CN110567550A - anti-overflow sensor and cooking utensil - Google Patents
anti-overflow sensor and cooking utensil Download PDFInfo
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- CN110567550A CN110567550A CN201810575182.3A CN201810575182A CN110567550A CN 110567550 A CN110567550 A CN 110567550A CN 201810575182 A CN201810575182 A CN 201810575182A CN 110567550 A CN110567550 A CN 110567550A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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Abstract
The invention provides an overflow prevention sensor and a cooking appliance, comprising: a substrate; the number of the induction electrodes is at least two, and the at least two induction electrodes are arranged on the substrate; the porous membrane is attached to the substrate and is simultaneously contacted with the at least two induction electrodes; the number of the insulating parts is equal to that of the induction electrodes, and one insulating part covers the part of one induction electrode, which is not in contact with the porous membrane; and a controller electrically connected to the sensing electrode. According to the anti-overflow sensor provided by the invention, liquid generates a capillary phenomenon in the porous membrane, the liquid after the capillary phenomenon is more easily vaporized to form steam, so that an induced voltage is generated, the controller can judge whether the liquid enters the anti-overflow sensitive area or not by detecting the induced voltage, so that the overflow of the liquid in the pot can be detected by reasonably setting the installation position of the anti-overflow sensor, the active early warning of the overflow pot is realized, and the intelligent control of the overflow pot is improved.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to an anti-overflow sensor and a cooking appliance.
Background
The electromagnetic oven has the problem of boiling and overflowing during the use process of cooking soup and porridge, so that the product quality and the user experience are greatly reduced.
The general method is a passive anti-overflow structure design, for example, a water guiding rib with a flow channel function is arranged around a heat dissipation hole of the induction cooker, and a drain hole is arranged at the end part of the water guiding rib, when the overflow volume of the induction cooker is large, water passes through the water guiding rib and is quickly drained to the outside of the induction cooker through the drain hole; if an anti-overflow electrode is arranged in the pot and is commonly used for the soybean milk machine, the principle of the anti-overflow electrode is that liquid is in contact with the anti-overflow electrode to cause short circuit when the soybean milk machine overflows, so that the soybean milk machine can judge that the soybean milk machine overflows when the short circuit occurs.
However, the passive overflow-preventing structural design can not realize overflow early warning and intelligent control, and the potential risk of overflow-preventing failure exists when the water quantity is too large or the heating is too fast.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
to this end, one aspect of the present invention is to provide an overfill prevention sensor.
Another aspect of the present invention is to provide a cooking appliance.
In view of the above, according to a first aspect of the present invention, there is provided an overfill prevention sensor comprising: a substrate; the number of the induction electrodes is at least two, and the at least two induction electrodes are arranged on the substrate; the porous membrane is attached to the substrate and is simultaneously contacted with the at least two induction electrodes; the number of the insulating parts is equal to that of the induction electrodes, and one insulating part covers the part of one induction electrode, which is not in contact with the porous membrane; and a controller electrically connected to the sensing electrode.
The anti-overflow sensor provided by the invention has the advantages that the substrate is provided with the at least two sensing electrodes, the porous membrane is attached to the substrate and is simultaneously contacted with the at least two sensing electrodes, the anti-overflow sensitive area of the anti-overflow sensor is formed by the two sensing electrodes and the porous membrane between the two sensing electrodes, when liquid enters the anti-overflow sensitive area, the liquid generates a capillary phenomenon in the porous membrane, the liquid after the capillary phenomenon is more easily vaporized to form steam, so that an induction voltage is generated, the controller is electrically connected with the sensing electrodes, and the controller can judge whether the liquid enters the anti-overflow sensitive area or not by detecting the induction voltage, so that the overflow of the liquid in a pot can be detected by reasonably setting the installation position of the anti-overflow sensor, the active early warning of the overflow pot is realized, and the intelligent control of the overflow pot is. The anti-overflow sensor further comprises an insulating part, the insulating part covers the part, where the sensing electrode is not connected with the porous membrane, of the insulating part, the quantity of the insulating part is equal to that of the sensing electrode, a waterproof insulating layer can be formed through the insulating part, the sensing electrode is protected in an insulating mode, the fact that the part, which is not contacted with the porous membrane, of the sensing electrode is prevented from being subjected to water inlet failure and affecting the service life of the anti-overflow sensor is prevented, the quality of a product is ensured, electric leakage is avoided simultaneously, and the use.
In addition, the anti-overflow sensor in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, preferably, the at least one sensing electrode is located at an edge of the porous film.
in this technical scheme, set up at least one response electrode and be located the edge of porous membrane, the response electrode that is located the porous membrane edge contacts the liquid level more easily for the detection effect of anti-overflow sensor is more accurate.
in any of the above technical solutions, preferably, the substrate is a ceramic substrate, a glass substrate, a plastic substrate, or a metal substrate; and/or the sensing electrode is a copper electrode, a copper foil tape, a gold electrode, a platinum electrode, or a graphite electrode.
In the technical scheme, the substrate is preferably a ceramic substrate, a glass substrate, a plastic substrate or a metal substrate, and the like, wherein the ceramic substrate has excellent electrical insulation performance, good heat conduction performance, high solderability and high adhesion strength, and is convenient for arranging components such as an induction electrode, a porous membrane and the like on the substrate; the glass substrate and the plastic substrate have lower production cost and are convenient to produce; the metal substrate has special magnetic conductivity and excellent heat dissipation, and the metal substrate has high mechanical strength and good processability. And/or, the induction electrode is preferably a copper electrode, a copper foil tape, a gold electrode, a platinum electrode or a graphite electrode, the copper electrode has good plasticity, can be formed by machining, forging, electroforming, wire cutting and the like, has good processing stability, and is easy to process and produce; the copper foil tape has good conductivity, easy processing and lower cost; the gold electrode and the platinum electrode have good accuracy and repeatability and long service life; the graphite electrode has good thermal shock resistance and corrosion resistance.
In any of the above technical solutions, preferably, the sensing electrode is manufactured by physical sputtering, screen printing, inkjet printing or a conductive tape; and/or the porous film is made by chemical vapor deposition or incomplete combustion of sol-gel.
In the technical scheme, the induction electrode is manufactured by physical sputtering, screen printing, ink-jet printing or conductive adhesive tapes, the induction electrode can be processed into any shape by the screen printing processing mode, the processing mode is flexible and various, the technology is easy to master, the processing price is low, and the method is suitable for processing and producing the induction electrode; the ink-jet printing has high processing precision and is suitable for various base materials; the conductive adhesive tape is easy to process and low in cost; and/or, the porous membrane is made through chemical vapor deposition or incomplete combustion sol-gel, the deposition film-forming device of chemical vapor deposition is simple, and facilitate the composition and characteristic of the control porous membrane, the flexibility is great; the incomplete combustion sol-gel is suitable for preparing various novel materials, and has low cost and easy production.
In any of the above technical solutions, preferably, the insulating portion is a waterproof tape or an epoxy resin.
In the technical scheme, the insulating part is preferably waterproof tape or epoxy resin, and specifically, the insulating tape or epoxy resin is used to cover the part of the sensing electrode, which is not connected with the porous membrane, so as to form a waterproof insulating layer for insulating and protecting the sensing electrode, prevent the part of the sensing electrode, which is not in contact with the porous membrane, from water inlet failure and affecting the service life of the anti-overflow sensor, ensure the quality of the product, avoid electric leakage and ensure the use safety. Moreover, the cost of the waterproof adhesive tape and the epoxy resin is low, and the production cost of the anti-overflow sensor can be effectively reduced.
according to a second aspect of the present invention, the present invention provides a cooking appliance having the anti-overflow sensor provided in any embodiment of the first aspect, and therefore, the cooking appliance provided in the embodiments of the present invention has all the advantages of the anti-overflow sensor provided in any embodiment of the first aspect, which are not enumerated herein.
In addition, the cooking utensil in the technical scheme provided by the invention can also have the following additional technical characteristics:
In any of the above technical solutions, preferably, the cooking appliance further includes: the outer side wall of the pot body is provided with a handle; the controller of the anti-overflow sensor is arranged in the handle, and the substrate, the sensing electrode and the porous membrane of the anti-overflow sensor are arranged on the inner side wall of the pot body.
In the technical scheme, the cooking utensil further comprises a pot body and a handle arranged on the outer side wall of the pot body, wherein a controller of the anti-overflow sensor is arranged in the handle, the handle is positioned on the outer side wall of the pot body and is far away from liquid in the pot body, the controller of the anti-overflow sensor is arranged in the handle, so that the controller of the anti-overflow sensor can be effectively prevented from contacting the liquid in the pot body, and the service life of the controller of the anti-overflow sensor is prolonged; the base plate of anti-overflow sensor, response electrode and porous membrane set up on the inside wall of the pot body, liquid takes place the boiling and produces the foam gradually when the internal liquid of pot reaches the boiling point, the base plate with anti-overflow sensor, response electrode and porous membrane set up on the inside wall of the pot body, can make the foam that produces after the liquid boiling change and contact response electrode and porous membrane, the height of the internal liquid level of anti-overflow sensor initiative detection pot of being more convenient for, thereby judge whether liquid is about to spill over according to the liquid level height in the pot body, realize active overflow pot early warning, thereby the intelligent control of overflow pot has been promoted.
In any of the above technical solutions, preferably, at least two sensing electrodes are distributed along the height direction of the pot body.
In the technical scheme, as the liquid level gradually rises from bottom to top when the liquid boils, the at least two induction electrodes are arranged and distributed along the height direction of the pot body, so that the detection accuracy of the anti-overflow sensor can be improved. Specifically, the position of the induction electrode positioned below is higher than the initial liquid level in the pot body, at the moment, at least two induction electrodes are not in contact with liquid, no induction voltage can be generated, the temperature of the liquid rises along with the heating of a cooking utensil, the liquid boils and gradually generates foam when reaching the boiling point, when the liquid level rises or the foam upwards spreads to the induction electrode positioned below, the liquid simultaneously enters the interior of the porous membrane and evaporates, so that the induction voltage is generated, the area which is not in contact with the liquid between the two electrodes is an evaporation surface, the evaporation surface gradually decreases along with the rise of the liquid level or the foam, the induction voltage is reduced along with the reduction of the evaporation surface, when the liquid level or the foam reaches the electrode positioned above, the induction voltage drops to about 0V, the controller can effectively judge the height of the liquid level by detecting the change of the induction voltage, and realize active overflow early, thereby promoting the intelligent control of the overflowing pot.
In any of the above technical solutions, preferably, the sensing electrode includes a positioning sensing electrode, the setting height of the positioning sensing electrode does not exceed the setting height of the other sensing electrodes, and the positioning sensing electrode is located at the bottom of the porous film.
In this technical scheme, the response electrode is including fixing a position the response electrode, and the setting height of fixing a position the response electrode is no longer than other response electrode's setting height, the location response electrode is located the bottom of porous membrane, specifically, the liquid level heats the bubble back and rises or the foam that the liquid boiling produced upwards when stretching to the location response electrode, liquid enters into the inside and the evaporation of porous membrane simultaneously, thereby produce induced voltage, the controller produces induced voltage through detecting and can judge effectively that the current height of liquid level has reached the location response electrode, through the height that sets up the location response electrode rationally, can promote the accuracy of excessive pot early warning effectively, thereby the intelligent control of excessive pot has been promoted.
In any of the above technical solutions, preferably, the cooking appliance further includes: a pot body having an opening; a cover body covering the opening of the pot body; the cover body handle is positioned at the top of the outer side of the cover body, and the controller of the anti-overflow sensor is arranged in the cover body handle; the substrate, the sensing electrode and the porous membrane of the overflow prevention sensor are arranged on the inner side of the cover body.
In the technical scheme, the cooking utensil further comprises a pot body with an opening and a cover body covering the opening of the pot body, the top of the outer side of the cover body is provided with a cover body handle, a controller of the anti-overflow sensor is arranged in the cover body handle, the anti-overflow sensor can be effectively prevented from contacting liquid in the pot body, and the service life of the controller of the anti-overflow sensor is prolonged; the base plate of anti-overflow sensor, response electrode and porous membrane setting are in the inboard of lid, can a large amount of vaporization before the liquid of the internal pot overflows, thereby produce the liquefied water on the lid, the liquefied water gets into the porous membrane, produce induced voltage after the evaporation once more, thereby it is leading to detect the characteristic that overflows, the controller can receive the signal that is about to boil before the liquid boiling, and control cooking utensil continues to heat, detect once more after a period, can not produce when guaranteeing to reach complete boiling in the cooking utensil course of work through detecting and heating many times and spill over, ensure the quality of product.
In any of the above technical solutions, preferably, the cooking appliance further includes: the accommodating box is arranged on the inner side of the cover body, the shape of the accommodating box is matched with that of the cover body, and the substrate, the induction electrode and the porous membrane are arranged in the accommodating box; one side of the containing box facing the pot body is provided with a detection port, the area of the porous membrane between the at least two sensing electrodes is an anti-overflow sensitive area, and the anti-overflow sensitive area of the anti-overflow sensor is positioned at the detection port.
In this technical scheme, the inboard of lid is provided with holds the box, the base plate, response electrode and porous membrane setting are in holding the box, it is equipped with the detection mouth to hold one side of the box towards the pot body, the region that is located between two at least response electrodes of porous membrane is anti-overflow sensitive area, anti-overflow sensitive area of anti-overflow sensor is located detection mouth department, can enter into anti-overflow sensitive area by this detection mouth after the water vapor liquefaction that produces during the boiling of the internal liquid of pot, the anti-overflow sensor of being more convenient for initiatively detects the boiling degree of the internal liquid of pot, thereby judge whether liquid is about to spill over, realize active overflow pot early warning, thereby the intelligent control of overflow pot has been promoted. Further, the accommodating box is arranged to be matched with the cover body in shape, so that the accommodating box is convenient to mount on the cover body.
In any of the above technical solutions, preferably, the substrate, the sensing electrode and the porous film are located on the top of the inner side of the cover; or the substrate, the sensing electrode and the porous film are positioned at the edge of the cover body.
In the technical scheme, the substrate, the sensing electrode and the porous membrane are positioned at the top of the inner side of the cover body, or the substrate, the sensing electrode and the porous membrane are positioned at the edge of the cover body; when the substrate, the induction electrode and the porous membrane are positioned at the top of the inner side of the cover body, the substrate, the induction electrode and the porous membrane are in direct contact with the handle of the cover body, so that the arrangement is convenient, and the appearance is simple; at the edge of the cover body, which is preferred at other positions, the cover body usually has certain bending, and the cover body can slide downwards when enough liquefied water is accumulated on the inner side of the cover body, and the time point of the overflow is closer to the time point, so that the judgment result is more reliable.
in any of the above technical solutions, preferably, the cooking appliance further includes: and the heating element is in communication connection with the controller, and the controller is used for adjusting the working parameters of the heating element according to the detection value of the anti-overflow sensor.
In this technical scheme, controller and cooking utensil's heating element communication connection, the controller can be according to the operating parameter of the detected value regulation heating element of anti-overflow sensor, can not produce when guaranteeing to reach the complete boiling in the cooking utensil working process and spill over, promotes cooking utensil's heating performance.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic structural view of an overfill prevention sensor according to one embodiment of the present invention;
fig. 2 shows a schematic structural view of a cooking appliance according to an embodiment of the present invention;
Fig. 3 shows a further structural schematic diagram of a cooking appliance according to an embodiment of the invention;
Fig. 4 shows a further structural schematic diagram of a cooking appliance according to an embodiment of the present invention.
wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
1 anti-overflow sensor, 10 substrates, 20 sensing electrodes, 202 positioning sensing electrodes, 30 porous membranes, 40 insulating parts, 50 controllers, 60 leads, 2 pot bodies, 3 handles, 4 cover bodies, 5 cover body handles and 6 containing boxes.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The following describes the anti-overflow sensor and the cooking appliance according to some embodiments of the present invention with reference to fig. 1 to 4.
As shown in fig. 1, in a first aspect of the present invention, there is provided an overfill prevention sensor 1, comprising: a substrate 10; the number of the sensing electrodes 20 is at least two, and the at least two sensing electrodes 20 are arranged on the substrate 10; a porous film 30 attached to the substrate 10, the porous film 30 being in contact with at least two of the sensing electrodes 20 at the same time; insulation parts 40, the number of the insulation parts 40 is equal to the number of the induction electrodes 20, and one insulation part 40 covers the part of one induction electrode 20 which is not contacted with the porous membrane 30; and a controller 50 electrically connected to the sensing electrode 20.
the overflow prevention sensor 1 provided by the invention has the advantages that at least two sensing electrodes 20 are arranged on the substrate 10, the porous membrane 30 is attached on the substrate 10, and the porous membrane 30 is simultaneously contacted with at least two sensing electrodes 20, the two sensing electrodes 20 and the porous membrane 30 between the two sensing electrodes 20 form an anti-overflow sensitive area of the anti-overflow sensor 1, when the liquid enters the anti-overflow sensitive area, the liquid generates a capillary phenomenon in the porous membrane 30, the liquid after the capillary phenomenon is more easily vaporized to form steam, thereby generating an induced voltage, the controller 50 is electrically connected with the induction electrode 20, the controller 50 can judge whether the liquid enters the anti-overflow sensitive area or not by detecting the induced voltage, therefore, the overflow of liquid in the pot can be detected by reasonably setting the mounting position of the overflow prevention sensor 1, the active early warning of the overflow pot is realized, and the intelligent control of the overflow pot is improved. The anti-overflow sensor 1 further comprises an insulating part 40, the insulating part 40 covers the part of the sensing electrode 20, which is not connected with the porous membrane 30, the number of the insulating parts 40 is equal to that of the sensing electrodes 20, a waterproof insulating layer can be formed by arranging the insulating part 40 and is used for insulating and protecting the sensing electrodes 20, the phenomenon that the service life of the anti-overflow sensor 1 is influenced due to the fact that the part, which is not contacted with the porous membrane 30, of the sensing electrodes 20 enters water and is invalid is prevented, the quality of a product is ensured, meanwhile, electric leakage is avoided, and the use safety is.
Further, the controller 50 is electrically connected to the sensing electrode 20 through a wire 60, and specifically, the wire 60 is disposed between the insulation portion of the overflow prevention sensor and the controller.
in one embodiment of the present invention, preferably, at least one sensing electrode 20 is located at the edge of the porous film 30.
in this embodiment, at least one sensing electrode 20 is disposed at the edge of the porous film 30, and the sensing electrode 20 at the edge of the porous film 30 is more easily contacted with the liquid level, so that the detection effect of the overflow prevention sensor 1 is more accurate.
In one embodiment of the present invention, preferably, the substrate 10 is a ceramic substrate, a glass substrate, a plastic substrate, or a metal substrate; and/or sensing electrode 20 is a copper electrode, copper foil tape, gold electrode, platinum electrode, or graphite electrode.
In this embodiment, the substrate 10 is preferably a ceramic substrate, a glass substrate, a plastic substrate, a metal substrate, or the like, and the ceramic substrate has excellent electrical insulation performance, good thermal conductivity, high solderability, and high adhesion strength, and facilitates disposing components such as the sensing electrode and the porous membrane on the substrate; the glass substrate and the plastic substrate have lower production cost and are convenient to produce; the metal substrate has special magnetic conductivity and excellent heat dissipation, and the metal substrate has high mechanical strength and good processability. And/or, the sensing electrode 20 is preferably a copper electrode, a copper foil tape, a gold electrode, a platinum electrode or a graphite electrode, the copper electrode has good plasticity, can be formed by machining, forging, electroforming, wire cutting and the like, has good processing stability, and is easy to process and produce; the copper foil tape has good conductivity, easy processing and lower cost; the gold electrode and the platinum electrode have good accuracy and repeatability and long service life; the graphite electrode has good thermal shock resistance and corrosion resistance.
in one embodiment of the present invention, preferably, the sensing electrode 20 is fabricated by physical sputtering, screen printing, inkjet printing or conductive tape; and/or the porous membrane 30 is fabricated by chemical vapor deposition or incomplete combustion of a sol-gel.
In this embodiment, the sensing electrode 20 is manufactured by physical sputtering, screen printing, inkjet printing or conductive adhesive tape, the sensing electrode can be processed into any shape by the screen printing processing method, the processing method is flexible and various, the technology is easy to master, the processing price is low, and the method is suitable for processing and producing the sensing electrode; the ink-jet printing has high processing precision and is suitable for various base materials; the conductive adhesive tape is easy to process and low in cost; and/or, the porous membrane 30 is made by chemical vapor deposition or incomplete combustion sol-gel, the deposition film forming device of chemical vapor deposition is simple, and the composition and the characteristic of the porous membrane are conveniently controlled, the flexibility is large; the incomplete combustion sol-gel is suitable for preparing various novel materials, and has low cost and easy production.
In one embodiment of the present invention, the insulation 40 is preferably a waterproof tape or epoxy.
In this embodiment, the insulating portion 40 is preferably a waterproof tape or epoxy resin, and specifically, a waterproof insulating layer is formed by covering the portion of the sensing electrode 20 not in contact with the porous membrane 30 with an insulating tape or epoxy resin, so as to insulate and protect the sensing electrode 20, prevent the portion of the sensing electrode 20 not in contact with the porous membrane from water ingress and failure, and thus influence the service life of the anti-overflow sensor 1, ensure the quality of the product, and at the same time, avoid electric leakage, and ensure safety in use. Moreover, the cost of the waterproof adhesive tape and the epoxy resin is low, and the production cost of the anti-overflow sensor 1 can be effectively reduced.
As shown in fig. 2 to 4, according to a second aspect of the present invention, the present invention provides a cooking appliance having the overflow prevention sensor 1 provided in any one of the embodiments of the first aspect, so that the cooking appliance provided in the embodiments of the present invention has all the advantages of the overflow prevention sensor 1 provided in any one of the embodiments of the first aspect, which are not listed here.
As shown in fig. 2, in one embodiment of the present invention, preferably, the cooking appliance further comprises: the pot body 2 is provided with a handle 3 on the outer side wall of the pot body 2; the controller 50 of the overflow prevention sensor 1 is disposed in the handle 3, and the substrate 10, the sensing electrode 20 and the porous membrane 30 of the overflow prevention sensor 1 are disposed on the inner sidewall of the pot 2.
In this embodiment, the cooking utensil further comprises a pot body 2 and a handle 3 arranged on the outer side wall of the pot body 2, wherein the controller 50 of the anti-overflow sensor 1 is arranged in the handle 3, the handle 3 is positioned on the outer side wall of the pot body 2 and is far away from the liquid in the pot body 2, the controller 50 of the anti-overflow sensor 1 is arranged in the handle 3, so that the controller 50 of the anti-overflow sensor 1 can be effectively prevented from contacting the liquid in the pot body 2, and the service life of the controller 50 of the anti-overflow sensor 1 is prolonged; anti-overflow sensor 1's base plate 10, sensing electrode 20 and porous membrane 30 set up on the inside wall of the pot body 2, liquid takes place the boiling and produces the foam gradually when the liquid in the pot body 2 reaches the boiling point, base plate 10 with anti-overflow sensor 1, sensing electrode 20 and porous membrane 30 set up on the inside wall of the pot body 2, can make the foam that produces after the liquid boiling change and contact sensing electrode 20 and porous membrane 30, be more convenient for anti-overflow sensor 1 initiative detect the height of liquid level in the pot body 2, thereby judge whether liquid is about to overflow according to the liquid level height in the pot body 2, realize active overflow pot early warning, thereby the intelligent control of overflowing the pot has been promoted.
In one embodiment of the present invention, preferably, at least two sensing electrodes 20 are distributed along the height direction of the pan body 2.
In this embodiment, since the liquid level gradually rises from bottom to top when the liquid boils, the at least two sensing electrodes 20 are arranged to be distributed along the height direction of the pot body 2, so as to improve the detection accuracy of the anti-overflow sensor 1. Specifically, the position of the induction electrode 20 positioned below is higher than the initial liquid level in the pot body 2, at this time, at least two induction electrodes 20 are not in contact with the liquid, no induction voltage is generated, the temperature of the liquid rises along with the heating of the cooking utensil, the liquid boils and gradually generates foam when reaching the boiling point, when the liquid level rises or the foam spreads upwards to the induction electrode 20 positioned below, the liquid simultaneously enters the inside of the porous membrane 30 and evaporates, so as to generate an induction voltage, the area between the two electrodes, which is not in contact with the liquid, is an evaporation surface, the evaporation surface gradually decreases along with the rising of the liquid level or the foam, the induction voltage decreases accordingly, when the liquid level or the foam reaches the electrode positioned above, the induction voltage drops to about 0V, the controller 50 can effectively judge the liquid level height by detecting the change of the induction voltage, so as to realize active overflow early warning, thereby promoting the intelligent control of the overflowing pot.
As shown in fig. 1 and 2, in one embodiment of the present invention, preferably, the sensing electrode 20 includes a positioning sensing electrode 202, the positioning sensing electrode 202 is disposed at a height not exceeding the height of the other sensing electrodes 20, and the positioning sensing electrode 202 is located at the bottom of the porous film 30.
in this embodiment, the sensing electrode 20 includes the positioning sensing electrode 202, and the setting height of the positioning sensing electrode 202 does not exceed the setting height of other sensing electrodes 20, the positioning sensing electrode 202 is located at the bottom of the porous membrane 30, specifically, when the liquid level rises after heating and boiling or the foam generated by liquid boiling spreads upwards to the positioning sensing electrode 202, the liquid enters the inside of the porous membrane 30 and evaporates at the same time, thereby generating the induced voltage, the controller 50 can effectively judge that the current height of the liquid level reaches the positioning sensing electrode 202 by detecting the generated induced voltage, through reasonably setting the height of the positioning sensing electrode 202, the accuracy of the overflow pot early warning can be effectively improved, thereby the intelligent control of the overflow pot is improved.
As shown in fig. 3 and 4, in one embodiment of the present invention, preferably, the cooking appliance further includes: a pot body 2 having an opening; a cover body 4, wherein the cover body 4 covers the opening of the pot body 2; the cover body handle 5 is positioned at the top of the outer side of the cover body 4, and the controller 50 of the anti-overflow sensor 1 is arranged in the cover body handle 5; the substrate 10, the sensing electrode 20, and the porous film 30 of the overflow prevention sensor 1 are disposed inside the cover 4.
In this embodiment, the cooking utensil further comprises a pot body 2 with an opening and a cover body 4 covering the opening of the pot body 2, a cover body handle 5 is arranged at the top of the outer side of the cover body 4, the controller 50 of the anti-overflow sensor 1 is arranged in the cover body handle 5, the anti-overflow sensor 1 can be effectively prevented from contacting liquid in the pot body 2, and the service life of the controller 50 of the anti-overflow sensor 1 is prolonged; the substrate 10, the induction electrode 20 and the porous membrane 30 of the anti-overflow sensor 1 are arranged on the inner side of the cover body 4, a large amount of liquid in the pot body 2 can be vaporized before overflowing, liquefied water is generated on the cover body 4 and enters the porous membrane 30, induced voltage is generated after the liquid is evaporated again, the overflow detection characteristic is preposed, a signal about to boil can be received by the controller 50 before the liquid is boiled, the cooking utensil is controlled to be heated continuously, the detection is performed again after a period of time, the overflow is avoided when the complete boiling is achieved in the working process of the cooking utensil through multiple detection and heating, and the product quality is ensured.
in one embodiment of the present invention, preferably, the cooking appliance further comprises: a container 6 disposed inside the lid 4, the container 6 having a shape corresponding to the lid 4, the substrate 10, the sensing electrode 20, and the porous membrane 30 being disposed inside the container 6; a detection port is arranged on one side of the containing box 6 facing the pot body 2, the area of the porous membrane 30 positioned between the at least two sensing electrodes 20 is an anti-overflow sensitive area, and the anti-overflow sensitive area of the anti-overflow sensor 1 is positioned at the detection port.
In this embodiment, the inboard of lid 4 is provided with holds box 6, base plate 10, response electrode 20 and porous membrane 30 set up in holding box 6, it is equipped with the detection mouth towards one side of the pot body 2 to hold box 6, the region that is located between at least two response electrodes 20 of porous membrane 30 is anti-overflow sensitive area, anti-overflow sensitive area of anti-overflow sensor 1 is located detection mouth department, can enter into anti-overflow sensitive area by this detection mouth after the water vapor liquefaction that produces during the liquid boiling of the pot body 2, the boiling degree of liquid in the anti-overflow sensor 1 initiative detection pot body 2 of being more convenient for, thereby judge whether liquid is about to overflow, realize active overflow pot early warning, thereby the intelligent control of overflow pot has been promoted. The lead 60 for electrically connecting the sensing electrode 20 and the controller 50 is located in the containing box 6, and the containing box 6 can protect the lead 60 from short circuit caused by the contact between the lead 60 and liquid; further, the housing box 6 is shaped to fit the cover 4, facilitating mounting of the housing box 6 on the cover 4.
In one embodiment of the present invention, preferably, the substrate 10, the sensing electrode 20 and the porous film 30 are located on the inside top of the cover 4; or the substrate 10, the sensing electrode 20 and the porous film 30 are located at the edge of the cover 4.
In this embodiment, the substrate 10, the sensing electrode 20 and the porous film 30 are located on the top of the inner side of the cover 4, or the substrate 10, the sensing electrode 20 and the porous film 30 are located at the edge of the cover 4; when the substrate 10, the sensing electrode 20 and the porous film 30 are positioned on the top of the inner side of the cover 4, the substrate is in direct contact with the cover handle 5, so that the arrangement is convenient, and the appearance is simple; at the other preferred edge, the cover 4 usually has a certain curvature, and the cover can slide downward when the liquefied water accumulated inside the cover 4 is enough, and at this time, the time point of the overflow is closer to the time point, so that the judgment result is more reliable.
In one embodiment of the present invention, preferably, the cooking appliance further comprises: and the heating element is in communication connection with the controller 50, and the controller 50 is used for adjusting the working parameters of the heating element according to the detection value of the anti-overflow sensor 1.
In this embodiment, the controller 50 is connected to the heating element of the cooking appliance in a communication manner, and the controller 50 can adjust the operating parameters of the heating element according to the detection value of the anti-overflow sensor 1, so as to ensure that the cooking appliance does not overflow while reaching full boiling during operation, thereby improving the heating performance of the cooking appliance.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
in the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. an overfill prevention sensor, comprising:
A substrate;
The number of the induction electrodes is at least two, and at least two induction electrodes are arranged on the substrate;
A porous film attached to the substrate, the porous film being in contact with at least two of the sensing electrodes at the same time;
Insulation parts, the number of the insulation parts is equal to that of the induction electrodes, and one insulation part covers the part of one induction electrode, which is not in contact with the porous membrane; and
And the controller is electrically connected with the induction electrode.
2. The overfill prevention sensor of claim 1,
At least one of the sensing electrodes is located at an edge of the porous membrane.
3. The overfill prevention sensor of claim 1 or 2,
the substrate is a ceramic substrate, a glass substrate, a plastic substrate or a metal substrate; and/or
the induction electrode is a copper electrode, a copper foil tape, a gold electrode, a platinum electrode or a graphite electrode.
4. the overfill prevention sensor of claim 1 or 2,
The induction electrode is manufactured by physical sputtering, screen printing, ink-jet printing or a conductive adhesive tape; and/or
The porous membrane is fabricated by chemical vapor deposition or incomplete combustion of a sol-gel.
5. the overfill prevention sensor of claim 1 or 2,
The insulating part is waterproof adhesive tape or epoxy resin.
6. A cooking appliance, comprising:
the overfill prevention sensor of any of claims 1-5.
7. The cooking appliance of claim 6, further comprising:
The outer side wall of the pot body is provided with a handle;
The controller of the anti-overflow sensor is arranged in the handle, and the substrate, the sensing electrode and the porous membrane of the anti-overflow sensor are arranged on the inner side wall of the pot body.
8. The cooking appliance of claim 7,
At least two induction electrodes are distributed along the height direction of the pot body.
9. the cooking appliance of claim 8,
The induction electrodes comprise positioning induction electrodes, the setting height of the positioning induction electrodes is not more than that of other induction electrodes, and the positioning induction electrodes are located at the bottom of the porous membrane.
10. The cooking appliance of claim 6, further comprising:
a pot body having an opening;
A cover body covering the opening of the pot body;
the cover body handle is positioned at the top of the outer side of the cover body, and the controller of the anti-overflow sensor is arranged in the cover body handle;
The substrate, the sensing electrode and the porous membrane of the overflow prevention sensor are arranged on the inner side of the cover body.
11. The cooking appliance of claim 10, further comprising:
the accommodating box is arranged on the inner side of the cover body, the shape of the accommodating box is matched with that of the cover body, and the substrate, the induction electrode and the porous membrane are arranged in the accommodating box;
One side of the accommodating box, which faces the pot body, is provided with a detection port, the area of the porous membrane, which is positioned between at least two of the induction electrodes, is an anti-overflow sensitive area, and the anti-overflow sensitive area of the anti-overflow sensor is positioned at the detection port.
12. the cooking appliance of claim 10 or 11,
The substrate, the induction electrode and the porous membrane are positioned on the top of the inner side of the cover body; or
The substrate, the sensing electrode and the porous film are located at the edge of the cover body.
13. The cooking appliance according to any one of claims 6 to 11, further comprising:
The heating element is in communication connection with the controller, and the controller is used for adjusting the working parameters of the heating element according to the detection value of the anti-overflow sensor.
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| CN201810575182.3A CN110567550B (en) | 2018-06-06 | 2018-06-06 | Anti-overflow sensor and cooking utensil |
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