CN110351911B - Anti-overflow device and cooking utensil - Google Patents
Anti-overflow device and cooking utensil Download PDFInfo
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- CN110351911B CN110351911B CN201810283935.3A CN201810283935A CN110351911B CN 110351911 B CN110351911 B CN 110351911B CN 201810283935 A CN201810283935 A CN 201810283935A CN 110351911 B CN110351911 B CN 110351911B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
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Abstract
According to the anti-overflow device and the cooking utensil provided by the invention, the air inlet end of the air guide pipe is connected with the exhaust hole of the cooking utensil, the side wall of the air guide pipe is provided with the detection opening, and the first end of the air guide pipe is matched with the exhaust hole; the openings of the detection tubes are respectively covered with a film, and the film deforms according to the pressure difference on the two sides of the film so as to change the air pressure in the detection tubes and enable the conductive liquid in the detection tubes to move in the detection tubes; the control assembly, first lead wire and second lead wire are connected with the electrically conductive point on the both sides wall of detecting tube respectively, control assembly still is connected with cooking utensil's heating element, when electrically conductive liquid removed to electrically conductive point, first lead wire and second lead wire are linked together through electrically conductive point to form corresponding signal of telecommunication, the power that heating element can be adjusted to the signal of telecommunication, prevent to make the edible material in the interior pot produce the phenomenon of spilling over because of heating element power is too high, guaranteed to carry out early warning and control to cooking utensil's the phenomenon of spilling over.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an anti-overflow device and a cooking appliance.
Background
At present, cooking appliances (such as induction cookers and the like) popular in the market have 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 method in the related art is a passive anti-overflow structure design, for example, a water guide rib with a flow passage function is arranged around a heat dissipation hole of the induction cooker, a drain hole is arranged at the end part of the water guide rib, and when the overflow capacity of the induction cooker is large, water passes through the water guide rib and is quickly drained to the outside of the induction cooker through the drain hole; or detect the bubble generation state in the cooking utensil when the culinary art, when the bubble will spill over, carry out operations such as cooling to the cooking utensil, but passive anti-overflow goes out structural design and can't realize overflowing pot early warning and intelligent control, has the potential risk of anti-overflow inefficacy when the water yield is too big or heat too fast.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, an aspect of the present invention provides an overfill prevention device.
Yet another aspect of the present invention provides a cooking appliance.
In view of the above, the present invention provides a spill prevention device for a cooking appliance, the spill prevention device comprising: the air inlet end of the air guide pipe is connected with the exhaust hole of the cooking utensil, the side wall of the air guide pipe is provided with a detection opening, and the air inlet end is matched with the exhaust hole; the detection tube is provided with openings at two ends, the openings are respectively covered with a film, one end of the detection tube is matched with the detection opening, and the film deforms according to the pressure difference at two sides of the film so as to change the air pressure in the detection tube and enable the conductive liquid in the detection tube to move in the detection tube; the control assembly comprises a first lead and a second lead, the first lead and the second lead are respectively connected with the conductive points on the two side walls of the detection tube, the control assembly is also connected with the heating element of the cooking utensil, and when the conductive liquid moves to the conductive points, the first lead and the second lead are communicated through the conductive points.
The overflow preventing device comprises an air guide pipe, a detecting pipe and a control assembly, wherein the air inlet end of the air guide pipe is connected with the exhaust hole of the cooking utensil, the exhaust hole exhausts the air in the inner pot of the cooking utensil, the air enters the air guide pipe from the air inlet end and is exhausted from the other end of the air guide pipe, and the exhaust hole can exhaust air normally. The air inlet end of the air guide pipe is matched with the air outlet hole, so that air exhausted from the air outlet hole can completely enter the air guide pipe, and the air flow rate in the inner pot of the cooking utensil can be truly and effectively embodied in the air guide pipe. Meanwhile, a detection opening is formed in the side wall of the air duct, the detection tube is arranged at the detection opening, so that the detection tube is connected with the gas in the air duct through the detection opening, openings are formed in two ends of the detection tube, a film covers the openings, the film seals two ends of the detection tube, a sealed space is formed in the detection tube, movable conductive liquid is arranged in the detection tube, the conductive liquid can move in the detection tube according to air pressure, and a first lead and a second lead of the control assembly are respectively connected with different conductive points on the detection tube, so that when the conductive liquid in the detection tube moves to the conductive points, the first lead and the second lead are communicated through due to the conductive liquid being a conductor, a corresponding electric signal can be formed in the control assembly, and the control assembly is also connected with the heating element, the power of heating element can be adjusted to the signal of telecommunication of formation like this, prevents to have guaranteed to carry out early warning and control because of the too high phenomenon that makes the edible material in the interior pot produce and spill over of heating element power, avoids going to adjust heating element again when really spilling over, has improved the market competition of product.
Specifically, when cooking is carried out in the pot, due to the heating effect of the heating element, gas in the inner pot can be continuously discharged to the air guide pipe through the air discharge hole and is discharged to the outside through the air guide pipe. And because the heating is carried out continuously, the velocity of flow of combustion gas in the interior pot also increases constantly, and the gas velocity of flow is big more simultaneously, and gaseous pressure is less, can make the pressure in the air duct reduce gradually like this, the film of the one end of the test tube that is linked together with the air duct simultaneously, its both sides will have pressure differential, the pressure of the one side that contacts with the inside of air duct will be less than the pressure of the one side that contacts with the test tube inside, this film will be according to the pressure differential of both sides and carry out deformation like this, make the film can be gradually bloated towards the inside direction of test tube. Meanwhile, because the deformation of film can promote the space size in the detection tube, will make like this under the unchangeable condition of the total amount of air in the detection tube, the volume has been enlarged, can make the atmospheric pressure in the detection tube reduce like this undoubtedly. Meanwhile, the air pressure at the two ends of the conductive liquid at the original position in the detection tube is different, so that the conductive liquid can move towards one end close to the air guide tube, the film at one end close to the air guide tube deforms, and the air pressure between the end and the conductive liquid is smaller than the air pressure between the conductive liquid and the other end, so that the conductive liquid can move in the detection tube according to the air, the pressure at the two sides of the conductive liquid is rebalanced, the conductive liquid can move towards the air guide tube in the detection tube, and when the conductive liquid moves to the position of the conductive point, the conductive liquid can connect the two conductive points on the two side walls, so that a first lead and a second lead which are respectively connected with the two conductive points can be connected through the conductive liquid, and further, the control assembly generates an electric signal for controlling the heating element, and the heating element can acquire a signal that the flow rate of the air flow in the inner pot is too high, and then heating according to the prior power can cause or possibly cause the phenomenon of overflow in the inner pot, so that the overflow prevention device provided by the invention can adjust and control the heating element in the cooking appliance according to the cooking condition in the inner pot so as to realize intelligent adjustment.
Preferably, the conducting point sets up for relative from top to bottom, and when conducting liquid removed in the detecting tube like this, when conducting liquid removed to the conducting point, the conducting point that can be located both sides about will simultaneously switched on, and it is more accurate to guarantee to adjust, and simultaneously, the lateral wall of detecting tube is the insulating tube wall, can guarantee like this that conducting liquid can not switch on first lead wire and second lead wire when removing to other points except that conducting point.
In addition, the anti-overflow device provided by the above embodiment of the present invention further has the following additional technical features:
in any of the above technical solutions, preferably, when the conductive liquid does not move in the detection tube, a distance between the conductive point and the air duct is smaller than a distance between the conductive liquid and the air duct.
In this technical scheme, when initial position, when the conducting liquid did not appear in the test tube because of the deformation of film and moved in the test tube promptly, set up the distance between conducting point and the air duct to be less than the distance between conducting liquid and the air duct, when guaranteeing that the film deformation back is moving to the direction of air duct, the conducting point is located the rear side of conducting liquid direction of motion, and conducting liquid just contacts with the conducting point after the preset distance of motion.
In addition, when the conductive liquid does not move in the detection tube, the distance between the conductive point and the conductive liquid is a distance of a preset length, and the preset length is a distance which can be moved to complete the preset length and is contacted with the conductive point when the air pressure in the detection tube is reduced to the preset air pressure and the conductive liquid moves at a preset speed for a preset time.
In any of the above technical solutions, preferably, the gas-guide tube includes a pneumatic duct, an air inlet end of the pneumatic duct faces the exhaust port, and a sectional area of the air inlet end of the pneumatic duct is larger than a sectional area of the air outlet end of the pneumatic duct; the detection opening is positioned on the pipe section which is connected with the air outlet end of the pneumatic duct in the air duct.
In this technical scheme, the air duct includes pneumatic duct, and the one end of pneumatic duct is the inlet end, and the other end is for giving vent to anger the end, and the inlet end is towards the gas vent to set up pneumatic duct into the sectional area of inlet end and be greater than the sectional area of the end of giving vent to anger of pneumatic duct, and the inside sectional area that is of pneumatic duct reduces gradually, makes the air when the pneumatic duct of process, and the gas flow rate increases because of the runner narrows down. And the detection opening is positioned in the air guide pipe and is connected with the air outlet end of the pneumatic duct, and the pneumatic duct is arranged, so that when the air pressure in the air guide pipe is sensed through the film, the flow velocity is sensed by the film more easily by amplifying the air, and the effect of amplifying the air pressure signal is achieved.
Preferably, the pneumatic duct is set to be in a circular truncated cone shape, so that the interface of the pneumatic duct is smooth and continuous in the flowing direction of air, the resistance effect of the side wall of the pneumatic duct on the gas is effectively reduced when the section of the pneumatic duct is reduced, and the smooth flowing of the gas is ensured.
In any of the above technical solutions, preferably, the control assembly further includes two conductive metal sheets, the two conductive metal sheets are respectively disposed on the first lead and the second lead, and the first lead and the second lead are respectively connected to the conductive points through the two conductive metal sheets.
In the technical scheme, the conductive metal sheets are respectively arranged at the tail ends of the first lead and the second lead, so that the first lead and the second lead are arranged on the conductive points on the side wall of the detection tube by the conductive metal sheets, the first lead and the second lead can be respectively in contact with the two conductive points, and good contact is ensured, and the first lead and the second lead are not easy to fall off.
In any of the above solutions, preferably, the control assembly further comprises a regulator for reducing the power of the heating element when the first lead and the second lead are in communication through the conductive point.
In this technical scheme, the control assembly still includes the regulator, and the regulator is used for when first lead wire and second lead wire are linked together through the conducting point, adjusts heating element to reduce heating element's power, so that heating element's heating power is stepped down or is closed, and then can guarantee that the edible material in the interior pot can not appear the phenomenon that boils and spills over because of continuously heating.
Further, after the regulator reduces the heating power of the heating element, it is determined whether the conductive liquid is still moving at the conductive point, if the conductive liquid is still located at the conductive point within a preset time period, it indicates that the regulating force on the heating element is not enough, and thus further operations such as reducing the power of the heating element are required.
In any of the above technical solutions, preferably, the conductive liquid blocks the space inside the detection tube into two parts that are not communicated with each other.
In this technical scheme, set up the conducting liquid to in the detecting tube to when adopting the film to carry out the shutoff with the conducting liquid in the detecting tube, make the conducting liquid be located the detecting tube insidely, the conducting liquid is two parts that do not communicate each other with the inner space separation of detecting tube, and atmospheric pressure between two parts is equal, has guaranteed when initial condition (conducting liquid does not remove), and the conducting liquid who sets up at the detecting tube insidely can not remove.
In any of the above technical solutions, preferably, the detection tube is horizontally disposed at the detection opening.
In this technical scheme, with the test tube setting when detecting the opening part, for the level setting, set up the test tube through the level for the conducting liquid in the test tube can not move in the test tube because of the influence of gravity, and only can receive the effect of pressure to remove, has guaranteed that detection effect is true effective.
In any of the above technical solutions, preferably, one end of the detection tube, which is far away from the airway tube, is communicated with the outside through a membrane.
In the technical scheme, one end of the detection tube, which is far away from the air guide tube, is communicated with the outside through the film, so that when the heating element stops heating, the flow rate of gas in the air guide tube is reduced, the air pressure in the air guide tube returns to the normal pressure, and the film close to one side of the air guide tube loses the power of outward deformation. Keep away from the film and the external world of air duct one side and be linked together, external atmospheric pressure can obviously be greater than the atmospheric pressure in the test tube this moment, and the film can carry out deformation to the one side of keeping away from the air duct for original deformation to the air duct resumes, and then conducting liquid removes to the direction of keeping away from the air duct, and the circuit disconnection does not have electrical signal output, accomplishes automatic re-setting.
Another aspect of the present invention provides a cooking appliance, including the above-mentioned spill prevention device according to any one of the above-mentioned technical solutions, so that the cooking appliance has all the beneficial effects of the above-mentioned spill prevention device according to any one of the above-mentioned technical solutions, and details thereof are not repeated herein.
In any of the above technical solutions, preferably, the overflow preventing means is detachably disposed at an outer side of the upper cover of the cooking appliance.
In this technical scheme, can set up the outside at cooking utensil's upper cover with anti-overflow device with dismantling for anti-overflow device is the modularization, can carry out the adaptation with various cooking utensil and use, and anti-overflow device when carrying out the use, sets up in the outside of upper cover, convenient to detach, and convenience of customers washs in the use.
In any of the above solutions, preferably, the heating element comprises a coil disk.
In this technical scheme, with the inside coil panel that sets up of heating element for when controlling heating element, can control heating element's coil panel to anti-overflow device, the edible material in having guaranteed interior pot can not spill over.
Additional aspects and advantages in accordance with 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 device provided by an embodiment of the present invention.
Reference numerals:
wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
10 gas tubes, 102 pneumatic ducts, 12 detection tubes, 14 films, 16 conductive liquid, 18 control components, 182 first leads, 184 second leads, 186 conductive metal sheets and 20 heating elements.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to 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 otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
The provision of the overflow prevention device and the cooking appliance according to one embodiment of the present invention will be described below with reference to fig. 1.
As shown in fig. 1, the present invention provides a spill prevention device for a cooking appliance, the spill prevention device comprising: the air guide pipe 10 is characterized in that the air inlet end of the air guide pipe 10 is connected with an exhaust hole of the cooking utensil, a detection opening is formed in the side wall of the air guide pipe 10, and the first end of the air guide pipe is matched with the exhaust hole; the detection tube 12, both ends of the detection tube 12 have openings, cover the membrane 14 on the opening separately, one end of the detection tube 12 is fitted with detecting the opening, the membrane 14 deforms according to its pressure difference of both sides, in order to change the atmospheric pressure in the detection tube 12 and make the conducting liquid 16 in the detection tube 12 move in the detection tube 12; the control assembly 18, the control assembly 18 includes a first lead 182 and a second lead 184, the first lead 182 and the second lead 184 are respectively connected with the conductive points on the two side walls of the detecting tube 12, the control assembly 18 is also connected with the heating element 20 of the cooking utensil, when the conductive liquid 16 moves to the conductive points, the first lead 182 and the second lead 184 are communicated through the conductive points.
The anti-overflow device provided by the invention comprises an air duct 10, a detection tube 12 and a control assembly 18, wherein the air inlet end of the air duct 10 is connected with the exhaust hole of the cooking utensil, the exhaust hole exhausts the air in the inner pot of the cooking utensil, the air enters the air duct 10 from the air inlet end and is exhausted from the other end of the air duct 10, and the exhaust hole can exhaust air normally. The air inlet end of the air duct 10 is matched with the exhaust hole, so that air exhausted from the exhaust hole can completely enter the air duct 10, and the air flow speed in the inner pot of the cooking utensil can be really and effectively embodied in the air duct 10. Meanwhile, a detection opening is formed on the side wall of the airway tube 10, the detection tube 12 is arranged at the detection opening, so that the detection tube 12 is connected with the gas in the airway tube 10 through the detection opening, two ends of the detection tube 12 are provided with openings, the openings are covered with the film 14, the film 14 seals two ends of the detection tube 12, so that a sealed space is formed in the detection tube 12, the movable conductive liquid 16 is arranged in the detection tube 12, the conductive liquid 16 can move in the detection tube 12 according to the air pressure, and the first lead 182 and the second lead 184 of the control assembly 18 are respectively connected with different conductive points on the detection tube 12, so that when the conductive liquid 16 in the detection tube 12 moves to the conductive points, the conductive liquid 16 is a conductor, so that the first lead 182 and the second lead 184 are connected through by the conductive liquid 16, and a corresponding electric signal is formed in the control assembly 18, because the control assembly 18 is still connected with the heating element 20, the electric signal formed in this way can adjust the power of the heating element 20, the phenomenon that food materials in the inner pot overflow due to overhigh power of the heating element 20 is prevented, the phenomenon of overflow of the cooking utensil is ensured to be early warned and controlled, the heating element 20 is prevented from being adjusted when the food materials really overflow, and the market competitiveness of the product is improved.
Specifically, when cooking is performed in the pot, due to the heating effect of the heating element 20, the gas in the inner pot is continuously discharged to the gas guide tube 10 through the gas discharge hole and discharged to the outside through the gas guide tube 10. And because the heating is carried out continuously, the flow velocity of the gas discharged from the inner pot is increased continuously, and the gas flow velocity is larger, the pressure of the gas is smaller, so that the pressure in the gas guide tube 10 is reduced gradually, meanwhile, the pressure difference is formed between the two sides of the film 14 at one end of the detection tube 12 communicated with the gas guide tube 10, the pressure of one side in contact with the inside of the gas guide tube 10 is smaller than the pressure of one side in contact with the inside of the detection tube 12, and thus the film 14 deforms according to the pressure difference between the two sides, so that the film 14 gradually bulges towards the inside of the detection tube 12. Meanwhile, due to the deformation of the film 14, the size of the space in the detection tube 12 is increased, so that the volume is enlarged under the condition that the total amount of air in the detection tube 12 is not changed, and the air pressure in the detection tube 12 is undoubtedly reduced. Meanwhile, the air pressures at the two ends of the conductive liquid 16 at the original position in the detection tube 12 are different, so that the conductive liquid 16 moves to the end close to the airway tube 10, because the film 14 at the end close to the airway tube 10 deforms, the air pressure between the end and the conductive liquid 16 is smaller than the air pressure between the conductive liquid 16 and the other end, so that the conductive liquid 16 moves in the detection tube 12 according to the air, the pressures at the two sides of the conductive liquid 16 are rebalanced, the conductive liquid 16 moves in the detection tube 12 towards the airway tube 10, and when the conductive liquid 16 moves to the position of the conductive point, the conductive liquid 16 connects the two conductive points on the two side walls, so that the first lead 182 and the second lead 184 respectively connected with the two conductive points can be connected through the conductive liquid 16, and the control component 18 generates an electric signal for controlling the heating element 20, the heating element 20 can acquire a signal that the flow rate of the air flow in the inner pot is too high, and then the phenomenon of overflow in the inner pot can occur or can occur when heating is carried out according to the prior power, so that the anti-overflow device provided by the invention can adjust and control the heating element 20 in the cooking appliance according to the cooking condition in the inner pot, so as to realize intelligent adjustment.
Preferably, the conducting points are arranged up and down relatively, so that when the conducting liquid 16 moves in the detecting tube 12 and the conducting points on the upper and lower sides are switched on simultaneously when the conducting liquid 16 moves to the conducting points, it is ensured that the adjustment is more accurate, and meanwhile, the side wall of the detecting tube 12 is an insulating tube wall, so that it is ensured that when the conducting liquid 16 moves to other points except the conducting points, the conducting liquid 16 does not switch on the first lead 182 and the second lead 184.
In one embodiment of the present invention, it is preferred that the distance between the electrically conductive liquid 16 and the airway tube 10 is less than the distance between the electrically conductive liquid 16 and the airway tube 10 when the electrically conductive liquid 16 is not moving within the detection tube 12.
In this embodiment, in the initial position, that is, when the conductive liquid 16 in the detection tube 12 does not move in the detection tube 12 due to the deformation of the membrane 14, the distance between the conductive point and the airway tube 10 is set to be smaller than the distance between the conductive liquid 16 and the airway tube 10, so that when the membrane 14 moves towards the airway tube 10 after being deformed, the conductive point is located at the rear side of the movement direction of the conductive liquid 16, and the conductive liquid 16 contacts with the conductive point after moving for a preset distance.
In addition, when the conductive liquid 16 does not move in the detection tube 12, the distance between the conductive point and the conductive liquid 16 is a distance of a preset length, and the preset length is a distance that can move to complete the preset length and contact with the conductive point when the conductive liquid 16 moves at a preset speed for a preset time when the air pressure in the detection tube 12 is reduced to a preset air pressure.
In one embodiment of the present invention, preferably, the airway tube 10 comprises a pneumatic duct 102, an inlet end of the pneumatic duct 102 faces the outlet, a cross-sectional area of the inlet end of the pneumatic duct 102 is larger than a cross-sectional area of the outlet end of the pneumatic duct 102; the detection opening is located on the tube segment of the airway tube 10 that is connected to the outlet end of the pneumatic duct 102.
In this embodiment, the airway tube 10 includes a pneumatic duct 102, one end of the pneumatic duct 102 is an air inlet end, the other end is an air outlet end, the air inlet end faces the air outlet, and the pneumatic duct 102 is configured such that the cross-sectional area of the air inlet end is larger than that of the air outlet end of the pneumatic duct 102, and the cross-sectional area inside the pneumatic duct 102 is gradually reduced, so that the flow rate of the air is increased due to the narrowing of the flow passage when the air passes through the pneumatic duct 102. The detection opening is located in the air duct 10 and is connected with the pipe section that the end of giving vent to anger of pneumatic duct 102 is connected, through setting up pneumatic duct 102, has played when the atmospheric pressure through film 14 in to air duct 10 is perceived, and the velocity of flow is enlargied the air and is perceived by film 14 more easily, has played the effect of enlarging the atmospheric pressure signal.
Preferably, the pneumatic duct 102 is configured to be a circular truncated cone, so that the interface of the pneumatic duct 102 is smooth and continuous in the flowing direction of the air, which effectively reduces the resistance effect of the side wall of the pneumatic duct 102 on the gas when the cross section of the pneumatic duct 102 is reduced, and ensures smooth gas flow.
In one embodiment of the present invention, the control assembly 18 further preferably includes two conductive metal sheets 186, the two conductive metal sheets 186 are respectively disposed on the first lead 182 and the second lead 184, and the first lead 182 and the second lead 184 are respectively connected to the conductive points through the two conductive metal sheets 186.
In this embodiment, the conductive metal sheets 186 are respectively disposed at the ends of the first lead 182 and the second lead 184, so that the conductive metal sheets 186 dispose the first lead 182 and the second lead 184 on the conductive points on the side wall of the detection tube 12, thereby ensuring that the first lead 182 and the second lead 184 can respectively contact with the two conductive points, and ensuring good contact and being not easy to fall off.
In one embodiment of the present invention, the control assembly 18 preferably further includes a regulator for reducing the power to the heating element 20 when the first lead 182 and the second lead 184 are in communication through a conductive point.
In this embodiment, the control assembly 18 further includes a regulator, and the regulator is configured to regulate the heating element 20 when the first lead 182 and the second lead 184 are communicated with each other through the conductive point, and reduce the power of the heating element 20, so that the heating power of the heating element 20 is reduced or turned off, thereby ensuring that the food in the inner pot does not boil and overflow due to continuous heating.
Further, after the regulator reduces the heating power of the heating element 20, it is determined whether the conductive liquid 16 is still moving at the conductive point, for example, if the conductive liquid 16 is still located at the conductive point within a preset time period, it indicates that the regulating force for the heating element 20 is not enough, so that further operations such as reducing the power of the heating element 20 are required.
In one embodiment of the present invention, the conductive liquid 16 preferably blocks the space inside the detection tube 12 into two parts that are not in communication with each other.
In this embodiment, when the conductive liquid 16 is disposed in the detection tube 12 and the film 14 is used to seal the conductive liquid 16 in the detection tube 12, the conductive liquid 16 is located inside the detection tube 12, the conductive liquid 16 blocks the internal space of the detection tube 12 into two parts which are not communicated with each other, and the air pressure between the two parts is equal, so that the conductive liquid 16 disposed inside the detection tube 12 does not move in the initial state (the conductive liquid 16 does not move).
In one embodiment of the present invention, the detecting tube 12 is preferably horizontally disposed at the detecting opening.
In this embodiment, when the detecting tube 12 is disposed at the detecting opening, the detecting tube 12 is disposed horizontally, so that the conductive liquid 16 in the detecting tube 12 does not move in the detecting tube 12 due to the influence of gravity, but only moves under the action of pressure, thereby ensuring the real and effective detecting effect.
In one embodiment of the present invention, the end of the sensing tube 12 remote from the airway tube 10 is preferably in communication with the outside through a membrane 14.
In this embodiment, the end of the sensing tube 12 away from the airway tube 10 is connected to the outside through the membrane 14, so that when the heating element 20 stops heating, the flow rate of the gas in the airway tube 10 decreases, the pressure in the airway tube 10 returns to normal pressure, and the membrane 14 on the side close to the airway tube 10 loses the power of outward deformation. Keep away from film 14 and the external world of air duct 10 one side and be linked together, external atmospheric pressure can obviously be greater than the atmospheric pressure in the test tube 12 this moment, and film 14 can be to keeping away from one side of air duct 10 and carry out deformation for original deformation to air duct 10 resumes, and then conducting liquid 16 removes to the direction of keeping away from air duct 10, and the circuit disconnection does not have electrical signal output, accomplishes automatic re-setting.
Another aspect of the present invention provides a cooking appliance, including the above-mentioned spill prevention device according to any one of the above-mentioned technical solutions, so that the cooking appliance has all the beneficial effects of the above-mentioned spill prevention device according to any one of the above-mentioned technical solutions, and details thereof are not repeated herein.
In one embodiment of the present invention, it is preferable that the overflow preventing means is detachably provided at an outer side of the upper cover of the cooking appliance.
In this embodiment, set up the outside at cooking utensil's upper cover with anti-overflow device can dismantle for anti-overflow device is the modularization, can carry out the adaptation with various cooking utensil and use, and anti-overflow device when carrying out the use, sets up in the outside of upper cover, convenient to detach, and convenience of customers washs in the use.
In one embodiment of the present invention, the heating element 20 preferably comprises a coil disk.
In this embodiment, the coil panel is disposed inside the heating element 20, so that when the spill prevention device is used for controlling the heating element 20, the coil panel of the heating element 20 can be controlled, and it is ensured that the food material in the inner pot does not spill.
In the description of the present specification, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only 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 and operated in a specific orientation, 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 herein, 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 invention. In this specification, 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 is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (9)
1. A spill prevention device for a cooking appliance, the spill prevention device comprising:
the air inlet end of the air guide pipe is connected with the exhaust hole of the cooking utensil, a detection opening is formed in the side wall of the air guide pipe, and the air inlet end of the air guide pipe is matched with the exhaust hole;
the detection tube is provided with openings at two ends, the openings are respectively covered with a film, one end of the detection tube is matched with the detection opening, and the film deforms according to the pressure difference at two sides of the film so as to change the air pressure in the detection tube and enable the conductive liquid arranged in the detection tube to move in the detection tube;
the control assembly comprises a first lead and a second lead, the first lead and the second lead are respectively connected with conductive points on two side walls of the detection tube, the control assembly is also connected with a heating element of the cooking utensil, and when the conductive liquid moves to the conductive points, the first lead and the second lead are communicated through the conductive points;
the air guide pipe comprises a pneumatic duct, the air inlet end of the pneumatic duct faces the exhaust hole, and the sectional area of the air inlet end of the pneumatic duct is larger than that of the air outlet end of the pneumatic duct;
the detection opening is positioned on the pipe section which is connected with the air outlet end of the pneumatic duct in the air duct.
2. The overfill prevention device of claim 1,
when the conductive liquid does not move in the detection tube, the distance between the conductive point and the air guide tube is smaller than that between the conductive liquid and the air guide tube.
3. The overfill prevention device of claim 1,
the control assembly further comprises two conductive metal sheets, the two conductive metal sheets are arranged on the first lead and the second lead respectively, and the first lead and the second lead are connected with the conductive points through the two conductive metal sheets respectively.
4. The overfill prevention device of any of claims 1-3,
the control assembly further includes a regulator for reducing the power to the heating element when the first lead and the second lead are in communication through the conductive point.
5. The overfill prevention device of any of claims 1-3,
the conductive liquid blocks the space inside the detection tube into two parts which are not communicated with each other.
6. The overfill prevention device of any of claims 1-3,
the detection tube is horizontally arranged at the detection opening.
7. The overfill prevention device of any of claims 1-3,
and one end of the detection tube, which is far away from the air guide tube, is communicated with the outside through the film.
8. Cooking appliance, characterized in that it comprises a spill prevention device as claimed in any one of claims 1 to 7.
9. The cooking appliance of claim 8,
the overflow preventing device is detachably arranged on the outer side of the upper cover of the cooking utensil; and/or
The heating element comprises a coil disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283935.3A CN110351911B (en) | 2018-04-02 | 2018-04-02 | Anti-overflow device and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283935.3A CN110351911B (en) | 2018-04-02 | 2018-04-02 | Anti-overflow device and cooking utensil |
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| Publication Number | Publication Date |
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| CN110351911A CN110351911A (en) | 2019-10-18 |
| CN110351911B true CN110351911B (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810283935.3A Active CN110351911B (en) | 2018-04-02 | 2018-04-02 | Anti-overflow device and cooking utensil |
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| JP3320377B2 (en) * | 1999-03-19 | 2002-09-03 | 象印マホービン株式会社 | Pressure cooker |
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| CN2912117Y (en) * | 2006-06-16 | 2007-06-13 | 汕头市林百欣科学技术中等专业学校 | Viberation detector |
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| CN204318427U (en) * | 2014-11-18 | 2015-05-13 | 松下家电研究开发（杭州）有限公司 | Anti-overflow electric rice cooker |
| CN106618172A (en) * | 2016-12-13 | 2017-05-10 | 美的集团股份有限公司 | Pressure sensor and cooking utensil with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3320377B2 (en) * | 1999-03-19 | 2002-09-03 | 象印マホービン株式会社 | Pressure cooker |
| CN2647186Y (en) * | 2001-02-11 | 2004-10-13 | 方展崇 | Pressure electric cooker |
| CN2912117Y (en) * | 2006-06-16 | 2007-06-13 | 汕头市林百欣科学技术中等专业学校 | Viberation detector |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110351911A (en) | 2019-10-18 |
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