CN209846907U - A anti-overflow device and cooking utensil for cooking utensil - Google Patents
A anti-overflow device and cooking utensil for cooking utensil Download PDFInfo
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- CN209846907U CN209846907U CN201822006111.XU CN201822006111U CN209846907U CN 209846907 U CN209846907 U CN 209846907U CN 201822006111 U CN201822006111 U CN 201822006111U CN 209846907 U CN209846907 U CN 209846907U
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- conductive probe
- prevention device
- overfill prevention
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Abstract
The utility model discloses an anti-overflow device and cooking utensil for cooking utensil, anti-overflow device includes: the conductive probe comprises a detection end and a connecting end; the insulating component comprises a detection part, the detection part covers the outer surface of the detection end, the outer surface of the detection part forms a detection surface, and the capacitance value of the conductive probe changes along with the approach or contact of the detection surface to the medium in the cooking utensil; and the control module is electrically connected with the conductive probe through the connecting end and judges whether the anti-overflow operation is performed or not according to the change of the capacitance value of the conductive probe, wherein the outer surface of the detection end is a spherical surface. According to the utility model discloses an anti-overflow device sensitivity is higher, the erroneous judgement probability is lower to security when can effectively guaranteeing to use.
Description
Technical Field
The utility model relates to an anti-overflow device and cooking utensil for cooking utensil.
Background
Many cooking appliances such as electric cookers or electric pressure cookers currently on the market are usually provided with an anti-overflow detection device, so as to realize an anti-overflow function. However, the conventional anti-overflow detection device usually adopts two metal electrodes which are respectively connected with the control panel interface through leads, and this way has higher cost and higher misjudgment probability.
Accordingly, there is a need to provide an overflow prevention device for a cooking appliance and a cooking appliance to at least partially solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
In order to solve the above problems, an aspect of the present invention is to disclose a spill prevention device for a cooking appliance, the spill prevention device comprising:
the conductive probe comprises a detection end and a connecting end;
the insulating component comprises a detection part, the detection part covers the outer surface of the detection end, the outer surface of the detection part forms a detection surface, and the capacitance value of the conductive probe changes along with the approach or contact of the detection surface to the medium in the cooking utensil; and
the control module is electrically connected with the conductive probe through the connecting end and judges whether the anti-overflow operation is performed or not according to the change of the capacitance value of the conductive probe,
wherein, the outer surface of the detection end is a spherical surface.
Preferably, the outer surface of the detection end of the conductive probe is a whole spherical surface, a semi-spherical surface or an ellipsoidal surface, and the detection part and the detection end are wrapped on the outer surface of the detection end in a matching manner.
Preferably, there is no gap between the detection part and the outer surface of the detection end.
Preferably, the conductive probe and the insulating member are a unitary piece formed by an in-mold injection molding process.
Preferably, the anti-overflow device further comprises a detection circuit, the detection circuit is respectively electrically connected with the connection end and the control module, the detection circuit generates a detection signal by detecting a change in a capacitance value of the conductive probe, and the control module determines whether to perform the anti-overflow operation based on the detection signal.
Preferably, the wall thickness W of the detection portion satisfies: w is more than or equal to 2mm and less than or equal to 4 mm.
Preferably, the insulating member further includes a connection part connected to the detection part, the connection part being used to connect the insulating member and the conductive probe in the cooking appliance, the connection part being in the shape of a hollow cylinder having one end provided with a flange extending radially outward.
Preferably, the anti-overflow device still includes electric connecting part, electric connecting part include the inserted sheet and with the connecting wire that has the plug that the inserted sheet is connected, the inserted sheet with electrically conductive probe electricity is connected, the connecting wire with detection circuitry electricity is connected.
The utility model discloses still disclose a cooking utensil, cooking utensil includes:
a pot body; and
the cover body is arranged on the cooker body in an openable and closable manner and comprises a lining and an inner cover connected with the lining; and
the anti-overflow device is arranged on the cover body.
Preferably, a height H of the detection portion of the insulating member protruding from the inner lid satisfies: h is more than or equal to 7.5mm and less than or equal to 15 mm.
Preferably, an area S of the detection portion protruding from the outer surface of the inner lid satisfies: 350mm2≤S≤1413mm2。
Preferably, the conductive probe is mounted on the cover via the insulating member.
According to the utility model discloses an anti-overflow device and cooking utensil are through judging whether carry out the anti-overflow operation according to the capacitance value change of conductive probe, can improve sensitivity, can reduce cost simultaneously. In addition, the outer surface of the detection end of the conductive probe is set to be a spherical surface, so that the misjudgment probability can be reduced, and the manufacture is more convenient. The insulating component is arranged on the outer surface of the conductive probe, so that the safety of the anti-overflow device in use can be ensured.
Drawings
The following figures of the embodiments of the present invention are used as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a schematic cross-sectional view of a portion of a cooking appliance according to a preferred embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a flowchart of an anti-overflow control performed by the anti-overflow device according to a preferred embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a portion of a cooking appliance according to another preferred embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the invention are possible in addition to these detailed descriptions.
Fig. 1 is a schematic cross-sectional view of a cooking appliance provided with an overflow prevention device according to a preferred embodiment of the present invention. It can be understood, according to the utility model discloses a cooking utensil can be for electric rice cooker, electric pressure cooker, soybean milk machine or other cooking utensil, and according to the utility model discloses a cooking utensil except having the function of cooking rice, can also have various functions such as cooking congee, a kind of deep pot hot water, boiling soybean milk. The following describes in detail the cooking utensil and the overflow preventing device according to the present invention, taking an electric rice cooker as an example.
As shown in fig. 1, the cooking appliance 200 includes a pot body 210 and a lid 220. The pot body 210 has a cavity of a cylindrical shape for receiving the inner pot 212, and the inner pot 212 can be freely put into or taken out of the cavity to facilitate cleaning of the inner pot 212. The upper surface of the inner pot 212 has a circular opening for containing a material to be heated, such as rice, soup, etc., into the inner pot 212. The cover body 220 includes an inner liner 221 and an inner cover 222 detachably coupled to the inner liner 221. The pot body 210 generally has therein a heating means for heating the inner pot 212.
As shown in fig. 1 and 2, the cooking appliance 200 further includes a spill prevention device 100, and the spill prevention device 100 is provided in the cover 220. The detection principle of the anti-overflow device 100 according to the present invention is a capacitance sensing principle, that is, when the medium (such as foam) in the inner pan 212 of the cooking utensil 200 approaches or contacts the detection component (such as the conductive probe 110 in the present application, which will be described in detail below) of the anti-overflow device, a capacitance value change thereof is caused, and such a change is converted into a detectable digital signal, so as to determine whether to perform the anti-overflow operation.
Specifically, as shown in fig. 1 and 2, the overfill prevention device 100 includes a conductive probe 110, a detection circuit electrically connected to the conductive probe 110, and a control module electrically connected to the detection circuit. The conductive probe 110 has a sensing end 111 and a connection end 112. The sensing end 111 of the conductive probe 110 is the portion that extends into the inner pot 212 through the inner lid 222, and the connection end 112 is connected to the sensing circuitry.
The overfill prevention device 100 further comprises an insulating member 120 that covers the outside of the conductive probe 110. The insulating member 120 is preferably made of an insulating material such as plastic. Specifically, the insulating member 120 includes a detection portion 121 and a connection portion 122. The sensing part 121 is a part which extends into the inner pot 212 through the inner cover 222 and can be contacted with the medium in the inner pot 212, and the sensing part 121 covers the outer surface of the sensing end 111, so that the user can not directly contact the conductive probe 110. Preferably, the wall thickness W of the detection portion 121 satisfies: 2mm W4 mm, for example, in a preferred embodiment, the thickness W of the detecting part 121 may be 3mm or 4 mm.
The outer surface of the detecting portion 121 constitutes a detecting surface, wherein the capacitance of the conductive probe 110 can be changed as the detecting surface approaches or contacts the medium in the cooking utensil 200, thereby forming a capacitive detecting device. When the medium inside the cooking appliance 200 approaches or contacts the sensing surface, the capacitance value of the conductive probe 110 changes. The detection circuit is electrically connected to the conductive probe 110, and the detection circuit generates a detection signal by detecting a change in capacitance value of the conductive probe 110. The control module communicates with the detection circuit to receive the detection signal and determines whether an overflow phenomenon occurs in the inner pan 212 of the cooking appliance 200 according to the detection signal, thereby performing an overflow prevention operation.
In one embodiment, as shown in fig. 3, the detection circuit can detect the capacitance value of the conductive probe 110 in real time and convert the capacitance value into a corresponding digital semaphore. The control module acquires the digital semaphore of the detection circuit in real time, and stores and compares the digital semaphore acquired this time with the difference S between the digital semaphore acquired before and the digital semaphore acquired before. When the control module determines that the difference S is greater than a set threshold, the spill-proof control may be performed. The embodiment can reduce the misjudgment probability.
Referring back to fig. 1 and 2, in the present embodiment, the outer surface of the sensing end 111 of the conductive probe 110 is substantially a full sphere, and accordingly, the shape of the conductive probe 110 is substantially a sphere. Preferably, the conductive probe 110 is a solid or hollow member made of a conductive metal material. The detecting part 121 and the detecting end 111 of the conductive probe 110 are matched to cover the outer surface of the detecting end 111, so that the detecting part 121 and the outer surface of the detecting end 111 are in close contact without any gap, in this way, the outer surface of the detecting part 121 is also approximately a full spherical surface, and the detecting part 121 is approximately shaped as a hollow sphere. Through setting up detection portion 121 to the sphere that matches with conductive probe 110, can be so that it has slick and sly surface, when the foam is left over on detection portion 121 like this, these foams can be along spherical surface landing to reduce the foam adhesion, avoid leading and remain the foam on detection portion 121 and lead to the misjudgement, and then reduced the misjudgement probability that the anti-overflow detected by a wide margin. Further, by making the gap between the detecting part 121 and the detecting end 111 small, the detection delay can be reduced and the sensitivity can be improved. Therefore, the overflow preventing device 100 for the cooking utensil 200 according to the embodiment of the present invention has the advantages of low probability of misjudgment, high sensitivity, etc. In a preferred embodiment, the conductive probe 110 and the insulating member 120 are integrally formed by an in-mold injection molding process, which is easy and inexpensive to manufacture.
As shown in fig. 2, in a preferred embodiment, a height H of the detection portion 121 of the insulating member 120 protruding from the inner lid 222 satisfies: h is 7.5mm ≦ H ≦ 15mm, and illustratively, the height H of the detection portion 121 of the insulating member 120 protruding from the inner lid 222 may be set to 9mm, 10mm, 12mm, 14mm, or the like. Further preferably, the area S of the outer surface of the detection portion 121 protruding out of the inner lid 222 satisfies: 350mm2≤S≤1413mm2. For example, in a preferred embodiment, the area S of the outer surface of the sensing part 121 protruding the inner lid 222 may be set to 400mm2、450mm2、500mm2、550mm2、600mm2、650mm2、900mm2、1200mm2And the like, and the skilled person can set the range according to actual needs.
The connection part 122 is preferably formed integrally with the sensing part 121 and serves to mount the insulating member 120 and the conductive probe 110 in the cooking appliance. The connecting portion 122 is substantially hollow cylindrical in shape, and is provided at one end with a flange 123 extending radially outward, the flange 123 being connected to the inner liner 221.
As shown in fig. 2, the overfill prevention device 100 further includes an electrical connection component 130 that connects the conductive probe 110 and the detection circuit. The electrical connection part 130 includes a blade 131 and a connection line 133 with a plug 132 connected to the blade 131. Preferably, the insert 131 is a metal piece made of an electrically conductive material. The blade 131 can be connected to the conductive probe 110 by a process such as soldering, the plug 132 is inserted into the blade 131, and the connecting wire 133 is electrically connected to the detection circuit.
In another embodiment, as shown in fig. 4, the outer surface of the detecting end 111 of the conductive probe 110 is substantially hemispherical, and correspondingly, the outer surface of the detecting part 121 is also substantially hemispherical matching with the outer surface of the detecting end 111. The preferred embodiment can also reduce foam adhesion, avoid misjudgment caused by residual foam on the detection part 121, and further greatly reduce the misjudgment probability of the anti-overflow detection.
It is understood that in other embodiments not shown, the outer surface of the detecting end 111 may be an ellipsoid or a spherical surface with other shapes, which can be set by those skilled in the art according to actual needs.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.
Claims (12)
1. A spill guard for a cooking appliance, the spill guard (100) comprising:
a conductive probe (110), the conductive probe (110) comprising a detection end (111) and a connection end (112);
the insulating component (120), the said insulating component (120) includes the detection part (121), the said detection part (121) coats the external surface of the said detection end (111), the external surface of the said detection part (121) forms the detection surface, wherein the capacitance value of the said conductive probe (110) produces the change as the said detection surface approaches or contacts the medium in the said cooking utensil; and
the control module is electrically connected with the conductive probe (110) through the connecting end (112) and judges whether the anti-overflow operation is performed or not according to the change of the capacitance value of the conductive probe (110),
wherein, the outer surface of the detection end is a spherical surface.
2. The overfill prevention device of claim 1, wherein the outer surface of the sensing end of said conductive probe (110) is a full sphere, a hemisphere, or an ellipsoid, and said sensing portion (121) and said sensing end (111) matingly cover the outer surface of said sensing end (111).
3. The overfill prevention device of claim 1, wherein there is no gap between said detection portion (121) and an outer surface of said detection end (111).
4. The overfill prevention device of claim 3, wherein said conductive probe (110) and said insulating member (120) are a unitary piece formed by an in-mold injection process.
5. The overfill prevention device of claim 1, wherein said overfill prevention device (100) further comprises a detection circuit, said detection circuit being electrically connected to said connection end (112) and said control module, respectively, said detection circuit generating a detection signal by detecting a change in capacitance of said conductive probe (110), said control module determining whether to perform said overfill prevention operation based on said detection signal.
6. The overfill prevention device of any of claims 1-4, wherein the wall thickness W of the detection portion (121) satisfies: w is more than or equal to 2mm and less than or equal to 4 mm.
7. The overfill prevention device of claim 5, wherein said insulating member (120) further comprises a connecting portion (122) connected to said detection portion (121), said connecting portion (122) for connecting said insulating member (120) and said conductive probe (110) in said cooking appliance, said connecting portion (122) being in the shape of a hollow cylinder provided with a radially outwardly extending flange (123) at one end.
8. The overfill prevention device of claim 7, wherein said overfill prevention device (100) further comprises an electrical connection component (130), said electrical connection component (130) comprising a blade (131) and a connection line (133) with a plug (132) connected to said blade (131), said blade (131) being electrically connected to said conductive probe (110), said connection line (133) being electrically connected to said detection circuit.
9. A cooking appliance, characterized in that the cooking appliance (200) comprises:
a pot body (210); and
a cover body (220), wherein the cover body (220) is arranged on the cooker body (210) in an openable and closable manner and comprises a lining (221) and an inner cover (222) connected with the lining (221); and
the overfill prevention device (100) of any of claims 1-8, said overfill prevention device (100) being disposed on said cover (220).
10. The cooking appliance according to claim 9, wherein a height H by which the detection portion (121) of the insulating member (120) protrudes from the inner lid (222) satisfies: h is more than or equal to 7.5mm and less than or equal to 15 mm.
11. The cooking appliance according to claim 10, wherein an area S of the detection portion (121) protruding from the outer surface of the inner lid (222) satisfies: 350mm2≤S≤1413mm2。
12. The cooking appliance according to claim 9, wherein the conductive probe (110) is mounted on the cover (220) via the insulating member (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822006111.XU CN209846907U (en) | 2018-11-30 | 2018-11-30 | A anti-overflow device and cooking utensil for cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822006111.XU CN209846907U (en) | 2018-11-30 | 2018-11-30 | A anti-overflow device and cooking utensil for cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209846907U true CN209846907U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822006111.XU Active CN209846907U (en) | 2018-11-30 | 2018-11-30 | A anti-overflow device and cooking utensil for cooking utensil |
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| Country | Link |
|---|---|
| CN (1) | CN209846907U (en) |
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