preventing judgment position A as a new overflow preventing judgment position, and the like until the highest overflow preventing judgment position C. According to the scheme, on the basis of protecting the overflow-proof safety, the pulping program is not interrupted, the pulping operation can be safely finished under the abnormal state, and the user experience is improved.
It should be further noted that, when the slurry is detected to continuously generate the overflow prevention signal at the highest overflow prevention judgment position C during the slurry boiling process, the master control confirms that the slurry is in abnormal adhesion, and the master control can continuously perform the slurry preparation according to the current slurry temperature T and the heating parameters, at this time, the master control presets the overflow prevention temperature Td at the current altitude, wherein the following relationship exists between T and Td: when T is less than Td-10, the main control matching continues to cook the slurry with the power of 1/2P Forehead (forehead) ; when Td-10 is less than or equal to T < Td-5, the master control is matched to cook the slurry at the power of 1/3P Forehead (forehead) ; when Td-5 is less than or equal to T < Td-3, the master control heats the slurry with 1/4P Forehead (forehead) power; when Td-3 is less than or equal to T, the main control stops heating; wherein, P Forehead (forehead) is the rated heating power of heating pipe, and the main control is through foretell automatically regulated heating parameter, can solve the thick liquid boiling under the unusual adhesion state, simultaneously, still be difficult to appear the thick liquid and spill over the problem, guaranteed going on smoothly of slurrying. Of course, in order to realize the accuracy of the temperature sensor for detecting the slurry temperature, in the boiling process, the main control can also control the motor to stir the slurry at a certain rotating speed, so as to realize the uniform temperature, for example, the motor is operated in a mode of stirring at 3000rpm for 3 seconds and stopping for 3 seconds.
Of course, for the present embodiment, the low water level overflow preventing judgment bit is used as the primary overflow preventing detection bit, and the overflow preventing judgment bit or the highest overflow preventing judgment bit at the upper adjacent bit is used as the safe auxiliary overflow preventing detection bit, so as to ensure the overflow preventing safety of pulping.
It should be further noted that, the arrangement manner of the capacitor pole pieces of the detection board of the present invention is not limited to the scheme disclosed in the present embodiment, for example, as shown in fig. 4, a dividing groove 500 is further provided on the detection board, the dividing groove 500 divides the second capacitor pole piece 52 into two parallel detection areas, each second capacitor pole piece 52 is divided into two parallel sub-pole pieces by the dividing groove 500, and each sub-pole piece after being divided is electrically connected with the processing chip on the back of the detection board through a printed circuit, where the areas of the two triangles formed by dividing the second capacitor pole piece 52 are equal, but the detection areas of the two detection areas are different under the same height. When the overflow prevention detection is carried out, the processing chip respectively obtains accumulated values of the capacitance value increment detected by the two detection areas, determines the current overflow prevention height according to the ratio of the accumulated values of the two capacitance value increment, and when the current overflow prevention height is in a preset overflow prevention judgment position, the main control configures corresponding pulping parameters to carry out subsequent pulping operation. And above-mentioned detect plate structure and detection mode can obtain more accurate anti-overflow signal, helps the normal clear of slurrying, prevents the security risk that the thick liquid overflowed, has showing and has promoted slurrying efficiency. Of course, the food processor having the detection plate can also adopt the pulping control method of the invention to perform pulping operation.
It should be noted that, the main control detects the initial water level according to the capacitor pole piece at the lower part of the detection board, then searches the capacitor pole piece corresponding to the detection overflow prevention signal at the upper part of the detection board according to the corresponding relation between the initial water level and the preset water level, and uses the capacitor pole piece as the initial overflow prevention judgment bit for the current pulping operation, where in this embodiment, the preset corresponding relation includes a plurality of water level detection sections preset by the food processor for detecting the initial water level, the detection heights of the different water level detection sections are different, and the detection board is provided with different capacitor pole pieces corresponding to the different water level detection sections, the different water level detection sections are provided with different overflow prevention judgment bits corresponding to one, and the corresponding overflow prevention judgment bits are located above the corresponding water level detection sections, and the water level detection section where the current pulping is located is determined according to the initial water level, and then the corresponding initial overflow prevention judgment bit is obtained according to the water level detection section of the current pulping. Namely, the main control searches one-to-one corresponding anti-overflow judgment positions (corresponding to the capacitor pole pieces at the upper part of the detection plate) according to the water level detection section (corresponding to the capacitor pole pieces at the lower part of the detection plate) where the initial water level is, and determines the capacitor pole pieces corresponding to the upper part of the detection plate as the primary anti-overflow judgment positions of the current pulping, so that the anti-overflow control in the pulping process is realized.
Of course, there are other ways to implement the preset correspondence relationship in this embodiment. For example, the preset corresponding relation further includes that the food processor has a preset height value, and the capacitor pole piece corresponding to the detected initial water level after the preset height value is added to the height of the capacitor pole piece on the detection board is used as the initial overflow prevention judgment bit of the current pulping. That is, after the main control recognizes that the capacitor pole piece at the lower part of the detection plate detects the initial water level, the capacitor pole piece at the upper part of the detection plate for detecting the corresponding overflow prevention signal can be found according to the corresponding logic in advance and the preset height value, and the capacitor pole piece at the upper part of the detection plate is used as the initial overflow prevention judgment bit for current pulping, so that the correct overflow prevention judgment bit can be found to perform overflow prevention control of pulping. Of course, the preset height value may be a fixed value, if the glass container is not in a straight barrel shape, the anti-overflow height corresponding to each initial water level will be different, and at this time, the preset height value may be preset in the main control to change along with the change of the initial water level, and may increase or decrease along with the increase of the initial water level.
In addition, it should be noted that the liquid heater of the present invention is not limited to the food processor with the motor and the cup body integrated in the embodiment of the present invention, but may be a soymilk machine with an upper motor, a wall breaking machine with a separated cup body and a stand, and a food processor without hand washing, which can realize automatic slurry discharging and automatic cleaning. The food processor of the present invention can be applied to a heating appliance capable of performing a pulp cooking operation, a rice paste making operation, etc., such as a boiler, a health preserving kettle, a health preserving pot, etc.
It will be appreciated by persons skilled in the art that the present invention includes, but is not limited to, the accompanying drawings and what has been described in the foregoing detailed description. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (13)
1. The utility model provides a separate pulping control method of liquid heater that detects, liquid heater is including the glass container, and the glass container outer wall is provided with banding pick-up plate, the pick-up plate is equipped with a plurality of electric capacity pole pieces that are used for separating empty detection water level signal and anti-overflow signal along the direction of height, its characterized in that: the capacitor pole piece at the upper part of the detection plate is used as an overflow prevention judgment position for detecting different overflow prevention heights, the initial water level of the liquid heater added into the glass container during the current pulping is detected through the capacitor pole piece at the lower part of the detection plate, the capacitor pole piece corresponding to the overflow prevention signal detected by the upper part of the pulping detection plate is determined according to the initial water level and the preset corresponding relation, and the capacitor pole piece at the upper part of the detection plate is used as the initial overflow prevention judgment position for the current pulping to perform pulping operation.
2. The pulping control method of a liquid heater for space detection according to claim 1, wherein: the preset corresponding relation comprises a plurality of water level detection sections for detecting the initial water level, the detection heights of the different water level detection sections are different, the detection plate is provided with different capacitance pole pieces corresponding to the different water level detection sections, the different water level detection sections are provided with one-to-one different anti-overflow judgment bits, the corresponding anti-overflow judgment bits are located above the corresponding water level detection sections, the water level detection section where the pulping is located is determined according to the initial water level, and the corresponding primary anti-overflow judgment bits are acquired according to the water level detection section where the pulping is located.
3. The pulping control method of a liquid heater for space detection according to claim 2, wherein: the water level detection section comprises a low water level section H 1, a medium water level section H 2 and a high water level section H 3, and the overflow prevention judgment position comprises a low water level overflow prevention judgment position F 1, a medium water level overflow prevention judgment position F 2 and a high water level overflow prevention judgment position F 3, wherein the initial water level V and the initial overflow prevention judgment position have the following relation:
When V is smaller than H 1, acquiring the primary overflow prevention judgment bit corresponding to the initial water level V as F 1;
when H 1≤V<H2 is reached, acquiring a primary overflow prevention judgment bit corresponding to the initial water level V as F 2;
When H 2≤V<H3 is reached, the primary overflow prevention judgment bit corresponding to the initial water level V is obtained to be F 3.
4. A pulping control method of a liquid heater for space detection according to claim 3, characterized in that: the water level detection section further comprises an ultralow water level detection section H 0 and H 0<H1;
when H 0≤V<H1 is reached, acquiring a primary overflow prevention judgment bit corresponding to the initial water level V as F 1;
when V is smaller than H 0, judging that no water or ultra-low water is needed, and giving an alarm to the liquid heater;
or the water level detection section further comprises an ultrahigh water level detection section H 4 and H 4>H3;
when the temperature is H 3≤V<H4, the liquid heater is configured with an ultra-high water pulping program to pulp, and overflow prevention control is carried out according to the overflow prevention temperature preset by the ultra-high water pulping program;
When H 4 is less than or equal to V, the water is judged to be ultrahigh water, and the liquid heater gives an alarm.
5. The pulping control method of a liquid heater for space detection according to claim 1, wherein: the preset corresponding relation comprises a preset height value, and the height of the capacitor pole piece with the initial water level detected on the detection plate is added with the corresponding capacitor pole piece after the preset height value to be used as the initial overflow prevention judgment position of the current pulping.
6. The pulping control method of a liquid heater for space detection according to claim 1, wherein: the initial water level is obtained within 5 seconds after the user selects the function and starts the operation.
7. A pulping control method of a liquid heater for air-separation detection according to claim 1 or 6, characterized in that: after the user selects the function and starts the work, the liquid heater obtains the static water level V 1 firstly, then drives the motor to stir so as to obtain the dynamic water level V 2, and then calculates the initial water level according to the difference value between V 1 and V 2:
When (when) When the water level is at the initial water level, V 2 is taken as the initial water level;
When (when) When (V 2+V1)/2 is used as an initial water level; wherein/>Is a preset value.
8. The pulping control method of a liquid heater for space detection according to claim 1, wherein: in the process of pulping operation by the primary overflow prevention judgment position, when the slurry is detected to continuously generate an overflow prevention signal at the primary overflow prevention judgment position, the adhesion abnormality is confirmed, the overflow prevention judgment position is dynamically adjusted by the liquid heater, and the overflow prevention judgment position close to the upper side of the primary overflow prevention judgment position is used as a new overflow prevention judgment position to continuously perform pulping operation.
9. The pulping control method of a liquid heater for space detection according to claim 8, wherein: the overflow prevention judging position further comprises a highest overflow prevention judging position, when the slurry is detected to continuously generate an overflow prevention signal at the highest overflow prevention judging position in the boiling process, the overflow prevention judging position is confirmed to be in abnormal adhesion, and the liquid heater is used for configuring heating parameters according to the current slurry temperature T to continue boiling operation.
10. The pulping control method of a liquid heater for space detection according to claim 9, wherein: the liquid heater is also preset with an overflow prevention temperature Td at the current altitude, wherein T and Td have the following relationship:
Heating the slurry at a power of 1/2P Forehead (forehead) when T < Td-10;
Heating the slurry at 1/3P Forehead (forehead) power when Td-10 is less than or equal to T < Td-5;
Heating the slurry at 1/4P Forehead (forehead) power when Td-5 is less than or equal to T < Td-3;
Stopping heating when Td-3 is less than or equal to T; wherein P Forehead (forehead) is the rated heating power of the heating pipe.
11. The pulping control method of a liquid heater for space detection according to claim 1, wherein: the liquid heater performs pulping operation according to an initial water level self-adaptive pulping program, wherein the pulping program comprises different heating parameters and/or different crushing parameters, the heating parameters comprise heating time and/or heating power, and the crushing parameters comprise crushing time and/or motor stirring power and/or motor rotating speed.
12. A pulping control method of a liquid heater for air-separation detection according to claim 1 or 11, characterized in that: the liquid heater performs pulping operation according to an initial water level self-adaptive configuration pulping program, wherein the configuration pulping program comprises the step of self-adaptively adjusting corresponding heating power P=P 0*(V0/V according to the obtained initial water level V, V 0 is a preset minimum water level, and P 0 is heating power corresponding to a preset minimum water level V 0;
Or the liquid heater performs pulping operation according to an initial water level self-adaptive pulping program, wherein the pulping program comprises the step of self-adaptively adjusting corresponding motor rotation speed S=S 0+ΔS*(V0/V according to the obtained initial water level V, V 0 is a preset minimum water level, S 0 is the motor rotation speed corresponding to the preset minimum water level V 0, and DeltaS is a preset constant.
13. The pulping control method of a liquid heater for space detection according to claim 1, wherein: the first capacitor pole piece is used for detecting a first initial water level added into the glass container, the second capacitor pole piece is used for detecting a first initial overflow prevention judgment bit corresponding to the first initial water level, the second capacitor pole piece is multiplexed to be used for detecting a second initial water level added into the glass container, and the third capacitor pole piece is used for detecting a second initial overflow prevention judgment bit corresponding to the second initial water level;
Or the capacitor pole piece comprises a first capacitor pole, a second capacitor pole piece and a third capacitor pole piece which are sequentially arranged along the height direction of the detection plate from bottom to top, wherein the first capacitor pole piece is used for detecting a first initial water level added into the glass container, the second capacitor pole piece is used for detecting a second initial water level added into the glass container, the third capacitor pole piece is a detection block with a height, the lower end of the third capacitor pole piece is used for detecting a first initial overflow prevention judgment position corresponding to the first initial water level, and the upper end of the third capacitor pole piece is used for detecting a second initial overflow prevention judgment position corresponding to the second initial water level.
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