WO2018058733A1

WO2018058733A1 - Anti-overflow detection device for cooking utensil and cooking utensil having same

Info

Publication number: WO2018058733A1
Application number: PCT/CN2016/104289
Authority: WO
Inventors: 雷俊; 刘文华; 王云峰; 黄庶锋; 江德勇; 张帆
Original assignee: 佛山市顺德区美的电热电器制造有限公司
Priority date: 2016-09-30
Filing date: 2016-11-02
Publication date: 2018-04-05

Abstract

Disclosed are an anti-overflow detection device (10) for a cooking utensil (1) and a cooking utensil (1) having same. The anti-overflow detection device (10) comprises: an anti-overflow detection board (100), the anti-overflow detection board (100) being provided with a bubble through hole (110), the anti-overflow detection board (100) being a conductive material component, and a lower surface thereof forming a first detection plane; an anti-overflow detection probe (200), with a gap suitable for bubble filling being provided between the anti-overflow detection probe (200) and the anti-overflow detection board (100), a lower surface and/or side surface of the anti-overflow detection probe (200) forming a second detection plane, and a detection value of the anti-overflow detection probe (200) being changed as a function of a contact medium of the first detection plane and the second detection plane; and a detection chip, the detection chip being connected to the anti-overflow detection probe (200), and the detection chip detecting an amount of change of the detection value of the anti-overflow detection probe (200) so as to generate a detection signal.

Description

Anti-overflow detecting device for cooking appliance and cooking appliance therewith

Technical field

The present invention relates to the field of electrical appliance manufacturing technology, and in particular to an anti-overflow detecting device for a cooking appliance and a cooking appliance having the anti-overflow detecting device for the cooking appliance.

Background technique

The cooking appliance of the related art is provided with a detecting device to prevent foaming and liquid overflow in the pan. When the food in the cooking appliance is small, more foam is required to be in contact with the detecting probe for detecting the overflow prevention, and the detecting sensor generates the sensing. A small value can easily cause the probe to fail to detect that the foam has overflowed. For this reason, some cooking appliances increase the area of the detecting probe, and although the sensitivity of the detecting can be improved, the sensing value of the detecting probe is susceptible to changes in the environment to the erroneous detection of the signal.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the prior art to some extent. To this end, the present invention provides an anti-overflow detecting device for a cooking appliance, which has the advantages of timely detection, high sensitivity, good accuracy, and the like.

The invention also proposes a cooking appliance having the anti-overflow detection device for a cooking appliance.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides an anti-overflow detecting device for a cooking appliance, the anti-overflow detecting device for a cooking appliance comprising: an overflow prevention detecting plate, the overflow prevention a bubble through hole is disposed on the detecting plate, the overflow detecting plate is a conductive material member and the lower surface constitutes a first detecting surface; an overflow detecting probe, and the overflow detecting detecting probe and the overflow preventing detecting plate are suitable The lower surface and/or the side surface of the anti-overflow detecting probe constitute a second detecting surface, and the detection value of the anti-overflow detecting probe is in contact with the first detecting surface and the second detecting surface The detection chip is connected to the anti-overflow detection probe, and the detection chip generates a detection signal by detecting a change amount of the detection value of the anti-overflow detection probe.

The anti-overflow detecting device for a cooking appliance according to an embodiment of the present invention has the advantages of timely detection, high sensitivity, good accuracy, and the like.

In addition, the overflow prevention detecting apparatus for a cooking appliance according to the above embodiment of the present invention may further have the following additional Technical characteristics:

According to an embodiment of the present invention, the overflow prevention detecting probe is opposed to the bubble through hole in an up and down direction, and a lower surface of the overflow prevention detecting probe is spaced apart from an upper surface of the overflow prevention detecting plate to constitute a Said gap.

According to an embodiment of the present invention, a diameter of a circle having the same area as a lower surface of the overflow prevention detecting probe is larger than a distance between a lower surface of the overflow prevention detecting probe and an upper surface of the overflow prevention detecting plate one third.

According to an embodiment of the present invention, a radius of the overflow prevention detecting probe is smaller than a radius of the bubble through hole, and a minimum distance between an outer surface of the overflow prevention detecting probe and an upper surface of the overflow prevention detecting plate is not More than 5 mm.

According to an embodiment of the present invention, the radius of the overflow prevention detecting probe is smaller than the radius of the bubble through hole, the lower surface of the overflow prevention detecting probe is circular, and the bubble through hole is circular, and the overflow prevention detection The difference between the radius of the probe and the radius of the bubble via is no more than 5 mm.

According to an embodiment of the present invention, the overflow prevention detecting probe is fitted in the bubble via, and an outer peripheral surface of the overflow detecting probe is spaced apart from an inner peripheral surface of the bubble via to constitute the gap.

According to an embodiment of the invention, the area of the lower surface of the overflow prevention detecting probe is not less than 3 square millimeters.

According to an embodiment of the present invention, the lower surface of the overflow prevention detecting probe is circular and has a diameter of not less than 2 square millimeters.

According to an embodiment of the invention, the sum of the area of the lower surface of the overflow prevention detecting probe and the area of the first detecting surface is 50-1250 square millimeters.

According to an embodiment of the present invention, a distance between an inner circumferential surface of the bubble via and an outer circumferential surface of the overflow prevention probe is not less than 2 mm and not more than 20 mm.

According to an embodiment of the invention, the lower surface of the overflow prevention detecting probe is lower than the lower surface of the overflow prevention detecting plate.

According to an embodiment of the present invention, the detecting chip is a voltage detecting chip, and the overflow detecting probe includes an electric conductor, and a lower surface and/or a side surface of the electric conductor constitute the second detecting surface, and the conductive The resistance value of the body changes according to a change of the first detecting surface and the second detecting surface contacting the medium, and the electric conductor is in communication with the voltage detecting chip to make the voltage detecting chip according to the voltage of the electric conductor The amount of change in value detects the amount of change in the resistance value of the electrical conductor to generate a detection signal.

According to an embodiment of the present invention, the electrical conductor includes: a bottom wall; a circumferential wall extending along a circumferential direction of the bottom wall, an outer surface of at least one of the bottom wall and the peripheral wall constituting the second detection surface.

According to an embodiment of the present invention, the overflow prevention detecting probe includes: an electric conductor connected to the detecting chip; and an insulator covering at least a side surface and/or a lower surface of the electric conductor The side surface and/or the lower surface of the insulator constitute the second detecting surface, and the capacitance value of the electric conductor follows the first detecting surface and the first The detecting surface is changed by the change of the contact surface medium, and the detecting chip is a capacitance detecting chip and the capacitance detecting chip generates a detection signal by detecting a change amount of the capacitance value of the electric conductor.

According to an embodiment of the present invention, the overflow prevention detecting probe is opposed to the bubble via in an up-and-down direction, and a diameter of a circle having the same area as a lower surface of the conductor is larger than a lower surface of the conductor One third of the distance between the upper surfaces of the overflow prevention plate.

According to an embodiment of the present invention, the overflow prevention detecting probe is fitted in the bubble via, and an area of a lower surface of the electric conductor is not less than 3 mm 2 .

According to an embodiment of the invention, the lower surface of the electrical conductor is circular and has a diameter of not less than 2 square millimeters.

According to an embodiment of the present invention, the overflow prevention detecting probe is fitted in the bubble through hole, and a distance between an inner circumferential surface of the bubble through hole and an outer circumferential surface of the electric conductor is not less than 2 mm and Not higher than 20 mm.

According to an embodiment of the present invention, the overflow prevention detecting probe is fitted in the bubble through hole, and a lower surface of the electric conductor is lower than a lower surface of the overflow prevention detecting plate.

According to an embodiment of the present invention, the overflow prevention detecting probe and the overflow prevention detecting plate are disposed on a lid of the cooking appliance, and when the lid closes the body of the cooking appliance, the overflow prevention The detection plate is sealingly connected to the body.

According to an embodiment of the invention, the overflow prevention detecting plate is detachably provided on a lid of the cooking appliance.

According to an embodiment of the present invention, the plurality of bubble vias are plural and the gap detection detecting probe and one of the plurality of bubble vias have a gap suitable for bubble filling.

An embodiment according to the second aspect of the present invention provides a cooking appliance comprising an anti-overflow detecting device for a cooking appliance according to an embodiment of the first aspect of the present invention.

The cooking appliance according to the embodiment of the present invention has advantages such as high reliability by utilizing the overflow prevention detecting apparatus for a cooking appliance according to the embodiment of the first aspect of the present invention.

DRAWINGS

1 is a partial cross-sectional view of a cooking appliance in accordance with an embodiment of the present invention.

2 is a partial cross-sectional view of a cooking appliance in accordance with an embodiment of the present invention.

3 is a partial cross-sectional view of an anti-overflow detecting device for a cooking appliance in accordance with an embodiment of the present invention.

4 is a partial cross-sectional view of an anti-overflow detecting device for a cooking appliance in accordance with an embodiment of the present invention.

Figure 5 is a partial cross-sectional view of a cooking appliance in accordance with another embodiment of the present invention.

Figure 6 is a partial cross-sectional view of a cooking appliance in accordance with another embodiment of the present invention.

Figure 7 is a partial cross-sectional view of an anti-overflow detecting device for a cooking appliance in accordance with another embodiment of the present invention.

Figure 8 is a partial cross-sectional view of an anti-overflow detecting device for a cooking appliance in accordance with another embodiment of the present invention.

Reference numerals: cooking appliance 1, anti-overflow detecting device 10 for cooking appliance, overflow prevention detecting plate 100, bubble through hole 110, overflow prevention detecting probe 200, electric conductor 210, bottom wall 211, peripheral wall 212, insulator 220, Pot body 20.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

An anti-overflow detecting device 10 for a cooking appliance according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 8, an anti-overflow detecting device 10 for a cooking appliance according to an embodiment of the present invention includes an overflow prevention detecting plate 100, an overflow prevention detecting probe 200, and a detecting chip.

The overflow prevention detecting plate 100 is provided with a bubble through hole 110. The overflow preventing detecting plate 100 is a conductive material member and the lower surface constitutes a first detecting surface. The overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 have a gap suitable for bubble filling, and the lower surface and/or the side surface of the overflow detecting probe 200 constitute a second detecting surface, and the detection value of the overflow detecting probe 200 is The first detecting surface and the second detecting surface change in contact with the medium. The detection chip is connected to the overflow prevention detection probe 200, and the detection chip generates a detection signal by detecting a variation amount of the detection value of the overflow prevention detection probe 200.

The operation of the overflow prevention detecting device 10 for a cooking appliance according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

When the cooking appliance stops heating, the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 are in an off state. When the cooking appliance starts to heat, bubbles are gradually generated in the cooking appliance, and the air bubbles pass through the bubble through hole 110 through the overflow prevention detecting plate 100, after which the air bubbles are filled in the gap, and the overflow prevention detecting plate 100 and the overflow prevention detecting probe 200 are realized by the air bubbles. Connection, overflow prevention The detection value of the detection probe 200 varies with the change of the contact medium of the overflow prevention detection probe 200 itself and the change of the contact medium of the lower surface of the overflow prevention detection plate 100, and the detection chip detects the variation amount of the detection value of the overflow prevention detection probe 200 by A detection signal is generated and the operating state of the cooking appliance 1 is controlled to prevent air bubbles from overflowing.

The overflow prevention detecting device 10 for a cooking appliance according to an embodiment of the present invention can fill the air bubble through the bubble through hole 110 by having a gap between the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 suitable for bubble filling. In the gap, the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 are connected by a bubble, and the bubble is detected by the overflow detecting probe 200 and the overflow preventing detecting plate 100.

In this way, when the air bubble does not overflow, the overflow prevention detecting probe 200 detects only the second detection surface of the self, and the detection area is small, thereby preventing the false detection of the overflow prevention detecting probe 200 due to environmental influence, thereby improving The accuracy and reliability of the detection by the overflow prevention device 10.

When the bubble overflows, the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 are connected by a bubble, and the overflow detecting probe 200 detects the bubble together by the first detecting surface and the second detecting surface, thereby increasing the use. In detecting the entire area of the bubble, the detection value generated by the anti-overflow detecting probe 200 is amplified, so that the anti-overflow detecting device 10 detects more sensitively, and prevents the bubble from overflowing but cannot be detected.

That is to say, compared with the detection device in the related art, the anti-overflow detecting device 10 can not only ensure timely and accurate detection, but also can improve the accuracy and reliability of detection and prevent misjudgment.

Therefore, the overflow prevention detecting device 10 for a cooking appliance according to an embodiment of the present invention has the advantages of timely detection, high sensitivity, good accuracy, and the like.

An anti-overflow detecting device 10 for a cooking appliance according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

In some embodiments of the present invention, as shown in FIGS. 1 to 4, the overflow prevention detecting apparatus 10 for a cooking appliance according to an embodiment of the present invention includes an overflow prevention detecting board 100, an overflow prevention detecting probe 200, and a detecting chip. .

The overflow prevention detecting probe 200 is opposed to the bubble through hole 110 in the up and down direction, and the lower surface of the overflow prevention detecting probe 200 is spaced apart from the upper surface of the overflow prevention detecting plate 100 to constitute the gap. This allows the air bubbles to pass through the bubble through hole 110 and directly contacts the overflow prevention detecting probe 200, thereby further improving the timeliness and sensitivity of the detection of the overflow prevention detecting device 10 for the cooking appliance.

It can be understood by those skilled in the art that the overflow prevention detecting probe 200 can also fit in the bubble through hole 110, and the outer circumferential surface of the overflow prevention detecting probe 200 and the inner circumferential surface of the bubble through hole 110 are spaced apart to constitute the gap. .

In some embodiments of the present invention, the difference between the diameter of the circle having the same area as the lower surface of the overflow prevention detecting probe 200 and the diameter of the circle having the same area as the bubble through hole 110 is smaller than that of the overflow prevention detecting probe 200. The diameter of the circle having the same area of the surface and the larger one of the diameters of the same circle as the area of the bubble via 110.

Specifically, as shown in FIGS. 3 and 4, the lower surface of the overflow prevention detecting probe 200 is circular, the bubble through hole 110 is circular, and the diameter a of the lower surface of the overflow prevention detecting probe 200 and the diameter of the bubble via 110 are formed. The difference of c is smaller than the larger one of the diameter of the lower surface of the overflow prevention detecting probe 200 and the diameter of the bubble via 110. This makes it possible to facilitate the filling of the gap by the bubble in the case where the bubble can smoothly pass through the gap, thereby further improving the accuracy of the detection.

Advantageously, the diameter of the circle having the same area as the lower surface of the overflow prevention detecting probe 200 is larger than one third of the distance between the lower surface of the overflow prevention detecting probe 200 and the upper surface of the overflow prevention detecting plate 100.

More specifically, as shown in FIG. 3 and FIG. 4, the lower surface of the overflow prevention detecting probe 200 is circular, and the diameter of the lower surface of the overflow prevention detecting probe 200 is larger than the lower surface of the overflow prevention detecting probe 200 and the overflow prevention detecting board. One-third of the distance between the upper surfaces of 100. This ensures that the lower surface of the overflow prevention detecting probe 200 has a sufficient area to ensure the contact area of the bubble with the lower surface of the overflow prevention detecting probe 200, thereby further improving the detection effect of the overflow prevention detecting device 10.

Specifically, the radius of the overflow prevention detecting probe 200 is smaller than the radius of the bubble via 110, and the minimum distance between the outer surface of the overflow prevention detecting probe 200 and the upper surface of the overflow prevention detecting plate 100 is not more than 5 mm.

The radius of the overflow prevention detecting probe 200 is smaller than the radius of the bubble through hole 110, the lower surface of the overflow prevention detecting probe 200 is circular, the bubble through hole 110 is circular, the radius of the overflow prevention detecting probe 200 and the radius of the bubble through hole 110 are The difference is no more than 5 mm. This allows the overflow prevention detecting probe 200 and the bubble via 110 to have an appropriate size.

It will be understood by those skilled in the art that the lower surface of the anti-overflow detecting probe 200 and the bubble via 110 may not be circular.

1 and 3 illustrate an anti-overflow detection device 10 for a cooking appliance in accordance with an embodiment of the present invention. As shown in FIG. 1 and FIG. 3, the detecting chip is a voltage detecting chip, and the overflow detecting probe 200 includes a conductor 210. The lower surface and/or the side surface of the conductor 210 constitute the second detecting surface, and the electrical conductor 210 The resistance value changes according to the change of the first detecting surface and the second detecting surface contacting medium, and the electric conductor 210 communicates with the voltage detecting chip to change the voltage detecting chip according to the voltage value of the electric conductor. The amount of change in the resistance value of the electrical conductor is detected to generate a detection signal. In this way, by detecting the voltage of the overflow prevention detecting probe 200, the resistance change of the overflow prevention detecting probe 200 is reflected to reflect the contact of the overflow prevention detecting probe 200 with a medium such as a bubble, thereby detecting the bubble overflow.

Specifically, as shown in FIGS. 1 and 3, the electrical conductor 210 includes a bottom wall 211 and a peripheral wall 212. The peripheral wall 212 extends in the circumferential direction of the bottom wall 211, and the outer surface of at least one of the bottom wall 211 and the peripheral wall 212 constitutes the second detecting surface. This can facilitate the formation of the overflow prevention detecting probe 200.

2 and 4 illustrate an anti-overflow detecting device 10 for a cooking appliance in accordance with another embodiment of the present invention. As shown in FIGS. 2 and 4, the overflow prevention detecting probe 200 includes an electrical conductor 210 and an insulator 220. The electrical conductor 210 is connected to the detecting chip. The insulator 220 covers at least a side surface and/or a lower surface of the conductor 210, and a side view of the insulator 220 The surface and/or the lower surface constitute the second detecting surface, and the capacitance value of the electric conductor 210 changes according to the change of the first detecting surface and the second detecting surface contacting the medium, and the detecting chip is a capacitance detecting chip and The capacitance detecting chip generates a detection signal by detecting a change in the capacitance value of the conductor 210. In this way, by detecting the capacitance of the overflow prevention detecting probe 200, the overflow detecting probe 200 is in contact with a medium such as a bubble, thereby detecting the bubble overflow.

In some embodiments of the present invention, the difference between the diameter of the circle having the same area as the lower surface of the conductor 210 and the diameter of the circle having the same area as the bubble via 110 is smaller than the area of the lower surface of the conductor 210. The larger of the diameter of the same circle and the diameter of the same circle as the area of the bubble via 110.

Specifically, as shown in FIGS. 3 and 4, the lower surface of the conductor 210 is circular, the bubble via 110 is circular, and the difference between the diameter a of the lower surface of the conductor 210 and the diameter c of the bubble via 110 It is smaller than the larger one of the diameter of the lower surface of the electric conductor 210 and the diameter of the bubble via 110. This makes it possible to facilitate the filling of the gap by the bubble in the case where the bubble can smoothly pass through the gap, thereby further improving the accuracy of the detection.

Advantageously, the diameter of the circle having the same area as the lower surface of the electrical conductor 210 is greater than one third of the distance between the lower surface of the electrical conductor 210 and the upper surface of the overflow prevention plate 100.

More specifically, as shown in FIGS. 3 and 4, the lower surface of the conductor 210 is circular, and the diameter of the lower surface of the conductor 210 is larger than the lower surface of the conductor 210 and the upper surface of the overflow detecting plate 100. One-third of the distance. This ensures that the lower surface of the conductor 210 has a sufficient area to ensure the contact area of the bubble with the lower surface of the overflow prevention detecting probe 200, thereby further improving the detection effect of the overflow prevention detecting device 10.

It will be understood by those skilled in the art that the lower surface of the conductor 210 and the bubble via 110 may not be circular.

Alternatively, the insulator 220 may include a bottom wall and a peripheral wall circumferentially disposed along the bottom wall, at least one of the bottom wall and the peripheral wall constituting the second detecting surface.

Figures 1-4 illustrate an anti-overflow detection device 10 for a cooking appliance in accordance with some specific examples of the present invention. As shown in FIG. 1 to FIG. 4, the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 are provided on the lid of the cooking appliance 1, and when the lid closes the body 20 of the cooking appliance 1, the overflow prevention detecting plate 100 is The body 20 is sealed. The outer peripheral edge of the overflow prevention detecting plate 100 may be provided with a sealing ring for sealing the gap between the overflow preventing detecting plate 100 and the pan body 20. This ensures that the air bubbles pass through the bubble through holes 110, thereby further improving the reliability of the overflow prevention detecting device 10.

Advantageously, the overflow prevention detection plate 100 is detachably provided on the lid of the cooking appliance 1. This facilitates the cleaning of the overflow prevention detecting plate 100 and the lid.

Alternatively, the bubble vias 110 are plural and the overflow prevention detecting probe 200 is opposed to one of the plurality of bubble vias 110 in the up and down direction. This allows air bubbles to pass through the plurality of bubble through holes 110 through the overflow prevention detecting plate 100.

An anti-overflow detecting device 10 for a cooking appliance according to another embodiment of the present invention will now be described with reference to the accompanying drawings.

As shown in FIGS. 5 to 8, the overflow prevention detecting device 10 for a cooking appliance according to an embodiment of the present invention includes an overflow prevention detecting plate 100, an overflow prevention detecting probe 200, and a detecting chip.

The overflow prevention detecting plate 100 is provided with a bubble through hole 110. The overflow preventing detecting plate 100 is a conductive material member and the lower surface constitutes a first detecting surface. The overflow prevention detecting probe 200 is fitted in the bubble through hole 110 and has a gap suitable for bubble filling between the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100. Specifically, the outer circumferential surface of the overflow prevention detecting probe 200 and the bubble through hole 110 The inner peripheral faces are spaced apart to constitute the gap. The lower surface and/or the side surface of the overflow prevention detecting probe 200 constitutes a second detecting surface, and the detected value of the overflow detecting probe 200 changes as the first detecting surface and the second detecting surface contact the medium. The detection chip is connected to the overflow prevention detection probe 200, and the detection chip generates a detection signal by detecting a variation amount of the detection value of the overflow prevention detection probe 200.

When the cooking appliance stops heating, the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 are in an off state. When the cooking appliance starts heating, air bubbles are gradually generated in the cooking appliance, and the air bubbles pass through the overflow prevention detecting plate 100 through the gap between the inner circumferential surface of the bubble through hole 110 and the outer circumferential surface of the overflow prevention detecting probe 200, and are filled in the space. In the gap, the overflow prevention detecting plate 100 and the overflow prevention detecting probe 200 are connected by air bubbles, and the detection value of the overflow prevention detecting probe 200 is in contact with the medium of the overflow detecting probe 200 itself and the lower surface of the overflow preventing detecting plate 100 contacts the medium. The change of the detection chip detects the amount of change in the detected value of the overflow prevention detecting probe 200 to generate a detection signal, and controls the operating state of the cooking appliance 1 to prevent bubble overflow.

In this way, when the air bubble does not overflow, the overflow prevention detecting probe 200 detects only by the first detecting surface of the self, and the detection area is small, thereby preventing the false detection of the overflow prevention detecting probe 200 due to environmental influence, thereby improving The accuracy and reliability of the detection by the overflow prevention device 10.

Moreover, by fitting the overflow prevention detecting probe 200 into the bubble through hole 110, the bubble connection overflow detecting probe 200 and the overflow preventing detecting plate 100 can be further facilitated, thereby further improving the detection accuracy of the overflow preventing detecting device 10.

In some embodiments of the present invention, as shown in FIGS. 5-8, the area of the lower surface of the overflow prevention detecting probe 200 is not less than 3 square millimeters. Specifically, the lower surface of the overflow prevention detecting probe 200 is circular and has a diameter of not less than 2 mm, or the lower surface of the overflow prevention detecting probe 200 is non-circular and has an area of not less than 4 mm 2 . This can ensure that the lower surface of the overflow prevention detecting probe 200 has a sufficient area to ensure the area of the first detecting surface, improve the contact area of the bubble and the overflow detecting probe 200, and further improve the accuracy of the detection by the overflow preventing detecting device 10. .

Alternatively, the sum of the area of the lower surface of the overflow prevention detecting probe 200 and the area of the first detecting surface is 50-1250 square millimeters. This can reduce the cost at a time when the detection area is sufficient.

Specifically, as shown in FIGS. 7 and 8, the distance d between the inner peripheral surface of the bubble via 110 and the outer peripheral surface of the overflow prevention detecting probe 200 is not less than 2 mm and not more than 20 mm. This makes it possible to facilitate the bubble connection of the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 while ensuring that the bubble smoothly passes through the gap, thereby improving the reliability of the detection by the overflow prevention detecting device 10.

More specifically, as shown in FIGS. 7 and 8, the lower surface of the overflow prevention detecting probe 200 is lower than the lower surface of the overflow prevention detecting plate 100. In other words, the distance b between the lower surface of the overflow prevention detecting probe 200 and the lower surface of the overflow prevention detecting plate 100 is greater than zero. This allows the bubble to first come into contact with the overflow prevention detecting probe 200 and then contact the overflow prevention detecting plate 100, thereby further facilitating the detection of the bubble.

Figures 5 and 7 illustrate an anti-overflow detection device 10 for a cooking appliance in accordance with an embodiment of the present invention. As shown in FIG. 5 and FIG. 7 , the detecting chip is a voltage detecting chip, and the overflow detecting probe 200 includes a conductor 210. The lower surface and/or the side surface of the conductor 210 constitute the second detecting surface, and the electrical conductor 210 The resistance value changes according to the change of the first detecting surface and the second detecting surface contacting medium, and the electric conductor 210 communicates with the voltage detecting chip to change the voltage detecting chip according to the voltage value of the electric conductor. The amount of change in the resistance value of the electrical conductor is detected to generate a detection signal. In this way, by detecting the voltage of the overflow prevention detecting probe 200, the resistance change of the overflow prevention detecting probe 200 is reflected to reflect the contact of the overflow prevention detecting probe 200 with a medium such as a bubble, thereby detecting the bubble overflow.

Specifically, as shown in FIGS. 5 and 7, the electrical conductor 210 includes a bottom wall 211 and a peripheral wall 212. The peripheral wall 212 extends in the circumferential direction of the bottom wall 211, and the outer surface of at least one of the bottom wall 211 and the peripheral wall 212 constitutes the second detecting surface. This way The formation of the overflow prevention detecting probe 200 can be facilitated.

6 and 8 illustrate an anti-overflow detecting device 10 for a cooking appliance in accordance with another embodiment of the present invention. As shown in FIGS. 6 and 8, the overflow prevention detecting probe 200 includes an electrical conductor 210 and an insulator 220. The electrical conductor 210 is connected to the detecting chip. The insulator 220 covers at least a side surface and/or a lower surface of the conductor 210, and a side surface and/or a lower surface of the insulator 220 constitute the second detecting surface, and a capacitance value of the conductor 210 follows the first detecting surface and the The second detecting surface changes in contact with the medium, and the detecting chip is a capacitance detecting chip and the capacitance detecting chip detects a change amount of the capacitance value of the electric conductor 210 to generate a detection signal. In this way, by detecting the capacitance of the overflow prevention detecting probe 200, the overflow detecting probe 200 is in contact with a medium such as a bubble, thereby detecting the bubble overflow.

Specifically, the area of the lower surface of the electrical conductor 210 is not less than 3 square millimeters. Specifically, the lower surface of the electric conductor 210 is circular and the diameter a is not less than 2 mm 2 ; or the lower surface of the overflow prevention detecting probe 200 is non-circular and the area is not less than 4 mm 2 . This ensures that the lower surface of the conductor 210 has a sufficient area to ensure the detection effect of the overflow prevention detecting probe 200.

More specifically, the distance d between the inner circumferential surface of the bubble via 110 and the outer circumferential surface of the electric conductor 210 is not less than 2 mm and not more than 20 mm. This can facilitate the bubble connection overflow detection probe 200 and the overflow detection board 100 in the case of ensuring that the bubble smoothly passes through the gap.

Alternatively, the lower surface of the electrical conductor 210 is lower than the lower surface of the overflow prevention detecting plate 100. In other words, the distance b between the lower surface of the electrical conductor 210 and the lower surface of the overflow prevention detecting plate 100 is greater than zero. This can facilitate the bubble to first contact the anti-overflow detection probe 200 and then contact the anti-overflow detection plate 100.

Advantageously, the insulator 220 may include a bottom wall and a peripheral wall circumferentially disposed along the bottom wall, at least one of the bottom wall and the peripheral wall constituting the second detecting surface.

Figures 5-8 illustrate an anti-overflow detection device 10 for a cooking appliance in accordance with some specific examples of the present invention. As shown in FIGS. 5-8, the overflow prevention detecting probe 200 and the overflow prevention detecting plate 100 are provided on the lid of the cooking appliance 1, and when the lid closes the body 20 of the cooking appliance 1, the overflow prevention detecting plate 100 is The body 20 is sealed. The outer peripheral edge of the overflow prevention detecting plate 100 may be provided with a sealing ring for sealing the gap between the overflow preventing detecting plate 100 and the pan body 20. This ensures that the air bubbles pass through the bubble through holes 110, thereby further improving the reliability of the overflow prevention detecting device 10.

A cooking appliance 1 according to an embodiment of the present invention is described below. Cooking appliance 1 according to an embodiment of the invention includes The overflow prevention detecting device 10 for a cooking appliance of the above embodiment is invented.

The cooking appliance 1 according to the embodiment of the present invention has advantages such as high reliability by utilizing the overflow prevention detecting device 10 for a cooking appliance according to the above-described embodiment of the present invention.

Other configurations and operations of the cooking appliance 1 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

An anti-overflow detecting device for a cooking appliance, comprising:

An overflow prevention detecting plate, wherein the overflow prevention detecting plate is provided with a bubble through hole, the overflow preventing detecting plate is a conductive material member and the lower surface constitutes a first detecting surface;

An overflow prevention detecting probe having a gap suitable for bubble filling between the overflow prevention detecting probe and the overflow prevention detecting plate, wherein a lower surface and/or a side surface of the overflow preventing detecting probe constitute a second detecting surface, The detection value of the overflow prevention detecting probe changes according to the change of the first detecting surface and the second detecting surface contacting the medium;

The detection chip is connected to the anti-overflow detection probe, and the detection chip generates a detection signal by detecting a change amount of the detection value of the anti-overflow detection probe.
The overflow prevention detecting device for a cooking appliance according to claim 1, wherein the overflow prevention detecting probe and the bubble through hole are opposed to each other in an up and down direction, and a lower surface of the overflow prevention detecting probe The upper surface of the overflow prevention detecting plate is spaced apart to constitute the gap.
The overflow prevention detecting device for a cooking appliance according to claim 2, wherein a diameter of a circle having the same area as a lower surface of the overflow prevention detecting probe is larger than a lower surface of the overflow prevention detecting probe One third of the distance between the upper surfaces of the overflow prevention plate.
The anti-overflow detecting device for a cooking appliance according to claim 2, wherein a radius of the overflow detecting probe is smaller than a radius of the bubble via, an outer surface of the overflow detecting probe and the outer surface The minimum distance between the upper surfaces of the overflow proof plates is no more than 5 mm.
The anti-overflow detecting device for a cooking appliance according to claim 2, wherein a radius of the overflow detecting probe is smaller than a radius of the bubble through hole, and a lower surface of the overflow detecting probe is circular. The bubble via is circular, and the difference between the radius of the overflow detecting probe and the radius of the bubble via is not more than 5 mm.
The anti-overflow detecting device for a cooking appliance according to claim 1, wherein the overflow prevention detecting probe is fitted in the bubble through hole, and an outer peripheral surface of the overflow prevention detecting probe and the bubble pass The inner peripheral faces of the holes are spaced apart to constitute the gap.
The overflow prevention detecting apparatus for a cooking appliance according to claim 6, wherein an area of a lower surface of the overflow prevention detecting probe is not less than 3 mm 2 .
The anti-overflow detecting device for a cooking appliance according to claim 7, wherein the lower surface of the overflow prevention detecting probe is circular and has a diameter of not less than 2 mm 2 .
An anti-overflow detecting device for a cooking appliance according to claim 6, wherein said overflow prevention detection The sum of the area of the lower surface of the probe and the area of the first detecting surface is 50-1250 square millimeters.
The overflow prevention detecting device for a cooking appliance according to claim 6, wherein a distance between an inner circumferential surface of the bubble through hole and an outer circumferential surface of the overflow prevention detecting probe is not less than 2 mm Not higher than 20 mm.
The overflow prevention detecting device for a cooking appliance according to claim 6, wherein a lower surface of the overflow prevention detecting probe is lower than a lower surface of the overflow prevention detecting plate.
The anti-overflow detecting device for a cooking appliance according to claim 1, wherein the detecting chip is a voltage detecting chip, and the overflow detecting probe comprises an electric conductor, a lower surface of the electric conductor and/or The side surface constitutes the second detecting surface, and the resistance value of the electric conductor changes according to a change of the first detecting surface and the second detecting surface contacting the medium, and the electric conductor is connected to the voltage detecting chip to The voltage detecting chip detects the amount of change in the resistance value of the conductor based on the amount of change in the voltage value of the conductor to generate a detection signal.
The anti-overflow detecting device for a cooking appliance according to claim 12, wherein the electrical conductor comprises:

Bottom wall

A peripheral wall extending circumferentially of the bottom wall, an outer surface of at least one of the bottom wall and the peripheral wall constituting the second detecting surface.
The anti-overflow detecting device for a cooking appliance according to claim 1, wherein the overflow prevention detecting probe comprises:

An electrical conductor, the electrical conductor being connected to the detecting chip;

An insulator covering at least a side surface and/or a lower surface of the electrical conductor, a side surface and/or a lower surface of the insulator forming the second detecting surface, and a capacitance value of the electric conductor is as described The first detecting surface and the second detecting surface are changed in contact with a change in a medium, and the detecting chip is a capacitance detecting chip and the capacitance detecting chip generates a detection signal by detecting a change amount of a capacitance value of the electric conductor.
The overflow prevention detecting device for a cooking appliance according to claim 14, wherein the overflow prevention detecting probe is opposed to the bubble via hole in an up-and-down direction and has the same area as a lower surface of the electric conductor The diameter of the circle is greater than one third of the distance between the lower surface of the electrical conductor and the upper surface of the overflow prevention plate.
The anti-overflow detecting device for a cooking appliance according to claim 14, wherein the overflow prevention detecting probe is fitted in the bubble through hole, and an area of a lower surface of the electric conductor is not less than 3 mm 2 .
The anti-overflow detecting device for a cooking appliance according to claim 16, wherein the lower surface of the electric conductor is circular and has a diameter of not less than 2 mm 2 .
The overflow prevention detecting device for a cooking appliance according to claim 14, wherein the overflow prevention detecting probe is fitted in the bubble through hole, an inner circumferential surface of the bubble via hole and the electric conductor Distance between outer peripheral surfaces Not less than 2 mm and not more than 20 mm.
The anti-overflow detecting device for a cooking appliance according to claim 14, wherein the overflow prevention detecting probe is fitted in the bubble through hole, and a lower surface of the electric conductor is lower than the overflow prevention detecting The lower surface of the board.
The overflow prevention detecting device for a cooking appliance according to any one of claims 1 to 19, wherein the overflow prevention detecting probe and the overflow prevention detecting plate are provided on a lid of the cooking appliance When the lid closes the body of the cooking appliance, the overflow prevention detecting plate is sealingly connected to the body.
The anti-overflow detecting device for a cooking appliance according to claim 20, wherein the overflow prevention detecting plate is detachably provided on a lid of the cooking appliance.
The overflow prevention detecting device for a cooking appliance according to any one of claims 1 to 19, wherein the plurality of bubble vias are a plurality of the overflow detecting probes and the plurality of bubble vias There is a gap between one of them suitable for bubble filling.
A cooking appliance comprising the spill prevention detecting device for a cooking appliance according to any one of claims 1-22.