WO2018145491A1 - 浮子阀动作检测装置、锅盖组件及压力烹饪器具 - Google Patents

浮子阀动作检测装置、锅盖组件及压力烹饪器具 Download PDF

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Publication number
WO2018145491A1
WO2018145491A1 PCT/CN2017/108986 CN2017108986W WO2018145491A1 WO 2018145491 A1 WO2018145491 A1 WO 2018145491A1 CN 2017108986 W CN2017108986 W CN 2017108986W WO 2018145491 A1 WO2018145491 A1 WO 2018145491A1
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WO
WIPO (PCT)
Prior art keywords
spool
segment
hollow inductor
valve core
float valve
Prior art date
Application number
PCT/CN2017/108986
Other languages
English (en)
French (fr)
Inventor
彭锋
张帆
Original Assignee
佛山市顺德区美的电热电器制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201720121908.7U external-priority patent/CN206979340U/zh
Priority claimed from CN201720121912.3U external-priority patent/CN206822509U/zh
Application filed by 佛山市顺德区美的电热电器制造有限公司 filed Critical 佛山市顺德区美的电热电器制造有限公司
Priority to EP17895598.5A priority Critical patent/EP3581074B1/en
Priority to CA3048733A priority patent/CA3048733C/en
Priority to US16/483,741 priority patent/US11707152B2/en
Publication of WO2018145491A1 publication Critical patent/WO2018145491A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/0802Control mechanisms for pressure-cookers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/09Safety devices
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/09Safety devices
    • A47J27/092Devices for automatically releasing pressure before opening
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/32Time-controlled igniting mechanisms or alarm devices
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/004Cooking-vessels with integral electrical heating means
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/086Pressure-cookers; Lids or locking devices specially adapted therefor with built-in heating means
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/56Preventing boiling over, e.g. of milk

Definitions

  • the pressure cooking appliance After the pressure cooking appliance has finished cooking the food, if the pressure in the pot exceeds the safe range, the high temperature hot steam ejected from the pot will damage the user when the lid is opened. In order to check whether the pressure in the pot body is reduced to this safe range, the pressure cooking appliance will install a float valve in the upper cover part. When the valve core is pushed up by the pressure in the pot body, the pressure inside the product is too high, and the product cannot be opened safely. cover. Conversely, when the spool is in the non-cuffed state, it means that the pressure in the pot has been reduced to a safe range, and the product can be safely opened.
  • the present invention is directed to solving at least one of the technical problems existing in the prior art.
  • a third object of the present invention is to provide a pressure cooking appliance comprising the above described lid assembly.
  • the spool of the float valve is made of a material having a magnetic permeability and an air unequal, and when the pressure in the pot of the pressure cooking appliance exceeds a safe range, the spool moves from the first position to the second position under the pressure of the pot.
  • the volume of the valve core is changed in the hollow inductor, and the inductance of the hollow inductor is changed.
  • the detecting circuit determines the position of the spool by detecting the change of the inductance of the hollow inductor, thereby determining whether the opening is safe at this time.
  • This program changes the structure of the float valve spool, and uses the material with magnetic permeability and air to make the valve core, which removes the magnetic material body on the valve core in the old scheme.
  • the hollow inductor is fixedly mounted on the upper cover, and when the spool is in the first position, the hollow inductor is at least partially located above the spool, When the spool is moved to the second position by the pressure in the pot, the volume of the spool located in the hollow inductor is increased.
  • the hollow inductor when the spool is in the first position, the hollow inductor is at least partially located above the spool, and when the spool is pushed by the pressure in the pot to the second position, the volume of the spool in the hollow inductor increases, due to the spool
  • the permeability of the material is different from that of the air, so that the inductance of the hollow inductor is changed. Specifically, if the permeability of the valve core material is less than air, the inductance of the hollow inductor will decrease, if the permeability of the valve core material is greater than The inductance of the air and the hollow inductor will increase.
  • the detection circuit detects that the increase or decrease of the inductance of the hollow inductor reaches the corresponding preset value, it is determined that the spool is pushed by the pressure in the pot to the second position, thereby determining If the pressure in the pot exceeds the safe range, the opening is unsafe at this time; after the pressure in the pot drops to a safe range, the spool automatically falls back to the first position, and the volume of the spool in the hollow inductor is reduced, if the valve core material If the magnetic permeability is smaller than air, the inductance of the hollow inductor will increase. If the permeability of the valve core material is greater than air, the inductance of the hollow inductor will decrease.
  • valve body Upon detecting the amount of increase or decrease the amount of air core inductor coil inductance reaches a corresponding preset value, the valve body has dropped to a first determined position, thereby determining the pressure pot dropped within a safe range, then opening the lid safety.
  • the hollow inductor is fixedly mounted on the upper cover, and when the spool is in the first position, the spool is at least partially located in the hollow inductor, the spool The volume of the spool located within the hollow inductor is reduced as the pressure is urged to move to the second position.
  • the inductance of the hollow inductor will increase, and the detection circuit is When it is detected that the increase or decrease of the inductance of the hollow inductor reaches the corresponding preset value, it is determined that the spool has fallen back to the first position, thereby determining that the pressure in the pot has fallen within a safe range, and the cover is safe at this time.
  • the valve body is made of aluminum.
  • the detecting circuit includes a controller, and the detecting circuit converts a change in inductance of the air-core inductor into an electrical signal input to the controller, and the controller is used to The electrical signal is detected, and a control signal is output according to the detection result.
  • the float valve further includes a valve seat, the valve seat is fixedly mounted on the upper cover, the valve seat is provided with a mounting hole, and the valve core is slidably Installed in the mounting hole.
  • a bottom of the valve body is protruded from a lower end of the mounting hole, and a bottom of the valve body is mounted with a gasket for sealing the spool The gap between the valve body and the mounting hole is sealed in the second position.
  • the program changes the relative position of the valve core and the hollow inductor in the height direction.
  • the spool When the spool is not lifted by the pressure in the pot, at least a part of the spool protrudes into the center of the hollow inductor, so that the design reduces the spool and the hollow inductor.
  • the required installation space of the coil in the height direction, thereby reducing the upper cover The thickness enhances the aesthetics of the product while saving the amount of material used in the upper cover to reduce the production cost of the product.
  • the solution also provides a through hole at the top of the upper cover mounting cavity.
  • the valve core is made of a material with different magnetic permeability and air permeability, and the whole valve core is integrally formed during production, so that the design process of the valve core is simple, and the production efficiency of the product can be improved.
  • the volume of the segment and the second segment are not equal, so that the magnetic reluctance of the first segment and the second segment are not equal, so as to ensure that the inductance of the hollow inductor is changed after the valve core is jacked up, so that the detecting circuit passes through the hollow inductor.
  • the change in inductance determines whether the spool is lifted up, thereby determining whether the opening is safe at this time.
  • one of the first segment and the second segment is provided with a distinguishing portion that is outwardly convex or inwardly recessed, so that the first segment and the first segment The two sections are not the same size.
  • the solution makes the volume of the first section and the second section unequal by providing protrusions or grooves on one of the first section and the second section of the valve core, so that the design and processing of the valve core is difficult.
  • the magnetic material body has a great influence on the inductance of the hollow inductor.
  • the magnetic material body is disposed on the first or second section of the valve core, so that when the position of the valve core changes, the inductance of the hollow inductor changes greatly.
  • the detection circuit is easily detected, thereby improving the reliability of the float valve motion detecting device.
  • An embodiment of the third aspect of the invention provides a pressure cooking appliance comprising: a pot body and a lid assembly provided by any of the embodiments of the second aspect of the invention.
  • the detecting circuit in the lid assembly may be completely located on the upper cover, or may be partially located on the upper cover, and the rest is located on the pot body.
  • the pressure cooking appliance provided by the embodiment of the third aspect of the present invention has the lid assembly provided by any one of the second aspects of the present invention, and thus the pressure cooking appliance has all the beneficial effects of the lid assembly provided by any of the above embodiments. I will not repeat them here.
  • FIG. 1 is a schematic structural view of a float valve motion detecting device and an upper cover assembled according to an embodiment of the present invention
  • Figure 3 is an enlarged schematic view of a portion B of Figure 2;
  • Figure 4 is a schematic view showing the structure of the float valve action detecting device shown in Figure 2 in a state in which the spool is in a jacked state;
  • Figure 5 is an enlarged schematic view of a portion C of Figure 4.
  • FIG. 6 is a schematic structural view of a lid assembly according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional structural view of the lid assembly D-D of Figure 6;
  • Figure 8 is a schematic enlarged view of the portion E of Figure 7;
  • Figure 10 is an enlarged schematic view showing a portion F of Figure 9;
  • FIG 11 is a schematic structural view of the valve core of Figure 7;
  • Figure 12 is a schematic view showing the structure of a valve body according to another embodiment of the present invention.
  • An embodiment of the first aspect of the present invention provides a float valve action detecting apparatus for a pressure cooking appliance, comprising: a float valve, a hollow inductor, and a detecting circuit.
  • the spool of the float valve is made of a material having a magnetic permeability different from that of the air, and the valve core can be movably mounted on the upper cover of the pressure cooking appliance.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the float valve action detecting device comprises: a float valve and a hollow inductor wire. a ring 3 and a detecting circuit, the float valve comprising a valve body 2 made of a material having a magnetic permeability lower than air, the valve body 2 being movably mounted on the upper cover 1 of the pressure cooking appliance, the spool 2 being capable of being in the pressure cooking appliance
  • the pressure in the pot is pushed from the first position to the second position, and the hollow inductor 3 is fixedly mounted on the upper cover 1.
  • the hollow inductor 3 is at least partially located above the spool 2.
  • the hollow inductor 3 when the spool 2 is in the first position, the hollow inductor 3 is at least partially located above the spool 2, and when the spool 2 is pushed by the pressure in the pot to the second position, the volume of the spool 2 in the hollow inductor 3 is Increasing, since the magnetic permeability of the material of the valve core 2 is less than the air, the inductance of the hollow inductor 3 is reduced, and the detecting circuit detects that the inductance reduction of the hollow inductor 3 reaches a preset value, and determines that the spool 2 is potted. The internal pressure is pushed to the second position to determine that the pressure in the pot exceeds the safe range.
  • the opening of the cover is unsafe; after the pressure in the pot falls within the safe range, the spool 2 automatically falls back to the first position, and the spool 2 is located in the hollow inductor.
  • the volume in the coil 3 is reduced, so that the inductance of the hollow inductor 3 is increased.
  • the detection circuit detects that the inductance increase of the hollow inductor 3 reaches a preset value, it is determined that the spool 2 has fallen back to the first position, thereby determining The pressure in the pot drops to a safe range, at which point the cover is safe.
  • the float valve action detecting device comprises: a float valve, a hollow inductor and a detecting circuit, the float valve comprises a valve core made of a material having a magnetic permeability lower than air, and the valve core can be movably mounted on the upper cover of the pressure cooking appliance, the spool The air core can be fixedly mounted on the upper cover by the pressure in the pot of the pressure cooking appliance, and the air core coil is fixedly mounted on the upper cover. When the valve core is in the first position, the valve core is at least partially located in the hollow inductor coil.
  • the detecting circuit comprises a controller, and the detecting circuit converts the inductance variation of the hollow inductor 3 into an electrical signal input controller, and the controller is configured to detect the electrical signal and output according to the detection result. control signal.
  • the float valve action detecting device further includes a prompting device.
  • the controller sends a control signal to the prompting device to cause the prompting device to emit a corresponding photoelectric and/or audible prompt signal, causing the user's attention and notifying. It is safe for the user to open the cover at this time, to prevent the user from opening the cover when the pressure in the pot exceeds the safe range, so as to improve the safety of the product.
  • the float valve further includes a valve seat 4, and the valve seat 4 is fixedly mounted on the upper cover 1, and the valve seat 4 is provided with a mounting hole, the valve core 2 slidably mounted in the mounting hole.
  • the first section of the valve core 2 protrudes into the hollow inductor 3 Center
  • the second section of the spool 2 protrudes into the center of the hollow inductor 3
  • the magnetic resistances of the first section and the second section are not equal
  • the detecting circuit and the hollow inductor 3 The electrical connection is used for detecting the change of the inductance of the hollow inductor 3, and determining the position of the spool 2 according to the change of the inductance; wherein, when the spool 2 is pushed up by the pressure in the pot, the top of the spool 2 passes through the through hole 11 Extend the cover 1 outside.
  • the solution changes the relative position of the spool 2 and the hollow inductor 3 in the height direction.
  • the spool 2 is not lifted by the pressure in the pot, at least a part of the spool 2 protrudes into the center of the hollow inductor 3, so that the design is reduced.
  • the required installation space of the valve core 2 and the hollow inductor 3 in the height direction can reduce the thickness of the upper cover 1 and improve the aesthetics of the product, and at the same time save the amount of material used for the upper cover 1 to reduce the production cost of the product.
  • the solution is also provided with a through hole 11 at the top of the mounting cavity of the upper cover 1.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the spool 2 is made of a material having a magnetic permeability different from that of the air permeability, and the volumes of the first and second sections of the spool 2 are not equal.
  • the valve core 2 is made of a material having a magnetic permeability and an air permeability, and the entire valve core 2 is integrally formed during production, so that the production process of the valve core 2 is simple, and the production efficiency of the product can be improved.
  • the volume of the first segment and the second segment of the spool 2 are not equal, so that the magnetic resistances of the first segment and the second segment are unequal to ensure that the inductance of the hollow inductor 3 is generated after the spool 2 is jacked up.
  • the change is made so that the detecting circuit judges whether the spool 2 is jacked up by the change in the inductance of the air-core inductor 3, thereby determining whether the opening of the cover is safe at this time.
  • the volume in 3 is reduced to change the inductance of the hollow inductor 3, and the detecting circuit determines whether the spool 2 is lifted by detecting the change in the inductance of the hollow inductor 3, thereby determining whether the opening is safe at this time.
  • the first section of the spool 2 is provided with a groove 21 so that the first section and the second section are unequal in volume, and when the spool 2 is not jacked up by the pressure in the pot, The groove 21 is located in the hollow inductor 3, and when the valve core 2 is jacked up by the pressure in the pot, the position of the spool 2 is raised, and the groove 21 is disengaged from the hollow inductor 3, so that the spool 2 is located in the hollow inductor 3.
  • the volume is increased to change the inductance of the hollow inductor 3, and the detecting circuit determines whether the spool 2 is lifted by detecting the change in the inductance of the hollow inductor 3, thereby determining whether the opening is safe at this time.
  • first portion and the second portion of the valve body 2 may be respectively provided with a distinguishing portion which is convexly outwardly or inwardly recessed, and the volume of the distinguishing portion on the first segment is different from the portion on the second segment.
  • the volumes are not equal so that the first and second segments are unequal in volume.
  • the first or second section of the valve core is provided with a body of magnetic conductive material, and the magnetic permeability of the material of the valve core and the magnetic permeability of the body of the magnetic conductive material are not equal.
  • a magnetically permeable material body may also be respectively disposed on the first segment and the second segment of the valve core, and the magnetic permeability of the magnetic conductive material body and the magnetic permeability of the production material of the valve core are different, and the magnetic permeability on the first segment is The volume of the body of material is unequal with the volume of the body of magnetically permeable material on the second section.
  • the spool is made of aluminum.
  • the magnetic permeability of aluminum is less than that of air.
  • the inductance of the hollow inductor can be changed, and the density of aluminum is small.
  • the valve core uses aluminum as the production material to avoid the weight of the spool. Large, to ensure that the weight of the part meets the design requirements, in order to prevent the problem that the pressure inside the pot can not be lifted.
  • the detecting circuit comprises a controller, and the detecting circuit converts the inductance change of the hollow inductor into an electric signal input controller, and the controller is configured to detect the electrical signal and output the control according to the detection result. signal.
  • the detection circuit includes a controller.
  • the inductance of the hollow inductor changes correspondingly.
  • the detection circuit converts the change of the inductance into an electrical signal input controller for detection and analysis to determine whether the spool is
  • the controller can send a control signal to the connected electrical device according to the result of the detection and analysis of the electrical signal, that is, whether the valve core is jacked up, to control the electrical device. Work accordingly.
  • the lid assembly further includes: a prompting device electrically connected to the controller for emitting a photoelectric and/or audible prompt under the control of the controller.
  • the prompting device comprises: an indicator light and/or a buzzer and/or a display screen.
  • the float valve further includes a valve seat 4, and the valve seat 4 is fixedly mounted on the upper cover 1, and the valve seat 4 is provided with a mounting hole and a valve core. 2 slidably mounted in the mounting hole.
  • the bottom of the valve body 2 protrudes from the lower end of the mounting hole, and the bottom of the valve body 2 is mounted with a gasket 5 for the valve core 2 to be lifted when the valve core 2 is jacked up The gap between the spool 2 and the mounting hole is sealed.
  • An embodiment of the third aspect of the invention provides a pressure cooking appliance comprising: a pot body and a lid assembly provided by any of the embodiments of the second aspect of the invention.
  • the detecting circuit in the lid assembly may be completely located on the upper cover, or may be partially located on the upper cover, and the rest is located on the pot body.
  • the pressure cooking appliance provided by the embodiment of the third aspect of the present invention has the lid assembly provided by any one of the second aspects of the present invention, and thus the pressure cooking appliance has all the beneficial effects of the lid assembly provided by any of the above embodiments. I will not repeat them here.
  • a float valve action detecting device for a pressure cooking appliance comprising: a float valve, a hollow inductor, and a detecting circuit, the float valve including a spool made of a material having a magnetic permeability different from air, a spool movably mounted on the upper cover of the pressure cooking appliance, the spool being movable from a first position to a second position under pressure in the pot of the pressure cooking appliance; the detection circuit and the The hollow inductor is electrically connected to detect a change in the inductance of the hollow inductor, and the position of the spool is determined according to the change in the inductance;
  • volume of the spool in the hollow inductor is less than or greater than the volume of the spool in the hollow inductor when in the second position.
  • the hollow inductor is fixedly mounted on the upper cover.
  • the hollow inductor When the spool is in the first position, the hollow inductor is at least partially located above the spool, and the spool is pushed in the pot.
  • the spool When moving down to the second position, the spool is located in the hollow inductor The volume increases.
  • the hollow inductor coil is fixedly mounted on the upper cover.
  • the spool When the spool is in the first position, the spool is at least partially located in the hollow inductor, and the spool moves under the pressure of the pot to In the second position, the volume of the spool located within the hollow inductor is reduced.
  • the spool is made of aluminum.
  • the detecting circuit includes a controller, and the detecting circuit converts a change in the inductance of the hollow inductor into an electric signal and inputs the controller, wherein the controller is configured to detect the electrical signal and output according to the detection result. control signal.
  • the float valve action detecting device further comprising:
  • a prompting device is electrically coupled to the controller for emitting a photoelectric and/or audible prompt under the control of the controller.
  • the float valve further includes a valve seat fixedly mounted on the upper cover, the valve seat being provided with a mounting hole, and the valve body is slidably mounted in the mounting hole.
  • a bottom of the spool protrudes from a lower end of the mounting hole, and a bottom of the spool is mounted with a gasket for sealing the spool when the spool is in the second position The gap between the mounting holes is sealed.
  • a pressure cooking appliance comprising: an upper cover, a pot body, and the float valve motion detecting device according to any one of the items 1 to 8.
  • the pressure cooking appliance is an electric pressure cooker or a pressure rice cooker.
  • a lid assembly for a pressure cooking appliance comprising:
  • the upper cover is provided with a mounting cavity, and the top of the mounting cavity is provided with a through hole;
  • the float valve action detecting device comprises: a float valve, a hollow inductor coil and a detecting circuit, the hollow inductor coil is fixedly mounted in the mounting cavity, the float valve comprises a valve core, the valve The core can be movably mounted in the mounting cavity, and when the spool is not jacked up by the pressure in the pot, the first section of the spool protrudes into the center of the hollow inductor, and the spool is jacked up by the pressure in the pot The second section of the spool extends into the center of the hollow inductor, and the magnetic resistances of the first segment and the second segment are not equal, and the detecting circuit is electrically connected to the hollow inductor a method for detecting a change in inductance of the hollow inductor, and determining a position of the spool according to a change in inductance;
  • valve core when the valve core is jacked up by the pressure in the pot, the top of the valve core protrudes out of the upper cover through the through hole.
  • the volume of the first segment and the second segment are not equal, and the magnetic permeability of the production material of the valve core is different from the magnetic permeability of the air.
  • One of the first segment and the second segment is provided with a different portion that is outwardly convex or inwardly recessed such that the first segment and the second segment are unequal in volume.
  • Distinguishing portions that are outwardly convex or inwardly recessed are respectively disposed on the first segment and the second segment, and a volume of the distinguishing portion on the first segment is different from a portion on the second segment
  • the volumes are unequal to make the first segment and the second segment unequal in volume.
  • the first segment or the second segment is provided with a body of magnetically permeable material, and the magnetic permeability of the body of the magnetically permeable material is different from the permeability of the material of the valve core.
  • the first segment and the second segment are respectively provided with a body of magnetic conductive material, the magnetic permeability of the body of the magnetically permeable material is different from the magnetic permeability of the material of the valve core, and the first segment is The volume of the body of magnetically permeable material is unequal to the volume of the body of magnetically permeable material on the second section.
  • the spool is made of aluminum.
  • the detecting circuit includes a controller that converts a change in inductance of the air-core inductor into an electrical signal input to the controller, and the controller is configured to perform the electrical signal Detect and output a control signal based on the detection result.
  • a prompting device is electrically coupled to the controller for emitting a photoelectric and/or audible prompt under the control of the controller.
  • a pressure cooking appliance comprising: a pot body and a lid assembly according to any one of clauses 11 to 19.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)

Abstract

一种浮子阀动作检测装置、锅盖组件及压力烹饪器具,浮子阀动作检测装置包括:浮子阀、空心电感线圈(3)和检测电路。浮子阀的阀芯(2)由导磁率与空气不等的材料制成,阀芯(2)被锅内压力由第一位置推动至第二位置时,阀芯(2)位于空心电感线圈(3)内的体积变化,使空心电感线圈(3)的电感量产生变化,检测电路通过检测空心电感线圈(3)的电感量变化判断阀芯(2)位置,从而判定此时开盖是否安全。通过改变浮子阀阀芯(2)的结构,采用导磁率与空气不等的材料制造阀芯(2),去除了旧方案中阀芯上的导磁材料体,不但节省了生产材料,还省去了导磁材料体和阀芯(2)上导磁材料安装部的加工工序,以及导磁材料体与阀芯(2)的装配工序,从而可降低生产成本、并提高生产效率。

Description

浮子阀动作检测装置、锅盖组件及压力烹饪器具
本申请要求于2017年2月10日提交中国专利局、申请号为201720121912.3、发明名称为“浮子阀动作检测装置及压力烹饪器具”、于2017年2月10日提交中国专利局、申请号为201720121908.7、发明名称为“锅盖组件及压力烹饪器具”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及烹饪器具领域,更具体而言,涉及一种浮子阀动作检测装置,一种具有该浮子阀动作检测装置的锅盖组件,及一种具有该锅盖组件的压力烹饪器具。
背景技术
压力烹饪器具烹饪完食物后,若锅内压力超过安全范围,开盖时,锅体内喷出的高温热蒸汽会对用户产生伤害。为检测锅体内压力是否降低到这个安全范围内,压力烹饪器具均会在上盖部分安装一个浮子阀,当阀芯被锅体内压力顶起后,即表示产品内压力过高,产品不能安全开盖。相反,当阀芯处于非顶起状态时,即表示锅体内压力已降低到安全范围,此时产品可安全开盖。
旧产品设计方案在浮子阀的阀芯上方设计有空心电感线圈,阀芯上端具有一段导磁材料体,阀芯被锅内压力顶起,导磁材料体插入空心电感线圈中心,使空心电感线圈电感量增大,检测电路将电感量的变化转换成电信号,产品再根据该电信号输出光电或声音提醒用户不能打开锅盖;锅内压力下降到安全范围内,阀芯自动降落,导磁材料体脱离空心电感线圈中心,空心电感线圈电感量减少,检测电路将信号转换为电信号,并将该信号输出光电或声音提醒用户可安全打开锅盖。
此方案因需在阀芯上端固定一导磁材料体,所以在装配前,需在阀芯顶部加工一凹槽,并加工好一段导磁材料体,然后将加工好的导磁体通过工装压入凹槽内固定。此方案需增加加工工序以及零件(导磁材料体),所以整个浮子阀组件成本较高。在市场竞争日益激烈的今天,降低生产成本、提高生产效率是企业立于不败之地最有效的方法之一。所以该旧品方案存在较大改进空间。
发明内容
本发明旨在解决现有技术中存在的技术问题至少之一。
为此,本发明的一个目的在于,提供一种成本低的浮子阀动作检测装置。
本发明的第三个目的在于,提供一种锅盖组件,包括上述浮子阀动作检测装置。
本发明的第三个目的在于,提供一种压力烹饪器具,包括上述锅盖组件。
为实现上述目的,本发明第一个方面的实施例提供了一种浮子阀动作检测装置,用于压力烹饪器具,其特征在于,包括:浮子阀、空心电感线圈和检测电路,所述浮子阀包括由导磁率与空气不等的材料制成的阀芯,所述阀芯能够活动地安装在所述压力烹饪器具的上盖上,所述阀芯能够在所述压力烹饪器具的锅内压力推动下由第一位置运动至第二位置;所述检测电路与所述空心电感线圈电连接,用于检测所述空心电感线圈的电感量变化,并根据电感量变化判断所述阀芯的位置;其中,所述阀芯在所述第一位置时位于空心电感线圈内的体积小于或大于在所述第二位置时位于所述空心电感线圈内的体积。
本方案中,浮子阀的阀芯由导磁率与空气不等的材料制成,压力烹饪器具的锅内压力超过安全范围时,阀芯在锅内压力推动下由第一位置运动至第二位置,阀芯位于空心电感线圈内的体积产生变化,使空心电感线圈的电感量产生变化,检测电路通过检测空心电感线圈的电感量变化判断阀芯位置,从而判定此时开盖是否安全。本方案改变了浮子阀阀芯的结构,采用导磁率与空气不等的材料制造阀芯,去除了旧方案中阀芯上的导磁材料体,这样设计不但节省了生产材料,同时还省去了导磁材料体和阀芯上 导磁材料安装部的加工工序,以及导磁材料体与阀芯的装配工序,从而可降低产品的生产成本、并提高产品的生产效率,进而使企业在行业竞争中取得优势。
根据本发明的一个实施例,所述空心电感线圈固定安装在所述上盖上,所述阀芯处于所述第一位置时,所述空心电感线圈至少局部位于所述阀芯的上方,所述阀芯在锅内压力推动下运动至所述第二位置时,所述阀芯位于所述空心电感线圈内的体积增大。
本方案中,阀芯处于第一位置时,空心电感线圈至少局部位于阀芯上方,阀芯被锅内压力推动至第二位置时,阀芯位于空心电感线圈内的体积增大,由于阀芯材料的导磁率与空气不等,使得空心电感线圈的电感量产生变化,具体地,若阀芯材料的导磁率小于空气,空心电感线圈的电感量会减小,若阀芯材料的导磁率大于空气,空心电感线圈的电感量会增大,检测电路在检测到空心电感线圈电感的增大量或减小量达到相应预设值时,判定阀芯被锅内压力推动至第二位置,从而判定锅内压力超过安全范围,此时开盖不安全;锅内压力降到安全范围内后,阀芯自动回落至第一位置,阀芯位于空心电感线圈内的体积减小,若阀芯材料的导磁率小于空气,空心电感线圈的电感量会增大,若阀芯材料的导磁率大于空气,空心电感线圈的电感量会减小,检测电路在检测到空心电感线圈电感的增大量或减小量达到相应预设值时,判定阀芯已回落到第一位置,从而判定锅内压力降到了安全范围内,此时开盖安全。
根据本发明的一个实施例,所述空心电感线圈固定安装在所述上盖上,所述阀芯处于所述第一位置时,所述阀芯至少局部位于空心电感线圈内,所述阀芯在锅内压力推动下运动至所述第二位置时,所述阀芯位于所述空心电感线圈内的体积减小。
本方案中,阀芯处于所述第一位置时,阀芯至少局部位于空心电感线圈内,阀芯被锅内压力推动至第二位置时,阀芯位于空心电感线圈中心的部分完全或局部由空心电感线圈内脱出,使阀芯位于空心电感线圈内的体积减小,由于阀芯材料的导磁率与空气不等,使得空心电感线圈的电感量产生变化,具体地,若阀芯材料的导磁率小于空气,空心电感线圈的电感 量会增大,若阀芯材料的导磁率大于空气,空心电感线圈的电感量会减小,检测电路在检测到空心电感线圈电感的增大量或减小量达到相应预设值时,判定阀芯被锅内压力推动至第二位置,从而判定锅内压力超过安全范围,此时开盖不安全;锅内压力降到安全范围内后,阀芯自动回落至第一位置阀芯位于空心电感线圈内的体积增大,若阀芯材料的导磁率小于空气,空心电感线圈的电感量会减小,若阀芯材料的导磁率大于空气,空心电感线圈的电感量会增大,检测电路在检测到空心电感线圈电感的增大量或减小量达到相应预设值时,判定阀芯已回落至第一位置,从而判定锅内压力降到了安全范围内,此时开盖安全。
在上述任一技术方案中,优选地,所述阀芯为铝制件。
铝的导磁率小于空气,且密度较小,阀芯选用铝作为生产材料,可避免阀芯重量过大,保证零件的重量满足设计要求,以防止出现锅内压力超限阀芯仍无法被锅内压力推动至第二位置的问题。
在上述任一技术方案中,优选地,所述检测电路包括控制器,所述检测电路将所述空心电感线圈的电感量变化转换成电信号输入所述控制器,所述控制器用于对所述电信号进行检测,并根据检测结果输出控制信号。
本方案中,检测电路包括控制器,当阀芯位置变化时,空心电感线圈的电感量产生相应变化,检测电路将电感量的变化转换成电信号输入控制器进行检测分析,以判断阀芯位置,在此基础上,优选地,控制器可根据对上述电信号的检测分析结果,即阀芯位置的判断结果,向相连接的电器件发送控制信号,以控制这些电器件进行相应工作。
在上述任一技术方案中,优选地,所述浮子阀动作检测装置还包括:提示装置,与所述控制器电连接,用于在所述控制器的控制下发出光电和/或声音提示。
本方案中,浮子阀动作检测装置还包括提示装置,阀芯位置变化时,控制器向提示装置发送控制信号,使提示装置发出相应的光电和/或声音提示信号,引起用户的注意,告知用户此时开盖是否安全,避免用户在锅内压力超出安全范围时开盖,以提升产品的安全性。
可选地,所述提示装置包括:指示灯和/或蜂鸣器和/或显示屏。
在上述任一技术方案中,优选地,所述浮子阀还包括阀座,所述阀座固定安装在所述上盖上,所述阀座上设有安装孔,所述阀芯能够滑动地安装在所述安装孔内。
在上述任一技术方案中,优选地,所述阀芯的底部由所述安装孔的下端伸出,且所述阀芯的底部安装有密封垫,密封垫用于在所述阀芯被处于所述第二位置时将所述阀芯和所述安装孔间的间隙密封。
本发明第二方面实施例提供了一种锅盖组件,具有本发明第一方面任一实施例提供的浮子动作检测装置,因此该锅盖组件具有上述任一实施例提供的浮子动作检测装置的全部有益效果,
本发明第二个方面的实施例提供的锅盖组件,用于压力烹饪器具,包括:上盖,所述上盖上设有安装腔,所述安装腔的顶部设有通孔;如权利要求1至8中任一项所述的浮子阀动作检测装置,浮子阀动作检测装置包括:浮子阀、空心电感线圈和检测电路,所述空心电感线圈固定安装在所述安装腔内,所述浮子阀包括阀芯,所述阀芯能够活动地安装安装腔内,所述阀芯未被锅内压力顶起时,所述阀芯的第一段伸入所述空心电感线圈的中心,所述阀芯被锅内压力顶起时,所述阀芯的第二段伸入所述空心电感线圈的中心,且所述第一段和所述第二段的磁阻不等,所述检测电路与所述空心电感线圈电连接,用于检测所述空心电感线圈的电感量变化,并根据电感量变化判断所述阀芯的位置;其中,所述阀芯被锅内压力顶起时,所述阀芯的顶部穿过所述通孔伸出所述上盖外。
需要说明的是,阀芯的第一段和第二段可以是独立的,即阀芯被顶起后,原本位于空心电感线圈内的部分(即第一段)完全从线圈中脱出,阀芯的第二段进入线圈内;阀芯的第一段和第二段也可以有重合部分,即阀芯被顶起后,原本位于空心电感线圈内的第一段局部从线圈中脱出,第一段剩余部分仍处于线圈内,第一段剩余部分和阀芯新进入线圈的部分构成第二段。
本方案改变了阀芯和空心电感线圈在高度方向上的相对位置,阀芯未被锅内压力顶起时,阀芯至少一部分伸入空心电感线圈中心,这样设计减小了阀芯与空心电感线圈在高度方向所需的安装空间,从而可减小上盖的 厚度,提升产品的美观性,同时节省上盖生产材料的用量,以降低产品的生产成本。除此以外,本方案还在上盖安装腔的顶部设置了通孔,阀芯被锅内压力顶起时,阀芯顶部会穿过通孔伸到上盖外,用户可以直接看到阀芯,以使用户在产品的光电、声音等安全开盖提醒出现故障的情况下,也可轻松得知阀芯否处于被顶起状态,从而判断产品当前状态下开盖是否安全,这样设计可大幅提升产品的安全性。
其中,浮子阀动作检测装置的工作原理如下:浮子阀的阀芯未被锅内压力顶起时,阀芯的第一段伸入空心电感线圈的中心,阀芯被锅内压力顶起时,阀芯的第二段伸入空心电感线圈的中心,由于阀芯第一段与第二段的磁阻不等,使得空心电感线圈的电感量产生变化,检测电路通过检测空心电感线圈的电感量变化判断阀芯是否被顶起,从而判定此时开盖是否安全。
根据本发明的一个实施例,所述第一段与所述第二段的体积不等,且所述阀芯的生产材料的导磁率与空气的导磁率不等。
本方案中,阀芯由导磁率与空气导磁率不等的材料制造,在生产时整个阀芯一体成型,这样设计阀芯的生产工艺简单,可提升产品的生产效率,其中,阀芯第一段与第二段的体积不等,使得第一段和第二段的磁阻不等,以保证阀芯被顶起后,空心电感线圈的电感量会产生变化,以便检测电路通过空心电感线圈的电感量变化判断阀芯是否被顶起,从而判定此时开盖是否安全。
在上述技术方案中,可选地,所述第一段和所述第二段中的一个上设有向外凸出或向内凹陷的区别部,以使所述第一段和所述第二段体积不等。
本方案通过在阀芯第一段和第二段中的一个上设置凸起或凹槽,使第一段和第二段的体积不等,这样设计阀芯的生产加工难度低。
在上述技术方案中,可选地,所述第一段和所述第二段上分别设有向外凸出或向内凹陷的区别部,且所述第一段上的区别部的体积与所述第二段上的区别部的体积不等,以使所述第一段和所述第二段体积不等。
根据本发明的一个实施例,所述第一段或所述第二段上设有导磁材料体,且所述导磁材料体的导磁率与所述阀芯的生产材料的导磁率不等。
导磁材料体对空心电感线圈电感量的影响大,本方案在阀芯第一段或第二段上设置导磁材料体,这样在阀芯位置变化时,空心电感线圈电感量的变化大,使检测电路容易检测,从而提升浮子阀动作检测装置的可靠性。
根据本发明的一个实施例,所述第一段和所述第二段上分别设有导磁材料体,所述导磁材料体的导磁率与所述阀芯的生产材料的导磁率不等,且所述第一段上的导磁材料体的体积与所述第二段上的导磁材料体的体积不等。
本发明第三方面的实施例提供了一种压力烹饪器具,包括:锅体和本发明第二方面任一实施例提供的锅盖组件。其中,锅盖组件中的检测电路可以完全位于上盖上,也可以部分位于上盖上,其余部分位于锅体上。
本发明第三方面实施例提供的压力烹饪器具,具有本发明第二方面任一实施例提供的锅盖组件,因此该压力烹饪器具具有上述任一实施例提供的锅盖组件的全部有益效果,在此不再赘述。
具体地,压力烹饪器具包括:电压力锅、压力电饭煲等。
本发明的附加方面和优点将在下面的描述部分中变得明显,或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解,其中:
图1是本发明的一个实施例提供的浮子阀动作检测装置与上盖装配后的结构示意图;
图2是图1中所示浮子阀动作检测装置及上盖A-A向的剖视结构示意图;
图3是图2中B部的放大结构示意图;
图4是图2中所示浮子阀动作检测装置在阀芯处于顶起状态的结构示意图;
图5是图4中C部的放大结构示意图;
图6是本发明的一个实施例提供的锅盖组件的结构示意图;
图7是图6中所示锅盖组件D-D向的剖视结构示意图;
图8是图7中E部的放大结构示意图;
图9是图7中所示锅盖组件在阀芯处于顶起状态的结构示意图;
图10是图9中F部的放大结构示意图;
图11是图7中阀芯的结构示意图;
图12是本发明的另一个实施例提供的阀芯的结构示意图。
其中,图1至图12中的附图标记与部件名称之间的对应关系为:
1上盖,11通孔,2阀芯,21凹槽,3空心电感线圈,4阀座,5密封垫。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点,下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是,在不冲突的情况下,本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明,但是,本发明还可以采用其他不同于在此描述的方式来实施,因此,本发明的保护范围并不受下面公开的具体实施例的限制。
本发明第一个方面的实施例提供了一种用于压力烹饪器具的浮子阀动作检测装置,包括:浮子阀、空心电感线圈和检测电路。本方案中,浮子阀的阀芯由导磁率与空气不等的材料制成,阀芯能够活动地安装在压力烹饪器具的上盖上,压力烹饪器具的锅内压力超过安全范围时,阀芯在锅内压力推动下由第一位置运动至第二位置,阀芯位于空心电感线圈内的体积增大或减小,使空心电感线圈的电感量产生变化,检测电路通过检测空心电感线圈的电感量变化判断阀芯位置,从而判定此时开盖是否安全。本方案改变了浮子阀阀芯的结构,采用导磁率与空气不等的材料制造阀芯,去除了旧方案中阀芯上的导磁材料体,这样设计不但节省了生产材料,同时还省去了导磁材料体和阀芯上导磁材料安装部的加工工序,以及导磁材料体与阀芯的装配工序,从而可降低产品的生产成本、并提高产品的生产效率,进而使企业在行业竞争中取得优势。
实施例一:
如图1至图5所示,浮子阀动作检测装置包括:浮子阀、空心电感线 圈3和检测电路,浮子阀包括由导磁率小于空气的材料制成的阀芯2,阀芯2能够活动地安装在压力烹饪器具的上盖1上,阀芯2能够在所述压力烹饪器具的锅内压力推动下由第一位置运动至第二位置,空心电感线圈3固定安装在上盖1上,阀芯2处于第一位置时,空心电感线圈3至少局部位于阀芯2的上方,阀芯2被锅内压力推动至第二位置时,阀芯2位于空心电感线圈3内的体积增大,检测电路与空心电感线圈3电连接,用于检测空心电感线圈3的电感量变化,并根据电感量变化判断阀芯2的位置。
本方案中,阀芯2处于第一位置时,空心电感线圈3至少局部位于阀芯2上方,阀芯2被锅内压力推动至第二位置时,阀芯2位于空心电感线圈3内的体积增大,由于阀芯2材料的导磁率小于空气,使得空心电感线圈3的电感量减小,检测电路在检测到空心电感线圈3电感减小量达到预设值时,判定阀芯2被锅内压力推动至第二位置,从而判定锅内压力超过安全范围,此时开盖不安全;锅内压力降到安全范围内后,阀芯2自动回落至第一位置,阀芯2位于空心电感线圈3内的体积减小,使得空心电感线圈3的电感量增大,检测电路在检测到空心电感线圈3电感增大量达到预设值时,判定阀芯2已回落到第一位置,从而判定锅内压力降到了安全范围内,此时开盖安全。
实施例二:
浮子阀动作检测装置包括:浮子阀、空心电感线圈和检测电路,浮子阀包括由导磁率小于空气的材料制成的阀芯,阀芯能够活动地安装在压力烹饪器具的上盖上,阀芯能够在所述压力烹饪器具的锅内压力推动下由第一位置运动至第二位置,空心电感线圈固定安装在上盖上,阀芯处于第一位置时,阀芯至少局部位于空心电感线圈内,阀芯被锅内压力推动至第二位置时,阀芯位于空心电感线圈内的体积减小,检测电路与空心电感线圈电连接,用于检测空心电感线圈的电感量变化,并根据电感量变化判断阀芯的位置。
本方案中,阀芯处于所述第一位置时,阀芯至少局部位于空心电感线圈内,阀芯被锅内压力推动至第二位置时,阀芯位于空心电感线圈中心的部分完全或局部由空心电感线圈内脱出,使阀芯位于空心电感线圈内的体 积减小,由于阀芯材料的导磁率小于空气,使得空心电感线圈的电感量增大,检测电路在检测到空心电感线圈电感增大量达到预设值时,判定阀芯锅内压力推动至第二位置,从而判定锅内压力超过安全范围,此时开盖不安全;锅内压力降到安全范围内后,阀芯自动回落至第一位置,阀芯位于空心电感线圈内的体积增大,使得空心电感线圈的电感量减小,检测电路在检测到空心电感线圈电感减小量达到预设值时,判定阀芯已回落至第一位置,从而判定锅内压力降到了安全范围内,此时开盖安全。
在上述任一实施例中,优选地,阀芯2为铝制件。
铝的导磁率小于空气,且密度较小,阀芯2选用铝作为生产材料,可避免阀芯2重量过大,保证零件的重量满足设计要求,以防止出现锅内压力超限阀芯2仍无法被锅内压力推动至第二位置的问题。
在上述任一实施例中,优选地,检测电路包括控制器,检测电路将空心电感线圈3的电感量变化转换成电信号输入控制器,控制器用于对电信号进行检测,并根据检测结果输出控制信号。
本方案中,检测电路包括控制器,当阀芯2位置变化时,空心电感线圈3的电感量产生相应变化,检测电路将电感量的变化转换成电信号输入控制器进行检测分析,以判断阀芯2位置,在此基础上,优选地,控制器可根据对上述电信号的检测分析结果,即阀芯2位置的判断结果,向相连接的电器件发送控制信号,以控制这些电器件进行相应工作。
在上述任一实施例中,优选地,浮子阀动作检测装置还包括:提示装置,与控制器电连接,用于在控制器的控制下发出光电和/或声音提示。
本方案中,浮子阀动作检测装置还包括提示装置,阀芯2位置变化时,控制器向提示装置发送控制信号,使提示装置发出相应的光电和/或声音提示信号,引起用户的注意,告知用户此时开盖是否安全,避免用户在锅内压力超出安全范围时开盖,以提升产品的安全性。
可选地,提示装置包括:指示灯和/或蜂鸣器和/或显示屏。
如图2至图5所示,在上述任一实施例中,优选地,浮子阀还包括阀座4,阀座4固定安装在上盖1上,阀座4上设有安装孔,阀芯2能够滑动地安装在安装孔内。
如图2至图5所示,在上述任一实施例中,优选地,阀芯2的底部由安装孔的下端伸出,且阀芯2的底部安装有密封垫5,密封垫5用于在阀芯2处于所述第二位置时将阀芯2和安装孔间的间隙密封。
如图6至图10所示,本发明第二个方面的实施例提供了一种用于压力烹饪器具的锅盖组件,锅盖组件包括:上盖1和如本发明第一方面任一实施例提供的浮子动作检测装置,上盖1上设有安装腔,安装腔的顶部设有通孔11;浮子阀动作检测装置包括:浮子阀、空心电感线圈3和检测电路,空心电感线圈3固定安装在安装腔内,浮子阀包括阀芯2,阀芯2能够活动地安装安装腔内,阀芯2未被锅内压力顶起时,阀芯2的第一段伸入空心电感线圈3的中心,阀芯2被锅内压力顶起时,阀芯2的第二段伸入空心电感线圈3的中心,且第一段和第二段的磁阻不等,检测电路与空心电感线圈3电连接,用于检测空心电感线圈3的电感量变化,并根据电感量变化判断阀芯2的位置;其中,阀芯2被锅内压力顶起时,阀芯2的顶部穿过通孔11伸出上盖1外。
需要说明的是,阀芯2的第一段和第二段可以是独立的,即阀芯2被顶起后,原本位于空心电感线圈3内的部分(即第一段)完全从线圈中脱出,阀芯2的第二段进入线圈内;阀芯2的第一段和第二段也可以有重合部分,即阀芯2被顶起后,原本位于空心电感线圈3内的第一段局部从线圈中脱出,第一段剩余部分仍处于线圈内,第一段剩余部分和阀芯2新进入线圈的部分构成第二段。
本方案改变了阀芯2和空心电感线圈3在高度方向上的相对位置,阀芯2未被锅内压力顶起时,阀芯2至少一部分伸入空心电感线圈3中心,这样设计减小了阀芯2与空心电感线圈3在高度方向所需的安装空间,从而可减小上盖1的厚度,提升产品的美观性,同时节省上盖1生产材料的用量,以降低产品的生产成本。除此以外,本方案还在上盖1安装腔的顶部设置了通孔11,阀芯2被锅内压力顶起时,阀芯2顶部会穿过通孔11伸到上盖1外,用户可以直接看到阀芯2,以使用户在产品的光电、声音等安全开盖提醒出现故障的情况下,也可轻松得知阀芯2否处于被顶起状态,从而判断产品当前状态下开盖是否安全,这样设计可大幅提升产品的 安全性。
浮子阀动作检测装置的工作原理如下:浮子阀的阀芯2未被锅内压力顶起时,阀芯2的第一段伸入空心电感线圈3的中心,阀芯2被锅内压力顶起时,阀芯2的第二段伸入空心电感线圈3的中心,由于阀芯2第一段与第二段的磁阻不等,使得空心电感线圈3的电感量产生变化,检测电路通过检测空心电感线圈3的电感量变化判断阀芯2是否被顶起,从而判定此时开盖是否安全。
其中,阀芯2的具体结构包括多种实施方式:
实施例一:
如图6至图12所示,阀芯2由导磁率与空气导磁率不等的材料制造,且阀芯2第一段与第二段的体积不等。
本方案中,阀芯2由导磁率与空气导磁率不等的材料制造,在生产时整个阀芯2一体成型,这样设计阀芯2的生产工艺简单,可提升产品的生产效率。其中,阀芯2第一段与第二段的体积不等,使得第一段和第二段的磁阻不等,以保证阀芯2被顶起后,空心电感线圈3的电感量会产生变化,以便检测电路通过空心电感线圈3的电感量变化判断阀芯2是否被顶起,从而判定此时开盖是否安全。
可选地,如图6至图11所示,阀芯2的第二段上设有凹槽21,以使第一段和第二段体积不等,阀芯2未被锅内压力顶起时,该凹槽21位于空心电感线圈3下方,阀芯2被锅内压力顶起时,阀芯2位置升高,该凹槽21进入空心电感线圈3内,使阀芯2位于空心电感线圈3内的体积减小,以使空心电感线圈3的电感量产生变化,检测电路通过检测空心电感线圈3的电感量变化判断阀芯2是否被顶起,从而判定此时开盖是否安全。
可选地,如图12所示,阀芯2的第一段上设有凹槽21,以使第一段和第二段体积不等,阀芯2未被锅内压力顶起时,该凹槽21位于空心电感线圈3内,阀芯2被锅内压力顶起时,阀芯2位置升高,该凹槽21从空心电感线圈3内脱出,使阀芯2位于空心电感线圈3内的体积增大,以使空心电感线圈3的电感量产生变化,检测电路通过检测空心电感线圈3的电感量变化判断阀芯2是否被顶起,从而判定此时开盖是否安全。
当然,也可在阀芯2第一段和第二段上分别设有向外凸出或向内凹陷的区别部,且第一段上的区别部的体积与第二段上的区别部的体积不等,以使第一段和第二段体积不等。
实施例二:
阀芯的第一段或第二段上设有导磁材料体,且阀芯的生产材料的导磁率与导磁材料体的导磁率不等。
导磁材料体对空心电感线圈电感量的影响大,本方案在阀芯第一段或第二段上设置导磁材料体,这样在阀芯位置变化时,空心电感线圈电感量的变化大,使检测电路容易检测,从而提升浮子阀动作检测装置的可靠性。
当然,也可在阀芯第一段和第二段上分别设有导磁材料体,导磁材料体的导磁率与阀芯的生产材料的导磁率不等,且第一段上的导磁材料体的体积与第二段上的导磁材料体的体积不等。
在上述任一技术方案中,优选地,阀芯为铝制件。
铝的导磁率小于空气,铝制阀芯插入空心电感线圈内后,可使空心电感线圈的电感量产生变化,且铝的密度较小,阀芯选用铝作为生产材料,可避免阀芯重量过大,保证零件的重量满足设计要求,以防止出现锅内压力超限阀芯仍无法被顶起的问题。
在上述任一技术方案中,优选地,检测电路包括控制器,检测电路将空心电感线圈的电感量变化转换成电信号输入控制器,控制器用于对电信号进行检测,并根据检测结果输出控制信号。
本方案中,检测电路包括控制器,当阀芯位置变化时,空心电感线圈的电感量产生相应变化,检测电路将电感量的变化转换成电信号输入控制器进行检测分析,以判断阀芯是否顶起,在此基础上,优选地,控制器可根据对上述电信号的检测分析结果,即阀芯是否顶起的判断结果,向相连接的电器件发送控制信号,以控制这些电器件进行相应工作。
在上述任一技术方案中,优选地,锅盖组件还包括:提示装置,与控制器电连接,用于在控制器的控制下发出光电和/或声音提示。
本方案中,锅盖组件还包括提示装置,阀芯位置变化时,控制器向提示装置发送控制信号,使提示装置发出相应的光电和/或声音提示信号,引 起用户的注意,告知用户此时开盖是否安全,避免用户在锅内压力超出安全范围时开盖,以提升产品的安全性。
可选地,提示装置包括:指示灯和/或蜂鸣器和/或显示屏。
如图7至图10所示,在上述任一技术方案中,优选地,浮子阀还包括阀座4,阀座4固定安装在上盖1上,阀座4上设有安装孔,阀芯2能够滑动地安装在安装孔内。
在上述任一技术方案中,优选地,阀芯2的底部由安装孔的下端伸出,且阀芯2的底部安装有密封垫5,密封垫5用于在阀芯2被顶起时将阀芯2和安装孔间的间隙密封。
本发明第三方面的实施例提供了一种压力烹饪器具,包括:锅体和本发明第二方面任一实施例提供的锅盖组件。其中,锅盖组件中的检测电路可以完全位于上盖上,也可以部分位于上盖上,其余部分位于锅体上。
本发明第三方面实施例提供的压力烹饪器具,具有本发明第二方面任一实施例提供的锅盖组件,因此该压力烹饪器具具有上述任一实施例提供的锅盖组件的全部有益效果,在此不再赘述。
具体地,压力烹饪器具包括:电压力锅、压力电饭煲等。
尽管具有随附权利要求,但本发明也由以下条款限定:
1.一种浮子阀动作检测装置,用于压力烹饪器具,包括:浮子阀、空心电感线圈和检测电路,所述浮子阀包括由导磁率与空气不等的材料制成的阀芯,所述阀芯能够活动地安装在所述压力烹饪器具的上盖上,所述阀芯能够在所述压力烹饪器具的锅内压力推动下由第一位置运动至第二位置;所述检测电路与所述空心电感线圈电连接,用于检测所述空心电感线圈的电感量变化,并根据电感量变化判断所述阀芯的位置;
其中,所述阀芯在所述第一位置时位于空心电感线圈内的体积小于或大于在所述第二位置时位于所述空心电感线圈内的体积。
2.根据条例1所述的浮子阀动作检测装置,
所述空心电感线圈固定安装在所述上盖上,所述阀芯处于所述第一位置时,所述空心电感线圈至少局部位于所述阀芯的上方,所述阀芯在锅内压力推动下运动至所述第二位置时,所述阀芯位于所述空心电感线圈内的 体积增大。
3.根据条例1所述的浮子阀动作检测装置,
所述空心电感线圈固定安装在所述上盖上,所述阀芯处于所述第一位置时,所述阀芯至少局部位于空心电感线圈内,所述阀芯在锅内压力推动下运动至所述第二位置时,所述阀芯位于所述空心电感线圈内的体积减小。
4.根据条例1至3中任一项所述的浮子阀动作检测装置,
所述阀芯为铝制件。
5.根据条例1至3中任一项所述的浮子阀动作检测装置,
所述检测电路包括控制器,所述检测电路将所述空心电感线圈的电感量变化转换成电信号输入所述控制器,所述控制器用于对所述电信号进行检测,并根据检测结果输出控制信号。
6.根据条例5所述的浮子阀动作检测装置,还包括:
提示装置,与所述控制器电连接,用于在所述控制器的控制下发出光电和/或声音提示。
7.根据条例1至3中任一项所述的浮子阀动作检测装置,
所述浮子阀还包括阀座,所述阀座固定安装在所述上盖上,所述阀座上设有安装孔,所述阀芯能够滑动地安装在所述安装孔内。
8.根据条例7所述的浮子阀动作检测装置,
所述阀芯的底部由所述安装孔的下端伸出,且所述阀芯的底部安装有密封垫,密封垫用于在所述阀芯处于所述第二位置时将所述阀芯和所述安装孔间的间隙密封。
9.一种压力烹饪器具,包括:上盖、锅体和如条例1至8中任一项所述的浮子阀动作检测装置。
10.根据条例9所述的压力烹饪器具,
压力烹饪器具为电压力锅或压力电饭煲。
11.一种锅盖组件,用于压力烹饪器具,包括:
上盖,所述上盖上设有安装腔,所述安装腔的顶部设有通孔;
浮子阀动作检测装置,包括:浮子阀、空心电感线圈和检测电路,所述空心电感线圈固定安装在所述安装腔内,所述浮子阀包括阀芯,所述阀 芯能够活动地安装安装腔内,所述阀芯未被锅内压力顶起时,所述阀芯的第一段伸入所述空心电感线圈的中心,所述阀芯被锅内压力顶起时,所述阀芯的第二段伸入所述空心电感线圈的中心,且所述第一段和所述第二段的磁阻不等,所述检测电路与所述空心电感线圈电连接,用于检测所述空心电感线圈的电感量变化,并根据电感量变化判断所述阀芯的位置;
其中,所述阀芯被锅内压力顶起时,所述阀芯的顶部穿过所述通孔伸出所述上盖外。
12.根据条例11所述的锅盖组件,
所述第一段与所述第二段的体积不等,且所述阀芯的生产材料的导磁率与空气的导磁率不等。
13.根据条例12所述的锅盖组件,
所述第一段和所述第二段中的一个上设有向外凸出或向内凹陷的区别部,以使所述第一段和所述第二段体积不等。
14.根据条例12所述的锅盖组件,
所述第一段和所述第二段上分别设有向外凸出或向内凹陷的区别部,且所述第一段上的区别部的体积与所述第二段上的区别部的体积不等,以使所述第一段和所述第二段体积不等。
15.根据条例11所述的锅盖组件,
所述第一段或所述第二段上设有导磁材料体,且所述导磁材料体的导磁率与所述阀芯的生产材料的导磁率不等。
16.根据条例11所述的锅盖组件,
所述第一段和所述第二段上分别设有导磁材料体,所述导磁材料体的导磁率与所述阀芯的生产材料的导磁率不等,且所述第一段上的导磁材料体的体积与所述第二段上的导磁材料体的体积不等。
17.根据条例11至16中任一项所述的锅盖组件,
所述阀芯为铝制件。
18.根据条例11至16中任一项所述的锅盖组件,
所述检测电路包括控制器,所述检测电路将所述空心电感线圈的电感量变化转换成电信号输入所述控制器,所述控制器用于对所述电信号进行 检测,并根据检测结果输出控制信号。
19.根据条例18所述的锅盖组件,还包括:
提示装置,与所述控制器电连接,用于在所述控制器的控制下发出光电和/或声音提示。
20.一种压力烹饪器具,包括:锅体和如条例11至19中任一项所述的锅盖组件。
在本发明的描述中,术语“上”、“下”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
在本说明书的描述中,术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或实例。而且,描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。术语“连接”、“安装”、“固定”等均应做广义理解,例如,“连接”可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (15)

  1. 一种浮子阀动作检测装置,用于压力烹饪器具,其特征在于,包括:浮子阀、空心电感线圈和检测电路,所述浮子阀包括由导磁率与空气不等的材料制成的阀芯,所述阀芯能够活动地安装在所述压力烹饪器具的上盖上,所述阀芯能够在所述压力烹饪器具的锅内压力推动下由第一位置运动至第二位置;所述检测电路与所述空心电感线圈电连接,用于检测所述空心电感线圈的电感量变化,并根据电感量变化判断所述阀芯的位置;
    其中,所述阀芯在所述第一位置时位于空心电感线圈内的体积小于或大于在所述第二位置时位于所述空心电感线圈内的体积。
  2. 根据权利要求1所述的浮子阀动作检测装置,其特征在于,
    所述空心电感线圈固定安装在所述上盖上,所述阀芯处于所述第一位置时,所述空心电感线圈至少局部位于所述阀芯的上方,所述阀芯在锅内压力推动下运动至所述第二位置时,所述阀芯位于所述空心电感线圈内的体积增大。
  3. 根据权利要求1所述的浮子阀动作检测装置,其特征在于,
    所述空心电感线圈固定安装在所述上盖上,所述阀芯处于所述第一位置时,所述阀芯至少局部位于空心电感线圈内,所述阀芯在锅内压力推动下运动至所述第二位置时,所述阀芯位于所述空心电感线圈内的体积减小。
  4. 根据权利要求1至3中任一项所述的浮子阀动作检测装置,其特征在于,
    所述阀芯为铝制件。
  5. 根据权利要求1至3中任一项所述的浮子阀动作检测装置,其特征在于,
    所述检测电路包括控制器,所述检测电路将所述空心电感线圈的电感量变化转换成电信号输入所述控制器,所述控制器用于对所述电信号进行检测,并根据检测结果输出控制信号。
  6. 根据权利要求5所述的浮子阀动作检测装置,其特征在于,还包括:
    提示装置,与所述控制器电连接,用于在所述控制器的控制下发出光 电和/或声音提示。
  7. 根据权利要求1至3中任一项所述的浮子阀动作检测装置,其特征在于,
    所述浮子阀还包括阀座,所述阀座固定安装在所述上盖上,所述阀座上设有安装孔,所述阀芯能够滑动地安装在所述安装孔内。
  8. 根据权利要求7所述的浮子阀动作检测装置,其特征在于,
    所述阀芯的底部由所述安装孔的下端伸出,且所述阀芯的底部安装有密封垫,密封垫用于在所述阀芯处于所述第二位置时将所述阀芯和所述安装孔间的间隙密封。
  9. 一种锅盖组件,用于压力烹饪器具,其特征在于,包括:
    上盖,所述上盖上设有安装腔,所述安装腔的顶部设有通孔;
    如权利要求1至8中任一项所述的浮子阀动作检测装置,浮子阀动作检测装置包括:浮子阀、空心电感线圈和检测电路,所述空心电感线圈固定安装在所述安装腔内,所述浮子阀包括阀芯,所述阀芯能够活动地安装安装腔内,所述阀芯未被锅内压力顶起时,所述阀芯的第一段伸入所述空心电感线圈的中心,所述阀芯被锅内压力顶起时,所述阀芯的第二段伸入所述空心电感线圈的中心,且所述第一段和所述第二段的磁阻不等,所述检测电路与所述空心电感线圈电连接,用于检测所述空心电感线圈的电感量变化,并根据电感量变化判断所述阀芯的位置;
    其中,所述阀芯被锅内压力顶起时,所述阀芯的顶部穿过所述通孔伸出所述上盖外。
  10. 根据权利要求9所述的锅盖组件,其特征在于,
    所述第一段与所述第二段的体积不等,且所述阀芯的生产材料的导磁率与空气的导磁率不等。
  11. 根据权利要求10所述的锅盖组件,其特征在于,
    所述第一段和所述第二段中的一个上设有向外凸出或向内凹陷的区别部,以使所述第一段和所述第二段体积不等。
  12. 根据权利要求10所述的锅盖组件,其特征在于,
    所述第一段和所述第二段上分别设有向外凸出或向内凹陷的区别部, 且所述第一段上的区别部的体积与所述第二段上的区别部的体积不等,以使所述第一段和所述第二段体积不等。
  13. 根据权利要求9所述的锅盖组件,其特征在于,
    所述第一段或所述第二段上设有导磁材料体,且所述导磁材料体的导磁率与所述阀芯的生产材料的导磁率不等。
  14. 根据权利要求9所述的锅盖组件,其特征在于,
    所述第一段和所述第二段上分别设有导磁材料体,所述导磁材料体的导磁率与所述阀芯的生产材料的导磁率不等,且所述第一段上的导磁材料体的体积与所述第二段上的导磁材料体的体积不等。
  15. 一种压力烹饪器具,其特征在于,包括:锅体和如权利要求9至14中任一项所述的锅盖组件。
PCT/CN2017/108986 2017-02-10 2017-11-01 浮子阀动作检测装置、锅盖组件及压力烹饪器具 WO2018145491A1 (zh)

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